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Publication numberUSRE39133 E1
Publication typeGrant
Application numberUS 10/423,332
Publication dateJun 13, 2006
Filing dateApr 24, 2003
Priority dateSep 24, 1997
Also published asUS6226548, US20050277832, US20060009780, USRE42194, USRE42226, USRE44305, WO1999015097A2, WO1999015097A3
Publication number10423332, 423332, US RE39133 E1, US RE39133E1, US-E1-RE39133, USRE39133 E1, USRE39133E1
InventorsJohn B. Clayton, Anthony Melkent, Kevin T. Foley, Michael C. Sherman
Original AssigneeSurgical Navigation Technologies, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Percutaneous registration apparatus and method for use in computer-assisted surgical navigation
US RE39133 E1
Abstract
An apparatus and procedures for percutaneous placement of surgical implants and instruments such as, for example, screws, rods, wires and plates into various body parts using image guided surgery. The invention includes an apparatus for use with a surgical navigation system, an attaching device rigidly connected to a body part, such as the spinous process of a vertebrae, with an identification superstructure rigidly but removably connected to the attaching device. This identification superstructure, for example, is a reference arc and fiducial array which accomplishes the function of identifying the location of the superstructure, and, therefore, the body part to which it is fixed, during imaging by CAT scan or MRI, and later during medical procedures.
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Claims(63)
1. An apparatus for facilitating percutaneous placement of surgical instruments into the spine, adapted for use with a surgical navigation system employing an energy-detecting array in communication with a surgical navigation computer to track positions of instruments in three dimensional space relative to a known reference point, said apparatus comprising:
a connector adapted to be rigidly attached to a portion of the spine;
at least one central post connected to said connector;
a position identification structure rigidly and removably connected to said central post at a predetermined position on said central post and adapted to be reconnected at the same said predetermined position, said identification structure being further adapted to allow a patient to be scanned with the structure connected to the central post, said structure including an assembly for communicating positioning information with respect to said assembly to the energy detecting array and surgical navigation computer; and
a connector assembly for said reconnecting of said structure substantially to said predetermined position on said central post.
2. The apparatus of claim 1, wherein the connector is a clamp having teeth adapted for biting into a spinous process.
3. The apparatus of claim 1, wherein the connector includes an elongated fixture with a central axis and a threaded end adapted to be inserted into the spinous process and a substantially rigid wire connected to the fixture with the central axis of the wire adapted to be implanted into the spinous process at an angle to elongated fixture to prevent the fixture from rotating.
4. The apparatus of claim 1, wherein said assembly for communication positioning information is a substantially H-shaped frame.
5. The apparatus of claim 1, wherein said assembly for communicating positioning information is a substantially W-shaped frame.
6. The apparatus of claim 1, wherein said assembly for communicating positioning information is a substantially U-shaped frame.
7. The apparatus of claim 1, wherein said assembly for communicating positioning information is a substantially X-shaped frame.
8. The apparatus of claim 1, wherein said assembly for communicating positioning information comprises:
a fiducial array for registering the location of a spinal element with rigidly connected fiducials; and
a reference arc for signaling the position of a spinal element, said arc further comprising rigidly connected emitters.
9. The apparatus of claim 1, wherein said references point is on the spine.
10. A method for monitoring the location of an instrument, surgical implant and various portions of the body, to be operated on, using a surgical navigation system with a surgical navigation computer and a digitizer array for monitoring the location of instruments in three-dimensional space relative to a known reference point, said method comprising the steps of:
attaching a fixture having a central post to a portion of the spine;
removably attaching an identification structure including a fiducial array and a reference arc to said central post;
providing a scanned three-dimensional image of a patient including said fiducial array rigidly attached to said central post of said fixture, said fixture being rigidly attached to the patient to identify the position of said fixture and said fiducial array on the scanned image;
using an image-guided system, by touching an image guided surgical pointer to one or more fiducials on the fiducial array to register the location of a spinal element fixed to said array; and
emitting a signal from said reference arc to indicate changes in position of the spinal element during a surgical procedure.
11. The method of claim 10, further comprising:
performing a surgical procedure percutaneously on a patient using an instrument and implant locatable relative to the spinal element and said structure in known positions identified in the surgical navigation system.
12. The method of claim 10, further comprising:
inserting a threaded fixture having a substantially rigid wire into a spinal element; and
touching an image guided pointer to said threaded fixture and wire to positively register the location of said fixture and wire in a surgical navigation computer.
13. The method of claim 10, further comprising:
implanting imageable devices into spinal elements to identify the location of the spinal elements in the surgical navigation computer.
14. The method of claim 10, further comprising:
implanting imageable devices into a plurality of spinal elements; and
manipulating the patient's spine by viewing the location of the implanted devices, as communicated to the surgical navigation computer by touching an instrument with a tracking emitter to said implanted imageable devices to align the actual position of the spinal elements with the previously scanned image.
15. The method of claim 10 further comprising:
percutaneously implanting screws into spinal elements; and
locating the position of said screws using image guided surgical navigation techniques.
16. The method of claim 15 further comprising:
manipulating the orientation of the screw heads percutaneously using a head-positioning probe for communicating location containing an emitter, said probe communicating to the surgical navigation computer the orientation of the screw heads; and
using a head positioning tool for manipulating implants having an end portion that mates with the heads of the screws and rotating the screws to receive a connecting implant.
17. The method of claim 16 further comprising:
tracking the location and position of the connecting implant by means of an instrument affixed to the implant having emitters capable of communicating orientation and location to the surgical navigation computer.
18. A system for use in performing the percutaneous placement of surgical implants and instruments into the spine using image guided surgery and a surgical navigation computer and energy detecting array, said system comprising:
means for attaching a fixture to a portion of the spine;
means for communicating position information to the surgical navigation computer and energy detecting array said means rigidly and removably connected to said means for attaching a fixture;
means for providing location information of said spinal portion to the surgical navigation system adapted to be connected to spinal elements;
means for indicating screw-head position said means electrically connected to the surgical navigation system and adapted to mate with the head of a screw implanted in one or more of said spinal elements.
19. The system of claim 18 further comprising:
an elongated implant adapted to be inserted into said implanted screws;
means for indicating the position of said elongated implant electrically connected to the surgical navigation system and adapted to mate with the elongated implant.
20. The system of claim 18, wherein said implanted screws have heads and the elongated implant is a rod adapted to be guided through holes in said implanted screw heads.
21. The apparatus of claim 1, wherein the connector includes an elongated fixture with a central axis and an end adapted to be inserted into the spinous process and a substantially rigid wire connected to the fixture with the central axis of the wire adapted to be implanted into the spinous process at an angle to said elongated fixture to prevent said fixture from rotating.
22. An apparatus for facilitating percutaneous placement of surgical instruments into the spine, adapted for use with a surgical navigation system employing an energy-detecting array in communication with a surgical navigation computer to track positions of instruments in three dimensional space relative to a known reference point, said apparatus comprising:
a connector adapted to be rigidly attached to a portion of the spine;
at least one post connected to said connector;
a position identification structure rigidly connected to said post at a predetermined position on said post, said identification structure being further adapted to allow a patient to be scanned with the structure connected to the post, said structure including an assembly for communicating positioning information with respect to said assembly to the energy detecting array and surgical navigation computer; and
a means for indicating a screw-head position said means electrically connected to the surgical navigation system and adapted to mate with the head of a screw implanted in the spine.
23. The apparatus of claim 22 wherein said position identification structure is rigidly and removably connected to said post and adapted to be reconnected at said same predetermined position.
24. The apparatus of claim 23 wherein said apparatus further includes a connector assembly for said reconnecting of said structure substantially to said predetermined position on said post.
25. The apparatus of claim 22, wherein the connector is a clamp having teeth adapted for biting into a spinous process.
26. An apparatus for facilitating percutaneous placement of surgical instruments into the spine, adapted for use with a surgical navigation system employing an energy-detecting array in communication with a surgical navigation computer to track positions of instruments in three dimensional space relative to a known reference point, said apparatus comprising:
a connector adapted to be rigidly attached to a portion of the spine;
at least one post connected to said connector;
a position identification structure rigidly connected to said post at a predetermined position on said post, said identification structure being further adapted to allow a patient to be scanned with the structure connected to the post, said structure including an assembly for communicating positioning information with respect to said assembly to the energy detecting array and surgical navigation computer; and
wherein the connector includes an elongated fixture with a central axis and a threaded end adapted to be inserted into the spinous process and a substantially rigid wire connected to the fixture, said wire adapted to be implanted into the spinous process at an angle to prevent the fixture from rotating.
27. The apparatus of claim 22, wherein said assembly for communicating positioning information is a substantially H-shaped frame.
28. The apparatus of claim 22, wherein said assembly for communicating positioning information is a substantially W-shaped frame.
29. The apparatus of claim 22, wherein said assembly for communicating positioning information is a substantially U-shaped frame.
30. The apparatus of claim 22, wherein said assembly for communicating positioning information is a substantially X-shaped frame.
31. The apparatus of claim 1, wherein said assembly for communicating positioning information comprises:
a reference arc for signaling the position of a spinal element, said arc further comprising rigidly connected emitters.
32. The apparatus of claim 31 wherein said assembly further includes a fiducial array for registering the location of a spinal element with rigidly connected fiducials.
33. The apparatus of claim 32, wherein said reference point is on the spine.
34. A method for monitoring the location of an instrument, surgical implant and various portions of the body, to be operated on, using a surgical navigation system with a surgical navigation computer and a digitizer array for monitoring the location of instruments in three-dimensional space relative to a known reference point, said method comprising:
attaching a fixture having a post to a portion of the body;
attaching a reference arc to said post;
providing a scanned three-dimensional image of a patient with the reference arc in place;
using an image-guided system to track instruments and implants relative to the reference arc and three-dimensional scan;
emitting a signal from said reference arc to indicate changes in position of the spinal element during a surgical procedure,
inserting a threaded fixture having a substantially rigid wire into a spinal element; and
touching an image guided pointer to said threaded fixture and wire to positively register the location of said fixture and wire in a surgical navigation computer.
35. A method for monitoring the location of an instrument, surgical implant and various portions of the body, to be operated on, using a surgical navigation system with a surgical navigation computer and a digitizer array for monitoring the location of instruments in three-dimensional space relative to a known reference point, said method comprising:
attaching a fixture having a post to a portion of the body;
attaching a reference arc to said post;
providing a scanned three-dimensional image of a patient with the reference arc in place;
using an image-guided system to track instruments and implants relative to the reference arc and three-dimensional scan; and
emitting a signal from said reference arc to indicate changes in position of the spinal element during a surgical procedure;
implanting imageable devices into a plurality of spinal elements; and
manipulating the patient's spine by viewing the location of the implanted devices, as communicated to the surgical navigation computer by touching an instrument with a tracking emitter to said implanted imageable devices to align the actual position of the spinal elements with the previously scanned image.
36. The method of claim 35, further comprising:
performing a surgical procedure percutaneously on a patient using an instrument and implant locatable relative to the spinal element and said structure in known positions identified in the surgical navigation system.
37. The method of claim 35, further comprising:
implanting imageable devices into spinal elements to identify the location of the spinal elements in the surgical navigation computer.
38. The method of claim 35 further comprising:
percutaneously implanting screws into spinal elements; and
locating the position of said screws using image guided surgical navigation techniques.
39. A method for monitoring the location of an instrument, surgical implant and various portions of the body, to be operated on, using a surgical navigation system with a surgical navigation computer and a digitizer array for monitoring the location of instruments in three-dimensional space relative to a known reference point, said method comprising:
attaching a fixture having a post to a portion of the body;
attaching a reference arc to said post;
providing a scanned three-dimensional image of a patient with the reference arc in place;
using an image-guided system to track instruments and implants relative to the reference arc and three-dimensional scan;
emitting a signal from said reference arc to indicate changes in position of the spinal element during a surgical procedure;
percutaneously implanting screws into spinal elements;
locating the position of said screws using image guided surgical navigation techniques;
manipulating the orientation of the screw heads percutaneously using a head-positioning probe for communicating location containing an emitter, said probe communicating to the surgical navigation computer the orientation of the screw heads; and
using a head positioning tool for manipulating implants having an end portion that mates with the heads of the screws and rotating the screws to receive a connecting implant.
40. The method of claim 39 further comprising:
tracking the location and position of the connecting implant by means of an instrument affixed to the implant having emitters capable of communicating orientation and location to the surgical navigation computer.
41. A system for use in performing the percutaneous placement of surgical implants and instruments into the spine using image guided surgery and a surgical navigation computer and energy detecting array, said system comprising:
means for attaching a fixture to a portion of the spine;
means for communicating position information to the surgical navigation computer and energy detecting array said means rigidly connected to said means for attaching a fixture;
means for providing location information of said spinal portion to the surgical navigation system adapted to be connected to spinal elements; and
a means for indicating screw-head position said means electrically connected to the surgical navigation system and adapted to mate with the head of a screw implanted in one or more of said spinal elements.
42. The system of claim 41 further comprising:
an elongated implant adapted to be inserted into said screw;
means for indicating the position of said elongated implant electrically connected to the surgical navigation system and adapted to mate with the elongated implant.
43. The system of claim 41 wherein energy detecting array is removably connected to said means for attaching a fixture.
44. A system for use in performing the percutaneous placement of surgical implants and instruments into the spine using image guided surgery and a surgical navigation computer and energy detecting array, said system comprising:
means for attaching a fixture to a portion of the spine;
means for communicating position information to the surgical navigation computer and energy detecting array said means rigidly connected to said means for attaching a fixture;
means for providing location information of said spinal portion to the surgical navigation system adapted to be connected to spinal elements; and
wherein a screw has a head and the elongated implant is a rod adapted to be guided through holes in said implanted screw head.
45. An apparatus for use with a surgical navigation system to track a position of at least one object in three-dimensional space relative to a patient's body, said apparatus comprising:
an anchor operable to be attached to a portion of the body;
a position identification structure rigidly and removably connected to said anchor at a pre-determined position and adapted to be reconnected at said same pre-determined position, said position identification structure being further adapted to allow the patient to be scanned with said position identification structure connected to said anchor, said position identification structure including an assembly for providing position information to the surgical navigation system;
a connector assembly associated with said position identification structure operable to reconnect said position identification structure substantially to said pre-determined position; and
a means for indicating a member position said means electrically connected to the surgical navigation system and adapted to mate with said member implanted in the body.
46. The apparatus as defined in claim 45 wherein the anchor is a clamp having teeth adapted for biting into a patient's body.
47. The apparatus as defined in claim 45 wherein the anchor is an elongated fixture having a central axis and a threaded end adapted to be inserted into the patient's body.
48. The apparatus as defined in claim 47 wherein said elongated fixture further includes a substantially rigid wire adapted to be implanted at an angle to said elongated fixture to prevent said fixture from rotating.
49. The apparatus as defined in claim 45 wherein the object is a surgical instrument.
50. The apparatus as defined in claim 45 wherein the object is an implant.
51. The apparatus as defined in claim 45 wherein said position identification structure includes a fiducial array operable to register a location of the patient's body; and
a reference arc operable to identify a position of the patient's body.
52. The apparatus as defined in claim 51 wherein said fiducial array includes a plurality of rigidly connected fiducials and said reference arc includes a plurality of rigidly connected emitters.
53. The apparatus as defined in claim 45 wherein a portion of the patient's body is the spine.
54. The apparatus as defined in claim 45 wherein said position identification structure includes a fiducial array selected from a group comprising a W-shaped frame, a U-shaped frame, an X-shaped frame, and an H-shaped frame.
55. A method for monitoring the location of an object relative to a patient's body using a surgical navigation system, said method comprising:
attaching an anchor to a portion of the body;
movably attaching an identification structure having a fiducial array and a reference arc to said anchor;
providing a three-dimensional image of a patient, including said fiducial array attached to said anchor, said anchor being attached to the body to identify the position of said fiducial array on the three-dimensional image;
using the fiducial array to register a location of the body fixed to said fiducial array; and
using the reference arc to identify changes in position of the body during a surgical procedure;
inserting a threaded anchor into a spinal element; and
touching an image guided pointer to said threaded anchor to positively register a location of said fixture with the surgical navigation system.
56. The method as defined in claim 55 further comprising using an image guided system and touching an image guided surgical pointer to one or more fiducials on the fiducial array to register a location of the body to the array.
57. The method as defined in claim 55 further comprising emitting a signal from the reference arc to identify changes in position of the body during the surgical procedure.
58. The method as defined in claim 55 further comprising performing a surgical procedure percutaneously on a spine of the patient.
59. The method as defined in claim 58 further comprising locating an implant relative to the spine and an instrument associated with the implant.
60. The method as defined in claim 59 further comprising percutaneously implanting screws into spinal elements; and
locating the position of the screws.
61. The method as defined in claim 60 further comprising manipulating an orientation of screw heads associated with the screws percutaneously using a head-positioning probe, which is adapted to communicate with the surgical navigation system to orient the screw head.
62. The method as defined in claim 55 further comprising:
implanting imageable devices into spinal elements of the body to identify the location of the spinal elements with the surgical navigation system.
63. A method for monitoring the location of an object relative to a patient's body using a surgical navigation system, said method comprising:
attaching an anchor to a portion of the body;
movably attaching an identification structure having a fiducial array and a reference arc to said anchor;
providing a three-dimensional image of a patient, including said fiducial array attached to said anchor, said anchor being attached to the body to identify the position of said fiducial array on the three-dimensional image;
using the fiducial array to register a location of the body fixed to said fiducial array;
using the reference arc to identify changes in position of the body during a surgical procedure;
performing a surgical procedure percutaneously on a spine of the patient;
locating an implant relative to the spine and an instrument associated with the implant;
comprising percutaneously implanting screws into spinal elements;
locating the position of the screws;
manipulating an orientation of screw heads associated with the screws percutaneously using a head-positioning probe, which is adapted to communicate with the surgical navigation system to orient the screw head;
tracking a location and position of a connecting implant by use of an instrument attached to the connecting implant that include emitters capable of communicating orientational location to the surgical navigation system; and
attaching the connecting implant to the screw heads percutaneously.
Description

The present invention claims rights under 35 U.S.C. § 119 on provisional application No. 60/059,915, filed on Sep. 24, 1997, and entitled “Percutaneous Registration Apparatus and Method for Use in Computer-Assisted Surgical Navigation.”

FIELD OF THE INVENTION

The present invention relates generally to guiding, directing, or navigating instruments or implants in a body percutaneously, in conjunction with systems that use and generate images during medical and surgical procedures, which images assist in executing the procedures and indicate the relative position of various body parts, surgical implants, and instruments. In particular the invention relates to apparatus and minimally invasive procedures for navigating instruments and providing surgical implants percutaneously in the spine, for example, to stabilize the spine, correct deformity, or enhance fusion in conjunction with a surgical navigation system for generating images during medical and surgical procedures.

BACKGROUND OF THE INVENTION

Typically, spinal surgical procedures used, for example, to provide stabilization, fusion, or to correct deformities, require large incisions and substantial exposure of the spinal areas to permit the placement of surgical implants such as, for example, various forms of screws or hooks linked by rods, wires, or plates into portions of the spine. This standard procedure is invasive and can result in trauma, blood loss, and post operative pain. Alternatively, fluoroscopes have been used to assist in placing screws beneath the skin. In this alternative procedure at least four incisions must be made in the patient's back for inserting rods or wires through previously inserted screws. However, this technique can be difficult in that fluoroscopes only provide two-dimensional images and require the surgeon to rotate the fluoroscope frequently in order to get a mental image of the anatomy in three dimensions. Fluoroscopes also generate radiation to which the patient and surgical staff may become over exposed over time. Additionally, the subcutaneous implants required for this procedure may irritate the patient. A lever arm effect can also occur with the screws that are not connected by the rods or wires at the spine. Fluoroscopic screw placement techniques have traditionally used rods or plates that are subcutaneous to connect screws from vertebra to vertebra. This is due in part to the fact that there is no fluoroscopic technique that has been designed which can always adequately place rods or plates at the submuscular region (or adjacent to the vertebrae). These subcutaneous rods or plates may not be well tolerated by the patient. They also may not provide the optimal mechanical support to the spine because the moment arm of the construct can be increased, thereby translating higher loads and stresses through the construct.

A number of different types of surgical navigation systems have been described that include indications of the positions of medical instruments and patient anatomy used in medical or surgical procedures. For example, U.S. Pat. No. 5,383,454 to Bucholz; PCT Application No. PCT/US94/04530 (Publication No. WO 94/24933) to Bucholz; and PCT Application No. PCT/US95/12894 (Publication No. WO 96/11624) to Bucholz et al., the entire disclosures of which are incorporated herein by reference, disclose systems for use during a medical or surgical procedure using scans generated by a scanner prior to the procedure. Surgical navigation systems typically include tracking means such as, for example, an LED array on the body part, LED emitters on the medical instruments, a digitizer to track the positions of the body part and the instruments, and a display for the position of an instrument used in a medical procedure relative to an image of a body part.

Bucholz et al. WO 96/11624 is of particular interest, in that it identifies special issues associated with surgical navigation in the spine, where there are multiple vertebral bodies that can move with respect to each other. Bucholz et al. describes a procedure for operating on the spine during an open process where, after imaging, the spinous process reference points may move with respect to each other. It also discloses a procedure for modifying and repositioning the image data set to match the actual position of the anatomical elements. When there is an opportunity for anatomical movement, such movement degrades the fidelity of the pre-procedural images in depicting the intra-procedural anatomy. Therefore, additional innovations are desirable to bring image guidance to the parts of the body experiencing anatomical movement.

Furthermore, spinal surgical procedures are typically highly invasive. There is, thus, a need for more minimally invasive techniques for performing these spinal procedures, such as biopsy, spinal fixation, endoscopy, spinal implant insertion, fusion, and insertion of drug delivery systems, by reducing incision size and amount. One such way is to use surgical navigation equipment to perform procedures percutaneously, that is beneath the skin. To do so by means of surgical navigation also requires apparatus that can indicate the position of the spinal elements, such as, for example the vertebrae, involved in the procedure relative to the instruments and implants being inserted beneath the patient's skin and into the patient's spine. Additionally, because the spinal elements naturally move relative to each other, the user requires the ability to reorient these spinal elements to align with earlier scanned images stored in the surgical navigation system computer, to assure the correct location of those elements relative to the instruments and implants being applied or inserted percutaneously.

In light of the foregoing, there is a need in the art for apparatus and minimally invasive procedures for percutaneous placement of surgical implants and instruments in the spine, reducing the size and amount of incisions and utilizing surgical navigation techniques.

SUMMARY OF THE INVENTION

Accordingly, the present invention is directed to apparatus and procedures for percutaneous placement of surgical implants and instruments such as, for example, screws, rods, wires and plates into various body parts using image guided surgery. More specifically, one object of the present invention is directed to apparatus and procedures for the percutaneous placement of surgical implants and instruments into various elements of the spine using image guided surgery.

To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the invention includes an apparatus for use with a surgical navigation system and comprises an attaching device rigidly connected to a body part, such as the spinous process of a vertebrae, with an identification superstructure rigidly but removably connected to the attaching device. This identification superstructure is a reference arc and fiducial array, which accomplishes the function of identifying the location of the superstructure, and, therefore, the body part to which it is fixed, during imaging by CAT scan or MRI, and later during medical procedures.

In one aspect, the attaching device is a clamp with jaws and sharp teeth for biting into the spinous process.

In another aspect, the fixture is a screw, having a head, wherein the screw is implanted into the spinous process and a relatively rigid wire is attached to the head of the screw and also implanted into the spinous process at an angle to the axis of the screw to prevent the screw from rotating in either direction.

In another aspect, the superstructure includes a central post, and a fiducial array and a reference arc rigidly but removably attached to the central post. The fiducial array is composed of image-compatible materials, and includes fiducials for providing a reference point, indicating the position of the array, which are rigidly attaching to the fiducial array, composed of, for example titanium or aluminum spheres. The reference arc includes emitters, such as, for example Light Emitting Diodes (“LEDs”), passive reflective spheres, or other tracking means such as acoustic, magnetic, electromagnetic, radiologic, or micropulsed radar, for indicating the location of the reference arc and, thus, the body part it is attached to, during medical procedures.

In addition, the invention further comprises a method for monitoring the location of an instrument, surgical implants and the various portions of the body, for example, vertebrae, to be operated on in a surgical navigation system comprising the steps of: attaching a fixture to the spinous process; attaching a superstructure including a fiducial array with fiducials and a reference arc to the fixture; scanning the patient using CT, MRI or some other three-dimensional method, with fiducial array rigidly fixed to patient to identify it on the scanned image; and thereafter, in an operating room, using image-guided technology, touching an image-guided surgical pointer or other instrument to one or more of the fiducials on the fiducial array to register the location of the spinal element fixed to the array and emitting an audio, visual, radiologic, magnetic or other detectable signal from the reference arc to an instrument such as, for example, a digitizer or other position-sensing unit, to indicate changes in position of the spinal element during a surgical procedure, and performing a surgical or medical procedure percutaneously on the patient using instruments and implants locatable relative to spinal elements in a known position in the surgical navigation system.

In another aspect, the method includes inserting screws or rigid wires in spatial elements in the area involved in the anticipated surgical procedure before scanning the patient, and after scanning the patient and bringing the patient to the operating area, touching an image-guided or tracked surgical pointer to these screws and wires attached to the vertebrae to positively register their location in the surgical navigation computer, and manipulating either the patient's spine or the image to align the actual position of the spinal elements with the scanned image.

In another aspect, the method includes percutaneously implanting screws into spinal elements, which screws are located using image guided surgical navigation techniques, and further manipulating the orientation of the screw heads percutaneously using a head-positioning probe containing an emitter, that can communicate to the surgical navigation computer the orientation of the screw heads and position them, by use of a specially designed head-positioning tool with an end portion that mates with the heads of the screws and can rotate those screw heads to receive a rod, wire, plate, or other connecting implant. If a rod is being inserted into the screw heads for example, the method further includes tracking the location and position of the rod, percutaneously using a rod inserter having one or more emitters communicating the location and orientation of the rod to the surgical navigation computer.

The objects of the invention are to provide a user, such as a surgeon, with the system and method to track an instrument and surgical implants used in conjunction with a surgical navigation system in such a manner to operate percutaneously on a patient's body parts, such as spinal vertebrae which can move relative to each other.

It is a further object of this invention to provide a system and method to simply and yet positively indicate to the user a change in position of body parts, such as spinal vertebrae segments, from that identified in a stored image scan, such as from an MRI or CAT scan, and provide a method to realign those body parts to correspond with a previously stored image or the image to correspond with the actual current position of the body parts.

It is a further object of this invention to provide a system or method for allowing a fiducial array or reference arc that is removable from a location rigidly fixed to a body part and replaceable back in that precise location.

It is another object of this invention to provide a system and method for positively generating a display of instruments and surgical implants, such as, for example screws and rods, placed percutaneously in a patient using image-guided surgical methods and techniques.

It is another object of this invention for a percutaneous reference array and fiducial array, as described in this application, to be used to register and track the position of the vertebrae for the purposes of targeting a radiation dose to a diseased portion of said vertebrae using a traditional radiosurgical technique.

Additional objects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in this description.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate one embodiment of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic diagram of one preferred embodiment of a superstructure for use in the current invention, including a reference arc, center post and fiducial array and rigid Kirschner wires (“K wires”) and screws placed in the spine for use with a surgical navigation system for percutaneous spinal surgical procedures.

FIG. 1A is an enlarged view of the superstructure depicted in FIG. 1 engaging a vertebra by a clamp and also K wires implanted in adjacent vertebrae in the superior and inferior positions of the spinous process.

FIG. 2 is a diagram of the preferred embodiment of a clamp fixture for rigid connection to the spinous process of a single vertebrae with an H-shaped fiducial array attached to a center post rigidly attached to the clamp and a mating connector at the tip of the post for mating with a reference array, and a reference array for use in the current invention.

FIG. 2A is a side view of FIG. 2 FIG. 2B is another side view of FIG. 2.

FIG. 2C is a top view of FIG. 2.

FIG. 2D is an exploded view of FIG. 2 without the reference arc.

FIG. 2E is an exploded view of the interface of the center post and clamp of FIG. 2.

FIG. 3 is a diagram of a W-Shaped fiducial array mounted to a central post with generally spherical fiducials attached to the array, for mounting to a single vertebrae.

FIG. 3A is a side view of FIG. 3.

FIG. 3B is another side view of FIG. 3.

FIG. 3C is a top view of FIG. 3.

FIG. 4 is a diagram of a reference arc and fiducial attached to a center post for use in the current invention in mounting to a single vertebrae.

FIG. 4A is a side view of FIG. 4.

FIG. 4B is a back view of FIG. 4.

FIG. 4C is a top view of FIG. 4.

FIG. 4D is an expanded view of FIG. 4.

FIG. 4E is an expanded side view of FIG. 4.

FIG. 4F is an expanded view of the array foot and shoe of FIG. 4E.

FIG. 5 is a diagram of an alternative embodiment of a fixture for use in the current invention using a cannulated screw for insertion into a vertebrae, with Kirschner wire mounted on a central post and including an alternate embodiment of a fiduciary array and reference arc combined on a single structure.

FIG. 6 is a side view of the screw and Kirschner wire fixture of FIG. 5 implanted in a spinous process of a vertebrae.

FIG. 7 is a diagram of a screw-head positioning probe and multiaxial screw for insertion into a single vertebrae.

FIG. 7A is a diagram of the screw of FIG. 7.

FIG. 8 is a diagram of a head positioning probe, multiaxial screw and spinal segment.

FIG. 9 is a diagram of a rod inserter with an LED.

FIG. 10 is a diagram of an alternative embodiment of the invention depicting a cannulated tube and attachment for holding a reference arc.

FIG. 11 is a diagram of the cannulated tube of FIG. 10 with a reference arc and screw for attachment to a spinal process.

FIG. 12 is a posterior view of spinal segment and implanted screws before alignment.

FIG. 13 is a posterior view of spinal segment and implanted screws after alignment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Reference will now be made in detail to the present preferred embodiment of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. The following example is intended to be purely exemplary of the invention.

As generally described in PCT/US95/12894, the entire disclosure of which is incorporated herein by reference, a typical surgical navigation system is shown in FIG. 1 adopted to be used in the present invention. A computer assisted image-guided surgery system, indicated generally at 10, generates an image for display on a monitor 106 representing the position of one or more body elements, such as spinal elements fixedly held in a stabilizing frame or device such as a spinal surgery frame 125 commonly used for spinal surgery. A reference arc 120 bearing tracking means or emitters, such as for example LED emitters 122, is mounted to the spinous process by a central post 150. The structures 20 and K wires 260 of FIG. 1 are depicted in more detail in FIG. 1A. The image 105 is generated from an image data set, usually generated preoperatively by a CAT scanner or by MRI for example, which image 105 has reference points for at least one body element, such as a spinal element or vertebrae. The reference points of the particular body element have a fixed spatial relation to the particular body element.

The system includes an apparatus such as a digitizer or other Position Sensing Unit (PSU), such as for example sensor array 110 on support 112 for identifying, during the procedure, the relative position of each of the reference points to be displayed by tracking the position of emitters 122 on arc 120. The system also includes a processor 114 such as a PC or other suitable workstation processor associated with controller 108 for modifying the image data set according to the identified relative position of each of the reference points during the procedure, as identified by digitizer 110. The processor 114 can then, for example, generate an image data set representing the position of the body elements during the procedure for display on monitor 106. A surgical instrument 130, such as a probe or drill or other tool, may be included in the system, which is positioned relative to a body part and similarly tracked by sensor array 110.

In summary, the general operation of a surgical navigating system is well known in the art and need not further be described here.

In accordance with the preferred embodiment of the present invention, with further reference to FIGS. 1 through 6, a registration device 20 is rigidly fixed to a spinal element by, for example, a device such as a bone clamp 30 depicted in FIG. 2. Alternatively, a screw retention device 40, such as the cannulated screw 42 depicted in FIG. 5, and described in more detail below, can be used.

With reference now to FIG. 2, bone clamp 30 is fixedly attached to the spinous process. The clamp 30 includes at least two blades (or jaws) 32 with tips or teeth 34, which are preferably sharp, for driving together and penetrating soft tissue or more dense bone for rigid fixation to the spinous process. The teeth 34 are also preferably sized to accommodate the bulb shape of the spinous process. The driving mechanism 40 is, for example, a screw driven into a sleeve 41 and is also preferably located such that it will be accessible in a percutaneous manner. Attached to the clamp 30 is a superstructure 20. The superstructure 20 includes a central post 150 which is relocatable, that is, it fixes to the clamp 30 in a rigid fashion, for example, as depicted in FIGS. 2D and 2E, by being inserted into a V-shaped wedge 44 orienting the post 150 front to back and providing a mating hole 48 along the wedge 44 for insertion of post 150 in a single orientation and also providing fasteners such as screw 43 for tightning to lock the post 150 in place. The post 150 can be removed and reapplied by loosening and tightening screw 43, such that the original geometry and orientation is maintained. The central post 150 has at its apex a connector 60 with unique geometrical configuration, such as, for example, a starburst, onto which a spinal reference arc 120 of the superstructure 20 attaches. Any such standard reference arc 120 can be used, such as depicted in FIGS. 1A, 4, and 11, preferably including emitters 122, such as for example LEDs or reflective spheres for providing a positive indication of movement to the surgical navigation system during a procedure.

Also rigidly attached to the central post 150, as part of the superstructure 20 preferably at a location closer to the skin, or possibly collocated with or also performing the function of the reference arc 120, is a fiducial array 170, which can be of various different shapes, such as, for example the H-shaped frame 170 depicted in FIG. 2, the W-shaped frame 170′ as depicted in FIG. 3, the U-shaped frame 170″ as depicted in FIG. 4 or the X-shaped frame 120′, 170″′ depicted in FIG. 5 (depicting a structure that is both a fiducial array and a reference arc). As depicted in FIGS. 2 and 3, this array can include fiducial points 29 or spheres 17, rigidly attached to fiducial array 170, 170′ and is, for example, as depicted in FIG. 3, substantially in the shape of spheres 17 and of a material detectable by the CAT scan or MRI, preferably titanium or aluminum. This fiducial array such as 170 indicates to the surgical navigation system the location of the bone structure to which the clamp 30 and central post 150 are attached by touching a pointed surgical tracker to fiducial points 29 or a cup-shaped probe to fiducial spheres 17, thereby indicating the center of the fiducial to the surgical navigation controller 114. The array 170 and central post 150 are also attached to the clamp 30, as described above, in such a way that they can be removed and replaced in the same geometric orientation and location, for example, by means of a uniquely shaped interface, for example, a triangle, or a single unique shape or a combination of unique angles or pins with the clamp 30 such that the post 150 can only be reinserted the same way it was removed.

Additionally, the fiducial array 170, can be located at various heights on the post 150 to accommodate variations in patient tissue depth and size, preferably as close to the patient's body as possible, and then fixed at that specific height by the use of pins or indents matched to holes 19 (shown in FIG. 2) in the central post 150 or by placing the rods 39 of H-shaped array 170 in different holes 31. The fiducial array 170 also has, for example, divots 29 (shown in FIG. 2) shaped to interface with an instrument such as a surgical pointer 130 which can touch that divot 29 to register the location of the divot 29 and, thus, the location of the fiducial array 170 and likewise the spinal element in the surgical navigation system. Multiple divots can be registered to further increase accuracy of the registration system. In one preferred embodiment of the array, the fiducials 17 or 29 can be mounted in a manner such that they can be adjusted, for example by mounting them on a rotatable or collapsible arm 66 (as depicted in FIG. 3) that pivots and folds together, to get the maximum distance between fiducials while not dramatically increasing the field of view required at the time of scanning.

Alternatively, rather than using clamp 30, a screw 42 and rigid wire 45 attachment, as depicted in FIGS. 5 and 6, may be used to rigidly attach the central post of the superstructure 20 to a body element, such as, for example, a vertebrae. As depicted in FIG. 6, screw 42 is screwed into the spinal process of spinal element 100. A rigid wire 45, post, or other sufficiently rigid fastener such as for example a Kirschner wire (K-wire), is inserted through the cannulation in the center of post 150 and the screw 42 or is otherwise fixed to the screw 42, and exits the tip of the screw 42 at some angle, and is also implanted into the spinal element 100 to prevent the screw 42 from rotating in either direction.

Another embodiment for preventing the superstructure 20 from rotating as depicted in FIGS. 10 and 11 includes the insertion of a screw 85 through a cannulated tube 86 which has teeth 89 in the end (or V-shaped end) that would bite into the tip of the spinous process, preventing rotation.

Having described the preferred embodiment of this apparatus of the present system, the method of using this apparatus to practice the invention of registering a single vertebrae will now be discussed. The operation of a surgical navigating system is generally well known and is described in PCT/US95/12894. In the preferred method of operation, clamp 30 of FIG. 2 or screw 42 and K-Wire 45 of FIG. 5 are implanted percutaneously through a small incision in the skin and rigidly attached to the spinal process. This attachment occurs with the clamp 30, by driving the blades 32 of the clamp 30 together to hold the spinous process rigidly. The central post 150 is then rigidly fixed to the clamp 30 or screw 42 and the fiducial array 170 is rigidly fixed to the central post 150. The patient is then scanned and imaged with a CAT scan or MRI with a field of view sufficiently large to display the spinal anatomy and the clamp 30 or screw 42 and the fiducial array 170. This scan is loaded into the surgical navigation system processor 104.

After scanning the patient, the array 120 and post 150 can be removed from the patient, while leaving in place the rigidly connected clamp 30 or screw 42. For example, as depicted in FIGS. 4D and 4E, a foot 55 located below array 170″ engages with shoe 56 and rigidly connected by screws 57 and 58. Before the surgical procedure, the post 150, array 120 and other remaining portions of the superstructure 20, once removed, may be sterilized. The patient is then moved to the operating room or similar facility from, for example, the scanning room.

Once in the operating room, the patient may be positioned in an apparatus, such as, for example, a spinal surgery frame 125 to help keep the spinal elements in a particular position and relatively motionless. The superstructure 20 is then replaced on the clamp 30 or screw 42 in a precise manner to the same relative position to the spinal elements as it was in the earlier CAT scan or MRI imaging. The reference arc 120 is fixed to the starburst or other interface connector 60 on the central post 150 which is fixed to the clamp 30 or screw 42. The operator, for example a surgeon, then touches an instrument with a tracking emitter such as a surgical pointer 130 with emitters 195 to the divots 29 on the fiducial array 170 to register the location of the array 170 and, thus, because the spinal process is fixed to the fiducial array 170, the location of the spinal element is also registered in the surgical navigation system.

Once the superstructure 20 is placed back on the patient, any instrument 130 fitted with tracking emitters thereon such as, for example, a drill or screw driver, can be tracked in space relative to the spine in the surgical navigation system without further surgical exposure of the spine. The position of the instrument 130 is determined by the user stepping on a foot pedal 116 to begin tracking the emitter array 190. The emitters 195 generate infrared signals to be picked up by camera digitizer array 110 and triangulated to determine the position of the instrument 130. Additionally, other methods may be employed to track reference arcs, pointer probes, and other tracked instruments, such as with reflective spheres, or sound or magnetic emitters, instead of LED's. For example, reflective spheres can reflect infrared light that is emitted from the camera array 110 back to the camera array 110. The relative position of the body part, such as the spinal process is determined in a similar manner, through the use of similar emitters 122 mounted on the reference frame 120 in mechanical communication with the spinal segment. As is well known in this art and described generally in PCT/US95/12894, based upon the relative position of the spinal segment and the instrument 130 (such as by touching a known reference point) the computer would illustrate a preoperative scan—such as the proper CAT scan slice—on the screen of monitor 106 which would indicate the position of the tool 130 and the spinal segment for the area of the spine involved in the medical procedure.

For better access by the operator of various areas near the central post 150, the fiducial array 170 can be removed from the central post 150, by, for example, loosening screw 42 and sliding the array 170 off post 150, leaving the reference arc 120 in place or replacing it after removal of array 170. By leaving the reference arc 120 in place, the registration of the location of the spinal process is maintained. Additionally, the central post 150, reference arc 120, and fiducial array 170 can be removed after the spinal element has been registered leaving only the clamp 30 or screw 42 in place. The entire surgical field can then be sterilized and a sterile post 150 and reference arc 170 fixed to the clamp 30 or screw 42 with the registration maintained.

This surgical navigation system, with spinal element registration maintained, can then be used, for example, to place necessary and desired screws, rods, hooks, plates, wires, and other surgical instruments and implants percutaneously, using image-guided technology. Once the location of the spinal element 100 involved in the procedure is registered, by the process described above, in relation to the image data set and image 105 projected on monitor 106, other instruments 130 and surgical implants can be placed under the patient's skin at locations indicated by the instrument 130 relative to the spinal element 100.

Additionally, the location of other spinal elements, relative to the spinal element 100 containing the fiducial array 170, can be registered in the surgical navigation system by, for example, inserting additional screws 250, rigid wires 260, or other rigid implants or imageable devices into the spinal segment.

For example, as depicted in FIG. 1, and in more detail FIG. 1A, additional screws 250 or rigid and pointed wires 260 are placed in the vertebrae adjacent to the vertebrae containing the clamp 30 and post 150 prior to scanning. On the image 105 provided by monitor 106, the surgeon can see the clamp 30 or screw 42 and fiducial array 170 and also the additional screws 250, wires 260 or other imageable devices. When screws 250 or other devices are used, these screws 250 (as depicted in FIG. 7) may contain a divot 256 or other specially shaped interface on the head 255 so that a pointer probe 130 can be used to point to the head 255 of the screw 250 (or wire) and indicate the orientation of the screw 250 or wire 260 to the surgical navigation system by communicating to the controller 114 or by emission from LEDs 195 on probe 130 to digitizer 110. The image of these additional screws 250 also appear in the scan. Once the patient is then moved to the operating facility, rather than the scanning area, the image of the screw 250 can be compared to the actual position of the screw 250 as indicated by the pointer probe 130 that is touched to the head 255 of the screw 250 or wire 260. If necessary, the operator can manipulate the position of the patient to move the spinal element and thus the location of the screw 250 or wire 260 to realign the spinal elements with the earlier image of the spin. Alternatively, the operator can manipulate the image to correspond to the current position of the spinal segments.

For additional positioning information, the operator can place additional rigid wires 260 or screws 250 into the vertebrae, for example, located at the superior (toward the patient's head) and inferior (towards the patient's feet) ends of the spinal process to more accurately position those vertebrae relative to the other vertebrae and the image data. Additionally, the wires 260 and screws 250 implanted to provide positioning information can also be equipped with emitters, such as, for example, LEDs, to provide additional information to the surgical navigation system on the location of the wire 260 or screw 250, and thus the vertebra to which they are affixed.

Alternatively, the patient can be placed in a position stabilizing device, such as a spinal surgery frame 125 or board, before a scan is taken, and then moved to the operating facility for the procedure, maintaining the spine segments in the same position from the time of scanning until the time of surgery. Alternatively, a fluoroscope can be used to reposition the spinal segments relative to the earlier image from the scan. An ultrasound probe can be used to take real-time images of the spinal segment which can be portrayed by monitor 106 overlayed or superimposed on image 105. Then the operator can manually manipulate the spinal elements and take additional images of these elements with the fluoroscope to, in an iterative fashion, align the spinal elements with the previously scanned image 105.

Alternatively, a clamp 30 or screw 42 and superstructure 20 can be rigidly fixed to each vertebra involved in the surgical or medical procedure to register the position of each vertebra as explained previously for a single vertebra.

After the spinal elements are registered in the spine, various medical and surgical procedures can be performed on that patient. For example, spinal implants, endoscopes, or biopsy probes can be passed into the spine and procedures such as, for example, spinal fusion, manipulation, or disc removal can be performed percutaneously and facilitated by the surgical navigation image-guiding system. Additionally, a radiation dose can be targeted to a specific region of the vertebrae.

One such procedure facilitated by the apparatus and methods described above is the percutaneous insertion of screws and rods, fixed to different vertebra in a spine to stabilize them. Once screws, for example multiaxial screws 250, (as depicted in FIG. 12, before manipulation) are implanted through small incisions they can be manipulated by a head-positioning probe 280. The final position of screws 250 and heads 255 are depicted in FIG. 13. This probe 280, as depicted in FIG. 7, includes a head 285 that mates in a geometrically unique fashion with the head 255 of the screw 250. An emitter, such as for example an LED array 380 on the probe 280, indicates the location and orientation of the screw head 255 to the computer 114 of the surgical navigation system by providing an optical signal received by digitizer 110. The screw head 255 can then be rotatably manipulated under the patient's skin by the head positioning probe 280 to be properly oriented for the receipt of a rod 360 inserted through the rotating head 255. The operator can then plan a path from the head 255 of each screw 250 to the other screws 250 to be connected. Then, with reference now to FIG. 9, an optically tracked rod inserter 245 also equipped with emitters, such as, for example LEDs 247, can be placed through another small incision to mate with and guide a rod 360 through the holes or slots in the screw heads 245, through and beneath various tissues of the patient, with the rod inserter 245, and, therefore, the rod 360, fixed to the inserter 245, being tracked in the surgical navigation system. The operator can also use the computer 114 to determine the required bending angles of the rod 360. For greater visualization, the geometry of the screws 250 could be loaded into the computer 114 and when the position and orientation of the head 255 is given to the computer 114 via the probe 280, the computer 114 could place this geometry onto the image data and three-dimensional model. The rod 360 geometry could also be loaded into the computer 114 and could be visible and shown in real time on monitor 106 as the operator is placing it in the screw heads 255.

In an alternative procedure, one or more plates and/or one or more wires may be inserted instead of one or more rods 360.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention and in construction of this surgical navigation system without departing from the scope or spirit of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1576781Apr 22, 1924Mar 16, 1926Philips Herman BFluoroscopic fracture apparatus
US1735726Dec 20, 1927Nov 12, 1929 bornhardt
US2407845Jan 16, 1943Sep 17, 1946California Inst Res FoundAligning device for tools
US2697433Dec 4, 1951Dec 21, 1954Max A ZehnderDevice for accurately positioning and guiding guide wires used in the nailing of thefemoral neck
US3016899Nov 3, 1958Jan 16, 1962Carl B StenvallSurgical instrument
US3017887Jan 19, 1960Jan 23, 1962William T HeyerStereotaxy device
US3061936Jul 8, 1959Nov 6, 1962Univ LouvainStereotaxical methods and apparatus
US3073310Aug 5, 1957Jan 15, 1963Zenon R MocarskiSurgical instrument positioning device
US3294083Aug 26, 1963Dec 27, 1966Alderson Res Lab IncDosimetry system for penetrating radiation
US3367326Jun 15, 1965Feb 6, 1968Calvin H. FrazierIntra spinal fixation rod
US3439256Feb 23, 1967Apr 15, 1969Merckle Flugzeugwerke GmbhInductive angular position transmitter
US3577160Jan 10, 1968May 4, 1971James E WhiteX-ray gauging apparatus with x-ray opaque markers in the x-ray path to indicate alignment of x-ray tube, subject and film
US3674014Oct 21, 1970Jul 4, 1972Astra Meditec AbMagnetically guidable catheter-tip and method
US3702935Oct 13, 1971Nov 14, 1972Litton Medical ProductsMobile fluoroscopic unit for bedside catheter placement
US3704707Apr 6, 1971Dec 5, 1972William X HalloranOrthopedic drill guide apparatus
US3821469 *May 15, 1972Jun 28, 1974Amperex Electronic CorpGraphical data device
US3868565Jul 30, 1973Feb 25, 1975Jack KuipersObject tracking and orientation determination means, system and process
US3941127Oct 3, 1974Mar 2, 1976Froning Edward CApparatus and method for stereotaxic lateral extradural disc puncture
US3983474 *Feb 21, 1975Sep 28, 1976Polhemus Navigation Sciences, Inc.Tracking and determining orientation of object using coordinate transformation means, system and process
US4037592May 4, 1976Jul 26, 1977Kronner Richard FGuide pin locating tool and method
US4052620Nov 28, 1975Oct 4, 1977Picker CorporationMethod and apparatus for improved radiation detection in radiation scanning systems
US4054881Apr 26, 1976Oct 18, 1977The Austin CompanyRemote object position locater
US4058114Sep 10, 1975Nov 15, 1977Siemens AktiengesellschaftUltrasonic arrangement for puncturing internal body organs, vessels and the like
US4117337Nov 3, 1977Sep 26, 1978General Electric CompanyPatient positioning indication arrangement for a computed tomography system
US4173228May 16, 1977Nov 6, 1979Applied Medical DevicesCatheter locating device
US4202349Apr 24, 1978May 13, 1980Jones James WRadiopaque vessel markers
US4209254Feb 1, 1979Jun 24, 1980Thomson-CsfSystem for monitoring the movements of one or more point sources of luminous radiation
US4259725Mar 1, 1979Mar 31, 1981General Electric CompanyCursor generator for use in computerized tomography and other image display systems
US4262306Nov 21, 1979Apr 14, 1981Karlheinz RennerMethod and apparatus for monitoring of positions of patients and/or radiation units
US4287809Aug 20, 1979Sep 8, 1981Honeywell Inc.Helmet-mounted sighting system
US4314251Jul 30, 1979Feb 2, 1982The Austin CompanyRemote object position and orientation locater
US4317078Oct 15, 1979Feb 23, 1982Ohio State University Research FoundationRemote position and orientation detection employing magnetic flux linkage
US4339953Aug 29, 1980Jul 20, 1982Aisin Seiki Company, Ltd.Position sensor
US4341220Apr 13, 1979Jul 27, 1982Pfizer Inc.Stereotactic surgery apparatus and method
US4358856Oct 31, 1980Nov 9, 1982General Electric CompanyMultiaxial x-ray apparatus
US4368536Nov 19, 1980Jan 11, 1983Siemens AktiengesellschaftDiagnostic radiology apparatus for producing layer images
US4396885Jun 3, 1980Aug 2, 1983Thomson-CsfDevice applicable to direction finding for measuring the relative orientation of two bodies
US4396945Aug 19, 1981Aug 2, 1983Solid Photography Inc.Method of sensing the position and orientation of elements in space
US4398540Nov 4, 1980Aug 16, 1983Tokyo Shibaura Denki Kabushiki KaishaCompound mode ultrasound diagnosis apparatus
US4403321Apr 15, 1981Sep 6, 1983U.S. Philips CorporationSwitching network
US4418422Mar 11, 1981Nov 29, 1983Howmedica International, Inc.Aiming device for setting nails in bones
US4419012Sep 3, 1980Dec 6, 1983Elliott Brothers (London) LimitedPosition measuring system
US4422041Jul 30, 1981Dec 20, 1983The United States Of America As Represented By The Secretary Of The ArmyMagnet position sensing system
US4431005May 7, 1981Feb 14, 1984Mccormick Laboratories, Inc.Method of and apparatus for determining very accurately the position of a device inside biological tissue
US4457311Sep 3, 1982Jul 3, 1984Medtronic, Inc.Ultrasound imaging system for scanning the human back
US4485815Aug 30, 1982Dec 4, 1984Kurt AmplatzDevice and method for fluoroscope-monitored percutaneous puncture treatment
US4543959Jan 25, 1985Oct 1, 1985Instrumentarium OyDiagnosis apparatus and the determination of tissue structure and quality
US4548208Jun 27, 1984Oct 22, 1985Medtronic, Inc.Automatic adjusting induction coil treatment device
US4572198Jun 18, 1984Feb 25, 1986Varian Associates, Inc.Catheter for use with NMR imaging systems
US4583538May 4, 1984Apr 22, 1986Onik Gary MMethod and apparatus for stereotaxic placement of probes in the body utilizing CT scanner localization
US4584577Oct 17, 1983Apr 22, 1986Brookes & Gatehouse LimitedAngular position sensor
US4592352Nov 30, 1984Jun 3, 1986Patil Arun AComputer-assisted tomography stereotactic system
US4602622Nov 3, 1980Jul 29, 1986Siemens AktiengesellschaftMedical examination installation
US4608977Dec 20, 1982Sep 2, 1986Brown Russell ASystem using computed tomography as for selective body treatment
US4613866May 13, 1983Sep 23, 1986Mcdonnell Douglas CorporationThree dimensional digitizer with electromagnetic coupling
US4625718Jun 7, 1985Dec 2, 1986Howmedica International, Inc.For use in making transverse bores in a patient's bone
US4638798Sep 10, 1980Jan 27, 1987Shelden C HunterStereotactic method and apparatus for locating and treating or removing lesions
US4642786May 25, 1984Feb 10, 1987Position Orientation Systems, Ltd.Method and apparatus for position and orientation measurement using a magnetic field and retransmission
US4649504May 22, 1984Mar 10, 1987Cae Electronics, Ltd.Optical position and orientation measurement techniques
US4651732Apr 11, 1985Mar 24, 1987Frederick Philip RThree-dimensional light guidance system for invasive procedures
US4653509Jul 3, 1985Mar 31, 1987The United States Of America As Represented By The Secretary Of The Air ForceGuided trephine samples for skeletal bone studies
US4686997Nov 13, 1986Aug 18, 1987The United States Of America As Represented By The Secretary Of The Air ForceSkeletal bone remodeling studies using guided trephine sample
US4701049Jun 19, 1984Oct 20, 1987B.V. Optische Industrie "De Oude Delft"Measuring system employing a measuring method based on the triangulation principle for the non-contact measurement of a distance from the surface of a contoured object to a reference level. _
US4705395Oct 3, 1984Nov 10, 1987Diffracto Ltd.Triangulation data integrity
US4705401Aug 12, 1985Nov 10, 1987Cyberware Laboratory Inc.Rapid three-dimensional surface digitizer
US4706665Dec 17, 1984Nov 17, 1987Gouda Kasim IFor neurosurgery of the brain
US4719419Jul 15, 1985Jan 12, 1988Harris Graphics CorporationApparatus for detecting a rotary position of a shaft
US4722336Jan 25, 1985Feb 2, 1988Michael KimTo locate a targe object within visually opaque but x-ray transparent object
US4723544Jul 9, 1986Feb 9, 1988Moore Robert RHemispherical vectoring needle guide for discolysis
US4727565Nov 13, 1984Feb 23, 1988Ericson Bjoern EMethod of localization
US4733661Apr 27, 1987Mar 29, 1988Palestrant Aubrey MGuidance device for C.T. guided drainage and biopsy procedures
US4737794Dec 9, 1985Apr 12, 1988Mcdonnell Douglas CorporationMethod and apparatus for determining remote object orientation and position
US4737921Jun 3, 1985Apr 12, 1988Dynamic Digital Displays, Inc.Three dimensional medical image display system
US4750487Nov 24, 1986Jun 14, 1988Zanetti Paul HStereotactic frame
US4760851 *Mar 31, 1986Aug 2, 1988Faro Medical Technologies Inc.3-dimensional digitizer for skeletal analysis
US4771787Dec 11, 1986Sep 20, 1988Richard Wolf GmbhUltrasonic scanner and shock wave generator
US4779212Aug 6, 1986Oct 18, 1988Levy Nessim IDistance measuring device
US4782239Apr 1, 1986Nov 1, 1988Nippon Kogaku K. K.Optical position measuring apparatus
US4788481Mar 10, 1987Nov 29, 1988Mitsubishi Denki Kabushiki KaishaNumerical control apparatus
US4791934Aug 7, 1986Dec 20, 1988Picker International, Inc.Computer tomography assisted stereotactic surgery system and method
US4793355Apr 17, 1987Dec 27, 1988Biomagnetic Technologies, Inc.Apparatus for process for making biomagnetic measurements
US4797907Aug 7, 1987Jan 10, 1989Diasonics Inc.Battery enhanced power generation for mobile X-ray machine
US4805615Jul 2, 1985Feb 21, 1989Carol Mark PMethod and apparatus for performing stereotactic surgery
US4809694May 19, 1987Mar 7, 1989Ferrara Vincent LBiopsy guide
US4821206Oct 23, 1987Apr 11, 1989Photo Acoustic Technology, Inc.Ultrasonic apparatus for positioning a robot hand
US4836778May 26, 1987Jun 6, 1989Vexcel CorporationMandibular motion monitoring system
US4841967Jan 30, 1984Jun 27, 1989Chang Ming ZPositioning device for percutaneous needle insertion
US4845771Jun 29, 1987Jul 4, 1989Picker International, Inc.Exposure monitoring in radiation imaging
US4849692Oct 9, 1986Jul 18, 1989Ascension Technology CorporationDevice for quantitatively measuring the relative position and orientation of two bodies in the presence of metals utilizing direct current magnetic fields
US4862893Feb 2, 1988Sep 5, 1989Intra-Sonix, Inc.Ultrasonic transducer
US4875478Apr 5, 1989Oct 24, 1989Chen Harry HPortable compression grid & needle holder
US4889526Nov 13, 1987Dec 26, 1989Magtech Laboratories, Inc.Non-invasive method and apparatus for modulating brain signals through an external magnetic or electric field to reduce pain
US4896673Jul 15, 1988Jan 30, 1990Medstone International, Inc.Method and apparatus for stone localization using ultrasound imaging
US4905698Sep 13, 1988Mar 6, 1990Pharmacia Deltec Inc.Method and apparatus for catheter location determination
US4931056Oct 24, 1988Jun 5, 1990Neurodynamics, Inc.Catheter guide apparatus for perpendicular insertion into a cranium orifice
US4943296Dec 12, 1988Jul 24, 1990Life Technology Research FoundationRobot for surgical operation
US4945305Apr 11, 1989Jul 31, 1990Ascension Technology CorporationDevice for quantitatively measuring the relative position and orientation of two bodies in the presence of metals utilizing direct current magnetic fields
US4945914Jul 18, 1988Aug 7, 1990Allen George SMethod and apparatus for providing related images over time of a portion of the anatomy using at least four fiducial implants
US4955891Oct 22, 1987Sep 11, 1990Ohio Medical Instrument Company, Inc.Method and apparatus for performing stereotactic surgery
US4971069 *Sep 28, 1988Nov 20, 1990Diagnospine Research Inc.Method and equipment for evaluating the flexibility of a human spine
US4977655Apr 18, 1989Dec 18, 1990Intra-Sonix, Inc.Method of making a transducer
US4989608Apr 28, 1989Feb 5, 1991Ratner Adam VDevice construction and method facilitating magnetic resonance imaging of foreign objects in a body
US4991579Nov 10, 1987Feb 12, 1991Allen George SMethod and apparatus for providing related images over time of a portion of the anatomy using fiducial implants
US6236875 *Oct 5, 1995May 22, 2001Surgical Navigation TechnologiesSurgical navigation systems including reference and localization frames
USRE35816 *Mar 30, 1995Jun 2, 1998Image Guided Technologies Inc.Method and apparatus for three-dimensional non-contact shape sensing
DE19715202A1 *Apr 11, 1997Oct 15, 1998Brainlab Med Computersyst GmbhPosition referencing system for medical examinations or treatment
EP0018166A1 *Apr 9, 1980Oct 29, 1980Pfizer Inc.Apparatus for use in stereotactic surgery
EP0326768A2 *Dec 13, 1988Aug 9, 1989Faro Medical Technologies Inc.Computer-aided surgery apparatus
EP0359773B1 *May 21, 1988Oct 6, 1993Schlöndorff, Georg, Prof. Dr. med.Process and device for optical representation of surgical operations
EP0427358A1 *Oct 19, 1990May 15, 1991George S. AllenMechanical arm for and interactive image-guided surgical system
EP0456103A2 *May 2, 1991Nov 13, 1991International Business Machines CorporationImage-directed robotic system for precise surgery
EP0496966A1 *Nov 19, 1991Aug 5, 1992Silvio CarmeliActuator
EP0501993B1 *Nov 21, 1990Jun 11, 1997I.S.G. Technologies Inc.Probe-correlated viewing of anatomical image data
WO1988009151A1 *May 21, 1988Dec 1, 1988Georg SchloendorffProcess and device for optical representation of surgical operations
WO1991007726A1 *Nov 21, 1990May 30, 1991I S G Technologies IncProbe-correlated viewing of anatomical image data
WO1992006645A1 *Oct 17, 1991Apr 30, 1992Univ St LouisSurgical probe locating system for head use
WO1994023647A1 *Apr 22, 1994Oct 27, 1994Pixsys IncSystem for locating relative positions of objects
WO1994024933A1 *Apr 25, 1994Nov 10, 1994Univ St LouisIndicating the position of a surgical probe
WO1996011624A2 *Oct 5, 1995Apr 25, 1996Univ St LouisSurgical navigation systems including reference and localization frames
WO1996032059A1 *Nov 6, 1995Oct 17, 1996Compass International IncMagnetic field digitizer for stereotactic surgery
WO1997040764A2 *Apr 25, 1997Nov 6, 1997James L DayApparatus for surgical stereotactic procedures
Non-Patent Citations
Reference
1"Prestige Cervical Disc System Surgical Technique" Brochure, 12 pgs.
23-D Digitizer Captures the World, BYTE, Oct. 1990, p. 43.
3Adams et al., "Orientation Aid for Head and Neck Surgeons," Innov. Tech. Biol. Med., vol. 12, No. 4, 1992, pp. 409-424.
4Adams et al., Computer-Assisted Surgery, IEEE Computer Graphics & Applications, May 1990, pp. 43-51.
5Alignment Procedure for the PixSys Two-Emitter Offset Probe for the SAC GP-8-3d Sonic Digitizer, PixSys, Jul. 2, 1992, pp. 1-4.
6Awwad et al., Post-Traumatic Spinal Synovial Cyst with Spondylolysis: CT Features, Journal of Computer Assisted Tomography, vol. 13, No. 2, 1989, pp. 334-337.
7Barrick et al., "Prophylactic Intramedullary Fixation of the Tibia for Stress Fracture in a Professional Athlete," Journal of Orthopaedic Trauma, vol. 6, No. 2, pp. 241-244 (1992).
8Batnitzky et al., "Three-Dimensional Computer Reconstructions of Brain Lesions from Surface Contours Provided by Computed Tomography: A Prospectus," Neurosurgery, vol. 11, No. 1, Part 1, 1982, pp. 73-84.
9Benzel, Edmund C. et al., "Magnetic Source Imaging: a Review of the Magnes System of Biomagnetic Technologies Incorporated," Neurosurgery, vol. 33, No. 2 (Aug. 1993), pp. 252-259.
10Bouazza-Marouf et al.; "Robotic-Assisted Internal Fixation of Femoral Fractures", IMECHE., pp. 51-58 (1995).
11Brack, C. et al., "Accurate X-ray Based Navigation in Computer-Assisted Orthopedic Surgery," CAR '98, pp. 716-722.
12Bryan, "Bryan Cervical Disc System Single Level Surgical Technique", Spinal Dynamics Brochure, 2002, pp. 1-33 (described by Vincent Bryan).
13Bucholz et al., Halo Vest Versus Spinal Fusion for Cervical Injury: Evidence from an Outcome Study, J. Neurosurg., vol. 70, pp. 884-892.
14Bucholz et al., Image-Guided Surgical Techniques for Infections and Trauma of the Central Nervous System, Neurosurgery Clinics of North America, vol. 7, No. 2, Apr. 1996, pp. 187-200.
15Bucholz et al., Intraoperative Localization Using a Three Dimensional Optical Digitizer, SPIE, vol. 1894, Jan. 17, 1993, pp. 312-322.
16Bulcholz, Richard D. et al., "Variables affecting the accuracy of stereotactic localization using computerized tomography," Journal of Neurosurgery, vol. 79, Nov. 1993, pp. 667-673.
17Champleboux et al., "Accurate Calibration of Cameras and Range Imaging Sensors: the NPBS Method," IEEE International Conference on Robotics and Automation, Nice, France, May, 1992.
18Champleboux, Guillerne "Utilisation de Fonctions Splines Pour la Mise au Point D'un Capteur Tridimensionnel sans Contact," Quelques Applications Medicales, Jul. 1991.
19Cinquin et al., "Computer Assisted Medical Interventions," IEEE Engineering in Medicine and Biology, May/Jun. 1995, pp. 254-263.
20Cinquin et al., "Computer Assisted Medical Interventions," International Advanced Robotics Programme, Sep. 1989, pp. 63-65.
21Cinquin et al., GOR: Image Guided Operating Robot. Methodology, Applications, IEEE EMBS, Paris 1992, pp. 1-2.
22Clarysse et al., "A Computer-Assisted System for 3-D Frameless Localization in Stereotaxic MRI," IEEE Transactions on Medical Imaging, vol. 10, No. 4, Dec. 1991, pp. 523-529.
23Feldmar et al., "3D-2D Projective Registration of Free-Form Curves and Surfaces," Rapport de recherche (Inria Sophia Antipolis), 1994, pp. 1-44.
24Foley et al., "Fundamentals of Interactive Computer Graphics," The Systems Programming Series, Chapter 7, Jul. 1984, pp. 245-266.
25Foley et al., Image-Guided Intraoperative Spinal Localization, Intraoperative Neuroprotection: Monitoring, Part Three, 1996, pp. 325-340.
26Germano, "Instrumentation, Technique, and Technology", Neurosurgery, vol. 37, No. 2, Aug. 1995, pp. 348-350.
27Gildenberg et al., "Calculation of Stereotactic Coordinates from the Computed Tomographic Scan," Neurosurgery, vol. 10, No. 5, May 1982, pp. 580-586.
28Gonzalez, "Digital Image Fundamentals," Digital Image Processing, Second Edition, 1987, pp. 52-54.
29Gottesfeld Brown et al., "Registration of Planar Film Radiographs with Computer Tomography," Proceedings of MMBIA, Jun. '96, pp. 42-51.
30Gueziec et al., "Registration of Computed Tomography Data to a Surgical Robot Using Fluoroscopy: A Feasibility Study," Computer Science/Mathematics, Sep. 27, 1996, 6 pages.
31Hamadeh et al, "Kinematic Study of Lumbar Spine Using Functional Radiographies and 3D/2D Registration," TIMC UMR 5525 - IMAG, 1997.
32Hamadeh et al., "Automated 3-Dimensional Computed Tomographic and Fluorscopic Image Registration," Computer Aided Surgery (1998), 3:11-19.
33Hamadeh et al., "Towards Automatic Registration Between CT and X-ray Images: Cooperation Between 3D/2D Registration and 2D Edge Detection," MRCAS '95, pp. 39-46.
34Hatch, et al. "Reference-Display System for the Integration of CT Scanning and the Operating Microscope," Thesis, Thayer School of Engineering, Oct. 1984, pp. 1-189.
35Hatch, et al., "Reference-Display System for the Integration of CT Scanning and the Operating Microscope", Proceedings of the Eleventh Annual Northeast Bioengineering Conference, May, 1985, pp. 252-254.
36Henderson et al., "An Accurate and Ergonomic Method of Registration for Image-guided Neurosurgery," Computerized Medical Imaging and Graphics, vol. 18, No. 4, Jul.-Aug. 1994, pp. 273-277.
37Hoerenz, "The Operating Microscope I. Optical Principles, Illumination Systems, and Support Systems," Journal of Microsurgery, vol. 1, 1980, pp. 364-369.
38Hofstetter et al., "Fluoroscopy Based Surgical Navigation-Concept and Clinical Applications," Computer Assisted Radiology and Surgery, 1997, pp. 956-960.
39Hounsfield, "Computerized transverse axial scanning (tomography): Part 1. Description of system," British Journal of Radiology, vol. 46, No. 552, Dec. 1973, pp. 1016-1022.
40Jacques et al., "A Computerized Microstereotactic Method to Approach, 3-Dimensionally Reconstruct, Remove and Adjuvantly Treat Small CNS Lesions," Applied Neurophysiology, vol. 43, 1980, pp. 176-182.
41Jacques et al., "Computerized three-dimensional stereotaxic removal of small central nervous system lesion in patients," J. Neurosurg., vol. 53, Dec. 1980, pp. 816-820.
42Joskowicz et al., "Computer-Aided Image-Guided Bone Fracture Surgery: Concept and Implementation," CAR '98, pp. 710-715.
43Kato et al., A Frameless, Armless Navagational System for Computer-Assisted Neurosurgery, J. Neurosurg 74, 1991, pp. 845-849.
44Kelly et al., "Precision Resection of Intra-Axial CNS Lesions by CT-Based Stereotactic Craniotomy and Computer Monitored CO2 Laser," Acta Neurochirurgica, vol. 68, 1983, pp. 1-9.
45Kelly, The NeuroStation System for Image-Guided, Frameless Stereotaxy, Neurosurgery, vol. 37, No. 2, Aug. 1995, pp. 348-350.
46Lavallee et al., "Computer Assisted Driving of a Needle into the Brain," Proceedings of the International Symposium CAR '89, Computer Assisted Radiology, 1989, pp. 416-420.
47Lavallee et al., "Computer Assisted Interventionist Imaging: The Instance of Stereotactic Brain Surgery," North-Holland MEDINFO 89, Part 1, 1989, pp. 613-617.
48Lavallee et al., "Computer Assisted Spine Surgery: A Technique For Accurate Transpedicular Screw Fixation Using CT Data and a 3-D Optical Localizer," TIMC, Faculte de Medecine de Grenoble.
49Lavallee et al., "Image guided operating robot: a clinical application in stereotactic neurosurgery," Proceedings of the 1992 IEEE Internation Conference on Robotics and Automation, May 1992, pp. 618-624.
50Lavallee et al., "Matching 3-D Smooth Surfaces with their 2-D Projections using 3-D Distance Maps," SPIE, vol. 1570, Geometric Methods in Computer Vision, 1991, pp. 322-336.
51Lavallee et al., "Matching of Medical Images for Computed and Robot Assisted Surgery," IEEE EMBS, Orlando, 1991.
52Lavallée et al., Computer Assisted Medical Interventions, NATO ASI Series, vol. F 60, 1990, pp. 301-312.
53Lavallee, "A New System for Computer Assisted Neurosurgery," IEEE Engineering in Medicine & Biology Society 11th Annual International Conference, 1989, pp. 0926-0927.
54Lavallee, "VI Adaption de la Methodologie a Quelques Applications Cliniques," Chapitre VI, pp. 133-148.
55Leksell et al., "Stereotaxis and Tomography-A Technical Note," ACTA Neurochirurgica, vol. 52, 1980, pp. 1-7.
56Lemieux et al., "A Patient-to-Computed-Tomography Image Registration Method Based on Digitally Reconstructed Radiographs," Med. Phys. 21 (11), Nov. 1994, pp. 1749-1760.
57Levin et al., "The Brain: Integrated Three-dimensional Display of MR and PET Images," Radiology, vol. 172, No. 3, Sep. 1989, pp. 783-789.
58Mallet et al., Post-Laminectomy Cervical-Thoracic Kyphosis in a Patient with Von Recklinghausen's Disease, Spinal Frontiers, vol. Three, Issue One, Apr. 1996, pp. 1-15.
59Mazier et al., "Computer-Assisted Interventionist Imaging: Application to the Vertebral Column Surgery," Annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 12, No. 1, 1990, pp. 0430-0431.
60Mazier et al., Chirurgie de la Colonne Vertebrale Assistee par Ordinateur: Appication au Vissage Pediculaire, Innov. Tech. Biol. Med., vol. 11, No. 5, 1990, pp. 559-566.
61Mazier et al., Computer Assisted Interventionist Imaging: Application to the Vetebral Column Surgery, Annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 12, No. 1, 1990, pp. 0430-0431.
62Merloz, et al., "Computer Assisted Spine Surgery", Clinical Assisted Spine Surgery, No. 337, pp. 86-96.
63Pelizzari et al., "Accurate Three-Dimensional Registration of CT, PET, and/or MR Images of the Brain," Journal of Computer Assisted Tomography, Jan./Feb. 1989, pp. 20-26.
64Pelizzari et al., "Interactive 3D Patient-Image Registration," Information Processing in Medical Imaging, 12th International Conference, IPMI '91, Jul. 7-12, 136-141 (A.C.F. Colchester et al. eds. 1991).
65Pelizzari et al., No. 528-"Three Dimensional Correlation of PET, CT and MRI Images," The Journal of Nuclear Medicine, vol. 28, No. 4, Apr. 1987, p. 682.
66Phillips et al., "Image Guided Orthopaedic Surgery Design and Analysis," Trans Inst. MC, vol. 17, No. 5, 1995, pp. 251-264.
67Potamianos et al., "Intra-Operative Imaging Guidance for Keyhole Surgery Methodology and Calibration," First International Symposium on Medical Robotics and Computer Assisted Surgery, Sep. 22-24, 1994, pp. 98-104.
68Reinhardt et al., "CT-Guided 'Real Time' Stereotaxy," ACTA Neurochirurgica, 1989.
69Reinhardt et al., Interactive Sonar-Operated Device for Stereotactic and Open Surgery, Proceedings of the Xth Meeting of the World Society for Stereotactic and Functional Neurosugery, Maebashi, Japan, Oct. 1989, pp. 393-397.
70Reinhardt, Neuronavigation: A Ten-Year Review, Neurosurgery, 1993, pp. 329-341.
71Roberts et al., "A frameless stereotaxic integration of computerized tomographic imaging and the operating microscope," J. Neurosurg., vol. 65, Oct. 1986, pp. 545-549.
72Rosenbaum et al., "Computerized Tomography Guided Stereotaxis: A New Approach," Applied Neurophysiology, vol. 43, No. 3-5, 1980, pp. 172-173.
73Sautot et al., Computer Assisted Spine Surgery: A first Step Toward Clinical Application in Orthopaedics, IEEE, 1992, pp. 1071-1072.
74Sautot, "Vissage Pediculaire Assiste Par Ordinateur," Sep. 20, 1994.
75Schueler et al., "Correction of Image Intensifier Distortion for Three-Dimensional X-Ray Angiography," SPIE Medical Imaging 1995, vol. 2432, pp. 272-279.
76Selvik et al., "A Roentgen Stereophotogrammetric System," Acta Radiologica Diagnosis, 1983, pp. 343-352.
77Shelden et al., "Development of a computerized microsteroetaxic method for localization and removal of minute CNS lesions under direct 3-D vision," J. Neurosurg., vol. 52, 1980, pp. 21-27.
78Smith et al., "Computer Methods for Improved Diagnostic Image Display Applied to Stereotactic Neurosurgery," Automedical, vol. 14, 1992, pp. 371-382.
79Smith et al., Computer Methods for Improved Diagnostic Image Display Applied to Stereotactic Neurosurgery, Automedica, 1992, vol. 14, pp. 371-382.
80Smith et al., Multimodality Image Analysis and Display Methods for Improved Tumor Localization in Stereotactic Neurosurgery, Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, vol. 13, 1991, p. 0210.
81Smith et al., The Neurostation(TM)-A Highly Accurate, Minimally Invasive Solution to Frameless Stereotactic Neurosurgery, Computerized Medical Imaging and Graphics, vol. 18, 1994, pp. 247-256.
82Vector Vision: The Power of Surgical Tracking, BrainLab, 1997.
83Viant et al., "A Computer Assisted Orthopaedic System for Distal Locking of Intramedullary Nails," Proc. of MediMEC '95, Bristol, 1995, pp. 86-91.
84Watanabe et al., "Three-Dimensional Digitizer (Neuronavigator): New Equipment for Computer Tomography-Guided Stereotaxic Surgery," Surgical Neurology, vol. 27, No. 6, Jun. 1987, pp. 543-547.
85Watanabe, "Neuronavigator," Igaku-no-Ayumi, vol. 137, No. 6, May 10, 1986, pp. 1-4.
86Weese et al., "An Approach to 2D/3D Registration of a Vertebra in 2D X-ray Fluoroscopies with 3D CT Images," pp. 119-128.
87Weinstein et al., Spinal Pedicle Fixation: Reliability and Validity of Roentgenogram-Based Assessment and Surgical Factors on Successful Screw Placement, Spine, vol. 13, No. 9, 1988, pp. 1012-1018.
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Classifications
U.S. Classification600/426
International ClassificationA61B19/00, A61B17/88, A61B5/05, A61B17/70
Cooperative ClassificationA61B2019/5255, A61B17/7032, A61B2019/5272, A61B19/201, A61B2019/5445, A61B2017/00477, A61B19/50, A61B19/5244, A61B2019/5483, A61B2019/5287, A61B17/7083
European ClassificationA61B17/70T4, A61B19/52H12
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