|Publication number||USRE43526 E1|
|Application number||US 12/052,465|
|Publication date||Jul 17, 2012|
|Priority date||Feb 12, 1997|
|Also published as||US5910141|
|Publication number||052465, 12052465, US RE43526 E1, US RE43526E1, US-E1-RE43526, USRE43526 E1, USRE43526E1|
|Inventors||Matthew M. Morrison, Eric A. Loveless, David L. Brumfield, B. Thomas Barker, Catalina J. Carroll, David Miller, Dominique Petit|
|Original Assignee||Warsaw Orthopedic, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (53), Non-Patent Citations (16), Referenced by (11), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is a reissue of U.S. Pat. No. 5,910,141, issued on Jun. 8, 1999, which is hereby incorporated by reference, as if fully set forth herein. U.S. Pat. No. 5,910,141 matured from U.S. application Ser. No. 08/798,092, filed Feb. 12, 1997.
1. Description of the Prior Art
The present invention relates generally to instruments used to manipulate orthopedic implants. More particularly, the present invention relates to the manipulation of hone anchoring elements positioned in the spine and longitudinal members interconnecting those elements. While the present invention is particularly useful in spinal surgery, it may find use in other areas of medicine as well.
In many applications, particularly those relating to spinal correction techniques, it is desirable to place a series of implants in a patient's spine prior to inserting a longitudinal member (a rod or a plate) along the spine to interconnect the previously placed implants. On occasion, implants may be vertically spaced from the rod or plate and require a mechanical mechanism to bring the rod or plate into contact with the implant. In the instance of a plate, often the implant is a double threaded bolt with a series of bone screw threads anchoring into the bone and a machine threaded post extending through an opening in the plate. A machine threaded nut slightly larger than the opening in the plate may then be threaded onto the threaded post and tightened to bring the implant closer to the plate. For rod systems, a similar arrangement can be utilized whereby the threaded post of the implant extends through a connector attached to the rod. In these systems a nut is used to draw the implant closer to the connector by progressively threading the nut onto the post of the bone bolt.
Alternatively, it is known to provide a rod introducer mechanism that forces the rod and an implant towards each other. In some cases, the threaded post of a bolt type bone anchor is not long enough to extend through a connector attached to the rod. In this situation a mechanism is used to grasp the bolt and pull it towards the connector until the threaded post extends through an opening in the connector. A threaded nut may then be used to complete the connection to the connector.
In other cases the implant, either a bone screw or spinal hook, includes an open channel to receive the rod. A plug or set screw can be used to close the channel and lock the rod to the implant. In certain surgical techniques a rod is anchored at both ends by at least one implant, resulting in the rod being suspended above a second implant. A mechanism is then required to urge the second implant and rod together to permit connection of the implant to the rod and more particularly to seat the rod within the open channel of the implant. One such instrument marketed by Sofamor Danek Group as part of the Compact CD™ system, is an introducer lever C-6903 which resembles a fork with a pair of offset tines. The tines of this device extend over the vertically spaced rod and under either side of an enlarged portion of the implant. Once in place, the fork handle is moved toward the rod thereby forcing the rod and implant together. One problem with this arrangement is that the fork tines must pass between the implant and the bone, which in many cases may be difficult and may result in damage to the bone. Moreover, the connection between the fork tines and the implant is not a secure engagement and may result in the rod introducer slipping during the procedure of forcing the rod into the implant.
Other types of rod introduction devices have overcome the problems associated with the simple fork device by first achieving a secure attachment to the implant with articulated forceps or the like. Various instruments for gripping and handling implants are commonly known. One such instrument has a pair of articulating branches defining a gripping nose opposite a pair of handles. While many varieties of these forceps exist to accomplish various functions during surgery, some are adapted specifically to securely hold an implant, and in particular, a spinal osteosynthesis implant. The gripping nose of one such configuration utilizes a pair of inwardly facing cylindrical projections disposed at the distal end of the gripping nose. The cylindrical projections are adapted to engage corresponding recesses on an implant, thereby providing a secure grip. Because of the small size of many spinal implants and the accompanying difficulty gaining a secure grip with only manual pressure, such forceps are often utilized in the manipulation and placement of the implants.
In addition to providing a nose for gripping implants, many forceps also provide a locking mechanism to hold the forceps in the gripping position once the implant is gripped. A common example is the provision of one half of a ratchet rack on one articulating branch aligned to engage a second half of the ratchet rack on the other articulating branch. Upon movement of the branches towards one another, the separate halves of the ratchet rack come into engagement thereby preventing separation of the articulating branches. As is common with such arrangements, the articulating branches have sufficient flexibility that they may be flexed with respect to one another, thereby disengaging the ratchet racks.
An alternative forcep locking mechanism is disclosed in U.S. Pat. No. 5,423,855 owned by the Sofamor SNC subsidiary of Sofamor Danek Group. This patent shows forceps having an implant gripping nose as previously discussed. In this configuration, the articulating branches are held in the closed position by a spring biased cap disposed on the end of the branches opposite the gripping nose.
In prior systems, once a secure engagement has been accomplished between the forceps and the implant, a separate apparatus is attached between the forceps and the rod. In one such mechanism marketed by Sofamor Danek Group as the TSRH™ mini-corkscrew, a threaded rod is threadedly coupled at one end to the forceps and engages the rod at the opposite end. Rotation of the threaded rod urges the rod and implant towards each other. In another mechanism marketed by Sofamor Danek Group as an articulated rod pusher C-6211 for use with the Compact CD™ system, forceps grip the implant and a pivoting two piece rod pusher lever is used to urge the rod and implant towards one another. In this device, a lower end of the first member of the rod pusher engages the rod and the upper end of the first member is pivotally attached to the second member of the rod pusher lever. The lower end of a second member engages the forceps while the upper end of the second member is rotated to force the rod and implant towards each other.
U.S. Patent 5,020,519 to Hayes et al. discloses a single mechanism which both grips the rod and has a threaded mechanism to accomplish vertical reduction of the rod into the implant. As this reference discloses, the mechanism must first be attached to the implant and then the rod threaded through the opening between the clamping jaws. This unnecessarily creates a complication for the surgeon, i.e. maintaining both the reduction mechanism and the hook in the desired position while attempting to thread the rod through various implants and the opening in the reduction apparatus. Moreover, once the rod has been reduced into the implant opening, the reduction apparatus interferes with visualizing the implant and rod connection, and with placement of a fastener to hold the rod in the implant.
In addition to the surgical condition where the rod is suspended above the implant, the rod may be laterally offset with respect to the implant. Moreover, in some applications the implant may have an implant opening for receiving the rod which opens to the side, thereby requiring the rod to be laterally introduced into the implant. In these instances, it is often desirable to have mechanical assistance in bringing the rod and implant together to permit securing the rod within the implant. One such device marketed by Synthes Spine as the Universal Spinal System Rod Introduction Pliers is utilized to urge a laterally offset rod into a side opening implant. The Rod Introduction Pliers are used in conjunction with a Hook or Screw Holder device threadedly engaging the implant. One branch of the pliers consists of a barrel while the opposing branch defines a rod engaging surface. In operation, this barrel is placed over the Hook or Screw Hold device and the opposing branch of the pliers engages the offset rod and upon actuation of the plier handles the rod is urged into the implant opening. While this system provides a means to reduce the lateral displacement of the rod, it does not permit the user to additionally reduce any vertical displacement between the rod and the implant. Rather, the barrel of the rod introduction pliers apparently slides freely up and down the hook holder.
In addition to having a need, in some surgical situations, to both laterally approximate the rod to the implant and to vertically reduce the rod into the implant, there is a need to deliver a fastening member to the implant while the rod is securely held in place by the rod reduction apparatus. In some systems, the components required to accomplish reduction are offset with respect to the implant, thereby providing access to the implant to facilitate placement of the fastener once the rod is inserted into the implant. Use of offset instruments to apply force to the rod and implant may impart rotational forces to the implant tending to displace the implant from the desired location. Moreover, in most applications the fastening elements must be relatively small to prevent unnecessary protrusion from the implant. While this is desirable after placement, the small size of the fastener makes handling these items difficult. The difficulty of handling the small fasteners is increased when it is required to place them in the implant that is partially obscured by the rod introduction device. One approach to solving this problem is taken by the Universal Spine System pliers discussed above. In operation, a fastening collar is preloaded over the barrel prior to placement over the hook holder. Once the rod has been inserted into the implant the collar may be advanced over the barrel and engaged with the implant.
One disadvantage to the systems discussed above, is that none of the systems provide both a mechanism for reducing vertical rod offset and lateral rod offset from the bone anchor in a single device. Moreover, many of the systems utilize articulating clamping tips actuated by articulating handles to hold the implants and require a separate apparatus attached to the hook or screw holder to perform manipulation of the rod. It will be appreciated that the various handles extending out of the patient interfere both with vision and work space in an already limited surgical field. Therefore, it is desirable to provide a compact implant holder adapted to perform both vertical and lateral reduction of a rod.
The present invention overcomes the problems associated with the prior art by providing a gripping mechanism and a rod introduction lever for both lateral and vertical approximation in a single convenient instrument.
One form of the present invention contemplates a multiple action insertion apparatus for engaging a longitudinal member and an implant, comprising an implant holder including a first clamping branch and a second clamping branch cooperable with the first clamping branch to hold to the implant, a reduction mechanism interconnected with the implant holder, the reduction mechanism having a distal end for engaging the longitudinal member, wherein the reduction mechanism urges the longitudinal member into vertical alignment with the implant, and a lateral approximator mechanism interconnected with the implant holder, the lateral approximator mechanism having a distal end disposed adjacent the first and second clamping branches, said distal end adapted to engage the longitudinal member, wherein said lateral approximator mechanism urges the longitudinal member into lateral alignment with the implant.
Still a further form of the present invention contemplates a multiple action insertion apparatus for engaging a longitudinal member and an implant, comprising a device for attaching to an implant having an opening for receiving a rod, a device for lateral approximation of a longitudinal member laterally offset from the implant rod opening, the device for lateral approximation interconnected with the device for attaching, and a device for vertical reduction of a longitudinal member vertically offset from the implant, the device for vertical reduction interconnected with the device for attaching, wherein the device for lateral approximation laterally aligns the longitudinal member over the implant and the device for vertical reduction vertically aligns the longitudinal member with the implant.
Another form of the invention contemplates an implant holder for holding an implant adapted to receive a fastener, comprising a device for gripping the implant, the device for gripping including a gripping end and a handle defining a longitudinal cannula having a distal end adjacent the gripping end, the cannula adapted to receive a fastener cooperable with the implant.
In another aspect, the present invention contemplates an implant holder for gripping an implant, comprising a shaft having a gripping end with a portion, the gripping end defining a first clamping branch and a cooperable second clamping branch, the first and second clamping branches tending to assume an insertion position defining a first distance between the first and second clamping branches, and the first and second clamping branches compressible into a clamping position defining a second distance between the first and second clamping branches, the first distance greater than the second distance, and a sleeve defining an interior channel, the shaft slidably received within the interior channel, the shaft moveable between a first position with the portion extending from the sleeve and a second position with the portion drawn into the sleeve, wherein movement of the shaft within the tubular sleeve from the first position to the second position controls the first and second clamping branches from the insertion position to the clamping position.
Another form of the present invention contemplates an implant holder having a rod reduction mechanism for vertically aligning a longitudinal member and an implant, comprising a device for gripping the implant, a sleeve having an axis and a distal end adapted to engage the longitudinal member, the sleeve having an axial bore sized to receive the device for gripping, the device for gripping slidably received within the axial bore, and a device for axially displacing the sleeve with respect to the device for gripping, whereby the vertical offset longitudinal member is urged into alignment with the implant.
Additionally, the invention includes a method for for interconnecting a longitudinal member and an implant adapted to engage the longitudinal member, comprising the steps of providing an introduction apparatus having an attachment mechanism with a cannula and a vertical reduction mechanism, attaching the introduction apparatus to the implant, operating the vertical reduction mechanism to force the longitudinal member into alignment with the implant, inserting a fastener through the cannula, interconnecting the fastener and the implant, wherein the longitudinal member is securely attached to the implant, and removing the introduction apparatus.
The invention includes an additional method for interconnecting a longitudinal member and an implant adapted to engage the longitudinal member, comprising the steps of providing an introduction apparatus having an attachment mechanism, a lateral approximation lever, and a vertical reduction mechanism, attaching the introduction apparatus to the implant, engaging a laterally offset longitudinal member with one end of the lateral approximator lever, rotating the lever to urge the longitudinal member into lateral alignment with the implant, operating the vertical reduction mechanism to force the longitudinal member into vertical alignment with the implant, and interconnecting the longitudinal member and the implant.
One object of the present invention is to provide an implant holder having a cannula for passage of a fastener to the implant while it is being securely held.
Another object of the present invention is to provide a simple device for gripping the implant and reducing vertical offset between an implant and a longitudinal member.
A further object of the present invention is to provide an implant holder operable in a small lateral area to clamp an implant by axial movement of the holder mechanism.
Still a further object of the present invention is to provide a multiple action insertion apparatus that is capable of gripping an implant, approximating the implant and an laterally offset longitudinal member, and reducing the vertical distance between the implant and the longitudinal member.
Another object of the present invention is to provide a multiple action insertion apparatus that is capable of gripping an implant, approximating the implant and an laterally offset longitudinal member, and reducing the vertical distance between the implant and the longitudinal member wherein the apparatus includes a cannula for insertion of a fastening member.
Related objects and advantages of the present invention will be apparent from the following description.
For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
Referring now to
Referring now to
Referring now to
Each clamping branch includes a series of projections 42a and 42b to engage corresponding recesses 44a and 44b on implant 26. While
Disposed on the opposite end of clamp shaft 18 is T-handle 20. Adjacent T-handle 20 and spaced by a smooth cylindrical shank portion 35, are external threads 26 adapted to engage an internally threaded nut. Additionally, disposed between the treads 26 and the gripping nose 22 is a shoulder 86 where clamping shaft 18 transitions from a cylindrical cross section adjacent threads 26 to a substantially rectangular cross section extending to gripping nose 22.
Referring now to
Referring now to
Speed nut 16 of the present invention is of conventional design (
Preferably, the rod insertion apparatus of the present invention includes a lateral approximator mechanism to bring an implant into alignment with a laterally offset longitudinal member. In the preferred embodiment, the lateral approximator mechanism is a lateral approximator lever 12 pivotally attached to outer sleeve 14 (
The rod engaging end 30 of lever 12 is bifurcated into a first lever arm 29 and a second lever arm 33. Each arm freely passes over the outer surface of outer sleeve 14. First lever arm 29 has a rod engaging hook 32 disposed at its distal end. Likewise, second lever arm 33 has a corresponding rod engaging hook 34 disposed at its distal end and in alignment with engaging hook 32 permitting both hooks to contact a rod simultaneously. It is contemplated that the extent of lever arm extending distally beyond hooks 32 and 34 should be minimized in order to limit contact with surrounding anatomical structures during the lateral approximation procedure and the vertical reduction procedure if performed.
The above-described components of the rod introduction apparatus of the present invention are assembled as follows. Clamp shaft 18 as shown in
In the preferred embodiment, T-handle 20 having a central opening aligned with cannula 84 is added for ease of manipulation of clamp shaft 18 within outer sleeve 14. In the preferred embodiment, T-handle 20 is welded onto clamp shaft 18, although it is contemplated that other means such as brazing or threading may be used to attach T-handle 20. It is contemplated that a separate handle is not required, instead, the surface of clamp shaft 18 may be roughened for easy gripping by the surgeon or the shaft may be machined to define an enlarged area for gripping. Finally, at the option of the user, lateral rod approximator lever slides about the outer surface of outer sleeve 14 to pass key way 13 and corresponding key way 15 on the opposite side of lever 12 over pivot pins 24 and 25, respectively. In the preferred embodiment, lateral approximator lever 12 can be selectively interconnected with the outer sleeve, thus permitting the lever to be added or removed at the user's discretion.
As shown in
Referring now to
Once the implant has been securely gripped, the spinal rod 50 may then be aligned with the opening in the implant, both laterally and vertically. For lateral approximation, lateral rod approximator lever 12 is positioned as previously described about the outer sleeve 14 and pivotally connected with pivot pins 24 and 25. As shown in
Once the rod has been secured to the implant, rod adjustability lever 12 is rotated away from engagement with outer sleeve 14, thereby releasing the rod 50. Further, speed nut 16 is rotated to urge gripping nose 22 out of outer sleeve 14 and thereby separate rod engagement end 40 from rod 50. Speed nut 16 is continued to be rotated until it no longer engages threads 28, which thereby allows clamp shaft 18 to slide within outer sleeve until handle 20 engages speed nut 16. This movement permits clamping branches 36 and 38 to assume the insertion position and thereby release the implant. Once released, the rod introduction apparatus of the present invention may then be withdrawn.
Referring now to
In this embodiment, clamping shaft 118 comprises two articulating branches 142 and 143 pivoting about a connecting pivot pin 144 (
Outer sleeve 110 includes mounting brackets 113 and 144. An opening (not shown) is formed in the sidewall of outer sleeve 110 between mounting brackets 113 and 114. Pinion 116 is pivotally mounted to mounting brackets 113 and 144 with a portion of the pinion extending through the opening and into the interior channel of outer sleeve 110.
Lateral rod approximation lever 112 is pivotally mounted to outer sleeve 110 by pivot pins 124 and 125. The rod engaging end 120 of lever 112 includes a pair of hooks 121 and 122 for engaging a rod. As shown in
In operation, articulating branches 142 and 143 are separated to position clamping branches 136 and 138 in the insertion position. The clamping branches are positioned adjacent screw 126 with projections 145 and 146 aligned with corresponding recesses (not shown) in screw 126. Articulating branches are then brought together, thereby urging projections into the screw recesses to securely hold the implant. Retaining cap 140 is then rotated about pin 141 until the cap securely engages articulating branch 142. In this manner, the branches remain in the clamping position.
After the implant has been securely clamped, outer sleeve 110 with interconnected lever 112 and pinion 116 is slid over clamping shaft 118 with pinion 116 aligned with rack 117 and is urged downwardly until pinion 116 engages rack 117. Lever 112 is then positioned to engage rod 150. Lever 112 is moved to bring rod 150 into lateral alignment with screw 126. Pinion 116 is then rotated to urge outer sleeve 110 towards screw 126 thereby urging engaged rod 150 into vertical alignment with screw 126. In the illustrated embodiment, screw 126 is a variable angle screw engagable by an eyebolt mechanism previously place on rod 150. Such an eyebolt attachment mechanism is offered by Sofamor Danek Group as the TSRH™ Variable Angle Eyebolt. Once in alignment, the eyebolt mechanism is utilized to securely interconnect the screw and rod.
Once screw and rod are interconnected, pinion 116 must be reversed to move outer sleeve 110 away from screw 126. Once pinion 116 is free of rack 117, outer sleeve 110 may be removed. Retaining cap 140 is then removed from articulating branch 142, thereby permitting the branches to disengage screw 126.
While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiments have been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3604487||Mar 10, 1969||Sep 14, 1971||Richard S Gilbert||Orthopedic screw driving means|
|US3844291||Apr 26, 1973||Oct 29, 1974||Moen G||Grip device|
|US4411259||Nov 24, 1981||Oct 25, 1983||Drummond Denis S||Apparatus for engaging a hook assembly to a spinal column|
|US5020519 *||Dec 7, 1990||Jun 4, 1991||Zimmer, Inc.||Sagittal approximator|
|US5113685 *||Jan 28, 1991||May 19, 1992||Acromed Corporation||Apparatus for contouring spine plates and/or rods|
|US5209755||Jun 5, 1992||May 11, 1993||Stella Abrahan||Dermal exciser|
|US5308357||Aug 21, 1992||May 3, 1994||Microsurge, Inc.||Handle mechanism for manual instruments|
|US5314431 *||Jun 19, 1992||May 24, 1994||Graziano Thomas A||Surgical instrument used in conjunction with fixation of fractures or surgical osteotomies|
|US5330472||Jun 13, 1991||Jul 19, 1994||Howmedica Gmbh||Device for applying a tensional force between vertebrae of the human vertebral column|
|US5364397||Jun 1, 1993||Nov 15, 1994||Zimmer, Inc.||Spinal coupler seater with dual jaws and an independent plunger|
|US5389099 *||Jul 28, 1993||Feb 14, 1995||Hartmeister; Ruben||Keyhole rod bender|
|US5392978||Oct 15, 1993||Feb 28, 1995||United States Surgical Corporation||Surgical staple and endoscopic stapler|
|US5423855 *||Feb 15, 1994||Jun 13, 1995||Sofamor, S.N.C.||Capped locking clamp for manipulation of surgical implants|
|US5449361||Apr 21, 1993||Sep 12, 1995||Amei Technologies Inc.||Orthopedic cable tensioner|
|US5458608||Jun 3, 1993||Oct 17, 1995||Surgin Surgical Instrumentation Inc.||Laparoscopic instruments and methods|
|US5466243||Feb 17, 1994||Nov 14, 1995||Arthrex, Inc.||Method and apparatus for installing a suture anchor through a hollow cannulated grasper|
|US5588580||May 23, 1996||Dec 31, 1996||Ethicon Endo-Surgery, Inc.||Surgical instrument|
|US5616143||Feb 6, 1995||Apr 1, 1997||Schlapfer; Johannes F.||Surgical forceps|
|US5720751 *||Nov 27, 1996||Feb 24, 1998||Jackson; Roger P.||Tools for use in seating spinal rods in open ended implants|
|US5782830||Jul 10, 1996||Jul 21, 1998||Sdgi Holdings, Inc.||Implant insertion device|
|US5782831||Nov 6, 1996||Jul 21, 1998||Sdgi Holdings, Inc.||Method an device for spinal deformity reduction using a cable and a cable tensioning system|
|US5810878||Feb 12, 1997||Sep 22, 1998||Sdgi Holdings, Inc.||Rod introducer forceps|
|US5855311||Jun 7, 1995||Jan 5, 1999||Ethicon Endo-Surgery||Reloadable surgical instrument|
|US5899901||Nov 1, 1995||May 4, 1999||Middleton; Jeffrey Keith||Spinal fixation system|
|US5944720||Mar 25, 1998||Aug 31, 1999||Lipton; Glenn E||Posterior spinal fixation system|
|US6036692||Jul 7, 1998||Mar 14, 2000||Sdgi Holdings, Inc.||Rod introducer forceps|
|US6042582||May 20, 1998||Mar 28, 2000||Ray; Charles D.||Instrumentation and method for facilitating insertion of spinal implant|
|US6063088||Mar 24, 1997||May 16, 2000||United States Surgical Corporation||Method and instrumentation for implant insertion|
|US6261296||Oct 1, 1999||Jul 17, 2001||Synthes U.S.A.||Spinal disc space distractor|
|US6440133||Jul 3, 2001||Aug 27, 2002||Sdgi Holdings, Inc.||Rod reducer instruments and methods|
|US6790209||Jul 1, 2002||Sep 14, 2004||Sdgi Holdings, Inc.||Rod reducer instruments and methods|
|US6830570||Oct 23, 2000||Dec 14, 2004||Sdgi Holdings, Inc.||Devices and techniques for a posterior lateral disc space approach|
|US7156849||Jun 16, 2003||Jan 2, 2007||Depuy Spine, Inc.||Rod reduction nut and driver tool|
|US7470279||Feb 27, 2004||Dec 30, 2008||Jackson Roger P||Orthopedic implant rod reduction tool set and method|
|US7611517||Feb 27, 2004||Nov 3, 2009||Warsaw Orthopedic, Inc.||Rod reducer|
|US7625376||Dec 1, 2009||Warsaw Orthopedic, Inc.||Reducing instrument for spinal surgery|
|US20040267275||Jun 26, 2003||Dec 30, 2004||Cournoyer John R.||Spinal implant holder and rod reduction systems and methods|
|US20050192570||Feb 27, 2004||Sep 1, 2005||Jackson Roger P.||Orthopedic implant rod reduction tool set and method|
|US20050192579||Feb 27, 2004||Sep 1, 2005||Jackson Roger P.||Orthopedic implant rod reduction tool set and method|
|US20050228400||Mar 31, 2004||Oct 13, 2005||Chao Nam T||Instrument for inserting, adjusting and removing pedicle screws and other orthopedic implants|
|US20060036244||Nov 16, 2004||Feb 16, 2006||Innovative Spinal Technologies||Implant assembly and method for use in an internal structure stabilization system|
|US20060074418||Sep 24, 2004||Apr 6, 2006||Jackson Roger P||Spinal fixation tool set and method for rod reduction and fastener insertion|
|US20060111712||Nov 23, 2004||May 25, 2006||Jackson Roger P||Spinal fixation tool set and method|
|US20060173454||Nov 16, 2004||Aug 3, 2006||Innovative Spinal Technologies||Internal structure stabilization system for spanning three or more structures|
|US20070270867||Apr 11, 2006||Nov 22, 2007||Sdgi Holdings, Inc.||Multi-directional rod reducer instrument and method|
|US20070270868||Apr 24, 2006||Nov 22, 2007||Sdgi Holdings, Inc.||Cam based reduction instrument|
|US20070276379||Feb 2, 2007||Nov 29, 2007||Miller Keith E||Reducing instrument for spinal surgery|
|US20080077139||Jul 18, 2007||Mar 27, 2008||Landry Michael E||Spinal stabilization systems with quick-connect sleeve assemblies for use in surgical procedures|
|US20080091213||Dec 6, 2007||Apr 17, 2008||Jackson Roger P||Tool system for dynamic spinal implants|
|US20080234678||Mar 19, 2008||Sep 25, 2008||Robert Gutierrez||Rod reducer|
|US20080234765||Mar 13, 2007||Sep 25, 2008||Depuy Spine, Inc.||Rod reduction methods and devices|
|DE4238339A1||Nov 13, 1992||May 19, 1994||Peter Brehm||Fastening screw for spinal column support rod - has hollow slotted head with female thread to accommodate grub-screw to firmly clamp rod in place|
|SU995769A1 *||Title not available|
|1||*||Compact CD Low Back Surgeon's Documentation, Sofamor Spine Division, pp. 60-61, 78-79. Date unknown.|
|2||*||Cortel-Dubousset Instrumentation (1 page). Date unknown.|
|3||Laufer and Bowe, CD Horizon Spinal System, Surgical Technique, 1996, Sofamor Danek.|
|4||Moss® Miami 3-Dimensional Instrumentation Product Catalogue, 1995, Depuy Motech, Inc.|
|5||Orthopedic Sourcebook, Instruments for Surgeons, Section K, 1999, Medic.|
|6||Pages 50-51, Chapeter 2,The TSRH Minicorkscrew.|
|7||Pediatric Isola® Spinal System, Ordering Information for Implants and Instruments, 1998, AcroMed Corporation.|
|8||Shufflebarger et al., Taking Spinal Instrumentation to a New Dimension, 1995.|
|9||Sofamor Rod Reducer (1994).|
|10||Sofamor, "Introducteur-Contreur De Tige" (schematic drawings), Jan. 1, 1994.|
|11||Sofamor, "Introducteur—Contreur De Tige" (schematic drawings), Jan. 1, 1994.|
|12||*||The RSRH Minicordscrew, pp. 50-51, ch. 2. Date unknown.|
|13||TSRH-3D Vertebral Body Reduction Instrumentation, 2001, Medtronic Sofamor Danek.|
|14||Universal Spinal System Rod Introduction Pliers by Synthes Spine (13 Pages).|
|15||*||Universal Spinal System Rod Introduction Pliers by Synthes Spine (13 pages). Date unknown.|
|16||Z Spinal Instrumentation, Section D, 1987, Zimmer, Inc.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8512383||Jun 18, 2010||Aug 20, 2013||Spine Wave, Inc.||Method of percutaneously fixing a connecting rod to a spine|
|US8591515 *||Aug 26, 2009||Nov 26, 2013||Roger P. Jackson||Spinal fixation tool set and method|
|US8845640 *||Jun 18, 2010||Sep 30, 2014||Spine Wave, Inc.||Pedicle screw extension for use in percutaneous spinal fixation|
|US8900275||Nov 9, 2012||Dec 2, 2014||Warsaw Orthopedic, Inc.||Instruments and methods for stabilization of bony structures|
|US9161788 *||Dec 8, 2009||Oct 20, 2015||DePuy Synthes Products, Inc.||Rod reducer apparatus for spinal corrective surgery|
|US9433446 *||Sep 23, 2014||Sep 6, 2016||Spine Wave, Inc.||Pedicle screw extension for use in percutaneous spinal fixation|
|US20090318972 *||Dec 24, 2009||Jackson Roger P||Spinal fixation tool set and method|
|US20110313470 *||Dec 22, 2011||Spine Wave, Inc.||Pedicle Screw Extension for Use in Percutaneous Spinal Fixation|
|US20120271365 *||Dec 8, 2009||Oct 25, 2012||Synthese USA, LLC||Rod reducer apparatus for spinal corrective surgery|
|US20140058464 *||Aug 23, 2012||Feb 27, 2014||Synthes Usa, Llc||Bi-planar persuader|
|US20150012049 *||Sep 23, 2014||Jan 8, 2015||Spine Wave, Inc.||Pedicle screw extension for use in percutaneous spinal fixation|
|International Classification||A61B17/88, A61B17/56|
|Cooperative Classification||A61B17/7091, A61B17/7088|
|European Classification||A61B17/70T10, A61B17/70T4E2|