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Publication numberUS3915162 A
Publication typeGrant
Publication dateOct 28, 1975
Filing dateFeb 13, 1974
Priority dateFeb 13, 1974
Publication numberUS 3915162 A, US 3915162A, US-A-3915162, US3915162 A, US3915162A
InventorsPeter S Miller
Original AssigneePeter S Miller
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Orthopedic pin identification means
US 3915162 A
Abstract
Surgical pins for connecting osseous tissue wherein the pins are readily separable and identifiable under Xray conditions by reason of the inclusion on the shank of the pin in addition to all of the operating elements of the pin of additional three dimensional markings such as screw threads with different such markings for each of the pins which may be used at a particular location so that the pins may be readily identified and segregated.
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Description  (OCR text may contain errors)

' United States Patent Miller [4 Oct. 28, 1975 [5 ORTHOPEDIC PIN IDENTIFICATION 3,524,378 8/1970 Wieber 85/47 MEANS 3,682,507 8/1972 Waud 85/41 Primary Examiner-Richard A. Gaudet Assistant ExaminerJ. Yasko Attorney, Agent, or Firm-Ostrolenk, Faber, Gerb &

Soffen [57] ABSTRACT Surgical pins for connecting osseous tissue wherein the pins are readily separable and identifiable under Xray conditions by reason of the inclusion on the shank of the pin in addition to all of the operating elements of the pin of additional three dimensional markings such as screw threads with different such markings for each of the pins which may be used at a particular location so that the pins may be readily identified and segregated.

4 Claims, 5 Drawing Figures US. Patent 0a. 28, 1975 3,915,162

.55. E. .IE'E: 4.

ORTHOPEDIC PIN IDENTIFICATION MEANS The present invention relates to orthopedic pins used for the purpose of securing and immobilizing fractured bone elements with respect to each other, interconnecting separate ossification centers or otherwise inter-. engaging bone tissue either temporarily or permanently while the bone sets, mends or heals in the integrated position created by the utilization of the pins.

One of the major problems which arises in connection with the utilization of such pins is one of identification. Where two or more pins are used in the operation of interconnecting bone elements then, in order to identify the particular pin by means of an Xray it may be necessary in the simplest circumstances to take two or more Xray exposures but in the more usual circumstances it may be necessary to advance one or more of the pins in order to identify it by its change in location. This unnecessarily increases the time that a patient must spend in the operating room and under anesthetic and increases the difficulty of the surgeon and orthopedist who perform this operation. It thus becomes extremely desirable to reduce the amount of time involved in any such procedure.

The present invention contemplates that the pins themselves carry identification which may be distinguishable by Xray and/or radiograph and for this purpose the invention contemplates the utilization of an extra thread, two threads or three threads or as many more additional threads as are needed on the body of the pin so that each pin may be distinguished from the other.

While the number of threads actually used will be obvious to the surgeon who is operating at the time it also becomes desirable to place an identification number corresponding to the number of threads on another and highly visible portion of the pin. While this identification will not be visible under Xray the additional threads will be visible and thus will serve as a simplified identification means so that the location of each pin may readily be determined by Xray and the pins may readily be distinguished from each other under Xray conditions without the need for taking a plurality of Xray exposures at different angular positions in order to attempt to locate the pins and to determine which pin may require some particular action and without the necessity for further operation or for extension of the time of surgical operation to the detriment of the patient as well as the personnel participating in the operation.

Thus the primary object of the present invention is the provision of simplified means for identification of orthopedic pins by the utilization of Xrays without the need for a plurality of Xray radiographs and without the need for movement of the pins themselves changing their relative location in order to be able to identify a particular pin.

A further object of the present invention is the utilization of such identification means which may be visi. ble in an Xray radiograph such as, as herein more specifically disclosed, the utilization of extra threads or extra extensions or three-dimensional markings on the pin itself so that it may readily be identified.

The foregoing and many other objects of the present invention will become apparent in the following description and drawings in which:

FIG. 1 is a side view of one of the pins of the present invention.

FIG. 2 is a side view of another pin of a set of which FIG. 1 is a part having an identification marking thereon in the form of a single 360 turn of a screw thread.

FIG. 3 is a view corresponding to that of FIGS. 1 and 2 showing a third pin of the set having an identification marking thereon in the form of two screw threads.

FIG. 4 is a view corresponding to FIGS. 1, 2 and 3 but completing the set, which includes the said other members, and having an identification marking thereon in the form of three screw threads.

FIG. 5 is a view of a pin of the type previously used corresponding essentially to that of FIG. I having an extension which facilitates handling thereof and which extension may be snapped off by an appropriate implement. I

' Referring now to the Figures it will be seen that each of the pins 10, 11, 12, 13, 14 of FIGS. l-5 is provided with a principal shank 20, a screw thread 21 and a relatively pointed end 22 which will permit the pin to make its entry under appropriate force exerted by the surgeon.

Each of the pins is provided at the end of the shank opposite the screw thread 21 with a hex nut formation 25 integral or integrated with the shank 20 so that an appropriate tool may be utilized thereon in order to drive the point 22 and the screw thread 21 of each pin through the bone tissue into the proper position. Each of the pins may, if desired, have additional extensions 30 as shown in FIG. 5 which may facilitate handling of the pins and may facilitate positioning of them while an operation is taking place and which may be clipped off at the hex nut 25 at the appropriate time.

The identification means provided for the pin is the utilization of the single screw thread 35 shown on the pin 11 of FIG. 2, the double screw thread 36 on pin 12 of FIG. 3 and the triple screw thread 37 on pin 13 of FIG. 4. These screw threads are remote from the operative portion of the pin which first enters and is driven into the bone, to wit the pointed end 22 of screw thread 21; but each of the additional screw threads 35, 36, 37 of FIGS. 2, 3 and 4, because they are three dimensional and therefore highly visible and will cast an appropriate shadow in an Xray radiograph, .will serve readily to identify each of the pins.

Where actual screw threads are used as shown in FIGS. 2, 3 and 4 the pitch thereof will be the same as the operative screw threads 21 so that there will be no problem with respect to operation if any of the pins is driven deep into the osseous tissue.

In those cases where it is not expected that the pins will be driven deep into the osseous tissue it is possible instead of using screw threads 35, 3.6, 37 to use concentric rings. It is preferred however that the screw threads 35, 36, 37 be used for such identification purposes. Where it is possible that identification may be impeded by the fact that one screw thread, two screw threads and three screw threads are used for separate pins, then various different arrangements of screw threads may be used such as one or two additional screw threads on the shank of the pin for the second pin to be identified; four such screw threads on the shank of the third pin and six such screw threads on the shank of the fourth pin and so on. This will obviate any possible ambiguity that might arise from the fact that a single screw thread may in one particular aspect convey the impression on one side of the shank as being composed of two turns rather than one. This variation is however merely to enhance the facility and exactness of identification.

By this means therefore any extension of time of an operation which may be needed to identify the separate pins is obviated and any further operation which may be required to move one or more pins in order to identify a particular pin is also obviated; it will also become unnecessary to take a plurality of Xray radiographs from different aspects in order to determine the exact location and function of each pin.

In the foregoing the present invention has been described solely in connection with illustrative preferred embodiments thereof. Since many variations and modifications of the present invention will become apparent to those skilled in the art it is preferred that the scope of this disclosure be determined not by the specific illustrative embodiments herein contained but only by the appended claims.

The embodiments of the invention in which an exclusive privilege of property is claimed are defined as follows:

l. A method of detecting any incorrectly placed orthopedic pin in a set of orthopedic pins inserted in osseous tissue, which comprises providing a set of orthopedic pins wherein each said pin has a threaded end, a

shank. and a head for receiving a turning tool and wherein the shanks of said pins are provided with a pin identification member spaced from the threaded end of the respective pin, said members being visibly different so as to be individually identifiable in an X-ray radiograph; inserting said pins in osseous tissue; providing an X-ray radiograph of said tissue with the pins inserted; and examining said radiograph to compare pin locations by means of said differing members to detect an incorrectly located pin.

2. A method as set forth in claim 1, wherein said identification members are integral with the material of said pin shanks and encompass the respective shanks.

3. A method as set forth in claim 1, wherein said identification members are comprised of an increasing number of screw threads from pin to pin and said threads being capable of screwing into osseous tissue and matching the pitch of the threaded ends of respective pins.

4. A method as set forth in claim 1, including in said set a pin having a shank without an identification member so as to be thus distinguishable by X-ray radiograph from the other pins of said set.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1444618 *Jun 7, 1921Feb 6, 1923Levingston Vernon LDriven-headed fastening
US2490364 *Feb 27, 1948Dec 6, 1949Herman H LivingstonBone pin
US2536964 *May 26, 1949Jan 2, 1951Guidoscope CorpSurgical or fracture nail
US3051169 *Dec 5, 1958Aug 28, 1962Stille Werner AbSurgical screw connector
US3157942 *Feb 1, 1960Nov 24, 1964Mac Lean Fogg Lock Nut CoMethod of applying securing means
US3524378 *Dec 5, 1968Aug 18, 1970Illinois Tool WorksStitching screw
US3682507 *Jun 2, 1970Aug 8, 1972Illinois Tool WorksThreaded fastener with stabilizing threads
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4005527 *Dec 22, 1975Feb 1, 1977Wilson Ralph SDepth gauge
US4463753 *Sep 11, 1981Aug 7, 1984Gustilo Ramon BCompression bone screw
US4653486 *Apr 12, 1984Mar 31, 1987Coker Tom PFastener, particularly suited for orthopedic use
US4858603 *Jun 6, 1988Aug 22, 1989Johnson & Johnson Orthopaedics, Inc.Bone pin
US4863470 *Sep 24, 1987Sep 5, 1989Medical Engineering CorporationIdentification marker for a breast prosthesis
US4869242 *Jul 29, 1988Sep 26, 1989Galluzzo Mose ABone fixation pin and method of using the same
US4944742 *Jun 5, 1989Jul 31, 1990Johnson & Johnson Orthopaedics, Inc.Bone pin
US4964320 *Sep 1, 1989Oct 23, 1990Engineering & Precision Machining, Inc.For orthopedic uses
US5041120 *Jan 19, 1990Aug 20, 1991Origin Medsystems, Inc.Multipart kit and method of using the same to remove cement used to secure prosthetic joints
US5156606 *Mar 1, 1990Oct 20, 1992Zimmer, Inc.Method and apparatus for removing pre-placed prosthetic joints and preparing for their replacement
US5180382 *Dec 17, 1991Jan 19, 1993Synthes (U.S.A.)Bone screw
US5190551 *Dec 14, 1990Mar 2, 1993Zimmer, Inc.Controlled apparatus and method for extracting cement mantles from bone recesses
US5196015 *Apr 30, 1992Mar 23, 1993Neubardt Seth LProcedure for spinal pedicle screw insertion
US5222957 *Apr 10, 1992Jun 29, 1993Zimmer, Inc.Method and apparatus for extracting a cement mantle from a bone recess
US5456267 *Mar 18, 1994Oct 10, 1995Stark; John G.Bone marrow harvesting systems and methods and bone biopsy systems and methods
US5474558 *Jul 18, 1994Dec 12, 1995Neubardt; Seth L.Surgical tool system
US5522817 *Feb 24, 1994Jun 4, 1996United States Surgical CorporationAbsorbable surgical fastener with bone penetrating elements
US5902310 *Feb 21, 1997May 11, 1999Ethicon Endo-Surgery, Inc.Apparatus and method for marking tissue
US5964768 *Mar 3, 1998Oct 12, 1999Acumed, Inc.Tapered bone screw with continuously varying pitch
US6030162 *Dec 18, 1998Feb 29, 2000Acumed, Inc.Axial tension screw
US6042584 *Dec 4, 1998Mar 28, 2000Pierson, Iii; Raymond H.Bone depth resection guide and method
US6200323Jun 17, 1999Mar 13, 2001Pierson, Iii Raymond H.Bone depth resection guide and method
US6299615Aug 16, 1999Oct 9, 2001Acumed, Inc.System for fusing joints
US6468277Apr 4, 2000Oct 22, 2002Ethicon, Inc.Orthopedic screw and method
US6527777Mar 13, 2001Mar 4, 2003Ethicon, Inc.Device for repairing a soft-tissue tear and method
US6699251Apr 3, 2000Mar 2, 2004Orthofix S.R.L.Bone screw for external fixators
US6875215Feb 15, 2002Apr 5, 2005John Stanley TarasDistraction pin for fracture fixation
US6949100Apr 3, 2000Sep 27, 2005Orthofix S.R.L.Bone screw for use in orthopaedic surgery
US6984235Jun 3, 2002Jan 10, 2006Acumed LlcSystem for fusing joints
US6989014Jul 25, 2002Jan 24, 2006Ethicon, Inc.Orthopedic screw and method
US7235079Nov 18, 2004Jun 26, 2007Acumed LlcComposite bone fasteners
US7578836Jan 24, 2006Aug 25, 2009Depuy MitekOrthopedic screw and method
US7785302Mar 6, 2006Aug 31, 2010C. R. Bard, Inc.Access port identification systems and methods
US7947022Apr 7, 2009May 24, 2011C. R. Bard, Inc.Access port identification systems and methods
US7959615Jan 31, 2008Jun 14, 2011C. R. Bard, Inc.Access port identification systems and methods
US8021324Jul 17, 2008Sep 20, 2011Medical Components, Inc.Venous access port assembly with X-ray discernable indicia
US8025639Apr 7, 2009Sep 27, 2011C. R. Bard, Inc.Methods of power injecting a fluid through an access port
US8029482Jun 8, 2010Oct 4, 2011C. R. Bard, Inc.Systems and methods for radiographically identifying an access port
US8070786Jan 9, 2006Dec 6, 2011Acumed LlcSystem for fusing joints
US8080058 *May 12, 2003Dec 20, 2011Depuy Mitek, Inc.Method and apparatus for fixing a graft in a bone tunnel
US8177762Dec 28, 2005May 15, 2012C. R. Bard, Inc.Septum including at least one identifiable feature, access ports including same, and related methods
US8202259Oct 30, 2009Jun 19, 2012C. R. Bard, Inc.Systems and methods for identifying an access port
US8257325Jun 20, 2008Sep 4, 2012Medical Components, Inc.Venous access port with molded and/or radiopaque indicia
US8382723Jun 13, 2011Feb 26, 2013C. R. Bard, Inc.Access port identification systems and methods
US8382724Sep 30, 2011Feb 26, 2013C. R. Bard, Inc.Systems and methods for radiographically identifying an access port
US8475417Apr 7, 2009Jul 2, 2013C. R. Bard, Inc.Assemblies for identifying a power injectable access port
US8545460Apr 25, 2006Oct 1, 2013C. R. Bard, Inc.Infusion apparatuses and related methods
US8585663Mar 29, 2013Nov 19, 2013C. R. Bard, Inc.Access port identification systems and methods
US8603052Feb 25, 2013Dec 10, 2013C. R. Bard, Inc.Access port identification systems and methods
US8608713May 14, 2012Dec 17, 2013C. R. Bard, Inc.Septum feature for identification of an access port
US8641676Apr 3, 2012Feb 4, 2014C. R. Bard, Inc.Infusion apparatuses and methods of use
US8641688May 2, 2013Feb 4, 2014C. R. Bard, Inc.Assemblies for identifying a power injectable access port
US8715244Jul 7, 2010May 6, 2014C. R. Bard, Inc.Extensible internal bolster for a medical device
US8805478Apr 7, 2009Aug 12, 2014C. R. Bard, Inc.Methods of performing a power injection procedure including identifying features of a subcutaneously implanted access port for delivery of contrast media
US20110311337 *May 23, 2011Dec 22, 2011C.R. Bard, Inc.Access port identification systems and methods
EP0011258A1 *Nov 9, 1979May 28, 1980ORTHOFIX S.r.l.Device for the external fixation of the fragments of a broken bone
EP0323429A1 *Dec 22, 1988Jul 5, 1989Alain GuinounetBone plate locking screw and its fabrication process
EP1042988A1 *Apr 8, 1999Oct 11, 2000Orthofix S.r.l.Bone screw for external fixators
EP1042989A1 *Apr 8, 1999Oct 11, 2000Orthofix S.r.l.Improved bone screw for use in orthopedic surgery
WO1998006346A1 *Jul 31, 1997Feb 19, 1998Biopsys Medical IncApparatus and method for marking tissue
WO1999062419A1 *Jun 3, 1999Dec 9, 1999Smith & Nephew IncProvisional bone plate fixation pin
WO2000061021A1 *Apr 3, 2000Oct 19, 2000Orthofix SrlBone screw for external fixators
WO2000061022A1 *Apr 3, 2000Oct 19, 2000Orthofix SrlImproved bone screw for use in orthopaedic surgery
Classifications
U.S. Classification606/316, 606/102, 606/912
International ClassificationA61B19/00, A61B17/86
Cooperative ClassificationA61B19/54, A61B17/8625, Y10S606/912, A61B2019/307
European ClassificationA61B17/86B