TOOL

• US 20070162038A1
• Filed: 10/18/2006
• Published: 07/12/2007
• Est. Priority Date: 10/18/2005
• Status: Abandoned Application

• Current Assignee: Finsbury (Development) Limited (WPP PLC)
• Original Assignee: Finsbury (Development) Limited (WPP PLC)
• Inventors: Tuke, Michael
• Application Number:
  US11/550,559
• Publication Number:
  US 20070162038A1
• Time in Patent Office: Days
• US Class Current: 606/88
• CPC Class Codes: A61F 2/3601 for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices non-prosthetic internal fixation devices for the femoral head or neck A61B17/74
• CPC Class Codes: A61F 2/4607 of hip femoral endoprostheses
• CPC Class Codes: A61F 2002/4627 with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
• CPC Class Codes: A61F 2002/4628 with linear motion along or rotating motion about an axis transverse to the instrument axis or to the implantation direction, e.g. clamping

Abstract

A jig for the application of a femoral head resurfacing prosthesis to a prepared femoral head wherein the jig comprises: at least one support arm having a proximal and a distal end; a jaw located at the distal end of the support arm and angled to the plane of the support arm; a static member located at the proximal end of the or each support arm; an applicator member associated with the static member and movable with respect thereto; and a connector means to enable the applicator member in use to interact with an outer surface of a femoral head resurfacing prosthesis; the applicator member comprising operating means to enable the applicator member to be moved from a first upper position to a second lower position.

Claims

1. A jig for the application of a femoral head resurfacing prosthesis to a prepared femoral head wherein the jig comprises:

at least one support arm having a proximal and a distal end;

a jaw located at the distal end of the support arm and angled to the plane of the support arm;

a static member located at the proximal end of the or each support arm;

an applicator member associated with the static member and movable with respect thereto; and

a connector means to enable the applicator member in use to interact with an outer surface of a femoral head resurfacing prosthesis;

the applicator member comprising operating means to enable the applicator member to be moved from a first upper position to a second lower position.

2. A jig according to claim 1 wherein the jaw is a ring.

3. A jig according to claim 1 wherein the jaw is located such that it is substantially perpendicular to the support arm.

4. A jig according to claim 2 wherein the jaw is positioned such that the centre of the applicator member is in line with the centre point of the ring.

5. A jig according to claim 1 wherein the jig additionally includes a detachable collar.

6. A jig according to claim 5 wherein the collar is a split ring.

7. A jig according to claim 1 wherein the static member located at the proximal end of the or each support arm is a collar in which the applicator member is movable.

8. A jig according to claim 7 wherein the applicator member is a sliding-fit in the collar.

9. A jig according to claim 8 wherein the upper end of the applicator member is provided with operating means to enable the applicator member to be depressed.

10. A jig according to claim 9 wherein the operating means is a plate.

11. A jig according to claim 9 wherein at least a portion of the support arm is shaped to provide a position for at least one of the user'"'"'s fingers in use.

12. A jig according to claim 1 wherein one or more handles is present.

13. A jig according to claim 1 wherein the operating means is mechanical means.

14. A jig according to claim 1 wherein the applicator means is threaded and cooperating threads are provided on the static member.

15. A jig according to claim 1 wherein the operating means is a rack and pinion arrangement.

16. A jig according to claim 1 wherein the operating means is a trigger mechanism.

17. A jig according to claim 1 wherein the connector means is formed by the shape of the end of the applicator member.

18. A jig according to claim 1 wherein the connector means is a plunger located on the distal end of the applicator means.

19. A jig according to claim 18 wherein the plunger is formed from a plastics material.

20. A jig according to claim 1 wherein the support arm is configured such that the jaw interacts with the femoral neck.

21. A jig according to claim 1 wherein the support arm is configured such that the jaw interacts with the femoral neck.