AMPUTATION BONE CAP

• US 20100016992A1
• Filed: 01/21/2009
• Published: 01/21/2010
• Est. Priority Date: 01/17/2008
• Status: Active Grant

• Current Assignee: Orthorifling Systems, LLC
• Original Assignee: Martin M. Malawer
• Inventors: Malawer, Martin M.
• Granted Patent: US 8,110,002 B2
• Time in Patent Office: Days
• US Class Current: 623/33
• CPC Class Codes: A61F 2/2814 Bone stump caps
• CPC Class Codes: A61F 2/30749 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2/36 Femoral heads ; Femoral endoprostheses
• CPC Class Codes: A61F 2002/30332 Conically- or frustoconically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/3085 with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
• CPC Class Codes: A61F 2002/30878 with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30881 Circumferential ribs, flanges or fins
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit

Abstract

A muscle fastening cap includes a head having one or more groups of openings along a direction of its axial length. The cap also may include a stem adapted for insertion into a muscle-supporting structure such as an intramedullary canal or a prosthesis device.

Claims

1. A muscle fastening cap, comprising:

a head including a first portion, said first portion comprising at least one group of openings or attaching at least one muscle provided along a direction of an axial length of the head; and

a second portion for providing a stem that connects to a muscle-supporting structure.

2. The cap of claim 1, further comprising a stem, said stem extending from the second portion of the head and adapted for insertion into a muscle-supporting structure.

3. The cap of claim 2, wherein the head and the stem comprise one integral part.

4. The cap of claim 2, wherein the head and the stem comprise two parts.

5. The cap of claim 1, wherein the openings extend through the head in a direction substantially perpendicular to the direction of the axial length.

6. The cap of claim 1, wherein the head has a hemispherical shape.

7. The cap of claim 1, wherein the head has a conical shape.

8. The cap of claim 2, wherein the stem is capable of being anchored to a bone canal by impaction.

9. The cap of claim 2 being composed of cobalt chrome or titanium.

10. The cap of claim 2, wherein the muscle-supporting structure is a bone.

11. The cap of claim 2, wherein the muscle-supporting structure is a prosthesis device.

12. The cap of claim 1, wherein the head is substantially rounded at the first portion.

13. The cap of claim 1, wherein a first group of the openings is arranged along one side of the head, and a second group of the openings is arranged on a side of the head opposite the first group.

14. The cap of claim 2, wherein the stem comprises a flange.

15. A modular muscle fastening system, comprising:

a first portion including at least one group of through holes substantially aligned along a first direction; and

a stem portion extending from the first portion in the first direction,

wherein the stem portion is configured to mate with a member of a prosthesis device to provide a mechanical connection between the stem portion and the prosthesis device.

16. The system of claim 15, wherein the stem portion comprises a tapered surface.

17. The system of claim 15, wherein each through hole is configured to receive at least one surgical tape for securing muscle tissue to the first portion.

18. The system of claim 15, wherein the first portion and stem portion are formed of a single integral material.

19. The system of claim 15, wherein the first portion has a hemispherical shape.

20. The system of claim 15, wherein the first portion has a conical shape.

21. The system of claim 15, wherein the stem portion can be a female part.

22. The system of claim 15, wherein the member of a prosthesis device can be a female part.

24. The method of claim 21, wherein the stem comprises a tapered surface.

25. The method of claim 21, wherein each through hole is configured to receive at least one of said plurality of surgical tapes for securing muscle tissue to the first portion.

26. The method of claim 21, wherein the first portion and second portion are formed of a single integral material.

27. The method of claim 21, wherein the first portion has a hemispherical shape.

28. The method of claim 21, wherein the first portion has a conical shape.

23. A method of fastening a modular muscle of an amputee, comprising:

providing a muscle cap having a first portion and a second portion, the first portion including at least one group of through holes substantially aligned along a first direction and the second portion forming a stem extending from the first portion in the first direction, positioning the stem portion in a muscle-supporting structure; and

passing a plurality of surgical tapes through respective through holes formed in said first portion, and

securing said surgical tapes to adjacent muscle tissue.