Amputation bone cap

• US 8,110,002 B2
• Filed: 01/21/2009
• Issued: 02/07/2012
• Est. Priority Date: 01/17/2008
• Status: Expired due to Fees

• Current Assignee: Orthorifling Systems, LLC
• Original Assignee: Martin M. Malawer
• Inventors: Malawer, Martin M.
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): Dukert, Brian
• Application Number:
  US12/356,755
• Publication Number:
  US 20100016992A1
• Time in Patent Office: 1,112 Days
• Field of Search: None
• US Class Current: 623/16.11
• 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 for attaching muscle tissue provided along a direction of an axial length of the head;

a second portion configured to provide a stem along said direction of the axial length of said head, said stem configured to connect to a muscle-supporting structure; and

a stem, said stem extending from the second portion of the head and adapted for insertion into a muscle-supporting structure, wherein

said head is configured to be exposed in relation to a muscle-supporting structure to allow attaching at least one surgical tape to said first portion for fastening said muscle tissue.

2. The cap of claim 1, wherein the head and the stem comprise one integral part.

3. The cap of claim 1, wherein the head and the stem comprise two parts.

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

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

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

7. The cap of claim 1, wherein the stem is capable of being anchored to a bone canal by impaction.

8. The cap of claim 1 being composed of cobalt chrome or titanium.

9. The cap of claim 1, wherein the muscle-supporting structure is a bone.

10. The cap of claim 1, wherein the muscle-supporting structure is a prosthesis device.

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

12. 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 along another side of the head opposite the first group.

13. The cap of claim 1, wherein the stem comprises a flange.

14. A modular muscle fastening system, comprising:

a first head 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, each through hole is configured to receive at least one surgical tape for attaching muscle tissue to the first head portion, and said head portion is configured to be exposed in relation to the member of the prosthesis device to allow attaching said at least one surgical tape to said head portion for attaching said muscle tissue.

15. The system of claim 14, wherein the stem portion comprises a tapered surface.

16. The system of claim 14, wherein the first head portion and stem portion are formed of a single integral material.

17. The system of claim 14, wherein the first head portion has a hemispherical shape.

18. The system of claim 14, wherein the first head portion has a conical shape.

19. The system of claim 14, wherein the stem portion can be a female part.

20. The system of claim 14, wherein the member of a prosthesis device can be a female part.