Claims
- 1. An implantable screw for stabilization of a joint or a bone fracture comprising an elongated body with a proximal head portion and a distal insertion portion having a thread, wherein the head portion and the insertion portion are interconnected by a flexible shaft.
- 2. The implantable screw of claim 1 wherein the proximal head portion is provided with a thread.
- 3. The implantable screw of claim 2, wherein the threads of the proximal head portion and the distal insertion portion are identical.
- 4. The implantable screw of claim 1, wherein the thread of the distal insertion portion is a bone thread.
- 5. The implantable screw of claim 3, wherein the thread of each the head portion and the insertion portion are a bone thread
- 6. The implantable screw of claim 1, wherein the body is defined by a planar axial moment of inertia which is 30 percent less than that of a conventional screw.
- 7. The implantable screw of claim 1, wherein the planar axial moment of inertia is 50 percent less than that of a conventional screw of same outer diameter.
- 8. The implantable screw of claim 1, wherein the flexible shaft is a member selected from the group consisting of a wire cable, a wire bundle, a cord, a spiral, multiple webs and fibers.
- 9. The implantable screw of claim 1, wherein the flexible shafts is provided with a reinforcement.
- 10. The implantable screw of claim 9, wherein the reinforcement is a sleeve for sliding onto the shaft.
- 11. The implantable screw of claim 10, wherein the sleeve is configured as a spiral.
- 12. The implantable screw of claim 1, wherein the threaded insertion portion is configured as a stud bolt with a wrench socket and provided with a threaded bolt with a head nut in an area of the head portion.
- 13. The implantable screw of claim 1, wherein the head portion is provided with a wrench socket and configured with a smooth surface.
- 14. The implantable screw of claim 2, wherein the head portion has a diameter which is greater than a diameter of the insertion portion, and has a smaller thread pitch than a thread pitch of the insertion portion.
- 15. The implantable screw of claim 1, wherein the head portion and the insertion portion are each provided with a wrench socket.
- 16. The implantable screw of claim 1, wherein the screw is made from a material selected from the group consisting of biocompatible metal, biocompatible absorbable plastic, biocompatible non-absorbable plastic and a combination thereof.
Priority Claims (1)
Number |
Date |
Country |
Kind |
101 29 490.5 |
Jun 2001 |
DE |
|
CROSS-REFERENCES TO RELATED APPLICATIONS
[0001] This application claims the priority of German Patent Application Serial No. 101 29 490.5, filed Jun. 21, 2001, pursuant to 35 U.S.C. 119(a)-(d), the subject matter of which is incorporated herein by reference.
[0002] This application claims the benefit of prior filed provisional application, Appl. No. 60/301,267, filed Jun. 27, 2001, pursuant to 35 U.S.C. 119(e), the subject matter of which is incorporated herein by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60301267 |
Jun 2001 |
US |