IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0484527
(2009-06-15)
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등록번호 |
US-8105367
(2012-01-31)
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발명자
/ 주소 |
- Austin, Gene Edward
- Black, Brian L.
- Janna, Sied W.
- Petteys, Timothy J.
- Rains, James K.
- Schneider, John B.
- Harmon, Jon A.
- Gerlach, Darin S.
- James, Anthony H.
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
30 인용 특허 :
196 |
초록
▼
A system for fixation of bone, including a bone plate with an opening comprising threads made of a first material and a fastener with a head at least partially comprising a polymeric material that is softer than the first material. In some embodiments, when the fastener is inserted into the first op
A system for fixation of bone, including a bone plate with an opening comprising threads made of a first material and a fastener with a head at least partially comprising a polymeric material that is softer than the first material. In some embodiments, when the fastener is inserted into the first opening, the threads of the first opening form threads in the polymeric material on the head of the fastener and secure the fastener in place at one of a plurality of possible angles within the first opening. The first opening additionally accepts a fastener with a substantially spherical head for compression of a fracture, or a fastener with a threaded head that engages with the threads of the threaded opening. In some embodiments the first opening includes a substantially frustoconical-shaped top portion. In other embodiments there may be a second opening that is either non-threaded or comprises a plurality of protruding fins.
대표청구항
▼
1. A bone plate system for fixation of bone, the system comprising: a) a bone plate comprising a bone contacting surface, an upper surface, and a first opening extending between the bone contacting surface and the upper surface, the first opening comprising a lower portion, a non-threaded upper port
1. A bone plate system for fixation of bone, the system comprising: a) a bone plate comprising a bone contacting surface, an upper surface, and a first opening extending between the bone contacting surface and the upper surface, the first opening comprising a lower portion, a non-threaded upper portion, and a threaded portion converging towards the lower portion, the threaded portion comprising threads of a first material, the lower portion comprising a smallest diameter of the first opening; andb) a first fastener comprising a head at least partially comprising a polymeric material that is softer than the first material,wherein, when the first fastener is inserted into the first opening, the threads of the first opening form threads in the polymeric material on the head of the first fastener to secure the first fastener in place at one of a plurality of possible angles within the first opening. 2. The system of claim 1, wherein the polymeric material comprises polyethylene. 3. The system of claim 1, further comprising a second fastener comprising a shaft for engaging bone and a head having fins, wherein, when the second fastener is inserted in the first opening, the fins on the head of the second fastener engage the threads of the first opening to secure the second fastener in place at one of a plurality of possible angles within the first opening. 4. The system of claim 1, wherein the first opening comprises an axis and wherein the first opening is asymmetrical about the axis. 5. The system of claim 1, wherein the upper portion is adjacent the upper surface of the plate comprises a substantially frustoconical-shaped and the lower portion is adjacent the bone contacting surface of the plate and comprises at least some of the threads. 6. The system of claim 5, wherein the supper portion of the first opening comprises a ramp and a generally spherical-shaped recessed portion. 7. The system of claim 5, wherein the lower portion of the first opening is tapered. 8. The system of claim 1, wherein the bone plate comprises a plurality of first openings. 9. The system of claim 1, wherein the bone plate further comprises a second opening extending between the bone contacting surface and the upper surface, wherein the second opening comprises a plurality of protruding fins. 10. A method of reducing a fracture of a bone, the method comprising: a) reducing the fracture to bring bone fragments in close apposition;b) providing a bone plate comprising a bone contacting surface, an upper surface, and openings extending between the bone contacting and upper surfaces, wherein at least some of the openings comprise threads, the at least some of the openings comprising a lower portion, a non-threaded upper portion, and a threaded portion converging towards the lower portion, the lower portion comprising a smallest diameter of the at least some of the openings;c) compressing the bone plate against the bone with a first fastener to hold the fracture reduction; andd) inserting a second fastener into one of the openings in the bone plate comprising threads,wherein the second fastener comprises a head at least partially comprising a polymeric material, and wherein, when the second fastener is inserted into the at least some of the openings comprising threads, the threads of the opening form threads in the polymeric material of the head of the second fastener to secure the second fastener in place at one of a plurality of possible angles relative to the bone plate. 11. The method of claim 10, wherein the first fastener is inserted before the second fastener. 12. The method of claim 10, wherein the first fastener is inserted after the second fastener. 13. A method of reducing a fracture of a bone, the method comprising: a) providing a bone plate comprising a bone-contacting surface, an upper surface, and a first and second opening extending between the bone-contacting and upper surfaces, wherein the first opening comprises a lower portion, a non-threaded upper portion, and a threaded portion converging towards the lower portion, the lower portion comprising a smallest diameter of the first opening;b) providing a first fastener comprising a head, wherein the head comprises a polymeric material;c) inserting the first fastener through the first opening and on a first side of the fracture, wherein the threads of the first opening form threads in the polymeric material on the head of the first fastener to secure the first fastener in place at one of a plurality of possible angles within the first opening; andd) inserting a second fastener through the second opening and into engagement with the bone on a second side of the fracture opposite the first side to adjust positioning of the bone and surrounding tissue. 14. A bone plate system for fixation of a bone, the system comprising: a) a bone plate comprising an upper surface, a bone contacting surface, and a first opening extending between the bone contacting surface and the upper surface, wherein the first opening comprises a substantially frustoconical-shaped top portion adjacent the upper surface of the plate, a bottom portion adjacent the bone contacting surface of the plate, and a threaded portion converging towards the bottom portion and comprising threads made of a first material, wherein the top portion comprises a non-threaded portion and wherein the bottom portion comprises a smallest diameter of the first opening; andb) a first fastener comprising a head and shaft for engaging bone, wherein a portion of the head comprises a polymeric material that is softer than the first material,wherein, when the first fastener is inserted into the first opening, the threads of the first opening form threads in the polymeric material of the head of the fastener. 15. The system of claim 14, wherein the polymeric material comprises polyethylene. 16. The system of claim 14, wherein the first material comprises titanium, stainless steel, cobalt chrome, plastic, polyetheretherketone, polyethylene, ultra high molecular weight polyethylene, resorbable polylactic acid, polyglycolic acid, or combinations thereof. 17. The system of claim 14, further comprising a second fastener comprising a shaft for engaging bone and a head comprising threads, wherein, when the second fastener is inserted into the first opening, the threads on the head of the second fastener engage with the threads of the first opening. 18. The system of claim 14, further comprising a second fastener comprising a shaft for engaging bone and a head comprising a spherical portion, wherein, when the second fastener is inserted into the first opening, the spherical portion of the head abuts the top portion of the first opening. 19. The system of claim 14, wherein the first opening comprises an axis and wherein the first opening is asymmetrical about the axis. 20. The system of claim 14, wherein the first opening comprises an axis and wherein the top portion comprises a ramp extending from the upper surface at an angle to the axis. 21. The system of claim 14, wherein the top portion of the first opening further comprises a generally spherical-shaped recessed portion. 22. The system of claim 14, wherein the top portion of the first opening further comprises a threaded portion. 23. The system of claim 14, wherein the bottom portion of the first opening is tapered. 24. The system of claim 14, wherein the bone plate comprises a plurality of first openings. 25. The system of claim 14, wherein the bone plate further comprises a second opening comprising a non-threaded opening. 26. The system of claim 25, wherein the bone plate comprises a plurality of second openings.
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