IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0269328
(2005-11-08)
|
등록번호 |
US-7569054
(2009-08-24)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
111 인용 특허 :
180 |
초록
▼
An apparatus for use in human surgery has a tubular member with a passage for providing protected access to a surgical site. The passage has a minimum width transverse to the mid-longitudinal axis of the tubular member. Two opposed extensions extend from the distal end of the tubular member. The ex
An apparatus for use in human surgery has a tubular member with a passage for providing protected access to a surgical site. The passage has a minimum width transverse to the mid-longitudinal axis of the tubular member. Two opposed extensions extend from the distal end of the tubular member. The extensions each have a length and a maximum height perpendicular to the length. The maximum height of the extensions are less than the length of each extension and greater than one-half the minimum width of the passage. Each extension has an interior surface at least in part facing the mid-longitudinal axis of the tubular member. The interior surfaces of the extensions are spaced apart from one another along the length of each extension a distance no less than the minimum width of the passage. Each extension has opposed bone contacting surfaces configured to contact portions of bone.
대표청구항
▼
I claim: 1. An apparatus for use in human surgery, comprising: a tubular member having a proximal end, a distal end opposite said proximal end, a passage for providing protected access to a surgical site from said proximal end to said distal end, and a mid-longitudinal axis through said proximal an
I claim: 1. An apparatus for use in human surgery, comprising: a tubular member having a proximal end, a distal end opposite said proximal end, a passage for providing protected access to a surgical site from said proximal end to said distal end, and a mid-longitudinal axis through said proximal and distal ends, said passage having a minimum width transverse to the mid-longitudinal axis; and at least two opposed extensions extending from said distal end of said tubular member, said extensions each having a length and a maximum height perpendicular to the length, the maximum height of each of said extensions being less than the length of each extension and greater than one-half the minimum width of said passage, each of said extensions having an interior surface at least in part facing the mid-longitudinal axis of said tubular member, said interior surfaces of said extensions being spaced apart from one another along the length of each extension a distance no less than the minimum width of said passage, each of said extensions having opposed bone contacting surfaces configured to contact portions of bone. 2. The apparatus of claim 1, wherein said extensions are rigidly fixed to said tubular member. 3. The apparatus of claim 1, wherein said bone contacting surfaces of said extensions have a height therebetween adapted to space apart bones. 4. The apparatus of claim 1, wherein said tubular member and said extensions each have an exterior surface, said exterior surface of said tubular member and said extensions being coextensive. 5. The apparatus of claim 1, wherein said interior surface of each of said extensions are at least in part concave. 6. The apparatus of claim 1, wherein said tubular member has a maximum width transverse to the mid-longitudinal axis, the maximum height of each of said extensions being less than the maximum width of said tubular member. 7. The apparatus of claim 1, wherein the maximum height of each of said extensions is less than the minimum width of said passage. 8. The apparatus of claim 1, wherein each of said extensions has a tapered tip. 9. The apparatus of claim 1, wherein said extensions have the same height. 10. The apparatus of claim 1, wherein said contacting surfaces of each of said extensions converge away from said tubular member along at least a portion of their length. 11. The apparatus of claim 1, wherein said passage is sized to accommodate at least two surgical instruments therethrough. 12. The apparatus of claim 1, wherein said passage has a circular cross section transverse to and along at least a portion of the mid-longitudinal axis of said tubular member. 13. The apparatus of claim 1, wherein said passage has a non-circular cross section transverse to and along at least a portion of the mid-longitudinal axis of said tubular member. 14. The apparatus of claim 1, wherein said tubular member includes a sidewall surrounding the mid-longitudinal axis of said tubular member, said sidewall including at least one opening in communication with said passage. 15. The apparatus of claim 1, further comprising at least one tissue engaging projection extending from and integral with said distal end of said tubular member. 16. The apparatus of claim 15, wherein said at least one tissue engaging projection has a length, the length of each of said extensions being greater than the length of said at least one tissue engaging projection. 17. The apparatus of claim 15, wherein said at least one tissue engaging projection includes a tooth. 18. The apparatus of claim 15, wherein said at least one tissue engaging projection includes a prong. 19. The apparatus of claim 1, in combination with an orthopedic implant. 20. The apparatus of claim 1, in combination with a bone graft. 21. The apparatus of claim 1, in combination fusion implant. 22. The apparatus of claim 21, in combination with a fusion promoting material. 23. The apparatus of claim 22, wherein said fusion promoting material includes bone. 24. The apparatus of claim 1, further comprising a footplate proximate said distal end of said tubular member. 25. The apparatus of claim 1, wherein each of said extensions has a longitudinal axis parallel to the mid-longitudinal axis of said tubular member. 26. The apparatus of claim 1, wherein said tubular member has a length along the mid-longitudinal axis greater than the length of each of said extensions. 27. The apparatus of claim 1, wherein said distal end of said tubular member includes a shoulder configured to prevent over-penetration of said extensions between the portions of bone. 28. The apparatus of claim 1, wherein said extensions are rigid. 29. The apparatus of claim 1, wherein said extensions are adapted to penetrably engage bone.
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