Winged compression bolt orthopedic fastener

• US 5,098,433 A
• Filed: 04/12/1989
• Issued: 03/24/1992
• Est. Priority Date: 04/12/1989
• Status: Expired due to Fees

• Current Assignee: Yosef Freedland
• Original Assignee: Yosef Freedland
• Inventors: Freedland, Yosef
• Primary Examiner(s): Hafer, Robert A.
• Assistant Examiner(s): ROONEY, KEVIN
• Application Number:
  US07/336,721
• Time in Patent Office: 1,077 Days
• Field of Search: 128/92 Y, 128/92 YZ, 128/92 YY, 128/92 YK, 128/92 YW, 128/92 YV, 128/92 YT, 128/92 YS, 606/63, 606/60, 606/62, 606/68
• US Class Current: 606/63
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642

Abstract

A winged compression bolt for repairing or fusing bone which is implanted and later removed from bone through a single skin incision. The device includes a central elongated shaft which movably sits in an outer cylindrical tube and supports adjacent one of its ends a pair of wings. A bore is drilled through the bone portions, the device is inserted and the wings are rotated to the horizontal position and compressed against the edge of the outer cylindrical tube and an adjacent bone surface. A securing means is on the opposite end of the central elongated shaft and tightened against the adjacent edge of the outer cylindrical tube and an adjacent bone surface, compressing the bone portions between the securing means and the wings.

To remove the device, the securing means is removed, the outer cylindrical tube is removed and the central elongated shaft is pulled through the bore in the bone, causing the wings to rotate from the horizontal to the vertical position and trail the shaft as it is removed from the bore.

Claims

1. A winged compression bolt for fusing a first bone having a cortex and an interior portion to a second bone having a cortex and interior portion together at a location where the cortexes of the two bones are set adjacent one another, comprising:

a. a hollow outer sleeve having a sidewall enclosing a centrally disposed opening within the sleeve, a front end and a rear end;

b. the length of said hollow outer sleeve being approximately equal to the longest distance from the cortex of the first bone to the cortex of the second bone at the location where the two bones are laid adjacent each other to be fused together;

c. an elongated shaft having a front end and a rear end and which is movably set in the opening in said hollow outer sleeve;

d. the length of said elongated shaft being greater than the length of said hollow outer sleeve such that both the front end and the rear end of the elongated shaft extend beyond the hollow outer sleeve;

e. at least one rotatable wing having a straight edge and rotatably supported on said shaft adjacent the front end of said shaft; and

f. a securing means located adjacent the rear end of said shaft;

g. whereby when the two bones are aligned adjacent one another for a portion of their length, a bore extending from the cortex of the first bone through its interim portion, through the adjacent cortex portions of the first and second bones, through the interior portion of the second bone and through the outer cortex of the second bone can accommodate the winged compression bolt by having said hollow outer sleeve and inner elongated shaft inserted through the bore such that the front end of the hollow outer sleeve lies adjacent the outer surface of the cortex of the second bone and the rear end of the hollow outer sleeve lies adjacent the remote outer surface of the cortex of the first bone such that the straight edge of said at least one rotatable wing lies along the outer surface of the cortex of said second bone and also touches the surface of the front end of the hollow outer sleeve and said securing means is tightened against the remote surface of the cortex of the first bone to thereby provide a compressive force generated between said at least one rotatable wing and the securing means to thereby provide a compressive force to fuse the two bones together.

3. A winged compression bolt in accordance with claims 1 or 2 wherein said securing means further comprises a hollow collar having threads along a portion of its interior wall and fit around the rear end of said hollow outer sleeve, and a threaded bolt threaded into said hollow collar and press fit against said hollow sleeve such that said hollow collar can be rotated relative to the threaded bolt and tightened against the remote surface of the cortex of the first bone.

4. A winged compression bolt in accordance with claims 1 or 2 wherein said elongated shaft further comprises a multiplicity of ridges on at least one of its lateral surfaces and said securing means further comprises a hollow collar having at least one tongue protruding inwardly whereby the hollow collar can be affixed to the elongated shaft by a mating of the at least one tongue with at least one ridge on the elongated shaft and the hollow collar is further press fit against the remote outer surface of the hollow sleeve.

5. A winged compression bolt in accordance with claims 1 or 2 wherein said elongated shaft further comprises a multiplicity of holes through its width and said securing means comprises a pin which can be placed through one of said holes in the elongated shaft and the pin is press fit against the outer hollow sleeve.

6. A winged compression bolt in accordance with claims 1 or 2 wherein a washer may be placed between said securing means and bone surface to create compression on the cortexes of bone.

2. A winged compression bolt for fusing a first bone having a cortex and an interior portion to a second bone having a cortex and interior cancellous portion together at a location where the cortexes of the two bones are set adjacent one another, comprising:

a. a hollow outer sleeve having a sidewall enclosing a centrally disposed opening within the sleeve, a front end and a rear end;

b. the length of said hollow outer sleeve being approximately equal to the distance from the cortex of the first bone at its location remote from the location where the cortexes of the first and second bones are adjacent each other to the interior of the cortex of the second bone at the location where the cortexes of the first and second bones are adjacent each other, when the two bones are laid adjacent each other to be fused together;

c. an elongated shaft having a front end and a rear end and which is movably set in said hollow outer sleeve;

d. the length of said elongated shaft being greater than the length of said hollow outer sleeve such that both the front end and the rear end of the elongated shaft extend beyond the hollow outer sleeve;

e. at least one rotatable wing having a straight edge and rotatably supported on said shaft adjacent the front end of said shaft; and

f. a securing means located adjacent the rear end of said shaft;

g. whereby when the two bones are aligned adjacent one another for a portion of their length, a bore extending entirely through the first bone and extending into the second bone past the interior of the cortex and into its cancellous portion can accommodate the winged compression bolt by having said hollow outer sleeve and inner elongated shaft inserted through the bore such that the front end of the hollow outer sleeve lies within the second bone and adjacent the interior of the cortex of the second bone at the location where the cortexes of the first and second bones are adjacent each other, and the rear end of the hollow outer sleeve lies adjacent the remote outer surface of the cortex of the first bone such that the straight edge of said at least one rotatable wing lies along the interior surface of the cortex of said second bone at the location where the cortexes of the first and second bones are adjacent each other, and also touches the surface of the front end of the hollow outer sleeve, and said securing means is tightened against the remote surface of the cortex of the first bone to thereby provide a compressive force generated between said at least one rotatable wing and the securing means to thereby provide a compressive force to fuse the two bones together.

7. A winged compression bolt for fusing a first bone having a cortex and an interior portion to a second bone having an outer cortex and interior cancellous portion together at a location where the cortexes of the two bones are set adjacent one another, comprising:

a. a hollow outer sleeve further comprising a sidewall enclosing a centrally disposed opening extending through the sleeve, a front end including a pair of oppositely disposed beveled sections in the sidewall, and a rear end;

b. the length of said hollow outer sleeve being approximately equal to the longest distance from the cortex of the first bone to the cortex of the second bone at the location where the two bones are laid adjacent each other to be fused together;

c. an elongated shaft having a front end and a rear end and which is movably set in said hollow sleeve;

d. the length of said elongated shaft being greater than the length of said hollow outer sleeve such that both the front end and the rear end of the elongated shaft extend beyond the hollow outer sleeve;

e. a first rotatable wing having a straight edge;

f. a second rotatable wing having a straight edge;

g. said first rotatable wing rotatably supported on one side of said shaft and adjacent the front end of said shaft;

h. said second rotatable wing rotatably supported on the side of said shaft opposite to the side supporting said first wing, and adjacent the front end of said shaft such that the second wing is oppositely disposed to the first wing; and

i. a securing means located adjacent the rear end of said shaft;

j. whereby when the two bones are aligned adjacent one another for a portion of their length, a bore extending from the cortex of the first bone through its interior portion, through the adjacent cortex portions of the first and second bones, through the portion of the second bone and through the interior cortex of the second bone can accommodate the winged compression bolt by having said hollow outer sleeve and inner elongated shaft inserted through the bore such that the front end of the hollow outer sleeve lies adjacent the outer surface of the cortex of the second bone and the rear end of the hollow outer sleeve lies adjacent the remote outer surface of the cortex of the first bone such that the straight edge of said first wing can be rotated relative to said elongated shaft such that its straight edge can move along one beveled edge on the front edge of the hollow sleeve and become aligned generally parallel to and lie along the outer surface of the cortex of said second bone and also touches the surface of the front end of the hollow outer sleeve and said second wing can be rotated relative to said shaft such that its straight edge can move along the opposite beveled edge on the front edge of the hollow sleeve and become aligned generally parallel to and lie along the outer surface of the cortex of said second bone and also touches the surface of the front end of the hollow outer sleeve and extend in the direction opposite to the direction of the straight edge of the first wing, and said securing means is tightened against the remote surface of the cortex of the first bone to thereby provide a compressive force generated between said first and second rotatable wings and the securing means to thereby provide a compressive force to fuse the two bones together.

9. A winged compression bolt in accordance with claims 7 or 8 wherein said securing means further comprises a hollow collar having threads along a portion of its interior wall and fit around the rear end of said hollow outer sleeve, and a threaded bolt threaded into said hollow collar and press fit against said hollow sleeve such that said hollow collar can be rotated relative to the fixed bolt and tightened against the remote outer surface of the cortex of the first bone.

10. A winged compression bolt in accordance with claims 7 or 8 wherein said elongated shaft further comprises a multiplicity of ridges on at least one of its lateral surfaces and said securing means further comprises a hollow collar having at least one tongue protruding inwardly whereby the hollow collar can be affixed to the elongated shaft by a mating of the at least one tongue with at least one ridge on the elongated shaft and the hollow collar is further press fit against the remote outer surface of the hollow sleeve.

11. A winged compression bolt in accordance with claims 7 or 8 wherein said elongated shaft further comprises a multiplicity of holes through its width and said securing means comprises a pin which can be placed through one of said holes in the elongated shaft and the pin is press fit against the outer hollow sleeve.

12. A winged compression bolt in accordance with claims 7 or 8 wherein a washer may be placed between said securing means and bone surface to create compression on the cortexes of bone.

8. A winged compression bolt for fusing a first bone having an outer cortex and an interior portion to a second bone having an outer cortex and interior portion together at a location where the cortexes of the two bones are set adjacent one another, comprising:

a. a hollow outer sleeve further comprising a sidewall enclosing a centrally disposed opening extending through the sleeve, a front end including a pair of oppositely disposed beveled sections in the sidewall, and a rear end;

b. the length of said hollow outer sleeve being approximately equal to the distance from the cortex of the first bone at its location remote from the location where the cortexes of the first and second bones are adjacent each other to the interior of the cortex of the second bone at the location where the cortexes of the first and second bones are adjacent each other, when the two bones are laid adjacent each other to be fused together;

c. an elongated shaft having a front end and a rear end and which is movably set in said hollow sleeve;

d. the length of said elongated shaft being greater than the length of said hollow outer sleeve such that both the front end and the rear end of the elongated shaft extend beyond the hollow outer sleeve;

e. a first rotatable wing having a straight edge;

f. a second rotatable wing having a straight edge;

g. said first rotatable wing rotatably supported on one side of said shaft and adjacent the front end of said shaft;

h. said second rotatable wing rotatably supported on the side of said shaft opposite to the side supporting said first wing, and adjacent the front end of said shaft such that the second wing is oppositely disposed to the first wing; and

i. a securing means located adjacent the rear end of said shaft;

j. whereby when the two bones are aligned adjacent one another for a portion of their length, a bore extending entirely through the first bone and extending into the second bone past the cortex and into its interior portion can accommodate the winged compression bolt by having said hollow outer sleeve and inner elongated shaft inserted through the bore such that the front end of the hollow outer sleeve lies within the interior of the second bone at the location where the cortexes of the first and second bones are adjacent each other, and the rear end of the hollow outer sleeve lies adjacent the remote surface of the cortex of the first bone such that the straight edge of said first wing can be rotated relative to said elongated shaft such that its straight edge can move along one beveled edge on the front edge of the hollow sleeve and become aligned generally parallel to and lie along the interior surface of the outer cortex of said second bone at the location where the cortex of the first and second bones are adjacent each other, and also touches the surface of the front end of the hollow outer sleeve, and said second wing can be rotated relative to said shaft such that its straight edge can move along the opposite beveled edge on the front edge of the hollow sleeve and become aligned generally parallel to and lie along the interior surface of said second bone at the location where the cortex of the first and second bones are adjacent each other, and also touches the surface of the front end of the hollow outer sleeve and extend in the direction opposite to the direction of the straight edge of the first wing, and said securing means is tightened against the remote surface of the cortex of the first bone to thereby provide a compressive force generated between said first and second rotatable wings and the securing means to thereby provide a compressive force to fuse the two bones together.

13. A winged compression bolt for fusing first and second bones together comprising:

a. a hollow outer sleeve having a sidewall enclosing a centrally disposed opening within the sleeve, a front end and a rear end;

b. an elongate shaft having a front end and a rear end and which is movably set in the opening in said hollow outer sleeve;

c. at least one wing having a straight edge and rotatably supported via pivot means on said shaft front end;

d. wherein said shaft front end and said pivot means extend beyond the front end of said hollow outer sleeve and said wing is rotatable into a deployed position.

14. The invention in accordance with claim 13 wherein said

hollow outer sleeve is moved against said wing causing it to rotate into the deployed position.

15. The invention in accordance with claim 13 further comprising means for

providing a compressive force, said means comprising a pair of oppositely disposed wings each wing having a straight edge aligned against an edge of the hollow outer sleeve and against an adjacent exterior surface of the second bone when said wings are in the deployed position.

16. The invention in accordance with claim 13 further comprising

a securing means on the rear end of the shaft which is tightened against the shaft and the exterior surface of the first bone remote from the second bone to create a compressive force between a said wing and the securing means.

17. A winged compression bolt for fusing sections of bone together comprising:

a. a hollow outer sleeve having a sidewall enclosing a centrally disposed opening within the sleeve, a front end and a rear end;

b. an elongate shaft having a front end and a rear end and which is movably set in the opening in said hollow outer sleeve;

c. at least one wing having a straight edge and rotatably supported via pivot means on said shaft front end;

d. wherein said shaft front end and said pivot means extend beyond the front end of said hollow outer sleeve and said wing is rotatable into a deployed position to provide a compressive force against a surface of the cortex of a bone.

18. The invention in accordance with claim 17 wherein said

hollow outer sleeve is moved against said wing causing it to rotate into the deployed position.

19. The invention in accordance with claim 17 further comprising means for

providing a compressive force, said means comprising a pair of oppositely disposed wings each wing having a straight edge aligned against an edge of the hollow outer sleeve and against an adjacent portion of the internal surface of the bone when said wings are in the deployed position.

20. The invention in accordance with claim 17 further comprising

a securing means on the rear end of the shaft which is tightened against the shaft and the exterior surface of the bone remote from said wing to create a compressive force between said wing and the securing means.

21. A winged compression bolt for fixating broken sections of a bone, comprising:

a. a hollow outer sleeve having a sidewall enclosing a centrally disposed opening within the sleeve, a front end and a rear end;

b. the length of the hollow outer sleeve being approximately equal to the width of the combined sections of broken bone at the location where the sections are being fixated together;

c. an elongated shaft having a front end and a rear end and which is movably set in said hollow outer sleeve;

d. the length of said elongated shaft being greater than the length of said hollow outer sleeve such that both the front end and the rear end of the elongated shaft extend beyond the hollow outer sleeve;

e. at least one rotatable wing having a straight edge and rotatably supported on said shaft adjacent the front end of said shaft; and

f. a securing means located adjacent the rear end of said shaft;

g. whereby a bore extending through the sections of broken bone and intersecting the area of fracture can accommodate the winged compression bolt by having said hollow outer sleeve and inner elongated shaft inserted through the bore such that the front end of the hollow outer sleeve lies adjacent one outer surface of the broken bone and the rear end of the hollow outer sleeve lies adjacent the opposite outer surface of the broken bone such that the straight edge of said at least one rotatable wing lies along the front edge of said hollow outer sleeve and an adjacent section of outer bone surface and said securing means is tightened against said rear end of said hollow outer sleeve to thereby provide a compressive force generated between said at least one rotatable wing and the securing means to thereby provide a compressive force to fixate the broken sections of bone together.

22. A winged compression bolt in accordance with claim 21 wherein said securing means further comprises a hollow collar having threads along a portion of its interior wall and fit around the rear end of said hollow outer sleeve, and a threaded bolt threaded into said hollow collar and press fit against said hollow sleeve such that said hollow collar can be rotated relative to the fixed bolt and tightened against the remote surface of the cortex of the bone.

23. A winged compression bolt in accordance with claim 21 wherein said elongated shaft further comprises a multiplicity of ridges on at least one of its lateral surfaces and said securing means further comprises a hollow collar having at least one tongue protruding inwardly whereby the hollow collar can be affixed to the elongated shaft by a mating of the at least one tongue with at least one ridge on the elongated shaft and the hollow collar is further press fit against the remote outer surface of the hollow sleeve.

24. A winged compression bolt in accordance with claim 21 wherein said elongated shaft further comprises a multiplicity of holes through its width and said securing means comprises a pin which can be placed through one of said holes in the elongated shaft and the pin is press fit against the outer hollow sleeve.

25. A winged compression bolt in accordance with claim 21 wherein a washer may be placed between said securing means and bone surface to create compression on the cortexes of bone.

26. A winged compression bolt for fixating broken sections of bone, comprising:

a. a hollow outer sleeve further comprising a sidewall enclosing a centrally disposed opening extending through the sleeve, a front end including a pair of oppositely disposed beveled sections in the sidewall, and a rear end;

b. the length of the hollow outer sleeve being approximately equal to the width of the combined sections of broken bone at the location where the sections are being fixated together;

c. an elongated shaft having a front end and a rear end and which is movably set in said hollow outer sleeve;

d. the length of said elongated shaft being greater than the length of said hollow outer sleeve such that both the front end and the rear end of the elongated shaft extend beyond the hollow outer sleeve;

e. a first rotatable wing having a straight edge;

f. a second rotatable wing having a straight edge;

g. said first rotatable wing rotatably supported on one side of said shaft and adjacent the front end of said shaft;

h. said second rotatable wing rotatably supported on the side of said shaft opposite to the side supporting said first wing, and adjacent the front end of said shaft such that the second wing is oppositely disposed to the first wing; and

i. a securing means located adjacent the rear end of said shaft;

j. whereby a bore extending through the sections of broken bone and intersecting the area of fracture can accommodate the winged compression bolt by having said hollow outer sleeve and inner elongated shaft inserted through the bore such that the front end of the hollow outer sleeve lies adjacent one outer surface of the broken bone and the rear end of the hollow outer sleeve lies adjacent the opposite outer surface of the broken bone such that said first wing can be rotated relative to said shaft such that its straight edge can move along one beveled edge on the front edge of the hollow outer sleeve and become aligned generally parallel to and adjacent the front edge of said hollow outer sleeve and lie along an adjacent section of outer bone surface to one side of said hollow outer sleeve and said second wing can be rotated relative to said shaft such that its straight edge can move along the opposite beveled edge on the front edge of the hollow outer sleeve and become aligned generally parallel to and adjacent the front edge of said hollow outer sleeve and lie along an adjacent section of outer bone surface to the opposite side of said hollow outer sleeve and said securing means is tightened against said rear end of said hollow outer sleeve to thereby provide a compressive force generated between said first and second rotatable wings and the securing means to thereby provide a compressive force to fixate the broken sections of bone together.

27. A winged compression bolt in accordance with claim 26 wherein said securing means further comprises a hollow collar having threads along a portion of its interior wall and fit around the rear end of said hollow outer sleeve, and a threaded bolt threaded into said hollow collar and press fit against said hollow sleeve such that said hollow collar can be rotated relative to the fixed bolt and tightened against the remote outer surface of the cortex of the bone.

28. A winged compression bolt in accordance with claim 26 wherein said elongated shaft further comprises a multiplicity of ridges on at least one of its lateral surfaces and said securing means further comprises a hollow collar having at least one tongue protruding inwardly whereby the hollow collar can be affixed to the elongated shaft by a mating of the at least one tongue with at least one ridge on the elongated shaft and the hollow collar is further press fit against the remote outer surface of the hollow sleeve.

29. A winged compression bolt in accordance with claim 26 wherein said elongated shaft further comprises a multiplicity of holes through its width and said securing means comprises a pin which can be placed through one of said holes in the elongated shaft and the pin is press fit against the outer hollow sleeve.

30. A winged compression bolt in accordance with claim 26 wherein a washer may be placed between said securing means and bone surface to create compression on the cortexes of bone.

31. A winged compression bolt for fixating broken sections of bone comprising:

a. a hollow outer sleeve having a sidewall enclosing a centrally disposed opening within the sleeve, a front end and a rear end;

b. an elongate shaft having a front end and a rear end and which is movably set in the opening in said hollow outer sleeve;

c. at least one wing having a straight edge and rotatably supported via pivot means on said shaft front end;

d. wherein said shaft front end and said pivot means extend beyond the front end of said hollow outer sleeve and said wing is rotatable into a deployed position to provide compressive force against the external surface of the cortex of a bone.

32. The invention in accordance with claim 31 wherein said hollow outer sleeve is moved against said wing causing it to rotate into the deployed position.

33. The invention in accordance with claim 31 further comprising means for providing a compressive force, said means comprising a pair of oppositely disposed wings each wing having a straight edge aligned against an edge of the hollow outer sleeve and against an adjacent surface of exterior bone when said wings are in the deployed position.

34. The invention in accordance with claim 31 further comprising

a securing means on the rear end of the shaft which is tightened against the shaft and the exterior surface of the bone to create a compressive force between said wing and the securing means.