Device for fixing a bony structure to a support member
A device for fixing a bony structure to a support member. The device includes a main body with first and second members, the second member being movable in rotation with respect to the first member, around a first axis. A flexible member passes between the members and forms a loop around a bony structure. A clamping mechanism moves the first and second members into a clamping position. A support member and the flexible member are secured between the members in the clamping position. The first axis is movable in translation along a first direction and the second member is movable in translation along the first direction. The clamping mechanism cooperates with the first and second members to move the second member in translation in the first direction.
1. A fixing device for fixing a bony structure to a support member, the fixing device comprising:
a main body including a first member and a second member movably coupled to the first member such that the second member is pivotable relative to the first member about a first axis and translatable relative to the first member along a first direction transverse to the first axis, the second member including a first oblong opening having a first longitudinal axis; and
a clamping member engaging the main body, the clamping member configured to apply a clamping force to the first and second members to clamp a support member between the first and second members; and
the clamping member extending through the first oblong opening of the second member along a clamping axis that is substantially perpendicular to the first longitudinal axis and being configured to move the first and second members towards each other for clamping the support member therebetween;
wherein the clamping member is configured to engage the second member to translate the second member relative to the first member along the first direction, and wherein the first axis is translatable with respect to the first member or the second member at least in part in the first direction, and further comprising a flexible member extendable through a first passage of the main body, the flexible member including a loop for passing around a bony structure.
2. The fixing device of claim 1 , wherein one of the first and second members is provided with a pivot shaft extending along the first axis, and wherein the other one of the first and second members is provided with at least one second oblong opening through which the pivot shaft passes.
3. The fixing device of claim 2 , wherein the at least one second oblong opening through which the pivot shaft passes has a longitudinal direction substantially parallel to the first direction.
4. The fixing device of claim 2 , wherein the pivot shaft is a one-piece shaft extending through the first and second members.
5. The fixing device of claim 2 , wherein the pivot shaft is defined by two pins protruding from the first member, on opposite sides thereof, and the at least one oblong opening through which the pivot shaft passes includes two oblong openings in the second member for receiving the two pins.
6. The fixing device of claim 2 , wherein the pivot shaft is defined by two pins protruding from the second member, on opposite sides thereof, and the at least one oblong opening through which the pivot shaft passes includes two oblong openings in the first member for receiving the two pins.
7. The fixing device of claim 1 , wherein the clamping member is configured to applying the clamping force to the first and second members through rotation of the clamping member about a rotational axis.
8. The fixing device of claim 7 , wherein the first direction is transverse to the rotational axis.
9. The fixing device of claim 1 , wherein the first and second members collectively define a first passage for receiving the support member therethrough.
10. The fixing device of claim 9 , wherein the first passage is configured to be narrowed as the second member is translated relative to the first member along the first direction.
11. The fixing device of claim 1 , wherein the fixing device is adapted to clamp the flexible member between at least one of the first and second members and the support member, when a support member is clamped between the first and second members.
12. The fixing device of claim 1 , wherein the clamping member is a screw with a screw head and a shank, the shank being threadably engaged with the first member and the screw head being configured to engage the second member when the screw is tightened.
13. A fixing device for fixing a bony structure to a support member, the fixing device comprising:
a main body including a first member and a second member movably coupled to the first member such that the second member is pivotable relative to the first member about a first axis and translatable relative to the first member along a first direction transverse to the first axis, the second member including an oblong opening having a first longitudinal axis;
a flexible member extendable through a first passage of the main body, the flexible member including a loop portion for passing around a bony structure; and
a threaded clamping member engaging the main body, the clamping member configured to apply a clamping force to the first and second members along a clamping axis to clamp a support member between the first and second members;
the threaded clamping member extending through the oblong opening of the second member and threadably engaged with the first member, the threaded clamping member being configured to move the first and second members towards each other for clamping the support member therebetween;
wherein the threaded clamping member is configured to engage the second member to translate the second member relative to the first member along the first direction, wherein the first direction is substantially perpendicular to the clamping axis, and wherein the first axis translates at least in part in the first direction in relationship to the first member or the second member.
14. The fixing device of claim 13 , wherein the threaded clamping member is configured to applying the clamping force to the first and second members through rotation of the threaded clamping member about a rotational axis.
15. The fixing device of claim 14 , wherein the first direction is transverse to the rotational axis.
16. The fixing device of claim 13 , wherein the first and second members collectively define a second passage for receiving the support member therethrough.
17. The fixing device of claim 16 , wherein the second passage is configured to be narrowed as the second member is translated relative to the first member along the first direction.
18. The fixing device of claim 13 , wherein the fixing device is adapted to clamp the flexible member between at least one of the first and second members and the support member, when a support member is clamped between the first and second members.
19. The fixing device of claim 13 , wherein one of the first and second members is provided with a pivot shaft extending along the first axis, and wherein the other one of the first and second members is provided with at least one second oblong opening through which the pivot shaft passes.