Vertebral fixation system
A vertebral fixing system having a flexible elongated member, a connecting part, and an anchor, where the anchor may engage a bone structure (e.g., a vertebra) through an opening of the connecting part and the flexible elongated member may connect to the connecting part. In some cases, the vertebral fixing system may include a tightening part configured to apply a tension to the elongated member and/or secure the elongated member with respect to the connecting part. The vertebral fixing system may be configured to receive a rod and may be capable of connecting thereto. The connecting part may have a plurality of connecting members, where at least one of the connecting members includes an opening for receiving the anchor and at least one of the connecting members connects to the elongated member.
1. A vertebral fixing system, comprising:
a flexible elongated member having a first portion, a second portion, and an intermediate portion extending between the first portion and the second portion;
a spacer, wherein the flexible elongated member passes through the spacer;
a tightening part engaging the flexible elongated member, wherein the tightening part is configured to secure the flexible elongated member with respect to the spacer; and
wherein one or both of the first portion of the flexible elongated member and the second portion of the flexible elongated member are configured to be wrapped around a bone and inserted into the tightening part, the tightening part configured to cinch the bone toward the tightening part using the flexible elongated member while the spacer maintains a distance between the bone and the tightening part by engaging the tightening part;
wherein the tightening part uses the flexible elongated member to tighten the spacer and tightening part against each other along the flexible elongated member such that the bone, spacer and tightening part are configured to be aligned in a row extending along a medial-lateral axis.
2. The system of claim 1 , further comprising:
a connecting part; and
a bone anchor configured to be inserted through an opening of the connecting part and to engage a bone.
3. The system of claim 1 , wherein the tightening part engages the first portion of the flexible elongated member and the second portion of the flexible elongated member to secure a loop formed by the intermediate portion of the flexible elongated member with respect to the spacer.
4. The system of claim 1 , wherein the tightening part includes:
a one-way catch mechanism; and
a release to allow for adjustment of the flexible elongated member with respect to the bone.
5. The system of claim 1 , wherein the spacer comprises:
a first opening, a second opening, and an extending portion extending between the first opening of the spacer and the second opening of the spacer; and
wherein the spacer receives the flexible elongated member in the first opening of the spacer and the second opening of the spacer.
6. The system of claim 5 , wherein:
the spacer has a lumen; and
the spacer receives the flexible elongated member in the lumen.
7. The system of claim 6 , wherein:
the spacer has a length extending from the first opening of the spacer to the second opening of the spacer;
the lumen has a length equal to the length of the spacer; and
the flexible elongated member extends into a first end of the lumen, along the length of the lumen, and out of a second end of the lumen.
8. The system of claim 6 , wherein: the tightening part has a first passage extending into the tightening part and a second passage intersecting the first passage at an angle.
9. The system of claim 5 , further comprising:
a set screw engaging the tightening part; and
the set screw engaging at least one of the first portion of the flexible elongated member, the second portion of the flexible elongated member and the intermediate portion of the flexible elongated member.
10. The system of claim 1 , wherein the flexible elongated member is configured to be drawn in a direction perpendicular to an axis along which the bone, spacer and tightening part are configured to align.
11. The system of claim 1 , further comprising an additional spacer, wherein:
the spacer and the additional spacer are disposed on opposite sides of the tightening part;
the flexible elongated member extends through the spacer and the additional spacer; and
the tightening part is configured to draw the bone and an additional bone or rod toward each other and a center of the vertebral fixing system using the flexible elongated member.
12. A vertebral fixing system, comprising:
a flexible elongated member having a first portion, a second portion, and an intermediate portion extending between the first portion and the second portion;
a spacer comprising:
an extender portion extending between a first end and a second end; and
a lumen extending through the extender portion to form a first outlet and a second outlet;
wherein the first portion and the second portion of the flexible elongated member extend from the lumen at the first outlet, and the intermediate portion of the flexible elongated member extends from the lumen at the second outlet to form a loop;
a tightening part engaging the flexible elongated member, wherein the tightening part is configured to secure the flexible elongated member with respect to the spacer;
an additional spacer having an additional lumen extending therethrough; and
an additional flexible elongated member extending through the additional lumen;
wherein the tightening part includes an additional passage for receiving the additional flexible elongated member.
13. The system of claim 12 , further comprising a rod extending through the loop, wherein the tightening part is configured to tighten the flexible elongated member around the rod.
14. The system of claim 13 , further comprising an additional rod secured adjacent the additional spacer by the tightening part.
15. The system of claim 12 , wherein the tightening part comprises:
a passage, wherein the first portion and the second portion of the flexible elongated member extend from the spacer and through the passage of the tightening part; and
a tightener part configured to engage and immobilize the flexible elongated member in the passage.
16. The system of claim 15 , wherein:
the first outlet is located in the first end;
the second outlet is located in the second end; and
the tightening part is located proximate the first end.
17. The system of claim 15 , wherein the tightener part comprises a set screw.
18. The system of claim 12 , wherein the tightening part comprises:
a body comprising:
a first lateral side positioned against the spacer;
a second lateral side positioned against the additional spacer; and
a medial surface connecting the first and second lateral sides;
wherein the passage extends from the first lateral side to the medial surface; and
wherein the additional passage extends from the second lateral side to the medial surface.
19. A vertebral fixing system, comprising:
a flexible elongated member having a first portion, a second portion, and an intermediate portion extending between the first portion and the second portion;
a spacer, wherein the flexible elongated member passes through the spacer;
a tightening part engaging the flexible elongated member, wherein the tightening part is configured to secure the flexible elongated member with respect to the spacer;
wherein one or both of the first portion of the flexible elongated member and the second portion of the flexible elongated member are configured to be wrapped around a bone and inserted into the tightening part, the tightening part configured to cinch the bone toward the tightening part using the flexible elongated member while the spacer maintains a distance between the bone and the tightening part by engaging the tightening part; and
wherein:
the spacer and an additional spacer are disposed on opposite sides of the tightening part;
the flexible elongated member extends through the spacer and the additional spacer; and
the tightening part is configured to draw the bone and an additional bone or rod toward each other and a center of the vertebral fixing system using the flexible elongated member.