Sternal closure cerclage, plate implant and instrumentation
View Patent ↗A closure system may secure a first bone portion to a second bone portion. The closure system may include a bracket, a band and a tensioning device. The bracket may include a first portion adapted to engage the first bone portion and a second portion adapted to engage the second bone portion. The band may engage the bracket and may be adapted to be looped around the first and second bone portions. The tensioning device may include a body and a threaded member. The threaded member may be received in the body and may engage the band such that rotation of the threaded member relative to the body moves a first end of the band relative to a second end of the band.
1. A closure system for securing a first bone portion to a second bone portion; the closure system comprising:
a bracket including a first portion adapted to engage the first bone portion and a second portion adapted to engage the second bone portion;
a band engaging the bracket and adapted to be looped around the first and second bone portions; and
a tensioning device including a body and a threaded member, the threaded member received in the body and engaging the band such that rotation of the threaded member relative to the body moves a first end of the band relative to a second end of the band, wherein the tensioning device is removable from the bracket and the band without releasing tension of the band.
2. The closure system of claim 1 , wherein the threaded member threadably engages the band.
3. The closure system of claim 1 , wherein the body of the tensioning device fixedly engages the first end of the band.
4. The closure system of claim 1 , wherein the bracket fixedly engages the first end of the band.
5. The closure system of claim 1 , wherein the band includes a plurality of apertures configured to receive a thread of the threaded member.
6. The closure system of claim 1 , further comprising a cam member that is movable relative to the bracket between a first position allowing movement of the band relative to the bracket and a second position restricting movement of the band relative to the bracket.
7. The closure system of claim 1 , wherein the threaded member includes a threaded shaft including a slot configured to receive the band so that the band wraps around the threaded shaft during rotation of the of the threaded member relative to the body.
8. The closure system of claim 1 , wherein the body includes a plurality of guide apertures that are axially aligned with apertures in the bracket.
9. A closure system for securing a first bone portion to a second bone portion, the closure system comprising:
a bracket adapted to engage at least one of the first and second bone portions;
a band engaging the bracket and adapted to be looped around the first and second bone portions; and
a tensioning device including a base and a tensioning member, the tensioning member rotatably engaging the base and engaging the band such that rotation of the tensioning member relative to the base tensions the band relative to the first and second bone portions,
wherein the tensioning member twists the band relative to the bracket,
wherein the tensioning device is removable from the bracket and the band without releasing tension of the band.
10. The closure system of claim 9 , wherein a first end of the band is fixed relative to the bracket and a second end of the band moves relative to the first end of the band as the tensioning member rotates relative to the body.
11. The closure system of claim 9 , wherein the first and second ends of the band move relative to the bracket as the tensioning member rotates relative to the body.
12. The closure system of claim 9 , wherein the band includes a plurality of apertures configured to receive a thread of the tensioning member.
13. The closure system of claim 9 , wherein the tensioning member includes a threaded member.
14. The closure system of claim 13 , wherein the tensioning member threadably engages the band.
15. The closure system of claim 9 , further comprising a cam member that is movable relative to the bracket between a first position allowing movement of the band relative to the bracket and a second position restricting movement of the band relative to the bracket.
16. A closure system or securing a first bone portion to a second bone portion; the closure system comprising:
a bracket adapted to engage at least one of the first and second bone portions;
a band engaging the bracket and adapted to be looped around the first and second bone portions; and
a tensioning device including a base and a tensioning member, the tensioning member rotatably engaging the base and engaging the band such that rotation of the tensioning member relative to the base tensions the band relative to the first and second bone portions,
wherein the tensioning member includes a threaded shaft including a slot configured to receive the band so that the band wraps around the threaded shaft during rotation of the of the tensioning member relative to the base.
17. The closure system of claim 16 , wherein the tensioning member threadably engages the band.
18. The closure system of claim 16 , further comprising a cam member that is movable relative to the bracket between a first position allowing movement of the band relative to the bracket and a second position restricting movement of the band relative to the bracket.
19. The closure system of claim 16 , wherein a first end of the band is fixed relative to the bracket and a second end of the band moves relative to the first end of the band as the tensioning member rotates relative to the body.
20. The closure system of claim 16 , wherein the first and second ends of the band move relative to the bracket as the tensioning member rotates relative to the body.
21. The closure system of claim 16 , wherein the band includes a plurality of apertures configured to receive a thread of the tensioning member.
22. The closure system of claim 16 , wherein the tensioning device is removable from the bracket and the band without releasing tension of the band.
23. A closure system for securing a first bone portion to a second bone portion, the closure system comprising:
a bracket adapted to engage at least one of the first and second bone portions;
a band engaging the bracket and adapted to be looped around the first and second bone portions; and
a tensioning device including a base and a tensioning member, the tensioning member rotatably engaging the base and engaging the band such that rotation of the tensioning member relative to the base tensions the band relative to the first and second bone portions,
wherein the base includes a plurality of guide apertures that are axially aligned with apertures in the bracket.
24. The closure system of claim 23 , wherein the tensioning member includes a threaded member.
25. The closure system of claim 24 , wherein the tensioning member threadably engages the band.
26. The closure system of claim 23 , further comprising a cam member that is movable relative to the bracket between a first position allowing movement of the band relative to the bracket and a second position restricting movement of the band relative to the bracket.
27. The closure system of claim 23 , wherein a first end of the band is fixed relative to the bracket and a second end of the band moves relative to the first end of the band as the tensioning member rotates relative to the body.
28. The closure system of claim 23 , wherein the first and second ends of the band move relative to the bracket as the tensioning member rotates relative to the body.
29. The closure system of claim 23 , wherein the band includes a plurality of apertures configured to receive a thread of the tensioning member.
30. The closure system of claim 23 , wherein the tensioning device is removable from the bracket and the band without releasing tension of the band.