Transverse connectors
View Patent ↗Devices and methods are disclosed for treating the vertebral column. One embodiment provides a transverse connector for vertebral fixation systems comprising a first connector body comprising a first engaging member for engaging a first elongate member and a first locking member, a second connector body comprising a second engaging member for engaging a second elongate member, and a transverse rod coupled to the first connector body and the second connector body, thereby forming an articulation between a first end of the transverse rod and the first connector body, wherein the first locking member is configured to secure both the articulation and the first elongate member to the first connector body.
1. A transverse connector for vertebral fixation systems comprising:
a first connector body comprising a first engaging member for engaging a first elongate member, and a first locking member;
a second connector body comprising a second engaging member for engaging a second elongate member;
a transverse rod coupled to the first connector body and the second connector body;
a pivot joint disposed on a first end of the transverse rod and configured to couple with the first connector body; and
a pushing member housed in the first connector body, wherein the first locking member is configured to contact the pushing member, and the pushing member is configured to contact the transverse rod, wherein the pushing member is deformable;
wherein in a locked configuration, a side surface of the first locking member pushes the pushing member medially to lock the pivot joint against the first connector body and a bottom surface of the first locking member pushes the first elongate member against the first engaging member.
2. The transverse connector of claim 1 , wherein the first locking member comprises:
a first locking nut with a top surface, a bottom surface, and a side surface, and
a first contacting saddle with a top surface corresponding to the bottom surface of the first locking nut and a bottom surface corresponding to a surface of the first elongate member.
3. The transverse connector of claim 2 , wherein in the locked configuration, the side surface of the first locking nut pushes on the pushing member, the bottom surface of the first locking nut pushes on the top surface of the first contacting saddle, and the bottom surface of the first contacting saddle pushes on the first elongate member.
4. The transverse connector of claim 1 , wherein in a locked position, the side surface of the first locking member pushes against the pushing member to compress a slot.
5. The transverse connector of claim 1 , wherein the pushing member comprises a slot.
6. The transverse connector of claim 5 , wherein the slot extends from the top of the pushing member down to a partial height of the pushing member.
7. The transverse connector of claim 5 , wherein in the locked position, the pushing member partially deforms to provide a spring force to the transverse rod.
8. The transverse connector of claim 1 , further comprising a second locking member, wherein the second locking member is configured to push the second elongate member against the second engaging member.
9. The transverse connector of claim 1 , further comprising a third locking member configured to secure the transverse rod to the second connector body.
10. The transverse connector of claim 1 , wherein the second connector body further comprises a receiving bore configured to receive a projection end of the transverse rod.
11. The transverse connector of claim 10 , wherein the transverse rod can slideably move in and out of the receiving bore along a longitudinal axis of the second connector body.
12. The transverse connector of claim 10 , further comprising a stop configured to prevent the transverse rod from sliding out of the second connector body.
13. The transverse connector of claim 1 , further comprising:
a first coupling surface on a portion of the pivot joint; and
a second coupling surface on a portion of the first connector body;
wherein, when the first and second coupling surfaces are coupled, the transverse rod and the first connector body maintain an angular orientation in relation to each other.
14. The transverse connector of claim 13 , wherein the coupling surfaces comprise teeth.
15. A transverse connector for vertebral fixation systems comprising:
a first connector body comprising a first end for engaging a first elongate member, a first locking member, and a pushing member;
a second connector body comprising a second end for engaging a second elongate member;
a transverse rod, a first end of the transverse rod configured to couple with the first connector body and be retained within the first connector body, a second end of the transverse rod configured to couple with the second connector body and be retained within the second connector body;
wherein the first locking member has a locked position and an unlocked position, wherein in the unlocked position the transverse rod pivots and translates within the first connector body, wherein in the locked position, the first locking member pushes and compresses the pushing member against the transverse rod and the transverse rod pushes against the first connector body to prevent the transverse rod from pivoting and translating within the first connector body, and wherein in the locked position, the first locking member pushes against the first elongate member and the first elongate member pushes against the first end of the first connector body.
16. The transverse connector of claim 15 , wherein the pushing member is deformable.
17. The transverse connector of claim 15 , wherein the pushing member comprises a slot.
18. The transverse connector of claim 17 , wherein the slot extends from the top of the pushing member down to a partial height of the pushing member.
19. The transverse connector of claim 17 , wherein in the locked position, the pushing member partially deforms to provide a spring force to the transverse rod.