Transverse connector with cam activated engagers
View Patent ↗An adjustable transverse connector connects orthopedic stabilization rods that may be parallel or skewed in orientation relative to each other The connector may include two sections that are joined together by a fastener. The connector may be adjustable in many ways. The overall length of the connector may be adjustable. The rod openings of the connector may be partially rotatable about a longitudinal axis of the connector. The two sections of the connector may be angulated. The connector may include cam locks that securely attach the connector to the rods. Rotating a cam lock may extend a rod engager into a rod opening. The rod engager may be a portion of the cam lock. The extension of the rod engager into a rod opening may push a rod against a body of the transverse connector to form a frictional engagement between the connector, the rod, and the rod engager.
1. An adjustable transverse connector, comprising:
a first section having a holder and a first fastening system, wherein the first fastening system is configured to couple the first section to a first elongated member of an orthopedic stabilization system;
a second section having a connecting member and a second fastening system, wherein the second fastening system is configured to couple the second section to a second elongated member of the orthopedic stabilization system and wherein a portion of the connecting member of the second section is positioned in the holder of the first section; and
a fastener configured to fix a position of the connecting member of the second section relative to the holder of the first section, wherein the holder of the first section comprises a first opening configured to accept the fastener and a second opening configured to allow adjustment about three degrees of freedom of the first section relative to the second section prior to the position being fixed via the fastener.
2. The adjustable transverse connector of claim 1 , wherein a distance between the first elongated member and the second elongated member of the orthopedic stabilization system is adjustable through positioning the connecting member of the second section relative to the holder of the first section before the fastener is fastened to fix the position of the connecting member of the second section relative to the holder of the first section.
3. The adjustable transverse connector of claim 1 , further comprising a bushing between the connecting member of the second section and the holder of the first section.
4. The adjustable transverse connector of claim 3 , where the fastener comprises a cam mechanism that forces the busing against the connecting member when the cam is engaged.
5. The adjustable transverse connector of claim 1 , further comprising a lining between the connecting member of the second section and the holder of the first section.
6. The adjustable transverse connector of claim 5 , where the fastener comprises a nut that threads to a shaft extending from the lining.
7. The adjustable transverse connector of claim 1 , where the holder of the first section has a threaded opening and wherein the fastener is a setscrew that mates with the threaded opening of the holder.
8. The adjustable transverse connector of claim 1 , wherein the second opening is further configured to accept the portion of the connecting member of the second section.
9. The adjustable transverse connector of claim 1 , wherein the first opening of the holder is a blind hole that does not extend completely through the holder.
10. The adjustable transverse connector of claim 1 , wherein the connecting member of the second section comprises a flat surface.
11. The adjustable transverse connector of claim 1 , wherein the second opening of the holder of the first section has a width or height that is slightly larger than a diameter of the connecting member of the second section.
12. The adjustable transverse connector of claim 11 , wherein the connecting member of the second section comprises a flat surface and wherein the second opening of the holder has a corresponding flat surface.
13. The adjustable transverse connector of claim 1 , wherein the connecting member of the second section comprises a countersunk opening.
14. An orthopedic stabilization system, comprising:
a first elongated member;
a second elongated member; and
an adjustable transverse connector, comprising:
a first section having a holder and a first fastening system, wherein the first fastening system is configured to couple the first section of the adjustable transverse connector to the first elongated member;
a second section having a connecting member and a second fastening system, wherein the second fastening system is configured to couple the second section of the adjustable transverse connector to the second elongated member, wherein a portion of the connecting member of the second section is positioned in the holder of the first section, wherein the holder of the first section is configured to allow adjustment about three degrees of freedom of the first section relative to the second section, and wherein a distance between the first elongated member and the second elongated member is adjustable through positioning the connecting member of the second section relative to the holder of the first section; and
a fastener configured to fix a position of the connecting member of the second section relative to the holder of the first section.
15. The orthopedic stabilization system of claim 14 , wherein the adjustable transverse connector further comprises a lining, a bushing, or a sleeve between the connecting member of the second section and the holder of the first section.
16. The orthopedic stabilization system of claim 14 , wherein the fastener comprises a cam mechanism that forces the busing against the connecting member when the cam mechanism is engaged, a nut that threads to a shaft extending from the lining, or a setscrew that mates with a threaded opening of the holder.
17. The orthopedic stabilization system of claim 14 , wherein the holder of the first section comprises a first opening configured to accept the fastener and a second opening configured to accept the connecting member of the second section, wherein the connecting member of the second section comprises a flat surface, wherein the second opening of the holder has a corresponding flat surface, and wherein fixing the position of the connecting member of the second section relative to the holder of the first section inhibits axial, angular, and rotational motion of the first section relative to the second section.
18. The orthopedic stabilization system of claim 14 , wherein the holder of the first section comprises a first opening configured to accept the fastener and a second opening configured to accept the connecting member of the second section, wherein the second opening has a width that is slightly larger than a diameter of the connecting member, allowing the connecting member to slide laterally within the second opening of the holder before the position of the connecting member of the second section is fixed relative to the holder of the first section.
19. An adjustable transverse connector, comprising:
a first section having a body, a holder at a first end of the body, a first elongated member opening at a second end of the body, and a first fastening system positioned between the first end and the second end of the body and extending into the first elongated member opening, wherein the holder has a vertical opening and a lateral opening;
at least one second section having a shaft, a second elongated member opening, and a second fastening system positioned between the shaft and the second elongate member opening and extending into the second elongate member opening, wherein the lateral opening of the holder of the first section has a width or height that accommodates or is slightly larger than a diameter of the shaft, wherein the lateral opening of the holder is configured to allow adjustment about three degrees of freedom of the first section relative to the second section; and
a fastener that mates with the vertical opening of the holder to fix a position of the shaft of the second section relative to the holder of the first section.
20. The adjustable transverse connector of claim 19 , further comprises a lining, a bushing, or a sleeve that fits inside the vertical opening of the holder of the first section and that contacts a portion of the shaft when the shaft engages the first section through the lateral opening, wherein the fastener comprises a cam mechanism that forces the busing against the shaft when the cam mechanism is engaged, a nut that threads to a shaft extending from the lining, or a setscrew that mates with the vertical opening of the holder.