Variable angle connection assembly

摘要

In a preferred embodiment, the present invention provides a connection assembly that can be used to securely connect a spinal implant to a bone anchor. In particular, the present invention preferably provides a variable angle connection assembly that is able to securely connect the spinal implant to the anchors even when there is a variance in the angle and position of the anchors with respect to the spinal implant. Furthermore, in a preferred embodiment, the present invention provides a connection assembly that will not inadvertently lock the components of the connection assembly preventing the relative movement of the components.

主权项

1. A connection assembly for connecting a spinal implant to an anchor, the connection assembly comprising:
a housing member having a first end and a second end, the housing member having an aperture proximate the first end for receiving a portion of a spinal implant and a channel extending from the second end towards the first end, the channel is in fluid connection with the aperture and oriented generally transversely to the aperture; a receiving member having a first end and a second end, the receiving member having an aperture proximate the first end for receiving a portion of an anchor and a lumen extending from the second end towards the first end, the lumen is in fluid communication with the aperture and oriented generally transversely to the aperture, the second end of the receiving member is received in the channel so that the receiving member is rotatably and translatably connected to the housing member; a cap member having a lumen and an extension portion, wherein the channel of the housing member receives the extension portion of the cap member, and an annular member having a first face and a second face, the annular member positioned over the receiving member and received in the channel, wherein the receiving member has a rim portion having at least one ridge proximate the second end, wherein the second face of the annular member has at least one ridge, and wherein the at least one ridge on the rim portion faces the at least one ridge on the second face of the annular member.