Low Profile Dual Locking Fixation System and Offset Anchor Member
AssigneePioneer Surgical Technology, Inc.
InventorsMatthew P. Gephart, Troy D. Knapp, Phillip J. Berman
Life of this patent
Estimating the term…
Abstract
A coupling device for securing an elongate member to the spine is provided. The coupling device comprises a compressible inner member that secures an anchor member therein when the inner member is axially shifted within an outer member. The elongate member is retained within the device by an axially inserted locking member, and may be secured independently of the anchor member. The coupling device and anchor may be configured to provide increased angulation of the anchor with respect to the coupling device. For instance, anchor member may have an offset head portion in order to provide normal pivoting of the coupling device when the anchor is attached to bone at an angle.
Claims5
An assembly for securing an elongate member to the spine, the assembly comprising:
- an anchor member having a head portion with a center and at least one curved surface portion and an attachment portion coupled to the head portion;
- an insert member with a lower portion having walls forming a cavity for receiving the anchor head portion, the walls configured to shift against the anchor head in order to fix the anchor head at an angular position with respect to the insert member;
- and
- an outer member having an inner surface defining an inner space for receiving the insert member, the inner surface having at least a portion configured to shift the insert member lower portion walls against the anchor head;
- wherein the anchor attachment portion has a central axis and the center of the anchor head portion is offset from the attachment portion central axis.
Dependencies are inferred from the claim text.