Patent ID: 11931078
Assignee: ANZA INNOVATIONS, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A polyaxial anchor assembly comprising:
a bone anchor including a first end comprising a head having a spherical outer surface and a recess formed within the head, a second end, a longitudinal axis extending through the first and second ends, and a neck positioned along the longitudinal axis between the head and the second end;
a receiver having a first receiver end, a second receiver end, and a receiver axis extending through the first receiver end and the second receiver end, the first receiver end comprising a socket cavity configured to receive at least a portion of the head, a socket aperture, a socket cavity slot extending from the socket cavity and configured to receive at least a portion of the neck, and an interference element extending over a portion of the socket aperture;
wherein the interference element is configured to prevent translation-only insertion of the head into the socket cavity from any initial angular orientation of the bone anchor relative to the receiver; and
wherein the head is configured to be captured within the socket cavity and the bone anchor is pivotable about the socket cavity upon rotation of the bone anchor in a first rotation direction and subsequent rotation of the bone anchor in a second rotation direction different from the first rotation direction.