Polyaxial locking interface
AssigneeCoorstek Medical LLC
InventorJeffery D. Arnett
Life of this patent
Estimating the term…
Abstract
An interlocking interface retains a screw head in a socket to prevent migration of the screw head out of the socket, or to lock the screw head in the socket. The interlocking interface may retain or lock the screw at various polyaxial angles with respect to the socket. The screw head includes external corrugations. The socket includes an internal corrugated structure which interlocks with the external corrugations of the screw head when the screw is at various polyaxial angles with respect to the socket. A counterbore may be adjacent either or both ends of the socket.
Claims33
A system for a medical device component, the system comprising:
- a fastener having a head;
- a socket for receiving the fastener head in a locking connection, the socket having a first end, a second end and a longitudinal socket axis extending between the first and the second end, the socket further having an internal corrugation extending between the first and the second end;
- wherein the socket has a first socket portion adjacent the first end, the first socket portion having multiple sides and multiple corners;
- and
- wherein the socket has a second socket portion between the first socket portion and the second end, wherein the second socket portion is circular.
A system for a medical device component, the system comprising:
- a fastener having a head;
- a socket for receiving the fastener head in a locking connection, the socket having a first end, a second end and a longitudinal socket axis extending between the first and the second end, the socket further having an internal corrugation extending between the first and the second end;
- and
- a first counterbore formed immediately adjacent to and in communication with the socket.
A system for a medical device component, the system comprising:
- a fastener having a head;
- a socket for receiving the fastener head in a locking connection, the socket having a first end, a second end and a longitudinal socket axis extending between the first and the second end, the socket further having an internal corrugation extending between the first and the second end;
- wherein the socket has a first socket portion and a second socket portion, the second socket portion having a different shape than the first socket portion;
- and
- a first counterbore formed immediately adjacent to and in communication with the socket.
Dependencies are inferred from the claim text.