Surgical instrument and methods of use
AssigneeWarsaw Orthopedic, Inc.
InventorsAdriaan J. Kuyler, Benjamin D. Cowan
Life of this patent
Estimating the term…
Abstract
A spinal implant includes a distal portion configured for penetrating tissue. A proximal portion includes a drive surface, a guide surface and a retention surface. The surfaces being disposed in a serial configuration. The retention surface is engageable with a surface of a surgical instrument to define a retention interface. Instruments, systems, constructs and methods are disclosed.
Claims21
1-20. (canceled)
An implant comprising a shaft extending along a longitudinal axis between opposite proximal and distal ends, the proximal end including a head, the head defining a socket, the socket including a first cavity, a second cavity and a third cavity, the second cavity being disposed between the first cavity and the third cavity, the socket including a gap between the first cavity and the second cavity, the gap defining a maximum diameter of the socket.
An implant comprising a non-cannulated shaft extending along a longitudinal axis between opposite proximal and distal ends, the proximal end including a head, the head defining a socket, the socket including a first cavity, a second cavity, a third cavity and a fourth cavity, the second cavity being disposed between the first cavity and the third cavity, the third cavity being disposed between the second cavity and the fourth cavity, the socket including a gap between the first cavity and the second cavity, the gap defining a maximum diameter of the socket.
A bone fastener comprising a non-cannulated shaft extending along a longitudinal axis between opposite proximal and distal ends, the distal end being threaded, the proximal end including a head, the head defining a socket, the socket including a first cavity, a second cavity, a third cavity and a fourth cavity, the second cavity being disposed between the first cavity and the third cavity, the third cavity being disposed between the second cavity and the fourth cavity, the socket including a gap between the first cavity and the second cavity, the gap defining a maximum diameter of the socket,
- wherein the fourth cavity is tapered from the third cavity to a distalmost portion of the fourth cavity,
- wherein the fourth cavity is spaced apart from the distal end,
- wherein the third cavity is tapered from the second cavity to the fourth cavity, and
- wherein the second cavity is tapered from the gap to the third cavity.
Dependencies are inferred from the claim text.