Warsaw Orthopedic, Inc.

Sdgi Holdings, Inc.

Rick C Sasso

Robert A Farris

Regis W Haid

Gary S Lindemann

Iain H Kalfas

Stephen M Papadopoulos

Larry Gause

Volker Sonntag

Carlos Eduardo Gil

Mark Christopher Dace

Vincent C Traynelis

Vince Traynelis

A retention system for maintaining a screw to a vertebral plate is described herein. One or more screws extend through apertures within the vertebral plate. A cavity is positioned adjacent to and overlaps into the aperture. A ring is positioned within the cavity and held in position by a cap. The cap attaches to the plate to prevent removal of the ring. The ring is deflectable between a first shape to allow the screw to be inserted and removed from the aperture, and a second shape to prevent screw back-out from the aperture.

Method and apparatus for retaining screw in a plate

Systems and methods of shaping surfaces of vertebral bodies include a reference guide instrument that can be positioned relative to a disc space between vertebral bodies and referenced to the caudally located endplate of the disc space. The reference guide instrument can then be employed to guide preparation instruments to the vertebral bodies in an orientation and spacing referenced to the caudal endplate of the subject disc space to shape vertebral surfaces to receive an implant.

Instruments and techniques for guiding instruments to a spinal column

A retention system for maintaining a screw to a vertebral plate. One or more screws extend through apertures within the vertebral plate. A cavity is positioned adjacent to and overlaps into the aperture. A ring is positioned within the cavity and held in position by a cap. The cap attaches to the plate to prevent removal of the ring. The ring is deflectable between a first shape to allow the screw to be inserted and removed from the aperture, and a second shape to prevent screw back-out from the aperture. A method of using the system is also included and comprises positioning the ring within a cavity in the plate, maintaining the position of the ring to the plate by attaching a cap, inserting a screw through the aperture and attaching the plate to a vertebral member, and positioning the ring over the screw head and preventing the screw from backing-out.

Method and apparatus for retaining screws in a plate

A screw delivery system and method are disclosed for use in a variety of surgical indications. The screw delivery system generally comprises an outer cannula, a guide, and various interventional devices such as bone drill bits and taps as well as an implant driver for inserting a screw. The method disclosed varies by indication, but is ordinarily intended for use as a minimally invasive procedure which is a combination of percutaneous and open techniques wherein a small midline incision is made over a surgical site and the screw delivery system provides a percutaneous portal through an incision distant from the small midline incision over the surgical site.

Screw delivery system and method

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Carmel, IN, United States of America

Rick C Sasso