Abstract: A spinal implant system comprises a plurality of alternate first members including at least one first member. The first member comprises an inner surface defining an implant cavity, and a first part being non-rotatable relative to the inner surface and a second part movable relative to the first part. A second member includes a mating element engageable with a first member such that the second member is interchangeable with the plurality of first members. The first member is rotatable relative to the second member in a first plane of a body and the second part defines a portion of the implant cavity and is movable relative to the first part in a second plane of the body. Fasteners, instruments and methods are disclosed.

Abstract: An interbody implant is provided. The interbody implant includes a body having a cavity configured to retain material deposited in the cavity. The cavity has an opening defining a passageway in communication with the cavity. The implant further includes a membrane disposed about the opening of the cavity having a first configuration covering the opening and a second configuration such that the membrane exposes the passageway in communication with the cavity.

Abstract: An orthopedic bone fixation device including an anchor member having a cavity and an insert member. The anchor member retains the insert member at least partially or entirely in the cavity. The insert member has an insert aperture for accommodating part of a screwdriver or other device.

Abstract: An orthopedic bone fixation device is disclosed that includes, in one embodiment, an anchor member having a cavity and an insert member. The anchor member retains the insert member at least partially or entirely in the cavity. The insert member has an insert aperture for accommodating part of a screwdriver or other device.

Abstract: The present application is directed to tools that may generally deflect a locking ring away from the fastener, and also engage a head of the fastener to rotate and remove the fastener from a vertebral member. The tools may include a first member that contacts and moves the locking ring away from the aperture 101. A second member engages the head and transfers torque to the fastener for removal from the vertebral member.

Abstract: A plating system and method include a bone plate with at least a first vertebral engaging portion and a second vertebral engaging portion connected by flexible intermediate portions to permit translation of the vertebrae to which the bone plate is attached. The bone plate may further include a guide assembly extending between the vertebral engaging portions that permits at least uni-directional translation while enhancing resistance of the bone plate to bending forces.

Abstract: A plating system and method include a bone plate with at least a first hole therethrough between an upper surface and a lower surface of the bone plate to receive an anchor for engaging the plate to a bony segment. The system and method also include a retaining member engageable to the bone plate that includes a head with an outer perimeter having a ramped or camming portion that is positionable in contact with the anchor to prevent the anchor backing out of the first hole.

Abstract: Devices and methods for maintaining the position of a screw relative to a vertebral plate. The device includes a plate having one or more screw holes each sized to receive a screw for attaching the plate to the vertebral member(s). A cap may be movably coupled to the plate. In one position the cap may overlap into the screw hole for receiving the bone screw. The bone screw may be inserted into the screw hole and mounted into the bone with the cap overlapping into the screw hole. In one embodiment the screw moves past the cap and may be captured beyond the cap preventing back-out of the screw. The cap may also be moved to a second position to allow for removal of the bone screw from the vertebral member.

Abstract: 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.

Abstract: A linear peristaltic pump of the type for removable engagement of a portion of a flexible tubing and having a plurality of sequentially actuated pumping elements which act along the engaged portion of the flexible tubing, with the pumping elements reciprocated in a first direction to collapse adjacent segments of the tubing and then in a second direction to release the adjacent segments of the tubing, each pumping element having a flat pumping surface reciprocated in a sequence so that fluid in the flexible tubing is moved along the engaged portion of the tubing. The linear peristaltic pump is provided with a plurality of opposed pairs of pivotable reshaping fingers, with each pair of the reshaping fingers interposed adjacent to one of the pumping elements in sequence along the engaged portion of the flexible tubing.