Abstract: In one aspect, an instrument for placing a graft, implant and/or graft material at a target site for enhancing posterolateral fusion between two or more vertebrae is provided which includes a housing and an actuable trigger associated with the housing. A curved rigid access tube extends from the housing, the access tube terminating at a distal end. A sheath is disposed about, and moveable relative to the access tube, and a transmission is disposed in the housing. In an initial state, the sheath extends distally past the distal end of the access tube, a space being defined within the sheath distally of the distal end of the access tube to accommodate the graft, implant and/or graft material. The transmission is configured to cause an incremental displacement of the sheath relative to the distal end of the access tube upon an actuation of the trigger.

Abstract: In one aspect, an instrument for placing a graft, implant and/or graft material at a target site for enhancing posterolateral fusion between two or more vertebrae is provided which includes a housing and an actuable trigger associated with the housing. A curved rigid access tube extends from the housing, the access tube terminating at a distal end. A sheath is disposed about, and moveable relative to the access tube, and a transmission is disposed in the housing. In an initial state, the sheath extends distally past the distal end of the access tube, a space being defined within the sheath distally of the distal end of the access tube to accommodate the graft, implant and/or graft material. The transmission is configured to cause an incremental displacement of the sheath relative to the distal end of the access tube upon an actuation of the trigger.

Abstract: A surgical retention port particularly useful as an arthroscopic port for shoulder surgery is provided. The surgical retention port has a long pointed instrument such as a trocar or obturator, an inner cannula extending around the pointed instrument, a plurality of rotatable fingers coupled to the inner cannula, and an outer cannula extending around the inner cannula. In one embodiment of the invention, the inner cannula and long pointed instrument are keyed such that rotation of the long pointed instrument can effect rotational movement of the inner cannula. Rotation of the inner cannula in turn causes the rotation of the fingers from a first position where the fingers assume a collapsed configuration to a second position where the fingers assume an extended or open configuration.

Abstract: A surgical retention port particularly useful as an arthroscopic port for shoulder surgery is provided. The surgical retention port has an inner cannula defining a throughbore, a plurality of rotatable fingers coupled to the inner cannula, and an outer cannula extending around the inner cannula. Rotation of the inner cannula relative to the outer cannula causes the rotation of the fingers from a first position where the fingers assume a collapsed configuration to a second position where the fingers assume an extended or open configuration.

Abstract: A surgical retention port particularly useful as an arthroscopic port for shoulder surgery is provided. The surgical retention port has an inner cannula defining a throughbore, a plurality of rotatable fingers coupled to the inner cannula, and an outer cannula extending around the inner cannula. Rotation of the inner cannula relative to the outer cannula causes the rotation of the fingers from a first position where the fingers assume a collapsed configuration to a second position where the fingers assume an extended or open configuration.

Abstract: A surgical retention port particularly useful as an arthroscopic port for shoulder surgery is provided. The surgical retention port has a long pointed instrument such as a trocar or obturator, an inner cannula extending around the pointed instrument, a plurality of rotatable fingers coupled to the inner cannula, and an outer cannula extending around the inner cannula. In one embodiment of the invention, the inner cannula and long pointed instrument are keyed such that rotation of the long pointed instrument can effect rotational movement of the inner cannula. Rotation of the inner cannula in turn causes the rotation of the fingers from a first position where the fingers assume a collapsed configuration to a second position where the fingers assume an extended or open configuration.

Abstract: A surgical retention port particularly useful as an arthroscopic port for shoulder surgery is provided. The surgical retention port has an inner cannula defining a throughbore, a plurality of rotatable fingers coupled to the inner cannula, and an outer cannula extending around the inner cannula. Rotation of the inner cannula relative to the outer cannula causes the rotation of the fingers from a first position where the fingers assume a collapsed configuration to a second position where the fingers assume an extended or open configuration.