Importance

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Abstract

A surgical tissue morcellator (10) for percutaneously morcellating and debulking tissue during a minimally invasive, endoscopic surgical procedure. In an insertion configuration, the morcellator includes an outer cutting sheath (11) and an insertion member (15) inserted therethrough and positioned relative thereto via a connector (20). The connector includes an adaptor (18) positioned at the proximal portion (13) of the outer cutting sheath. The adaptor includes a lock member (22) such as a pin extending radially into the bore (19) of the adaptor. A second lock member (23) in the form of a T-shaped slot is formed in the surface of the insertion member to receive and position the pin therein. In a morcellation configuration, the morcellator includes a handle (24) that is positioned in the bore of the adaptor. A tissue fixation member (26) is inserted through the handle and outer sheath passages (25, 14) and includes a distal portion (27) with a helical coil (29) that extends from the distal cutting end (12) of the outer cutting sheath for affixation to a tissue mass (50). The tissue fixation member also includes a plurality (44) of helical grooves (30) of which a plurality (45) of projections (32) extend from the handle and into the grooves. These projections are positioned on the ends of a plurality (49) of rocker arms (33) which are pivotally mounted in the wall (37) of the handle. The engagement projections are extended selectively into and out of the passage of the handle via a retainer ring (43) that longitudinally slides on the neck portion (65) of the handle.

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First Claim