Patent ID: 8083804
Filing Date: 2011-12-27
Classification: A61B

Abstract:
1. An apparatus for performing a surgical anastomosis, comprising: a tubular sleeve defining an axial lumen therethrough; a positioning tube defining an axial lumen therethrough, the positioning tube being configured and adapted to be slidably received within the axial lumen of the tubular sleeve; an expansion assembly having a tubular body and an expandable tip operatively coupled to a distal end thereof, the expandable tip having a retracted position in which the expandable tip can pass through the axial lumen of the positioning tube and an expanded position in which the expandable tip can not pass through the axial lumen of the positioning tube; and an anchoring assembly including: a flange member having an expandable annular body and a head portion integrally coupled to the expandable annular body and protruding laterally therefrom, the annular body defining a passage, the passage extending through the head portion and the annular body, the head portion defining proximal and distal end surfaces, the proximal end surface including a plurality of protuberances formed thereon and extending proximally therefrom, the annular body of the anchoring assembly comprises at least a pair of diametrically opposed slots formed therein, wherein the annular body is expandable along the pair of slots, the slots extend through a proximal terminal end of the annular body and terminate at a distance spaced from the head portion; and a locking member configured and dimensioned to be received in the passage of the annular body, the locking member defining a lumen therethrough, the locking member being configured for operable engagement with the positioning tube such that the positioning tube is movable in a distal direction to drive the locking member distally with respect to the annular body, and the locking member being selectively releasable and separable from the positioning tube; wherein movement of the locking member into the passage of the annular body induces radial expansion of the annular body of the flange member between an unexpanded configuration and a radially expanded configuration in which the annular body flares radially outward in a proximal direction away from the head portion, and wherein the locking member is maintained in the annular body to maintain the annular body in the expanded configuration when the locking member is released from the positioning tube and separated from the positioning tube.