Abstract: The present invention relates to a tissue collection system. The system includes an outer housing, a first cylindrical fenestrated member within and immovable relative to the outer housing, a second cylindrical fenestrated member defining an inner tissue collection chamber and being positioned within and rotatable relative to the first cylindrical fenestrated member, a plunger axially movable within the second fenestrated member, an elongate rod being connected to the plunger, and one or more stop units attached to the outer housing. The present invention also relates to methods for separating components of a tissue sample using a system according to the present invention.

Abstract: The present invention relates to a tissue collection system. The system includes an outer housing, a first cylindrical fenestrated member within and immovable relative to the outer housing, a second cylindrical fenestrated member defining an inner tissue collection chamber and being positioned within and rotatable relative to the first cylindrical fenestrated member, a plunger axially movable within the second fenestrated member, an elongate rod being connected to the plunger, and one or more stop units attached to the outer housing. The present invention also relates to methods for separating components of a tissue sample using a system according to the present invention.

Abstract: The present invention is directed to a circular anastomosis surgical stapler and methods of use. The circular anastomosis surgical stapler includes an operator control assembly, a tubular shaft having a distal end that is associated with a head portion, and an actuating head portion. The actuating head portion includes a detachable anvil portion with an axially extending stem portion. The anvil portion is engagable with the remainder of the head portion, which receives an array of staples. The head portion also includes an associated stapling portion with a stapling mechanism for firing an array of staples against the anvil portion. The anvil portion and the head portion matingly engage along a mating edge. The mating edge is defined by locations around the stem portion spaced from a particular position on the axis of the stem portion at axially and/or radially varying distances.