Transection device

Abstract

A transection device including a curved tubular body extending from a proximal end to a distal end, having a wall and an internal chamber and a receiving chamber. The receiving chamber may be defined by the distal end and an opening in the wall, and said distal end may have a surface facing the receiving chamber and an outside surface comprising an elongated region. A protrusion may extend from the distal end towards the center of said opening. A cutting member may be positioned within said curved tubular body and may be moveable between an initial position and an extended position and at least a portion of the cutting member may extend into the receiving chamber. A depressible member may be configured to move the cutting member and a compression member may extend between the cutting member and the depressible member. Some embodiments may utilize an electrosurgical cutting member.

What is claimed is: 
     
         1 . A transection device comprising:
 a curved tubular body extending from a proximal end to a distal end, said curved tubular body having a wall and an internal chamber extending between the proximal and distal ends, wherein said curved tubular body has a receiving chamber proximate to the distal end, said receiving chamber defined by the distal end and an opening in the wall, wherein said distal end comprises at least one protrusion extending toward the center of said opening;   a cutting member positioned within said curved tubular body and moveable between an initial position within the curved tubular body to an extended position wherein at least a portion of the cutting member extends into the receiving chamber;   a depressible member extending from the proximal end, said depressible member configured to move the cutting member between an initial position and an extended position, wherein the depressible member has a contact surface positioned outside the curved tubular body, and a force applying surface within the curved tubular body;   wherein the cutting member is rotatable to an angle relative to the axis of a vessel, duct, or tissue to be transected; and   wherein said angle corresponds to an alignment of an angle setting on the contact surface of the depressible member and a marking on the proximal end of the tubular body; and,   a compression member extending between the cutting member and the depressible member, wherein the force applying surface contacts the compression member which in turn contacts the cutting member.   
     
     
         2 . A transection device comprising:
 a curved tubular body extending from a proximal end to a distal end, said curved tubular body having a wall and an internal chamber extending between the proximal and distal ends, wherein said curved tubular body has a receiving chamber proximate to the distal end, said receiving chamber defined by the distal end and an opening in the wall, wherein said distal end has a surface facing the receiving chamber and an outside surface comprising an elongated region and wherein said distal end comprises at least one protrusion extending toward the center of said opening;   a cutting member positioned within said curved tubular body and moveable between an initial position within the curved tubular body to an extended position wherein at least a portion of the cutting member extends into the receiving chamber;   a depressible member extending from the proximal end, said depressible member configured to move the cutting member between an initial position and an extended position, wherein the depressible member has a contact surface positioned outside the curved tubular body, and a force applying surface within the curved tubular body; and,   a compression member extending between the cutting member and the depressible member, wherein the force applying surface contacts the compression member which in turn contacts the cutting member.   
     
     
         3 . The transection device of  claim 2 , wherein the elongated region is tapered. 
     
     
         4 . The transection device of  claim 2 , wherein the elongated region is curved.