Patent ID: 8696671
Filing Date: 2014-04-15
Classification: A61B,A61M

Abstract:
1. A tissue excision device comprising: an outer tubular member having a proximal end; an inner tubular member slidingly received within the outer tubular member, wherein the inner tubular member has a central, longitudinal axis, a proximal end, and a distal end including an upper member and a lower member; and a housing moveably coupled to the proximal end of the outer tubular member and fixedly coupled to the proximal end of the inner tubular member, wherein the housing is coupled to a trigger configured to move relative to the housing to move the outer tubular member relative to the inner tubular member along the central, longitudinal axis; wherein the device has an opened position in which the distal end is fully extended from the outer tubular member, and a closed position in which a most-distal tip of a distal end of at least one of the upper member and the lower member is disposed within the outer tubular member; wherein the upper member is biased away from the lower member and is disposed at an open angle θ wherein the upper member has a cutting end adapted to cut tissue when the upper member is moved along the central, longitudinal axis, the cutting end of the upper member comprising a curved outer surface that extends radially and distally toward the central, longitudinal axis to form an angle between the curved outer surface and the central, longitudinal axis ranging from about 10° to about 50° when the device is in the opened position and about 15° to about 80° when the device is in the closed position; and a plunger slidingly received within the inner tubular member.