Patent ID: 6497687
Filing Date: 2002-12-24
Classification: A61B

Abstract:
A surgical device, comprising:a handle configured to be gripped; a penetrator having a main axis and being attached to said handle; a cutting blade located at a distal end of said penetrator; a tissue expander expanded at a distal end of the penetrator for expanding a tissue cut by said cutting blade; an insufflation passageway con figured to discharge a pressurized fluid while said cutting blade is inside a body tissue and to transport said pressurized fluid to the body tissue when said cutting blade substantially penetrates the body tissue; and a guard movable with respect to said tissue expander and configured to selectively expose said cutting blade; wherein said guard has an apex such that an angle subscribed in the apex of the guard is smaller than an angle subscribed by said blade for progressively covering said blade during deployment of the penetrator.