Patent ID: 6676639
Filing Date: 2004-01-13
Classification: A61B

Abstract:
A device intended to penetrate a body wall in endoscopic surgery to establish a passageway allowing insertion therethrough of surgical instruments, and comprising a tubular sleeve, which in use extends through said passageway and has one proximal and one distal end, wherein the distal end is arranged to be contracted such that its assumes transverse dimensions not exceeding the surgical orifice to allow said end to be introduced into said orifice, and thereafter to expand when applied in position such that it assumes downwards gradually increasing dimensions transversely exceeding the dimensions of the device at the place of the surgical orifice, whereby a funnel-shaped distal end is formed, and wherein at least the distal end is made from a resilient material which in itself tends to assume the expanded condition and wherein the distal end is arranged to be maintained in a contracted condition by an obturator to allow insertion of said distal end and by further insertion of the obturator release the distal end to expand, said obturator arranged to be extracted from the device from the proximal end.