SHIELDED SEPTUM TROCAR SEAL

摘要

The invention is directed to a trocar assembly having a channel defined along an elongate axis, the trocar assembly comprising a septum seal (60) disposed in the channel including a seal tip (60a) having a proximal facing surface, the seal tip including portions defining an orifice; and a septum shield (70) including a tubular member having a proximal end and a distal end, and a plurality of blades or leaflets protruding distally from the distal end of the tubular member, the septum shield being placed inside the septum seal such that the blades engage the proximal facing surface of the seal tip. The septum shield operates to reduce the drag force and to minimize axial movement of the septum shield and the instrument during insertion and removal of the instrument through the septum seal.