Patent ID: 7722570
Filing Date: 2010-05-25
Classification: A61B

Abstract:
1. A seal for laparoscopic port comprising: a base adapted to engage a cannula, the base including an axial aperture for a surgical instrument and a plurality of guides; a multiplicity of jaws mounted on the base, the jaws being moveable radially along the plurality of guides with respect to the aperture between an open position wherein the shaft of the surgical instrument may pass freely and the closed position wherein the jaws engage said shaft and provide a restraining force restraining radial movement of the shaft, and the multiplicity of jaws each comprising a follower member extending therefrom; an actuator, the actuator having a plurality of guideways formed therein, the follower member of each of the multiplicity of jaws being received in a corresponding one of the plurality of guideways, the actuator rotatable to urge the jaws to move between said open position and said closed position; and a diaphragm adapted to contact the shaft of a surgical instrument extending through the aperture; wherein the diaphragm includes a lip, each jaw including a radially outwardly facing portion adapted to engage the lip so that the aperture of the diaphragm is forced to open as the jaws move to an open position.