| 摘要 |
An ultrasonic surgical clamp coagulator apparatus is configured to effect cutting, coagulation, and clamping of tissue by cooperation of a clamping mechanism of the apparatus with an associated ultrasonic end-effector. In order to limit the force with which tissue is clamped between a clamp arm of the clamping mechanism and the end-effector, the clamping mechanism includes a force-limiting spring which operatively connects an operating lever of the apparatus and components of the clamp drive mechanism. The force-limiting spring is preferably pre-loaded so that the interconnection of the associated components is desirably "stiff", thus providing a user with good tactile feedback during operation of the clamping mechanism. At least one travel stop is preferably provided on the apparatus housing for limiting movement of the operating lever after a predetermined degree of relative movement of the operating components in opposition to the force-limiting spring. <IMAGE> |
