| 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 feedbac k 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. |
