Ultrasonic surgical shears and method for sealing a blood vessel using same

摘要

An ultrasonic surgical shears includes an ultrasonic surgical blade, a clamping arm operable to open and close toward the blade, and a tissue pad attached to the clamping arm. A method for sealing a blood vessel of a patient includes obtaining an ultrasonic surgical shears and positioning the blood vessel between the blade and the tissue pad. The clamping arm is operated to exert an average coaptation pressure on the blood vessel between and including 60 psi and 210 psi. The blade is ultrasonically vibrated to transect and seal the blood vessel.

主权项

1. A method for sealing a blood vessel of a patient comprising the steps of:
a) obtaining an ultrasonic surgical shears including an ultrasonic surgical blade, a clamping arm operable to open and close toward the blade, a tissue pad attached to the clamping arm, wherein the blade and tissue pad define a clamping surface area when the blade and tissue pad are in close proximity, a spring to limit the amount of an applied force the clamp arm exerts on the clamping surface area; b) disposing the blood vessel between the blade and the tissue pad; c) operating the clamping arm to exert a predetermined average coaptation pressure between and including 120 psi and 210 psi at the clamping surface area; and d) ultrasonically vibrating the blade to transect and seal the blood vessel.