Quick and safe division of vessels is mandatory for advanced endoscopic surgery. Ultrasonically activated devices (USADs) [1-3] or bipolar vessel sealers (BVSs) [4-6] have been proven useful devices for hemostatic dissection in advanced endoscopic operations. But there are still some drawbacks associated with these dissecting devices. To overcome these drawbacks, we have been developing a new surgical device that does not utilize ultrasonic vibration or high frequency. What facilitates vessel sealing in our new device is the heat produced in a metal membrane. In this chapter, a prototype of the new device we have been working on for endoscopic operations is introduced, and its ability and performance in hemostatic dissection assessed in animal experiments is demonstrated.

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