| 摘要 |
PURPOSE: To generate a cavitation effect and prevent the wastes of tissues from sticking on a blade by providing an electromechanical transducer kept in physical/electrical contact with the conductive portion of the blade and a device exciting the blade for incision and coagulation. CONSTITUTION: A handle member 10 holds an electrical assembly 30. The electrical assembly 30 is constituted of a switch assembly 39, a transducer 42, the socket 43 of a blade 70, and an interlock switch 44. When the double-pole blade 70 is excited by a generator in the incision mode, a considerably high-frequency voltage is applied between conductors 73 on both sides of the blade 70. When the blade 70 is brought into contact with the tissues to be incised, a current flows in the tissues, cells are considerably heated, broken, and incised as a result. The cells are quickly dehydrated in the coagulation mode, and a wound is burned to stop the flow of blood. When the piezoelectric transducer 42 is excited, a cavitation is generated, and the wastes of the tissues are prevented from being accumulated on the blade 70. |
