| 摘要 |
The present invention relates to surgical instruments for removing protruding tissue such as tonsils, warts, polyps and like, from the body, more specifically, it relates to loop type snare instruments supplying a high frequency electrical current for coagulation and cutting during the removal of these body growths. In a primary embodiment of the invention, a loop is provided which is made of electrically conductive wire connected to a loop made of electrically conductive wire within a tubular insulated sheath. The wire is connected to a handle assembly that will allow the loop to be extended from or retracted into the distal end of the tubular insulated sheath. The loop is covered over a major portion of its circumference by an insulating material, leaving only a minor portion of its circumference uninsulated at the portion of the loop most distal from the tubular sheath, and electrically active. The handle mechanism includes an electrical connector for connection of the conductive wire to an electrosurgical generator. |
