| 摘要 |
PROBLEM TO BE SOLVED: To prevent an operating wire from being cut by designing a device in such a manner that no unnecessary force is applied to the operating wire. SOLUTION: This forceps device is equipped with a guide tube, a pair of openable forceps cups attached to the tip of the guide tube, an operating wire inserted through the guide tube, and an operating mechanism 50 mounted on the base end of the guide tube. This operating mechanism 50 consists of a grasper 60 with a rod part 61 and a slider 70 attached to the rod part 61 in such a manner that the slider is moved sliding. In addition, a receiving member 80 is fitted to a terminal pipe 25 as the base end part of the operating wire. This receiving member 80 is energized backward by a compression coil spring 85. The slider 70 is not connected to the base end part of the operating wire, but comes into contact with the receiving member 80 while moving forward. Consequently, the operating wire is moved forward through the receiving member 80 and the pair of forceps cups are opened. If the slider 70 slides back, the operating wire is pulled by the force of the coil spring 85 to close the forceps cups. |
