| 摘要 |
PURPOSE: To minimize the risk of carrying contaminant in the abdominal cavity by gas by passing gas blown in the abdominal cavity out of contact with many parts or components. CONSTITUTION: A hollow needle 21 having one end and the other peak is fixed in housings 71, 69, and a pipe 27 having a closed end and a side wall hole 31 in the vicinity of the closed end is held in such a manner as to be freely slid in the hollow needle 21. The other end of the pipe 27 is fitted to a central hole of a bobbin 29 packaged in the housings 71, 69, and communicated with a port of a bobbin 29 for receiving a peacock 17, thereby letting a fluid flow from the peacock 17 into a straight pipe 27. The bobbin 29 is energized by a spring 121 and the closed end of the pipe 27 is projected from the peak end of the needle 21 to keep the side wall hole of the pipe from being blocked. When the force resisting the energizing force is applied, the pipe 27 is stored in the needle 21, and a part of the bobbin 29 is projected from the housings 71, 69, to indicate that the pipe 27 is stored in the needle. |
