PROBLEM TO BE SOLVED: To provide a medical stopcock constructed and arranged so as to withstand high pressure and gamma radiation.SOLUTION: The stopcock 10 generally includes a housing 12 and a valve member 14. The valve member 14 is trapped within the housing 12 so that when it is subjected to a relatively high pressure, the valve member 14 will not fall out from the housing 12. A handle member 16 is attached to the valve member 14 and allows the valve member 14 to be rotated, from open to closed positions. In some preferred embodiments, the handle member 16 locks the valve member 14 within the housing 12, when it is attached. Since all the components are made of gamma-stable materials, the stopcock 10 can be sterilized in its package by using gamma-ray irradiation.COPYRIGHT: (C)2010,JPO&INPIT【課題】高圧およびガンマ線に耐えるように構成配置された医療用活栓を提供する。【解決手段】活栓(10)は、一般的にハウジング(12)および弁部材(14)からなる。弁部材(14)は、ハウジング(12)内に嵌め込まれるので、比較的高い圧力に曝されても、弁部材(14)がハウジング(12)から脱落しえない。ハンドル部材(16)が弁部材(14)に取り付けられ、弁部材(14)を開位置から閉位置に回転させうる。好適な一実施形態では、ハンドル部材(16)は、取り付けられたときに、弁部材(14)をハウジング(12)内に固定する。すべての構成部品がガンマ線に安定な材料からなるので、活栓(10)は、その包装内で、ガンマ線照射を使用して滅菌されうる。【選択図】図2
