PROBLEM TO BE SOLVED: To reduce the time required for a sterilization treatment while improving certainty in the sterilization treatment in an isolator.SOLUTION: The isolator 100 includes: a working chamber 10 a supply HEPA filter 20 a sterilization-substance supply part 30 and a supply passage 70 not passing through a filter, and communicating between the sterilization-substance supply part 30 and the downstream side of gas flow through the supply HEPA filter 20 a supply passage 72 passing through the filter, and communicating between the sterilization-substance supply part 30 and the upstream side of the gas flow through the supply HEPA filter 20 a circulation passage 80 for returning a hydrogen peroxide gas, supplied to the working chamber 10, to the sterilization-substance supply part 30 a three-way valve 90 for switching between the supply passage 70, not passing through the filter, and the supply passage 72 passing through the filter and a control part 300. The control part 300 controls the three-way valve 90 so as to switch to the supply passage 70 not passing through the filter in a first mode for sterilizing the working chamber 10, and to switch to the supply passage 72 passing through the filter in a second mode for sterilizing the working chamber 10 and the supply HEPA filter 20.COPYRIGHT: (C)2013,JPO&INPIT【課題】アイソレータにおける滅菌処理の確実性を向上させるとともに、滅菌処理に要する時間をより短縮する。【解決手段】アイソレータ100は、作業室10、供給HEPAフィルタ20、滅菌物質供給部30、滅菌物質供給部30と供給HEPAフィルタ20の気体流れ下流側とを連絡するフィルタ非経由供給路70、滅菌物質供給部30と供給HEPAフィルタ20の気体流れ上流側とを連絡するフィルタ経由供給路72、作業室10に供給された過酸化水素ガスを滅菌物質供給部30に戻す循環路80、フィルタ非経由供給路70とフィルタ経由供給路72とを切換える三方弁90、および制御部300を備える。制御部300は、作業室10を滅菌する第1モードではフィルタ非経由供給路70に切り換え、作業室10および供給HEPAフィルタ20を滅菌する第2モードではフィルタ経由供給路72に切り換えるように三方弁90を制御する。【選択図】図1
