So that the chamber collapse is canceled after the occlusion, so that it detects the break of obstruction due to tissue pieces at the end of the suction path, is allowed to terminate the chamber collapse closing transiently the end of the suction path, to vent the suction line transiently at the same time react, surgical treatment device for post-occlusion chamber collapse canceling equipment. In a preferred embodiment, (300), closed transiently accordance with the detection of the clearing of the blockage of tear sensor occlusion, occlusion controllably block the flow of the suction path breakage sensor occlusion for detecting the clearing of the obstruction stabilizes the tear and to prevent the collapse of the chamber body and the subsequent vacuum surge, open transiently in order to reduce the vacuum in response to the detection of the clearing of the blockage of tear sensor obstruction blocking valve normally open and (57), , related methods can be provided to prevent the collapse of the chamber body and the subsequent vacuum surge, the vent valve normally closed, to prevent the collapse of the chamber body during treatment by the vacuum surge following the clear, and surgical equipment. Normally open valve dispenses In an alternative embodiment. [Selection] Figure 12閉塞後チャンバー崩壊がキャンセルされるよう、吸引パスの末端で組織片による閉塞の破れを検出し、吸引パスの末端を過渡的に塞ぎチャンバー崩壊を終端させ、同時に過渡的に吸引ラインをベントするよう反応する、外科処置装置用閉塞後チャンバー崩壊キャンセリング装置。好適な実施態様で、閉塞のクリアを検知する閉塞の破れセンサ(300)、閉塞の破れセンサの閉塞のクリアの検知に応じ過渡的に閉じ、吸引パス内の流れを閉塞し制御可能に閉塞の破れを安定化し、真空サージとこれに続くチャンバー本体の崩壊を防止する、通常開の閉塞弁(57)、及び閉塞の破れセンサの閉塞のクリアの検知に応じ真空を低減すべく過渡的に開き、真空サージとこれに続くチャンバー本体の崩壊を防止する、通常閉のベント弁を具備して、クリアに続く真空サージによる処置中のチャンバー本体の崩壊を防止する、外科処置装置と関連方法。代替態様では通常開の弁は省ける。【選択図】図12
