PROBLEM TO BE SOLVED: To provide a body cavity access device with a string-like member, the device that does not interfere with treatment instruments.SOLUTION: A body cavity access device 1 includes a retractor 5 disposed in a wound opening 4, a closure 7 having an insertion part 79 and hermetically closing the retractor 5, and a string-like member 8 with one end fixed to an inside annular member 51 for drawing the inside annular member 51 disposed in the body cavity side of the wound opening 5 to the outside of a body. A holding member 9 for closing and locking the insertion part 79 at the outside of the body is mounted in the other end side of the string-like member 8, and the holding member 9 has a hole part 94 for inserting the string-like member 8 in a sliding manner while holding airtight conditions.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】処置具に干渉することのない紐状部材を備える体腔アクセス器具を提供する。【解決手段】 体腔アクセス器具1は、開創部4に配置される開創器5と、挿通部79を有し、開創器5を気密に閉塞する閉塞部7と、開創部5の体腔側に配置された内側環状部材51を体外に引き出すために前記内側環状部材51に一端が固定された紐状部材8とを備える。前記紐状部材8の他端側には、体外側で挿通部79を閉塞して係止される保持部材9が取り付けられ、保持部材9は、気密を保持した状態で該紐状部材8を摺動可能に挿通する孔部94を有する。【選択図】図1