PROBLEM TO BE SOLVED: To provide an operative field expansion instrument and its installation method in which an operative field can be safely secured by a simple technique.SOLUTION: An operative field expansion instrument 1 is a solid structure having a pair of top planar members 11 and band members 12 attached to the pair of top planar members. An insertion part capable of being inserted in adjacent other band members is attached to each of the band members, and can be folded in an intermediate M of a surface distance between this top planar member and the pair of top planar members via this band member, and thereby an operative field is expanded by being tightened in an intermediate vicinity of this surface distance.COPYRIGHT: (C)2016,JPO&INPIT【課題】簡便な手法で安全に術野を確保することのできる術野拡大器具及びその設置方法を提供する。【解決手段】術野拡大器具1は、一対の頂平面部材11と、この一対の頂平面部材に付された帯部材12と、を有する立体構造物であって、この帯部材の各々には、隣接する他の帯部材に差し入れられる差入部が付され、この頂平面部材及びこの帯部材を経由する一対の頂平面部材の表面距離の中間Mにおいて折り曲げ可能であり、この表面距離の中間近傍において引締められることにより術野を拡大する。【選択図】図1
