PROBLEM TO BE SOLVED: To provide a precise incision device capable of forming a skin incision with an accurate size without being influenced by experience and skill of a surgeon in a surgical operation.SOLUTION: A precise incision device 100 comprises: a blade member 10 having a cutting blade part 11 capable of forming an incision by puncturing a skin； a casing 30 for storing the blade member 10 in a state in which the cutting blade part 11 can project and retract； a plurality of springs and the like which are launching means for projecting the cutting blade part 11 from an entrance 12 of the casing 30 by applying elastic energy to the blade member 10 in the casing 30 and advancing it instantaneously； a trigger member 60 for activating the launching means； and a position adjustment member 20 and a lock member 25 of the same which are adjustment means for selectively setting a stop position of the blade member 10 advanced by the launching means.SELECTED DRAWING: Figure 1【課題】外科手術において、手術者の経験や技量に左右されることなく正確なサイズの皮膚切開創を形成することができる精密切開装置を提供する。【解決手段】精密切開装置１００は、皮膚を穿刺して切開創を形成可能な切刃部１１を有する刃部材１０と、切刃部１１が突出・退入可能な状態で刃部材１０を収納するケーシング３０と、ケーシング３０内の刃部材１０に弾性エネルギーを付与して瞬発的に前進させることにより切刃部１１をケーシング３０の出入口１２から突出させる発射手段である複数のバネなどと、発射手段を起動させるトリガー部材６０と、発射手段によって前進する刃部材１０の停止位置を選択的に設定する調整手段である位置調整部材２０及びそのロック部材２５と、を備えている。【選択図】図１
