PROBLEM TO BE SOLVED: To provide an access device to abdominal cavity for a medical treatment instrument in which favorably retaining a surgical view field by effectively evacuating smoke generated in an abdominal cavity and facilitating the smoke evacuating are possible in a laparoscopic surgery.SOLUTION: The access device for a medical treatment instrument includes: retractor means 1 that is mounted on an incision wound and retains the incision by clamping the abdominal wall between a body surface-side ring 11 and an abdominal cavity-side ring 12 cap means 2 that has a plurality of port setting parts to be insertion paths of the treatment instrument into the abdominal cavity connection means 3 that includes a flexible tubular member to be airtightly connected to each of the retractor means 1 and cap means 2 a gas injection port 4 that is provided in the cap means 2 and supplies the abdominal cavity with pneumoperitoneum gas and a tubular smoke evacuation route 5 having flexibility and evacuating the smoke generated in the abdominal cavity to the outside. A smoke evacuation intake port 511 that is an abdominal cavity-side terminal of the smoke evacuation route 5 is passed through the interior of the retractor means and disposed at a position substantially similar to the abdominal cavity-side ring 12 or protruding from the abdominal cavity-side ring 12.COPYRIGHT: (C)2014,JPO&INPIT【課題】腹腔鏡手術における腹腔内への処置器具のアクセス器具において、腹腔内に発生する煙を効果的に排出して手術視野を良好に保つことができ、また、その排煙操作が容易な医療用処置具のアクセス器具を提供すること。【解決手段】切開創に装着し、腹壁を体表側リング11と腹腔側リング12で挟持して開創を維持する開創手段1と、腹腔内への処置具の挿入通路となる複数のポート設定部を備えたキャップ手段2と、前記開創手段1とキャップ手段2の各々と気密的に接続される柔軟な筒状部材を含む接続手段3と、前記キャップ手段2に備える腹腔内に気腹ガスを供給するガス注入ポート4と、腹腔内に発生する煙を外部に排気する柔軟性を備えた管状の排煙ルート5を設けて構成し、該排煙ルート5の腹腔側の末端となる排煙吸入口511は、前記開創手段の内部を通して腹腔側リング12とほぼ同等か、該腹腔側リング12より突出する位置に配置した。【選択図】 図1
