PROBLEM TO BE SOLVED: To provide a fogging prevention method that prevents glass such as a lens from being fogged under atmosphere where mist is generated in an endoscopic operation, etc.SOLUTION: Hygroscopic fine particles is introduced into atmosphere of water mist and/or oil mist, and the mist is condensed to remove the cause of fogging, and thereby, the fogging can permanently be prevented by a simple method for preventing the fogging of lenses, etc. A physiologically safe substance such as sodium chloride is used as hygroscopic fine particles, particularly in endoscopic operation, and thereby the fogging can be prevented simply and permanently. Accordingly, it is not required to inject or eject an endoscope 9 during operation, and thereby a burden on a patient can be reduced greatly.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】内視鏡手術等のミストの発生する雰囲気でレンズ等のガラスが曇るのを防止する。【解決手段】吸湿性微粒子を水系ミスト、および/またはオイルミスト雰囲気に導入し、これらミストを凝集させて、曇りの原因を取り除くことでレンズ等の曇りを防止するという、簡便な方法で永続的に曇りを防止することができる。特に内視鏡手術においては、吸湿性微粒子として塩化ナトリウム等の生理的に安全な物質を用いることで簡便に、かつ永続的に曇りを防止することができ、手術中の内視鏡9の抜き差し等の必要が無くなり患者への負担を大きく軽減することができる。【選択図】図2
