| CPC A61B 1/00096 (2013.01) [G02B 1/118 (2013.01); G02B 1/18 (2015.01)] | 14 Claims |
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1. An endoscope distal end cover for protecting a distal end of an endoscope which has an observation window at the distal end, comprising:
a synthetic polymer film which is to be located over the observation window when the endoscope distal end cover is attached to the distal end of the endoscope,
wherein the synthetic polymer film has a surface which includes a plurality of raised portions on a side opposite to the endoscope,
when viewed in a normal direction of the synthetic polymer film, a two-dimensional size of the plurality of raised portions is in the range of more than 20 nm and less than 500 nm, and
a static contact angle of water with respect to the surface is not less than 150°, and a static contact angle of hexadecane with respect to the surface is not less than 60°, wherein
the synthetic polymer film is formed from a photocurable resin,
the photocurable resin contains a first polymerizable fluoric compound which contains a fluorine element,
the first polymerizable fluoric compound has a plurality of polymerizable functional groups and has a molecular weight of not less than 1000 and not more than 5000, and
at the lapse of 5 minutes since placing a 200 μL drop of water on the surface of the synthetic polymer film, a pH of an aqueous solution is not less than 6.5 and not more than 7.5.
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