US 12,070,188 B2
Endoscope tip cover and endoscope
Miho Yamada, Sakai (JP); Kiyoshi Minoura, Sakai (JP); Tokio Taguchi, Sakai (JP); and Yasuhiro Shibai, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/283,188
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Oct. 1, 2019, PCT No. PCT/JP2019/038772
§ 371(c)(1), (2) Date Apr. 6, 2021,
PCT Pub. No. WO2020/075579, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 2018-191660 (JP), filed on Oct. 10, 2018.
Prior Publication US 2021/0345860 A1, Nov. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 1/00 (2006.01)
CPC A61B 1/00137 (2013.01) 12 Claims
OG exemplary drawing
 
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,
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,
a static contact angle of water with respect to the surface is not less than 98°,
the synthetic polymer film includes a resin film which is made of 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.