- Patent Title: Flexible tube for endoscope and method for manufacturing the same
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Application No.: US14667208Application Date: 2015-03-24
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Publication No.: US10010243B2Publication Date: 2018-07-03
- Inventor: Shinya Abe , Nobuharu Takahashi , Shozo Iyama
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2014-063997 20140326
- Main IPC: A61B1/00
- IPC: A61B1/00 ; A61B1/005 ; G02B23/24 ; B29C47/00 ; B29C47/06 ; B29L23/00

Abstract:
A flexible tube for an endoscope includes a flexible tube base, an outer coating layer including a soft resin layer and a hard resin layer, a ratio changing portion, and a tapered portion. In the ratio changing portion, a percentage of a thickness of the hard resin layer decreases and a percentage of a thickness of the soft resin layer increases toward a distal side from a proximal side of the base. In the tapered portion, a ratio between the thickness of the hard resin layer and the thickness of the soft resin layer is maintained, which ratio is the same as that at a position in the ratio changing portion where the percentage of the thickness of the hard resin layer is a lower limit. In the tapered position, an outer diameter of the outer coating layer decreases toward a distal end of the flexible tube base.
Public/Granted literature
- US20150272424A1 FLEXIBLE TUBE FOR ENDOSCOPE AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2015-10-01
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