FLEXIBLE TUBE FOR ENDOSCOPE, ENDOSCOPE-TYPE MEDICAL INSTRUMENT, AND MANUFACTURING METHODS THEREFOR

WIPO Patent Application WO/2022/137986

A1

Provided are: a flexible tube which is for an endoscope and has excellent resilience, and in which the adhesiveness between a flexible tube substrate and a polymer coating layer covering the flexible tube substrate can be sufficiently maintained even when repeatedly exposed to heat for a long period of time, and deterioration in the adhesiveness between the flexible tube substrate and the polymer coating layer is less likely to occur even when repeatedly subjected to disinfection treatment using a hydrogen peroxide solution; an endoscope-type medical instrument comprising the same; and manufacturing methods therefor.　This flexible tube for an endoscope comprises: a flexible tube substrate containing metal as a constituent material; a siloxane compound-containing layer provided on the flexible tube substrate; a primer layer provided on the siloxane compound-containing layer; and a polymer coating layer provided on the primer layer, wherein the siloxane compound has a hydroxy group, and the polymer coating layer contains at least one compound among polyamide, polyester, polyurethane, and polyolefin on the primer layer-contacting side.

NAKAI YOSHIHIRO (JP)
HORITA KAZUMA (JP)

PCT/JP2021/043514

June 30, 2022

November 29, 2021

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FUJIFILM CORP (JP)

A61B1/005; G02B23/24

JP2010035923A	2010-02-18
JPH1142205A	1999-02-16
JP2011212338A	2011-10-27
JPH08234115A	1996-09-13
JP2002065590A	2002-03-05
JPS59137030A	1984-08-06
JP2010035923A	2010-02-18
JPH1192636A	1999-04-06
JPH1192636A	1999-04-06
JP2005015643A	2005-01-20
JP2011072391A	2011-04-14

See also references of EP 4268702A4

YONEKURA Junzo et al. (JP)

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