公开(公告)号：US20230190076A1

公开(公告)日：2023-06-22

申请号：US18169324

申请日：2023-02-15

Applicant: FUJIFILM Corporation

Inventor： Kazuma HORITA ,  Yoshihiro NAKAI ,  Shinya ABE

IPC: A61B1/00 ,  A61B1/005

CPC classification number: A61B1/00071 ,  A61B1/005

Abstract: Provided are a flexible tube for an endoscope, the flexible tube having good elasticity, good flexibility, and sufficient chemical resistance, an endoscopic medical device including the flexible tube for an endoscope, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device. The flexible tube for an endoscope has a flexible-tube base that is tubular and that has flexibility and a polymer cover layer covering the flexible-tube base. The flexible-tube base has a spiral tube made of a metal strip and a tubular mesh member covering the spiral tube and made of braided metal wires, the tubular mesh member has a porosity of 2% to 10%, and the flexible tube has, between the flexible-tube base and the polymer cover layer, a primer layer including a silane coupling agent.

公开(公告)号：US20210290034A1

公开(公告)日：2021-09-23

申请号：US17343883

申请日：2021-06-10

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro NAKAI ,  Toshihide YOSHITANI ,  Shinya ABE ,  Kazuma HORITA ,  Takeshi SENGA

IPC: A61B1/005 ,  A61B1/00 ,  C22C38/18

Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a flexible tube base made of metal, a resin cover layer that covers an outer periphery of the flexible tube base, and a primer layer that includes a silane coupling agent with a specific structure having an amino group and that is disposed between the flexible tube base and the resin cover layer, in which the resin cover layer includes at least one compound selected from the group consisting of polyamides, polyesters, and polyolefins on a side of the resin cover layer in contact with the primer layer, an endoscopic medical device including the flexible tube for an endoscope, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device.

公开(公告)号：US20230292998A1

公开(公告)日：2023-09-21

申请号：US18325122

申请日：2023-05-30

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro NAKAI ,  Kazuma HORITA

IPC: A61B1/005 ,  A61B1/00

CPC classification number: A61B1/0055 ,  A61B1/0011

Abstract: Provided are a flexible tube for an endoscope, the flexible tube having good elasticity, being capable of sufficiently maintaining adhesiveness between a flexible-tube base and a polymer cover layer covering the flexible-tube base even when repeatedly exposed to heat for a long time, and being less likely to undergo a decrease in the adhesiveness between the flexible-tube base and the polymer cover layer even when subjected to disinfection treatment with a hydrogen peroxide solution, an endoscopic medical device including the flexible tube for an endoscope, and methods for producing the flexible tube and the endoscopic medical device.
The flexible tube for an endoscope has a flexible-tube base containing metal as a constituent material, a layer containing a siloxane compound and disposed on the flexible-tube base, a primer layer on the layer containing the siloxane compound, and a polymer cover layer on the primer layer. The siloxane compound has a hydroxy group. The polymer cover layer includes at least one compound of a polyamide, a polyester, a polyurethane, or a polyolefin on a side in contact with the primer layer.

公开(公告)号：US20210298564A1

公开(公告)日：2021-09-30

申请号：US17343899

申请日：2021-06-10

Applicant: FUJIFILM Corporation

Inventor： Yoshihiro NAKAI ,  Toshihide YOSHITANI ,  Shinya ABE ,  Kazuma HORITA ,  Takeshi SENGA

IPC: A61B1/005 ,  A61B1/00 ,  A61L29/08 ,  A61L29/02 ,  B29C48/10 ,  B29C48/151

Abstract: Provided are a flexible tube for an endoscope, the flexible tube having a flexible tube base containing metal as a constituent material, a resin cover layer that covers an outer periphery of the flexible tube base, and a primer layer that includes a specific silane coupling agent and that is disposed between the flexible tube base and the resin cover layer, in which the resin cover layer includes at least one compound selected from the group consisting of polyamides, polyesters, polyurethanes, and polyolefins at least on a side of the resin cover layer in contact with the primer layer, an endoscopic medical device including the flexible tube for an endoscope, a method for producing the flexible tube for an endoscope, and a method for producing the endoscopic medical device.