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Title:
DISPOSABLE ENDOSCOPE TUBE SWITCHING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/225563
Kind Code:
A1
Abstract:
A disposable endoscope tube switching device that comprises: an attachment part that is attached to an endoscope; a resin mobile spring bearing part that is movably held by the attachment part and has a cylindrical rib; and a resin mobile piston part that has a rib reception groove into which the rib is inserted and can move in and out of a tube of an endoscope. The mobile spring bearing part and the mobile piston part are joined by ultrasonic welding, and a weld part is formed between a tip end of the rib and a bottom surface of the rib reception groove. A gap is formed between a side surface of the rib and a side surface of the rib reception groove, and at least a portion of the gap is filled with melted resin. The present invention thereby provides a disposable endoscope tube switching device that prevents a resin mobile spring bearing part and mobile piston part from separating.

Inventors:
SAIGA KAZUYA (JP)
Application Number:
JP2019/019985
Publication Date:
November 28, 2019
Filing Date:
May 20, 2019
Export Citation:
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Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B8/12; A61B1/00; A61B1/015; G02B23/24
Domestic Patent References:
WO2017149828A12017-09-08
WO2017091459A12017-06-01
WO2018003185A12018-01-04
Foreign References:
JP2009085301A2009-04-23
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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