Title:
ENDOSCOPE
Document Type and Number:
WIPO Patent Application WO/2022/070982
Kind Code:
A1
Abstract:
The present invention provides an endoscope capable of preventing liquid in a liquid path from being sucked up and jetted with gas during an air supply operation. Provided is an endoscope which comprises a liquid path (40) through which liquid passes, and a gas path (30) through which gas passes, and in which a joining recessed portion (134) in which the liquid and the gas join together is formed in a distal end portion (13), wherein one end side of the liquid path (40) and one end side of the gas path (30) communicate with the joining recessed portion (134), and the size of a first communication hole (34) between the gas path (30) and the joining recessed portion (134) is made larger than the size of a second communication hole (44) between the liquid path (40) and the joining recessed portion (134).
Inventors:
KATAYAMA TOSHIYUKI (JP)
Application Number:
PCT/JP2021/034268
Publication Date:
April 07, 2022
Filing Date:
September 17, 2021
Export Citation:
Assignee:
HOYA CORP (JP)
International Classes:
G02B23/24; A61B1/00; A61B1/012
Foreign References:
| JPH11253393A | 1999-09-21 | |||
| JP2007190118A | 2007-08-02 | |||
| JP2013236678A | 2013-11-28 | |||
| JP2012254153A | 2012-12-27 | |||
| JP2010046300A | 2010-03-04 | |||
| JP2005000567A | 2005-01-06 | |||
| JP2020167753A | 2020-10-08 |
Attorney, Agent or Firm:
KOHNO, Hideto et al. (JP)
Download PDF: