Title:
SUCTION VALVE AND ENDOSCOPE
Document Type and Number:
WIPO Patent Application WO/2022/148381
Kind Code:
A1
Abstract:
Disclosed are a suction valve and an endoscope. The suction valve comprises an outer shell, a shaft core, a first sealing rubber ring and two or more second sealing rubber rings, wherein the outer shell is hollow, a pressing part is arranged at the top of the outer shell, and a first opening is provided in a side wall of the outer shell; the first sealing rubber ring is sleeved on the outer side of the bottom of the outer shell; the shaft core is inserted into the outer shell and is connected to the pressing part, a second opening and a third opening are respectively provided at the bottom and the side wall of the shaft core, and the second opening is in communication with the third opening; and the two or more second sealing rubber rings are all sleeved on the shaft core. When the pressing part is pressed, the shaft core moves downwards, such that the third opening is in communication with the first opening, thereby solving the technical problem of an existing suction valve needing to realize sealing by means of maintaining tightness between a sealing ring and an inner wall of an endoscope, but after the suction valve is pressed to perform a suction operation, the sealing ring and the inner wall of the endoscope generating a friction force in the direction opposite to that of the pressing, thus causing pressing retardation and spring-back retardation, thereby seriously affecting the operation of workers.
Inventors:
NG CHI HANG (CN)
Application Number:
PCT/CN2022/070353
Publication Date:
July 14, 2022
Filing Date:
January 05, 2022
Export Citation:
Assignee:
A SUCTION VALVE AND AN ENDOSCOPE (CN)
International Classes:
A61B1/015; A61B1/00; A61B1/012; F16K11/065
Foreign References:
| CN207886188U | 2018-09-21 | |||
| CN209770311U | 2019-12-13 | |||
| CN104224090A | 2014-12-24 | |||
| CN110840375A | 2020-02-28 | |||
| JP2007075417A | 2007-03-29 |
Attorney, Agent or Firm:
TAIYUAN WANWEIXINZHI INTELLECTUAL PROPERTY AGENCE (SPECIAL ORDINARY PARTNERSHIP) (CN)
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