US 12,435,801 B2
Suction valve and an endoscope
Chi Hang Ng, Hong Kong (CN)
Assigned to Arctic Ocean Tinore Trade Co., Limited, Hong Kong (CN)
Filed by Arctic Ocean Tinore Trade Co., Limited, Hong Kong (CN)
Filed on Jan. 10, 2022, as Appl. No. 17/571,635.
Prior Publication US 2022/0221069 A1, Jul. 14, 2022
Int. Cl. F16K 11/07 (2006.01); A61B 1/00 (2006.01); A61B 17/00 (2006.01)
CPC F16K 11/0716 (2013.01) [A61B 1/00068 (2013.01); A61B 17/00234 (2013.01); A61B 2017/00296 (2013.01); A61B 2217/005 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A suction valve, comprising an outer shell, a shaft, and two or more second sealant rings;
wherein the outer shell is hollow, and is provided with a pressing part at a top of the outer shell and a first opening in a side wall of the outer shell;
the shaft is embedded into the outer shell and is connected to the pressing part; the shaft is provided with a second opening at the bottom and a third opening in a side wall of the shaft respectively, and the second opening is in communication with the third opening;
the two or more second sealant rings are each sleeved on the shaft, wherein a part below the third opening is transversely raised to form a first projection, a second projection is transversely raised at the second opening, one of said second sealant rings is sleeved between the first projection and the third opening, and another of said sealant rings is sleeved above the second projection to form two longitudinal compression sealing layers;
as the pressing part is pressed, the shaft moves downward such that the third opening is in communication with the first opening.