US 12,228,215 B2
Check valve for ventilator
Kai Qu, Shenzhen (CN); and Rongrong Zhu, Shenzhen (CN)
Assigned to RESVENT MEDICAL TECHNOLOGY CO., LTD, Shenzhen (CN)
Filed by RESVENT MEDICAL TECHNOLOGY CO., LTD, Shenzhen (CN)
Filed on Oct. 11, 2023, as Appl. No. 18/485,287.
Claims priority of application No. 202211627615.8 (CN), filed on Dec. 16, 2022.
Prior Publication US 2024/0200677 A1, Jun. 20, 2024
Int. Cl. F16K 15/14 (2006.01); F16K 27/02 (2006.01); A61M 16/20 (2006.01)
CPC F16K 15/147 (2013.01) [F16K 27/0209 (2013.01); A61M 16/208 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A check valve for a ventilator, comprising:
a housing assembly, and
a flow guide assembly;
wherein the housing assembly defines a flow channel, and the flow channel defines an air outlet;
wherein the flow guide assembly is disposed in the flow channel; the flow guide assembly comprises a first baffling sleeve and a second baffling sleeve; the first baffling sleeve and the second baffling sleeve are disposed in an axial direction of the flow channel in sequence; a first flow passing opening is defined in the first baffling sleeve; one side of the first baffling sleeve away from the first flow passing opening is inclined toward the air outlet; one side of the second baffling sleeve is inclined toward the air outlet; the second baffling sleeve faces the first flow passing opening; a projection of the second baffling sleeve on a horizontal cross section of the flow channel completely overlaps a projection of the first flow passing opening on the horizontal cross section of the flow channel.