	US 11,717,781 B2
	Filter cartridge assembly having fluid management structure
Jacob Jones, Lakewood, CO (US); Joseph Allen, Bloomfield, CO (US); Jonathan Teymouri, Aurora, CO (US); Stephanie Retureta, Highlands Ranch, CO (US); Rodney Crain, Denver, CO (US); and Mahesh Krishnamoorthy, Parker, CO (US)
Assigned to Conmed Corporation, Largo, FL (US)
Filed by Conmed Corporation, Utica, NY (US)
Filed on Jan. 22, 2020, as Appl. No. 16/749,371.
Claims priority of provisional application 62/836,116, filed on Apr. 19, 2019.
Claims priority of provisional application 62/831,933, filed on Apr. 10, 2019.
Prior Publication US 2020/0324238 A1, Oct. 15, 2020
Int. Cl. B01D 46/00 (2022.01); B01D 46/10 (2006.01); B01D 46/14 (2006.01); A61M 13/00 (2006.01); B01D 46/44 (2006.01)

CPC B01D 46/0043 (2013.01) [A61M 13/006 (2014.02); B01D 46/10 (2013.01); B01D 46/44 (2013.01); A61B 2218/008 (2013.01); A61M 2205/125 (2013.01); A61M 2205/3306 (2013.01); A61M 2205/3389 (2013.01); A61M 2205/7536 (2013.01); B01D 2279/00 (2013.01)]

20 Claims

1. A filter cartridge assembly, comprising:

a) a housing including a reservoir for collecting fluids entering the housing through a gas return path;

b) a sensor located within the reservoir for detecting a fluid level therein; and

c) a backer plate positioned within the housing adjacent an inlet port to the reservoir and including fluid management structure to shield the sensor from fluid entering the reservoir from the gas return path through the inlet port and causing a false indication of the fluid level in the reservoir, wherein the backer plate includes an outlet port from the reservoir and a radial guard wall that extends from a front surface of the backer plate into the reservoir for deflecting fluids entering the reservoir away from the outlet port and into the reservoir, and wherein the fluid management structure includes a baffle wall that extends from the front surface of the backer plate adjacent the fluid level sensor to shield the fluid level sensor from fluid entering the reservoir.