US 12,005,171 B2
Filtering systems and filtering manifolds for use with filtering systems
Justin Charles Jones, Minneapolis, MN (US); Matthew John Hill, St. Paul, MN (US); Elizabeth Christine Johnson, Minneapolis, MN (US); Brett Jacob Andreas, Minneapolis, MN (US); Lucas John Sheehan, Shakopee, MN (US); Nathan Mueggenberg, Coon Rapids, MN (US); Chase Knight-Scott, Tyrone, GA (US); and David John Deroode, Crystal, MN (US)
Assigned to MINNETRONIX NEURO, INC., St. Paul, MN (US)
Filed by MINNETRONIX NEURO, INC., St. Paul, MN (US)
Filed on May 27, 2021, as Appl. No. 17/332,180.
Claims priority of provisional application 63/031,319, filed on May 28, 2020.
Prior Publication US 2021/0369934 A1, Dec. 2, 2021
Int. Cl. A61M 1/34 (2006.01); A61M 1/36 (2006.01)
CPC A61M 1/3496 (2013.01) [A61M 1/34 (2013.01); A61M 1/36 (2013.01); A61M 1/362263 (2022.05); A61M 2202/0464 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/75 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A filtering device for filtering cerebrospinal fluid, the filtering device comprising:
a controller assembly having a socket formed therein;
a filter cassette configured to be removably secured to the socket, the filter cassette defining a filter housing formed from a plurality of discrete layers coupled together and defining a fluid pathway therein;
a membrane disposed between two adjacent layers of the filter housing;
wherein the filter housing has an asymmetric shape that allows the filter cassette to be removably secured to the socket in a singular orientation;
one or more laterally projecting latching projections extending from the filter housing, the latching projections being configured to engage the controller assembly so as to releasably secure the filter housing to the socket; and
a filtering section defined by a widened region of the fluid pathway that is configured to slow the passage of fluid therethrough in order to allow gravity filtration of fluid passing therethrough.