US 10,376,627 B2
Flexible biological fluid filters
Paolo Verri, Carpi (IT); Daniel Lynn, Spring Grove, IL (US); and Scott Day, Buffalo Grove, IL (US)
Assigned to Fenwal, Inc., Lake Zurich, IL (US)
Appl. No. 15/127,042
Filed by Fenwal, Inc., Lake Zurich, IL (US)
PCT Filed Jun. 6, 2014, PCT No. PCT/US2014/041210
§ 371(c)(1), (2) Date Sep. 19, 2016,
PCT Pub. No. WO2015/147896, PCT Pub. Date Oct. 1, 2015.
Application 15/127,042 is a continuation in part of application No. 14/222,961, filed on Mar. 24, 2014, granted, now 9,796,166.
Prior Publication US 2017/0136167 A1, May 18, 2017
Int. Cl. A61M 1/34 (2006.01); A61M 1/36 (2006.01); A61M 1/02 (2006.01)
CPC A61M 1/3636 (2014.02) [A61M 1/0281 (2013.01); A61M 2202/0439 (2013.01); A61M 2205/3331 (2013.01); Y10T 156/10 (2015.01)] 23 Claims
OG exemplary drawing
 
1. A biological fluid filter assembly comprising:
a flexible housing having first and second walls;
a filtration medium at least partially positioned between the first and second walls of the housing;
a substantially planar post-filter mesh at least partially positioned between the filtration medium and the second wall, the post-filter mesh comprising a semi-permeable layer with material present in a grid or web or crossed arrangement defining a plurality of voids without woven or overlapping strands or strips of material and having a normalized air permeability at a pressure difference of 125 Pa in the range of approximately 40 to approximately 800 cm2/s; and
a seal joining the first and second walls of the housing.