US 12,390,567 B2
Filtration system for preparation of fluids for medical applications
Jeffrey H. Burbank, Manchester, MA (US); Dennis M. Treu, Castle Rock, CO (US); Goetz Friederichs, Beverly, MA (US); Brian C. Green, Westford, MA (US); Christopher S. McDowell, Murray, UT (US); and James M. Brugger, Newburyport, MA (US)
Assigned to NxStage Medical, Inc., Lawrence, NJ (US)
Filed by NxStage Medical, Inc., Lawrence, NJ (US)
Filed on Dec. 27, 2023, as Appl. No. 18/396,765.
Application 18/396,765 is a continuation of application No. 17/212,866, filed on Mar. 25, 2021, granted, now 11,896,750.
Application 17/212,866 is a continuation of application No. 16/423,214, filed on May 28, 2019, granted, now 10,973,969, issued on Apr. 13, 2021.
Application 16/423,214 is a continuation of application No. 15/615,655, filed on Jun. 6, 2017, granted, now 10,420,871, issued on Sep. 24, 2019.
Application 15/615,655 is a continuation of application No. 11/813,472, granted, now 9,700,663, issued on Jul. 11, 2017, previously published as PCT/US2006/000608, filed on Jan. 9, 2006.
Claims priority of application No. PCT/US2005/000381 (WO), filed on Jan. 7, 2005.
Prior Publication US 2024/0123128 A1, Apr. 18, 2024
Int. Cl. A61M 1/16 (2006.01); A61M 1/14 (2006.01); A61M 1/28 (2006.01); A61M 1/34 (2006.01); C02F 1/44 (2023.01)
CPC A61M 1/1656 (2013.01) [A61M 1/14 (2013.01); A61M 1/166 (2014.02); A61M 1/1668 (2014.02); A61M 1/167 (2014.02); A61M 1/1672 (2014.02); A61M 1/1674 (2014.02); A61M 1/288 (2014.02); A61M 1/3462 (2013.01); C02F 1/44 (2013.01); A61M 1/28 (2013.01); A61M 2205/12 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A modular dialysis system, comprising:
a housing that holds at least a water purification system;
the water purification system held in the housing; and
a dialysis treatment machine having fluid connections to receive fluid from the water purification system, wherein
the water purification system includes a pump and fluid circuit configured to generate a constant pressure for uptake by the dialysis treatment machine, and
the fluid circuit includes a feedback loop that circulates dialysate and includes an inline check valve with a cracking pressure equal to the constant pressure.