US RE49,881 E1
Re-use of a hemodialysis cartridge
Clive Henry Buckberry, Warwickshire (GB)
Assigned to QUANTA FLUID SOLUTIONS LTD., Warwickshire (GB)
Appl. No. 17/345,665
Filed by Quanta Dialysis Technologies Limited, Warwickshire (GB)
PCT Filed Mar. 27, 2014, PCT No. PCT/GB2014/050978
§ 371(c)(1), (2) Date Sep. 22, 2015,
PCT Pub. No. WO2014/155120, PCT Pub. Date Oct. 2, 2014.
Application 17/345,665 is a reissue of application No. 14/779,175, filed on Mar. 27, 2014, granted, now 10,314,962, issued on Jun. 11, 2019.
Claims priority of application No. 1305755 (GB), filed on Mar. 28, 2013.
Int. Cl. A61M 1/16 (2006.01); A61M 1/34 (2006.01); A61M 1/36 (2006.01)
CPC A61M 1/168 (2013.01) [A61M 1/16 (2013.01); A61M 1/1645 (2014.02); A61M 1/34 (2013.01); A61M 1/3413 (2013.01); A61M 1/342 (2013.01); A61M 1/3635 (2014.02); A61M 2202/0413 (2013.01); A61M 2205/128 (2013.01); A61M 2205/33 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A method of cleaning a dialysate mixing and flow balance cartridge for re-use in the [ a ] hemodialysis machine, comprising:
a) providing the cartridge, the cartridge having a first mixing pump chamber, a second mixing pump chamber connected to the first mixing pump chamber, a first flow balance pump chamber connected to the second mixing pump chamber, a second flow balance pump chamber, at least one inlet [ a plurality of inlets ] and at least one outlet [ a plurality of outlets] ;
b) connecting a sanitisation device [ chemical cleaning receptacle ] between the at least one inlet [ plurality of inlets ] and the at least one outlet [ plurality of outlets ] of the cartridge, [ wherein ] the sanitisation device comprising a chemical cleaning receptacle that is external to the cartridge;
c) flowing a liquid through the cartridge and the sanitisation device [ chemical cleaning receptacle ] in a first direction by actuation of at least one of the pump chambers on the cartridge;
d) flowing the liquid through the cartridge and the sanitisation device [ chemical cleaning receptacle ] in a second direction by actuation of at least one of the pump chambers on the cartridge; and
e) flowing the liquid out of the cartridge through the at least one outlet; and
wherein the at least one inlet of the cartridge comprises a plurality of inlets, each one of a spent dialysate solution inlet, a water inlet, a bicarbonate inlet and an acid inlet being a respective one of the plurality of inlets; and
the at least one outlet comprises a plurality of outlets, each one of a drain port, a clean dialysate solution outlet, and a water outlet being a respective one of the plurality of outlets [ at least one of the plurality of outlets] .