Portable dialysate generator

A portable dialysate generator, comprising:

• a) a forward osmosis membrane module;
• b) a concentrated aqueous salt solution reservoir;
• c) a non-sterile water feedstock inlet;
• d) a collection reservoir;
• and
• e) a sterile dialysate collection reservoir;
• f) a four-way valve;
• wherein, the forward osmosis membrane module has a first fluid side and a second fluid side, the first fluid side and the second fluid side being separated by an osmosis membrane;
• wherein, the non-sterile water feedstock inlet is operably connected to, and in fluid communication with the first fluid side of the forward osmosis membrane module;
• wherein, the concentrated aqueous salt solution reservoir is operably connected to, and in fluid communication with the second fluid side of the forward osmosis membrane module;
• wherein, the collection reservoir is operably connected to, and in fluid communication with the second fluid side of the forward osmosis membrane module;
• wherein, the portable dialysate generator does not have an electric-powered pump that generates more than 5 psi for fluid pressure;
• wherein, the portable dialysate generator is man-portable;
• wherein the non-sterile water feedstock inlet and the concentrated aqueous salt solution reservoir are operably connected to the forward osmosis membrane module in a counter-concurrent configuration
• wherein the sterile dialysate collection reservoir is connected to and in fluid communication with the second fluid side of the forward osmosis membrane module
• wherein the sterile dialysate collection reservoir is fillable by a produced dialysate from the second fluid side of the forward osmosis membrane module, and wherein there is
• no electric-powered pump to move the produced dialysate from the forward osmosis membrane module to the sterile dialysate collection reservoir;
• wherein the sterile dialysate collection reservoir is either a flexible and fillable bag or a movable piston, and wherein the sterile dialysate collection reservoir is operably connected to the forward osmosis membrane module so excess fluid volume produced
• in the forward osmosis membrane module can fill the sterile dialysate collection reservoir
• wherein the collection reservoir comprises a two-stroke piston with a first collection reservoir side and a second collection reservoir side;
• wherein the four-way valve is operably connected to and in fluid communication with the forward osmosis membrane module and the collection reservoir;
• and,
• wherein, the four-way valve directs fluid communication from the forward osmosis membrane module to the first collection reservoir side or to the second collection reservoir side.