A dialysis system includes a fluid line fluidly communicating with a fluid source, a peritoneal dialysis unit configured to be placed in fluid communication with the fluid line, the peritoneal dialysis unit including a first user interface and a first control unit, the first user interface configured to receive first user inputs related to a peritoneal dialysis treatment, the first control unit configured to operate the peritoneal dialysis unit in accordance with the first user inputs to perform the peritoneal dialysis treatment, and a blood treatment unit configured to be placed in fluid communication with the fluid line, the blood treatment unit including a second user interface and a second control unit, the second user interface configured to receive second user inputs related to a blood treatment, the second control unit configured to operate the blood treatment unit in accordance with the second user inputs to perform the blood treatment.

A pumping cassette including a housing having at least two inlet fluid lines and at least two outlet fluid lines. At least one balancing pod within the housing and in fluid connection with the fluid paths. The balancing pod balances the flow of a first fluid and the flow of a second fluid such that the volume of the first fluid equals the volume of the second fluid. The balancing pod also includes a membrane that forms two balancing chambers. Also included in the cassette is at least two reciprocating pressure displacement membrane pumps. The pumps are within the housing and they pump the fluid from a fluid inlet to a fluid outlet line and pump the second fluid from a fluid inlet to a fluid outlet.

A pump cassette is disclosed. The pump cassette includes a housing having at least, one fluid inlet line and at least one fluid outlet line. The cassette also includes at least one reciprocating pressure displacement membrane pump within the housing. The pressure pump pumps a fluid from the fluid inlet line to the fluid outlet line. A hollow spike is also included on the housing as well as at least one metering pump The metering pump is fluidly connected to the hollow spike on the housing and to a metering pump fluid line. The metering pump fluid line is fluidly connected to the fluid outlet line.

An enclosure for containing a portable hemodialysis unit includes a housing suitable to support components for performing hemodialysis including a dialyzer, one or more pumps to circulate blood through the dialyzer, a source of dialysate, and one or more pumps to circulate the dialysate through the dialyzer. The housing may have a front panel at which blood circuit connections and dialysate fluidic connections are located, e.g., blood line connections for patient blood access, connections for a reagent supply, dialyzer connections for both blood flow and dialysate, etc. The enclosure may also include a pair of vertical, side-by-side doors hingedly mounted to the housing. With the doors in the closed position, access to the patient access and dialysate fluidic connections may be blocked, and the doors may allow for the retention of heat in the housing suitable for disinfection during a disinfection cycle.

The present invention generally relates to hemodialysis and similar dialysis systems, including a variety of systems and methods that would make hemodialysis more efficient, easier, and/or more affordable. One aspect of the invention is generally directed to new fluid circuits for fluid flow. According to one aspect, a blood pump is configured to pump blood to a dialyzer of a hemodialysis apparatus, the blood pump comprising a pneumatically actuated or controlled reciprocating diaphragm pump. In an embodiment, the diaphragm of the pump comprises a flexible membrane formed or molded to generally conform to a curved inner wall of a pumping chamber or control chamber of the pump, wherein the diaphragm is pre-formed or molded to have a control side taking a convex shape, so that any elastic tension on the diaphragm is minimized when fully extended into a control chamber of the pump.

A medical fluid management assembly includes a pneumatic manifold, a pump engine, a valve engine, and a fluid manifold. The pneumatic manifold includes a plurality of pneumatic passageways and a plurality of pneumatic connectors. The pump engine includes a pump chamber and the valve engine includes a valve chamber. Each of the pump engine and valve engine includes a pneumatic connector mated sealingly and releaseably with one of the pneumatic connectors of the pneumatic manifold. Additionally, each of the pump engine and valve engine includes a fluid connector. The fluid manifold includes a plurality of fluid pathways and a plurality of fluid connectors mated sealingly and releaseably with the fluid connectors of the pump engine and the valve engine.

A peritoneal dialysis system includes a control unit configured to cause (i) a fluid inlet valve and a fluid outlet valve to occlude a fluid inlet line and a fluid outlet line, respectively, while a linear actuator moves a piston to create a positive pressure within a pump housing, the positive pressure measured by a pressure sensor, and (ii) the fluid inlet valve to occlude the fluid inlet line and the fluid outlet valve to open the fluid outlet line, while the linear actuator moves the piston so as to maintain the positive pressure within the pump housing while fluid is pumped out of the fluid pump chamber via the opened fluid outlet line.

A dialysis device comprises at least a first membrane and a second membrane, wherein a first chamber formed by the first membrane is configured to receive a first fluid; a second chamber formed by the second membrane is configured to receive a second fluid; a third chamber formed in between a housing, the first membrane and the second membrane is configured to receive a third fluid; the first fluid flowing through the first membrane can be indirectly communicated with the second fluid flowing through the second membrane via the third fluid. A dialysis system, use of the dialysis device, a method for establishing the dialysis system, a method for filling and/or priming the dialysis system and a method for removing air are further disclosed. The dialysis device and the dialysis system are suitable for viscous biological dialysis fluid and no direct flow occurs between the patient and the dialysis fluid.

Hemodialysis and similar dialysis systems including a variety of systems and methods that make hemodialysis more efficient, easier, and/or more affordable, and include new fluid circuits for fluid flow in hemodialysis systems and a reciprocating diaphragm pump for pumping fluids. The reciprocating diaphragm pump includes a flexible diaphragm, a first rigid body having a curved pumping chamber wall, a second rigid body having an opposing curved control chamber wall. The diaphragm is interposed between the pumping chamber wall and the control chamber wall to define a pumping chamber and a control chamber. The diaphragm of the pump has a peripheral bead arranged to locate the diaphragm between the first rigid body and the second rigid body and a diaphragm body having a curved, semi-spheroid or domed shape. The diaphragm is pre-formed or molded so that during a delivery stroke of the pump, the elastic force of the diaphragm resisting its deployment into the pumping chamber prevents a peripheral portion of the diaphragm body from fully contacting the pumping chamber wall.

A medical fluid management assembly includes a pneumatic manifold, at least one valve, and a fluid manifold. The pneumatic manifold includes at least one pneumatic passageway that is pneumatically connected to the at least one valve. The fluid manifold includes at least one chamber comprising upper and lower fluid chambers separated by a flexible membrane. The fluid manifold also includes fluid tube sections and fluid pathways that fluidly couple the one or more upper and lower fluid chambers to the at least one valve and at least one of a purified water line, a liquid concentrate line, a to-extracorporeal circuit fresh dialysis fluid line, a drain line, or a from-extracorporeal circuit used dialysis fluid line.