The invention relates to a portable ultrafiltration unit A which comprises a blood pump 7 for conveying blood and an ultrafiltration pump 6 for conveying ultrafiltrate. The invention further relates to a stationary device B for supplying dialysate to the portable ultrafiltration unit A, and to a medical treatment system which comprises an ultrafiltration unit and a device for supplying dialysate to the ultrafiltration unit. The ultrafiltration unit according to the invention is in the form of a unit to be connected to a stationary device for supplying dialysate to the ultrafiltration unit, in such a way that a fluid connection can be established for feeding in fresh dialysate and removing used dialysate. As a result, the ultrafiltration unit can not only be used for ultrafiltration, but also, when used in conjunction with the stationary device for supplying dialysate to the ultrafiltration unit, for a blood treatment as carried out by a conventional blood treatment device. It is merely necessary to connect the ultrafiltration unit A to the device B for supplying dialysate to the ultrafiltration unit. There is no need to detach the patient connections 27A, 27B of the venous and arterial blood lines 27, 28 or to attach said connections to the patient, as result of which the preparation time for a blood treatment can be reduced.

A dialysis fluid system includes a dialysis fluid inlet; a dialysis fluid outlet; a pump positioned and arranged to pump dialysis fluid through the dialysis fluid inlet and the dialysis fluid outlet; and an inductive heater located between the dialysis fluid inlet and the dialysis fluid outlet, the inductive heater including a fluid flowpath positioned and arranged to receive non-heated dialysis fluid from the dialysis fluid inlet and to output heated dialysis fluid to the a dialysis fluid outlet, a conductive heater element located within the fluid flowpath so as to be or act as a secondary coil of a transformer, and a primary coil of the transformer located outside of the fluid flowpath and positioned so as to magnetically induce a current into the conductive heater element, causing the conductive heater element and surrounding fluid to heat.

A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.

An implantable or wearable kidney enclosure that is cylindrical, ovoid, or otherwise non-angular e.g., not rectangular or cuboid), having a circular or oval hemofilter that provides a blood flow pattern from an internal, central artery source radially outwards. Due to the efficient flow of the circular filter design, the enclosure can be made in a cylindrical low profile shape, resulting in a compact enclosure highly suitable for implantable and wearable dialysis applications.

Disclosed are apparatus and methods for blood and other biological fluid purification using a membrane with cell containing vascular channel systems and filtration channel systems. Also disclosed are methods of making the apparatus as well as methods of making membranes.

A hybrid hemodialysis (HD)/peritoneal dialysis (PD) system includes: a reservoir; a weigh scale operably coupled with the reservoir; and at least one controller programmed to run (i) an HD treatment in which blood is pumped to a blood compartment of a dialyzer, fresh HD dialysis fluid is pumped to a dialysis fluid compartment of the dialyzer, and used HD dialysis fluid is pumped from the dialysis fluid compartment of the dialyzer to the reservoir, and at a different time (ii) a PD treatment in which fresh PD dialysis fluid is pumped to a patient and used PD dialysis fluid is pumped from the patient to the reservoir.

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

A hemodialysis system configured to purge air from a blood circuit comprising: a dialyzer; a dialysis fluid circuit operable with the dialyzer via dialysis fluid inlet and outlet lines; the blood circuit operable with the dialyzer and including an arterial line, a venous line, a blood pump operable with the arterial line upstream of the dialyzer, and a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged using dialysis fluid or other physiologically acceptable fluid pumped by at least one of the fresh or used dialysis fluid pumps from the dialysis fluid circuit, through the dialyzer, into the blood circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly into the blood circuit.

A blood purification apparatus that is capable of, with no preparatory operations, performing substitution by supplying dialysate in a dialysate introduction line to a blood circuit during ultrafiltration treatment, or performing blood return by immediately supplying the dialysate in the dialysate introduction line to the blood circuit after the ultrafiltration treatment. A blood purification apparatus includes a dialyzer, a dialysate introduction line, a dialysate drain line L2 through which drain liquid from the dialyzer is drained, and an ultrafiltration pump capable of removing water from the blood in the blood circuit. The blood purification apparatus is capable of performing substitution or blood return by supplying the dialysate in the dialysate introduction line L1 to the blood circuit. In an ultrafiltration treatment in which the ultrafiltration pump is activated while the introduction of the dialysate into the dialyzer is stopped, dialysate delivery is performed while the introduction of the dialysate into the dialyzer is prevented.

A hemodialysis system configured to purge air from a blood circuit comprising: a dialyzer; a dialysis fluid circuit operable with the dialyzer via dialysis fluid inlet and outlet lines; the blood circuit operable with the dialyzer and including an arterial line, a venous line, a blood pump operable with the arterial line upstream of the dialyzer, and a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged using dialysis fluid or other physiologically acceptable fluid pumped by at least one of the fresh or used dialysis fluid pumps from the dialysis fluid circuit, through the dialyzer, into the blood circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly into the blood circuit.