A dialysis machine which monitors the pressure of blood entering and leaving a patient's body using several sensors (37, 39) and adapts the pressure of a dialysate solution feed to compensate for compliances in the dialysate fluid flow path. As a consequence, better flow balance is maintained throughout dialysis treatment leading to a more uniform removal of waste materials from the blood.

The present invention relates to a cassette module for controlling fluid flows, in particular for use in blood treatment systems or in infusion systems, wherein the cassette module has at least one first functional layer and at least one second functional layer, wherein the first functional layer has means for the flow guidance of at least one fluid flow, and wherein the cassette module furthermore has at least two membranes of which the first is in contact with the means for the flow guidance of a fluid flow, and wherein the second functional layer is arranged between the two membranes and has means for generating an underpressure between the membranes.

In one aspect, a peritoneal dialysis system includes a tray for supporting a bag that can receive dialysate from a source of dialysate, multiple force sensors disposed adjacent a portion of the tray that is in contact with the bag when the bag is supported by the tray, and one or more processors configured to receive data from the multiple force sensors and to determine, based on the data, an amount of dialysate contained in the bag.

A medical treatment system, such as peritoneal dialysis system, may include control and other features to enhance patient comfort and ease of use. For example, a peritoneal dialysis system may include a control system that can adjust the volume of fluid infused into the peritoneal cavity to prevent the intraperitoneal fluid volume from exceeding a pre-determined amount. The control system can adjust by adding one or more therapy cycles, allowing for fill volumes during each cycle to be reduced. The control system may continue to allow the fluid to drain from the peritoneal cavity as completely as possible before starting the next therapy cycle. The control system may also adjust the dwell time of fluid within the peritoneal cavity during therapy cycles in order to complete a therapy within a scheduled time period. The cycler may also be configured to have a heater control system that monitors both the temperature of a heating tray and the temperature of a bag of dialysis fluid in order to bring the temperature of the dialysis fluid rapidly to a specified temperature, with minimal temperature overshoot.

In some aspects, a dialysis machine support assembly includes a platform configured to support a dialysis machine and a drive assembly configured to move the platform vertically.

Dialysis systems and methods for operating dialysis machines (e.g., peritoneal dialysis machines) for conducting dialysis treatments are disclosed. The dialysis system may include a dialysis machine for transferring dialysate to a patient from a dialysate bag. The dialysate may flow from the dialysate bag through a disposable cartridge or cassette positionable within the dialysis machine. A filter may be included in, coupled to, etc., the dialysis machine. In use, the filter may be configured to filter out air content from the dialysate. In some embodiments, the filter may be incorporated into and/or operatively coupled to the disposable cartridge or cassette inserted into the dialysis machine.

A system for performing a peritoneal dialysis therapy includes at least one dialysis fluid pump, and a logic implementer operable with the at least one dialysis fluid pump to perform a plurality of peritoneal dialysis cycles for a patient. The logic implementer transmits an amount of dialysis fluid provided during the plurality of peritoneal dialysis cycles. A server receives the amount of dialysis fluid provided during the plurality of peritoneal dialysis cycles and determines an amount of ultrafiltration (UF) removed from the patient based on the amount of dialysis fluid provided by the at least one dialysis fluid pump. The server also updates a UF trend using previous amounts of UF removed from the patient and the amount of UF removed from the patient during the most recent dialysis treatment and generates an alert if the UF trend changes by more than a preset percentage.

An example peritoneal dialysis system is disclosed. The example peritoneal dialysis system includes an automated peritoneal dialysis (APD) machine configured to remove ultrafiltrate (UF) from a patient and record how much UF has been removed. The APD machine operates according to a prescription to remove the UF. The system also includes a server in communication with the APD machine. The server analyzes the UF data to determine if the prescription is to be modified to compensate for changes to the patient's renal function or renal transport characteristics.

A system for performing a peritoneal dialysis therapy includes at least one dialysis fluid pump, and a logic implementer operable with the at least one dialysis fluid pump to perform a plurality of peritoneal dialysis cycles, the cycles including a fill phase, a dwell phase and a drain phase, the logic implementer configured to: (i) store a first peritoneal dialysis treatment having a total prescribed fresh dialysis fluid fill volume delivered over a number of cycles; and (ii) convert the first peritoneal dialysis treatment into a second peritoneal dialysis treatment having a different number of cycles and using the same total prescribed fresh dialysis fluid fill volume.

A method is provided for detecting leaks in a disposable medical fluid cassette that includes a base and a flexible membrane attached to the base in such a way that the base and the flexible membrane cooperate to at least partially form a fluid passageway. The method includes applying a first force to the flexible membrane, measuring a first physical property of a system that includes the medical fluid cassette a medical fluid pumping machine, removing the first force from the flexible membrane, applying a second force to the flexible membrane, measuring a second physical property of the system, and determining whether the medical fluid cassette leaks based on a comparison of the first physical property and the second physical property.