A medical infusion fluid handling system, such as an automated peritoneal dialysis system, may be arranged to de-cap and connect one or more lines (such as solution lines) with one or more spikes or other connection ports on a fluid handling cassette. This feature may reduce a likelihood of contamination since no human interaction is required to de-cap and connect the one or more lines and the one or more spikes. For example, the automated peritoneal dialysis system may include a carriage arranged to receive the one or more lines each having a connector end and a cap. The carriage may move along a first direction so as to move the connector ends of the one or more lines along the first direction, and a cap stripper may be arranged to engage with the caps on the solution lines on the carriage. The cap stripper may move in a second direction transverse to the first direction, as well as to move with the carriage along the first direction.

This disclosure relates to medical fluid cassette leak detection methods and devices. In some implementations, a method of detecting micro-leaks in a medical fluid cassette, the method includes decreasing a pressure between a vacuum reservoir of a medical treatment machine and a membrane of the medical fluid cassette when the medical fluid cassette is coupled to the medical treatment machine; measuring, using a flow meter, a rate of net fluid flow between the vacuum reservoir and the membrane of the medical fluid cassette; determining that the rate of net fluid flow between the vacuum reservoir and the membrane of the medical fluid cassette is above a threshold value; and in response to determining that the rate of net fluid flow is above the threshold value, causing the medical treatment machine to take a particular action.

A method that includes pumping medical fluid out of or drawing medical fluid into a chamber of a medical fluid cassette, calculating a theoretical volume of fluid pumped out of or drawn into the chamber, and multiplying the theoretical volume of fluid pumped out of or drawn into the chamber by a correction factor to determine a corrected volume of fluid pumped out of or drawn into the chamber.

A dialysis machine (e.g., a peritoneal dialysis (PD) machine) can include a safety feature that enables the dialysis machine to automatically identify the connections made by a user in preparation for treatment. A smart connector is disclosed that uses a split RFID device that is operational when a first portion of the connector is mated to a second portion of the connector, and is not operational when the first portion is disconnected from the second portion. In an embodiment, the split RFID device incorporates an RFID chip in the first portion of the connector and an antenna in the second portion of the connector. In an embodiment, the RFID chip can store a tag that encodes information that indicates a formulation or a volume of a dialysis bag connected to the ports of a disposable cassette such that the dialysis machine can automatically discover the configuration of the dialysis setup.

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 source. The dialysate may flow from the dialysate source through a cartridge or cassette (e.g., a disposable cartridge or cassette) positionable within the dialysis machine. The dialysis machine includes a piston or pump for pumping fluid (e.g., dialysate) from the cassette to the patient. In various embodiments, the dialysis machine includes one or more sensors for monitoring a condition. For example, the dialysis machine may include sensor(s) for monitoring proper alignment of the cassette within the cassette compartment, or sensors mounted on the pump head for monitoring a leak during a dialysis operation, or sensors for monitoring improper operation of the pumps (e.g., pistons), or a combination thereof.

A dialysis machine (e.g., a peritoneal dialysis (PD) machine) can include a safety feature that is used to isolate individual fluid lines attached to a disposable cassette. The PD machine can include an interface for a disposable cassette, a plurality of safety mechanisms, and a processor. A plurality of fluid lines are connected to the disposable cassette, and each safety mechanism corresponds to a particular fluid line in the plurality of fluid lines. The processor is configured to detect a hazard condition, such as a loss of power to the PD machine or leak in the disposable cassette, and activate one or more safety mechanisms to isolate corresponding fluid lines connected to the disposable cassette. In one embodiment, the safety mechanisms are spring-loaded clamping mechanisms configured to compress a distensible tube connected to the fluid line. In another embodiment, the safety mechanisms include relay solenoids and/or check valves.

A system for performing a dialysis treatment includes a dialysis fluid machine; a disposable dialysis fluid carrying member operable with the dialysis fluid machine; and a venting filter provided by the disposable member, the venting filter positioned and arranged to be coupled along with the disposable member to the dialysis fluid machine to perform the dialysis treatment and to vent air from the disposable member.

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.

The present disclosure relates to a blood treatment apparatus having of each at least one control device; one user interface; one receiving section for releasably receiving an organizer, wherein the organizer comprises components releasably connected thereto for the extracorporeal blood treatment options, in particular dialysis method being executable by the blood treatment apparatus, wherein the blood treatment apparatus comprises in particular in the area of its reception section or in the area corresponding thereto a device for the releasable fastening or fixing of the organizer (on)to the blood treatment apparatus and/or at least a device for acting on components of an organizer which is releasably received in or on the receiving section. Furthermore, an organizer is specified.

Components for a medical infusion fluid handling system, such as an APD system, in which one or more lines (such as solution lines), spikes or other connection ports may be automatically capped and/or de-capped. This feature may provide advantages, such as a reduced likelihood of contamination since no human interaction is required to de-cap and connect the one or more lines, the spikes or the other connection ports. For example, a fluid handling cassette may include one or more caps that cover a corresponding spike and include a raised and/or recessed feature to assist in removal of the one or more caps from the cassette. A solution line cap may include a hole and a recess, a groove or other feature to engage with a spike cap and enable removal of the spike cap.