Disclosed are examples of devices, systems and techniques for delivering a liquid drug. An example delivery pump device may include a chamber body defining a pump chamber, an inlet valve to receive a liquid drug and a hard stop. A plunger configured with a plunger channel. A sliding fluidic member including a needle coupling, a flow orifice, a face seal and an anchor portion that may be movable within the pump chamber. A pump mechanism may be coupled to the anchor portion and operable to pull the anchor portion and the plunger toward the hard stop. Techniques may include determining a time to output a liquid drug from the delivery pump device; generating a control signal to actuate the delivery pump device; applying a control signal to the pump mechanism; determining that a control signal is to be removed from the pump mechanism; and delivering the liquid drug.

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.

A medical treatment system, such as a peritoneal dialysis system, may include a control and other features to enhance patient comfort and ease of use. For example, a cycler device may include a heater bag receiving section and a lid mounted to cover and uncover the heater bag receiving section, potentially enabling faster heating of a dialysate. A user interface may be moveable to be received into the receiving section and covered by the lid, if desired. The system may detect anomalous conditions, such as tilting of a housing of the system, and automatically recover without terminating a treatment. The system may include noise reduction features, such as porting pneumatic outputs to a common chamber, and others. The system may also automatically detect any one of several different solution lines connected to the system, and control operation accordingly, e.g., to mix solutions provided by two or more lines and form a needed dialysate solution. A cassette control surface may be arranged to have one or more ports that can detect a presence of a liquid, e.g., to identify if a cassette is leaking or has otherwise been compromised.

A repeater system may control a pump by using a repeater and a user interface. An adhesive patch system may be used for affixing a pump or other object to a human body. Such an adhesive patch system may include two sets of adhesive members, each member including an adhesive material on at least one side so as to attach to the body. The members of the first set are spaced to allow the members of the second set to attach to the body in spaces provided between the members of the first set, and the members of the second set are spaced to allow members of the first set to detach from the body without detaching the members of the second set. Also, fill stations and base stations are provided for personal pump systems.

A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.

A wearable infusion pump assembly includes a reusable housing assembly, and a disposable housing assembly including a reservoir for receiving an infusible fluid. A releasable engagement assembly is configured to allow the reusable housing assembly to releasably engage the disposable housing assembly. A detachable external infusion set is configured to deliver the infusible fluid to a user.

A control rod for a nuclear fuel assembly is described herein that includes a neutron absorbing material having a melting point greater than 1500° C. that does not form a eutectic with a melting point less than 1500° C., and may further include a cladding material having a melting point greater than 1500° C. The cladding material is selected from the group consisting of silicon carbide, zirconium, a zirconium alloy, tungsten, and molybdenum. The absorbing material is selected from the group consisting of Gd.sub.2O.sub.3, Ir, B.sub.4C, Re, and Hf. The metal cladding or the absorbing material may be coated with an anti-oxidation coating of Cr with or without a Nb intermediate layer.

A medicament delivery device comprises a delivery assembly for transdermally delivering medicament to a patient and a system for providing information on the volume of medicament in the device. The system comprises a sensing unit configured to measure at least one physical parameter dependent on the volume of medicament in the device.

Guided relay infusion systems and methods are provided. The guided relay system may be a portion of an infusion pump that can simultaneously deliver a medical fluid from two syringes. When a first one of the syringes is running out of the medical fluid and a second one of the syringes is more full of the medical fluid than the first one of the syringes, guided relay messages are provided for a relay handoff from the first one of the syringes to the second one of the syringes that ensures a smooth continuous delivery of more of the medical fluid than the first one of the syringes holds.

Apparatus is provided including a therapeutic substance reservoir (24) configured to hold a therapeutic substance (22), and an electromechanical pumping assembly (26). The pumping assembly is shaped to define a pump chamber (28) having (a) a therapeutic substance inlet (30), and (b) a therapeutic substance outlet (32). The pumping assembly includes a plunger (34) disposed such that therapeutic substance in the pump chamber is in direct contact with the plunger, and control circuitry (36) configured to drive the plunger to (a) draw the therapeutic substance into the pump chamber during a first pumping phase, and (b) deliver the therapeutic substance from the pump chamber in a plurality of discrete motions of the plunger during a second pumping phase.