Air-in-line sensor systems and methods of using same are provided. The system includes an adapter (60) including first and second cylindrical portions defining a fluid flow channel, the first cylindrical portion comprising two adjacent wedge-shaped protrusions (68). Each wedge-shaped protrusion is infrared transmittive and defines an outer surface and an inner surface. The system further includes a tube and an infrared reflective sensor having an infrared light emitter (42,52) and an infrared light detector (44,54). The infrared light emitter and the infrared light detector are positioned at or near an adapter so that an infrared light can be transmitted to the adapter and at least a portion of the infrared light reflected off the adapter can be detected by the infrared light detector.

A drug delivery device adapted to receive a drug-filled cartridge (10), comprising dose setting means allowing a user to set a desired dose of drug to be expelled, an electronic controller (70,270) adapted to control a motor (51) to move a drive member to thereby expel an amount of drug from a received cartridge corresponding to a set dose, and means for estimating the amount of free air in a loaded cartridge. The controller is adapted to detect an error state if the estimated amount of free air in the cartridge is larger than or equals a given percentage of the amount of drug corresponding to a set dose.

A single plate capacitive bubble detection sensor. The detector may employ a single active plate. A parasitic capacitance of the active plate relative to the environment may be monitored without reference to any particular ground source. In this regard, highly sensitive measurements may be made of a tube disposed adjacent to the active plate to detect, for example, the presence of air, liquid, or a change between liquid and air in the tube.

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.

An infusion pump includes inlet and outlet valves and a squeezing element configured to squeeze a fluid line coupled to the infusion pump. A method includes at least one round of valve operation check prior to initiation of a delivery session of fluid to a subject, and subsequently, after an intake phase and before a delivery phase of at least one infusion pump cycle, determining for the at least one pump cycle, an absolute amount of air in the fluid line. The valve operation check and the determining of the amount of air each include: (A) closing the inlet valve to confine a section of the fluid line between the inlet and outlet valves; (B) squeezing the confined section; (C) measuring the pressure within the confined section; and (D) subsequently, relieving the pressure in the confined section. Other applications are also described.

A pump including a disposable component including a disposable component inlet port coupled to a first disposable conduit in fluid communication with a fluid medium source, wherein the first disposable conduit includes a disposable piston pump assembly and a disposable bubble eliminator, and the first disposable conduit is in fluid communication with a disposable component outlet port, wherein the disposable bubble eliminator is in fluid communication with a lumen of the first disposable conduit and is operable to reduce a gas content of a fluid medium; wherein the disposable piston pump assembly is operable to pump the fluid medium from the disposable component inlet port, through the first disposable conduit and the disposable bubble eliminator, to the disposable component outlet port; and a reusable component including a reusable movable stage operable to compress the disposable piston pump assembly; and a reusable mechanical actuator operable to drive the movable stage.

Improvements in an infusion unit are disclosed. The infusion unit is a portable pump that can be used with patient that have wrist access or decubital PICC/MID-LINES without the risk of line accidently getting pulled. The infusion unit is in the shape of a conveniently shell that has an appearance of an arm cast. There are no hoses that extend beyond the body of the infusion unit and any vein penetration is completely covered under the body of the infusion unit. The secure enclosed unit prevents unauthorized tampering and entry into the unit. The medication dosing can be remotely monitored, fusion resumed, changed by nursing and the patient. The infusion unit has a wireless connection to a network to adjust medication and monitor vital signs, namely heart rate, O2 level and blood pressure that can be monitored and recorded for review.

Dialysis machines and methods for operating dialysis machines (e.g., peritoneal dialysis machines) may include delivering dialysate to a patient and detecting a temperature of a volume of the dialysate, an air content of the dialysate volume, or another condition, or combinations thereof, wherein the detected temperature of the dialysate volume is compared to a predetermined maximum temperature, the detected air content of the dialysate volume is compared to a predetermined maximum air content and the detected other condition generates a signal. The volume of dialysate may be diverted in response to the detected temperature exceeding the predetermined maximum temperature, the air content exceeding the predetermined maximum air content, or the other condition generated signal, or combinations thereof.

To detect air in a fluid delivery line of an infusion system, infusion fluid is pumped through a fluid delivery line adjacent to at least one sensor. A signal is transmitted and received using the at least one sensor into and from the fluid delivery line. The at least one sensor is operated, using at least one processor, at a modified frequency which is different than a resonant frequency of the at least one sensor to reduce an amplitude of an output of the signal transmitted from the at least one sensor to a level which is lower than a saturation level of the analog-to-digital converter to avoid over-saturating the analog-to-digital converter. The signal received by the at least one sensor is converted from analog to digital using an analog-to-digital converter. The at least one processor determines whether air is in the fluid delivery line based on the converted digital signal.

A method that includes receiving, in a medication delivery module, a command to start a medication delivery from a first control module coupled to the medication delivery module, is provided. The command to start the medication delivery is based on clinical information received at the first control module. The method includes recording, in a memory of the medication delivery module, an update of the medication delivery, receiving an indication that the medication delivery module was decoupled from the first control module, and receiving an indication that the medication delivery module has become coupled with a second control module. The method also includes communicating, in response, with the second control module, to update the clinical information. A system and a non-transitory, computer readable medium storing instructions to perform the above method are also provided.