A wearable drug delivery device and related methods are described. The wearable drug delivery device can include: a housing; a flexible bag disposed within the housing; a cannula in fluid communication with the flexible bag; and a pumping mechanism for forcing a drug from the flexible bag and into the cannula, wherein the pumping mechanism is proximate the flexible bag and includes a spring-loaded paddle or a driving bag.

A wearable drug delivery device and related methods are described. The wearable drug delivery device can include: a housing; a flexible bag disposed within the housing; a cannula in fluid communication with the flexible bag; and a pumping mechanism for forcing a drug from the flexible bag and into the cannula, wherein the pumping mechanism is proximate the flexible bag and includes a spring-loaded paddle or a driving bag.

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.

Embodiments of the present invention utilize a closed-loop feedback control system to ensure accurate drug delivery. This control system may, for example, utilize a flow sensor to measure the volume of delivery and an intelligent control algorithm to anticipate and compensate for overdoses and underdoses. Feedback control systems in accordance herewith can be applied to any piston- or plunger-driven pump system utilizing sensors that measure flow directly or indirectly. In some embodiments, adjustments are made during a “priming” stage when liquid is pumped through the internal fluid path but does not exit the pump.

Embodiments of the present invention utilize a closed-loop feedback control system to ensure accurate drug delivery. This control system may, for example, utilize a flow sensor to measure the volume of delivery and an intelligent control algorithm to anticipate and compensate for overdoses and underdoses. Feedback control systems in accordance herewith can be applied to any piston- or plunger-driven pump system utilizing sensors that measure flow directly or indirectly. In some embodiments, adjustments are made during a “priming” stage when liquid is pumped through the internal fluid path but does not exit the pump.

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.

An orientation independent delivery device. The delivery device includes a gas chamber, a delivery chamber, a gas cell, and a delivery aperture. The gas chamber includes a gas-side rigid portion and a gas-side flexible barrier. The gas-side flexible barrier is sealed to the gas-side rigid portion. The delivery chamber includes a delivery-side rigid portion and a delivery-side flexible barrier. The delivery-side flexible barrier is sealed to the delivery-side rigid portion and is oriented adjacent to the gas-side flexible barrier. The gas cell is coupled to the gas-side rigid portion of the gas chamber. The gas cell increases a gas pressure within the gas chamber to expand the gas-side flexible barrier. Expansion of the gas-side flexible barrier applies a compressive force to the delivery-side flexible barrier allowing a delivery material to escape from the delivery chamber.

The present invention concerns a device for injecting a liquid product contained in a bag, the device comprising a housing consisting of two half-shells articulated about an axis of rotation in order to allow the relative movement of the half-shells relative to each other between: —an open position in order to put the bag in place and—a closed position for injecting the liquid product contained in the bag, remarkable in that: —one of the half-shells comprises a deformable bladder—called the “active bladder”—having a volume that varies under the action of a hydraulic ram supplying said bladder with hydraulic fluid, and—the other of the half-shells comprises a deformable damping cushion having a constant volume—called the “passive cushion”.

An assembly and a system suitable for dispensing liquid from a compressible bag, such as for IV treatment of a patient. The assembly includes an apparatus and a flexible mat. The apparatus includes a housing with a dispensing end and an opposite rear end, a floor comprising a flat floor surface, a pair of parallel guiding tracks and a roller arrangement including a roller body. The roller arrangement has a first roller arrangement end and a second roller arrangement end respectively engaged with the respective guiding tracks. The mat has a first mat end, which is mounted to or adapted to be mounted to the roller body and the mat is located at least partly on the flat floor between the guiding tracks.

The problem of infusing air into IV tubing and into a patient from a IV fluid bag inside a pressure infusion cuff is solved by collar embodiments that inhibit the air from being forced into the IV tubing. A collar can include one or more curved arms that create a channel in which that part of the fluid bag is protected against being squeezed by a pressure infusion cuff. A collar allows the fluid bag to be squeezed by the pressure infusion cuff until such time that the fluid level is sufficiently reduced that the collar can inhibit further pressure on the fluid bag by the pressure infusion cuff. Also disclosed is a fluid bag and a pressure infusion cuff that are modified to have a collar incorporated therewith.