This disclosure includes an apparatus for detecting mating of a cap with a fluid delivery device having a housing, a receptacle, and a sensor. The housing is configured to carry an insulin delivery device having a reservoir of the fluid. The receptacle is provided by the housing having a coupling with a locking recess configured to receive a cap with a sprung locking arm. The pressure sensor is carried by the receptacle proximate the coupling and configured to detect engagement force of the sprung locking arm with the receptacle when mated with the housing. A method is also provided.

A medical device that includes a body configured to store a first substance and a second substance, a shaft extending distally from the body and having a distal end, and a pressure source in fluid communication with the first substance, the second substance, and the shaft. Pressurized medium from the pressure source is configured to deliver the first substance through the shaft and out of the distal end, deliver the second substance through the shaft, separate from the first substance, and out of the distal end, and be delivered through the shaft separate from the first substance and the second substance, and out of the distal end. The pressurized medium mixes the first substance and the second substance externally of the shaft as the first and second substances exit the distal end.

An infusion pump (10) includes a fluid chamber (28) having an outlet valve (34) and a piezo-stack actuator (36) comprising a stack of piezo-electric layers (38). An electronic processor (18) is programmed to operate the outlet valve and the piezo-stack actuator to pump fluid through the fluid chamber at a programmed flow rate.

An automatic injection device with flow regulation. The automatic injection device has an insertion needle configured to be inserted into a patient and a drug container which contains a pharmaceutical product and includes a plunger. The automatic injection device also has a fluid path which fluidly connects the drug container to the patient via an insertion device, a potential energy source, and a regulator configured to restrict release of potential energy and restrict linear movement of the plunger and pharmaceutical product into the fluid path at a proscribed pace. The regulator includes a clock escapement mechanism and a wire and pulley system including a wire coupled to at least one pulley. The potential energy source may be a spring that surrounds the drug container and may be directly coupled to the plunger and the wire such that movement of the spring and the wire is restricted over time.

An integrated closed-loop artificial pancreas includes: a detection module; a program module which is imported into the total daily dose algorithm and the current insulin infusion algorithm; and an infusion module which is connected to the program module. The infusion module includes an infusion tube which is used as the insulin infusion channel, the detecting electrodes are provided on/in the wall of the infusion tube, and the infusion module can infuse insulin required according to the data of the current insulin infusion dose. It takes only one insertion to perform both glucose detection and insulin infusion.

A drug solution administration device includes a drug solution reservoir, a drive unit, a rotation detection unit, and a control unit. The control unit counts the number of rotations of the drive unit from when a rotation sensor value reaches a blockage start threshold value until the rotation sensor value reaches a blockage detection threshold value. Further, the control unit determines that a blockage of a flow path has occurred when the rotation sensor value reaches the blockage detection threshold value, and rotates the drive unit in a direction opposite to a direction in which the drug solution is administered based on the counted number of rotations.

The present disclosure relates to a medicament delivery device. The medicament delivery device comprises a housing, a needle and a reservoir. The needle is configured to project from a distal end of the housing. The reservoir is disposed in the housing and has a flexible wall. The medicament delivery device further comprises a dispensing member and a biasing member. The dispensing member is disposed in the housing and the biasing member is configured to bias the dispensing member to move in an arcuate path relative to the housing such that the dispensing member moves across the flexible wall of the reservoir to dispense medicament from the reservoir when the reservoir contains medicament.

An automatic fluid injection device having an upper body (1) with an injection system (3, 4, 5) controlled by a power supply (7) and that is triggered by a user interface (100); and an insertion mechanism (8, 9) for inserting an injection needle (110); a base body (2) for coming into contact with an injection zone and having a fluid reservoir (6) containing an injection piston (65), and a needle assembly (10) including the injection needle (110). The injection system has an elongated spring metal strip (3) wound on a respective reel (30) before actuation; and a drive mechanism (5) for unwinding the strip (3) against a respective piston (65) so as to perform the injection, and for rewinding the strip (3) on the reel (30) after injection.

A method of dispensing fluid includes three processes. A first one of these processes includes pumping fluid into a resilient variable-volume dispensing chamber. The dispensing chamber is in series with a normally present finite fluid impedance and an output. The impedance is sufficient so as to cause expansion of the dispensing chamber as it receives pumped fluid even while some fluid flows through the output. Another one of these processes includes repeatedly measuring a parameter related to volume of the dispensing chamber over time. A third one of these processes includes controlling the pumping of fluid based on repeated measurements of the parameter to produce a desired fluid flow through the output. A corresponding system for dispensing fluid implements these processes.

A medication delivery patch that is applied to the skin and activated to deliver a medication or other fluid into or through the skin. The patch may be completely mechanically driven, with no electronic components, for low cost, safety, and reliability. Pressing an activation button may set in motion a sequence of mechanical events that result in a needle exiting the patch into the skin of the user, and flow of fluid from an internal pouch in the patch into the user. When delivery is complete, another sequence of mechanical events may occur to retract the needle from the skin and stop the flow of fluid, and to show a visible indicator that delivery is complete. The patch may contain a fluid channel, such as a microfluidic channel, that controls the rate and time of delivery; this channel can be configured or selected for different medications or use cases.