A syringe pump includes a lead screw, a motor, and a sliding block assembly. The lead screw has threads and the motor is coupled to the lead screw to rotate it. The half-nut housing has a half nut and a barrel cam. The half nut is disposed within the half-nut housing. The half nut has half-nut threads at an end adjacent to the lead screw void. The half nut engages or disengages with the threads of the lead screw. The half nut includes a half-nut cam-follower surface and a half nut slot. The barrel cam is disposed within the half-nut housing and engages with the half-nut cam-follower surface. The barrel cam includes a pin to fit within the half nut slot such that the barrel cam rotates between a first position and a second position to actuate the half nut between the engagement position and the disengagement position, respectively.

A user-initiated fluid pathway connection includes: a connection hub, a piercing member, a sterile sleeve, and a drug container having a cap, a pierceable seal, a barrel, and a plunger seal, wherein the piercing member is initially retained within the sterile sleeve between the connection hub and the pierceable seal of the drug container. The connection hub may include an internal aperture within the connection hub which functions as a flow restrictor and wherein a piercing member is connected to one end of the internal aperture and a fluid conduit is connected to another end of the internal aperture. A drug delivery pump with integrated sterility maintenance features includes a housing, upon which an activation mechanism, an insertion mechanism, a fluid pathway connection as described above, a power and control system, and a drive mechanism connected to a drug container are mounted. Methods of assembly and operation are also provided.

Various fluid delivery systems are described comprising an infusion pump having a housing with a first opening and a hollow interior portion that is configured to receive a cartridge having a tubing. A pump unit can be disposed within the housing. The pump unit comprises a motor mechanically coupled with a crank shaft or eccentric cam that is configured to move a set of pistons or other objects to thereby compress one or more portions of the tubing over time as the crank shaft or eccentric cam rotates.

A wearable infusion pump allows a user to insert a program key into a housing of the pump to select a continuous dosage rate. Program keys are shaped to close contacts on a printed circuit board within the housing to communicate the selected dosage rate to a microprocessor. In this way, a single disposable pump, sold with one Stock keeping unit (SKU), can be used to deliver a plurality of dosage rates. The disposable pump is provided with an on-board display and a one-button on-board user operable control. In preferred embodiments, the infusion pump according to the invention may be used for continuous delivery of insulin in management of Type II diabetes.

The invention concerns an injector device (100), comprising access means (110, 115) configured to selectively allow and prevent a cartridge (120) storing a pharmaceutical product (122) from being removed from the injector device (100), a self-test unit (130) configured to cause a self-test of at least one of an electronic component and an electronic assembly of the injector device (100), and a control unit (140) configured to control the access means (110, 115) to allow the cartridge (120) to be removed from the injector device (100) in case the self-test has failed.

A patch pump system that has an electronic assembly, a reservoir for containing a fluid, and an inserter for selectively transitioning a needle from a retracted position to an extended position. The inserter provides a fluid channel that selectively fluidly couples a distal tip of the needle to the reservoir. The needle is at least partially deformed as it transitions from the retracted position to the extended position and the electronic assembly selectively distributes fluid from the reservoir to the distal tip of the needle.

A modular fluid delivery system is disclosed which comprises at least one supply station for supplying at least one fluid, and a pressurizing unit for pressurizing said at least one fluid, said pressurizing unit comprising at least one driving unit and at least one disposable pump module assembly. The disposable pump module assembly comprises at least one disposable pump module and a fluid circuit tubing. The disposable pump module comprises a supporting element which defines at least one chamber, at least one inlet fluid circuit pathway, at least one outlet fluid circuit pathway and at least one recirculation fluid circuit pathway. The fluid circuit tubing comprises at least one inlet fluid circuit tubing, at least one outlet fluid circuit tubing and at least one recirculation fluid circuit tubing.

The present invention provide a puncture instrument capable of administering (supplying) a drug solution. The puncture instrument includes a puncture tip section (2); a first tubular body (3) connected to the puncture tip section (2) at the distal end; and an outer tubular body (5) at least partially covering the first tubular body (3). The first tubular body (3) is formed to be rotatable around an axis along the longitudinal direction. The first tubular body (3) has an outer diameter smaller than an inner diameter of the outer tubular body (5). A drug solution supply path (5a) is provided on the outside of the first tubular body (3).

A system and method for correcting a volume of fluid delivered by a fluid injector during an injection procedure is described. The method included determining and compensating for a volume factor associated with compliance of the fluid injector system and correcting for the volume by one of over-driving the distance that the drive member travels in a fluid reservoir, under-driving the distance that the drive member travels in the fluid reservoir, or lengthening or shortening a fluid delivery time.

A wearable fluid metering device for delivering medication subcutaneously, intramuscularly or intravenously to a patient, includes a polymer actuator pump. The polymer actuator pump is flexible so it will conform to shape and yet can be used to rapidly displace a volume within a confined area. The actuator is much faster than prior art polymer actuator designs and can be actuated in multiple ways including introduction and hydration of the polymer matrix by a solution or the actuator can be actuated via pH change while it is in solution. The pH change can be made via electrical current such as that used in electro chemistry or the pH change can be made via a chemical change introduced to the actuator hydrating solution.