The present invention relates to a drive mechanism for use with a medicament delivery device, comprising a plunger rod (68), a drive spring (72) operably arranged to the plunger rod, an actuator (52) comprising a holding member (60) releasably engaged to the plunger rod (68) for holding said plunger rod (68) with said drive spring (72) in a tensioned state, a rotator (38) operably connected and movable relative to said actuator (52) and configured to interact with said holding member for holding said holding member in engagement with the plunger rod, an activator (30) operably connected to said rotator (38). The invention is characterized in that the activator (30) is configured to rotate and subsequently linearly displace the rotator (38) in relation to the actuator (52) such that said holding member (60) is released from the plunger rod (68).

The present disclosure relates to a rigid sensor stopper adapted for use in a drug delivery device. In one implementation, a rigid sensor stopper may include a transducer, a power source, a rigid molding or casing, and at least one elastomeric seal. The molding may be formed from overmolding or insert molding, and the casing may be formed from injection molding, machining, or forged casing. The at least one elastomeric seal may include at least two o-rings.

Sensing systems are disclosed for determining the relative rotational movements of members of a medication delivery device which are proportional to the amount of a dose set and delivered by the medication delivery device. The sensing system comprises a first sensor component secured to a first member and a second sensor component secured to a second member. During dose setting, the second member is coupled to a third member which rotates relative to the first member in proportion to the dose set. During dose delivery, the second member is coupled to a fourth member which rotates relative to the first member in proportion to the dose delivered. The sensing system separately detects the relative rotational positions of the first and second sensor components during dose setting and dose delivery, and provides outputs used to determine the amounts of the set and delivered doses. The sensing system outputs this information to a controller which determines the amount of the dose set and delivered. Related medication delivery devices and methods are also disclosed.

The present invention provides a power unit (1) for a drug delivery device as well as methods for providing and mounting the power unit (1) in the drug delivery device. The power unit (1) comprises a first interface member (30) extending along a reference axis and comprising a hollow body (31) and a first engagement structure (35), a second interface member (10) comprising a tubular structure (11) extending at least partially through the hollow body (31) and having a skirt (12), and a second engagement structure (14) configured for releasable engagement with the first engagement structure (35), and a torsion spring (20) comprising a first end portion (23) being attached to the first interface member (30) and a second end portion (22) being attached to the second interface member (10), the torsion spring (20) being pre-strained to induce a relative rotational motion between the first interface member (30) and the second interface member (10). The first interface member (30) and the second interface member (10) are configured for relative motion along the reference axis from a first relative axial position in which the first engagement structure (35) and the second engagement structure (14) are engaged to prevent the relative rotational motion between the first interface member (30) and the second interface member (10) to a second relative axial position in which the first engagement structure (35) and the second engagement structure (14) are disengaged. In the first relative axial position of the first interface member (30) and the second interface member (10) the torsion spring (20) is accommodated in a user inaccessible space (39) defined by the hollow body (31) and the skirt (12).

A system for drawing a solution is provided. The system includes a filter, a vacuum source, and an actuator. The filter has an input port, a first output port, a second output port, and a flow path defined in part by the input port and the second output port. The vacuum source is in fluid communication with the first output port and operative to apply a vacuum to the flow path. The actuator is operative to facilitate movement of the solution along the flow path.

A time-of-use activated syringe assembly includes a syringe barrel defining a chamber, a plunger rod having a forward attachment end located within the chamber of the barrel, and a stopper located within the chamber of the barrel and including a rearward end adapted to receive the plunger rod. The stopper includes a first perimetrical skirt extending around an outer circumference thereof and extending toward a front end of the stopper. An activation mechanism is associated with at least one of the stopper and the plunger rod, and the plunger rod is configured for transition between a pre-loaded position in which the activation mechanism is unactivated and a loaded position in which the activation mechanism is activated. Upon activation, the activation mechanism applies a radial force to the first perimetrical skirt causing the skirt to seal against an inner wall of the syringe barrel.

A dispensing device for dispensing medication from a medication container. The dispensing device includes a housing, a drive member engageable with the medication container, at least one first ramp surface fixed relative to the housing, a driver movable within the housing to move the drive member for forcing medication from the medication container, the driver including at least one second ramp surface, and a plunger including at least one push module movable relative to the housing from a ready position to a plunged position. The at least one first ramp surface and the at least one second ramp surface have a complementary configuration to cause the driver to be moved to force medication from the medication container by a driving force applied to the at least one second ramp surface by the at least one push module as the at least one push module simultaneously engages both the at least one first ramp surface and the at least one second ramp surface during movement of the plunger from a ready position to a plunged position.

A feedback mechanism for an injection device that is configured to deliver a medicament to a user is described. The feedback mechanism comprises an actuator and a fluid chamber having a restricted outlet. The actuator is adapted to urge fluid from the fluid chamber through the restricted outlet. The feedback mechanism also has an indicator that is adapted to provide feedback to the user after a predetermined volume of fluid has passed from the fluid chamber through the restricted outlet during use of the injection device.

Systems, devices, and techniques are disclosed for administering and tracking medicine to patients and providing health management capabilities for patients and caregivers. In some aspects, a method includes receiving one or more analyte values associated with a health condition of the patient user; receiving contextual data associated with the patient user obtained by the mobile computing device, where the obtained contextual data includes information associated with a meal; determining a medicine metric value associated with an amount of medicine active in the body of the patient user; autonomously calculating a dose of the medicine without input from the user based at least on the one or more analyte values, the medicine metric value, and the information associated with a meal; and continuously displaying the calculated dose of the medicine.

The present invention relates to injectors, such as pen-type injectors, that provide for administration of medicinal products from a multidose-cartridge and permit a user to set the delivery dose. The injector may include a housing, a piston rod adapted to operate through the housing, a dose dial sleeve located between the housing and the piston rod, and a drive sleeve located between the dose dial sleeve and the piston rod. The dose dial sleeve may have a helical thread of first lead and the drive sleeve may have a helical groove of second lead. The first lead of the helical thread and the second lead of the helical groove may be the same.