Disclosed is a syringe for a micro-dosing syringe pump. The syringe includes a reservoir having an outlet port; a plunger having a track, with the plunger received inside a portion of the reservoir; a plunger driver comprising a gear connected to one end of a shaft and a pin located adjacent an opposite end of the shaft, with the plunger driver received inside the plunger and with the pin located inside and engaging the track. In use, rotation of the gear in a first direction advances the plunger into the reservoir a first distance as the pin travels in the track and rotation of the gear in a second direction opposite the first direction advances the plunger a further distance into the reservoir as the pin travels in the track. The design prevents excess dosing in a runaway motor failure.

The present disclosure is directed to a dose setting mechanism that may be used with a drug delivery device. The dose setting mechanism may include an inner body having a helical thread along an outer cylindrical surface of the inner body, and a drive sleeve for driving a piston rod in an axial direction, the drive sleeve positioned within at least a portion of the inner body. The dose setting mechanism may further include a dose dial sleeve rotatably engaged with the helical thread of the inner body and a dial grip connected to the dose dial sleeve and releasably connected to the drive sleeve. Further when a dose is set, the dial grip is rotated so that both the dose dial sleeve and the drive sleeve rotate with respect to the inner body.

A drive mechanism for a drug delivery device having a rotationally fixed plunger rod driven by a lead screw. The lead screw engages a free lock which is coupled to a release knob. A dose setting dial cooperates with an inner cylinder using a clutch to establish the axial movement of the plunger rod during dose setting and dispensing.

A fill port for filling a liquid medicament into a reservoir located inside a drug delivery device includes insert fixed in a passage of a wall of the drug delivery device, and a pierceable fill port sealing is sandwiched between the insert and both the housing of the drug delivery device and the reservoir to provide a fluid-tight sealing between the reservoir and the housing.

A modular, semi-disposable patch pump for conducting a medical therapy includes a pump unit releasably connected to a reservoir unit by means of a bayonet connection; and a housing design for supporting both reliability and ease of use of said connection.

A drive mechanism suitable for use in drug delivery devices is disclosed. The drive mechanism may be used with injector-type drug delivery devices, such as those permitting a user to set the delivery dose. The drive mechanism may include a housing, a dose dial sleeve, and a drive sleeve. A clutch is configured to permit rotation of the drive sleeve and the dose dial sleeve with respect to the housing when the dose dial sleeve and drive sleeve are coupled through the clutch. Conversely, when the dose dial sleeve and drive sleeve are in a de-coupled state, rotation of the dose dial sleeve with respect to the housing is permitted and rotation of the drive sleeve with respect to the housing is prevented. In the de-coupled state, axial movement of the drive sleeve transfers force in a longitudinal direction for actuation of a drug delivery device.

A syringe with an injection dose adjustment function, comprising a medicine vial connecting apparatus and an adjustable propulsion apparatus; by means of assembling the medicine vial connecting apparatus and a medicine vial, and then installing the adjustable propulsion apparatus in the medicine vial connecting apparatus and extending same into the medicine vial, a rotating knob of the medicine vial connecting apparatus can drive a push rod of the adjustable propulsion apparatus to move backward to a predetermined scale; at the time of injection, pressing the push rod enables the medicine vial to output a predetermined dosage of medicinal liquid, such that the syringe can adjust the injection dosage according to the requirements of different injection subjects.

A plunging apparatus for a syringe is applied to connect with a driving assembly of an injection device and a medicine vial. The plunging apparatus has a pushing element connected with a connection element by a unidirectional check element. The rear end of the connection element is connected with a pushing rod. The front end of the pushing rod has an ejection element and a spring. A threaded collar is mounted around the pushing rod, and an injection rod is mounted in the pushing rod. The connection element is inserted into a rear opening of the medicine vial. Engagement hooks on the ejection element can be pressed by medicine vial. The spring forces the ejection element to move forward to push the pushing element to abut the piston. Accordingly, the medicine vial can be used immediately after being combined with the injection device without discharging air manually.

This drug solution delivery apparatus includes a pump main body, a cartridge main body having a plunger operation unit, and a controller for controlling a drive unit. The plunger operation unit has a slide nut and a rib for restricting movement of the slide nut. The drug solution delivery apparatus further includes an attachment detection sensor for detecting contact of the slide nut with the rib. The controller causes the drive unit to drive in reverse, and determines whether the cartridge main body is new or previously used on the basis of a detection signal of the attachment detection sensor.

Data collection devices for attachment to injection devices are disclosed. In one embodiment, the data collection device includes: a body attachable to a dial member of the injection device, a sensor arrangement comprising a sensor and a scale, and a processor. The sensor is configured to detect a rotation of the body relative to a trigger of the injection device. The processor is configured to detect a rotation of the body relative to the trigger. One of the sensor and the scale is arranged in or on the body and wherein the other one of the sensor and the scale is located on the trigger or is rotationally lockable to the trigger configured to detect a rotation of the body relative to the trigger.