An electric injection device at least comprises an outer case, a drive mechanism, a transmission mechanism, a linkage mechanism and a push mechanism. The drive mechanism, the transmission mechanism, the linkage mechanism and the push mechanism are all assembled in the outer case, and the drive mechanism is used to drive the transmission mechanism. The transmission mechanism can transmit power to rotate a push block regularly and drive a brake end of the linkage mechanism continuously. The push mechanism comprises at least a pushing shaft and a pushing element. The brake end can continuously push the pushing element, and the pushing element propels the pushing shaft to further push a syringe assembled on the outer case, so as to use electric injection instead of manual injection to complete the syringe.

The invention relates to a piston rod drive arrangement for an injection device used for self-administration of a plurality of individually set doses. The drive arrangement is made from a first element (10) mating the non-circular cross-section (3) of a piston rod (1) and a second element (20) having an inner thread (21) mating the outer thread of the piston rod. Whenever the first element (10) and the second element (20) are rotated in relation to each other the piston rod (1) is moved in an axial direction. In order to minimise the play in the threaded connection a resilient element (23) is proved to apply a force to the piston rod (1) in a longitudinal direction.

A crawling mechanism for a drug delivery device has a central longitudinal axis and is arranged to crawl in an axial direction. The crawling mechanism includes a housing and one or more swing members pivotally coupled to the housing that are arranged to swing relative to the housing between an initial position and a terminal position suitable for urging crawling of the mechanism.

A medicine injection pen includes a rotatable drive member and a rotary encoder associated with the drive member. The rotary encoder is configured to determine an amount of liquid medicine dispensed based on a rotational orientation of the drive member.

A device for administering needle-free subcutaneous treatment to a patient comprises an actuator configured to deliver a plurality of volumes of a treatment at a plurality of locations on a body of the patient; at least one imaging device configured to detect a movement of the needle-free device from a first location on the body of the patient to a second location on the body of the patient; and a processor configured to determine the second location on the body of the device relative to the first location from the movement of the needle-free device relative to the first location on the body, the processor further configured to determine a volume of the plurality of volumes of the treatment to deliver to the body of the patient at the second location.

A medicine injection pen includes a rotatable drive member and a rotary encoder associated with the drive member. The rotary encoder is configured to determine an amount of liquid medicine dispensed based on a rotational orientation of the drive member.

A computerized electro-mechanical drug delivery device configured to deliver at least one dose of two or more medicaments. The device comprises a control unit. An electro-mechanical drive unit is operably coupled to the control unit and a primary reservoir for a first medicament and a secondary reservoir for a fluid agent, e.g. a second medicament. An operator interface is in communication with the control unit. A single dispense assembly is configured for fluid communication with the primary and the secondary reservoir. Activation of the operator panel sets a first dose from the primary reservoir and based on the first dose and a therapeutic dose profile, the control unit is configured to determine a dose or range of the fluid agent. Alternatively, the control unit determines or calculates a dose or range of a third medicament. Further, a dispense interface for use with a drug delivery device is disclosed.

A method of administering subcutaneous treatment to a patient is provided. The method includes delivering, by a needle-free injection device, a first volume of a treatment at a first location on a surface of a body of the patient; detecting a movement of the needle-free injection device relative to the first location; determining, from the movement of the needle-free injection device relative to the first location, a second location of the needle-free injection device relative to the first location; determining a second volume of the treatment to deliver at the surface of the body of the patient at the second location; and delivering, by the needle-free injection device, the second volume of the treatment at the second location on the surface of the body of the patient.

The present disclosure relates to a dose detection system for use in combination with a medication delivery device in which a dose setting member rotates relative to an actuator during dose delivery. The dose detection system includes a module which is removably attached to the medication delivery device. The module includes a dosing component attached to the actuator during dose delivery. The dosing component includes a light source and a light sensor. A sensed element is attached to the dose setting member and includes surface features detectable by the light sensor.

Implementations of the present disclosure are directed to a medical handheld device that includes an actuating feature configured to generate a trigger signal, a sensor configured to detect a functionality of the medical handheld device in response to the trigger signal, and a haptic source configured to generate a haptic signal including information associated with the functionality of the medical handheld device.