An incremental syringe configured for displacement of fluid, such as medicaments is disclosed. The syringe may comprise detents on the syringe plunger configured to provide tactile feedback, audible feedback, or both, for discrete units of fluid aspirated or injected to or from the syringe. In some embodiments, a second set of detents is included, and in some embodiments a third set of detents is included.

A medication injecting apparatus has a cartridge housing and a drive housing that is threadedly connected to the cartridge housing for axial displacement relative to one another. The drive housing has a helical-shaped passage and a flexible drive member is slidingly disposed within the helical-shaped passage and extends axially outwardly therefrom toward the cartridge housing. The flexible drive member is movable in the axial direction relative to the drive housing during dose setting and is axially fixed relative to the drive housing during injecting. A clutch has an engaged position and a disengaged position. The flexible drive member is axially fixed relative to the drive housing when the clutch is in the engaged position and the flexible drive member is movable relative to the drive housing when the clutch is in the disengaged position.

An injector includes a needle movable from a retracted position to an injection position. A rotary biasing assembly is stabilized in a stored energy state and releasable into an energy releasing state and includes a cam. A cam follower couples the rotary biasing assembly with the needle and is configured to transform rotation of the rotary biasing assembly in the energy releasing state thereof into translation of the needle from the retracted position to the injection position. An activation switch is rotatable from an unactivated position, stabilizing the rotary biasing assembly in the stored energy state thereof, to an activated position, releasing the rotary biasing assembly into the energy releasing state thereof. An activation button is movably mounted to the injector housing and is translatable from an unactuated position to an actuated position, whereby the translation rotates the activation switch from the unactivated position to the activated position thereof.

The present invention relates to a drug delivery device comprising a dose setting member (70) for setting user variable doses of a medicament and a display for indicating the dose set by the dose setting member (70). The display comprises a number wheel (100), which is rotationally coupled to the dose setting member (70) and is provided with a series of markings on its outer circumference, and at least one prism (90) deviating the image of the markings of the number wheel (100), e.g. by 90°.

A fluid delivery device comprises a fluid reservoir for containing medicament. The fluid reservoir is sealed proximate one end with a sliding seal piston. A delivery path is configured to fluidly couple the fluid reservoir and a patient wearing the fluid delivery device. A basal engine mechanism is configured to directly or indirectly move the sliding seal piston in the fluid reservoir at a controlled basal rate. A bolus mechanism configured to move the basal engine relative to the fluid reservoir and directly or indirectly move the sliding seal piston in the fluid reservoir a discrete bolus amount at a time.

Various handheld medical dispensing configurations and methods including the following: Handheld medical dispensing system comprises a syringe, which has a plunger, releasably mounted to syringe actuation apparatus, the apparatus having an actuator configured such that it can move the plunger more than once to dispense a plurality of amounts of substance from the syringe and having a housing adapted for singled handed administration of an injection.

Various handheld medical dispensing configurations and methods including the following: Handheld medical dispensing system comprises a syringe, which has a plunger, releasably mounted to syringe actuation apparatus, the apparatus having an actuator configured such that it can move the plunger more than once to dispense a plurality of amounts of substance from the syringe. A method of dispensing fluid from a syringe comprises holding a medical substance delivery system including a syringe, which has a needle, and which is secured to syringe actuation apparatus configured to dispense predetermined amounts of the substance from the syringe, penetrating the needle at one patient site and using the apparatus to deliver a predetermined amount of the substance, and penetrating the needle at another patient site and using the apparatus to deliver a predetermined amount of the substance.

A mechanism for preventing setting of a dose, which exceeds the amount of a medicament in a reservoir in an injection device. The device can contain a threaded piston rod, a limiter and a driver. The three elements can be arranged such that during dose setting, the limiter is moved towards an end-of-content position, wherein dose setting is limited. The invention contains an accumulative and a non-accumulative embodiment. The invention further relates to a mechanism for preventing ejection of a dose exceeding the set dose.

A syringe including a barrel having an internal reservoir for containing a volume of medication, a plunger received within the barrel and axially movable relative thereto to change the volume of medication in the reservoir, and a dosage indicator movable with the plunger, the dosage indicator in contact with the barrel such that at least one of an audible alert and a tactile alert is produced upon movement of the dosage indicator relative to the barrel.

An automatic medication injection device (20) including injecting progress indicators (82-85) visible along a periphery of the device housing (23). The injecting progress indicators include a flag element (100) which is movable as a drive mechanism (60) of the device advances a sealing plunger (58) within a container of medication (50). The injecting progress indicators are configured to indicate sequentially during a single injection as the flag element moves to cooperatively complete different injecting progress indicators at different times during the single injection, whereby injecting progress of the injection may be monitored by a user.