A drug delivery device, in the form of an injector, may include one of a number of systems for limiting the delivery of a medical fluid or drug product in case of movement of (e.g., removal of) the injector relative to the patient as determined by a proximity sensor. The drug delivery system may in the alternative or in addition include systems for indicating the amount of medical fluid or drug product delivered (or not delivered) in case of movement of (e.g., removal of) the injector relative to the patient as determined by the proximity sensor. The injector may be, for example, an on-body injector or an hand-held autoinjector.

A jet injector that includes a prefilled syringe. The syringe includes a fluid chamber that contains a medicament. The syringe also has an injection-assisting needle, and a plunger is movable within the fluid chamber. A housing is configured for allowing insertion of the needle to a penetration depth. The housing includes a retractable guard and an interference component, e.g., a lock ring, adjacent to the retractable guard that interferes with the movement of the retractable guard. An energy source is configured for biasing the plunger to produce an injecting pressure to jet inject the medicament from the fluid chamber through the needle to an injection site.

An autoinjector device is provided. The autoinjector device can include an activator unit including an activation housing, an activation guard, and an activation shell such that a portion of the activation guard extends beyond a proximal end of the activation shell. The autoinjector device can include camouflage on a proximal surface to obscure a device lock hole and reduce user confusion around needle orientation.

A puller assembly for removing a shield from around a needle of a syringe. The puller assembly includes a grip component and a cap. The grip component has a tubular body defining an interior hollow which axially receives the shield. The tubular body has a slit that allows it to be forcibly shifted from a first arrangement to a second arrangement to change the size of the interior hollow. The tubular body includes a radial inner face with at least one radial inward projection for directly engaging the shield. The cap is grippable by a user. The grip component is held by the cap when inserted within a cavity of the cap during manufacturing installation, and when so held at least one radial inward projection of the grip component engages the shield for removal of the shield from around the needle when the cap is moved. A method of mounting a puller assembly to a shield around a needle is also disclosed.

A needle actuator assembly for a drug delivery system includes a housing, a needle having retracted and extended positions, a needle actuator body received within the housing and configured to move from a pre-use position where the needle is in the retracted position to a use position where the needle is in the extended position and to a post-use position where the needle is in the retracted position, with the needle actuator having a button contact surface, and an actuator button received by the housing.

An auto-injector for administering a dose of a liquid medicament includes an elongate housing arranged to contain a syringe with a hollow needle and a stopper for sealing the syringe and displacing the medicament, the housing having a distal end and a proximal end with an orifice intended to be applied against an injection site. The syringe is slidably arranged with respect to the housing. A spring capable of, upon activation: pushing the needle from a covered position inside the housing into an advanced position through the orifice and past the proximal end (P), operating the syringe to supply the dose of medicament (M), and retracting the syringe with the needle into the covered position. After delivering the medicament, an activator arranged to lock the spring in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spring for injection.

An apparatus includes a housing, a medicament container, an actuator, and a biasing member. The actuator is configured to move the medicament container within the housing when the actuator is moved from a first configuration to a second configuration. The actuator includes a gas container and a puncturer. When the actuator is in the first configuration, a portion of the puncturer is disposed apart from the gas container. When the actuator is in the second configuration, the portion of the puncturer is disposed within the gas container. The gas container has a longitudinal axis offset from a longitudinal axis of the medicament container. The biasing member is configured to bias the actuator toward the second configuration.

The present invention relates to a medical apparatus, methods and system for fluid medication delivery. The apparatus has a drive mechanism module and a fluid container engaged to the drive mechanism. The drive mechanism includes a resilient member compressed to act against a gasket movably disposed in the fluid container. When extending to its original shape, the resilient member pushes the gasket to move inside the fluid container to eject the fluid out of the fluid container. The fluid container is connected to a flow restrictor tube that allows a predetermined flow rate of medication to be infused or injected to a patient.

This invention relates to a method of identifying an accurate dosage of medicine in a dosage chamber of a syringe including the steps of providing an accurate dosage of a detailed single dosage medicine for insertion into a dosage chamber of a syringe; identifying the accurate dosage of medicine in the dosage chamber by retaining a notifier of the accurate dosage; securing the notifier with the syringe wherein the accurate dosage of medicine in a dosage chamber of a syringe is shown by the details on the notifier when secured with the syringe and allowing usage of the syringe to dispense the accurate dosage.

A device for inserting at least one hollow needle for the injection or withdrawal of a solution into/from a tissue, said device comprising a casing (1), a plunger (2) movably mounted inside the casing, and propulsion means (3 and 4) suitable for driving the plunger towards the distal end (1a) of the device by applying a force F1(t). The propulsion means and/or the plunger comprise retaining means (3a) for joining the propulsion means and the plunger while the latter is moving, said retaining means releasing the plunger from the propulsion means when a force F2(t) is exerted in the opposite direction to F1(t). Pressure means hold the needle in the tissue and allow a controlled withdrawal of the plunger at least while the solution is being injected.