A medical device and system for the administration of a medical substance or for dosing body fluids comprising a rotor, rotating around an axis X-X, operatively connected to an injection device of said medical substance, and a rotor locking/unlocking device mechanically separate from the rotor and integral in rotation therewith. The locking/unlocking device comprises, in one piece, a disc, centered with respect to said axis X-X, from which a plurality of flexible fins radially unravel. The flexible fins are configured to flex around transverse hinges at a connection portion with the disc, and are angularly spaced so as to define gaps between adjacent pairs of fins which prevent interferences between adjacent fins in the respective flexing movement. The flexible fins are associated with ferromagnetic means for the operation of the same fins and locking/unlocking means of the rotation of the disc. The disc and fins are formed from a single plastic body.

Apparatus and methods for medicament delivery. The apparatus may include, and the methods may involve, a delivery device for delivering a target amount of the medicament from a distal end of the device. The device may include a rod for moving a plunger that discharges the medicament from the distal end. The device may avoid or reduce deformation of the plunger during the discharge. The plunger motion may be stopped by detent that interacts with the rod. The apparatus and the methods may provide an operator indication of progress of stages of operation. The device may feature triggers corresponding to stages of medicament displacement from the device, such as pre-delivery stages, including priming.

A syringe includes a dosage setter operatively coupled to a plunger rod and comprising a rotatable body that comprises a set of one or more stops for engaging the set of one or more protrusions of the plunger rod depending on at least a rotational position of the set of one or more stops relative to the set of one or more protrusions, wherein a first rotational adjustment associated with the dosage setter is configured to set a first dosage increment by adjusting a relative axial position between the rotatable body and the plunger rod, and a second rotational adjustment associated with the dosage setting assembly is configured to set a second dosage increment that is larger than the first dosage increment by adjusting a relative rotational alignment between the set of one or more stops and the set of one or more protrusions.

Implementations of the present disclosure are directed to an injection device including: a reservoir including a wall defining a proximal end, a distal end and a tubular side, a plunger rod configured to be movable within the reservoir in a direction from the distal end to the proximal end, a radio frequency (RF) antenna attached to the tubular side and configured to receive an interrogation signal from an external device, and a resonating assembly configured to receive the interrogation signal from the RF antenna and to generate a modulated RF signal having a frequency associated with a position of the plunger rod.

Implementations of the present disclosure are directed to an injection device including: a reservoir including a wall defining a proximal end, a distal end and a tubular side, a plunger rod configured to be movable within the reservoir in a direction from the distal end to the proximal end, a radio frequency (RF) antenna attached to the tubular side and configured to receive an interrogation signal from an external device, and a resonating assembly configured to receive the interrogation signal from the RF antenna and to generate a modulated RF signal having a frequency associated with a position of the plunger rod.

A medication injection pen comprises a dose set knob rotatable with respect to a housing to set a desired injection dose. The dose set knob comprises at least one internal thread. A leadscrew includes a thread element for advancing in a first direction via a corresponding thread engagement. A driver is rotationally fixed to the leadscrew and is rotatable in a first direction to rotate and advance the leadscrew in the first direction. The setback member is rotationally fixed to the driver. The dose stop member is rotationally coupled to the setback member and is axially movable relative to the dose set knob when the dose set knob is rotated relative to the setback member. Axial movement of the dose stop member limits the user from setting a dose that is greater than an injectable volume of medication remaining in a cartridge.

The present specification relates to a syringe comprising a barrel, a plunger moveably arranged within the barrel and a plunger rod for driving the plunger, and a mechanism for providing feedback to a user as the plunger rod is moved relative to the barrel for driving said plunger such that feedback is given to a user as the plunger rod is moved relative to the barrel for driving the plunger. The plunger rod is arranged to drive the plunger such that a predetermined relative movement between at least a portion of the plunger rod and the plunger is allowed. The present specification further relates to a plunger assembly wherein a predetermined relative movement between at least a portion of the plunger rod and the plunger is allowed.

A method and apparatus are provided for use in locating a target region which is situated in the body of a subject, for example for the delivery of drugs. The system includes an assembly for controlling the flow of fluid from a fluid reservoir to a conduit, such as a needle. A sensor detects a characteristic indicative of the fluid pressure in the conduit. The system processes data from the sensor to detect the presence of a pulsatile waveform. A controller may control further operation of the system based on information regarding the presence of the pulsatile waveform and features of the waveform, such as amplitude.

A method and apparatus are provided for use in locating a target region which is situated in the body of a subject, for example for the delivery of drugs. The system includes an assembly for controlling the flow of fluid from a fluid reservoir to a conduit, such as a needle. A sensor detects a characteristic indicative of the fluid pressure in the conduit. The system processes data from the sensor to detect the presence of a pulsatile waveform. A controller may control further operation of the system based on information regarding the presence of the pulsatile waveform and features of the waveform, such as amplitude.

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.