Embodiments of the invention include a medicament device configured to provide stepwise instructions for using the device to a user in a particular sequence is provided. The device includes a reusable housing configured to receive a container, the reusable housing including a control interface, the control interface including at least one responsive member reactive to a user input, an actuation member configured to interact with the container, a signal output component associated with the reusable housing; and circuitry associated with the reusable housing configured to control a provision of the stepwise instructions to the user in the particular sequence.

The present disclosure relates to a hair implanter with an automatically retracting needle, and more specifically, to a hair implanter with an automatically retracting needle configured to automatically move a needle backward by a force of a spring when the needle is moved forward to a predetermined position to allow hair transplantation work to be smoothly performed.

The invention relates to a Safe Syringe comprising a barrel, a needle seat and a plunger, wherein the needle seat has a hook rod, a linkage deformation portion and a barrel clamping portion; and the plunger has a rod body, and a hook insertion hole which can be sleeved with the hook rod of the needle seat and compress the linkage deformation portion for elastic deformation such that the barrel clamping portion of the needle seat is not clamped into the seat clamping slot of the barrel, and the hook insertion hole can hook the hook rod of the needle seat to move the needle seat. The Safe Syringe can allow stable positioning and quick pullback of the needle seat and effectively reduce liquid medicine residue.

The present embodiments provide for a syringe and a retraction plunger assembly configured to accept various retractable needle assemblies, which are capable of cooperating to provide a retraction safety syringe. In particular, the syringe includes a barrel and a retraction plunger assembly comprising a control unit attached to a plunger and releasably engaged to a housing, and at least one biasing means disposed within the plunger assembly. Upon completion of dose delivery via a retractable needle, the control unit disengages from housing and the biasing member retracts the plunger and a connected needle into the barrel. Various elements are configured to prevent further use of the syringe. The control unit can be used to control a rate of needle retraction.

A reuse prevention mechanism includes a guidance arm with a pin engaged in a guidance contour adapted to control movement of the guidance pin, and a blocking part adapted to block access to a needle in a fourth position of the reuse prevention mechanism. The guidance contour is adapted to constrict linear movement of the reuse prevention mechanism in a direction from a first position to a third position.

A safe injection system includes an injection system body defining a proximal opening at a proximal end thereof, an injection system body interior, and a needle attachment interface at a distal end thereof. The system also includes a stopper member disposed in the injection system body interior. The system further a plunger member configured to be manipulated to insert the stopper member relative to the injection system body. Moreover, the system includes a needle hub assembly coupled to the needle attachment interface. The needle hub assembly includes a needle hub defining a latch space in a distal end thereof, a needle latch defined by the needle hub in the latch space, and a needle removably coupled to the needle hub by the needle latch.

A system for measuring injection of a liquid medicine includes a syringe body having proximal and distal ends, a syringe interior, and a syringe flange at the proximal end thereof. The system also includes a stopper member disposed in the syringe interior. The system further includes a plunger member coupled to the stopper member and configured to be manipulated to insert the stopper member distally in the syringe interior relative to the syringe body. Moreover, the system includes a needle coupled to the syringe body at the distal end thereof. In addition, the system includes a sensor flange removably coupled to a syringe body. The sensor flange includes a sensor to measure an injection characteristic and a processor to analyze the injection characteristic to determine an occurrence of an injection event.

A safety syringe structure includes a combined structure of a syringe barrel, a needle retreater, a needle, and a plunger. The needle retreater and the plunger are slidably received in the syringe barrel. The needle retreater is arranged adjacent to the front end of the syringe barrel. The needle is coupled to the needle retreater. The plunger has an end extended to form a sharp tip and is provided with a plug facing the needle retreater. The sharp tip extends outside the plug in a direction toward the needle retreater. The sharp tip is movable with the plunger toward the front end of the syringe barrel to pierce into and couple with the through hole of the needle retreater; and the sharp tip is movable with the plunger toward the rear end of the syringe barrel to drive, through the needle retreater, the needle into the channel.

A combination plunger, a mixing device and a mixing syringe including the same are provided. The mixing syringe includes concentric outer and inner barrels that form an outer chamber, the inner barrel having an inner chamber. The combination plunger includes a mixing plunger and a delivery plunger and a biasing means. The mixing plunger is slidably located in the outer chamber and translated by coordinated depression of the delivery plunger to transfer a first substance from the outer chamber to mix with a second substance in the inner chamber. After the mixing stage is complete, the delivery plunger is disengaged from the mixing plunger and permitted, such as by rotation, to be further depressed in the axial direction to deliver fluid contents of the mixing syringe to a recipient. The mixing syringe needle is then retracted as result of engagement by the delivery plunger and activation of the biasing means.

A needle tip shielding device, comprising a base plate with a hole extending there through from the proximal side of the base plate to the distal side of the base plate, and at least one resilient arm extending at an attachment point at said base plate (101) is provided. The resilient arm has a resting state wherein a distal hook of the resilient arm will coincide with a straight imaginary line extending longitudinally through said hole in the axial direction of said base plate. The resilient arm comprises a knob at its distal end, said knob extending laterally from the resilient arm. The knob is shaped with an outer curvature in the transversal plane around an axis parallel to the central axis of the needle tip shielding device and said knob is shaped with an outer curvature in the midsaggital plane around an axis perpendicular to the central axis of the needle tip shielding device.