A medical syringe useful for administering an injection or withdrawing a bodily fluid, the syringe comprising a barrel, plunger assembly and a needle assembly having a selectively retractable needle, the plunger assembly further comprising a plunger handle with a plunger seal and a front tip extending forwardly of the plunger seal to extend through the barrel and into the an annular fluid seal disposed in a recess between the barrel and a forwardly projecting needle, thereby reducing dead space inside the syringe and helping anchor the annular fluid seal inside the recess.

A system for injecting includes a syringe body defining a proximal opening and a distal needle interface. The system also includes a plunger member defining a plunger interior and configured to be manually manipulated to insert a stopper member relative to the syringe body. The plunger member includes a needle retention feature disposed in the plunger interior, an energy-storage member disposed in the plunger interior, and an energy-storage member latching member disposed in the plunger interior. The system further includes a needle hub assembly coupled to the distal needle interface of the syringe body. The needle assembly includes a needle having a needle proximal end feature, a hub, and a needle latching member configured to couple the needle to the hub. The needle is retractable into plunger interior upon manipulation of the plunger member to actuate the energy-storage member latching member.

A cannula capture mechanism is described herein. The capture mechanism may include an inner housing, outer housing, and a cannula. The outer housing may be configured to move between a compressed and a decompressed state. An outer surface of the inner housing may include one or more interlock components. When the cannula is exposed from a distal end of the inner housing, the one or more interlock components may interact with one or more interlock surfaces formed in another surface of the catheter device. When the cannula is retracted proximally within the inner housing, the inner housing may contract radially inward causing the one or more interlock components to be separated from the one or more interlock surfaces and the outer housing to move to the decompressed state and extend distally over a distal portion of the inner housing.

An autoinjector housing includes a cylindrical case enclosing an interior space capable of accommodating an autoinjector mechanism, a cylindrical cap removably attachable to the cylindrical case, and optionally a cylindrical overmolding. An exterior cross-sectional shape of the cylindrical case is oblong along at least a portion of its axis. An exterior cross-sectional shape of the cylindrical cap may be varied along its axis such that there is a gradual decrease in cross-sectional area from an open end toward a closed end and a step-up in cross-sectional area approaching the closed end. An end of the cylindrical case may be covered by the cylindrical overmolding, which may have non-uniform radial thickness and may be made of a material having elasticity.

The single-use safety syringe having a manual and/or automatic retracting needle preventing re-use thereof comprises a needle, a piston with a tightening seal and a cylindrical body having, at an end thereof, a connector provided with a calibrated attaching hole for the needle and open, at another end thereof, for inserting the piston, comprising, internally of the cylindrical body, a separating seal of a first chamber comprised between the separating seal and the connector in which a first active ingredient is positioned and a second chamber comprised between the separating seal and the tightening seal in which a second active ingredient is positioned, the separating seal having a connecting channel between the first and second chamber, closed by a pressure limiting valve, first engaging means further being provided, activatable for engaging the separating seal to the needle and second engaging means activatable for engaging the separating seal to the piston.

An implant injection device includes an injection needle, a receiver housing receiving at least a first implant and a second implant, an injection mechanism, including a pushing rod arranged upstream from the implants and configured to push the implants through the injection needle between an initial position and a final position in which the implants are injected, a pushing device for pushing on the pushing rod, configured to exert a force to move the pushing rod from the initial position to the final position, an intermediate stop device holding the pushing rod in an intermediate position and opposing the force exerted by the pushing device when a stroke of the pushing rod reaches a predetermined distance corresponding to a length of injection of the first implant, and an actuator for actuation by a user, configured to release the pushing rod from the intermediate position to the final position.

A patch pump system that has an electronic assembly, a reservoir for containing a fluid, and an inserter for selectively transitioning a needle from a retracted position to an extended position. The inserter provides a fluid channel that selectively fluidly couples a distal tip of the needle to the reservoir. The needle is at least partially deformed as it transitions from the retracted position to the extended position and the electronic assembly selectively distributes fluid from the reservoir to the distal tip of the needle.

Various embodiments pertain to syringes having needles that automatically retract, and including syringe assemblies in which there is a means for damping any impact of the retracting needle, slowing the retracting needle, dissipating the kinetic energy of the needle, or the like, so as to lessen any jolt or disturbance experienced by the user.

The disclosure relates to a device for creating an intradermal channel in a skin tissue of a patient, with a thread. The device can include a main body, a penetration element, and a displacement mechanism. The main body can have a lumen. The penetration element can be at a distal end of the main body and have a cannula which is configured to contain the thread in its entirety. The displacement mechanism can have at least a portion thereof permanently contained within the lumen of the main body. The displacement mechanism can be configured to effect a relative motion between the cannula and the thread, thereby to expose at least a portion of the thread to a patient's tissue within an intradermal channel.

Apparatus and methods for a single, handheld device that provides for both insertion of a catheter and collection of a fluid. Some embodiments further include a needle that assists in the insertion of the catheter into a blood vessel, and which includes a retraction feature that protects the user from an accidental needle stick when the device is ready for disposal. Still further embodiments include a protective cover that prevents a user from accidentally being stuck by a second needle used for the introduction of the patient's blood into a collection device.