An injection system comprising a syringe barrel; a first sealing element and a second sealing element moveably disposed in the syringe barrel; an injection chamber between them; a puncture element extending from the first sealing element to deliver an injection agent from the injection chamber into a biological space, wherein one or more of the syringe barrel, the first or the second sealing element are configured to prevent proximal movement of the first sealing element past a pre-selected location, while allowing the second sealing element to come in contact with the first sealing element, the system is configured such that, when a force is applied on the second sealing element in a distal direction, in response to a first opposing force, the puncture element advances and in response to a second opposing force, the puncture element remains stationary and the injection agent is conveyed through the puncture element.

The present invention relates to an innovative system which definitively prevents the re-use of syringes with retractable needles, allowing at the same time to fill the tank by means of a mechanical system installed inside the piston. The operation that aims at preventing the re-use of the device takes place through a mechanical system that prevents the return of the piston towards the initial position of aspiration and restricts, therefore, its action in a single direction and prevents the return of the plunger to the initial position of injection and therefore restricts its action in a single direction. Moreover a rotating mechanical transition system prevents the repositioning of the piston in the previously used position. The filling of the container, instead, takes place through the use of a system via a flexible cannula placed inside the piston.

The present invention relates to an innovative system which definitively prevents the re-use of syringes with retractable needles, allowing at the same time to fill the tank by means of a mechanical system installed inside the piston. The operation that aims at preventing the re-use of the device takes place through a mechanical system that prevents the return of the piston towards the initial position of aspiration and restricts, therefore, its action in a single direction and prevents the return of the plunger to the initial position of injection and therefore restricts its action in a single direction. Moreover a rotating mechanical transition system prevents the re-positioning of the piston in the previously used position. The filling of the container, instead, takes place through the use of a system via a flexible cannula placed inside the piston.

An improved system and method for a syringe capable of reducing re-usage and limiting wasted contents. The syringe has a plunger with a plunger plug that extends beyond the barrel of the syringe when the contents are fully dispensed and prevents the plunger from being drawn backward. The plunger may also consist of a two-piece design that separates upon exceeding a predetermined force when attempting to draw the plunger backward after use.

The present invention relates to a disposable syringe for the prevention of reuse, and more specifically to a disposable syringe for the prevention of reuse, which can restrain a plunger from moving after a medicine has been exhausted using the pressure of the plunger, thereby fundamentally preventing the syringe from being reused.

The present invention relates to a disposable syringe for the prevention of reuse, and more specifically to a disposable syringe for the prevention of reuse, which can restrain a plunger from moving after a medicine has been exhausted using the pressure of the plunger, thereby fundamentally preventing the syringe from being reused.