Abstract: An inexpensive injection device is provided which is manufactured of plastic components, and is adapted to fit various syringe sizes. The injection device is spring loaded, and provides a firing barrel which, in the cocked position, is offset slightly from the central bore of the device.When the device is fired, the firing barrel is aligned with the central bore and projects the needle portion of the syringe into the user.For obtaining blood samples, the syringe is replaced by a striker element, which actuates a spring loaded puncture module which punctures the skin and is quickly withdrawn.

Abstract: An inexpensive injection device is provided which is manufactured of plastic components, and is adapted to fit various syringe sizes. The injection device is spring loaded, and provides a firing barrel which, in the cocked position, is offset slightly from the central bore of the device.When the device is fired, the firing barrel is aligned with the central bore and projects the needle portion of the syringe into the user.For obtaining blood samples, the syringe is replaced by a striker element, which actuates a spring loaded puncture module which punctures the skin and is quickly withdrawn.

Abstract: An injector device for a syringe and assembly is disclosed which enables the user to inject a syringe needle to a predetermined depth.The device includes a pipe union bearing upper retaining arms that are adapted to interfit with a plunger of a standard injector syringe. The pipe union is slidably mounted along an inner tube through which the syringe and needle are projected. The pipe union and an attached screw nut form upper and lower shoulders along the inner tube. The pipe union is spring loaded for movement along the inner tube, and this movement is set between the upper and lower shoulders by means of a rotatable firing hammer. The hammer fixes the pipe union and attached syringe in the upper, spring loaded position, and when triggered, the hammer releases the pipe union to the lower position and fires the syringe needle into the user.