A container which is to be autoclaved has a shiftable plunger that defines a compartment filled with a fluid. The container is confined in a pressurizable chamber and heated so as to change a pressure in the compartment of the container. The pressure in the compartment of the container is monitored and an output corresponding thereto is generated. Pressure in the chamber around the container is continuously varied so as to be generally equal to the instantaneous monitored pressure in the compart...

A hypodermic syringe having a body, an ampoule slidably mounted in said body and containing a liquid to be injected and having a front wall and rear inlet orifice. A needle is slidably carried by said ampoule and has a rear part adapted to pierce said front wall. A closure member for the inlet orifice is slidably mounted in the ampoule, and a plunger tube having an external diameter smaller than the internal diameter of the ampoule is slidably mounted in said body, and the tube is urged toward t...

The present invention relates to improvements in syringes for injecting pasty products, wherein the end of the body thereof comprises a screwed stopper provided with a groove and an oblique channel in the outer opening of which is fixed the endpiece of a needle. To clean the syringe, the stopper is unscrewed and the residue, contained in one piece in the groove and in the channel, is extracted. The present invention is more particularly applicable in dentistry.

A hypodermic syringe capable of pre-filling aseptically from either end. Both ends of the rimmed syringe barrel are sealed and capped with standard vaccine or syringe vial closures and crimped aluminum seals. Both ends of the pre-filled and sealed syringe maintain assured sterility integrity by guaranteed microbe-proof barriers during the entire shelf life of package or container. The syringe is prepared for use by simply removing protective caps or seals. The needle assembly is packaged separat...

A locking system for hypodermic syringes including a barrel and pistons where the barrel contains a plurality of detentes surrounding the piston in the "full in" position. A floating ring slides in a channel on the piston, restraining the detentes from engaging the piston head in the packaged position. In use the floating ring slides away from the piston head allowing the detentes to secure the piston in the "full in" position. Subsequent attempts to withdraw the piston will disengage the piston...

The present invention refers to improvements in disposable items, particularly self-destructing or otherwise automatically non-reusable hypodermic syringes having a self-destructing element which is actuated during the injection stroke of the piston. The invention provides an upper stop member, generally provided by a plate with a circular hole having a diameter permitting withdrawal of the plunger but not the piston and also a cylindrical protuberance adjacent the injection end of the cylinder ...

A single use syringe in which the single use aspects are accomplished by a lumen spike which is forced into the lumen bore to seal the passageway from the syringe body to the hypodermic needle. Fail-safe characteristics to prevent bypassing the single use provisions are provided by having a frangible area of the endwall holding the lumen break out at a force less than that required to force the lumen spike out of the lumen bore. This aspect can also be used to improve other approaches to single ...

A gauge device for a hypodermic syringe may be readily applied to the flanged end of the hypodermic syringe barrel. The gauge device includes a rigid bar which is spaced a predetermined distance from the free end of the plunger of the hypodermic syringe when the plunger is fully extended into the syringe barrel. The bar limits the retractive movement of the plunger from the barrel and therefore limits filling of the hypodermic syringe to a predetermined dosage.

The present invention provides an automated system and method of banding (bandoliering) a plurality of syringes. The system includes a feed device for receiving the plurality of syringe barrels and positioning the plurality of syringes according to a predetermined orientation and an indexed device for transferring the plurality of syringes in the predetermined orientation to a transport device that includes individual pockets for receiving and holding the syringes in a spaced relationship as the...

An apparatus and process for sterile disposal of used syringes is provided. The apparatus includes a heat conductive container for maintaining used syringes and a means for applying heat to the heat conductive container in an amount sufficient to melt the plastic of the syringes. The melted plastic can encapsulate the non-plastic portions of the syringe and form a molten mass. The molten mass is rendered sterile by the heat. The process for sterile disposal of used syringes in this manner is als...