A medical syringe assembly includes a first opening and a second opening at opposite ends of a tubular barrel having an inner wall. The inner wall includes an inner surface. A stopper having an engagement surface is slidably received in the tubular barrel and includes a portion for engaging the surface of the inner wall of said tubular barrel. A lubricant is disposed over a limited area of at least one member of the inner wall of the tubular barrel and the engagement surface of said stopper, whe...

A method and device for identifying, testing or clearing a prefilled medicinal syringe in which the syringe is inserted into the test device which reads coding on the syringe and has a display as to whether the syringe is appropriate or not.

This invention relates to an improved plunger subassembly for use in a blood gas syringe barrel characterized by a pushrod having a piston on its front end with a hollow interior defining a fluid collection chamber communicating with both the front and rear ends thereof by passageways blocked by a filter that will pass gases but is impervious to fluids. With the plunger subassembly in its passive state, blood and gas entering the syringe barrel from the front is free to enter the collection cham...

The present invention provides prefillable syringes and injectors for use therewith that expand and/or facilitate a variety of medical procedures involving the injection of a liquid medium. In several embodiments, the present syringes and injectors enable the use of current syringe materials at higher pressures than previously attainable or the use of other materials not previously usable with current high pressure-syringe and injector designs. In one embodiment, a syringe comprises an elongated...

A medical device is provided which includes a shield system and a syringe which is coupled to the shield system. The shield system includes a syringe holder and a shield which is slidably coupled to the holder. A spring resiliently urges the shield from a retracted position to an extended position. Stop members are provided on the holder and shield for maintaining the shield in the retracted position. The syringe is slidably coupled to the holder, and extends within the shield. Axial movement of...

A device for destroying hypodermic needles and syringes includes a housing in which a pair of fixed blades are secured at their bases and supported in parallel, spaced apart relationship. A rotating shaft extends through aligned holes in the apices of the blades, and a trio of cylindrical members, each having a cylindrical blade secured thereto, is assembled on the shaft with each cylindrical blade adjacent to a fixed triangular blade. The cylindrical members and cylindrical blades are each prov...

The present invention provides an improved device for preventing the backing up of a nut on a threaded piston rod in the barrel of a hypodermic syringe at the end of dose administration from such syringe. The preferred device is a pawl mounted on the end of a flexible arm of a nut which cooperates with slots on the inside of a syringe barrel. The nut also has an incline surface at the end which mates with an incline surface in the barrel end. The mating of these surfaces at the end of dose admin...

A gage set is provided for loading various types of conventional hypodermic syringes. The gages comprise, in a first embodiment, a member having opposed parallel faces displaced from one another by a perpendicular edge having a notch formed therein which is sized to receive the plunger shaft of the syringe. This member may be formed as a single unit or of a number of smaller units which are fastened together to create the desired displacement. To load a syringe using the first embodiment the plu...

A cutting punch for destroying effectively the components of hypodermic syringes, after their use, in order to prevent the salvaging thereof from waste receptacles for eventual use as essential paraphernalia in the illicit drug field. An annularly shaped female cutter member is fitted with diametrally opposed slots for supporting the cannular needle and the syringe elements extending therefrom in horizontal position, and a cylindrical cutting punch is brought downwardly into engagement with the ...

A method of prefilling and terminally sterilizing a syringe including providing a syringe barrel having first and second opposite ends where the first end includes a port therethrough with a connector member formed about an exterior of the port and the second end being open. Particulate matter is removed from the interior of the syringe barrel and a cap and stopper are sterilized, the stopper including first and second opposite longitudinal ends. The first end of the stopper is inserted into the...