A dental syringe (FIGS. 1-4) includes a head having air and water passages normally blocked by valves opening into a manifold leading to a syringe tip and opened by pushbutton actuators in bores having cupped diaphragms serving to seal the bores and also serving as springs to return pushbuttons to their normal positions and each serving to draw the fluid back into its own portion of the manifold. Another dental syringe (FIGS. 5 and 6) has a head with a slide valve selectively positionable to con...

The present invention provides a syringe device comprising: a first syringe comprising: a first syringe barrel including a first opening at a distal end thereof through which fluid may be forced or aspirated; and a first syringe plunger sliding within the first syringe barrel for forcing fluid through the first syringe barrel opening, the first syringe plunger including a stopper at a distal end thereof which sealingly and slidably engages the first syringe barrel; a reciprocating member which m...

The present invention provides a syringe device comprising: a first syringe comprising: a first syringe barrel including a first opening at a distal end thereof through which fluid may be forced or aspirated; and a first syringe plunger sliding within the first syringe barrel for forcing fluid through the first syringe barrel opening, the first syringe plunger including a stopper at a distal end thereof which sealingly and slidably engages the first syringe barrel; a reciprocating member which m...

This invention contemplates a liquid filled sealable flexible bag having a manipulative discharge tube or nozzle. As a vaginal douche the discharge tube is removably equipped with a vaginal fitting which telescopically engages the tube. Positive closing means of the discharge tube is provided. The filled and plugged bag, complete with vaginal fitting, may be encased in a sealed envelope which in turn is conveniently accommodated in a purse-like flexible case. To use the device after breaking the...

Syringes are disclosed herein incorporating a variety of safety mechanisms for protecting the users from accidental needle stick. In certain embodiments, the syringes incorporate retractable carriages that can be retracted into the syringe barrels by engaging with the plungers. The carriages are configured to receive different needle hubs having any number of needle sizes. In certain other embodiments, the carriages are spring loaded so that as the plungers disengage the carriages from the syrin...

Syringes are disclosed herein incorporating a variety of safety mechanisms for protecting the users from accidental needle stick. In certain embodiments, the syringes incorporate retractable carriages that can be retracted into the syringe barrels by engaging with the plungers. The carriages are configured to receive different needle hubs having any number of needle sizes. In certain other embodiments, the carriages are spring loaded so that as the plungers disengage the carriages from the syrin...

A reusable syringe has a push rod with a threaded entrance hole in its tip end. The threaded hole leads into an inner capture area. A shot package includes a glass tube with a plunger having a stud with an interrupted thread for passing through the thread entrance hole and becoming captured in the inner capture area. When the rod is pushed, the stud transfers forces to the plunger without applying compression forces thereto. This way, the plunger does not expand and chatter against the glass tub...

The present invention provides a syringe device comprising: a first syringe comprising: a first syringe barrel including a first opening at a distal end thereof through which fluid may be forced or aspirated; and a first syringe plunger sliding within the first syringe barrel for forcing fluid through the first syringe barrel opening, the first syringe plunger including a stopper at a distal end thereof which sealingly and slidably engages the first syringe barrel; a reciprocating member which m...

An accessory for temporary, contamination-free holding of closing stoppers used for syringes and other medical care devices, where the accessory comprises a stopper designed for coupling to a recess in another existing stopper or a carrier that can be combined with a stopper. The carrier has a lower part, which may be designed as a substitute for an existing stopper; a mid-piece, which is inserted in or over an existing stopper; a rider for placing over a curved surface such as a syringe body; o...

A disposable hypodermic syringe, which is provided with the needle fitted and sheathed, provides automatic retraction of the needle after use. The syringe may be supplied pre-charged with an injectant. The completion of the injection stroke attaches the piston to the needle carrier and subsequently dislodges a retaining ring thereby freeing the piston from the plunger and releasing stored energy of a spring or the like to draw the piston and needle carrier into the plunger. The plunger is positi...