256 results about "Hypodermic injection" patented technology

A device for inhibiting unintentional contact with the tip of a needle that has a wire guide disposed in a lumen thereof. A housing of the device has an interior cavity. A portion of the needle extends through the cavity and a tip of the needle is located outside of the housing during use of the needle. A pivoting member is located within the cavity and defines a distal opening and a proximal opening which are sized to allow the needle to pass through the openings. When the needle tip is within the cavity and the needle is withdrawn from the distal opening of the pivoting member, a spring or a compressible member cants the pivoting member into locking engagement with the needle to prevent further movement of the needle. Alternatively, a spring is in locking engagement with the needle to prevent its further movement. When the pivoting member is canted about the needle, a slot of the pivoting member is generally aligned with the tip of the needle so that the wire guide can extend through the slot while further forward movement of the needle through the slot is prevented.

A catheter device is disclosed which the hypodermic needle used for insertion is retracted into a protective sheath and left in place during use. An IV fluid flow path is provided that is blocked by the hypodermic needle prior to retraction but is opened by the retraction of the needle from the catheter. The insertion hypodermic needle is not discarded separately but only after the use of the whole catheter device to inject fluids.

Vacuum break vial assembly and method for reducing the incidence of nosocomial infections, comprising a vial stopper having a 2-part withdrawn-fluid volume compensation assembly having a barbed vent element that secures an apertured needle sheath, a bladder-retainer tube and an expandable / unfoldable bladder. The vial has an aluminum cap holding a plastic flip-off top that removes a central portion of the cap to permit access by hypodermic needle through the stopper into the needle sheath. No pre-pressurization of the vial by ambient contaminated air via the hypodermic can occur. Rather, the needle is inserted in the vial through the stopper and the medicinal fluid withdrawn. Air is inlet into the separate bladder which expands to permit withdrawal of fluid into the hypodermic without vacuum lock. No air having pathogen vectors is introduced into the vial medicinal fluid as the bladder isolates volume-compensating air from the medicinal fluid. Plural embodiments are shown.

A hypodermic drug delivery apparatus for delivering a pressurized medication fluid generally incorporates a reservoir containing at least one deliverable fluid, a reservoir pressurizing device, a rupturing member, a fluid administration device for communicating with the reservoir via a fluid passageway, and a rupture control mechanism for preventing rupture of a wall portion of the reservoir below a threshold pressure.

A hypodermic injection system particularly for use in mass immunizations having a handpiece with a grasping mechanism for holding ampules filled with injectate, a plunger for driving into the ampule to discharge the injectate in an injection process, an injection spring mechanism for driving the plunger, a motor and / or manual mechanism for cocking the injection spring mechanism, and an ampule ejection mechanism for ejecting ampules after use under control of a release mechanism. Ampules can be loaded, used and ejected without contact by the user of the system or the patient being injected. Also disclosed are a filling station for filling ampules through their injection orifices, and an arming device for setting the injection spring. Ampules are disclosed having a piston which is drivable towards an orifice to discharge injectate through the orifice. Ampules are also disclosed having enlarged proximal portions for easy grasping by the grasping mechanism of the injector. Ampules are further disclosed with separators for mixing lyophilized medication and a diluent. Further disclosed are magazines for holding ampules for sequential use by the hypodermic injector. The disclosed system finds particular use as a mass immunization kit for making numerous injections in the field.