초록 ▼

A fluid injector for use with a needle-less syringe or needle-less add-on IV line is disclosed. The injector is connected to a main IV line and has a fluid passageway from the syringe or the add-on IV set to the main IV line. The injector comprises an anti-backflow valve member where the member is m

A fluid injector for use with a needle-less syringe or needle-less add-on IV line is disclosed. The injector is connected to a main IV line and has a fluid passageway from the syringe or the add-on IV set to the main IV line. The injector comprises an anti-backflow valve member where the member is movable under fluid pressure alone between a first position where the fluid can flow through the injector and a second position where the fluid cannot flow through the injector. The injector also comprises a valve located near the syringe end of the injector for receiving the fluid from the syringe or the add-on IV line for injection into the main IV line and for preventing air embolus entering into the IV line. The injector permits leaving a single or a group of drug filled syringes on line at all times with a continuously, rapidly flowing IV line and provides instantaneous “on demand”delivery of drugs or fluids from the syringe. The injector also prevents backflow of IV fluid into the syringe and automatically prevents air embolus from entering into the IV line whenever a syringe is removed from it for refilling it or replacing it with one containing another medication. The injector also permits addition of fluids to a continually flowing main IV stream manually, by pushing the plunger of the syringe by hand, mechanically, by using a programmed electronic infusion pump, or simply, by gravity drip from an add-on “piggy-back”IV set.

대표청구항 ▼

A parenteral fluid and medication injector for use with a fluid transport means having one end for connection to a patient and a fluid input port for receiving a fluid or medication, wherein the improvement comprising: a fluid conduit having a fluid path connecting two ends; a first end for receivin

A parenteral fluid and medication injector for use with a fluid transport means having one end for connection to a patient and a fluid input port for receiving a fluid or medication, wherein the improvement comprising: a fluid conduit having a fluid path connecting two ends; a first end for receiving said fluid or medication, and a second end along said fluid path downstream from said first end having means for connecting to said fluid input port of said fluid transport means for dispensing said fluid or medication into said fluid transport means; a first valve means, located at said second end of said fluid conduit, for preventing backflow of said fluid or medication from the second end of said fluid conduit to the first end to dilute the fluid or medication at said first end; and a second valve means, located along said fluid path upstream from said first valve means at said first end of said fluid conduit, for preventing air embolus in said fluid conduit, and for receiving said fluid or medication for injection into said fluid transport means.