Device for prolonged intravascular infusion
OwnerLuis A. Guerrainventor
Life of this patent
Estimating the term…
Abstract
An improved device for the introduction of fluids into blood vessels, and, particularly, into veins, includes a cannula-containing portion fitted with a valve which is normally closed. A connector portion can be connected to a source of fluid such as IV, special medication or alimentation. The connector portion is so shaped that it can be joined tightly to the cannula-containing portion, simultaneously and automatically opening the valve so that fluid can pass in sequence through the connector portion and through the cannula. A metal cannula can be used where fluid is to be supplied for moderate periods such as a few hours. Where fluid is to be supplied for longer periods, provision is made for introduction into the blood vessel of a cannula of a plastic which is low in thrombogenicity and tendency to cause phlebitis.
Claims12
An improvement in a device for introducing fluids into a blood vessel over extended periods of time, comprising a support portion removably and sealingly connectable with a source of intravenous fluid, of medication in solution or of alimentation in solution, said support portion comprising a body having a passage therethrough and an aperture connecting with said passage and forming a junction therewith, valve means at the proximal end of said passage and normally closing said aperture at said junction, and a cannula, the proximal end of said cannula being tightly sealed in the distal end of said passage, said valve means being operable by exertion of mechanical force through said aperture.
Dependencies are inferred from the claim text.