US 5,309,924 A · Spill-proof blood collection device

Abstract

A blood collection device is disclosed which includes a blood collection tube assembly and a collection container assembly. The collection tube assembly comprises a link of flexible tubing having a venipuncture needle carried on a first end and an outlet carried on a second end. A flow control valve is carried near the outlet end and blocks a central passage of the collection tube in a closed position. The collection container assembly includes an expandable plastic tube which may be expanded by an exterior spring to cause a slight vacuum in the container and assist the blood withdrawal tube. A transfer tube communicates with the interior of the collection container and includes a blunt needle on an inlet end. The blunt needle engages the flow control valve to open the valve and open and allow blood to flow outwardly after the venipuncture needle has been inserted into a vein. The collection tube may be left in the vein while the collection chamber is removed and replaced without the fear of blood spillage since the flow control valve will return to the closed position once the blunt needle is withdrawn.

Claims14

Dependent claims

A blood collection device for collecting blood without spillage comprising:

a blood collection tube having a venipuncture needle carried on one end;
an open end formed on an opposing end of said collection tube in fluid communication with said needle;
a removable specimen collection container including means for attachment in fluid communication to said blood collection tube and for removal from said collection tube after collection of a prescribed blood amount;
a transfer tube carried by said specimen container in fluid communication with an interior of said container;
positive blood flow control means carried within said blood collection tube which prevents the outward flow of blood from said collection tube from said person's vein;
and
a hollow needle carried by a free end of said transfer tube which engages said flow control means when said needle is inserted into said collection tube to facilitate said attachment of said collection container and open said flow control means and allow the flow of blood outwardly through said collection tube when said needle is inserted in said collection tube so that a plurality of said collection containers may be attached to and removed from said blood collection tube without blood spillage.

4 more elements

Dependencies are inferred from the claim text.

Spill-proof blood collection device

Life of this patent

Spill-proof blood collection device

Life of this patent

Abstract

Claims14