Method for taking a blood sample

Details Method for taking a blood sample Method for taking a blood sample

Filed on

1981-11-02

Date issued

1983-02-08

Examiner

Yasko, John D.

Patent Class

Surgery

SubClass

Truss

SubSubClass

Pad

Other Related Categories

A61B 514

Type

Patent

Status

active

Patent number

043723250

Description

ABSTRACT:
An improved method for taking a sample of blood using a disposable syringe and hypodermic needle assembly comprising the steps of moving the plunger tip of the syringe axially forwardly to expel liquid anti-coagulant and air from the syringe barrel until initial contact of the tip with the barrel end is made, whereby a predetermined amount of the anti-coagulant remains in the barrel; followed by inserting the needle into a blood vessel of the patient and permitting the blood pressure in the blood vessel to move the plunger tip and plunger axially rearwardly in the barrel to take a sample of blood.

REFERENCES:
patent: 1165686 (1915-12-01), McElroy
patent: 1948982 (1934-02-01), Cutter
patent: 2419401 (1946-02-01), Hinds
patent: 3147753 (1964-09-01), Nogier et al.
patent: 3809056 (1975-06-01), Moorehead
patent: 3930492 (1976-01-01), Hatsuno
patent: 4041934 (1977-08-01), Genese

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