Device and procedure for collecting a succession of intravenous

Details Device and procedure for collecting a succession of intravenous Device and procedure for collecting a succession of intravenous

1977-07-22

1979-09-04

Cohen, Lee S.

Surgery

Truss

Pad

A61B 514

Patent

active

041664507

ABSTRACT:
A blood sample collection device and procedure which employs a series of pre-evacuated rubber-capped vials for the drawing of successive samples. A hollow cylindrical carrier is used consisting of two cups which are integral base-to-base defining a main chamber and a mid-chamber. A soft rubber disc encloses the mid-chamber and defines an antechamber communicating with an intravenous needle. A piston carrying a double-ended auxiliary needle is slideable endwise in the mid-chamber. The antechamber is enclosed by transparent material such as plastic and is of such size as to admit only a trace of blood through the intravenous needle under venous pressure before the vial is connected, the blood in the antechamber serving as a visual telltale informing the user that the needle is in the lumen of the vein. The main chamber is laterally offset from the mid-chamber and antechamber, enabling the intravenous needle to be inserted at a shallow penetration angle notwithstanding the relatively large diameter of the main chamber and further insuring that the vial cap is penetrated in a random eccentric position. The vial is distinguished by use of an extensive rubber diaphragm held in place by screw-on cap which provides a reliable seal while permitting subsequent opening with only light manual twisting force.

REFERENCES:
patent: 2742041 (1956-04-01), Lipari
patent: 3159159 (1964-12-01), Cohen
patent: 3433216 (1969-03-01), Mattson
patent: 3494352 (1970-02-01), Russo et al.
patent: 3659587 (1972-05-01), Baldwin
patent: 3817240 (1974-06-01), Ayres
patent: 3965889 (1976-06-01), Sachs
patent: 4106497 (1978-08-01), Percarpio

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