Vented fluid collection system

Details Vented fluid collection system Vented fluid collection system

1993-11-23

1996-10-08

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

A61M 3100

Patent

active

055626394

ABSTRACT:
A vented fluid collection system including a collection apparatus for use with a device in communication with a mammalian organ or body lumen having a fluid to be sampled therein. The fluid collection apparatus has a blunt cannula having a bore defined therein and a wall defining a small collection chamber in communication with the bore. A fluid sample passes through the bore and is stored in the collection chamber. A vented membrane is disposed at an opening in the wall to allow gas to pass therethrough but prevents fluid collected in the collection chamber from passing therethrough. A shroud surrounds and protects the cannula and a cannula cap may be mounted to the shroud to enclose the cannula. In an alternative design of the fluid collection apparatus, the bore acts as the collection chamber. In all designs, when the fluid collection system communicates with a blood vessel, the patient's systemic blood pressure urges the fluid sample into the bore and, in the first design, further into the collection chamber.

REFERENCES:
patent: 4496350 (1985-01-01), Consentino
patent: 4666438 (1987-05-01), Raulerson
patent: 4721506 (1988-06-01), Tenes
patent: 4763648 (1988-08-01), Wyatt
patent: 4834152 (1989-05-01), Howson et al.

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