Medical piercing cannula with drip chamber

Details Medical piercing cannula with drip chamber Medical piercing cannula with drip chamber

1990-01-02

1992-03-24

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604252, 604405, A61M 500, A61B 1900

Patent

active

050984071

ABSTRACT:
A medical piercing cannula assembly for use with a hard or soft medical container of a fluid such as a drug solution has a drip chamber a cannula having a spike at one end and engaging the drip chamber at the other end. The cannula has a fluid passage and an air passage defined therein. The fluid passage extends from said one end of the cannula and communicates with the drip chamber. The air passage extends from said one end of the cannula and communicates with atmosphere. A regulating mechanism is connected to the air passage, for regulating the rate of flow of air through the air passage.

REFERENCES:
patent: 3092106 (1963-06-01), Butler
patent: 3659629 (1972-05-01), Deaton
patent: 3993068 (1976-11-01), Forberg
patent: 4262671 (1981-04-01), Kersten
patent: 4396016 (1983-08-01), Becker
patent: 4846637 (1989-07-01), Alderson et al.
patent: 4888008 (1989-12-01), D'Alo et al.
patent: 4959053 (1990-09-01), Jang

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