Intravenous solution set having an air access site and constrict

Details Intravenous solution set having an air access site and constrict Intravenous solution set having an air access site and constrict

1977-04-28

1978-08-08

Pellegrino, Stephen C.

Surgery

Respiratory method or device

Ozone or ion generation

128221, A61M 500

Patent

active

041050290

ABSTRACT:
A parenteral liquid infusion set comprising flow tubing as an intermediate site for the potential access of air suitable for connection with another set or the like, and a drip chamber upstream thereof having a constricted drop-forming member. To avoid the possibility of suction of air through the air access site, a tubing section of constricted bore is provided downstream from the potential air access site and so proportioned as to cause the pressure drop of the portion of the set upstream from the potential air access site to be always less than the pressure drop of the portion of the set downstream from the potential air access site under conditions of normal use and specifically under a precise set of test conditions.

REFERENCES:
patent: 3675891 (1972-07-01), Reynolds
patent: 3677242 (1972-07-01), Shaye
patent: 3803914 (1974-04-01), Noiles
patent: 3878869 (1975-04-01), Yamanouchi et al.
patent: 3886937 (1975-06-01), Bobo

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