Intravenous solution set having a constricted inner diameter por

Details Intravenous solution set having a constricted inner diameter por Intravenous solution set having a constricted inner diameter por

1975-08-07

1977-07-12

Pellegrino, Stephen C.

Surgery

Respiratory method or device

Ozone or ion generation

128221, A61M 500

Patent

active

040347540

ABSTRACT:
A parenteral liquid infusion set comprises flow tubing, and means for connection to blood vessel penetrating means and a parenteral liquid source at opposite ends thereof. A drip chamber is present in the set having a tubular drop-forming member of reduced inner diameter. An intermediately positioned site is present for providing access to the interior of the set from the exterior, the site being positioned downstream from the drip chamber. In accordance with this invention, a portion of the fluid flow tubing downstream from the connection site defines a bore of reduced diameter, when compared with the remainder of the flow tubing, to prevent the creation of a less than atmospheric pressure in the set and to prevent air from being sucked into the flow tubing through an administration set connected at the intermediately positioned site.

REFERENCES:
patent: 3675891 (1972-07-01), Reynolds et al.
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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