Safety valves for protection against liquid contamination

Details Safety valves for protection against liquid contamination Safety valves for protection against liquid contamination

1974-07-08

1976-09-28

Michell, Robert W.

Surgery

Respiratory method or device

Ozone or ion generation

137197, 734254P, A61M 100

Patent

active

039825388

ABSTRACT:
A safety valve which may be used in a pipette or in medical or biological equipment such as collection bottles, employs a carrier which is inserted in a flow line and contains a material which swells in the presence of an unwanted fluid to block the line and provide protection against contamination.

REFERENCES:
patent: 2348831 (1944-05-01), Mathis
patent: 2850033 (1958-09-01), Hartle
patent: 3285296 (1966-11-01), Ishimaro et al.
patent: 3719197 (1973-03-01), Pannier, Jr. et al.

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