Syringe filter and valve combination

Details Syringe filter and valve combination Syringe filter and valve combination

1974-01-03

1976-02-17

Yasko, John D.

Surgery

Respiratory method or device

Ozone or ion generation

128218NV, A61M 500

Patent

active

039385132

ABSTRACT:
An improved filter and valve assembly used in combination with a medical syringe for blocking, and thereby protecting a patient against, the infusion of particulate matter. The filter element is fixed within the bore of the syringe and a tubular valve body is secured within a central opening in the filter element. A flexible closure formed integrally with the tubular valve body opens and closes the valve passage, which serves as a filter by-pass, when the plunger of the syringe is raised (withdrawn) and lowered (depressed).

REFERENCES:
patent: 1363128 (1920-12-01), Kitaoka
patent: 2893390 (1959-07-01), Lockhart
patent: 3075525 (1963-01-01), McConnaughey
patent: 3089490 (1963-05-01), Goldberg
patent: 3370754 (1968-02-01), Cook et al.
patent: 3373743 (1968-03-01), Saffir
patent: 3477432 (1969-11-01), Shaw
patent: 3736932 (1973-06-01), Satchell
patent: 3747812 (1973-07-01), Karman et al.

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