Medical administering needle assembly with filter means

Details Medical administering needle assembly with filter means Medical administering needle assembly with filter means

1976-06-10

1977-12-06

Yasko, John D.

Surgery

Respiratory method or device

Ozone or ion generation

128221, A61M 532

Patent

active

040611434

ABSTRACT:
A medical administering needle assembly comprising a generally tubular body portion having an annular end wall formed with projections slightly protruding into the fluid conducting passageway in the body portion and two filter elements having different densities and spaced apart from the annular end wall by means of the projections.

REFERENCES:
patent: 2833281 (1958-05-01), Krug
patent: 2857913 (1958-10-01), Miskel
patent: 3468308 (1969-09-01), Bierman
patent: 3757780 (1973-09-01), Ishikawa
patent: 3859999 (1975-01-01), Ishikawa

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