Patient valve incorporating one-way check valves for infection c

Details Patient valve incorporating one-way check valves for infection c Patient valve incorporating one-way check valves for infection c

1992-09-21

1994-04-26

Kamm, William E.

Surgery

Truss

Pad

128725, 128730, A61B 508

Patent

active

053057627

ABSTRACT:
A single-use, disposable, elastomeric patient valve has a pair of one-way check valves disposed in the cross-piece portion thereof to create a barrier against patient infection. The check valves prevent contamination by a first patient of the reusable demand valve portion as he or she exhales into the patient valve and prevents the inhalation of possibly infected materials into the lungs, via the sampling chamber and associated tubing coupling same to the patient valve.

REFERENCES:
patent: 3721238 (1973-03-01), Wise et al.
patent: 4416273 (1983-11-01), Grimes
patent: 4456016 (1984-06-01), Nowacki et al.
patent: 4510933 (1985-04-01), Wendt et al.
patent: 4579826 (1986-04-01), Bolton et al.
patent: 5119825 (1992-06-01), Huhn

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