Heat and moisture filter exchanger and method

Details Heat and moisture filter exchanger and method Heat and moisture filter exchanger and method

2011-04-12

2011-04-12

Bianco, Patricia M (Department: 3772)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S201130, C128S204170, C128S909000, C128S911000, C128S912000, C128S203260, C128S203220, C165S119000

Reexamination Certificate

active

07921846

ABSTRACT:
A heat and moisture exchanger for both conducting a stream of air produced by a ventilator to a moisturizing medium and internally bypassing the moisturizing medium if aerosolized medication is introduced into the stream includes a housing having a ventilator-side port coupled to an outlet of a ventilator and a source of aerosolized medication. The housing has a patient-side port for coupling to a patient to provide ventilation including either air or air carrying aerosolized medication. A first path conducts air from the ventilator-side port through the moisturizing medium and the patient-side port, and a second path conducts air carrying aerosolized medication from the ventilator-side port directly to the patient-side port. A two-way valve mechanism in the housing selectively couples the ventilator-side port into fluid communication with one or the other of the first and second paths.

REFERENCES:
patent: 5035236 (1991-07-01), Kanegaonkar
patent: 6550476 (2003-04-01), Ryder
patent: 6588421 (2003-07-01), Diehl et al.

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