Surgery – Liquid medicament atomizer or sprayer
Patent
1979-09-14
1981-07-21
Recla, Henry J.
Surgery
Liquid medicament atomizer or sprayer
12820022, 12820515, A61M 1600
Patent
active
042792509
ABSTRACT:
An all-pneumatic medical ventilator of the volume-limited type is provided with a pneumatically driven drug nebulizer for injecting medication into the patient's breathing circuit in response to a cyclic pressure signal from the ventilator. The nebulizer is driven either directly or indirectly, according to the desired mode of use, from the pressurized oxygen source of the ventilator. In a preferred mode, a given portion of the tidal volume of gas is temporarily withdrawn from the breathing circuit during inhalation and subsequently forcibly returned by way of the nebulizer to the breathing circuit. This takes place during the same inhalation period so that nebulized medication is added to the patient's breathing circuit without changing either the predetermined oxygen concentration or tidal volume of the breathing gas.
REFERENCES:
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patent: 3530856 (1970-09-01), Bird et al.
patent: 3537449 (1970-11-01), Foxwell et al.
patent: 3664337 (1972-05-01), Lindsey et al.
patent: 3863630 (1975-02-01), Cavallo
patent: 3915164 (1975-10-01), Bird
patent: 4041943 (1977-08-01), Miller
Heruth Kenneth T.
Valenta James D.
Airco, Inc.
Cassett Larry R.
Rathbun Roger M.
Recla Henry J.
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