Flexible valve for administering constant flow rates of medicine

Details Flexible valve for administering constant flow rates of medicine Flexible valve for administering constant flow rates of medicine

1993-08-23

1997-08-12

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

12820325, 12820414, 12820524, 138 45, 239338, 239370, A61M 1500, A61M 1610, F16K 1100, G05D 1102

Patent

active

056555202

ABSTRACT:
A nebulizer is improved by placing a flexible valve in the ambient air inlet tube. Inhalation suction and Venturi effect shut down the flexible valve in proportion to the strength of the inhalation. Thus, the same output flow rate is obtained even with variable strength inhalations. Medications can be properly administered by controlled inhalation flow rates. In an alternate embodiment a metered dose inhaler (MDI) is outfitted with a similar flexible valve. Once again the patient is forced to inhale at a constant flow rate, thus causing the medication to seep deeply into the lungs. In both embodiments the flexible valve is preferably shaped in a duck billed fashion with air flow flowing toward the narrow end of the duck bill.

REFERENCES:
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Vernay Duckbill Check Valves Sales Literature (3 pages) P.O. Box 310, Yellow Springs, OH 45387 VDB-1192.

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