Device for the evaluation of decongestant drugs
Abstract
Abstract DEVICE FOR MEASURING PHARYNGEAL PRESSURE AND NASAL AIRFLOW IN ORDER TO EVALUATE THE EFFECTIVENESS OF DECONGESTANT DRUGS IN WHICH A CONVENTIONAL CIRCULAR ORIFICE IS INSERTED INTO A FACE MASK. AS A PATIENT BREATHES THROUGH THIS ORIFICE, WITH ACCOMPANYING PHARYNGEAL TUBE PASSING BETWEEN HIS LIPS, THE PRESSURE-FLOW RELATIONSHIPS BETWEEN THE NOSE AND MASK ORIFICE ARE CONTINUOUSLY COMPARED BY A SPECIFICALLY DESIGNED ANALOG COMPUTER. FOR SIMPLICITY OF CLINICAL WORK, THE RECORDED COMPARISON SIGNAL CAN REPRESENT A PERCENTAGE OF, OR AN AREA RELATIVE TO, THAT OF THE STANDARD MASK ORIFICE. FOR PRECISE CALCULATIONS, THE ANSWER MAY BE CONVERTED TO ABSOLUTE UNITS OF FLOW (LITERS/SEC.) AND PRESSURE (CM. H2O) AFTER ABSOLUTE CALIBRATION OF THE PARTICULAR FACE MASK ORIFICE EMPLOYED.
Inventors
- 👤 F Prediger
- 👤 M Kniazuk
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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