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S2 Bioengenharia e Qualidade de Vida |
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Title:
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DYNAMIC EVALUATION OF A NEW DEVICE FOR RESPIRATORY PYSIOTHERAPY
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Summary :
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ABSTRACT. THE NEW DEVICE FOR RESPIRATORY PHYSIOTHERAPY KNOWN AS FLUTTER RESEMBLES A WHISTLE UNDER THE FORM OF A SMOKE-PIPE WITH A 28-G STAINLESS STEEL SPHERE INSIDE ITS CONICAL CAVITY. DUE TO THE AIR PRESSURE DURING THE EXPIRATION THE SPHERE WILL VIBRATE INTERMITTENTLY. THIS PROCESS STIMULATES "BRONCHIAL PERCUSSION" WHICH EASES SPUTUM ELIMINATION. THE OBJECTIVES OF THE PRESENT ARTICLE ARE TO MECHANICALLY CHARACTERIZE THE DYNAMIC BEHAVIOR OF SUCH DEVICE, TO MONITOR AND TO ANALYZE THE VIBRATORY MOTION OF THE SPHERE, THE DYNAMIC PRESSURE AT THE FLUTTER INLET, UNDER DIFFERENT AIRFLOW RATES. NUMERICAL SIMULATIONS OF THE FLUID VELOCITY AND PRESSURE FIELDS AND FLOATING HEIGHTS WERE ALSO MADE, USING A FINITE ELEMENT COMPUTATIONAL MODEL RESULTS SHOW INTERESTING ASPECTS TO PROFESSIONALS IN THE FIELD AND TO THE OPTIMIZATION OF THE FLUTTERS MECHANICAL DESIGN.
KEY WORDS: FLUTTER, FLOATING SPHERE, CHARACTERISTIC FREQUENCIES. |
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Author :
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Gastaldi, A. 0
Lepore Neto, F. P.
Lima, Lutero Carmo de
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Paper View :
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COBEM99
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