FIELD: medicine. SUBSTANCE: respiratory trainer has external chamber with hole for air passage to respiratory tube installed in external chamber coaxially. Upper narrowed end of chamber is coupled to respiratory tube. Open radial channels are made on the inside of external chamber bottom. Lower end of tube along with open radial channels form holes for air passage to tube. EFFECT: provision for physiologically effective resistance at inhalation and exhalation. 9 cl, 1 dwg
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Authors
Dates
1999-05-10—Published
1998-09-11—Filed