IOS impulse spirometry



IOS impulse spirometry


Spirometric and airway resistance diagnostics combined in one compact device.


Tidal breathing analysis with Impulse Oscillometry (IOS) has demonstrated to be informative and differentiated in the early detection and follow up of pulmonary diseases like asthma, COPD and idiopathic pulmonary fibrosis. Therefore IOS oscillometric airway measurements complement spirometry.








ویژگی ها



  •     Almost independent of patient cooperation, IOS can test a larger patient range than spirometry alone, from children, adult and geriatric patients.
  •     Assessment and differentiation of airway function under quiet breathing conditions.
  •     Sensitive and early detection of pulmonary obstruction. Asthma patients may be asymptomatic with normal spirometry and still show levels of increased airway resistance. IOS measures impedance at different frequencies indicative of central and peripheral airway resistance.
  •     Allows differentiation of central (proximal) airways resistance and peripheral (distal) airways resistance.
  •     Bronchodilator therapy often does not reach the peripheral airways. IOS can provide objective response to drug therapy even when FEV1 can't.
  •     Monitor the effect of bronchial provocation on airway tone.
  •     Determination of expiratory flow limitation (EFL). Abstract: Forced oscillation using impulse oscillometry provides objective responses to corticosteroids in asthmatic patients when FEV1 fails to improve. Conclusions: As forced oscillation technique is automatic and can measure multiple breaths over long periods, it is suitable for monitoring expiratory flow limitation continuously and identifying patients’ breathing close to the onset of expiratory flow limitation, where intermittent sampling may be unrepresentative. Dellacá RL, Duffy N, Pompilio PP, Aliverti A, Koulouris NG, Pedotti A, Calverley PM. E Resp J. 2007 Feb;29(2):363-74. Dipartimento di Bioingegneria, Politecnico di Milano University, Milan, Italy.
  •     Automated classification and interpretation of test results.
  •     IOS is available as a stand-alone device combined with spirometry measurement program (MasterScreen IOS and Vyntus IOS) or as an add-on module to the MasterScreen and Vmax Series.

Flow/Volume gas measurements




Type:  Pneumotach

Range:  0–20 L/s

Accuracy:  0.2–12 L/s, ±2%

Resistance:  < 0.5 cmH2O/L/s (0.05 kPa/L/s) at 10 L/s


Type:  Digital integration

Range:  ±20 L

Accuracy:  ±3%, ±50 mL (whichever is greater)




Quality system registration:  ISO 9001/ISO 13485

FDA:  510(k) market clearance

MDD 93/42/EEC:  CE marked

Electrical safety:  EN 60601-1

EMC:  EN 60601-1-2




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   آدرس : تهران- خیابان کریم خان زند- خیابان قائم مقام فراهانی

   نرسیده به میدان شعاع - پلاک 72 طبقه 3 واحد 5

    تلفکس : 88835233-021



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