Portable electronic spirometer

Details Portable electronic spirometer Portable electronic spirometer

2006-06-20

2006-06-20

Nasser, Robert L (Department: 3736)

Surgery

Diagnostic testing

Respiratory

C600S538000

Reexamination Certificate

active

07063669

ABSTRACT:
A spirometer having a housing with an elongated flow chamber open at one end, a pressure sensing end opposite the open end and an outlet passageway intercepting the flow chamber at an angle α and proximate the pressure sensing end. A differential pressure sensor is coupled to the pressure sensing end from a port at an angle β to an axis of the flow chamber. The angle α is substantially greater than 0° but substantially less than 180° while the angle β may range from 90° to 180°, such that a significantly increased measured air pressure results over that measured when α=180° and β=90°.

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