Portable electronic spirometer

Details Portable electronic spirometer Portable electronic spirometer

A - Human Necessities

61

B

A61B 5/087 (2006.01) A61B 5/08 (2006.01) G01F 1/34 (2006.01)

Patent

CA 2386639

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 .alpha. and proximate the pressure sensing end. A differential pressure sensor is coupled to the pressure sensing end from a port at an angle .beta. to an axis of the flow chamber. The angle .alpha. is substantially greater than 0° but substantially less than 180° while the angle .beta. may range from 90° to 180°, such that a significantly increased measured air pressure results over that measured when .alpha. = 180° and .beta. = 90°.

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