| 摘要 |
<p>An electronic device for monitoring the passage of air through a positive expiratory pressure (PEP) device 100 comprises a sensor, such as a pressure transducer (206, figure 2), positioned within a housing 109 and configured to identify a change in pressure corresponding to the start or end of a breath exhaled into the device. A data recorder automatically logs pressure and time and may increase the sampling rate when a breath is detected. The duration of each breath is measured and recorded. The monitoring device may be incorporated into a detachable mouthpiece 101. The mouthpiece (figure 2) is divided into a first airway portion (201) and a second measurement portion (211) by a wall. An opening in the wall is sealed by a flexible diaphragm (204) and covered by a cap to form a chamber (203). A conduit (208) connects the chamber to the pressure transducer (206) which is mounted on a microcontroller (207) itself mounted on a PCB (212).</p> |
