Expiration duration indication device for forced vital capacity meter

Abstract

The embodiment of the invention provides an expiration duration indication device for a forced vital capacity meter. The expiration duration indication device comprises a microprocessor, an airflow sensor and an indication module; the microprocessor specifically comprises a timing unit and a control unit; the airflow sensor is connected to the timing unit, and the timing unit is connected to the control unit; the control unit is connected to the indication module; the timing unit is used for recording the expiration duration after the airflow sensor detects the expiration airflow; and the control unit is used for controlling the indication module to indicate the expiration duration according to the expiration duration recorded by the timing unit. According to the expiration duration indication device, the airflow sensor is arranged to trigger the timing unit to record the expiration duration, the control unit controls the indication module to indicate the duration according to the expiration duration, so that a measurer can know the expiration duration in real time in the process of measuring the forced vital capacity, and therefore the success rate of the forced vital capacity detection can be improved, the measurement frequency and the physical burden of the measurer can be reduced, and discomfort or syncope of the measurer can be avoided.

Description

technical field [0001] Embodiments of the present invention relate to the field of medical equipment, and in particular, relate to an expiratory duration indicating device for a spirometer. Background technique [0002] The American Thoracic Society (ATS) stipulates that the exhalation time of patients over 10 years old (including 10 years old) should not be less than 6 seconds (patients younger than 10 years old should not be less than 3 seconds), so the expiratory time for forced vital capacity detection is a quality control item one. Among them, forced vital capacity (forced vital capacity, FVC), also known as time vital capacity, refers to the maximum amount of air that can be exhaled as soon as possible after inhaling as hard as possible. [0003] The results of quality control determine whether the results of forced spirometry test are of reference value. However, in the current spirometer, it is only after the measurement is finished that the measurer is notified wh...

AI Technical Summary

Problems solved by technology

However, in the current spirometer, it is only after the measurement is over that the measurer is notified whether the exhalation time has reached 6 seconds; if it does not reach 6 seconds, the measurement is invalid and needs to be remeasured

In this way, the measurement may be repeated many times; for the measurer, the continuous measurement should not be more than 8 times, otherwise the measurer will find it difficult to cooperate and affect the measurement result

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