Method for improving tidal volume control and detection accuracy by introducing R value for calculation

Abstract

The invention discloses a method of precision controlling and detecting by improving tidal volume through introducing an R value. The method comprises steps of utilizing Pplat to calculate a system compliance C which is equal to the ratio of delta V and (Pplat - PEEP); utilizing a processing unit to calculate a real obtained tidal volume VT of the patient end and VT being equal to the result of delta V * (C-Ctube) / C; wherein, delta V represents the variation of tidal volume, PEEP represents end-expiratory esophageal pressure, Ctube represents the tube compliance. The processing unit figures out the tidal volume value VT' in the exhalation periodic time of the next time according to the real obtained tidal volume VT of this-time breathing cycle of the patient end, VT' is equal to the result of VT + delta VT*K, wherein, K represents the scaling factor of regulation controlling, VT is the real obtained tidal volume of this-time breathing cycle, VTset is a set tidal volume that can be reached as expected, delta VTis equal to the result of VTset-VT, and thus the processing unit control the opening degree of the next time air breathing periodic time, finally, the object of tidal volume controlling and precision detecting can be achieve.

Description

technical field [0001] The present invention provides a new method for improving the tidal volume control and detection accuracy. When calculating the tidal volume, the R value is introduced to improve the accuracy, which can be applied to detection and diagnosis equipment in medical diagnosis, especially anesthesia machines and ventilators Calculation and monitoring of tidal volume. Background technique [0002] At present, there are usually two methods for detecting tidal volume on anesthesia machines and ventilators: [0003] 1. The sensor is inserted into the mouth to detect data in real time. The advantage of this method is that the monitored data is accurate, does not need to be processed, and can reflect the patient's status in real time. The disadvantage is that the line from the machine to the patient's mouth is long, and the doctor may interfere during the operation. Moreover, a long line will also affect the accuracy of the signal. [0004] 2. The sensor is em...

AI Technical Summary

Problems solved by technology

[0011] The present invention is aimed at above-mentioned patient's tidal volume V T For the problem of inaccurate calculation, a new tidal volume calculation method is proposed, which can be applied to medical equipment that affects the patient's respiratory system, including anesthesia machines and ventilators, to improve the control and monitoring accuracy of tidal volume, thereby ensuring ventilation Accuracy and safety of equipment in the process

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