Wearable electrical impedance tomography gastric motility information extracting device and method

Abstract

The invention discloses a wearable electrical impedance tomography gastric motility information extracting device. The wearable electrical impedance tomography gastric motility information extracting device comprises an electrode array belt, a switch array, an impedance signal measurement module, a DSP and a wireless data transmission module. The electrode array belt is composed of a pasting strip and electrode buckles distributed on the belt at equal intervals and is connected with the switch array through a wire. The switch array is composed of an excitation gating switch and a measurement gating switch. An excitation current source is composed of a DDS multi-frequency signal generation unit and a voltage and current conversion module, and excitation current is injected in a corresponding electrode pair of the electrode array belt through the excitation gating switch. The impedance signal measurement module is composed of an instrumentation amplifier, a programmable amplifier, a demodulator and an AD conversion module. The measurement gating switch picks up impedance signals of the corresponding electrode pair on the electrode array belt and converts the impedance signals into digital information, and the DSP uploads the generated digital information to a portable intelligent device through the wireless data transmission module for processing.

Description

technical field [0001] The invention belongs to the field of biomedical signal detection, in particular to gastric dynamic signal detection through a wearable bioelectrical impedance imaging system during gastric digestion. Background technique [0002] Gastrointestinal motility disorder is a common clinical disease that seriously affects people's work, study and quality of life. Studies have shown that 50% of patients with gastrointestinal diseases have abnormal gastric motility. Gastric diseases always start from gastric motility disorders and develop in the direction of malignancy, and are always accompanied by abnormal gastric motility. Abnormal gastric motility is one of the sources of gastrointestinal diseases. one. The detection of gastric motility includes the measurement of gastric contraction, peristalsis and gastric emptying time. In some existing detection methods at home and abroad, pressure waves caused by gastric peristalsis can be observed by intracavitary ...

AI Technical Summary

Problems solved by technology

[0006] Wearable medical devices are currently mainly used in the measurement of vital signs, such as: wrist electronic blood pressure monitors, heart monitors, blood glucose meters, pulse monitors, earphones, armbands or wristbands Wearable sports and fitness products ; So far, there is no extraction device that uses wearable medical equipment to provide long-term continuous gastric dynamic signal for bioelectrical impedance imaging in the process of human gastric digestion

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