A wireless bowel sound analyzer

A wireless bowel and analyzer technology, applied in the field of biomedical signal acquisition and processing, can solve problems such as low bowel motility and inapplicability, and achieve the effects of powerful functions, wide applications, and good medical assistance.

Active Publication Date: 2021-12-14
SICHUAN NEOSOURCE BIOTEKTRONICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, for patients such as postoperative ileus, intestinal motility is low, and there will be no obvious bowel sounds for several hours after surgery, and the first postoperative bowel sounds are one of the indicators for judging the recovery of patients, which is obviously recommended for doctors to use The general method of auscultation with a stethoscope for a long time is not applicable

Method used

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  • A wireless bowel sound analyzer
  • A wireless bowel sound analyzer
  • A wireless bowel sound analyzer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, a wireless bowel sound analyzer includes a wireless auscultation head and a signal processing terminal, the wireless auscultation head is used to collect the sound signal of the affected part, and after being converted into an electrical signal, it is wirelessly transmitted to the signal processing terminal, and the wireless auscultation head It includes a sound sensor, a filter amplifier module, a microprocessor, a wireless transmission module and a power management module, wherein the sound sensor is used to convert the collected sound signal into an analog electrical signal, and the filter amplifier module is used to filter the analog electrical signal, Amplification processing, the microprocessor receives the filtered and amplified electrical signal for analog / digital conversion and protocol processing, and performs wireless signal transmission through the wireless transmission module. The working process is controlled, and the power manag...

Embodiment 2

[0027] The wireless stethoscope head is provided with a sticking device, which is used to stick the wireless stethoscope head on the affected area to continuously collect sound signals. The power management module includes a charging circuit, a rechargeable battery and a power supply circuit. The charging circuit can be connected to an external power source to charge the rechargeable battery. The power supply circuit is equipped with a LM4132AMF power chip and a TPS727 power chip, which are used to convert the output voltage of the rechargeable battery into different Voltage is used for power supply, the filter amplifier module is equipped with OPA333AIDCK op amp chip for signal amplification, the wireless transmission module is equipped with nRF24L01 radio frequency transceiver chip and MIFA antenna for wireless signal transmission, and the rechargeable battery is fully charged for continuous operation of the wireless stethoscope head At least 24 hours.

Embodiment 3

[0029] Bowel sounds auscultatory monitoring system can be used as figure 2 The steps shown to realize the intelligent identification of bowel sounds, wherein:

[0030] The preprocessing process of the preprocessing unit on the received signal includes protocol conversion, DC removal and filtering, and the filtering range is controlled within the frequency range of 30Hz-2500Hz.

[0031]The process of extracting the characteristic signal by the characteristic signal extraction unit includes: first, based on the 1s signal segment, down-sampling, sampling once every 10 points, and then adopting the Hilbert transform to calculate the envelope P of the sampled signal, and obtain the envelope P Finally, smoothing is performed, and then the differential envelope P1 of the envelope P is obtained by difference, and then based on the adaptive threshold of the envelope P and the adaptive threshold of the differential envelope P1, the Hilbert envelope threshold and the differential envelo...

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PUM

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Abstract

The invention discloses a wireless bowel sound analyzer, comprising a wireless auscultation head and a signal processing terminal. The wireless auscultation head is used to collect sound signals of the affected area, convert them into electrical signals and then wirelessly transmit them to the signal processing terminal. The wireless auscultation head includes Sound sensor, filter amplification module, microprocessor, wireless transmission module and power management module, the signal processing terminal includes a preprocessing unit, a feature signal extraction unit, a feature determination unit, a storage unit and a display unit, and the preprocessing unit is used for receiving wireless auscultation The wireless signal sent by the head is preprocessed, and the feature signal extraction unit is used to extract the feature signal. When applied, it can realize long-term unattended collection and wireless transmission of bowel sound signals, and perform intelligent and efficient identification and processing on the collected signals.

Description

technical field [0001] The invention relates to the technical field of biomedical signal acquisition and processing, in particular to a wireless bowel sound analyzer. Background technique [0002] Bowel sounds refer to intermittent gurgling sounds produced by the gas and liquid in the intestinal tube being pushed during peristalsis. In 1905, Cannon first systematically explained the sounds auscultated in the abdomen, linking abdominal sounds to the gastrointestinal system. With the progress of medical research, bowel sounds have become an important indicator for the diagnosis of abdominal diseases. At present, clinical abdominal auscultation is mostly performed with a stethoscope, and the auscultation time generally lasts from half a minute to several minutes. The pathological characteristics of bowel sounds are related to the type of disease. The bowel sounds of different patients suffering from the same disease are different, and the bowel sounds of the same patient have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B7/04G10L17/26G08C17/02G10L25/45
CPCA61B7/008A61B7/04G10L17/26G08C17/02G10L25/45A61B2560/0214
Inventor 余权朱宏魏开航刘影彭远波
Owner SICHUAN NEOSOURCE BIOTEKTRONICS LTD
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