Signal simulation method for electrical impedance gastric motility detection

A technology of signal simulation and gastric dynamics, applied in the field of biomedical signal detection, can solve the problems of complex and difficult linear resistance-capacitance network simulation

Active Publication Date: 2011-04-13
天津惊帆科技有限公司
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very difficult to simulate this change with a linear resistor-capacitor network
[0009] Second, bioelectrical impedance gastric dynamics detection is different from static detections such as electrical impedance tomography and electrical impedance body compositi...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Signal simulation method for electrical impedance gastric motility detection
  • Signal simulation method for electrical impedance gastric motility detection
  • Signal simulation method for electrical impedance gastric motility detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] as attached Figure 5 As shown, the hardware system of the present invention includes: excitation electrode (1), constant current source (2), detection electrode (3), water tank (12), liquid medium (4), elastic solid medium (5), slider ( 11), motor (13), leading screw (14), shift fork (8), detection system (16), computer (15), mechanical electric control unit (17).

[0055] exist Figure 5 In the shown embodiment, when the system performs gastric movement simulation experiments, first configure the conductivity of the liquid medium (4) and the elastic solid medium (5) according to the experimental needs, inject the liquid medium (4) into the water tank (12), and place the The elastic solid medium (5) is placed in the liquid. Set the parameters of the mechanical electric control unit according to the required movement form, press the shift fork (8) on the elastic solid medium (5), and adjust the pressure. The electrical impedance gastric movement detection system (16)...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for simulating and detecting an impedance gastric motility signal. Stomach and tissues surrounding the stomach are simulated by using an elastic solid medium and a liquid medium with different conductivity; the elastic solid medium is pressed by a shifting fork for deformation; and a motor drives the shifting fork to move along the elastic solid medium according to a preset mode under the control of a mechanical electric control unit to generate deformation propagation so as to simulate a gastric peristalsis process. When current is injected from an exciting electrode, the boundary of the liquid medium and the solid medium deforms to change field conductivity distribution; the voltage variation of the boundary is measured from a detection electrode, is amplified, demodulated and transformed and is input into a computer to calculate and analyze an impedance signal; and the impedance change caused by conductivity change is calculated by a sensitivity coefficient method.

Description

technical field [0001] The invention relates to the field of biomedical signal detection, and is mainly used for the simulation of gastric movement and electrical impedance signal changes in the research of bioelectrical impedance gastric motility detection. Background technique [0002] Medical electrical impedance technology is a detection technology that utilizes the electrical characteristics and changing laws of biological tissues and organs to extract biomedical information related to human physiological and pathological conditions. It usually injects a small AC measurement current or voltage into the test object by means of an electrode system placed on the body surface, detects the corresponding electrical impedance and its changes, and then obtains relevant physiological and pathological information according to different application purposes. [0003] The motility of the stomach is a complex process of electrical activity-mechanical contraction and conduction, whic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B5/053A61B5/11
Inventor 赵舒沙洪王妍邓娟王磊任超世
Owner 天津惊帆科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap