Real-time monitoring device and method for bladder urine volume based on electrical impedance tomography imaging technology

A technology for electrical impedance tomography and real-time monitoring, applied in the field of medical testing, can solve the problems of small amount of measurement information, changes in contact impedance and the influence of patient posture, and achieve the effect of improving accuracy and improving market application prospects.

Active Publication Date: 2015-05-13
SUN YAT SEN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, this method has a small amount of measurement information and is easily affected by changes in the contact impedance of the body surface and the patient's posture, which has great limitations.

Method used

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  • Real-time monitoring device and method for bladder urine volume based on electrical impedance tomography imaging technology
  • Real-time monitoring device and method for bladder urine volume based on electrical impedance tomography imaging technology
  • Real-time monitoring device and method for bladder urine volume based on electrical impedance tomography imaging technology

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Effect test

Embodiment 1

[0054] Embodiment 1: as figure 1 As shown, a device for real-time monitoring of bladder urine volume based on electrical impedance tomography technology, including an excitation module, an electrode driving module, a signal measurement and conditioning module, a data acquisition module, a computer control terminal and an electrode shedding detection module, wherein,

[0055] 1. The excitation module is mainly used to generate a constant current sine wave output signal with adjustable frequency and amplitude under the control of the computer control terminal.

[0056] Specifically, the module includes a Direct Digital Synthesis (DDS) chip and a voltage / current conversion circuit. The frequency of the DDS chip is programmed and controlled by the computer control terminal. Generally, the output is a constant voltage sinusoidal signal of 50KHz and an amplitude of 600mV, and a constant current sinusoidal signal of 50KHz and an amplitude of 1mA is output after the voltage / current co...

Embodiment 2

[0072] Embodiment 2: as image 3 As shown, a method for real-time monitoring of urinary bladder volume using electrical impedance tomography, comprising the following steps:

[0073] S1, 16 electrodes are uniformly arranged on an elastic circular belt, and the electrodes are ordinary Ag / AgCl ECG electrodes;

[0074] S2, tie the ring-shaped belt on the abdominal surface where the bladder of the subject is located, and correspond to the surrounding plane 10 cm above the anterior superior iliac spine of the human body;

[0075] Before sticking the ring electrode, it is necessary to remove the hair of the patient's surface skin and polish the skin with sandpaper to achieve the best measurement effect. The ring belt needs to be fixed when measuring, otherwise it will affect the measurement result;

[0076] S3, open the device described in embodiment 1, carry out measurement;

[0077] S4, if it is the first use, each user must go through a calibration experiment first.

[0078] ...

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Abstract

The invention provides a real-time monitoring device and method for bladder urine volume based on an electrical impedance tomography imaging technology. The device comprises a stimulus module, an electrode driving module, a signal measuring and conditioning module, a data collecting module, a computer control terminal and an electrode loss detection module. The method includes the steps that electrical impedance data information on the human body surface is collected through a test electrode array placed at the body surface of the bladder part of a patient; a two-dimensional color image of a cross section where the bladder is positioned is conducted real-time reconstruction according to the collected electrical impedance data information of the bladder, a parameter of the two-dimensional image is extracted through a follow-up image algorithm, the current bladder urine accumulation volume is predicted according to the parameter, and an alarm is raised when the bladder urine accumulation volume reaches a larger volume, so that the patient is reminded to urinate or paramedics help the patient to urinate. According to the real-time monitoring device and method for the bladder urine volume, the accurate predication of the urine volume in the bladder urine accumulation process is achieved, and the accuracy of the real-time monitoring of the bladder urine volume is improved.

Description

technical field [0001] The invention relates to the technical field of medical detection, and more particularly, to a device and method for real-time monitoring of bladder urine volume based on electrical impedance tomography technology. Background technique [0002] For patients with bladder dysfunction, such as urinary incontinence, spinal cord injury and other patients with loss of urination, it is necessary to monitor the bladder urine volume in real time, and remind the patient to urinate in time or the medical staff to help urinate, in order to prevent a series of complications caused by excessive urine accumulation . At present, most methods for detecting bladder urine volume use methods such as manual estimation, ultrasound or pressure, which are mostly static monitoring, and cannot monitor the urine volume of a patient's bladder in real time and accurately. [0003] In recent years, bioelectrical impedance technology has been applied to the dynamic monitoring of bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/053A61B5/20
CPCA61B5/0536A61B5/204
Inventor 蒋庆李日辉吴俊鹏李雅宁刘飏
Owner SUN YAT SEN UNIV
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