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Testing method and testing device in dynamics of living body

A testing method and technology of testing equipment, applied in the fields of medical science, diagnostic recording/measurement, urinary function evaluation, etc., can solve the problems of pressure test fluctuations, medium fluctuations, affecting the accuracy of urethral manometry, etc., to meet market demand, The effect of low cost of equipment manufacturing

Active Publication Date: 2006-12-06
成都维信电子科大新技术有限公司
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Problems solved by technology

When performing urethral manometry, a perfusion rate of 2-10ml / min is generally used, which is a low-speed perfusion (compared to cystometry, and a perfusion rate of 10-100ml / min is generally used for cystometry). The rotating wheel shaft of the equipment is in point-line contact with the perfusion catheter when it is extruded, and because of the manufacturing error of the parts, during the test perfusion process, there is extrusion discontinuity when the rotating wheel shaft squeezes the perfusion catheter at a constant speed. There will be large fluctuations inside the perfusion medium, which will be transmitted to the pressure measuring point of the pressure measuring tube through the liquid path, and will have a fluctuating influence on the pressure test
When the axle rotates slowly, the fluctuation of the medium is particularly obvious, thus affecting the accuracy of urethral pressure measurement

Method used

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  • Testing method and testing device in dynamics of living body

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Embodiment

[0019] The measuring equipment for measuring urinary tract pressure is adopted combining injection technology and perfusion technology, and the pressure measuring tube is made of non-toxic medical materials. The constant-velocity perfusion tube is made of silica gel material into a curved tube with an aperture of 8mm and a length of 300mm, and a 50ml syringe. The motor is a stepping motor imported from Japan, which is connected to the syringe through the worm gear transmission, and the parts are pressed according to the figure 2 Just assemble.

[0020] Measuring urethral pressure, using injection technology for low-speed perfusion pressure measurement, first suck the pressure medium into the syringe, insert one port of the pressure measuring tube 1 in the measuring device into the urethra directly to the bladder, and connect the other port to the pressure sensor, start the motor to transmit Mechanism 9 pushes the syringe 8 to infuse the pressure medium at a rate of 2ml / min, ...

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Abstract

A test method used in bio-kinetics for measuring the kinetic parameters of living things features use of a constant-speed perfusion method combining pressure- measuring inject with pressure-measuring perfusion. Its apparatus is composed of pressure measuring tube and constant-speed perfusion unit connected to injector and motor drive mechanism.

Description

technical field [0001] The invention belongs to medical testing equipment, which is used for biodynamic examination Background technique [0002] Biodynamic examination is a branch of urology and gastroenterology. It checks the pressure, flow rate and bioelectric activity of various parts of the gastrointestinal tract and urinary tract based on the basic principles and methods of fluid mechanics and electrophysiology, so as to understand the biological Function and mechanism, and pathobiology of dysfunctional diseases. To this end, it is necessary to use biodynamic measuring instruments to test various indicators of urodynamics and gastrointestinal motility. Existing measuring instruments, such as the patent ZL02149744 "non-invasive urodynamic instrument", inject a harmless medium to the patient intravenously, and use multiple B-type ultrasonic probes to detect the patient's urine storage and urination from different angles. For the condition of the bladder and urethra, th...

Claims

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Application Information

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IPC IPC(8): A61B5/20A61B5/03
Inventor 王新扬
Owner 成都维信电子科大新技术有限公司
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