Artificial calculus preparation method

A calculus and artificial technology, applied in the medical field, can solve the problems of high cost, inconvenience, and inability to popularize and apply, and achieve the effect of easy popularization and convenient and simple method.

Inactive Publication Date: 2012-10-17
THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also many ways to make artificial stones with other compounds, but generally speaking, either the physical properties of the artificial stones produced are not typical enough, although the production is convenient and simple, or the physical properties are similar to natural stones, but the production methods are too complicated and the cost is low. High, inconvenient or impossible to promote the app

Method used

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  • Artificial calculus preparation method
  • Artificial calculus preparation method
  • Artificial calculus preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 2 , image 3 Shown:

[0024] Calcium sulfate hexahydrate (CaSO 4 ·6H 2 O) 95% by weight, 1% 0 Polyacrylamide accounts for 5% by weight, and stirs and mixes it quickly in a beaker to make the slurry of the model stone; pour the prepared slurry into each cylindrical hole in the mould, and shake the mold gently while scraping to make The slurry fully fills the cylindrical hole, and the air bubbles in the slurry are discharged; use a smooth and straight plastic plate to scrape the slurry outside the protruding hole; air dry naturally, and wait for the slurry in the cylindrical hole to fully solidify; Remove the nut, separate the model stone mold, and take out the model stone, that is, the artificial stone.

Embodiment 2

[0026] Choose calcium sulfate hexahydrate to account for 90% by weight, 1% 0 Polyacrylamide accounts for 10% by weight, and the rest is the same as in Example 1.

Embodiment 3

[0028] Choose calcium sulfate hexahydrate to account for 85% by weight, 1% 0 Polyacrylamide accounts for 15% by weight, and the rest is the same as in Example 1.

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Abstract

The invention relates to an artificial calculus preparation method, which is required by the efficacy detection of extra-corporeal lithotriptor with ultrasonic shock-waves. The invention comprises the steps: fixing two templates on a bottom plate to form a mould; selecting 80-90 wt% of calcium sulfate hexahydrate and 15-5 wt% of polyacrylamide of which the consistence is 0.1%; quickly and evenly stirring; putting into the mould; striking off size extruding out of aperture by a plastic plate, and naturally drying in the air; solidifying, removing nuts, separating a model calculus mould, and taking out the model calculus. The invention overcomes the defects that the existing artificial calculus has atypical physical property, or physical property is similar to natural calculus, the preparation method is too complex, cost is high and the like. The physical property of the artificial calculus prepared by the invention is similar to whewellite calculus, can obtain vivid detection data and is favourable for accurately evaluating efficacy situation thereof, and the method is simple and convenient.

Description

technical field [0001] The invention relates to the field of medicine, in particular to a method for preparing artificial stones required for performance testing of an extracorporeal shock wave lithotripter. Background technique [0002] Extracorporeal shock wave lithotripsy is the method of choice for the treatment of urinary stones today. At present, the service life of the shock wave lithotripter is about 5-8 years, and in the process of clinical application, its performance will decrease year by year, which will affect the clinical treatment effect, and may even cause additional damage, especially for the electromagnetic lithotripter. In other words, the service life of the electromagnet is about 1 million times, and its lithotripsy efficiency decreases with the number of times of use, resulting in unstable quality of the machine, which leads to problems in clinical treatment. Therefore, regular testing of its effectiveness is necessary. [0003] It is undoubtedly a go...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14A61B17/225
Inventor 孙西钊张东方丛小明
Owner THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV
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