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Non-wound esophageal varix venous pressure analyser

A technology of venous pressure and esophageal tortuosity, applied in catheters, cardiac catheters, etc., can solve the problems of insufficient use of computers, data computer analysis, and inability to repeat pressure measurement, so as to reduce risks, reduce economic pressure, and optimize the pressure measurement process. Effect

Inactive Publication Date: 2005-12-21
HUNAN UNIV
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Problems solved by technology

Because puncture manometry is a recognized standard manometry method, but it has its fatal weakness in scientific research and clinical application
The first is that the manometry cannot be repeated, the second is that 1 / 3 of the patients cause massive bleeding due to puncture, and the third is that the puncture manometry may cause bacterial infection
[0004] According to related reports, foreign non-invasive manometers have transitioned from the initial analog instrument recording pressure to the current digital measuring instrument, but only record the measured value, and do not perform computer analysis on the data, and do not make full use of the advantages of the computer.

Method used

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  • Non-wound esophageal varix venous pressure analyser
  • Non-wound esophageal varix venous pressure analyser
  • Non-wound esophageal varix venous pressure analyser

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Embodiment Construction

[0014] Such as figure 1 As shown, the non-invasive esophageal varices pressure measuring instrument includes a PC 1, a communication circuit 2, a microcontroller 3, a drive circuit 4, an air pump 5, a first pressure sensor 10, a second pressure sensor 12, and an A / D converter 9. Air box 6, gas sensor probe 8, PC 1 is connected to microcontroller 3 through communication circuit 2, the input end of drive circuit 4 is connected to microcontroller 3, and its output end is connected to air pump 5, and air pump 5 is connected to air box 6 are connected, and the air box 6 is provided with an air resistance 11 composed of capillary plates. The air resistance 11 is connected to the gas sensor 8 through the conduit 7. The air resistance 11 can make the air pressure in the conduit increase approximately linearly after the air loss. Useful for pressure measurement. The first pressure sensor 10 is installed in the air box 6, the second pressure sensor 12 is installed in the conduit 13, th...

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Abstract

The present invention discloses a non-invasive esophageal varicose vein pressure measuring instrument. It includes PC machine, communication circuit, microcontroller, drive circuit, air pump, first pressure sensor, second pressure sensor, A / D converter, air tank and probe. Besides, said invention also provides the connection mode of all the said components.

Description

technical field [0001] The invention relates to a noninvasive esophageal varices pressure measuring instrument. Background technique [0002] Rupture and bleeding of esophageal varices is the most dangerous complication in patients with cirrhosis and portal hypertension. Prospective studies have shown that when the venous blood pressure at this place is greater than 15mmHg, the possibility of bleeding is 78%. It is extremely important to identify high-risk groups and develop a reasonable treatment plan. [0003] The pressure measurement of esophageal varices is performed endoscopically. There are two techniques, namely, intravenous manometry and extravenous manometry. The former measures pressure by puncturing varices with a fine needle. It was first reported by Palmer in 1951 and is still in use today. . Because puncture manometry is a recognized standard method of manometry, but it has its fatal weakness in scientific research and clinical application. The first is that...

Claims

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Application Information

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IPC IPC(8): A61B5/0215
Inventor 罗安吴建峰赖朝森何伟
Owner HUNAN UNIV
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