Uniformly-transmitting pressure sensor used for artificial anal sphincter system

An artificial anus and sensor technology, applied in the direction of sensors, muscles, applications, etc., can solve the problems of staying, the accuracy of measurement data to be verified, and the lack of uniform transmission pressure

Inactive Publication Date: 2014-04-02
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, implantable pressure sensors have broad application prospects, but most of the existing sensors do not meet the requirements for implantation, and pressure sensors that meet ...

Method used

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  • Uniformly-transmitting pressure sensor used for artificial anal sphincter system
  • Uniformly-transmitting pressure sensor used for artificial anal sphincter system

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Experimental program
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Embodiment 1

[0021] Such as figure 1 As shown, this embodiment includes: a wrapping film 1, a sensor die 2, a fixing ring 3, a fixing circular plate 4, an injection hole 5, and a liquid medium 6, wherein: the sensor die 2 is fixed on the fixing plate 4, and the wrapping film 1 Fused with the outer wall of the fixed plate 4, the fixed ring 3 is used to clamp the end of the film 1, which is convenient for the film to expand and bear force, and the medium 6 is injected to realize filling.

[0022] The pressure sensor in this embodiment is a contact pressure sensor with a specification of 2.2 mm*2.7 mm and a measuring range of 1 to 10 bar, and the contact surface can be soaked in water for a long time.

[0023] The sensor fixing plate of this embodiment includes a sensor compensation processing circuit, and its specifications are controlled within φ4mm. The fixing plate is provided with an injection hole 5 for injecting a liquid medium. After the injection is completed, it is plugged with an e...

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Abstract

A uniformly-transmitting pressure sensor used for an artificial anal sphincter system and in the technical field of medical instruments comprises a closed cavity formed by a hemispheric wrapping layer and a fixing plate, a sensor bare chip arranged inside the closed cavity, and a liquid or gaseous medium used for uniformly transmitting pressure. The sensor bare chip is fixedly arranged on the inner side of the fixing plate, a signal leading-out welding pad is arranged on the outer side of the fixing plate correspondingly, and a micro circuit board is arranged on the fixing plate and comprises a bridge-type compensation circuit which is connected with the sensor bare chip. The uniformly-transmitting pressure sensor is mainly applied to elastic scaling-type artificial anal sphincter prostheses, finger-lock-type artificial anal sphincter prostheses and the like and is suitable for implanted systems which need to contact with intestinal walls to collect pressure, uniform transmitting of pressure value is realized, measuring effect of the pressure sensor is improved, and effective measuring of biotic pressure signals in-vivo intestinal tracts in complex intestinal tract environment is realized.

Description

technical field [0001] The present invention relates to a device in the technical field of gastrointestinal tract medical devices, in particular to a uniform transmission pressure sensor used in the artificial anal sphincter system, which is embedded in the artificial anal sphincter prosthesis to measure the The occlusal pressure and the biological pressure value of the intestinal tract. Background technique [0002] Gastrointestinal disorders are common clinical symptoms. According to statistics, the incidence of fecal incontinence in adults is as high as 2%, and the incidence of people over 65 years old can reach 7%. In the treatment of intestinal diseases, there are many implantable medical devices at home and abroad, such as artificial anal sphincter, gastrointestinal stimulator, etc. These implantable devices can provide patients with a safer and more convenient treatment plan, and have good application prospect. Many implanted devices need to collect pressure signals...

Claims

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Application Information

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IPC IPC(8): A61B5/03A61F2/08
Inventor 王志武颜胜颜国正克磊刘大生姜萍萍李晓阳
Owner SHANGHAI JIAO TONG UNIV
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