Device for detecting intervertebral disc pressure

Abstract

The invention relates to a device for detecting intervertebral disc pressure, comprising a plurality of resistance strain gauges (1) which are stuck to the detected position of the surface of intervertebral disc and used for detecting signals and a stress detection transmitter (2) which is electrically connected with the resistance strain gauges (1), wherein the stress detection transmitter (2) comprises inner bridge units, operation amplifier units, analog-to-digital conversion units and wireless transmission modules which are successively electrically connected; the inner bridge units and the corresponding resistance strange gauges (1) constitute bridges; the resistance strain gauges (1), the inner bridge units, the operation amplifiers and the analog-to-digital conversion units have the same number and correspond with one another. The device further comprises an upper computer which is in wireless communication with the stress detection transmitter (2). The device can realize trauma-free direct nondestructive test or measurement of pressure of intervertebral disc.

Description

technical field [0001] The invention relates to medical electronic instruments, in particular to an intervertebral disc pressure detection device for direct non-destructive measurement. Background technique [0002] The cervical spine occupies an extremely important position in the human body. The degeneration or herniation of the cervical intervertebral disc can cause a series of clinical symptoms. What is related to the degeneration or herniation of the cervical intervertebral disc is the change of the pressure in the nucleus pulposus and the pressure change of the upper and lower sections of the intervertebral disc. In medicine, these two data are important indicators for maintaining the stability of the cervical spine, and they are also clinically important data. Therefore, it is extremely important to measure the pressure in the nucleus pulposus of the cervical intervertebral disc. However, it is very difficult to directly measure the pressure in the nucleus pulposus o...

AI Technical Summary

Problems solved by technology

However, it is very difficult to directly measure the pressure in the nucleus pulposus of the cervical intervertebral disc in clinical practice, and more importantly, it is unsafe for the human body. There is a damage test, such as: choose a medical silicone tube with an outer diameter of Φ1.2mm and an inner diameter of Φ0.8mm to cover the pressure measuring port at the front end of the pressure measuring needle, let the silicone tube cover go deep into the center of the nucleus pulposus, and then use EI-P929 program control Manometry recording, thereby measuring the pressure value of the nucleus pulposus center under loading conditions

[0003] On the other hand, the resistance strain gauge is a sensing element whose resistance value changes correspondingly when a conductor or semiconductor material is mechanically deformed under the action of an external force. At present, it is mainly used to detect the deformation of solid substances such as metals. applications, as there are specific technical issues

For direct nondestructive measurement of intervertebral disc pressure, especially direct nondestructive measurement of intervertebral disc pressure using electrical resistance strain gauges, it is necessary to overcome the technical problems of too small or tiny direct pressure or indirect pressure sensing signals in this case, including: ① Accurate amplification of tiny signals, including two major parts of detection and amplification; ② Electromagnetic interference problem, because it is a tiny signal, it is easy to distort the signal due to internal and external electromagnetic interference

Also faced industry-specific issues requiring fit into small, compact surgical environments

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