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Method and device for directly measuring articular surface pressure in real time

An articular surface, direct technology, applied in the field of biomechanics, can solve problems such as no method developed, and achieve the effect of strong practicability, high reliability and strong portability

Active Publication Date: 2021-10-01
PEKING UNIV SCHOOL OF STOMATOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But as far as the inventors of the present invention know, no effective method has been developed so far

Method used

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  • Method and device for directly measuring articular surface pressure in real time
  • Method and device for directly measuring articular surface pressure in real time
  • Method and device for directly measuring articular surface pressure in real time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] First, if figure 2 As shown, a piece of silicone rubber material suitable for the size of the condyle surface was intercepted, silver nanowires were attached to the upper and lower surfaces of the silicone rubber, titanium alloy wires were bonded to the upper and lower surfaces of the silver nanowires, and poly The vinyl coating encapsulates the device, and the flexible pressure sensor is obtained after curing.

[0031] Further, establish a rat model of temporomandibular joint irreducible prediscal displacement, such as Figure 4 As shown, the flexible pressure sensor is glued on the surface of the condyle of the rat, and the wires at both ends of the flexible pressure sensor are connected to the signal acquisition device and the signal output device, and the signal output device outputs the capacitance change value during the opening and closing movement of the rat to realize Real-time corresponding record of mouth opening and closing movement and condylar surface st...

Embodiment 2

[0035] First, if figure 2 As shown, a piece of silicone rubber material suitable for the size of the condylar surface was intercepted, the silver nanowires were attached to the upper and lower surfaces of the silicone rubber, the copper wires were bonded to the upper and lower surfaces of the silver nanowires, and polypropylene The coating encapsulates the device, and the flexible pressure sensor is obtained after curing.

[0036] Further, establish a rat model of temporomandibular joint irreducible prediscal displacement, such as Figure 4 As shown, the flexible pressure sensor is glued on the surface of the condyle of the rat, and the wires at both ends of the flexible pressure sensor are connected to the signal acquisition device and the signal output device, and the signal output device outputs the capacitance change value during the opening and closing movement of the rat to realize Real-time corresponding record of mouth opening and closing movement and condylar surfac...

Embodiment 3

[0040] First, if figure 2 As shown, a piece of silicone rubber material suitable for the size of the condylar surface was intercepted, the silver nanowires were attached to the upper and lower surfaces of the silicone rubber, the copper wires were bonded to the upper and lower surfaces of the silver nanowires, and polypropylene The coating encapsulates the device, and the flexible pressure sensor is obtained after curing.

[0041] Further, a mouse model of unilateral anterior crossbite was established, such as Figure 4 As shown, the flexible pressure sensor is bonded to the surface of the condyle of the mouse, and the wires at both ends of the flexible pressure sensor are connected to the signal acquisition device and the signal output device, and the signal output device outputs the capacitance change value during the movement of the mouse's jaw to realize Real-time corresponding recording of mandibular movement and force on condyle surface.

[0042]Further, in the in vit...

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Abstract

The invention discloses a method and device for directly measuring articular surface pressure in real time, the device is composed of a flexible pressure sensor, a signal acquisition device and a signal output device, the flexible pressure sensor converts a pressure signal in a joint into an electric signal, and then the signal acquisition device and the signal output device are used for respectively acquiring and outputting electric signal data. By utilizing the characteristic that the sensor arranged in the joint can convert a pressure signal into an electric signal which can be output under a pressure condition, accurate measurement and real-time monitoring of the pressure change of the joint surface are realized. The device is suitable for various disease models, such as joint disc displacement, joint disc perforation, anterior cruciate ligament fracture, degenerative joint diseases and the like.

Description

technical field [0001] The invention belongs to the field of biomechanics, and relates to a pressure measurement method and device, in particular to a method and device for directly measuring articular surface pressure in real time, which are composed of a flexible pressure sensor, a signal acquisition device and a signal output device. Mechanical properties of the articular surface of experimental animals under physiological state and different pathological states. Background technique [0002] Joints play an indispensable and important role in maintaining the daily life and work of the human body. Today, with the general emphasis on health, joint diseases have attracted more and more attention because of their great impact on the quality of human life. Degenerative joint disease (DJD) is the most common joint disease and the main cause of physical disability. Its etiology is complex and diverse, and its pathological mechanism is still unclear. Although the comprehensive...

Claims

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Application Information

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IPC IPC(8): A61B5/00
CPCA61B5/00A61B5/6878A61B5/4528A61B5/4585A61B2503/40A61B2503/42A61B2562/0247
Inventor 冯诗阳李毓祥傅开元王冉冉王衣祥孙静
Owner PEKING UNIV SCHOOL OF STOMATOLOGY
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