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Portable Mechanical Pain Sensitivity Tester

A portable and measuring device technology, applied in the field of medical equipment, can solve the problems of measurement dependence on power supply, bulky instruments, and poor availability, and achieve the effects of good measurement sensitivity, simple operation, and good availability

Inactive Publication Date: 2018-04-17
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

Although its measurement sensitivity is high, its biggest disadvantages are: 1. High price and poor availability; 2. The probe is fragile, and the probe is a delicate part, which determines the sensitivity of the machine. Once damaged, the maintenance cost is expensive ; 3. Measurement depends on power supply; 4. Traditional instruments are relatively bulky

Method used

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  • Portable Mechanical Pain Sensitivity Tester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Direct Mode (Taking Rats as an Example)

[0030] (1) By debugging the screw 3-3, the refill 6 can be aligned with the zero scale of the curved scale 4-2 for zero calibration;

[0031] (2) Hold the cylinder 4-1 in hand, point the probe 1 vertically upward at the sole of the rat's foot, and slowly lift the sole of the foot. If the rat does not feel pain at this time, it will not lift the foot. At this time, the cylinder The spring 5 in 4-1 will always be compressed as a compression spring, because the disc 2-2 is fixed on the upper end of the spring 5, and correspondingly its downstream integrated parts such as the recording part will have a relative displacement with the cylinder 4-1, as shown in the figure, due to There is magnetic attraction between the metal tube 3-2 and the curved scale 4-2, so the pen core 6 fixed in the metal tube 3-2 will leave a track when sliding down on the curved scale 4-2 , and because the refill always slides in the groove on the concave ce...

Embodiment 2

[0034] Indirect mode (take rats as an example)

[0035] (1) After adjusting the screw 3-3 to complete the zero calibration, insert a heavy object with a predetermined weight (such as 30g) on ​​the probe 1, record the track length s, and obtain the elastic coefficient k=mg / s of the spring 5 through calculation;

[0036] Before the determination, the rats to be tested were weighed, and the mass was m;

[0037] (2) Adjust the screw 3-3 to complete the zero calibration again;

[0038] (3) Hold the cylinder 4-1 in hand, point the probe 1 vertically upward at the sole of the rat's foot, and slowly lift the sole of the foot. If the rat does not feel pain at this time, it will not lift the foot. At this time, the cylinder The spring 5 in 4-1 will always be compressed as a compression spring, because the disc 2-2 is fixed on the upper end of the spring 5, and correspondingly its downstream integrated parts such as the recording part will have a relative displacement with the cylinder ...

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Abstract

The invention relates to a portable mechanical pain sensitivity detector. The structure of the present invention is that the probe is connected to the shaft, the shaft passes through the cylinder and is connected to the recording part, the recording part is connected to the refill, and an arc-shaped scale is arranged beside the refill; a spring is arranged inside the cylinder, and the bottom of the cylinder is connected There is a round tube; the probe includes a needle body and a base, the core includes a shaft, a disc, and an upper screw, the recording part includes a wire, a metal tube, and a lower screw, and the cylindrical part includes a cylinder , Arc surface scale, round tube. The invention overcomes the defects of high price, fragile probe, dependence on power supply, relatively bulky and the like. The measuring device of the present invention is simple to prepare, and probes, shafts, metal wires, cylinders, circular tubes, springs, etc. are commonly used items to measure the degree of pain sensitivity of rat limbs, with good sensitivity and simple operation, without special equipment and without Power supply and other special conditions are more energy-saving and environmentally friendly than traditional methods.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a portable mechanical pain sensitivity detector. Background technique [0002] Pain is divided into acute pain and chronic pain. Acute pain is one of the body's protective reflexes, but chronic pain is often a morbid manifestation. Chronic pain often manifests as hyperalgesia and paresthesia at the site of injury and adjacent tissues. It has the characteristics of complex etiology and mechanism, and is difficult to relieve. Basic research on its mechanism and treatment strategies has always been a research hotspot. [0003] Experimental chronic pain research is inseparable from the measurement of pain behavior. Since pain is a subjective feeling and animals cannot express pain perception, it often involves the measurement of mechanical hyperalgesia and thermal hyperalgesia. The mechanical hyperalgesia The measurement is most commonly used. [0004] Before the present invention, V...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00
Inventor 荣辉马正良顾小萍邵学明
Owner THE AFFILIATED DRUM TOWER HOSPITAL MEDICAL SCHOOL OF NANJING UNIV
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