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Portable mechanical hyperalgesia measuring apparatus

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

Inactive Publication Date: 2016-04-13
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 hyperalgesia measuring apparatus

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 integral parts such as the recording part will have a relative displacement with the cylinder 4-...

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Abstract

The invention relates to a portable mechanical hyperalgesia measuring apparatus. The portable mechanical hyperalgesia measuring apparatus is structurally characterized in that a probe is connected with a shaft lever, the shaft lever penetrates a barrel to be connected with a recording component, the recording component is connected with a pen refill, and a cambered-surface graduated scale is arranged beside the pen refill; a spring is arranged in the barrel, and a circular tube is connected onto the inner bottom of the barrel; the probe comprises a probe body and a base, a core comprises the shaft lever, a disc and an upper screw, the recording component comprises a metal wire, a metal tube and a lower screw, and a barrel component comprises the barrel, the cambered-surface graduated scale and the circular tube. The portable mechanical hyperalgesia measuring apparatus has the advantages that shortcomings of high prices, vulnerable probes, dependence on power sources, bulkiness and the like can be overcome by the aid of the portable mechanical hyperalgesia measuring apparatus; the portable mechanical hyperalgesia measuring apparatus is easy to manufacture, the probe, the shaft lever, the metal wire, the barrel, the circular tube, the spring and the like are frequently used articles, hyperalgesia degrees of four limbs of a rat can be measured by the portable mechanical hyperalgesia measuring apparatus, the portable mechanical hyperalgesia measuring apparatus is good in sensitivity and easy to operate and is energy-saving and environmental friendly as compared with the traditional method, and special devices, power sources and other special conditions can be omitted.

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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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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