Inclined plate type mechanical pain-sensitivity determining device

Abstract

The invention relates to an inclined plate type mechanical pain-sensitivity determining device which adopts the structure that the bottom side of a vertical plate is vertical to a horizontal plate; the horizontal plate and an inclined plate positioned above the horizontal plate are rotatably connected through a shaft lever; a wire mesh is arranged in the middle of the inclined plate; a magnet is positioned below the wire mesh, a probe is arranged on the magnet and extends out of the wire mesh; angle measuring scales are radially marked on the vertical plate from the left bottom corner to the right top corner. According to the invention, the defects in the prior art that the price is expensive, users are easy to suffer from cervical vertebra strain, the probe is easy to damage, and the pain-sensitivity threshold value of the bottom of only one paw can be determined once are overcome; the determining device has the advantages that the manufacture is simple; angle is used for grading pain degrees, can be directly used as a comparison parameter, and can be converted into force F for comparison according to the formula: F=0.25mgcos alpha, so that the determination accuracy is good; through the measurement of the weight of rats, the paw withdrawal mechanical threshold (the probe irritation force F) of rats can be accurately calculated; therefore, the determining device is applicable to the determination of mechanical pain threshold values of big and small animals.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a slant plate mechanical pain sensitivity measuring device. 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 injured site and adjacent tissues. Chronic pain has the characteristics of complex pathogenesis 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 measurement is most commonly used. [0004] Before the p...

AI Technical Summary

Problems solved by technology

Although its measurement sensitivity is high, there are serious defects: 1. The price is high and the availability is poor; 2. The user is prone to cervical spine strain: because the observer needs to constantly align the soles of the feet at the bottom of the grid, turning the head and tilting up for a long time It will cause cervical spine strain; 3. The probe is fragile, and the probe damage is a fine part, which determines the sensitivity of the machine and is easy to damage, and the maintenance cost is expensive

4. Only the pain sensitivity threshold of one sole can be measured at a time, and the pain sensitivity threshold of the test group and the control group cannot be obtained in pairs. It is necessary to develop the device

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