Adjustable rat fixer

Abstract

The invention belongs to the technical field of experimental instruments, and particularly relates to an adjustable rat fixer. A left fixed baffle plate or right fixed baffle plate is fixed onto a main bottom plate of the adjustable rat fixer, a right fixed baffle plate or left fixed baffle plate is fixed onto a lower bottom plate, inserting gaps with regular spacing are formed in the right fixedbaffle plate and the left fixed baffle plate, so that a tail inserting plate and a front inserting plate are inserted into the inserting gaps, so that fixed lengths are adjusted, and a fixed needle isinserted into holes in the tail inserting plate and the front inserting plate according to the body shape of a rat, so that the height of the rat is fixed. According to the novel adjustable rat fixer, spring tension is adjusted, tightness degree of screws at two ends of the main bottom plate is adjusted, an upper bottom plate and the lower bottom plate are adjusted, so that the fixer is adjusted,the fixer is simple and convenient to operate, high in reliability, rats with different body shapes are met, the fixer adopts prone positions of the rats, original physiological lying positions of the rats are kept, stress reaction of the rats is decreased, and the fixer is detachable, so that the fixer is convenient to clean and simple to assemble.

Description

technical field [0001] The invention belongs to the technical field of experimental equipment, in particular to an adjustable rat fixator. Background technique [0002] Rats are routine animal experiment subjects, and they are difficult to fix because of their ferocious temperament, strong aggressiveness, and easy irritation. The fixation of rats is the basic requirement of the experiment. Commonly used experimental operations such as tail vein injection and blood drawing, rat tail pressure measurement, etc. all require the cooperation of fixed rats. If rats are anesthetized to achieve fixed purposes, not only is the dose of anesthesia difficult to control, resulting in high animal mortality, but most importantly, it will affect the accuracy of the experiment and violate the rigor of scientific research. How to successfully complete various experimental projects on rats under the premise of safety and feasibility is the primary problem faced by the experiment. [0003] In ...

AI Technical Summary

Problems solved by technology

Most of the rat holders currently on the market are made of plexiglass or stainless steel, with a single structure and many fixing points. The same fixing operation must be repeated for each experiment, which increases the labor intensity of the operator and wastes time. Experiment time

And most of them are barrel-shaped, with closed space and single function, which is very harmful to rats and does not meet the 3R (reduce, replace, optimize) principle and the ethical requirements of experimental animals.

The existing barrel-shaped fixer, because of its fixed model, often does not fit well with the body shapes of rats of different weights, causing the rats to suffocate and suffocate, and may also cause the rats to turn around and bite the experimental operator, which not only affects the experimental efficiency and accuracy, but also increases the risk of injury to experiment operators

In addition, due to the single model structure and function of the fixer, only a single experiment can be carried out on some rats, which cannot meet the experimental requirements of rats of all sizes. It is necessary to purchase other types of fixers for experiments, which increases the cost and resources of the experiment. consume

[0004] At present, there are also some fixing devices for rat experiments, such as Chinese patent "CN205866887U", which uses Velcro straps to fix the rat's fixer, which cannot solve the problem that rats are easy to break free in a stressful environment; Chinese patent "CN205459183U "The announced device is set in a cylindrical mesh shape, and the rats are prone to stress reactions when entering the holder, scratching the mesh holder and injuring the experimental rats, and it is difficult to enter after repeated use of the rat to form a memory; Chinese patent "CN201578395U" The announced device only has the flexibility of forward and backward movement; the device disclosed in the Chinese patent "CN206324878U" is also an adjustable rat immobilizer, but since the immobilizer includes a fixation platform and a cross hole and a separate head immobilizer and limb immobilizer The device increases the operating procedures, which makes the operation more difficult and reduces the efficiency of the experiment

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