RU162527U1 - DEVICE FOR FIXING AN EXPERIMENTAL ANIMAL WHEN A BIOPSY MATERIAL IS TAKEN FROM THE MOUTH - Google Patents

Abstract

A device for fixing an experimental animal during sampling of biopsy material from the oral cavity, characterized in that it contains a fixing part made of organic glass, along the center line of which there is a recess for the animal, a multifunctional arched body position lock, side limb clips with clamps, an adjustment screw for fixing the lower jaw, located in the fixing part, and an adjusting screw for fixing the upper jaw, located on the arch lock of the position of the body and, wherein the inside fixing recess portions are grooves for fixing the clamp arch torso.

Description

The utility model relates to experimental medicine, namely, to devices for fixing small experimental animals (rat, mouse) while sampling biopsy material from the oral cavity.

There is a device for fixing and manipulating small experimental animals (mice, rats) containing a base made of a homogeneous material transparent to the radiation used, which is especially important when conducting electrophysical, biological, biophysical and diagnostic studies on laboratory animals. A hole for a toilet with a bathtub is made in the rear part of the recess. The presence of soft bedding under the animal and openings for the toilet with a bath ensures sanitary cleanliness during a long experiment. The dimensions of the device can be made in accordance with the specified dimensions of the animal. Using the invention will allow to create favorable conditions for the placement of a laboratory animal during experiments and studies (Tishchenko V.V., Kaplan MA "Device for fixing laboratory animals" Registration No. RU 2375012, publication date 05/20/2008).

The closest design is the “Device for the collection of biological fluids from small laboratory animals” (A. Werner, publication date 06/30/2002, patent registration number - BY 580), consisting of a support housing with a special lodgement and mounting elements for it. In addition to fixing the animal for the limbs, it is provided for fixing for the upper incisors, for which there is a special loop on the tool tray. In two U-shaped racks two guides are fixedly fixed with a support body mounted on them, having a groove equal in length to the span of the upper and lower extremities of a small laboratory animal. In order to clarify the parameters of the surface of the body of the animal on the lodgement, there are special rulers. However, these devices do not allow optimal fixation of the animal during the sampling of biopsy material from the oral cavity.

The goal achieved using the utility model is to provide the necessary fixation of the experimental animal (rat, mouse) in a position that provides optimal conditions for the collection of biopsy material from the oral cavity.

This goal is achieved by the fact that the device for fixing the experimental animal during the sampling of biopsy material from the oral cavity includes a fixing part, along the center line of which a recess has been made for the animal, which allows it to limit its field of view. To ensure the plane fixation of the animal there is a multifunctional body position lock. It can be made in the form of an arch and with holes depending on the tasks to be solved; in the area of limbs, clamps with clamps are made along the edges of the base; motionlessly connected to the base of the supporting part, consisting of a homogeneous material.

In FIG. 1 shows a device for fixing an experimental animal while sampling biopsy material, general view; in FIG. 2 - the same, in working condition.

A device for fixing an experimental animal during sampling of biopsy material from the oral cavity consists of a fixing part 1 made of organic glass, along the center line of which a recess 2 is made, inside of which there are grooves for fastening the arch fixer of the position of the body 3; lateral limb retainers 4, 5 clamps, 6 - protrusions for attaching the limbs of a laboratory animal, 7 - recess for the limbs; 8 - the field of view limiter, which ensures the psycho-functional state of the animal (reducing the influence of visual external stimuli); 9 - an adjusting screw for fixing the jaws: the lower one is located in the fixing part, and the upper one is on the arched lock of the body position; 10 - clamp for fastening the jaws; 11 - arched retainer. The recess 2 is fixedly connected to the fixing part.

The device operates as follows.

The experimental animal (rat, mouse) is placed in the recess 2 accordingly, depending on the planned experiment (placed on the stomach or back), to ensure the fixation of the animal’s body, an arch lock of the position of the body 11 is used, the upper and lower jaws are fixed using the clamp for jaws 10. The extremities of the animal with a soft cord are laid in the recesses 7. The ends of the cord are wound on the protrusions 6, they are immobilized with lateral clamps of the extremities 4, and fixed with clamps 5. The animal is quite natural Twain, first trying to get rid of attachment, but after several attempts to soothe and relax, without discomfort. The movement of the animal is limited by an arch lock of the position of the body 11. Optimal access to the oral cavity is provided by an adjustment system including a screw for fixing the lower and upper jaws 9; 10 - clamp for fastening the jaws. The upper jaw is fixed due to the screw located on the body position lock, and the lower jaw due to the adjustment screw located on the fixing part 1. After the animal is fixed, we have safe access to the oral cavity, where we can carry out all the necessary types dental interventions: therapeutic, surgical, orthopedic.

Claims (1)

A device for fixing an experimental animal during sampling of biopsy material from the oral cavity, characterized in that it contains a fixing part made of organic glass, along the center line of which there is a recess for the animal, a multifunctional arched body position lock, side limb clamps with clamps, an adjustment screw for fixing the lower jaw, located in the fixing part, and an adjusting screw for fixing the upper jaw, located on the arch lock of the position of the body and, wherein the inside fixing recess portions are grooves for fixing the clamp arch torso.

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