JPH0135174Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a net cage for raising small experimental animals such as rats and mice.

[Problems to be solved by the conventional technology and the present invention]

Automatic water supply to cages for breeding small experimental animals such as mice and rats has been quite successful, but when placing cages on shelves where many cages are placed, Breeding cages in which an automatic waterer is inserted into the cage have the following problems.

Mice and rats weigh between 10g and 30g and can easily escape through a 7mm square window in their breeding cage. Also, even with a window of this size, while the tip of the automatic water dispenser is inserted into the window and inside the cage,
Although the animals do not escape, when we perform experiments by injecting or administering chemicals to small animals in cages, we remove the cages from the breeding racks and move them to the experimental table.
When the cage is removed from the breeding shelf where the automatic waterer is installed, the tip of the automatic waterer is inserted and the cage window, which used to be narrow, now appears to be wider for the small animals in the cage. It feels like this, and it escapes from the window while the cage is being moved.

Normally, a 6mm square square window is made into which the tip of the automatic waterer is inserted, but it is possible to disinfect, wash, or high-pressure and high-temperature sterilize the breeding rack and cage. It becomes deformed and the tip of the automatic water dispenser cannot be inserted into the slot in the cage window. If you increase the size of the cage to about 20mm square, you won't have to worry about the slight deformation, but if you remove the cage from the shelf, the small animals inside the cage will run away.

Therefore, in view of the above points, the present invention is designed to make the small animal in the cage feel that the window space is small when the automatic waterer inserted into the insertion window at the tip of the automatic waterer in the rearing cage is removed. , two chains or coiled wires are suspended.

[Structure of the idea]

To explain the present invention with reference to the drawings, the drawings are perspective views of a mesh cage for rearing in which windows 3 and 4 of the present invention are implemented in a double cage in which rearing cages 1 and 2 are integrally formed.

When this cage is placed on a breeding rack equipped with an automatic waterer, the tips of the automatic waterer can be inserted into the windows 3 and 4 of these cages 1 and 2. 5 and 6 are two chains or coiled wires suspended from these cage windows, and when the tip of the automatic water dispenser is inserted, these chains open left and right, so that there is no obstacle to inserting the chains. Don't get tired. Furthermore, when the cage is removed from the breeding rack, the two chains at the cage window hang down vertically due to their own weight, making the small animal feel that the square space at the cage window is narrow. Therefore, it is possible to prevent small animals in the cage from escaping when the cage is moved.

In the figure, 7 and 8 are opening/closing lid parts of the cage, 9 and 10 are stoppers for the lid, and 11 and 12 are insertion ports for reagent bottles to be administered to small animals in the cage during experiments.

[Functions and effects of invention]

As described above, in the mesh cage of the present invention, two chains or coiled wires are suspended from the cage water supply window into which the tip of the automatic water supply device is inserted, so that the automatic water supply device can be inserted into the cage window. When inserted into the holder, the two chains suspended there open left and right, and the insertion is not hindered in any way. Furthermore, when the automatic water dispenser is removed from the cage, the two suspended chains sag vertically under their own weight, reducing the size of the window opening. Therefore, small animals in the cage will feel that the squares of the window are small and will not escape through the window.

As described above, when the net cage for rearing of the present invention is placed in large numbers on a rearing rack equipped with an automatic water supply device, the two chains suspended from the water supply window of the cage are There is no problem in inserting the automatic water supply device by opening the left and right sides, and when removing the cage from the rearing shelf and moving it to the experimental bench, the two cage windows
The book chain hangs down under its own weight, making the small animals inside the case feel smaller and preventing the small animals from escaping. Combined with the simple structure, the net cage has a practical effect on small animal experiments. It is extremely large.

[Brief explanation of the drawing]

The drawing shows the water supply window of the rearing cage.
An example of a double mesh cage with a chain of books suspended therein is shown. 1, 2...Double mesh cage, 3, 4...Automatic water feeder insertion window of the cage, 5, 6...Two chains suspended from the window, 11, 12...For small animals in the cage Reagent bottle insertion port for administering reagents, etc.

Claims (1)

[Scope of utility model registration request] A net cage for raising small laboratory animals, characterized in that two chains or coiled wires are suspended from the window of the mesh cage into which the tip of an automatic water dispenser is inserted.