KR200270508Y1 - The lab animal isolation cage with the double filter - Google Patents

Abstract

The present invention relates to a cage for laboratory animal breeding with a double filter, the air supply valve is formed on one side of the box in the lower, the upper lid has a plurality of vent holes throughout the upper surface, The outer filter is mounted under the upper surface of the lid, and forms an exhaust space between the outer filter fixing frame and the inner filter fixing frame under the outer filter, the inner filter is mounted under the lid, and the filter fixing plate is attached to the lower surface of the lid. It is configured to form a lid, the exhaust port is connected to the exhaust space is provided on one side of the lid.

According to the present invention, the filter is provided with a double filter in the entire area of the lid of the cage to extend the life of the filter and to prevent the encroachment of experimental animals, double filter that can be used for both positive and negative pressure type by the double filter There is provided a cage for experiment animal breeding.

Description

Cage for experiment animal breeding with double filter {THE LAB ANIMAL ISOLATION CAGE WITH THE DOUBLE FILTER}

The present invention relates to a cage for experiment animal breeding having a double filter.

Experimental animals such as mice and rats are used for in vivo experiments, such as drug efficacy and toxicity. Experimental animals are reared in the cage while being fed with feed, water, and air at appropriate temperatures and aseptic conditions.

Conventional animal breeding cages have no filter in the exhaust portion, or the filter is provided with a very small cylindrical shape, there is a problem that contaminants accumulate in the exhaust pipe and the filter must be replaced frequently.

Another example of a conventional cage for experiment animal breeding is to install a filter on the upper part of the cage to discharge the contaminated air in the cage through the filter and then to the exhaust pipe connected to the outside, in this case inside the cage There was a problem that the positive pressure cage and the negative pressure cage should be provided separately because it cannot be used in clinical experiments requiring a lower pressure than the external pressure.

In order to solve the above problems, the present invention is provided with a filter over the entire surface of the cage lid to prevent smuggling and to use the filter for a long time.

Another object is to allow the air pressure in the cage to be used in the case of positive pressure higher than the external air pressure and in the case of negative pressure with low air pressure.

1 is an external perspective view of a cage for experiment animal breeding with a double filter of the present invention connected to a supply pipe and an exhaust pipe

Figure 2 is a cross-sectional view showing the flow of air at the positive pressure inside the cage

3 is a cross-sectional view showing the flow of air at the negative pressure inside the cage

4 is an exploded perspective view of a lid equipped with a double filter

Figure 5 is a laminated side view of the lid equipped with a double filter

＊ Explanation of symbols on main parts of drawing

10: lid 11a: outer filter fixing frame

11b: internal filter fixing frame 12: filter fixing plate

13a: external filter 13b: internal filter

14 exhaust port 16a fixing pin

6b: pinhole 17a: projection key

17b: keyhole 18: exhaust hole

19: exhaust space 20: feed container shelf

30: box 31: air supply valve

40: exhaust pipe 41: exhaust sleeve

50: supply pipe 51: supply sleeve

The present invention relates to a cage for experiment animal breeding equipped with a double filter.

Experimental animal breeding cage equipped with a double filter of the present invention, the air supply valve 31 is introduced into one side of the box 30 in the lower portion, the upper lid 10 is over the entire upper surface A plurality of exhaust holes 18 are opened, and an external filter 13a is mounted below the upper surface of the lid, and an exhaust space between the external filter fixing frame 11a and the internal filter fixing frame 11b under the external filter ( 19), the inner filter 14a is mounted thereon, and the filter fixing plate 12 is attached to the lower surface of the lid to form a lid, and the exhaust port 14 connected to the exhaust space 19 has one side of the lid. It is provided in the structure.

Hereinafter, described in detail by the accompanying drawings as follows.

Mounting the double filter on the lid is as follows (see Figure 4).

The keyhole 17b of the internal filter 13b is inserted into and seated on the plurality of protruding keys 17a in the filter fixing plate 12.

Then, the inner filter 13b is seated on the outer filter fixing frame 11a and the inner filter fixing frame 11b, which are coupled by a plurality of fixing pins 16a and pinholes 16b to form an exhaust space 19 at the center thereof. Fit into the filter fixing plate 12 and integrally combined.

Insert the keyhole 17b of the outer filter 13a into a plurality of projection keys (not shown) in the lid with the lid 10 turned upside down, and then seat the inner filter 13b and the outer filter fixing frame 11a and the inside. The filter fixing frame (11b) is coupled to the filter fixing plate 12 to be integrally formed in the lid 10 to be fixed.

In the case of a positive pressure higher than the air pressure inside the cage for experimental animal breeding having a double filter of the present invention configured as described above is as follows (see Fig. 2).

The air introduced into the box 30 through the air supply valve 31 is used for the breathing of the experimental animal, is contaminated, and then discharged into the exhaust space 19 while being purified by the internal filter 13b, and then the whole flowed in. 70 to 80% of the amount of air is discharged to the exhaust pipe 40 through the exhaust port 14, and 20 to 30% of air forming a difference between the internal air pressure and the external air pressure passes through the external filter 13a to be purified. It is discharged out of the cage through the vent hole on the top of the lid.

On the other hand, the case of the negative pressure of the air pressure inside the cage is lower than the air pressure outside the cage is as follows (see Fig. 3).

The air pressure of the air flowing into the air supply valve 31 is maintained at about 10 to 20% lower than the suction force of the exhaust port 14 so that the air pressure inside the cage is formed.

The air introduced into the box 30 through the air supply valve 31 is used for the breathing of the experimental animal, and is contaminated, and then discharged into the exhaust space 19 while being purified by the internal filter 13b and then the exhaust port 14. The air of the difference between the outside air pressure and the air pressure inside the cage is discharged through the exhaust pipe 40 through the exhaust space 19 after the air outside the cage is sucked through the external filter 13a. ) So that the sound pressure inside the cage is kept constant.

According to the present invention, a large-area filter is installed over the entire area of the cage for laboratory animal breeding to prevent smuggling and prolong the life of the filter. Two clinical trials are possible.

Claims (1)

In the cage for laboratory animal breeding, An air supply valve 31 is formed at one side of the box 30 in the lower air inlet, Lid 10 in the upper portion has a plurality of vent holes 18 are opened throughout the upper surface, The outer filter 13a is mounted below the upper surface of the lid, An exhaust space 19 is formed between the outer filter fixing frame 11a and the inner filter fixing frame 11b under the outer filter, Underneath is an internal filter 14a, The filter fixing plate 12 is attached to the lower surface of the lid to form a lid, Exhaust port 14 connected to the exhaust space 19 is provided provided on one side of the lid, Cage for breeding laboratory animals with a double filter.