JP2020199146A - Animal retention tool - Google Patents

Abstract

To provide an animal retention tool that makes it possible to retain an animal without putting stress on the animal and is easy to handle.SOLUTION: An animal retention tool 1 for retaining an animal put inside a bag comprises a bag body 10 that has an approximately trapezoidal bag-like shape in outward appearance, has an upper bottom side 101 and a lower bottom side 102 of the approximately trapezoidal shape that each are open, and has an inside dimension that decreases from a lower bottom side opening toward an upper bottom side opening, the bag body configured using canvas. The animal retention tool may further comprise a sewing thread containing aramid fibers with which at least one of a set of leg sides of the approximately trapezoidal shape of the bag body is sewn.SELECTED DRAWING: Figure 1

Description

The present invention relates to an animal retainer for retaining animals such as mice and rats.

When using a small animal such as a mouse or rat as a sample, it is necessary to retain the animal so that treatment such as injection can be easily performed. As such an animal retainer, Patent Documents 1 to 5 disclose a retainer in which a small animal is inserted from the head into a cylindrical cylinder to retain the animal.

For example, Patent Document 1 discloses a retainer in which a small animal such as a mouse can be easily inserted into a cylinder, and the tail is made difficult to move and can be easily injected into the tail. Further, Patent Document 2 describes an inner cylinder for accommodating a laboratory animal having a large number of holes in the peripheral wall portion and an outer cylinder for enclosing the inner cylinder having an aerosol blocking valve capable of exposing only the nose of the laboratory animal. A laboratory animal fixation device comprising the above is disclosed.

In Patent Document 3, the main body is firmly fixed to a part other than the limbs while the limbs to be measured and analyzed of the small animal are free, and the main body is set at a height at which the limbs of the small animal fixed to the main body do not touch the ground. An elevated small animal fixator with a supporting abutment is disclosed. Patent Document 4 discloses a measuring animal holder capable of administering an inhalation anesthetic while the animal being measured is being measured.

Further, Patent Document 5 discloses an animal fixing base having a semi-bell-shaped housing having a closed tip and the tip of the semi-bell-shaped housing being shielded from light.

As other forms of animal retainers, Patent Documents 6 to 9 disclose retainers for accommodating small animals in a bag-shaped body. For example, Patent Document 6 discloses a holding device including a metal lattice-shaped cylindrical body and a woven fabric member that surrounds the entire cylindrical body except for a part of the cylindrical body. Further, Patent Document 7 discloses a bag-shaped retaining device capable of accommodating a small animal such as a cat with its head exposed and opening and closing a portion along the back of the small animal. Patent Document 8 discloses a stationary fixture for small animals, which comprises a tubular body having at least an inner diameter gradually decreasing from one large-diameter opening toward the other small-diameter opening. Further, Patent Document 9 discloses a tubular animal retainer made of a woven or knitted material.

Japanese Unexamined Patent Publication No. 8-047502 Japanese Unexamined Patent Publication No. 8-131465 Japanese Unexamined Patent Publication No. 2004-147966 JP-A-2010-233649 Japanese Unexamined Patent Publication No. 2005-261460 Japanese Unexamined Patent Publication No. 4-071553 JP-A-2017-000574 JP-A-2009-034039 International Publication WO2014 / 014085

As described above, there are two types of animal retention tools: one in which a small animal is inserted and retained in a hard cylinder, and one in which a small animal is inserted and retained in a soft bag-shaped body. However, a retainer that inserts an animal into a hard cylinder from the head and presses and fixes the buttock side tends to give stress to the animal, and it may not be possible to calmly treat the animal. In addition, the mechanism for retention becomes complicated, and maintenance such as cleaning and disinfection after use is troublesome.

On the other hand, the soft bag-shaped one is less likely to give stress to the animal during retention. However, because it is soft, it cannot be sufficiently retained, and it is necessary to stop the animal with a fastener or belt while it is contained in the bag.

An object of the present invention is to provide an animal retainer that can be retained so as not to give stress to the animal and is easy to handle.

One aspect of the present invention is an animal holding tool for holding an animal in a bag, which is a bag shape having a substantially trapezoidal shape in appearance, and each of the upper bottom side and the lower bottom side of the substantially trapezoidal shape. The bag body is provided with a bag body that opens and the inner dimension gradually narrows from the opening on the lower bottom side toward the opening on the upper bottom side, and the bag body is made of canvas.

According to such a configuration, the bag body composed of canvas enables the animal to be accommodated without stress. In addition, the bag body made of canvas can withstand the heat during the sterilization process. In addition, by making the bag body made of canvas into a substantially trapezoidal bag shape in terms of appearance, it is possible to bend the excess part when the animal is housed and hold the bent part by the animal's own weight. Will be.

In the above animal retainer, the bag body is preferably made of cotton canvas of No. 3 or more and No. 7 or less. As a result, heat resistance and durability of cotton can be obtained, and appropriate softness of the bag body, easy bending property, and appropriate hardness (shape retention) can be obtained.

The animal retention section may further include a sewing thread containing aramid fibers for sewing at least one of a set of substantially trapezoidal leg sides in the bag body. As a result, a simple bag body can be constructed by cutting and sewing a single piece of canvas, and the heat resistance of the sewing thread can be obtained by containing the aramid fiber.

In the above animal retainer, the first leg, which is one of a set of substantially trapezoidal legs in the bag body, is provided in a mountain fold at substantially orthogonal to the upper and lower bases, and is one of the substantially trapezoidal legs in the bag body. The second leg, which is the other of the legs of the set, may be sewn with sewing thread. As a result, a simple bag body can be constructed by bending and sewing a piece of canvas.

In the above animal retainer, the bag body is configured so that the front and back surfaces of the bag overlap flatly when not in use, and when in use, the front and back surfaces of the bag are pressed by pressing the substantially trapezoidal first and second legs in each direction. It is preferable that the structure is such that the bag shape is formed. As a result, a plurality of animal retainers can be stacked when not in use. On the other hand, when using it, if it is pressed by hand, it becomes a bag shape and the animal can be easily accommodated.

According to the present invention, it is possible to provide an animal retainer that can be retained so as not to give stress to the animal and is easy to handle.

(A) and (b) are schematic diagrams illustrating the configuration of the animal retainer according to the present embodiment. (A) and (b) are schematic perspective views illustrating the configuration of the animal retainer according to the present embodiment. (A) and (b) are schematic views illustrating the method of using the animal retainer according to the present embodiment. (A) and (b) are schematic views illustrating the method of using the animal retainer according to the present embodiment. (A) to (c) are schematic views explaining another use example of the animal retention device which concerns on this embodiment. (A) to (c) are schematic views illustrating the method of manufacturing the animal retainer according to the present embodiment. (A) to (c) are schematic views illustrating the method of manufacturing the animal retainer according to the present embodiment. (A) and (b) are photographs illustrating the state of use by a rat model. (A) and (b) are photographs illustrating the state of use by a rat model.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same members are designated by the same reference numerals, and the description of the members once described will be omitted as appropriate.

(Composition of animal retainer)
1 (a) and 1 (b) are schematic views illustrating the configuration of an animal retainer according to the present embodiment. FIG. 1A shows a plan view of the animal retainer 1, and FIG. 1B shows an approximate size of the animal retainer 1.
2 (a) and 2 (b) are schematic perspective views illustrating the configuration of the animal retainer according to the present embodiment. FIG. 2A shows a perspective view seen from the front end side, and FIG. 2B shows a perspective view seen from the rear end side.

The animal holding tool 1 according to the present embodiment is a holding tool that holds and fixes an animal (small animal) such as a mouse or a rat as a sample in a bag. The animal retainer 1 includes a bag body 10 having a substantially trapezoidal bag shape in appearance. The bag body 10 is formed by stacking two substantially trapezoidal front surface pieces 11 and back surface pieces 12 to form a bag. The bag body 10 has an opening 101a and an opening 102a on the side of the upper base 101 and the side of the lower base 102 in a substantially trapezoidal shape, respectively. The inner dimensions of the bag body 10 gradually narrow from the opening 102a on the lower bottom 102 side to the opening 101a on the upper bottom 101 side.

In the animal retainer 1 according to the present embodiment, the bag body 10 is made of canvas (canvas fabric). Here, the canvas refers to a plain woven fabric that is densely woven by using thick-count twisted yarn or aligned yarn for the warp and weft. By using the canvas as the bag body 10, the bag body 10 can be provided with appropriate softness, easy bendability, and appropriate hardness (shape retention), and is easy to handle. Further, the bag body 10 can be provided with a light-shielding property by using a canvas. Due to such appropriate hardness (softness) and light-shielding property, the animal can be housed in the bag body 10 without giving stress and can be accurately retained.

Here, the canvas bag body 10 is preferably made of cotton canvas of No. 3 or more and No. 7 or less. The number of canvas is from 1 to 11 depending on the count of the yarn, the number of twists of the warp and weft, the density and weight of the warp and weft, the tensile strength in the warp and weft, and the elongation rate in the warp and weft. It has been decided. The standard based on this number was determined by the former JIS, and is still the standard used in the weaving industry.

In the present embodiment, it is preferable to use the cotton canvas of No. 3 or more and No. 7 or less in this standard as the bag main body 10. That is, if it is less than No. 3, the flexibility is poor, stress is likely to occur due to the pressure applied to the animal when the animal is housed, and the handleability of the user is lowered. On the other hand, if it exceeds No. 7, it is too soft to obtain sufficient retention when the animal is housed.

Further, by using a cotton canvas (canvas using cotton thread) as the bag body 10, it is possible to withstand the heat during the sterilization process. Examples of the sterilization treatment of the animal retainer 1 include high-pressure steam sterilization (autoclave), dry heat sterilization, and boiling sterilization. In high-pressure steam sterilization, treatment is performed under conditions such as 115 ° C. for 30 minutes and 134 ° C. for 10 minutes. Further, in dry heat sterilization, treatment is performed under conditions such as 135 ° C. to 145 ° C. for 3 hours to 5 hours, 180 ° C. to 200 ° C. for 0.5 hours to 1 hour, and the like. The temperature of boiling disinfection is 100 ° C. or lower.

The heat resistant temperature of the cotton yarn is 235 ° C., which decomposes and burns at about 275 ° C. to 456 ° C. Therefore, the heat resistant temperature of the cotton yarn is higher than the temperature of the above sterilization treatment. If cotton canvas is used as the bag body 10, it can sufficiently withstand heating by sterilization.

In the bag body 10, when two substantially trapezoidal front surface pieces 11 and back surface pieces 12 are stacked to form a bag, a pair of substantially trapezoidal legs (first leg 103 and second leg 104) side. At least one is sewn with the sewing thread 20. In the examples shown in FIGS. 1 and 2, the second leg portion 104 side is sewn with the sewing thread 20. The sewing thread 20 contains aramid fibers. The heat resistant temperature of the aramid fiber is about 370 ° C. Therefore, by sewing with the sewing thread 20 containing the aramid fiber, the sewing thread 20 does not melt even if it is heated by the above sterilization treatment.

The first leg 103, which is one of a set of substantially trapezoidal legs (first leg 103 and second leg 104) in the bag body 10, is substantially orthogonal to the upper bottom 101 and the lower bottom 102, and is second. The leg portion 104 is non-orthogonal to the upper base 101 and the lower base 102. In such a shape, the front surface piece 11 and the back surface piece 12 may be folded in a mountain on the first leg portion 103, and may be sewn on the side of the second leg portion 104 by the sewing thread 20. As a result, a simple bag body 10 can be constructed by bending and sewing a piece of canvas.

In the animal retainer 1 according to the present embodiment, the bag body 10 is configured such that the front and back surfaces (front surface piece 11 and back surface piece 12) of the bag are flatly overlapped when not in use. As a result, a plurality of animal retainers 1 can be stacked when not in use, and storage becomes easy. On the other hand, at the time of use, by pressing the substantially trapezoidal first leg portion 103 and the second leg portion 104 in each direction, the front and back sides of the bag expand to form a bag shape. As a result, when it is used, it can be easily made into a bag shape by pressing it by hand, and animals can be easily accommodated.

(Example of size)
The size of the animal retainer 1 according to the present embodiment is set according to the size of the animal to be accommodated. The size of the opening 101a on the upper bottom 101 side of the bag body 10 is such that the head of the animal to be housed does not come off (for example, the tip of the nose of the animal comes out). The size of the opening 102a on the lower bottom 102 side of the bag body 10 is about 2 to 2.5 times the body diameter of the animal to be accommodated. The length of the first leg 103 in the bag body 10 is about the same as the head and torso length of the animal to be accommodated.

As an example, the size of the animal retainer 1 for rats is as follows (see FIG. 1 (b)).
Here, the rat is assumed to have a head-to-body length of 20 to 25 cm and a tail length of 15 to 20 cm.
-Size L1 of the opening 101a in the bag body 10 ... Approximately 4 cm
-Size of opening 102a in the bag body 10 L2 ... Approximately 20 cm
-Length L3 of the first leg 103 in the bag body 10 ... Approximately 25 cm
-Length L4 of the second leg 104 in the bag body 10 ... Approximately 30 cm
-Angle formed by the first leg 103 and the second leg 104: Approximately 30 degrees or more and 35 degrees or less When targeting rats, the standard of cotton canvas in the bag body 10 is about 3 or more and 7 or less. Is preferable.

As another example, the size of the animal retainer 1 for mice is as follows.
Here, the mouse is assumed to have a head-to-body length of about 7 cm and a tail length of about 7 cm.
-Size L1 of the opening 101a in the bag body 10 ... Approximately 2 cm
-Size of opening 102a in the bag body 10 L2 ... Approximately 9 cm
-Length L3 of the first leg 103 in the bag body 10 ... Approximately 9 cm
-Length L4 of the second leg 104 in the bag body 10 ... Approximately 10 cm
-Angle formed by the first leg 103 and the second leg 104: Approximately 30 degrees or more and 40 degrees or less When targeting a mouse, the standard of cotton canvas in the bag body 10 is about 5 or more and 9 or less. Is preferable.

(how to use)
Next, a method of using the animal retainer 1 according to the present embodiment will be described.
3 (a) to 4 (b) are schematic views illustrating how to use the animal retainer according to the present embodiment.
In the animal retainer 1 according to the present embodiment, the bag body 10 is flat when not in use, and can be stacked and stored. At the time of use, as shown in FIG. 3A, the bag body 10 is held by hand and the first leg portion 103 and the second leg portion 104 are lightly pressed in each direction. As a result, the front surface piece 11 and the back surface piece 12 that have been overlapped and closed expand to form a bag shape, and the opening 102a on the lower bottom 102 side is opened. In the present embodiment, since the bag body 10 is made of canvas, it can be easily made into a bag shape by lightly grasping it with a hand due to an appropriate balance between the flexibility and tension of the fibers.

Then, with the bag body 10 expanded in a bag shape, the animal A is held by the other hand and put into the bag body 10 through the opening 102a. Since the bag body 10 has a light-shielding property and the inner dimension gradually narrows from the opening 102a to the opening 101a, the animal A prefers to proceed toward the upper bottom 101 side of the narrow and dark bag body 10. (See FIG. 3 (b)). In animal A, the tip of the nose may come out from the opening 101a, but it does not come out to the body. Further, the opening 101a on the upper bottom 101 side serves as a ventilation hole and does not interfere with the respiration of the animal A.

Next, as shown in FIG. 4A, with the animal A housed in the bag body 10, the remaining portion S on the second leg portion 104 side of the bag body 10 is bent. As a result, about half of the opening 102a on the lower bottom 102 side is folded back. As shown in FIG. 4B, the folded portion S is wound around the lower side of the animal A and placed on the table T. The folded portion S of the bag body 10 is pressed by the weight of the animal A.

That is, in the present embodiment, since the bag body 10 is made of canvas, when the remaining portion S of the bag body 10 is folded back and wound around the lower side of the animal A, even if the weight of the animal A is about the weight of the bag body, the canvases rub against each other. The folded part S does not return. That is, the state in which the animal A is wrapped by the bag body 10 can be maintained without fixing with a belt or a fastener. In this state, the animal A faces sideways and is retained on the table T.

Since the animal A is softly wrapped in the dark and narrow bag body 10, it is held sideways in a calm state without being stressed. The tail of animal A is in a state of extending outward from the opening 102a on the lower bottom 102 side. The experimenter can perform a predetermined procedure (eg, injection into the tail of animal A) on animal A, which is held calmly on the table T.

In particular, in the present embodiment, since the animal A can be held sideways, the tail veins proximal to the left and right sides of the tail of the animal A face upward. Therefore, it is possible for the experimenter to maintain a posture that facilitates injection into the tail vein of animal A. Further, since the tip of the nose of animal A can be seen from the opening 101a, oral administration can be performed from here.

In a structure such as the animal retainer 1 according to the present embodiment, which can be easily retained by simply folding back the remaining portion S of the bag body 10 without using another element such as a belt or fastener, the experimenter can perform a quick operation ( The retention can be completed by simply bending the surplus portion S). That is, when another element such as a belt or a fastener is used, it takes time to prepare it in advance or to fix it, but in the present embodiment, such time and effort is not required, and the retention can be completed easily and quickly. .. In addition, since the animal A is retained so as to be wrapped with a small amount of stimulation, the animal A is calm, and the experimenter can use both hands with peace of mind in the retained state. Although the animal retainer 1 of the present embodiment has a simple structure, it is a very effective tool for treating the animal A.

(Other usage examples)
Next, another use example of the animal retainer 1 according to the present embodiment will be described.
5 (a) to 5 (c) are schematic views illustrating another example of use of the animal retainer according to the present embodiment.
In this usage example, the synthetic resin bag B is inserted into the bag body 10 of the animal retainer 1, and the animal A is housed in the synthetic resin bag. That is, the animal retainer 1 according to the present embodiment is used as a cover for the bag B made of synthetic resin.

As shown in FIG. 5A, before accommodating the animal A, the synthetic resin bag B is placed in the bag body 10 of the animal retainer 1 according to the present embodiment. As a result, as shown in FIG. 5B, the animal retainer 1 and the synthetic resin bag B are integrated.

As shown in FIG. 5C, when the animal A is housed, the opening of the synthetic resin bag B is widened together with the opening 102a of the animal retainer 1. Animal A is housed in the bag through the opening of the bag B made of synthetic resin. By interpolating the bag B made of synthetic resin, the animal A is smoothly housed in the bag B.

Further, since the bag B made of synthetic resin is thin and the surface is slippery, it is difficult to bend and hold the bag B in the state where the animal A is housed. However, since the animal retainer 1 according to the present embodiment covers the bag B made of synthetic resin, the remaining portion of the bag body 10 is utilized by utilizing the hardness (shape retention) of the bag body 10 made of canvas. If S is folded back under the animal A and involved, the retained state can be maintained. Further, when the bag B made of synthetic resin has translucency, the animal A is not calm with the bag B alone. By covering the bag B with the animal retaining tool 1 according to the present embodiment, the bag B can be provided with a light-shielding property, and the animal A is calmly retained.

After the experiment is complete, animal A is removed. At this time, after taking out the animal A, the bag B made of synthetic resin may be pulled out, or the animal A may be pulled out together with the bag B. In the usage example using such a bag B, if only the used bag B is replaced, the animal retainer 1 does not need to be sterilized every time and can be reused.

(Production method)
Next, a method for manufacturing the animal retainer 1 according to the present embodiment will be described.
6 (a) to 7 (c) are schematic views illustrating a method for manufacturing an animal retainer according to the present embodiment.
First, as shown in FIG. 6A, a square canvas C is prepared. Next, as shown in FIG. 6B, the canvas C is folded in half. Next, as shown in FIG. 6C, the canvas C folded in half is cut diagonally.

When cut diagonally, as shown in FIG. 7A, one isosceles triangular canvas C1 and two right-angled triangular canvas C2 are taken out. After taking out the canvases C1 and C2, it is preferable to reinforce the edges of the canvases C1 and C2 by overlock stitching or the like.

Next, as shown in FIG. 7B, the isosceles triangular canvas C1 is folded in half, and the overlapping sides are sewn with the sewing thread 20. After that, the tip part is cut off. As a result, the animal retainer 1 is completed.

On the other hand, as shown in FIG. 7 (c), the two right-angled triangular canvases C2 are sewn on two sides with the sewing thread 20 in a superposed state. After that, the tip part is cut off. As a result, the animal retainer 1 is completed.

(Usage condition)
Next, the actual usage state of the animal retainer 1 according to the present embodiment will be described.
8 (a) to 9 (b) are photographs illustrating a usage state using a rat model.
As shown in FIG. 8A, the rat model R is a model for animal experiment technique training, and has the same size (body length, weight, waist circumference, tail length, etc.) and softness as an actual rat. .. In the usage examples shown in FIGS. 8 and 9, as shown in FIG. 5, a synthetic resin bag B is inserted into the bag body 10 of the animal retainer 1 of the present embodiment, and a rat model is inserted into the bag B. R is inserted.

As shown in FIG. 8B, the rat model R is inserted into the animal retainer 1 from the head, and the remaining portion S of the bag body 10 is folded back. The body portion of the rat model R is softly wrapped by the bag body 10 formed of canvas, and the tail Rt is in a state of extending outward from the opening 102a of the bag body 10. The bag body 10 made of canvas has a wide range of correspondence depending on the size of the animal.

As shown in FIGS. 9A and 9B, by placing the bag body 10 on the table T with the folded portion S facing down, the folded portion S can be pressed by the weight of the rat model R, and the rat can be pressed. The state in which the model R is wrapped in the bag body 10 can be maintained.

In the above, an example of use using the rat model R is shown, but experiments using actual rats are also being conducted. As a result, it was found that the rat can be inserted into the bag body 10 and the retained state can be maintained by its own weight with the folded portion S facing down. At the time of insertion, the rat can be easily inserted into the bag body 10 by the wide opening 102a, and the excess portion S can be easily bent by the flexibility of the canvas. By this bending, the opening 102a is closed to a size such that the rat's tail comes out, and the rat is gently wrapped in the bag body 10. The rat was held sideways in a calm state even when it was placed on the table T and both hands were released, and the experimenter was able to perform treatment such as injection using both hands on the tail extending from the opening 102a.

As described above, according to the present embodiment, it is possible to retain the animal A so as not to give stress, and it is possible to provide the animal retainer 1 that is easy to handle.

Although the present embodiment and its application examples have been described above, the present invention is not limited to these examples. For example, although a cotton canvas is used as the material of the bag body 10, a canvas other than the cotton canvas (hemp, flax, etc.) can also be applied. In addition to canvas, a cloth material that can withstand the heat of sterilization and disinfection may be used. Further, in the above embodiment, the animal retainer 1 provided with the sewing thread 20 for sewing the bag body 10 is shown, but the bag body 10 may be seamlessly configured without using the sewing thread 20. In addition, those skilled in the art appropriately adding, deleting, or changing the design of each of the above-described embodiments or application examples thereof, and those in which the features of each embodiment are appropriately combined are also included in the present invention. As long as it has a gist, it is included in the scope of the present invention.

The animal retention tool 1 according to the present invention can be suitably used for retaining other animals such as guinea pigs and rabbits in addition to mice and rats.

1 ... Animal retainer 10 ... Bag body 11 ... Front piece 12 ... Back piece 20 ... Sewing thread 101 ... Upper bottom 101a ... Opening 102 ... Lower bottom 102a ... Opening 103 ... First leg 104 ... Second leg A ... Animal B ... Bags C, C1, C2 ... Canvas R ... Rat model Rt ... Tail S ... Extra part T ... Table

Claims (5)

An animal retainer for holding animals in a bag.
It is a bag shape that is substantially trapezoidal in appearance, and each of the upper bottom side and the lower bottom side of the substantially trapezoid is opened, and the inner dimensions gradually increase from the opening on the lower bottom side toward the opening on the upper bottom side. Equipped with a narrowing bag body,
The bag body is an animal retainer made of canvas. The animal retainer according to claim 1, wherein the bag body is made of cotton canvas of No. 3 or more and No. 7 or less. The animal retainer according to claim 1 or 2, further comprising a sewing thread containing aramid fibers for sewing at least one of a set of substantially trapezoidal leg sides in the bag body. The first leg portion, which is one of a set of substantially trapezoidal legs in the bag body, is provided in a mountain fold so as to be substantially orthogonal to the upper base and the lower base.
The animal retainer according to claim 3, wherein the second leg portion, which is the other of the pair of substantially trapezoidal legs in the bag body, is sewn with the sewing thread. The bag body is configured so that the front and back pieces of the bag overlap flatly when not in use, and when in use, the front and back sides of the bag are pressed by pressing the substantially trapezoidal first leg and second leg in the direction of each other. The animal retainer according to any one of claims 1 to 4, wherein the animal retainer is configured to expand into a bag shape.