JP2019037697A - Quadruped retaining device - Google Patents

Abstract

To provide a quadruped retaining device of which a structure can be easily downsized.SOLUTION: A quadruped retaining device 100 comprises a head holder part 20 for fixing a head 81 of a quadruped 80, and a supporting part 40 for supporting forelimbs 85 and hindlimbs of the quadruped 80 with the head 81 fixed by the head holder 20. The supporting part 40 includes a forelimb supporting part (such as a plurality of rollers 41a) for supporting the forelimbs 85 of the quadruped 80, a hindlimb supporting part (such as a plurality of rollers 41b) for supporting the hindlimbs of the quadruped 80, and a holding part (such as a pair of roller holding members 42) for holding the forelimb supporting part and the hindlimb supporting part in an individually rotatable manner.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a quadruped animal retention device.

  There exists a thing of a nonpatent literature 1 as a mouse | mouth retention apparatus. The retaining device of Non-Patent Document 1 includes a ball that is spherically supported so as to be rotatable by air flow, and a fixing portion that fixes the head of the mouse riding on the ball, so that the mouse can freely run or walk. Then the ball will rotate.

  Patent Document 1 discloses a horizontally long cylindrical body into which a long-tailed small animal such as a mouse or a rat is inserted, and a dome-shaped net that captures the face of the small animal from the front side and regulates the movement of the small animal. A retaining device is provided.

JP2013-94629A

Takuwa H, Maeda J, Ikoma Y, Tokunaga M, Wakizaka H, Uchida S, et al., [11C] Raclopride binding in the striatum of minimally restrained and free-walking awake mice in a positron emission tomography study, Synapse (New York , NY) 2015; 69 (12), 600-606.

However, since the retaining device of Non-Patent Document 1 has a structure in which a mouse is placed on a spherical ball, the retaining device is large and space efficiency is poor.
For this reason, the retaining device of Non-Patent Document 1 is used for imaging by an MRI (Magnetic Resonance Imaging) device or a PET (Positron Emission Tomography) device in which the space of the opening in the device is narrow. It is difficult.

  The present invention has been made in view of the above problems, and provides a quadruped animal holding device having a structure that can be easily downsized.

According to the present invention, a head holder part for fixing the head of a quadruped animal,
A support part for supporting the forelimb and hindlimb of the quadruped animal in a state where the head is fixed by the head holder part;
With
The support part is
A forelimb support that supports the forelimb of the quadruped animal,
A hind limb support that supports the hind limbs of the quadruped animal,
A holding unit holding the front limb support unit and the hind limb support unit individually and rotatably;
A quadruped animal retention device is provided.

  According to the present invention, the quadruped animal retention device can be easily downsized.

It is a perspective view of the quadruped animal retention device concerning a 1st embodiment, and shows the state where a quadruped animal was retained. It is a perspective view of the quadruped animal retention device concerning a 1st embodiment, and shows the state where a quadruped animal was retained. It is a perspective view of the quadruped animal retention device concerning a 1st embodiment, and shows the state where a head fixing member was removed. It is principal part sectional drawing for demonstrating the fixing mechanism of the quadruped animal holding | maintenance apparatus which concerns on 1st Embodiment. It is a perspective view which shows the mouse | mouth with the head fixing member adhere | attached and fixed to the head. It is a top view which shows the state which discharges | releases a fluid from the fluid discharge part to the face part of a mouse | mouth. It is a perspective view which shows the state which installed the quadruped animal holding | maintenance apparatus which concerns on 1st Embodiment in the imaging device. It is a perspective view of the quadruped animal retention device concerning a 2nd embodiment. It is a top view of the quadruped animal retention device concerning a 2nd embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

[First Embodiment]
First, the quadruped animal retention device 100 according to the first embodiment will be described with reference to FIGS. 1 to 7.
In this specification, in the state where the quadruped animal 80 is held by the quadruped animal holding device 100, the head 81 side of the quadruped animal 80 is referred to as the front (front), and the trunk 84 side is referred to as the rear (rear).
Further, a direction that is horizontal and orthogonal to the front-rear direction is referred to as a width direction or a left-right direction.

As shown in any of FIGS. 1 to 3, the quadruped animal retention device 100 according to the present embodiment includes a head holder portion 20 that fixes a head portion 81 of a quadruped animal 80, and a head holder portion 20. And a support portion 40 that supports the forelimbs 85 (FIGS. 1 and 2) and the hindlimbs 86 (see FIG. 5) of the quadruped animal 80 in a state where 81 is fixed.
The support unit 40 includes a forelimb support unit (for example, a plurality of rollers 41a to be described later) that supports the forelimbs 85 of the quadruped animal 80 and a hindlimb support unit (for example, a plurality of to be described later) that supports the hindlimbs 86 of the quadruped animal 80. The roller 41b) and a holding portion (for example, a pair of roller holding members 42 described later) holding the front limb support portion and the hind limb support portion individually so as to be rotatable are configured.

  According to the present embodiment, the quadruped animal retention device 100 can be easily downsized. That is, since each of the forelimb support part and the hindlimb support part can be made compact as compared with a structure in which a quadruped animal rides on a single ball, the overall size of the quadruped animal holding apparatus 100 can be reduced.

The quadruped animal 80 is typically a rodent such as a mouse or a rat. However, the quadruped animal 80 may be another quadruped animal (typically a mammal) such as a dog or a cat.
With the quadruped animal retention device 100, the head 81 of the quadruped animal 80 can be fixed without anesthesia. Here, since a part other than the head 81 (such as limbs) in the quadruped animal 80 can be freely operated, the restraint stress of the quadruped animal 80 can be reduced.
In this specification, fixing the head 81 with the head holder part 20 and supporting the forelimbs 85 and hindlimbs 86 of the quadruped animal 80 with the support part 40 is said to hold the quadruped animal 80.
By holding the quadruped animal 80 with the quadruped animal holding device 100, various experiments and diagnoses are possible.
In a state where the quadruped animal 80 is held by the quadruped animal holding device 100, a good head image can be obtained by imaging the quadruped animal holding device 100 with various imaging devices. Examples of such an imaging apparatus include a small animal PET apparatus, a CT (Computed Tomography) apparatus, an MRI apparatus, an MRS (Nuclear Magnetic Resonance Spectroscopy) apparatus, and an optical imaging apparatus.
By fixing the head 81 with the head holder unit 20, it is possible to reduce the influence of vibration noise due to the spontaneous movement of the quadruped animal 80 when imaging is performed with the above-described imaging device. Even under the same S / N ratio can be obtained at rest and during exercise.

The quadruped animal holding device 100 includes, for example, a cylindrical casing unit 10 that houses at least a part of the trunk 84 of the quadruped animal 80 in a state where the head 81 is fixed by the head holder unit 20.
The housing unit 10 includes, for example, a housing lower component member 11 that configures a lower part of the housing unit 10 and a housing upper component member 15 that configures an upper part of the housing unit 10.

The casing lower component member 11 is formed, for example, in a semi-cylindrical shape that opens upward except for the rear portion of the casing lower component member 11. That is, the housing lower component member 11 is formed with a recess 12 having an opening 13 opened upward. The rear part of the casing lower component member 11 is, for example, a cylindrical part 14 formed in a cylindrical shape.
The housing upper component 15 is formed in a semi-cylindrical shape having an opening 16 (FIGS. 2 and 3) opened downward, for example.
By combining the casing lower component member 11 and the casing upper component member 15, a portion of the casing portion 10 ahead of the cylindrical portion 14 is formed in a cylindrical shape. At least a part of the trunk 84 of the quadruped animal 80 can be accommodated.

  In the case of the present embodiment, a notch shape portion 17 having a shape notched forward is formed in the upper portion of the rear portion of the casing upper component member 15, and the quadruped animal is formed via the notch shape portion 17. The rear part (saddle part) of 80 trunks 84 can be visually recognized. In addition, since the notch-shaped portion 17 is formed in the housing upper component 15, it is possible to reduce restraint stress on the quadruped animal 80 due to the housing portion 10.

In the case of the present embodiment, the head fixing plate 30 (head fixing member) shown in FIG. 5 is used to fix the head 81 of the quadruped animal 80 by the head holder unit 20.
The head fixing plate 30 includes, for example, a plate-like main body portion 31 that is long in one direction, a first rod-like portion 32 that protrudes from one end in the longitudinal direction of the main body portion 31, and the longitudinal direction of the main body portion 31. And a second rod-shaped portion 33 protruding from the other end to the other.
The first rod-like portion 32 and the second rod-like portion 33 are formed narrower than the main body portion 31.
As shown in FIG. 5, the main body 31 of the head fixing plate 30 is bonded and fixed to the head 81 of the quadruped animal 80 via a fixing agent 35 such as dental cement. More specifically, the head fixing plate 30 is bonded and fixed to the skull exposed from the top of the quadruped animal 80. At this time, the orientation of the head fixing plate 30 is set so that the first rod-shaped portion 32 faces the front of the quadruped animal 80 and the second rod-shaped portion 33 faces the rear of the quadruped animal 80.
For example, one or a plurality of hole portions 31 a are formed in the main body portion 31. By allowing the fixing agent to enter the hole 31a, the anchor effect of the fixing agent 35 with respect to the main body 31 is improved, and the head fixing plate 30 can be more stably fixed to the head 81.
The head fixing plate 30 is disposable for each quadruped animal 80.

The head holder portion 20 fixes the head portion 81 by holding at least two locations separated from each other in a head fixing member (head fixing plate 30) that is bonded and fixed to the head portion 81.
Thereby, since the head fixing plate 30 can be stably held by the head holder portion 20, it is possible to fix the head 81 more stably. Therefore, vibration noise applied to the head 81 during the spontaneous movement of the quadruped animal 80 can be greatly reduced.

More specifically, in the case of the present embodiment, the head holder portion 20 holds the front end portion and the rear end portion of the head fixing member (head fixing plate 30).
That is, the head holder portion 20 holds the first rod-like portion 32 and the second rod-like portion 33 of the head fixing plate 30, respectively.
Thereby, the direction of the face of the quadruped animal 80 can be suitably controlled in one direction, and the posture of the quadruped animal 80 can be made more constant.

More specifically, the head holder portion 20 includes a first portion 21 and a second portion 25 that can move back and forth relative to the first portion 21.
One of the first part 21 or the second part 25 is open toward the rear, and the front end (first rod-like part 32) of the head fixing member (head fixing plate 30) is inserted into the front part. A first insertion hole 22 for holding the portion.
The other of the first part 21 or the second part 25 is open toward the front, and the rear end part (second rod-like part 33) of the head fixing member is inserted to hold the rear end part. Two insertion holes 26 are provided.
In the case of this embodiment, the 1st part 21 is arrange | positioned among the 1st part 21 and the 2nd part 25 at the front side, and the 2nd part 25 is arrange | positioned at the back side. The first portion 21 has a first insertion hole 22, and the second portion 25 has a second insertion hole 26.
The first insertion hole 22 of the first portion 21 and the second insertion hole 26 of the second portion 25 are disposed to face each other in the front-rear direction.

In the case of the present embodiment, the quadruped animal retention device 100 has a support column 27 erected from the front end portion of the casing lower part constituting member 11 of the casing unit 10. The first portion 21 is formed in a rod shape, for example, and protrudes rearward from the upper end portion of the support column 27.
Further, the second portion 25 is formed in a rod shape, for example, and protrudes forward from the upper portion of the front end portion of the housing upper component 15 of the housing portion 10.
More specifically, for example, the first portion 21 is formed integrally with the lower case component 11, and the second portion 25 is formed integrally with the upper case component 15.
Here, the casing upper constituent member 15 is slidable back and forth relative to the casing lower constituent member 11. For this reason, as described above, the second portion 25 can be moved back and forth relative to the first portion 21.

When the head fixing plate 30 is held by the head holder unit 20, first, as shown in FIG. 3, the casing upper component member 15 is moved rearward relative to the casing lower component member 11. As a result, the facing distance between the first insertion hole 22 and the second insertion hole 26 is made larger than the longitudinal dimension of the head fixing plate 30 (the distance between the tip of the first rod-like portion 32 and the tip of the second rod-like portion 33).
Next, one of the first rod-like portion 32 or the second rod-like portion 33 is inserted into the first insertion hole 22 or the second insertion hole 26. That is, the first rod-like portion 32 is inserted into the first insertion hole 22, or the second rod-like portion 33 is inserted into the second insertion hole 26.
Next, the casing upper constituent member 15 is moved forward relative to the casing lower constituent member 11, and the other of the first rod-shaped portion 32 or the second rod-shaped portion 33 is moved to the first insertion hole 22 or the second. Insert into the insertion hole 26.

As shown in FIG. 3, the first portion 21 is formed with a fixing hole 23 into which a fixing screw 28 (FIGS. 1 and 2) is screwed. The axial direction of the fixing hole 23 intersects (for example, orthogonal) with respect to the axial direction of the first insertion hole 22. The fixing hole 23 communicates with the first insertion hole 22 inside the first portion 21.
When the fixing rod 28 is screwed into the fixing hole 23 in a state where the first rod-like portion 32 is inserted into the first insertion hole 22, the tip of the fixing screw 28 comes into contact with the first rod-like portion 32. ing. That is, in the state of FIGS. 1 and 2, the tip of the fixing screw 28 abuts against the side surface of the first rod-shaped portion 32. As a result, the dropout (detachment) of the first rod-like portion 32 from the first insertion hole 22 is restricted.

In the case of the present embodiment, the quadruped animal retention device 100 includes the first insertion hole 22 in which the front end portion (first rod-like portion 32) of the head fixing member (head fixing plate 30) is inserted, and the second insertion. A movement restricting mechanism (described below) that restricts relative movement of the second portion 25 with respect to the first portion 21 in a state where the rear end portion (second insertion hole 26) of the head fixing member is inserted into the hole 26. ing.
The movement restricting mechanism includes, for example, a long hole 18 formed in the casing upper component member 15, a female screw portion 42 a (see FIG. 4) formed in the roller holding member 42, and a female screw via the long hole 18. And a fixing screw 45 to be screwed into the portion 42a.
The long hole 18 is formed in the side part of the housing upper component 15 and extends in the front-rear direction. As shown in FIG. 4, a counterbore 19 is formed in the long hole 18.

  When the fixing screw 45 is screwed into the female screw portion 42 a, the head of the fixing screw 45 is pressed against the bottom portion of the countersink portion 19. As shown in FIG. 4, when the head of the fixing screw 45 is pressed against the bottom of the counterbore 19, the casing upper component 15 is restricted from moving back and forth with respect to the roller holding member 42. The As described above, since the roller holding member 42 is fixed to the casing lower component 11, the casing upper component 15 is restricted from moving back and forth with respect to the casing lower component 11. Further, as described above, the first portion 21 is provided integrally with the casing lower component member 11, and the second portion 25 is provided integrally with the casing upper component member 15. On the other hand, the second portion 25 is restricted from moving back and forth.

1 and 2, the front end face of the main body 31 is in contact with the rear end face of the first portion 21, and the main body portion is opposed to the front end face of the second portion 25. The rear end face of 31 is in contact.
This restricts the head fixing plate 30 from moving back and forth with respect to the head holder portion 20 (the first portion 21 and the second portion 25).

In the case of the present embodiment, each of the forelimb support part and the hindlimb support part is a roller 41 whose rotation axis extends horizontally and is arranged in parallel to each other.
That is, in the case of this embodiment, the support part 40 is a roller-type treadmill.

In more detail, the support part 40 is arrange | positioned at the front part of the support part 40, respectively, and the some roller 41a which comprises a front limb support part, respectively, and is arrange | positioned at the rear part of the support part 40, and each comprises a hind limb support part. And a plurality of rollers 41b.
Each roller 41 a is a roller 41, and each roller 41 b is also a roller 41.
Each roller 41 has a rotation axis extending in the left-right direction. These rollers 41 are arranged side by side at regular intervals. These rollers 41 are formed to have the same diameter, and are disposed at the same height position. However, the diameter of the roller 41b may be larger than the diameter of the roller 41a.
The gap between the adjacent rollers 41 is preferably smaller than the diameter of the rollers 41.

As an example, when the quadruped animal holding device 100 is a device that holds a small rodent such as a mouse, the outer diameter of each roller 41 can be about 1 cm. That is, the vertical dimension of the portion excluding the roller holding member 42 in the support portion 40 can be suppressed to about 1 cm.
On the other hand, in the case of a structure in which a mouse or the like is placed on the ball as in Non-Patent Document 1, the diameter of the ball is required to be about 10 cm, which is extremely large as compared with the quadruped animal holding device 100 according to the present embodiment.

  In the case of this embodiment, the longitudinal dimension (horizontal width dimension) of the roller 41b is larger than the longitudinal dimension (lateral width dimension) of the roller 41a. Thereby, while the longitudinal dimension of each roller 41a becomes a dimension according to the space | interval of a pair of right and left forelimbs 85, the longitudinal dimension of each roller 41b is the dimension corresponding to the space | interval of the pair of left and right hind limbs 86. It has become.

The support portion 40 includes a pair of left and right roller holding members 42 that hold both ends of each roller 41 so as to be rotatable around the axis of the roller 41.
The left roller holding member 42 extends in the front-rear direction at the left end in the recess 12 of the casing lower component 11.
The right roller holding member 42 extends in the front-rear direction at the right end in the recess 12 of the housing lower component 11.
Each roller holding member 42 is fixed to the casing lower component member 11.
The facing interval at the rear portion (portion holding the roller 41b) of the pair of roller holding members 42 is wider than the facing interval at the front portion (portion holding the roller 41a) of the pair of roller holding members 42.

Here, it is known that an awake state animal has a larger signal change on a brain image at the time of physical stimulation than an anesthesia state. For example, a physical stimulation is performed with a non-magnetic instrument inside the MRI apparatus to activate the cerebral somatosensory area of the quadruped animal 80, and by evaluating the signal change on the brain image at that time, the state under anesthesia It is possible to evaluate the brain function with high sensitivity.
Therefore, the quadruped animal retention device 100 further includes a fluid supply unit (described below) that supplies fluid to the face 82 of the quadruped animal 80 in a state where the head 81 is fixed by the head holder unit 20. Yes.
The fluid supplied to the face portion 82 is preferably a gas such as air. However, the fluid may be a liquid such as water.
In this embodiment, the fluid supply unit includes a compressor 53 that generates compressed air, and is configured to supply the compressed air generated by the compressor 53 to the face 82.
In addition to the compressor 53, the fluid supply unit includes, for example, a fluid supply pipe 51 and a flexible tube 52.
For example, the fluid supply pipe 51 is provided so as to penetrate the support column 27 in the front-rear direction, and protrudes rearward from the support column 27 below the first portion 21. The rear end of the fluid supply pipe 51 opens rearward. The front end portion of the fluid supply pipe 51 protrudes forward from the support column 27.
The flexible tube 52 connects the front end portion of the fluid supply pipe 51 and the compressor 53 to each other.
The compressed air generated by the compressor 53 is supplied to the fluid supply pipe 51 through the flexible tube 52 and blown backward from the opening at the rear end of the fluid supply pipe 51.

As shown in FIG. 2, the face part 82 of the quadruped animal 80 in a state where the head 81 is fixed by the head holder part 20 is positioned in the vicinity of the rear end of the rear end of the fluid supply pipe 51.
For this reason, the compressed air blown out from the fluid supply pipe 51 is blown to the face part 82 of the quadruped animal 80 (see FIG. 6). For this reason, the compressed air is also blown to the cheeks 83 of the quadruped animal 80. In addition, in FIG. 6, illustration of the head fixing plate 30 and the fixing agent 35 is omitted.

The fluid supply unit further includes a valve (not shown) for switching between a state where the compressed air generated by the compressor 53 is supplied to the fluid supply pipe 51 (hereinafter, open state) and a state where the compressed air is not supplied (hereinafter, closed state). Yes. For example, the operation of the valve is controlled by a control unit (not shown) in response to an operation on an operation unit (not shown).
When the operation unit is operated, the valve is opened and closed instantaneously, and compressed air is instantaneously supplied to the face unit 82 of the quadruped animal 80. Thereby, in particular, the brain of the quadruped animal 80 can be activated by applying stimulation by airflow to the cheek whiskers 83. By continuously performing this stimulation, a stronger stimulation can be given to the quadruped animal 80. Therefore, for example, activation of the cerebral somatosensory area of the quadruped animal 80 can be performed at an arbitrary timing and intensity in a narrow space inside the MRI apparatus.

FIG. 7 shows a state in which a plurality of (for example, two) quadruped animal holding devices 100 holding the quadruped animals 80 are installed in the opening 61 of one imaging device 60. The imaging device 60 is, for example, a small animal PET. The plurality of quadruped animal holding devices 100 are inserted into the opening 61 in a state of being placed on a common support base 63 placed on the support rail 62 of the quadruped animal holding device 100, for example. Can do.
Since the quadruped animal retention device 100 according to the present embodiment can be formed in a sufficiently small size, a plurality of quadruped animal retention devices 100 can be installed in the imaging device 60 at a time, and a plurality of quadruped animals. It is possible to perform 80 images at a time. Therefore, since imaging of a plurality of quadruped animals 80 can be performed under the same conditions, the reliability of the imaging result can be improved.

In addition, it is preferable that each part of the quadruped animal holding | maintenance apparatus 100 is black so that the imaging by an optical imaging apparatus can be performed suitably. Each part of the quadruped animal retaining device 100 may be painted black, or each part may be formed of a black material.
Each part of the quadruped animal retention device 100 is made of a resin such as polycarbonate, for example.

[Second Embodiment]
Next, the quadruped animal retention device 100 according to the second embodiment will be described with reference to FIGS. 8 and 9.
The quadruped animal retention device 100 according to the present embodiment is different from the quadruped animal retention device 100 according to the first embodiment described above in the points described below, and otherwise the first implementation described above. It is comprised similarly to the quadruped animal retention apparatus 100 which concerns on a form.

In the case of the present embodiment, the quadruped animal restraint device 100 uses a support wall 91 whose wall faces in the front-rear direction instead of the support column 27 (FIGS. 1 to 3) at the front end of the casing lower component 11. I have.
Further, the quadruped animal retention device 100 includes a plate-like support top plate 92 extending rearward from the upper end of the support wall 91, and the first portion 21 is formed integrally with the support top plate 92. Yes.

  In the case of this embodiment, the notch-shaped part 17 is not formed in the housing | casing upper structural member 15, and the buttocks of the quadruped animal 80 is covered with the housing | casing upper structural member 15 (refer FIG. 9). . Moreover, the housing | casing lower part structural member 11 does not have the cylindrical part 14 (FIGS. 1-3).

  In the case of this embodiment, the longitudinal dimension of the roller 41a and the longitudinal dimension of the roller 41b are equal to each other.

  As shown in FIG. 9, in the case of this embodiment, the second portion 25 also has a fixing hole 23, and the head fixing plate 30 is fixed by a fixing screw 28 screwed into the fixing hole 23 of the second portion 25. The second rod-shaped portion 33 is fixed to the second portion 25.

  In addition, although illustration is abbreviate | omitted, also in this embodiment, the quadruped animal holding | maintenance apparatus 100 may be provided with the flexible tube 52, the fluid supply pipe | tube 51, and the compressor 53. FIG.

  Although the embodiments have been described with reference to the drawings, these are examples of the present invention, and various configurations other than the above can also be adopted.

  For example, the support unit 40 includes a forelimb support belt (not shown) spanned by a plurality of rollers 41 a arranged at the front part of the support part 40 and a plurality of rollers 41 b arranged at the rear part of the support part 40. And a hind limb support belt (not shown) spanned over. In this case, the forelimb support belt supports the forelimb 85 of the quadruped animal 80, and the hindlimb support belt supports the hindlimb 86 of the quadruped animal 80. When the quadruped animal 80 runs or walks, the forelimb support belt rotates with the plurality of rollers 41a being rotated, and the hindlimb support belt rotates with the plurality of rollers 41b.

  Moreover, in the above, although the example in which the support part 40 is configured to include a plurality of rollers 41 has been described, the support part 40 includes a plurality of spheres, a bearing member that spherically supports each of these spheres, and It may be provided with. In this case, the plurality of spheres are arranged at the front part of the support part 40 and constitute the forelimb support part, and the plurality of spheres arranged at the rear part of the support part 40 and constitute the hindlimb support part. And are included. The bearing member can be formed in a flat plate shape and disposed horizontally, for example.

  In the above description, an example in which the quadruped animal retention device 100 includes a fluid supply unit (for example, the fluid supply tube 51, the flexible tube 52, and the compressor 53) has been described. The portion may not be provided.

  Further, the quadruped animal retention device 100 may be configured so that a tube for oral administration (hereinafter referred to as an oral administration tube) for the quadruped animal 80 retained by the quadruped animal retention device 100 can be installed. For example, a through hole for inserting the oral administration tube may be formed in the support column 27, the support wall 91, or the support top plate 92, or a clip capable of holding the oral administration tube may be provided.

This embodiment includes the following technical ideas.
<1> a head holder for fixing the head of a quadruped animal;
A support part for supporting the forelimb and hindlimb of the quadruped animal in a state where the head is fixed by the head holder part;
With
The support part is
A forelimb support that supports the forelimb of the quadruped animal,
A hind limb support that supports the hind limbs of the quadruped animal,
A holding unit holding the front limb support unit and the hind limb support unit individually and rotatably;
A quadruped animal retention device that is composed of.
<2> The quadruped animal restraint device according to <1>, wherein each of the forelimb support portion and the hindlimb support portion is a roller whose rotation axis extends horizontally and is disposed in parallel to each other.
<3> The head holder portion described in <1> or <2>, wherein the head holder portion fixes the head portion by holding at least two locations separated from each other in a head fixing member that is bonded and fixed to the head portion. Quadruped animal retention device.
<4> The quadruped animal retaining device according to <3>, wherein the head holder portion holds a front end portion and a rear end portion of the head fixing member.
<5> The head holder portion includes a first portion and a second portion that is movable back and forth relative to the first portion.
One of the first part or the second part has a first insertion hole that opens toward the rear and holds the front end part by inserting the front end part of the head fixing member.
The other of the first part or the second part has a second insertion hole that opens toward the front and holds the rear end part by inserting the rear end part of the head fixing member. <4> The quadruped animal retention apparatus according to <4>.
<6> In the state where the front end portion of the head fixing member is inserted into the first insertion hole and the rear end portion of the head fixing member is inserted into the second insertion hole, The quadruped animal retention device according to <5>, further including a movement restriction mechanism that regulates relative movement of the second part with respect to the part.
<7> Any one of <1> to <6>, further including a cylindrical housing portion that accommodates at least a part of the torso of the quadruped animal in which the head is fixed by the head holder portion. The quadruped animal retention device according to item.
<8> The four according to any one of <1> to <7>, further including a fluid supply unit that supplies a fluid to a face part of the quadruped animal in a state where the head is fixed by the head holder part. Foot animal retention device.

DESCRIPTION OF SYMBOLS 10 Housing | casing part 11 Housing | casing lower part structural member 12 Recess 13 Opening 14 Cylindrical part 15 Housing | casing upper structural member 16 Opening 17 Notch-shaped part 18 Long hole 19 Countersink part 20 Head holder part 21 1st part 22 1st insertion hole 23 fixing hole 25 second part 26 second insertion hole 27 support column 28 fixing screw 30 head fixing plate (head fixing member)
31 Main body 31a Hole 32 First rod-shaped portion 33 Second rod-shaped portion 35 Fixing agent 40 Support portion 41 Roller 41a Roller (forelimb support portion)
41b Roller (rear limb support part)
42 Roller holding member (holding part)
42a Female thread portion 45 Fixing screw 51 Fluid supply tube 52 Flexible tube 53 Compressor 60 Imaging device 61 Opening portion 62 Support rail 63 Support base 80 Quadruped animal 81 Head portion 82 Facial portion 83 Cheek beard 84 Body 85 Forelimb 86 Hindlimb 91 Support wall 92 Support top plate 100 Quadruped animal holding device

Claims (8)

A head holder for fixing the head of a quadruped animal,
A support part for supporting the forelimb and hindlimb of the quadruped animal in a state where the head is fixed by the head holder part;
With
The support part is
A forelimb support that supports the forelimb of the quadruped animal,
A hind limb support that supports the hind limbs of the quadruped animal,
A holding unit holding the front limb support unit and the hind limb support unit individually and rotatably;
A quadruped animal retention device that is composed of.   The quadruped animal holding device according to claim 1, wherein each of the forelimb support part and the hindlimb support part is a roller having a rotation axis extending horizontally and arranged in parallel to each other.   The quadruped animal retention according to claim 1 or 2, wherein the head holder portion fixes the head by holding at least two positions separated from each other in a head fixing member that is bonded and fixed to the head. apparatus.   The quadruped animal holding device according to claim 3, wherein the head holder portion holds a front end portion and a rear end portion of the head fixing member. The head holder portion includes a first portion and a second portion that is movable back and forth relative to the first portion.
One of the first part or the second part has a first insertion hole that opens toward the rear and holds the front end part by inserting the front end part of the head fixing member.
The other of the first part or the second part has a second insertion hole that opens toward the front and holds the rear end part by inserting the rear end part of the head fixing member. The quadruped animal retention device according to claim 4.   The front end portion of the head fixing member is inserted into the first insertion hole, and the rear end portion of the head fixing member is inserted into the second insertion hole. The quadruped animal retention device according to claim 5, further comprising a movement restriction mechanism that restricts relative movement of the second part.   The four according to any one of claims 1 to 6, further comprising a cylindrical housing portion that accommodates at least a part of the torso of the quadruped animal in a state where the head is fixed by the head holder portion. Foot animal retention device.   The quadruped animal holding device according to any one of claims 1 to 7, further comprising a fluid supply unit that supplies a fluid to a face part of the quadruped animal in a state where the head is fixed by the head holder unit.

Images