CN219184296U - Mouse skin experiment fixer - Google Patents

Abstract

The utility model discloses a mouse skin experiment fixer, which comprises a containing box and a piston type rear cover, wherein the containing box comprises a box body part and a box head part, the box body part extends along the front-back direction and is suitable for containing a body part of a mouse, and the rear end of the box body part is opened to form an opening; the box head is positioned at the front end of the box body and is suitable for accommodating the head of a mouse; the piston type rear cover is arranged in the opening and can slide along the front-rear direction so as to close the opening, and the position of the piston type rear cover in the front-rear direction can be adjusted; the top surface of box body is equipped with the back window that is used for revealing the mouse back, is equipped with at least one push-and-pull door on the back window, and the push-and-pull door is along fore-and-aft direction slidable to open or close the back window. According to the mouse skin experiment fixer disclosed by the utility model, the struggling amplitude of a mouse can be reduced, the direct contact between an experimenter and the mouse is reduced, the injury of the experimenter is avoided, the hair on the back of the mouse can be efficiently shaved under the condition of no anesthesia, the position of the mouse is kept stable, and good experiment operation conditions are provided.

Description

Mouse skin experiment fixer

Technical Field

The utility model relates to an experimental device, in particular to a mouse skin experimental fixer.

Background

Medical workers often trigger animal experiment research to discuss disease mechanism, and can apply to clinic only after obtaining enough theoretical basis through animal experiments. Animal experiments murine species are often selected as animal subjects. When various hair loss and wound models are built by mice, shaving is the first step of modeling preparation, the shaving part is generally the back, the body hair of the mice at the part to be tested is shaved cleanly, the part to be tested is better exposed, and the experimental part to be treated is marked, corresponding modeling treatment is carried out, experimental data are acquired, and the like. In the past, a good mouse fixing device is lacked in the shaving process of skin disease mice, and the mode is usually that one hand is used for fixing the tail of the mice directly, and the other hand is used for shaving the mice under the action of a shaver; or repeatedly short or continuous inhalation anesthetic administration to mice with an inhalation anesthetic such as isoflurane to shave and/or combine with removal Mao Yaogao; or to administer anesthesia to the abdominal cavity.

Drawbacks of the above method include: the mice are fixed by hands to shave for a long time, so that the risk of being bitten by the mice is greatly increased, and time and labor are wasted; repeated intermittent anesthesia of mice may cause excessive inhalation of anesthetic by the mice to die, and particularly for some mice with chronic skin diseases, the mice in pathological states need to be shaved and treated repeatedly, the mice become weaker, the risk of excessive anesthesia to die is greatly increased, the risk of death of the mice is aggravated, and the loss of data affects the reliability of experimental conclusion. Aiming at the situation, it is important to design a special mouse fixing device for shaving, wound surface, skin diseases and other modeling.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the utility model aims to provide a mouse skin experiment fixer.

To achieve the above object, a mouse skin test fixture according to an embodiment of the present utility model includes:

the accommodating box comprises a box body part and a box head part, wherein the box body part extends along the front-back direction and is suitable for accommodating a body part of a mouse, and the rear end of the box body part is opened to form an opening; the box head part is positioned at the front end of the box body part and is suitable for accommodating the head part of a mouse;

the piston type rear cover is arranged in the opening and can slide along the front-rear direction so as to close the opening, and the position of the piston type rear cover in the front-rear direction is adjustable;

the top surface of the box body is provided with a back window for exposing the back of the mouse, the back window is provided with at least one sliding door, and the sliding door can slide along the front-back direction so as to open or close the back window.

According to the mouse skin experiment fixer provided by the embodiment of the utility model, a mouse can be accommodated in the accommodating box, the proper size is regulated through the piston type rear cover, the mouse is limited, the back window is configured, and the sliding door is opened or closed, so that the struggling amplitude of the mouse can be reduced, the direct contact between an experimenter and the mouse is reduced, the experimenter is prevented from being injured, the back hair of the mouse can be efficiently shaved off under the condition of no anesthesia, the position of the mouse is kept stable, and good experiment operation conditions are provided.

In addition, the mouse skin test fixture according to the above embodiment of the present utility model may have the following additional technical features:

according to one embodiment of the utility model, the bottom surface of the box body is provided with an abdomen window for exposing the abdomen of the mouse, the abdomen window is provided with a roll-over door, and the roll-over door can rotate to open or close the abdomen window.

According to one embodiment of the utility model, a grabbing rod used for a mouse to grab is arranged at one end, adjacent to the box head, in the box body; the left side face and the right side face of the box body part are provided with anti-slip parts.

According to one embodiment of the utility model, the box head is provided with ventilation holes for the mice to breathe; two hind limb placing holes for extending the hind limb of the mouse are formed in the bottom face of the box body.

According to one embodiment of the utility model, the cartridge head comprises:

a hollow cylindrical portion, one end of which is connected with the front end of the box body portion;

the hollow cone head part is connected to the other end of the hollow cylindrical part;

the air holes are multiple, and the air holes are arranged on the hollow cylindrical part and/or the hollow cone head part.

According to one embodiment of the utility model, the number of the sliding doors is two, and the two sliding doors are arranged side by side in the front-rear direction.

According to one embodiment of the utility model, a moving rod is further arranged in the back window, and the moving rod is positioned between the two sliding doors and can slide along the front-back direction.

According to one embodiment of the utility model, two opposite side walls of the back window in the width direction of the box body are respectively provided with a sliding groove, and the sliding grooves penetrate through the box body along the length direction of the box body; the sliding door is inserted into the sliding groove along the length direction of the box body part and can slide in the sliding groove along the front-back direction.

According to one embodiment of the utility model, first bead screws are respectively arranged at two ends of the moving rod, the two ends of the moving rod are respectively slidably arranged in the two sliding grooves, and the first bead screws at the two ends of the moving rod are respectively elastically propped against the walls of the two sliding grooves.

According to one embodiment of the utility model, the rear end surface of the piston type rear cover is provided with a U-shaped opening for extending out the tail of the mouse;

the two opposite side surfaces of the piston type rear cover are respectively provided with a second wave bead screw, and the second wave bead screws elastically abut against the inner wall of the box body.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the structure of a first view angle of a mouse skin test fixture according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a second view of a mouse skin test fixture according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing the structure of a third view angle of a mouse skin test fixture according to an embodiment of the present utility model;

FIG. 4 is a schematic view showing the structure of a mouse skin test holder (with a sliding door opened) according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing the structure of a mouse skin test holder (with a piston-type rear cover opened) according to an embodiment of the present utility model;

fig. 6 is an exploded view of a mouse skin test holder according to an embodiment of the present utility model.

Reference numerals:

10. a storage box;

101. a box body part;

102. a cartridge head;

102a, a hollow cylindrical portion;

102b, a hollow cone head;

103. an anti-slip member;

h10, opening;

h11, back window;

h111, the chute;

h12 and ventilation holes;

h13, abdomen window;

h14, hindlimb placement holes;

11. a sliding door;

12. a moving rod;

121. the first wave bead screw;

13. a roll-over door;

14. a grab bar;

20. a piston type rear cover;

201. a second wave bead screw;

h20, U-shaped opening.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below are exemplary and intended to illustrate the present utility model and should not be construed as limiting the utility model, and all other embodiments, based on the embodiments of the present utility model, which may be obtained by persons of ordinary skill in the art without inventive effort, are within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The present utility model has been completed based on the following findings and studies:

medical workers often trigger animal experiment research to discuss disease mechanism, and can apply to clinic only after obtaining enough theoretical basis through animal experiments. In animal experiments, mice are often selected as animal experimental objects, and some experimental projects need to fix the mice to perform experimental steps, so that a mouse fixer is often adopted as experimental equipment for fixing the mice.

The inventor of the application carefully analyzes animal models commonly used by laboratory animals, and finds that the mouse holder is very popular in laboratory use and has a wide prospect, and can necessarily play an increasingly important role. On the one hand, the mouse fixer commonly used in the market only meets three functions of intraperitoneal injection, intramuscular injection and tail vein injection; meanwhile, the research on skin diseases and wound surfaces at home and abroad is large in quantity, but the research on the skin diseases and wound surfaces is not provided for the mouse fixer for repairing the skin diseases and the wound surfaces, and the research on the mouse fixer for repairing the skin diseases and the wound surfaces at home and abroad is very lack.

Existing mouse holders are mainly of two types: the four limbs and the trunk of the mouse are completely arranged in the container by the fixer, the function is single, and the body position deviation caused by the twisting and struggling of the mouse in the container can influence the experiment operation; the other type of fixer is used for respectively clamping and fixing the neck, the tail root and the trunk of the mouse, so that the mouse cannot struggle. Whichever is not possible with a mouse holder for hair or skin wound studies without anesthesia for back shaving.

In view of the above, there is a need for a novel mouse fixer that can simply and conveniently fix the limbs of a mouse, limit the struggling amplitude of the mouse, reduce the direct contact between an experimenter and the mouse, avoid the injury of the experimenter, and efficiently shave the hair on the back or the abdomen of the mouse without anesthesia, thereby keeping the position of the mouse stable and providing good operation conditions.

The utility model of the application is an improvement on the mouse fixer by the inventor, and the improvement is an effective guide on the development of the mouse fixer. The improvement scheme of the application analyzes the problems of the existing mouse fixer one by one, provides innovative suggestions from three aspects of operators, experimental animals and experimental purposes, improves the safety of operators on one hand, and designs an anti-skid part and a piston type rear cover; meanwhile, the grab bar is designed for improvement in consideration of reducing stress, pain and injury of the mice; on the other hand, two sliding doors are designed for exposing the back skin of the mice for the experimental purposes of shaving, skin diseases, wound repair and the like.

The proposal proposes the development of the mouse fixer from the viewpoint of animal ethics so as to promote the standardization, fairness and rationality of the development. The inventor is taken as a medical student, when an improvement scheme is given, the strict attitude of an animal ethics program is maintained, the interests of the animal are fully considered, the animal is well-known, the animal life is respected, the wild behavior aiming at the animal is prevented, and the animal is treated by adopting a method with least pain; improved suggestions and insights are made from the ethical standards and international practices that are in line with humans.

The following describes the mouse skin test fixture according to the embodiment of the present utility model in detail with reference to the accompanying drawings.

Referring to fig. 1 to 6, the mouse skin test fixture provided according to the embodiment of the present utility model includes a receiving box 10 and a piston type rear cover 20.

Specifically, the housing case 10 includes a case body part 101 and a case head part 102, the case body part 101 extending in the front-rear direction and adapted to house a body part of a mouse, the rear end of the case body part 101 being open to form an opening H10; the box head 102 is located at the front end of the box body 101 and is adapted to receive the head of a mouse. Illustratively, the box 101 may have a rectangular parallelepiped structure, which is convenient to be placed on a table top or the like stably, and is also convenient to hold. The cartridge head 102 may be of cylindrical configuration to facilitate insertion of a mouse's head therein.

The internal dimensions of the accommodating box 10 are adapted to the mice, specifically, the length dimension of the accommodating box 10 in the front-rear direction can be the largest dimension of the length dimension range of the test mice, and the accommodating box 10 can be adapted to mice of different dimensions by matching with the piston type rear cover 20, and the width dimension and the height dimension of the interior of the accommodating box 10 at least ensure that the mice cannot turn around inside, in other words, when the mice enter the accommodating box 10, the length direction of the mice is consistent with the length direction of the accommodating box 10, and the mice are just limited inside the accommodating box 10 and cannot turn around.

It should be noted that the accommodating box 10 is composed of a box body 101 and a box head 102, after a mouse enters the accommodating box 10, the mouse head enters the box head 102, and the box head 102 can be configured with a relatively smaller space size to limit the mouse head through the box head 102, so as to reduce struggling of the mouse.

A piston type rear cover 20 is provided in the opening H10 and is slidable in the front-rear direction to close the opening H10 and is adjustable in position in the front-rear direction. That is, the piston-type rear cover 20 can slide back and forth in the opening H10, and the length of the inner space of the box body 101 is adjusted by sliding the movable rear cover, so as to adapt to the size of the mouse, limit the mouse in the storage box 10, and keep the direction of the mouse consistent with the length direction of the storage box 10, thereby preventing the mouse from turning around and escaping. In addition, the piston-type rear cover 20 also facilitates opening the opening H10, thereby facilitating the entry of the mice into the housing box 10.

The top surface of box body is equipped with the back window H11 that is used for revealing the mouse back, be equipped with at least one push-and-pull door 11 on the back window H11, push-and-pull door 11 is followed fore-and-aft direction slidable is in order to open or close back window H11. When a mouse enters the accommodating box 10 and is limited by adjusting the piston type rear cover 20, the back of the mouse can be leaked out by opening the sliding door 11, so that the back of the mouse can be conveniently shaved and the like.

Preferably, the accommodating box 10 can be made of transparent material, such as transparent plastic, and the mouse can drill into the accommodating box 10 by itself without manually grabbing into the device by utilizing the drilling habit of the mouse, and the transparent material reduces fear of the mouse and is easy to drill into the accommodating box 10 by itself. In addition, the transparent housing case 10 is also convenient for observation in experiments.

According to the mouse skin experiment fixer provided by the embodiment of the utility model, a mouse can be accommodated in the accommodating box 10, the proper size is regulated through the piston type rear cover 20, the mouse is limited, the back window H11 is configured, and the sliding door 11 is used for opening or closing, so that the struggling amplitude of the mouse can be reduced, the direct contact between an experimenter and the mouse is reduced, the injury of the experimenter is avoided, the back hair of the mouse can be efficiently shaved off under the condition of no anesthesia, the stable position of the mouse is maintained, and good experiment operation conditions are provided.

Referring to fig. 3, in one embodiment of the present utility model, the bottom surface of the box portion 101 is provided with an abdomen window H13 for exposing the abdomen of the mouse, the abdomen window H13 is provided with a roll-over door 13, and the roll-over door 13 can be rotated to open or close the abdomen window H13.

In this embodiment, the abdomen window H13 is provided on the bottom surface of the box body 101, and the abdomen window H13 is opened or closed by the roll-over door 13, so that when the operations such as plucking, injecting, etc. need to be performed on the abdomen of the mouse, the roll-over door 13 can be opened to expose the abdomen area of the mouse, and the operations can be performed conveniently.

Referring to fig. 3, in one embodiment of the present utility model, a grip lever 14 for a mouse to grasp is provided in the case portion 101 adjacent to one end of the case head portion 102, and the grip lever 14 is disposed horizontally inside the case portion 101, for example. The left and right sides of the box body 101 are provided with anti-slip members 103, and the anti-slip members 103 may be anti-slip tapes, anti-slip stickers, or the like.

In this embodiment, on the one hand, on the basis of reducing stress on the mice, the mice can grasp the mice without forcedly grasping the accommodating box 10, and the mice can reduce tension by using drilling habits of the mice and the like to enter the accommodating box 10 and providing the grasping rod 14. On the other hand, by providing the anti-slip members 103 on the left and right sides of the case body 101, it is convenient for an experimenter to hold the accommodating case 10 while holding it, and it is not easy to slip off, thereby preventing the experimenter from being injured by the mouse due to slipping off of hands while holding the accommodating case 10.

Referring to fig. 2, in one embodiment of the present utility model, the ventilation holes H12 for ventilation of the mice are formed in the box head 102, and by forming the ventilation holes H12 in the box head 102, the ventilation of the mice in the storage box 10 is facilitated, and the tension of the mice is reduced while the ventilation is increased.

The bottom surface of box body portion 101 is equipped with two hindlimb placing holes H14 that are used for supplying the mouse hindlimb to stretch out, after the mouse gets into accepting box 10, can stretch out the hindlimb of mouse from this hindlimb placing hole H14, so, the mouse loses the support of hindlimb, can show the struggle of reduction mouse, is favorable to the operation of experiment.

Referring to fig. 1 to 6, in one embodiment of the present utility model, a cartridge head 102 includes a hollow cylindrical portion 102a and a hollow cone head portion 102b, one end of the hollow cylindrical portion 102a being connected to a front end of the cartridge body 101; a hollow cone head 102b is connected to the other end of the hollow cylindrical portion 102 a.

In this example, the box head 102 with the above structure has better adaptability to the head of a mouse, better restriction to the head of the mouse, and can maintain a more stable posture of the mouse.

Illustratively, the ventilation holes H12 are plural, and plural ventilation holes H12 are provided on the hollow cylindrical portion 102a and/or the hollow cone portion 102b, so that the ventilation holes H12 have a better ventilation effect.

Referring to fig. 1 to 2, in one embodiment of the present utility model, two sliding doors 11 are arranged side by side in the front-rear direction, and in use, an experimenter can open one of the sliding doors 11 according to the purpose of study, or simultaneously open two sliding doors 11, and close the two sliding doors 11 when not in use, so that the use is more convenient and flexible in the experimental process.

Preferably, the back window H11 is further provided with a moving rod 12, and the moving rod 12 is located between the two sliding doors 11 and is slidable along the front-rear direction, when the back window H11 is opened in use, the moving rod 12 can be moved to the middle of the opening area by sliding the moving rod 12, so that the mice can be limited to escape from the opening area, the opening range can be ensured to be large, the requirements are met, and the operation is convenient.

Referring to fig. 6, in one embodiment of the present utility model, two opposite side walls of the back window H11 in the width direction of the box portion 101 are respectively provided with a chute H111, and the chute H111 penetrates the box portion 101 along the length direction of the box portion 101; the sliding door 11 is inserted into the chute H111 along the longitudinal direction of the box body 101, and is slidable in the front-rear direction in the chute H111.

In this embodiment, the sliding door 11 is matched with the sliding grooves H111 on two side walls of the back window H11 through edges on two sides, so that it is ensured that the sliding door 11 can slide stably and reliably along the front-back direction, so that the back window H11 can be opened or closed conveniently, and the sliding operation is simple in structure and convenient.

Referring to fig. 6, in an embodiment of the present utility model, first bead screws 121 are respectively disposed at two ends of the moving rod 12, two ends of the moving rod 12 are respectively slidably disposed in two sliding grooves H111, and the first bead screws 121 at two ends of the moving rod 12 are respectively elastically abutted against walls of the two sliding grooves H111.

That is, the first bead screw 121 is disposed at two ends of the moving rod 12, and the bead end of the first bead screw 121 elastically abuts against the wall of the chute H111, so that the sliding smoothness is achieved, and meanwhile, when the moving rod slides to a desired position, the moving cover can be stably maintained at the current position by the elastic abutting action, so that the moving cover is more reliable to use.

Referring to fig. 1 to 6, in some embodiments of the present utility model, a rear end surface of the piston-type rear cover 20 is provided with a U-shaped opening H20 through which a tail of a mouse extends, and in use, the tail of the mouse may extend from the U-shaped opening H20, thereby facilitating operations such as tail vein injection and the like.

The opposite sides of the piston-type rear cover 20 are respectively provided with a second bead screw 201, and the second bead screw 201 elastically abuts against the inner wall of the box body 101. That is, the second bead screw 201 is provided on the side surface of the piston-type rear cover 20, and the bead end of the second bead screw 201 elastically abuts against the inner wall of the case 101, so that smoothness of sliding can be increased, and the piston-type rear cover 20 can be reliably maintained at a desired position.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A mouse skin test fixture, comprising:

the accommodating box comprises a box body part and a box head part, wherein the box body part extends along the front-back direction and is suitable for accommodating a body part of a mouse, and the rear end of the box body part is opened to form an opening; the box head part is positioned at the front end of the box body part and is suitable for accommodating the head part of a mouse;

the piston type rear cover is arranged in the opening and can slide along the front-rear direction so as to close the opening, and the position of the piston type rear cover in the front-rear direction is adjustable;

the top surface of the box body is provided with a back window for exposing the back of the mouse, the back window is provided with at least one sliding door, and the sliding door can slide along the front-back direction so as to open or close the back window.

2. The mouse skin test fixture of claim 1 wherein the bottom surface of the box portion is provided with an abdomen window for exposing the abdomen of the mouse, the abdomen window is provided with a roll-over door, and the roll-over door can rotate to open or close the abdomen window.

3. The mouse skin test fixator of claim 1 wherein the end of the box adjacent to the box head is provided with a gripping bar for the mouse to grip; the left side face and the right side face of the box body part are provided with anti-slip parts.

4. The mouse skin test fixator of claim 1 wherein the box head is provided with ventilation holes for ventilation of the mouse; two hind limb placing holes for extending the hind limb of the mouse are formed in the bottom face of the box body.

5. The mouse skin test anchor of claim 4 wherein the cartridge head comprises:

a hollow cylindrical portion, one end of which is connected with the front end of the box body portion;

the hollow cone head part is connected to the other end of the hollow cylindrical part;

the air holes are multiple, and the air holes are arranged on the hollow cylindrical part and/or the hollow cone head part.

6. The mouse skin test fixator of claim 4 wherein there are two sliding doors, the two sliding doors being arranged side by side in a front-to-rear direction.

7. The mouse skin test holder of claim 6 wherein a travel bar is further provided in the back window, the travel bar being located between the two sliding doors and being slidable in the fore-aft direction.

8. The mouse skin test holder of claim 7 wherein the opposite side walls of the back window in the width direction of the box portion are respectively provided with a chute, the chute penetrating through the box portion in the length direction of the box portion; the sliding door is inserted into the sliding groove along the length direction of the box body part and can slide in the sliding groove along the front-back direction.

9. The mouse skin test fixture of claim 8 wherein first beaded screws are respectively arranged at two ends of the moving rod, the two ends of the moving rod are respectively slidably arranged in the two sliding grooves, and the first beaded screws at two ends of the moving rod are respectively elastically abutted against walls of the two sliding grooves.

10. The mouse skin test fixator of claim 6 wherein the rear face of the piston rear cover has a U-shaped opening for the mouse tail to protrude;

the two opposite side surfaces of the piston type rear cover are respectively provided with a second wave bead screw, and the second wave bead screws elastically abut against the inner wall of the box body.

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