An experimental device for limiting coprophagy in rodents
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING FORESTRY UNIVERSITY
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-09
Smart Images
Figure CN224330115U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of animal experimental apparatus, and in particular to an experimental apparatus for restricting coprophagia in rodents. Background Technology
[0002] Coprophagia in rodents (such as mice and rats) can interfere with the accuracy of experimental results. For example, in gut microbiota studies, animals re-ingest the microbiota through coprophagia, leading to blurred differences between experimental and control groups. Current technologies primarily block coprophagia through chemical inhibitors (such as berberine) or surgery (such as anal suturing), but these methods have drawbacks such as drug side effects and complex procedures. Therefore, there is an urgent need for a safe, non-invasive physical restriction device. Utility Model Content
[0003] To better limit animals from eating cod during experiments, this application provides an experimental device for limiting cod-eating behavior in rodents.
[0004] This application provides an experimental device for restricting coprophagia in rodents, which adopts the following technical solution: An experimental device for restricting coprophagia in rodents includes a box and a retaining ring disposed on one side of the box. The retaining ring is detachably connected to the box. The lower side of the box has a collection cavity. A perforated plastic mesh is disposed inside the box and above the collection cavity. A slidable pull-out frame is disposed inside the box and below the collection cavity. The pull-out frame is used to receive animal excrement.
[0005] By adopting the above technical solution, during the experiment, the animal is placed in the box, and a collar is placed around the animal's neck to restrict the animal's head movement and prevent the animal from directly contacting its anus. At the same time, a plastic net is placed under the animal. When the animal defecates, the feces fall through the holes in the plastic net into the pull-out frame below under the influence of gravity, further preventing the animal from touching the feces and thus achieving the purpose of restriction.
[0006] Preferably, a collection box is provided on the side wall of the box body, and the retaining ring is placed inside the collection box.
[0007] Preferably, the lower side of the box body is provided with a slide rail for the pull-out frame to cooperate with, and at least one side of the box body is provided with a limiting block that abuts against the pull-out frame. The limiting block is used to limit the position of the pull-out frame in the slide rail.
[0008] Preferably, the inner side of the box has a support platform for supporting the periphery of the plastic mesh.
[0009] Preferably, the plastic mesh has connecting holes on its periphery, the support platform has connecting posts passing through the connecting holes, and the ends of the connecting posts have rubber protrusions.
[0010] Preferably, the retaining ring is separated along the generatrix direction to form a first connecting edge and a second connecting edge.
[0011] Preferably, the first connecting edge is provided with a plurality of buckles at intervals along the generatrix direction, and the second connecting edge is provided with a plurality of buckle holes for buckle connection in the circumferential direction.
[0012] Preferably, the side of the retaining ring with a smaller diameter has several vent holes.
[0013] In summary, this application includes at least one of the following beneficial technical effects: During the experiment, the animal is placed in the box, and a collar is placed around the animal's neck. The collar restricts the animal's head movement and prevents the animal from directly contacting its anus. Meanwhile, a plastic mesh is placed under the animal. When the animal defecates, the feces fall through the holes in the plastic mesh into the pull-out frame below under the influence of gravity, further preventing the animal from touching the feces and thus achieving the restriction purpose. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application;
[0015] Figure 2 This is a schematic diagram of the retaining ring structure in Embodiment 1 of this application;
[0016] Figure 3 This is a cross-sectional view of Embodiment 1 of this application;
[0017] Figure 4 This is a schematic diagram of the structure of Embodiment 1 of this application with the plastic mesh hidden;
[0018] Figure 5 yes Figure 3 An enlarged schematic diagram of part A in the middle;
[0019] Figure 6 yes Figure 4 Enlarged schematic diagram of part B in the middle;
[0020] Figure 7 This is a schematic diagram of the unfolded retaining ring in Embodiment 2 of this application.
[0021] Explanation of reference numerals in the attached drawings: 100, box body; 110, retaining ring; 111, collection box; 112, first connecting edge; 113, second connecting edge; 120, collection cavity; 121, plastic mesh; 122, pull-out frame; 123, support platform; 124, support frame; 125, connecting hole; 126, connecting post; 127, rubber protrusion; 130, slide rail; 131, limiting block; 132, receiving groove; 133, limiting spring; 134, protrusion; 140, buckle; 141, buckle hole; 142, vent hole. Detailed Implementation
[0022] The present application will be further described in detail below with reference to the accompanying drawings.
[0023] Example 1: Refer to Figure 1 Embodiment 1 of this application discloses an experimental device for restricting coprophagia in rodents, including a box 100 and a retaining ring 110 disposed on one side of the box 100, the retaining ring 110 being detachably connected to the box 100.
[0024] Reference Figure 1 , Figure 2 A collection box 111 is provided on one side of the box body 100, and a retaining ring 110 is placed inside the collection box 111. Multiple retaining rings 110 can be placed; one is used as an example in this embodiment. The retaining ring 110 is a cylindrical object with a smaller radius at one end for fitting around the animal's neck and a larger radius at the other end to fit the animal's head. The retaining ring 110 is separated along the generatrix to form a first connecting edge 112 and a second connecting edge 113. The retaining ring 110 can be expanded through the gap between the two for easy fitting. The retaining ring 110 is made of plastic or hard silicone. In this embodiment, the inner diameter of the smaller end is 2.5 cm (suitable for 20-25g mice), and the inner diameter of the larger end is 10 cm.
[0025] In other embodiments, the retaining ring 110 is connected to the first connecting edge 112 and the second connecting edge 113 by Velcro. By using different adhesive positions, the overall fit of the retaining ring 110 can be adjusted to accommodate different animal types.
[0026] Reference Figure 1 , Figure 3 The box body 100 has a collection cavity 120 on its lower side. A perforated plastic mesh 121 is provided inside the box body 100 and above the collection cavity 120. Simultaneously, a sliding pull-out frame 122 is provided inside the box body 100 and below the collection cavity 120. The pull-out frame 122 is used to collect animal excrement. A polytetrafluoroethylene film (not shown in the figure) is also laid at the bottom of the pull-out frame 122.
[0027] Reference Figure 3 , Figure 4 The inner side of the box body 100 has a support platform 123 for supporting the periphery of the plastic mesh 121. The support platform 123 is ring-shaped. In this embodiment, a support frame 124 is also provided in the middle part of the support platform 123. In this embodiment, the support frame 124 is cross-shaped. In other embodiments, in order to avoid the holes in the plastic mesh 121, the support frame 124 can also be set to a thinner shape and set on the lower side of the non-hole area of the plastic mesh 121, so that the feces will not be affected from falling from the holes while providing support.
[0028] Reference Figure 3 , Figure 5 The plastic mesh 121 has connecting holes 125 on its periphery. The support platform 123 has connecting posts 126 passing through the connecting holes 125, and the end of the connecting post 126 has a rubber protrusion 127. The diameter of the connecting post 126 is smaller than the diameter of the connecting hole 125, while the rubber protrusion 127 is generally shaped like a boss. The small end of the rubber protrusion 127 has a diameter smaller than the connecting hole 125, while the large end of the rubber protrusion 127 is slightly larger than the diameter of the connecting hole 125. When the plastic mesh 121 is fixed, the periphery of the plastic mesh 121 is pressed against the upper end of the rubber protrusion 127, causing the rubber protrusion 127 to deform and pass through the connecting hole 125. The lower end of the rubber protrusion 127 will then limit the plastic mesh 121. By replacing the plastic mesh 121, it is possible to adapt to different animal conditions, and damaged plastic mesh 121 can also be replaced, which is quite convenient.
[0029] Reference Figure 3 , Figure 4 , Figure 6 The lower side of the box body 100 is provided with a slide rail 130 for the pull-out frame 122 to cooperate with. At least one side of the box body 100 is provided with a limiting block 131 that abuts against the pull-out frame 122. The limiting block 131 is used to limit the position of the pull-out frame 122 in the slide rail 130. In this embodiment, the limiting block 131 is only provided on one side, which facilitates operation. The end of the pull-out frame 122 has a receiving groove 132 for the limiting block 131 to be inserted and abut against. The limiting block 131 is horizontally slidably disposed on the side wall of the box body 100. A part of the limiting block 131 is inserted into the receiving groove 132, and the other part is exposed on the outside of the box body 100. A limiting spring 133 is sleeved on the outside of the exposed part. A protrusion 134 is also provided at the end of the limiting block 131. One end of the limiting spring 133 is fixedly connected to the outer wall of the box body 100, and the other end is fixedly connected to the protrusion 134.
[0030] In its natural state, the limiting block 131 is inserted into the receiving groove 132, causing the limiting block 131 to abut against the bottom of the receiving groove 132, at which point the pull-out frame 122 cannot be removed. When it is necessary to remove the pull-out frame 122, the pulling protrusion 134 is pulled to make the limiting block 131 slide. At this time, the limiting spring 133 is stretched, and after the end of the limiting block 131 disengages from the receiving groove 132, the pull-out frame 122 can be removed along the slide 130.
[0031] Example 2: The difference from Example 1 is that, referring to... Figure 7 The first connecting edge 112 is provided with multiple buckles 140 at intervals along the generatrix direction, and the second connecting edge 113 is provided with multiple buckle holes 141 for connecting the buckles 140 in the circumferential direction. The cooperation between the buckles 140 and the buckle holes 141 can achieve multi-stage adjustment and is more secure. At the same time, in order to increase comfort, the side of the retaining ring 110 with the smaller diameter has several ventilation holes 142.
[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An experimental apparatus for restricting coprophagia in rodents, characterized in that: The device includes a box body (100) and a retaining ring (110) disposed on one side of the box body (100). The retaining ring (110) is detachably connected to the box body (100). The box body (100) has a collection cavity (120) on its lower side. A plastic mesh (121) with holes is disposed inside the box body (100) and above the collection cavity (120). A pull-out frame (122) is slidably disposed inside the box body (100) and below the collection cavity (120). The pull-out frame (122) is used to receive animal excrement.
2. The experimental apparatus for restricting coprophagia in rodents according to claim 1, characterized in that: The side wall of the box body (100) is provided with a collection box (111), and the retaining ring (110) is placed inside the collection box (111).
3. The experimental apparatus for restricting coprophagia in rodents according to claim 2, characterized in that: The lower side of the box body (100) is provided with a slide (130) for the pull-out frame (122) to cooperate with. At least one side of the box body (100) is provided with a limiting block (131) that abuts against the pull-out frame (122). The limiting block (131) is used to limit the position of the pull-out frame (122) in the slide (130).
4. The experimental apparatus for restricting coprophagia in rodents according to claim 3, characterized in that: The inner side of the box (100) has a support platform (123) for supporting the periphery of the plastic mesh (121).
5. An experimental apparatus for restricting coprophagia in rodents according to claim 4, characterized in that: The plastic mesh (121) has a connecting hole (125) on its periphery, and the support platform (123) has a connecting post (126) passing through the connecting hole (125), and the end of the connecting post (126) has a rubber protrusion (127).
6. The experimental apparatus for restricting coprophagia in rodents according to claim 5, characterized in that: The retaining ring (110) is separated along the generatrix direction to form a first connecting edge (112) and a second connecting edge (113).
7. An experimental apparatus for restricting coprophagia in rodents according to claim 6, characterized in that: The first connecting edge (112) is provided with a plurality of buckles (140) spaced apart along the busbar direction, and the second connecting edge (113) is provided with a plurality of buckle holes (141) for connecting the buckles (140) along the circumferential direction.