Mouse fixer
By designing a murine fixator including a restrictor and a stent, the problem of injury to the experimenter in the murine experiment was solved, safe fixation and effective drug injection of the rat were achieved, and the safety and efficiency of the experiment were improved.
Patent Information
- Application Number
- CN202323072054.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-14
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-11-14
AI Technical Summary
When conducting murine animal experiments, the experimenter needed to hold the rat with one hand and inject drugs with the other hand, causing the mouse attack to cause hand injuries.
A mouse fixator is designed, including a limiter and a stent, through which the angle of the limiter is adjusted, the limbs and head of the rat are fixed, and the injection hole is provided to facilitate safe injection of drugs and prevent rats from escaping and attacking.
It effectively avoids hand injuries to the experimenter, ensures that the mice maintain a fixed posture for a long time, facilitates drug injection, and improves the safety and efficiency of the experiment.
Smart Images
Figure CN222304092U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a rodent fixer. Background Art
[0002] Animal Experiment refers to scientific research conducted in the laboratory using animals in order to gain new knowledge about biology, medicine, etc. or to solve specific problems.
[0003] The ultimate goal of the development of experimental animal science is to study the life phenomena of animals themselves and then apply them to humans, explore the mysteries of human life, control human diseases and aging, and prolong human life. With the rapid development of medical biological science, it is recognized that the problem of pollution has not only become a major social problem of food, population, and the elderly, but also involves the survival of animals living on the earth, such as industrial pollution, food pollution, and drug toxicity, which directly affect human health. The research on these problems must eventually be clarified and solved through animal experiments (including the development of animal disease models, etc.). Therefore, the importance of experimental animal science, especially experimental animals, is increasingly recognized by people. It has been considered to be the pillar of human pursuit of a happy life, so experimental animal science is also called life science; for this reason, advanced countries have attached great importance to the development of experimental animal science, and the economic materials and technical forces invested in it are almost comparable to the development of atomic energy science. Its importance can be imagined. And it cannot be replaced by other methods at present.
[0004] During animal experiments using mice as samples, the experimenter needs to hold the mouse with one hand and inject the drug into the mouse with a syringe in the other hand. During this process, the mouse may attack the experimenter, causing injuries to the experimenter's hands.
[0005] The utility model aims at solving the above problems and provides a rodent fixer. Utility Model Content
[0006] In order to overcome the problems raised in the background technology, the utility model provides a rodent fixer.
[0007] A rodent fixator comprises a restrictor and a bracket, wherein adjusters are respectively arranged on both sides of the restrictor; one end of the adjuster is hinged to the restrictor, and the other end is hinged to the bracket; and one end of the bracket away from the adjuster is hinged to the restrictor.
[0008] Furthermore, the adjuster includes a first telescopic arm, a second telescopic arm and a limiting structure; the first telescopic arm is slidably connected to the second telescopic arm; and the limiting structure locks the positional relationship between the first telescopic arm and the second telescopic arm.
[0009] Furthermore, one end of the second telescopic arm is inserted into the interior of the first telescopic arm; and one end of the limiting structure is inserted into the interior of the first telescopic arm and contacts with the second telescopic arm.
[0010] Furthermore, the limiting structure is threadedly connected to the first telescopic arm.
[0011] Furthermore, one end of the first telescopic arm away from the second telescopic arm is hinged to the limiter; and one end of the second telescopic arm away from the first telescopic arm is hinged to the bracket.
[0012] Furthermore, an injection hole is arranged at the bottom of the restrictor.
[0013] Furthermore, a limiting hole is arranged around the injection hole.
[0014] Furthermore, a limiting groove matched with the limiter is arranged on the top of the bracket.
[0015] Furthermore, the restrictor is a regular tubular structure with one end contracted, and the contracted end is hinged to the bracket.
[0016] Furthermore, first rotation pairs are respectively provided on both sides of the limiter; and the first rotation pairs are hinged to the adjuster.
[0017] The use of the utility model:
[0018] 1. Make the rodent holder horizontal;
[0019] 2. Guide the rodent to drill into the restrainer through the opening;
[0020] 3. Put the rodent holder into a tilted state;
[0021] 4. Lock the state of the regulator to limit the mouse's posture;
[0022] 5. Insert the rodent's limbs into the restriction holes;
[0023] 6. Direct the injection hole toward the rat's auxiliary injection drug.
[0024] The beneficial effects of the utility model are as follows: the head of the mouse is restrained first, and then the drug is injected, which effectively avoids injuries to the hands of the experimenter; when the mouse enters the restrainer, the angle of the restrainer is adjusted to make the mouse's head tilt downward, preventing the mouse from escaping while exposing the mouse's abdomen, making it easier to inject drugs into the mouse's abdomen; the restrainer's tilt angle can be freely selected to allow the mouse to maintain a fixed posture for a longer period of time, making it easier to inject drugs. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a front view of a rodent fixer of the utility model when it is in a horizontal state;
[0026] Figure 2 It is a structural schematic diagram of a rodent fixer of the utility model when it is in a horizontal state;
[0027] Figure 3 It is a front view of a rodent fixer implementing the utility model when it is in a tilted state;
[0028] Figure 4 It is a structural schematic diagram of a rodent fixer implementing the utility model when it is in a tilted state;
[0029] Figure 5 A bottom view of a limiter for implementing the utility model;
[0030] Figure 6 It is a structural schematic diagram of a regulator for implementing the utility model;
[0031] Figure 7 This is a schematic diagram of the utility model for adjusting the angle of the limiter;
[0032] In the figure, 1. limiter; 2. bracket; 3. adjuster; 11. limiting hole; 12. injection hole; 13. first rotating pair; 14. second rotating pair; 21. first rotating bracket; 22. second rotating bracket; 23. limiting groove; 31. first telescopic arm; 32. second telescopic arm; 33. limiting structure; 311. third rotating bracket; 321. third rotating pair. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0036] like Figure 1-6 A rodent fixator shown includes a restrictor 1 and a bracket 2, with regulators 3 provided on both sides of the restrictor 1; one end of the regulator 3 is hinged to the restrictor 1, and the other end is hinged to the bracket 2; the end of the bracket 2 away from the regulator 3 is hinged to the restrictor 1.
[0037] Combination Figure 7 It can be seen that the utility model adjusts the inclination angle of the limiter 1 by extending the length of the adjuster 3. According to basic geometric knowledge, in a triangle, the larger the angle, the longer the side it faces, and vice versa. Therefore, when the side AC and the side AB remain unchanged, the longer the length of the side AB, the larger the angle of ∠CAB; the smaller the length of the side AB, the smaller the angle of ∠CAB. It can be inferred from this that the larger the length of the adjuster 3, the larger the inclination angle of the limiter 1; the smaller the length of the adjuster 3, the smaller the inclination angle of the limiter 1.
[0038] Specifically, the restrictor 1 is a regular tubular structure with one end contracted, and the contracted end is hinged to the bracket 2. When in use, the mouse is first lured to enter through the open end of the restrictor 1. As the mouse continues to enter, its head will eventually get stuck on the inner wall of the contracted end. Then, the regulator 3 is used to adjust the inclination angle of the restrictor 1, the abdomen of the mouse is exposed, and the drug is injected into the abdomen of the mouse, effectively avoiding injuries to the hands of the experimenter.
[0039] Furthermore, a second rotating pair 14 is disposed on the contraction end of the limiter 1 ; a first rotating bracket 21 is disposed on the bracket 2 , and the second rotating pair 14 is adapted to the first rotating bracket 21 .
[0040] When the head of the mouse is stuck on the inner wall of the contraction end, the angle of the restrictor 1 is adjusted to make the mouse's head tilt downward. At this time, the weight of the mouse will prevent it from pulling its head out of the contraction end, thereby preventing the mouse from escaping from the inside of the restrictor 1.
[0041] like Figure 1-6As shown, the regulator 3 includes a first telescopic arm 31, a second telescopic arm 32 and a limiting structure 33; the first telescopic arm 31 is slidably connected with the second telescopic arm 32; the limiting structure 33 locks the positional relationship between the first telescopic arm 31 and the second telescopic arm 32. The total length of the first telescopic arm 31 and the second telescopic arm 32 can be freely adjusted, and the positional relationship between the first telescopic arm 31 and the second telescopic arm 32 can be locked at any time, so that the tilt angle of the limiter 1 can be freely controlled, so that the mouse can maintain a fixed posture for a long time, which is convenient for injection.
[0042] Furthermore, one end of the second telescopic arm 32 is inserted into the first telescopic arm 31 , thereby limiting the motion trajectory of the second telescopic arm 32 . One end of the limiting structure 33 is inserted into the first telescopic arm 31 and contacts the second telescopic arm 32 .
[0043] Specifically, the limiting structure 33 is threadedly connected to the first telescopic arm 31. After the limiting structure 33 is tightened, the limiting structure 33 pushes the second telescopic arm 32 against the inner wall of the first telescopic arm 31, and the friction force is used to lock the positional relationship between the first telescopic arm 31 and the second telescopic arm 32, thereby locking the total length of the first telescopic arm 31 and the second telescopic arm 32.
[0044] Preferably, the limiting structure 33 is a bolt.
[0045] like Figure 4-6 As shown, a third rotating bracket 311 is provided at one end of the first telescopic arm 31 away from the second telescopic arm 32; first rotating pairs 13 are provided on both sides of the limiter 1; the first rotating pair 13 is hinged to the third rotating bracket 311. A third rotating pair 321 is provided at one end of the second telescopic arm 32 away from the first telescopic arm 31; a second rotating bracket 22 is provided on the bracket 2; the second rotating bracket 22 is hinged to the third rotating pair 321.
[0046] Specifically, an injection hole 12 is provided at the bottom of the restrainer 1. When the mouse is fixed inside the restrainer 1, its abdomen is exposed through the injection hole 12, and medicine can be injected into the abdomen of the mouse.
[0047] Furthermore, a limiting hole 11 is arranged around the injection hole 12. When the rodent is fixed inside the limiter 1, the rodent is lured to extend its four limbs through the limiting holes 11 respectively, thereby further preventing the rodent from escaping.
[0048] Specifically, a limiting groove 23 matched with the limiter 1 is provided at the top of the bracket 2 , and when the limiter 1 is in a horizontal state, the bottom of the limiter 1 enters into the limiting groove 23 .
[0049] In some embodiments of the present application, a protractor is provided for displaying the tilt angle of the limiter 1 , so that the operator can understand the current tilt angle of the limiter 1 .
[0050] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A rodent fixator, comprising a restrictor and a bracket, characterized in that: Regulators are respectively arranged on both sides of the limiter; one end of the regulator is hinged to the limiter, and the other end is hinged to the bracket; one end of the bracket away from the regulator is hinged to the limiter.
2. A rodent fixator according to claim 1, characterized in that: The regulator comprises a first telescopic arm, a second telescopic arm and a limiting structure; the first telescopic arm is slidably connected with the second telescopic arm; The limiting structure locks the positional relationship between the first telescopic arm and the second telescopic arm.
3. A rodent fixator according to claim 2, characterized in that: One end of the second telescopic arm is inserted into the interior of the first telescopic arm; one end of the limiting structure is inserted into the interior of the first telescopic arm and contacts the second telescopic arm.
4. A rodent fixator according to claim 3, characterized in that: The limiting structure is threadedly connected to the first telescopic arm.
5. The rodent retainer according to claim 3, characterized in that: One end of the first telescopic arm away from the second telescopic arm is hinged to the limiter; and one end of the second telescopic arm away from the first telescopic arm is hinged to the bracket.
6. A rodent fixator according to claim 2, characterized in that: An injection hole is arranged at the bottom of the restrictor.
7. A rodent retainer according to claim 6, characterized in that: A limiting hole is arranged around the injection hole.
8. The rodent retainer according to claim 2, characterized in that: The top of the bracket is provided with a limiting groove matched with the limiter.
9. A rodent fixator according to any one of claims 1 to 8, characterized in that: The restrictor is a regular tubular structure with one end contracted, and the contracted end is hinged to the support.
10. A rodent retainer according to claim 9, characterized in that: A first rotating pair is respectively provided on both sides of the limiter; the first rotating pair is hinged to the adjuster.