Medical experimental animal fixing device
By designing an adjustable animal restraint device, the restraint needs of animals of different sizes were addressed, achieving efficient and safe restraint operations and reducing experimental costs and stress responses.
Patent Information
- Application Number
- CN202511074511.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-01
- Publication Date
- 2025-10-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing animal restraint devices are not suitable for animals of different sizes, leading to frequent changes in restraint tubes, increasing experimental costs and reducing efficiency, and may also cause stress to the animals.
A fixing device including a mounting frame, a compression component, and a positioning component was designed. By sliding and adjusting the distance between the fixing plate and the movable plate, combined with the compression and positioning structure, adaptive fixing of animals of different sizes can be achieved. The operation accuracy and safety are improved by the indicator component and pressure sensor.
It enables rapid adjustment of the fixed space, reduces costs, improves operational convenience and efficiency, ensures fixation stability and safety, reduces animal stress response, and improves experimental accuracy.
Smart Images
Figure CN120859705A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical experimental equipment technology, specifically a fixation device for medical experimental animals. Background Technology
[0002] In the fields of medical research and drug development, animal medicine experiments play an irreplaceable role as an important research method. By utilizing animal models that are physiologically and genetically similar to humans, such as mice, rats, rabbits, dogs, and pigs, researchers can simulate the occurrence and development of human diseases and evaluate the efficacy and safety of drugs. This experimental method not only helps to reveal the pathogenesis of diseases but also provides valuable experimental evidence for new drug development. In animal medicine experiments, intravenous injection into experimental animals is a common procedure, especially when evaluating drug efficacy or monitoring physiological indicators. However, because experimental animals are often difficult to keep still during injection, specialized restraint devices are needed to ensure the accuracy and safety of the injection. Currently, although various animal restraint devices exist on the market, the methods for restraining experimental animals by targeting their tails for intravenous injection still have certain limitations.
[0003] Existing fixation methods often involve placing the experimental animal vertically inside a fixation tube, with the animal's tail protruding through an opening at the bottom of the tube for secure fixation. However, this method has a significant problem: the internal space of the fixation tube is fixed and cannot accommodate experimental animals of different sizes. When dealing with larger or smaller animals, it is often necessary to change to a different size fixation tube, which not only increases experimental costs but also reduces experimental efficiency. Furthermore, frequent changes to the fixation tube may cause unnecessary stress to the experimental animals, affecting the accuracy of the experimental results. Summary of the Invention
[0004] To address the problems in the prior art, this invention provides a medical experimental animal fixation device. To solve the aforementioned problems, this invention proposes a medical experimental animal fixation device that addresses the issue that the internal space of existing fixation tubes is fixed and cannot adapt to the needs of experimental animals of different sizes. When dealing with experimental animals of different sizes, it is often necessary to change to fixation tubes of different specifications, which not only increases experimental costs but also reduces experimental efficiency. Furthermore, frequent changes to fixation tubes may cause unnecessary stress to the experimental animals, affecting the accuracy of experimental results.
[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: a medical experimental animal fixation device, comprising a mounting frame, two compression components and two positioning components: a fixing plate is fixedly connected to the upper end of the mounting frame, a matching movable plate is provided on one side of the fixing plate, and arc-shaped opening slots are provided at the bottom of both the fixing plate and the movable plate, and compression components are connected to one side of each of the two opening slots via mounting blocks; slide rails are fixedly connected to both sides of the bottom of the fixing plate via fixing blocks, sliders are slidably connected to the outer sides of each of the two slide rails, and both sliders are fixedly connected to the bottom of the movable plate, and positioning components are provided at the bottom of each of the two slide rails; Both of the extrusion assemblies include a mounting cylinder, which is fixed to one side of a mounting block. A bolt is threaded onto the outer side of the mounting block. The bolt's shank end is inserted into the mounting cylinder and fixedly connected to a second piston. A first piston is provided on one side of the second piston. A second extrusion plate is fixedly connected to the side of the first piston away from the second piston via a fixing rod. A first extrusion plate is fixedly connected to one side of the second extrusion plate via a connecting rod. Both positioning components include a bracket with an elongated groove. Several positioning grooves are provided on both sides of the elongated groove. A pressing cylinder is movably inserted into the elongated groove. Positioning blocks are fixedly connected to both sides of the pressing cylinder. The two positioning blocks are movably inserted into their respective positioning grooves. A rod is fixedly connected to the inside of the pressing cylinder by a spring. The end of the rod away from the spring passes through a through-hole and is fixedly connected to one side of the bottom of the slider.
[0006] Specifically, one of the sliders is provided with an indicator component on one side. The indicator component includes a toothed disc, a rotating rod is fixedly sleeved at the center of the toothed disc, one end of the rotating rod is rotatably connected to one side of the slider, a rack is engaged on one side of the toothed disc, the rack is fixed to the bottom of the fixed plate, an indicator disc is movably sleeved on the outside of the rotating rod, the indicator disc is fixed to the outside of the movable plate, and an indicator needle is fixedly connected to the outside of the end of the rotating rod away from the slider.
[0007] Specifically, the pressing cylinder has side grooves on both sides of its side walls, and the bottom of the insert rod has side blocks that match the side grooves on both sides. The two side blocks are slidably connected to the two side grooves respectively.
[0008] Specifically, a guide block matching the guide groove is fixedly connected to the outside of the second extrusion plate, and the guide block is slidably connected to the guide groove.
[0009] Specifically, both the fixed plate and the movable plate are arc-shaped plates, forming a cylindrical shape, and rubber pads are fixedly connected to the inner walls of both the fixed plate and the movable plate.
[0010] Specifically, pressure sensors are embedded in the center of the inner walls of both the movable plate and the fixed plate.
[0011] Specifically, the movable plate is threaded with two lead screws on its outer side, and one end of each lead screw is fixedly connected to a stop block.
[0012] Specifically, both the first piston and the second piston are matched with the interior of the mounting cylinder, and an inner cavity is left between the first piston and the second piston.
[0013] The beneficial effects of this invention are: The beneficial effects of the medical experimental animal fixation device described in this invention; (1) Through the sliding adjustment mechanism between the fixed plate and the movable plate, the operator can quickly adjust the fixed space according to the specific size of the experimental animal, avoiding the trouble of frequent replacement of the traditional fixed tube due to its fixed size. This not only significantly reduces the experimental cost, but also greatly improves the convenience and efficiency of the experimental operation, making the experimental process smoother. Moreover, one adjustment can meet the fixation needs of different experimental animals, reducing the interference to the animals caused by the operation changes and effectively reducing the stress level of the animals. (2) The beneficial effects of the medical experimental animal fixation device of the present invention: The compression assembly can realize the smooth movement of the first compression plate and the second compression plate by rotating the bolt, ensuring that the pressure applied to the tail of the experimental animal is uniform and controllable. The positioning assembly ensures the stability of the fixed plate and the movable plate after adjustment by the precise cooperation of the pressing cylinder and the positioning groove. This not only simplifies the experimental operation process, but also significantly improves the safety of the experimental process and effectively protects the safety of the experimental personnel and experimental animals. (3) The beneficial effects of the medical experimental animal fixation device described in this invention: By cooperating with the indicator needle and the indicator plate, the relative positional relationship between the fixation plate and the movable plate can be displayed intuitively, so that the operator can quickly and accurately grasp the adjustment progress and degree when adjusting the fixation device, avoiding adjustment errors caused by visual errors or insufficient operating experience. This not only improves the accuracy of experimental operation, but also reduces the requirements for the skill level of the operator, making the experimental process easier to grasp and control. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 This is a schematic diagram of a medical experimental animal fixation device provided by the present invention; Figure 2 A schematic diagram of the bottom structure of the fixing plate and the movable plate of a medical experimental animal fixation device provided by the present invention; Figure 3 A schematic diagram of the indicator component structure of a medical experimental animal fixation device provided by the present invention; Figure 4A schematic diagram of the movable plate structure of a medical experimental animal fixation device provided by the present invention; Figure 5 A schematic diagram of the connection structure between the slide rail and the positioning component of a medical experimental animal fixation device provided by the present invention; Figure 6 A schematic diagram of the positioning component structure of a medical experimental animal fixation device provided by the present invention; Figure 7 A schematic diagram of the compression assembly structure of a medical experimental animal fixation device provided by the present invention; Figure 8 This is a cross-sectional view of the internal structure of the mounting cylinder of a medical experimental animal fixation device provided by the present invention.
[0016] In the diagram: 1. Mounting bracket; 2. Fixed plate; 3. Movable plate; 4. Abutment block; 5. Pressure sensor; 6. Opening slot; 7. Extrusion assembly; 71. First extrusion plate; 72. Connecting rod; 73. Second extrusion plate; 74. Fixed rod; 75. First piston; 76. Mounting cylinder; 77. Second piston; 78. Bolt; 79. Guide block; 710. Guide groove; 711. Inner cavity; 8. Positioning assembly; 81. Bracket; 82. Through port; 83. Insert rod; 84. Pressing cylinder; 85. Spring; 86. Positioning block; 87. Long groove; 88. Positioning groove; 89. Side block; 810. Side groove; 9. Indicator assembly; 91. Rack; 92. Indicator needle; 93. Gear plate; 94. Rotating rod; 95. Indicator disc; 10. Slide rail; 11. Lead screw; 12. Fixed block; 13. Mounting block; 14. Rubber pad; 15. Slider. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0018] like Figures 1-8 As shown, the present invention provides the following technical solution: Example 1: A medical experimental animal fixation device includes a mounting frame 1, two compression components 7, and two positioning components 8. A fixing plate 2 is fixedly connected to the upper end of the mounting frame 1. A matching movable plate 3 is provided on one side of the fixing plate 2. Both the fixing plate 2 and the movable plate 3 are arc-shaped plates, forming a cylindrical shape. Rubber pads 14 are fixedly connected to the inner walls of both the fixing plate 2 and the movable plate 3. Arc-shaped openings 6 are provided at the bottom of both the fixing plate 2 and the movable plate 3. Compression components 7 are connected to one side of each opening 6 via mounting blocks 13. The two mounting blocks 13 are fixedly connected to the fixing plate 2 and the movable plate 3 respectively. The bottom sides of the fixing plate 2 are fixedly connected to... The slide rail 10 is connected to two fixed blocks 12, which are fixedly connected to the fixed plate 2. Slider 15 is slidably connected to the outer side of each slide rail 10. The cross-section of each slide rail 10 is set in the shape of "I". The two sliders 15 are respectively matched with the two slide rails 10. Both sliders 15 are fixedly connected to the bottom of the movable plate 3. The bottom of each slide rail 10 is equipped with a positioning component 8. Through the sliding adjustment mechanism between the fixed plate 2 and the movable plate 3, the operator can quickly adjust the fixed space according to the specific size of the experimental animal, avoiding the trouble of frequent replacement of traditional fixed tubes due to fixed size. This not only significantly reduces the experimental cost, but also greatly improves the convenience and efficiency of experimental operation. Both extrusion assemblies 7 include mounting cylinders 76, which are fixed to one side of mounting block 13. Bolts 78 are threaded onto the outside of mounting block 13. The end of the bolt 78 is inserted into the mounting cylinder 76 and fixedly connected to a second piston 77. A first piston 75 is provided on one side of the second piston 77. Both the first piston 75 and the second piston 77 are matched with the inside of the mounting cylinder 76. An inner cavity 711 is left between the first piston 75 and the second piston 77. A second extrusion plate 73 is fixedly connected to the side of the first piston 75 away from the second piston 77 via a fixing rod 74. A guide block 79 matching the guide groove 710 is fixedly connected to the outside of the second extrusion plate 73. The guide block 79 is slidably connected to the guide groove 710. A first extrusion plate 71 is fixedly connected to one side of the second extrusion plate 73 via a connecting rod 72. The extrusion assembly 7 can achieve smooth movement of the first extrusion plate 71 and the second extrusion plate 73 by rotating the bolt 78, ensuring that the pressure applied to the tail of the experimental animal is uniform and controllable. Both positioning components 8 include a bracket 81, which has a long groove 87. Several positioning grooves 88 are provided on both sides of the long groove 87. A pressing cylinder 84 is movably inserted into the long groove 87. Positioning blocks 86 are fixedly connected to both sides of the pressing cylinder 84. The two positioning blocks 86 are movably inserted into their respective positioning grooves 88. An insert rod 83 is fixedly connected inside the pressing cylinder 84 via a spring 85. The end of the insert rod 83 away from the spring 85 passes through a through-hole 82 and is fixedly connected to one side of the bottom of the slider 15. The through-hole 82 is provided with… At the bottom of the slide rail 10, side grooves 810 are provided on both sides of the pressing cylinder 84. Side blocks 89 matching the side grooves 810 are fixedly connected to both sides of the bottom end of the insertion rod 83. The two side blocks 89 are slidably connected to the two side grooves 810 respectively. The positioning component 8 ensures the stability of the fixed plate 2 and the movable plate 3 after adjustment through the precise cooperation between the pressing cylinder 84 and the positioning groove 88. This not only simplifies the experimental operation process, but also significantly improves the safety of the experimental process and effectively protects the safety of the experimental personnel and experimental animals.
[0019] In use, first adjust the distance between the fixed plate 2 and the movable plate 3 according to the size of the experimental animal. Press the pressing cylinder 84. When the pressing cylinder 84 moves along the insertion rod 83, it will squeeze the internal spring 85. At the same time, the pressing cylinder 84 will also drive the positioning blocks 86 on both sides to move. When the positioning blocks 86 are completely separated from the positioning grooves 88 on the inner wall of the long groove 87, the pressing cylinder 84 can be pushed. The pressing cylinder 84 drives the movable plate 3 to move through the insertion rod 83 and the slider 15. The slider 15 slides along the slide rail 10 to adjust the distance between the movable plate 3 and the fixed plate 2, and quickly adjust the fixed space. This avoids the trouble of frequent replacement of the traditional fixed cylinder due to its fixed size. It not only significantly reduces the experimental cost, but also greatly improves the convenience and efficiency of the experimental operation. After the adjustment is completed, release the pressing cylinder 84. The pressing cylinder 84 moves in the opposite direction due to the rebound force of the spring 85. The positioning blocks 86 on both sides of the pressing cylinder 84 move. The 6th pin will be inserted into the two adjacent positioning slots 88, thereby limiting the position of the pressing cylinder 84 and the position of the movable plate 3. Then, the experimental animal is placed between the movable plate 3 and the fixed plate 2, and its tail extends out through the two opening slots 6. Then, the bolt 78 is rotated, and the bolt 78 pushes the second piston 77 to move in the mounting cylinder 76. When the second piston 77 moves, it will compress the air in the inner cavity 711. The first piston 75 will move under the action of air pressure. The inner cavity 711 between the first piston 75 and the second piston 77 can also play a certain role as an annular groove. The first piston 75 pushes the second compression plate 73 and the first compression plate 71 to move through the fixed rod 74. The two first compression plates 71 and the two second compression plates 73 clamp the experimental animal's tail, thereby ensuring the stability of the experimental animal's tail and facilitating the experimenter to perform intravenous injection on the experimental animal's tail.
[0020] Example 2: The technical solution of this example, which differs from that of Example 1, includes: one of the sliders 15 is provided with an indicator component 9 on one side. The indicator component 9 includes a toothed disc 93, with a rotating rod 94 fixedly sleeved at the center of the toothed disc 93. One end of the rotating rod 94 is rotatably connected to one side of the slider 15. A rack 91 is engaged on one side of the toothed disc 93 and is fixed to the bottom of the fixed plate 2. An indicator disc 95 is movably sleeved on the outside of the rotating rod 94 and is fixed to the outside of the movable plate 3. An indicator needle 92 is fixedly connected to the outside of the end of the rotating rod 94 away from the slider 15. Through the cooperation of the indicator needle 92 and the indicator disc 95, the relative positional relationship between the fixed plate 2 and the movable plate 3 can be displayed intuitively, so that the operator can quickly and accurately grasp the adjustment progress and degree when adjusting the fixing device, avoiding adjustment errors caused by visual errors or insufficient operating experience.
[0021] During use, the sliding block 15 will simultaneously drive the toothed disc 93 to move. Since the toothed disc 93 meshes with the rack 91, and the rack 91 is fixedly connected to the fixed plate 2, the position of the rack 91 remains unchanged. The toothed disc 93 is fixedly sleeved with the rotating rod 94, and one end of the rotating rod 94 is rotatably connected to the sliding block 15. Therefore, as the sliding block 15 drives the toothed disc 93 to move, the toothed disc 93 will rotate autonomously. The rotation of the toothed disc 93 will synchronously drive the indicator needle 92 to rotate through the rotating rod 94. The corresponding data on the indicator needle 92 and the indicator disc 95 can intuitively display the moving distance of the movable plate 3, and can more accurately adjust the distance between the fixed plate 2 and the movable plate 3, thereby adapting to experimental animals of different sizes.
[0022] Example 3: The technical solution of this example, which differs from that of Example 2, includes: two screw rods 11 are threadedly connected to the outside of the movable plate 3, and a stop block 4 is fixedly connected to one end of each screw rod 11. A pressure sensor 5 is also embedded in the center of the inner wall of the movable plate 3 and the fixed plate 2. The pressure sensor 5 is electrically connected to an external display. When the screw rod 11 is rotated, the screw rod 11 drives the stop block 4 to move. The stop block 4 squeezes the experimental animal, thereby further ensuring the stability of the experimental animal. During the fixation of the experimental animal, the pressure sensor 5 can also monitor the pressure applied to the experimental animal in real time, so that the experimenter can adjust the fixation force in a timely manner according to the specific reaction of the experimental animal and the experimental needs, ensuring the fixation effect while avoiding excessive pressure or injury to the experimental animal.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A fixation device for medical laboratory animals, characterized in that, Including mounting bracket (1); The mounting bracket (1) is equipped with a fixed plate (2) at its upper end. A movable plate (3) is provided on one side of the fixed plate (2). Both the fixed plate (2) and the movable plate (3) are provided with opening slots (6) at their bottoms. Both opening slots (6) are connected to a pressing component (7) via a mounting block (13) on one side. The bottom sides of the fixed plate (2) are fixed with slide rails (10) by fixing blocks (12). The two slide rails (10) are slidably connected with sliders (15) on the outside. The two sliders (15) are fixedly connected to the bottom of the movable plate (3). The bottom of the two slide rails (10) is provided with positioning components (8). Both of the extrusion assemblies (7) include a mounting cylinder (76), which is fixed to one side of the mounting block (13). The mounting block (13) is threaded with a bolt (78). The bolt (78) has its rod end inserted into the mounting cylinder (76) and a second piston (77) is fixed thereon. A first piston (75) is provided on one side of the second piston (77). A second extrusion plate (73) is fixed to the side of the first piston (75) away from the second piston (77) by a fixing rod (74). A first extrusion plate (71) is fixed to one side of the second extrusion plate (73) by a connecting rod (72). Both positioning components (8) include a bracket (81), the bracket (81) is provided with a long groove (87), and a number of positioning grooves (88) are provided on both sides of the long groove (87). A pressing cylinder (84) is movably inserted in the long groove (87), and a positioning block (86) is fixed on both sides of the pressing cylinder (84). Both positioning blocks (86) are movably inserted in the corresponding positioning grooves (88). A plug rod (83) is fixed in the pressing cylinder (84) by a spring (85). The end of the plug rod (83) away from the spring (85) passes through the opening (82) and is fixedly connected to the bottom of the slider (15).
2. The medical experimental animal fixation device according to claim 1, characterized in that: One of the sliders (15) is provided with an indicator component (9) on one side. The indicator component (9) includes a toothed disc (93). A rotating rod (94) is fixedly sleeved at the center of the toothed disc (93). One end of the rotating rod (94) is rotatably connected to one side of the slider (15). A rack (91) meshes with one side of the toothed disc (93). The rack (91) is fixed to the bottom of the fixed plate (2). An indicator disc (95) is movably sleeved on the outside of the rotating rod (94). The indicator disc (95) is fixed to the outside of the movable plate (3). An indicator needle (92) is fixedly connected to the outside of the end of the rotating rod (94) away from the slider (15).
3. The medical experimental animal fixation device according to claim 1, characterized in that: The pressing cylinder (84) has side grooves (810) on both sides of its side walls. The bottom ends of the insert rod (83) are fixedly connected to side blocks (89) that match the side grooves (810). The two side blocks (89) are slidably connected to the two side grooves (810) respectively.
4. The medical experimental animal fixation device according to claim 1, characterized in that: The mounting cylinder (76) is provided with a guide groove (710) on the outside, and a guide block (79) matching the guide groove (710) is fixedly connected to the outside of the second extrusion plate (73). The guide block (79) is slidably connected to the guide groove (710).
5. The medical experimental animal fixation device according to claim 1, characterized in that: Both the fixed plate (2) and the movable plate (3) are arc-shaped plates. The fixed plate (2) and the movable plate (3) form a cylindrical shape. Both the fixed plate (2) and the movable plate (3) have rubber pads (14) fixedly connected to their inner walls.
6. The medical experimental animal fixation device according to claim 1, characterized in that: Pressure sensors (5) are embedded in the center of the inner walls of both the movable plate (3) and the fixed plate (2).
7. The medical experimental animal fixation device according to claim 1, characterized in that: The movable plate (3) has two threaded screws (11) on its outer side, and one end of each screw (11) is fixedly connected to a stop block (4).
8. The medical experimental animal fixation device according to claim 1, characterized in that: The first piston (75) and the second piston (77) are both matched with the inside of the mounting cylinder (76), and an inner cavity (711) is left between the first piston (75) and the second piston (77).