Rodent cerebral ischemia modeling fixer

Abstract

The utility model belongs to the technical field of rodent fixers, and particularly relates to a rodent cerebral ischemia modeling fixator which comprises a fixing table, and an operating table is arranged at the top end of the fixing table. A rotating shaft is fixed at the lower end of the console; the rotating shaft extends to the inner side of the fixed table and is rotationally connected with the fixed table; an inserting assembly is arranged at the position, corresponding to the rotating shaft, of the inner side of the fixing table; fixing assemblies are arranged at the top end of the operation table. By means of the structural design of the fixing assembly, when a rodent needs to be fixed, the rodent can be placed between two clamping plates, then the clamping plates are moved through the driving assembly so that the rodent can be fixed, and then the neck and the head of the rodent are fixed separately; therefore, the stability of the animal in the experiment process is improved, meanwhile, the device can adapt to rodents of different body types, the success rate of the experiment is improved, and injury caused by struggling of the animal is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of rodent fixers, in particular to a rodent cerebral ischemia modeling fixer. Background Art

[0002] The cerebral ischemia modeling fixator is a device used to stably fix experimental animals (such as rats, mice and other rodents) during the preparation of cerebral ischemia models. The main function of this fixator is to ensure the stability of the head and neck of the animal during surgery or experiments, so that the experimenter can accurately and safely perform operations such as vascular exposure and suture insertion.

[0003] When preparing the cerebral ischemia model, commonly used fixators include head fixators, mouse plates, etc. These fixators can be used together with surgical instruments (such as ophthalmic scissors, artery clamps, etc.) to complete operations such as vascular exposure and suture insertion.

[0004] Most of the existing devices for fixing rodents can only fix the limbs and torso, and the fixation of the head and neck is not stable enough. It is difficult for experimenters to operate during cerebral ischemia modeling experiments. At the same time, the existing devices are fixed and cannot be adjusted at angles, which is not convenient for operation at different positions. Therefore, a rodent cerebral ischemia modeling fixator is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the utility model proposes a rodent cerebral ischemia modeling fixator.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: the rodent cerebral ischemia modeling fixer described in the utility model comprises a fixing platform, an operating platform is arranged at the top of the fixing platform; a rotating shaft is fixed at the lower end of the operating platform; the rotating shaft extends to the inner side of the fixing platform and is rotatably connected with the fixing platform; a plug-in component is arranged at a position corresponding to the rotating shaft on the inner side of the fixing platform; a fixing component is arranged at the top of the operating platform; the fixing component comprises two fixing blocks; the two fixing blocks are symmetrically fixed at the top positions of the operating platform respectively; a clamping plate is arranged on the inner side of the fixing block; the clamping plate is connected with the clamping plate through a driving component.

[0007] Preferably, the driving assembly includes a built-in threaded sleeve; the built-in threaded sleeve is laterally arranged at a position inside the fixed block; the built-in threaded sleeve is rotatably connected to the fixed block; the inner side of one end of the built-in threaded sleeve close to the clamping plate is threadedly connected with a driving screw; the driving screw is fixedly connected to the clamping plate; telescopic rods are fixed at both ends of the inner side of the fixed block; the telescopic end of the telescopic rod is fixedly connected to the clamping plate.

[0008] Preferably, one end of the built-in threaded sleeve away from the driving screw extends to the outside of the fixing block; and a first knob is fixed to one end of the driving screw located outside the built-in threaded sleeve.

[0009] Preferably, the fixing assembly also includes a pillow platform; the pillow platform is fixed at the top of the operating table and close to the fixing block; a neck splint is provided at the upper position of the pillow platform; an adjusting screw is vertically provided at one end of the neck splint; the adjusting screw is threadedly connected to the neck splint; the lower end of the adjusting screw is rotatably connected to the pillow platform; a second knob is fixed to the top of the adjusting screw; positioning rods are vertically provided at both ends of the neck splint; the positioning rods are slidably connected to the neck splint; and the positioning rods are fixedly connected to the pillow platform.

[0010] Preferably, rubber protective pads are fixed to the inner sides of the pillow platform and the neck splint; and a rubber head fixing belt is fixed to the top of the operating table and at one end close to the pillow platform.

[0011] Preferably, the plug-in assembly includes a plug-in ball; the plug-in ball is arranged at an inner position of a fixed platform; the plug-in ball is slidably connected to the fixed platform; a plurality of plug-in holes are evenly arranged at positions corresponding to the rotating shaft and the plug-in ball; the plug-in ball is plug-connected to the rotating shaft through the plug-in holes; a spring is fixed to one end of the plug-in ball away from the rotating shaft; and one end of the spring away from the plug-in ball is fixedly connected to the fixed platform.

[0012] Preferably, handrails are fixed on both sides of the top of the operating table.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model provides a rodent cerebral ischemia modeling fixator, which can effectively use the structural design of the fixing component so that when the rodent needs to be fixed, the animal can be placed between two clamping plates, and then the animal can be fixed by moving the clamping plates through the driving component, and then the neck and head of the animal are fixed respectively, which can ensure that the animal will not move at will, thereby improving the stability of the animal during the experiment. At the same time, it can adapt to rodents of different sizes, improve the success rate of the experiment, and avoid damage caused by the animal struggling.

[0015] 2. The utility model provides a rodent cerebral ischemia modeling fixator, which can effectively use the matching structure of the rotating shaft, the plug-in ball and the spring to make it possible to directly rotate the operating table when it is necessary to operate different positions of the animal during the experiment, thereby facilitating the adjustment of the horizontal angle of the animal. At the same time, the plug-in ball and the spring can limit the adjusted position, thereby preventing the rotating shaft from rotating at will, thereby improving the convenience and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the drive assembly in the utility model;

[0019] Figure 3 It is a three-dimensional diagram of the fixing assembly in the utility model;

[0020] Figure 4 It is a three-dimensional diagram of the plug-in assembly in the utility model;

[0021] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Fixed table; 2. Operating table; 3. Fixed block; 4. Clamping plate; 5. Pillow table; 6. Neck splint; 7. Rubber head fixing belt; 8. Built-in threaded sleeve; 9. Driving screw; 10. First knob; 11. Telescopic rod; 12. Adjusting screw; 13. Second knob; 14. Positioning rod; 15. Rubber protective pad; 16. Armrest; 17. Rotating shaft; 18. Plug hole; 19. Plug ball; 20. Spring. DETAILED DESCRIPTION

[0024] 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Specific examples are given below.

[0026] See also Figure 1-Figure 5The utility model provides a rodent cerebral ischemia modeling fixture, including a fixing platform 1, an operating platform 2 is arranged at the top of the fixing platform 1; a rotating shaft 17 is fixed to the lower end of the operating platform 2; the rotating shaft 17 extends to the inner side of the fixing platform 1 and is rotatably connected to the fixing platform 1; a plug-in component is arranged at a position corresponding to the rotating shaft 17 on the inner side of the fixing platform 1; a fixing component is arranged at the top of the operating platform 2; the fixing component includes two fixing blocks 3; the two fixing blocks 3 are symmetrically fixed at the top positions of the operating platform 2 respectively; a clamping plate 4 is arranged on the inner side of the fixing block 3; the clamping plate 4 is connected to the clamping plate 4 through a driving component. During operation, when conducting an experiment, the rodent is first placed between the two clamping plates 4, and then the two clamping plates 4 are moved toward each other by the driving assembly, so that the trunk of the rodent is limited and fixed by the movement of the two clamping plates 4, and then the neck and head of the animal are fixed by the fixing assembly to start the experiment. This step can be effectively implemented through the structural design of the fixing assembly, so that when the rodent needs to be fixed, the animal can be placed between the two clamping plates 4, and then the animal can be fixed by moving the clamping plates 4 by the driving assembly, and then the neck and head of the animal are fixed respectively, so as to ensure that the animal will not move at will, thereby improving the stability of the animal during the experiment, and at the same time being able to adapt to rodents of different sizes, improving the success rate of the experiment, and avoiding injuries caused by the animal's struggle;

[0027] Further, such as Figure 3 As shown, the driving assembly includes an internal threaded sleeve 8; the internal threaded sleeve 8 is transversely arranged at a position inside the fixed block 3; the internal threaded sleeve 8 is rotatably connected to the fixed block 3; the internal end of the internal threaded sleeve 8 close to the clamping plate 4 is threadedly connected with a driving screw 9; the driving screw 9 is fixedly connected to the clamping plate 4; telescopic rods 11 are fixed at both ends of the internal side of the fixed block 3; the telescopic end of the telescopic rod 11 is fixedly connected to the clamping plate 4. During operation, when the internal threaded sleeve 8 rotates, due to the rotation limiting effect of the two telescopic rods 11 on the clamping plate 4, the internal threaded sleeve 8 rotates and drives the clamping plate 4 to move away from the fixed block 3 through the driving screw 9 threadedly connected thereto, thereby fixing the animal. This step can effectively drive the clamping plate 4 by the rotation of the internal threaded sleeve 8, so that the internal threaded sleeve 8 rotates and drives the clamping plate 4 to move through the driving screw 9 threadedly connected thereto, thereby facilitating the driving of the clamping plate 4.

[0028] Further, such as Figure 3As shown, the end of the built-in threaded sleeve 8 away from the driving screw 9 extends to the outside of the fixing block 3; the end of the driving screw 9 located outside the built-in threaded sleeve 8 is fixed with a first knob 10. During operation, when the animal is placed inside the clamping plate 4, the first knob 10 is first turned to make the first knob 10 drive the built-in threaded sleeve 8 to rotate. This step facilitates the operator to manually fix the animal, so that the animal can be fixed according to the actual situation to avoid excessive force causing damage to the animal.

[0029] like Figure 3 As shown, the fixing assembly also includes a pillow platform 5; the pillow platform 5 is fixed at the top of the operating table 2 and close to the fixing block 3; a neck splint 6 is arranged above the pillow platform 5; an adjusting screw 12 is vertically arranged at one end of the neck splint 6; the adjusting screw 12 is threadedly connected to the neck splint 6; the lower end of the adjusting screw 12 is rotatably connected to the pillow platform 5; a second knob 13 is fixed to the top of the adjusting screw 12; positioning rods 14 are vertically arranged at both ends of the neck splint 6; the positioning rod 14 is slidably connected to the neck splint 6; the positioning rod 14 is fixedly connected to the pillow platform 5. During operation, after the animal's torso is fixed, the animal's head is passed between the neck splint 6 and the pillow 5 so that the animal's neck is located between the neck splint 6 and the pillow 5. Then, the second knob 13 is turned to drive the adjusting screw 12 to rotate. When the adjusting screw 12 rotates, it drives the neck splint 6 meshing with it to move downward, thereby fixing the animal's neck by reducing the distance between the neck splint 6 and the pillow 5. This step can effectively fix the animal's neck by rotating the adjusting screw 12, so that the adjusting screw 12 drives the neck splint 6 to move, thereby improving the stability of the fixation.

[0030] like Figure 3 As shown, the inner sides of the pillow 5 and the neck splint 6 are both fixed with rubber protective pads 15; a rubber head fixing belt 7 is fixed at the top of the operating table 2 and at one end near the pillow 5. During operation, when it is necessary to fix the head of the animal, it can be seen that the head of the animal is placed between the rubber head fixing belt 7 and the operating table 2, and then the head of the animal can be fixed by the elasticity of the rubber head fixing belt 7 itself, and at the same time, the soft elastic material of the rubber protective pad 15 and the rubber head fixing belt 7 itself can reduce the damage to the animal's body. This step can effectively fix the head of the animal through the rubber head fixing belt 7, and at the same time, the material properties of the rubber protective pad 15 and the rubber head fixing belt 7 themselves can reduce the damage to the animal's body.

[0031] like Figure 4As shown, the plug-in assembly includes a plug-in ball 19; the plug-in ball 19 is arranged at the inner side of the fixed platform 1; the plug-in ball 19 is slidably connected to the fixed platform 1; a plurality of plug-in holes 18 are evenly opened at the positions corresponding to the rotating shaft 17 and the plug-in ball 19; the plug-in ball 19 is plug-connected to the rotating shaft 17 through the plug-in holes 18; a spring 20 is fixed to the end of the plug-in ball 19 away from the rotating shaft 17; and the end of the spring 20 away from the plug-in ball 19 is fixedly connected to the fixed platform 1. During operation, when the angle adjustment is required, the operating table 2 is first rotated to drive the rotating shaft 17 to rotate. When the rotating shaft 17 rotates, the plug-in ball 19 is squeezed, so that the plug-in ball 19 moves in the direction close to the spring 20, so that the plug-in ball 19 cancels the limit on the rotating shaft 17, so that the rotating shaft 17 can rotate. When the rotating shaft 17 rotates to a position corresponding to one of the plug-in holes 18 and the plug-in ball 19, the plug-in ball 19 is pushed to the inside of the plug-in hole 18 under the elastic action of the spring 20, so that the rotating shaft 17 can be limited to prevent the rotating shaft 17 from rotating subsequently, and the angle adjustment can be completed. This step can effectively use the matching structure of the rotating shaft 17, the plug-in ball 19 and the spring 20, so that when it is necessary to operate different positions of the animal during the experiment, the operating table 2 can be directly rotated, so as to facilitate the adjustment of the horizontal angle of the animal. At the same time, the adjusted position can be limited by the plug-in ball 19 and the spring 20, so as to prevent the rotating shaft 17 from rotating at will, thereby improving the convenience and stability of the device.

[0032] like Figure 5 As shown, armrests 16 are fixed on both sides of the top of the operating table 2. During operation, when the angle needs to be adjusted, the operator can rotate the adjusting screw 12 by holding the armrests 16, which can effectively improve the convenience of the operator when rotating the adjusting screw 12.

[0033] Working principle: When conducting an experiment, first place the rodent between the two clamping plates 4, then use the driving assembly to move the two clamping plates 4 in a direction close to each other, so that the trunk of the rodent is limited and fixed by the movement of the two clamping plates 4, and then the neck and head of the animal are fixed by the fixing assembly to start the experiment; when the built-in threaded sleeve 8 rotates, the two telescopic rods 11 limit the rotation of the clamping plate 4, so that the built-in threaded sleeve 8 rotates and drives the clamping plate 4 through the driving screw 9 threadedly connected thereto. The holding plate 4 moves in a direction away from the fixing block 3, so that the animal can be fixed; when the animal is placed inside the clamping plate 4, the first knob 10 is first turned so that the first knob 10 drives the built-in threaded sleeve 8 to rotate; after the animal's trunk is fixed, the animal's head is passed between the neck splint 6 and the pillow 5 so that the animal's neck is located between the neck splint 6 and the pillow 5, and then the second knob 13 is turned so that the second knob 13 drives the adjusting screw 12 to rotate, and when the adjusting screw 12 rotates, it drives the neck meshed with it. The splint 6 moves downward, thereby fixing the neck of the animal by reducing the distance between the neck splint 6 and the pillow 5; when the head of the animal needs to be fixed, the head of the animal can be placed between the rubber head fixing belt 7 and the operating table 2, and then the head of the animal can be fixed by the elasticity of the rubber head fixing belt 7 itself, and at the same time, the rubber protective pad 15 and the soft elastic material of the rubber head fixing belt 7 itself can reduce the damage to the animal's body; when the angle needs to be adjusted, the operator can first hold the handrail 16 to adjust the screw 12 The operation table 2 drives the rotating shaft 17 to rotate, and when the rotating shaft 17 rotates, the plug-in ball 19 is squeezed, so that the plug-in ball 19 moves in the direction close to the spring 20, so that the plug-in ball 19 cancels the limit of the rotating shaft 17, so that the rotating shaft 17 can rotate. When the rotating shaft 17 rotates to a position where one of the plug-in holes 18 corresponds to the plug-in ball 19, the plug-in ball 19 is pushed to the inside of the plug-in hole 18 under the elastic action of the spring 20, so that the rotating shaft 17 can be limited to prevent the rotating shaft 17 from rotating subsequently, and the angle adjustment can be completed;

[0034] 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, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A rodent cerebral ischemia modeling fixture, comprising a fixing platform (1), characterized in that: An operating table (2) is arranged at the top of the fixed table (1); a rotating shaft (17) is fixed at the lower end of the operating table (2); the rotating shaft (17) extends to the inner side of the fixed table (1) and is rotatably connected to the fixed table (1); a plug-in assembly is arranged at a position corresponding to the rotating shaft (17) on the inner side of the fixed table (1); a fixing assembly is arranged at the top of the operating table (2); the fixing assembly comprises two fixing blocks (3); the two fixing blocks (3) are symmetrically fixed at the top positions of the operating table (2); a clamping plate (4) is arranged on the inner side of the fixing block (3); the clamping plate (4) is connected to the clamping plate (4) via a driving assembly.

2. The rodent cerebral ischemia modeling fixture as claimed in claim 1, characterized in that: The driving assembly comprises an internal threaded sleeve (8); the internal threaded sleeve (8) is transversely arranged at a position inside the fixed block (3); the internal threaded sleeve (8) is rotatably connected to the fixed block (3); the internal side of one end of the internal threaded sleeve (8) close to the clamping plate (4) is threadedly connected to a driving screw (9); the driving screw (9) is fixedly connected to the clamping plate (4); telescopic rods (11) are fixedly connected to both ends of the internal side of the fixed block (3); and the telescopic end of the telescopic rod (11) is fixedly connected to the clamping plate (4).

3. The rodent cerebral ischemia modeling fixture as claimed in claim 2, characterized in that: One end of the built-in threaded sleeve (8) away from the driving screw rod (9) extends to the outside of the fixing block (3); and a first knob (10) is fixed to one end of the driving screw rod (9) located outside the built-in threaded sleeve (8).

4. The rodent cerebral ischemia modeling fixture as claimed in claim 1, characterized in that: The fixing assembly also includes a pillow platform (5); the pillow platform (5) is fixed at the top of the operating table (2) and close to the fixing block (3); a neck splint (6) is arranged above the pillow platform (5); an adjusting screw (12) is vertically arranged at one end of the neck splint (6); the adjusting screw (12) is threadedly connected to the neck splint (6); the lower end of the adjusting screw (12) is rotatably connected to the pillow platform (5); a second knob (13) is fixed to the top of the adjusting screw (12); positioning rods (14) are vertically arranged at both ends of the neck splint (6); the positioning rod (14) is slidably connected to the neck splint (6); the positioning rod (14) is fixedly connected to the pillow platform (5).

5. The rodent cerebral ischemia modeling fixture as claimed in claim 4, characterized in that: The inner sides of the pillow platform (5) and the neck splint (6) are both fixed with rubber protective pads (15); and a rubber head fixing belt (7) is fixed at the top of the operating table (2) and at one end close to the pillow platform (5).

6. The rodent cerebral ischemia modeling fixture as claimed in claim 1, characterized in that: The plug-in assembly comprises a plug-in ball (19); the plug-in ball (19) is arranged at an inner position of a fixed platform (1); the plug-in ball (19) is slidably connected to the fixed platform (1); a plurality of plug-in holes (18) are evenly arranged at positions corresponding to the rotating shaft (17) and the plug-in ball (19); the plug-in ball (19) is plug-connected to the rotating shaft (17) through the plug-in holes (18); a spring (20) is fixed to one end of the plug-in ball (19) away from the rotating shaft (17); and one end of the spring (20) away from the plug-in ball (19) is fixedly connected to the fixed platform (1).

7. The rodent cerebral ischemia model fixator according to claim 1, characterized in that: Handrails (16) are fixed on both sides of the top of the operating table (2).

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