Spine fixing device for rats and mice
By designing a spine fixed device including clamping poles and ear poles holding devices, the problem of spine clip holding in existing technologies is not firm and the parts are not easy to disassemble and replace. Holding, reducing experimental damage and easy maintenance.
Patent Information
- Application Number
- CN202420394330.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The existing spinal clamps have problems such as insecure clamping, easy to fall off the experimental subjects, and difficult to disassemble and replace when fixing the spine of rats.
Design a fixed device of the spine of the mice, a combination of clamping poles and ear stick clamping device, and adjusting the distance between the ear rods on the clamping tips by fixed conductor to achieve accurate Hold. This device also includes sliding porous blocks and spring, which is used to adjust the position of the ear clip holding device and provide a cushioning effect.
The firm fixation of the spine of the rat -like avoids the possibility of clamping and falling off in the experimental object, reducing the damage caused by repeated clamping, and the modular design of the device's parts, making the components easy to disassemble and replace, which is convenient for maintenance and replacement.
Smart Images
Figure CN222398912U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of animal experimental equipment, in particular to a spinal fixation device for mice. Background Art
[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.
[0003] In animal experiments, in order to prevent experimental animals from being injured, to ensure that the observed indicators are not affected, and to prevent experimenters from being bitten by animals, the animals' activities must first be restricted to keep them in a quiet state. At this time, workers need to grasp the animals reasonably and fix the experimental objects reliably, so as to facilitate the smooth progress of subsequent experiments.
[0004] The spinal clamp is a device for fixing the spine of rats and mice, and its purpose is to achieve reliable clamping of the spinal cord of experimental animals. However, existing spinal clamps often have problems such as loose clamping, easy falling off of experimental objects, integrated design of parts, and difficulty in disassembly and replacement. Utility Model Content
[0005] In view of the deficiencies in the prior art, the purpose of the embodiments of the present utility model is to provide a spinal fixation device for mice and rats, which at least solves one of the above problems.
[0006] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:
[0007] A spinal fixation device for mice and rats, comprising:
[0008] A clamping claw rod, one end of which is connected with a fixed guide ring through a thread;
[0009] An ear rod clamping device is installed on the clamping claw rod, and the ear rod clamping device includes two clamping claws, which are a fixed clamping claw and a movable clamping claw arranged oppositely and in parallel. The clamping claw rod passes through the fixed clamping claw and the movable clamping claw, the fixed clamping claw is fixedly connected to the clamping claw rod, the movable clamping claw is movably connected to the clamping claw rod, and the fixed guide ring is butted against the movable clamping claw;
[0010] The fixed clamping jaw and the movable clamping jaw are respectively provided with a pair of ear rods, the two ear rods are arranged in parallel up and down, and the ear rods on the two clamping jaws are opposite to each other.
[0011] The utility model accurately clamps the spinous processes of the mouse spine by using two opposite ear rods on the clamping claw, and adjusts the distance between the two fixed ear rods on the clamping claw by fixing the guide ring to achieve accurate fixation of the spinous processes, so that the device can firmly fix the mouse spine.
[0012] In some embodiments, the fixed clamp is provided with a pair of ear rods, which pass through the fixed clamp horizontally, and the head of the ear rod is provided with a right-angle threaded rod, which improves the clamping friction and contact area through the right-angle thread, and further firmly fixes the mouse spine.
[0013] In some embodiments, a channel and a screw hole are also provided on the clamp, the screw hole is perpendicular to the channel, the channel accommodates the movable ear rod, and the screw hole is threadedly connected to a limit screw. When the screw is tightened, the end of the screw abuts against the movable ear rod to limit the movement of the movable ear rod.
[0014] In some embodiments, one end of the fixed ear rod is a right-angle thread structure, which facilitates the precise positioning and clamping of the spinous process of the mouse.
[0015] In some embodiments, the ear rod clamping device also includes a connecting rod, which is fixed to the movable clamping jaw and passes through the fixed clamping jaw to be slidably connected with the fixed clamping jaw; a spring is sleeved on the connecting rod and is arranged between the two clamping jaws.
[0016] In some embodiments, it also includes a base, a stand base and a stand shaft, the end of the clamping claw rod away from the fixed guide ring is connected to the stand shaft, the stand shaft is connected to the stand base, and the stand base is connected to the base.
[0017] In some embodiments, a transversely penetrating groove is provided on the base, and the guide seat is slidably connected to the base groove.
[0018] In some embodiments, the seat shaft and the clamping claw rod are connected by a sliding porous block, and the sliding porous block is provided with two mutually perpendicular but non-intersecting channels, which respectively pass through the seat shaft and the clamping claw rod, and the two channels are threadedly connected to respectively abut against screws of the seat shaft and the clamping claw rod, so as to adjust the horizontal position and height of the ear rod clamping device.
[0019] In some embodiments, the clamping claw rod is arranged horizontally with the base.
[0020] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:
[0021] 1. The utility model realizes accurate fixation of the spinous process of the rat by cooperating with the fixed ear rod clamp and the movable ear rod clamp, accurately clamps the spinous process of the rat spine by the ear rods opposite to each other on the clamp, and accurately fixes the spinous process by adjusting the distance between the ear rods opposite to each other on the clamp by moving the fixed guide ring, so that the device is firmly fixed, avoids the possibility of experimental failure caused by the experimental object falling off after clamping, and reduces the damage caused by repeated clamping.
[0022] 2. The ear rod of the utility model can be fine-tuned in axial position. The right-angle end of the ear rod is provided with a thread, which can increase the contact friction and contact area, fit the spine of the mouse more accurately, and make the fixing effect of the device more firm.
[0023] 3. The sliding porous block of the utility model makes the longitudinal and lateral positions of the ear rod clamping device adjustable. The ear rod clamping device can realize circular rotation through the clamping claw rod, thereby increasing the clamping range of the device. The manual operation is simple and the structural design is reasonable, so that the operation space of the ear rod clamping is larger and meets the use requirements.
[0024] 4. The design of the ear rod of the utility model avoids the possibility of experimental failure caused by the experimental object falling off due to clamping, reduces the damage caused by repeated clamping, and the gasket installed between the ear rod and the clamping claw realizes a buffering effect, reduces the friction loss of the instrument caused by the rat's activities, minimizes the cost of the instrument, and achieves a firm and stable fixation of the rat.
[0025] 5 The component connection method of the utility model makes each component detachable, realizes the modular design of parts, ensures that the parts of the device are easy to disassemble and replace, and is convenient for maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. 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.
[0027] Figure 1 A schematic diagram of the structure of one or more embodiments of the utility model;
[0028] Figure 2 A schematic diagram of a threaded hole of a sliding porous block of one or more embodiments of the utility model;
[0029] Figure 3 A schematic diagram of the structure of an ear rod clamping device according to one or more embodiments of the utility model;
[0030] Figure 4 A schematic diagram of threaded holes of a fixed clamping jaw and a movable clamping jaw in one or more embodiments of the utility model;
[0031] Figure 5 A schematic diagram of the structure of the ear rod of one or more embodiments of the utility model;
[0032] Figure 6 A schematic diagram of a structure in which multiple spinal fixators are assembled for one or more embodiments of the utility model.
[0033] In the figure: 1. base; 2. guide seat; 3. stand base; 4. stand shaft; 5. sliding porous block; 51. porous threaded hole one; 52. porous threaded hole two; 53. porous threaded hole three; 54. porous threaded hole four; 6. clamping claw rod; 7. ear rod clamping device; 8. retaining guide ring; 71. fixed clamping claw; 72. movable clamping claw; 73. connecting rod; 74. ear rod; 75. fixing nut; 76. limit screw one; 711. functional threaded hole one; 712. functional threaded hole two; 713. functional threaded hole three; 714. functional threaded hole four; 715. functional threaded hole five; 716. functional threaded hole six; 742. blocking plate; 741. fixed ear rod head; 743. fixed ear rod shaft; 744. washer.
[0034] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION
[0035] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0036] As introduced in the background technology, the spinal clamps in the prior art often have problems such as loose clamping, easy falling off of the experimental objects, integrated parts design, and difficulty in disassembly and replacement when clamping the mouse spine. In order to solve the above technical problems, the utility model proposes a spinal fixation device for rats and mice.
[0037] like Figure 1 As shown, one embodiment of the utility model records a spinal fixation device for mice and rats, including a base 1 and a spinal fixer, the spinal fixer includes a stand base 3, a stand shaft 4, a clamping claw rod 6, a sliding porous block 5 and an ear rod clamping device 7 and other structures, and the base 1 and the spinal fixer are made of stainless steel.
[0038] The base 1 is provided with a guide groove that runs through the base horizontally, and a guide seat 2 that matches the guide groove is connected to the guide groove. The guide seat 2 is slidably connected to the guide groove to meet the slide of the guide seat 2 along the guide groove. The guide seat 2 is rotatably connected to one end of the stand base 3. The stand base 3 is arranged parallel to the base 1, and the stand base 3 can rotate in a circle with the guide seat 3 as the center. The above-mentioned guide groove can be provided with one or more, and the guide seat 2 and the guide seat 2 can be provided with one or more guide grooves. Figure 6 The spinal fixation device shown may also be provided in one or more arrangements.
[0039] The other end of the stand base 3 is connected to the lower end of the stand shaft 4 through screws. The stand shaft 4 is perpendicular to the base 1, and the bottom surface is arranged on the base 1.
[0040] like Figure 2 As shown, the seat shaft 4 is a column with uniform thickness, and a sliding porous block 5 is connected to the seat shaft 4. A vertical channel is arranged in the sliding porous block 5. The sliding porous block 5 is sleeved on the seat shaft 4 through the vertical channel and is slidably connected to the seat shaft 4, so as to realize the longitudinal lifting and lowering of the sliding porous block 5, thereby realizing the height adjustment of the ear rod clamping device 7.
[0041] The sliding porous block 5 is also provided with a porous threaded hole 51 connected to the vertical channel. The screw is connected to the threaded hole 51 by threads. When the screw is tightened, the screw abuts against the stand shaft 4 to fix the height of the sliding porous block 5.
[0042] A horizontal channel is also provided on the sliding porous block 5. The horizontal channel and the vertical channel do not cross each other. The sliding porous block 5 is sleeved on the clamping claw rod 6 through the horizontal channel and is slidably connected with the clamping claw rod 6, so as to realize the adjustment of the lateral position of the clamping claw rod 6 and the ear rod clamping device 7, and at the same time cooperate with the lifting and lowering of the sliding porous block 5 to meet the movement of the ear rod clamping device 7 in space.
[0043] A limiting hole communicating with the horizontal channel is also provided on the sliding porous block 5 , and a screw is connected to the limiting hole through a thread, and when the screw is tightened, the screw abuts against the clamping claw rod 6 , thereby fixing the horizontal position of the clamping claw rod 6 .
[0044] The other end of the clamping claw rod 6 is connected to the fixed guide ring 8 by threading, and the fixed guide ring 8 is rotated to adjust its position on the clamping claw rod 6 so that it abuts against the movable clamping claw 71, thereby adjusting the position of the movable clamping claw 71. The fixed guide ring 8 is manually rotated to adjust the range of motion of the movable clamping claw, and the functional fixation of the ear rod clamping device 7 is achieved by maximally compressing the range of motion of the movable clamping claw 71.
[0045] like Figure 3 , Figure 4 As shown, the ear bar clamping device 7 includes a fixed ear bar clamp and a movable ear bar clamp, and the ear bar clamping device 7 is used to clamp and fix the rat spinal cord. The fixed ear bar clamp includes a fixed clamping claw 72, a connecting rod 73, two ear bars 74, two limit bolts 75, and a fixing screw 76, and the movable ear bar clamp includes a movable clamping claw 71, two ear bars 74, and two limit bolts 75.
[0046] Both the fixed clamping jaw 72 and the movable clamping jaw 71 are installed with ear rods 74, and the threaded ends of the ear rods are installed with limit bolts 75. The fixed clamping jaw 72 is connected in parallel with the movable clamping jaw 71 through a connecting rod 73, and the fixed clamping jaw 72 is fixed to the clamping jaw rod 6 through a limit screw 76.
[0047] The two ear rods 74 on the fixed clamping jaw 72 and the movable clamping jaw 71 are respectively arranged up and down, and the ear rods 74 on the fixed clamping jaw 72 and the movable clamping jaw 71 are opposite to each other.
[0048] The four ear rods 74 are respectively installed in the functional threaded holes 3 713 of the fixed ear rod clamp 7, the connecting rod 73 is installed in the functional threaded hole 4 714, and the other end of the connecting rod 73 is slidably connected to the functional threaded hole 2 712 at the corresponding position of the fixed clamp 72. The functional threaded hole 2 711 is connected to the functional threaded hole 4 715.
[0049] The clamping jaw rod 6 is a rod-shaped structure with a stepped structure. The fixed clamping jaw 72 and the movable clamping jaw 71 are sleeved on the thin rod of the clamping jaw rod 6 through a channel, and are arranged between the fixed guide ring 8 and the sliding porous block 5. The fixed clamping jaw 72 is fixedly installed at the step of the clamping jaw rod 6. The fixed clamping jaw 72 can be threadedly connected to the clamping jaw rod to be fixed on the clamping jaw rod 6. The fixed clamping jaw 72 can also be provided with a functional threaded hole 6 716 communicating with the channel. The functional threaded hole 6 716 is threadedly installed with a screw, and the screw abuts against the clamping jaw rod 6. The position of the fixed clamping jaw 72 is limited by tightening the screw.
[0050] The movable clamp 72 is arranged between the fixed clamp 1 and the fixed guide ring 8, and is slidably connected to the clamp rod 6. Its position on the clamp rod 6 is adjusted by rotating the fixed guide ring 8 so that it abuts against the movable clamp 71, thereby adjusting the position of the movable clamp 71.
[0051] The ear rod clamping device 7 also includes a spring, which is sleeved on the connecting rod 73, and the fixed ear rod clamp and the movable ear rod clamp are elastically connected through the spring.
[0052] like Figure 5 As shown, the ear rod 74 includes a right-angle threaded head 741, a blocking plate 742, and a fixed ear rod shaft 743 connected in sequence, the above structures are connected as one, the ear rod shaft 743 is installed with a fixing nut 75, the diameter of the threaded hole is larger than the diameter of the fixed ear rod threaded shaft 743, and smaller than the diameter of the blocking plate 742 and the diameter of the fixing nut 75, and the fixed ear rod threaded shaft 743 is connected to the fixing nut 75 by threads. A washer 744 is arranged between the blocking plate 742 and the clamping jaw.
[0053] The free ends of the four ear rods 74 are all right-angle threaded ends.
[0054] When the rat spine clamping device of the utility model is used, firstly, according to the position of the mouse, the longitudinal adjustment of the ear bar clamping device is achieved by moving the sliding porous block 5 on the stand shaft 4, and the lateral adjustment of the ear bar clamping device is achieved by sliding the clamping claw rod 6 in the sliding porous block 5. The movement of the spinal fixer on the base 1 as a whole is achieved by moving the guide seat 2 in the guide groove of the guide base 1, and the ear bar clamping device 7 is kept horizontally placed.
[0055] Then, according to the width of the mouse spine, the movable range of the movable clamp 72 is compressed by the fixed guide ring 8, and the clamping distance is roughly adjusted so that the width spacing between the ear rods 74 relative to the fixed clamp 71 and the movable clamp 72 is almost the same as the width of the mouse spine. The ear rods 74 on both sides are used to achieve clamping. The threads on the ear rods 74 increase the friction and contact area with the mouse spinous process, thereby improving the clamping effect. After the mouse spine is clamped in, the ear rods 74 on the movable clamp 72 are clamped with the ear rods 74 of the fixed clamp 71 through the fixed guide ring 8 to achieve clamping and fixation of the mouse spinal cord.
[0056] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.
Claims
1. A spinal fixation device for mice and rats, characterized in that: include: A clamping claw rod, one end of which is connected with a fixed guide ring through a thread; An ear rod clamping device is installed on the clamping claw rod, and the ear rod clamping device includes two clamping claws, which are a fixed clamping claw and a movable clamping claw arranged oppositely and in parallel. The clamping claw rod passes through the fixed clamping claw and the movable clamping claw, the fixed clamping claw is fixedly connected to the clamping claw rod, the movable clamping claw is movably connected to the clamping claw rod, and the fixed guide ring is butted against the movable clamping claw; The fixed clamping jaw and the movable clamping jaw are respectively provided with a pair of ear rods, the two ear rods are arranged in parallel up and down, and the ear rods on the two clamping jaws are opposite to each other.
2. The spinal fixation device for mice and rats as claimed in claim 1, characterized in that: A pair of ear rods are arranged on the fixed clamping jaws, both of which are right-angle threaded ear rods. The ear rods pass through the clamping jaws in a horizontal direction, and the placement direction of the ear rods is perpendicular to the placement direction of the clamping jaws.
3. The spinal fixation device for mice and rats as claimed in claim 2, characterized in that: The clamping jaw is provided with a through hole, and the ear rod passes through the hole and is threadedly connected with the clamping jaw.
4. The spinal fixation device for mice and rats as claimed in claim 3, characterized in that: A hole and a screw hole are also arranged on the clamping jaw. The screw hole is perpendicular to the hole. The movable ear rod is accommodated in the hole. A limit bolt is connected by thread in the screw hole. When the screw is tightened, the bolt abuts against the ear rod to limit the movement of the ear rod.
5. The spinal fixation device for mice and rats as claimed in claim 2, characterized in that: One end of the fixed ear rod is a right-angle thread structure, which improves the clamping friction and contact area, and facilitates the efficient positioning and clamping of the spinous process of the mouse.
6. The spinal fixation device for mice and rats as claimed in claim 1, characterized in that: The ear rod clamping device also includes a connecting rod, which is fixed on the movable clamping jaw and penetrates the fixed clamping jaw to be slidably connected with the fixed clamping jaw; a spring is sleeved on the connecting rod and is arranged between the two clamping jaws.
7. The spinal fixation device for mice and rats as claimed in claim 1, characterized in that: It also includes a base, a stand base and a stand shaft. One end of the clamping claw rod away from the fixed guide ring is connected to the stand shaft, the stand shaft is connected to the stand base, and the stand base is connected to the base.
8. The spinal fixation device for mice and rats as claimed in claim 7, characterized in that: The base is provided with a transversely penetrating groove, and the guide seat is slidably connected with the base groove.
9. The spinal fixation device for mice and rats as claimed in claim 7, characterized in that: The seat shaft and the clamping claw rod are connected by a sliding porous block, and the sliding porous block is provided with two mutually perpendicular but non-intersecting channels, which respectively pass through the seat shaft and the clamping claw rod. The two channels are threadedly connected to the screws of the seat shaft and the clamping claw rod respectively, so as to adjust the horizontal position and height of the ear rod clamping device.