Laboratory spinal cord injury three-dimensional electric striking device

Abstract

The utility model provides a laboratory spinal cord injury three-dimensional electric striking device which is characterized in that longitudinal guide rails and a transverse guide rail are arranged on a bottom plate, two ends of the transverse guide rail are respectively connected with the longitudinal guide rails in a sliding manner, and a middle connecting seat is connected onto the transverse guide rail in a sliding manner; a vertical column is vertically arranged on the middle connecting seat, a large sleeve sleeves the vertical column in a sliding manner, a sliding driving block is arranged at the upper end of the large sleeve, a driving screw is sleeved with the sliding driving block in a threaded manner, the upper part of the driving screw is rotatably inserted into an adjustable connecting block, and the adjustable connecting block is fixedly mounted on the upper part of the vertical column; the large sleeve is provided with a scale section, and the scale section is slidably sleeved with a sliding connecting piece. An electromagnet is arranged on the sliding connecting piece; a small sleeve is arranged below the scale section, a striking rod is movably inserted into the small sleeve, and a magnetic attraction piece attracted by the electromagnet attraction head is arranged at the upper end of the striking rod. According to the device, the spinal cord of the rat can be accurately positioned and quantified in the modeling process, so that the same modeling condition is kept, and the modeling success rate and the modeling accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental modeling devices, in particular to a three-dimensional electric striking device for laboratory spinal cord injury. Background Art

[0002] The animal model of spinal cord injury is one of the means to conduct research on spinal cord injury. At present, many medical experiments need to be carried out on small animals such as rats, mice, and rabbits. The traditional method is to catch the animals manually and then hit them at the corresponding position. This artificial method is inconvenient to operate and easily causes experimental failure. Therefore, various laboratory spinal cord injury striking devices have been developed.

[0003] Among them, the spinal cord injury modeling device using the heavy object drop method adopts the principle of free fall, and uses a heavy hammer of a certain mass to fall freely at a fixed height to hit the exposed spinal cord to achieve injury modeling. For example, the Chinese invention patent application with application number CN201910457641.2 provides an animal spinal cord injury testing system, which fixes the animal on the operating table 1, adjusts the guide sleeve in three directions of front, back, left, right, and top and bottom according to the size of the animal, and then moves the heavy hammer and the striker to the bottom end of the electromagnet adsorption rod through a rope, so that the bottom end of the electromagnet adsorption rod is adsorbed with the heavy hammer, and then controls the electromagnet adsorption rod through a controller to complete the release of the heavy hammer and the striker, and the heavy hammer and the striker fall in the guide sleeve and hit the animal's spinal cord. The system avoids secondary impact and ensures modeling repeatability. However, when locating the impact site, it is manually visually inspected, and there are certain errors, and it is not convenient for fast and accurate positioning, and the positioning adjustment is also time-consuming and labor-intensive. Utility Model Content

[0004] In view of the above, it is necessary to provide a three-dimensional electric percussion device for laboratory spinal cord injury, which can accurately locate and quantify the rat spinal cord during the modeling process, thereby maintaining the same modeling conditions, improving the success rate and accuracy of the modeling, and being easy to operate.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] A three-dimensional electric striking device for spinal cord injury in a laboratory, comprising a bottom plate, a rat placement area is arranged on the bottom plate, a longitudinal guide rail and a transverse guide rail are arranged on the bottom plate, the longitudinal guide rails are arranged on opposite sides of the rat placement area and are located above the rat placement area, the two ends of the transverse guide rail are respectively slidably connected to the longitudinal guide rails, and a first locking piece for preventing sliding is arranged at the connection, the transverse guide rail is located directly above the rat placement area, an intermediate connecting seat is slidably connected thereto, and a second locking piece for preventing sliding is arranged at the sliding connection; a column is vertically arranged on the intermediate connecting seat, a large sleeve is slidably sleeved on the column, a sliding drive block is arranged at the upper end of the large sleeve, and the sliding drive block is arranged at the upper end of the large sleeve. The movable driving block is threadedly sleeved on the outside of the driving screw, and the upper part of the driving screw is rotatably inserted on the adjustable connecting block, and the adjustable connecting block is fixedly mounted on the upper part of the column; the large sleeve has a scale segment, and a sliding connecting piece is slidably sleeved on the scale segment, and a third locking piece for preventing sliding is provided at the sliding connection; an electromagnet is provided on the sliding connecting piece, and the electromagnet is electrically connected to a controller, and the controller is electrically connected to a control switch and a power supply module respectively; the large sleeve is provided with a small sleeve below the scale segment, and the central axis of the small sleeve is located directly below the electromagnet suction head, and a striking rod is movably inserted on the small sleeve, and a magnetic suction piece adsorbed by a power supply magnet suction head is provided on the upper end of the striking rod.

[0007] Preferably, both ends of the longitudinal guide rail in the length direction are provided with column feet, and the longitudinal guide rail is suspended on the base plate through the column feet.

[0008] Preferably, two transverse guide rails are provided, the two transverse guide rails are arranged in parallel, and the two ends of the two transverse guide rails are connected by a longitudinal slider. The transverse guide rail is slidably connected to the longitudinal guide rail through the longitudinal slider, the first locking piece is installed on the longitudinal slider, and the intermediate connecting seat is slidably connected to the two transverse guide rails at the same time.

[0009] Preferably, the upper end of the driving screw rod has an operating handle, and the operating handle is located above the adjustable connecting block.

[0010] Preferably, the upper section of the large sleeve is a scale section, and the scale of the scale section is arranged along the tube length of the large sleeve.

[0011] Preferably, the small sleeve is connected to the large sleeve via two fixed connecting pieces, and the two fixed connecting rods are spaced apart up and down.

[0012] Preferably, the length of the striking rod is greater than the length of the small sleeve.

[0013] Preferably, the first locking member, the second locking member and the third locking member are all locking screw structures.

[0014] Preferably, the rat placement area is movably equipped with a rat placement board, and the four corners of the top surface of the rat placement board are provided with fixing parts for fixing the limbs of the experimental animals. The bottom of the rat placement board is connected to the bottom plate by slidingly connecting the track groove with the track protrusion, and the rat placement board is detachably connected to the bottom plate.

[0015] Preferably, both ends of the rat placement area are provided with card slots, and both ends of the rat placement board are movably provided with card rods, and when the rat placement board moves to the rat placement area, the card rods are opposite to the card slots, and the card rods can be detachably embedded in the card slots.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model is used to construct a rat model of spinal cord injury in the laboratory. Three-dimensional positioning can be achieved by sliding the longitudinal guide rail, the transverse guide rail and the large sleeve up and down. A movable striking rod is arranged in the small sleeve arranged on the large sleeve. The striking rod can realize free fall by magnetic attraction. When not magnetically attracted, it can move on the small sleeve. The striking rod can assist in positioning by contacting the experimental animal during the overall positioning movement, so as to determine the position of the middle connecting seat. After determination, it is fixed by the first locking member and the second locking member. Then, the position of the striking rod is raised and the position of the electromagnet is adjusted according to the experimental requirements. After the striking rod is magnetically attracted to the electromagnet, the power is lost and the connection is disconnected, so that accurate fixed-point and quantitative striking can be achieved. That is to say, through the above-mentioned settings, the utility model can more accurately adjust the position of the striker, and can easily and accurately locate the striking part of the rat spinal cord.

[0018] 2. The utility model controls the landing of the striking rod by means of an electromagnet, which is convenient and accurate, and can achieve uniform striking momentum; at the same time, the size of the striking momentum can be adjusted by adjusting the height of the electromagnet, and ultimately, precise fixed-point and quantitative striking of the rat spinal cord can be achieved, thereby reducing errors.

[0019] 3. The striking rod of the utility model will not automatically retract after striking, which reduces the retraction of the striking rod exposed outside the small sleeve, thereby reducing the resistance caused by the rat's blood and tissue sticking to the striking rod, and further improving the accuracy and uniformity of the striking momentum.

[0020] 4. The utility model can accurately locate and quantify the rat spinal cord during the modeling process, thereby maintaining the same modeling conditions and improving the success rate and accuracy of modeling; at the same time, it can also adjust the size of the impact momentum by adjusting the height of the electromagnet and construct a model with a specific degree of injury as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model. In the figure, the striking rod is not adsorbed on the electromagnet.

[0022] Figure 2 It is a structural schematic diagram of the second embodiment of the utility model. In the figure, the striking rod is adsorbed on the electromagnet.

[0023] Main component symbols

[0024] In the figure: base plate 1, rat placement area 2, longitudinal guide rail 3, column foot 4, longitudinal slider 5, first locking piece 6, transverse guide rail 7, middle connecting seat 8, second locking piece 9, column 10, large sleeve 11, sliding drive block 12, drive screw 13, adjustable connecting block 14, sliding connector 15, third locking piece 16, electromagnet 17, small sleeve 18, striking rod 19, magnetic suction sheet 20, rat placement plate 21, and clamping rod 22.

[0025] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0026] See also Figure 1 In a preferred embodiment of the utility model, a three-dimensional electric percussion device for laboratory spinal cord injury includes a bottom plate 1, a rat placement area 2 is arranged on the bottom plate 1, a longitudinal guide rail 3 and a transverse guide rail 7 are arranged on the bottom plate 1, the longitudinal guide rail 3 is arranged on opposite sides of the rat placement area 2, and is located above the rat placement area 2, the two ends of the transverse guide rail 7 are respectively slidably connected to the longitudinal guide rail 3, and a first locking member 6 for preventing sliding is arranged at the connection, the transverse guide rail 7 is located directly above the rat placement area 2, and an intermediate connecting seat 8 is slidably connected thereto, and a second locking member 9 for preventing sliding is arranged at the sliding connection; a column 10 is vertically arranged on the intermediate connecting seat 8, a large sleeve 11 is slidably sleeved on the column 10, and a sliding drive block 12 is arranged at the upper end of the large sleeve 11, the The sliding drive block 12 is threadedly sleeved on the outside of the driving screw 13, and the upper part of the driving screw 13 is rotatably inserted on the adjustable connecting block 14, and the adjustable connecting block 14 is fixedly installed on the upper part of the column 10; the large sleeve 11 has a scale segment, and a sliding connecting piece 15 is slidably sleeved on the scale segment, and a third locking piece 16 for preventing sliding is provided at the sliding connection; an electromagnet 17 is provided on the sliding connecting piece 15, and the electromagnet 17 is electrically connected to a controller, and the controller is electrically connected to a control switch and a power module respectively; the large sleeve 11 is provided with a small sleeve 18 below the scale segment, and the central axis of the small sleeve 18 is located directly below the suction head of the electromagnet 17, and a striking rod 19 is movably inserted on the small sleeve 18, and a magnetic suction piece 20 adsorbed by the suction head of the power supply magnet 17 is provided on the upper end of the striking rod 19.

[0027] The striking rod 19 of the utility model can hit the spinal cord of the experimental animal by free fall after the electromagnet 17 loses power after being magnetically attracted, wherein the striking rod 19 is positioned by the large sleeve 11, the transverse guide rail 7 and the longitudinal guide rail 3. Since the striking rod 19 is installed on the large sleeve 11 through the small sleeve 18, the striking rod 19 can move on the small sleeve 18, and can point to the striking part of the experimental animal during the positioning process, and determine the plane position of the middle connecting seat 8 where the large sleeve 11 is located by indicating the positioning through the striking rod 19. After fixing it, the vertical position of the striking rod 19 and the height of the electromagnet 17 are adjusted according to the experimental conditions, thereby achieving precise point-to-point and quantitative striking, reducing errors, and this positioning adjustment method is more time-saving and labor-saving.

[0028] In this embodiment, the longitudinal guide rail 3 has column feet 4 at both ends in the length direction, and the longitudinal guide rail 3 is suspended on the bottom plate 1 through the column feet 4 and is located above the rat placement area 2. Preferably, two transverse guide rails 7 are provided, and the two transverse guide rails 7 are arranged in parallel, and the two ends of the two transverse guide rails are connected by a longitudinal slider 5, and the transverse guide rail 7 is slidably connected to the longitudinal guide rail 3 through the longitudinal slider 5, and the first locking member is installed on the longitudinal slider 5, and the intermediate connecting seat 8 is slidably connected to the two transverse guide rails 7 at the same time, so as to improve the stability of the placement of the intermediate connecting seat 8 through the two transverse guide rails 7.

[0029] In the present invention, the lifting and lowering of the large sleeve 11 is driven by the driving screw 13. Specifically, the rotation of the driving screw 13 relative to the adjusting connection block will cause the sliding driving block 12 to slide up and down on the column 10, thereby driving the large sleeve 11 to rise and fall on the column 10, thereby adjusting the height of the striking rod 19 from the rat placement area 2. Preferably, the upper end of the driving screw 13 has an operating handle, and the operating handle is located above the adjustable connection block 14, so that the driving screw 13 can be rotated by the operating handle.

[0030] In the utility model, the large sleeve 11 can not only drive the small sleeve 18 and the striking rod 19 thereon to rise and fall, but also drive the electromagnet 17 to rise and fall. In addition to rising and falling with the large sleeve 11, the electromagnet 17 can also rise and fall relative to the large sleeve 11 to adjust the distance between the suction head of the electromagnet 17 and the magnetic suction piece 20 at the upper end of the striking rod 19, thereby realizing the adjustment of the striking momentum, wherein the distance can be displayed by the scale of the scale segment. Preferably, the upper section of the large sleeve 11 is a scale segment, and the scale of the scale segment is set along the tube length of the large sleeve 11.

[0031] Furthermore, the small sleeve 18 of this embodiment is connected to the large sleeve 11 through two fixed connecting parts, and the two fixed connecting rods are arranged at intervals up and down; the length of the striking rod 19 is greater than the length of the small sleeve 18, so that both ends of the striking rod 19 can extend out of the small sleeve 18; the outer diameter of the magnetic sheet 20 is greater than the inner diameter of the small sleeve 18, that is, the magnetic sheet 20 will not pass through the small sleeve 18.

[0032] Furthermore, the first locking member 6, the second locking member 9 and the third locking member 16 are all locking screw structures, which are easy to operate and can achieve rapid adjustment and positioning.

[0033] When the utility model is used, after placing the test animal with the marked position to be hit in the rat placement area 2, loosen the first locking piece 6 and the second locking piece 9, the striking rod 19 is lowered to a certain position, and its lower end can contact the test animal when the magnetic sheet 20 is not magnetically attracted by the electromagnet 17. The striking rod 19 is moved by pulling the small sleeve 18 so that the lower end of the striking rod 19 is directly facing the marked position of the test animal. At this time, tighten the first locking piece 6 and the second locking piece 9, adjust the height position of the small sleeve 18 by driving the screw 13 to adjust the large sleeve 11, and adjust the height position of the electromagnet 17 according to the test conditions. After the electromagnet 17 absorbs the magnetic sheet 20, the striking rod 19 is suspended directly above the marked position of the test animal, completing the positioning operation. The electromagnet 17 is energized by the control switch, and the restriction on the striking rod 19 is released after the electromagnet 17 loses magnetism, and the striking rod 19 is free-falling to hit the test animal.

[0034] See also Figure 2 In the second embodiment of the utility model, considering that the transverse guide rail 7 is set above the rat placement area 2, so that the movement of the experimental animal is restricted when it is fixed in the rat placement area 2, a rat placement board 21 is movably installed in the rat placement area 2 in this embodiment, and fixing parts for fixing the limbs of the experimental animal are arranged at the four corners of the top surface of the rat placement board 21. The bottom of the rat placement board 21 is connected to the bottom plate 1 by slidingly connecting the track groove with the track protrusion. The rat placement board 21 is detachably connected to the bottom plate 1. By pulling out the rat placement board 21, the transverse guide rail 7 does not fall directly above the rat placement board 21, which makes it easy to fix the experimental animal on the rat placement board 21 and to mark the position of the experimental animal to be hit.

[0035] Preferably, both ends of the rat placement area 2 are provided with card slots, and both ends of the rat placement board 21 are movably provided with card rods 22. When the rat placement board 21 moves to the rat placement area 2, the card rod 22 is opposite to the card slot, and the card rod 22 is detachable and embedded in the card slot, so that after the rat placement board 21 is placed in the rat placement area 2, the rat placement board 21 can be stably fixed on the bottom plate 1 without sliding, thereby further reducing the error.

[0036] Finally, it should be noted that the weight of the striking rod 19 of the present invention can be selected according to experimental requirements, such as a 10g stainless steel rod.

[0037] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A three-dimensional electric striking device for laboratory spinal cord injury, comprising a bottom plate, wherein a rat placement area is provided on the bottom plate, characterized in that: The bottom plate is provided with a longitudinal guide rail and a transverse guide rail, the longitudinal guide rails are arranged on opposite sides of the rat placement area and are located above the rat placement area, the two ends of the transverse guide rails are respectively slidably connected to the longitudinal guide rails, and a first locking member for preventing sliding is arranged at the connection, the transverse guide rail is located directly above the rat placement area, an intermediate connecting seat is slidably connected thereto, and a second locking member for preventing sliding is arranged at the sliding connection; a column is vertically arranged on the intermediate connecting seat, a large sleeve is slidably sleeved on the column, a sliding drive block is arranged at the upper end of the large sleeve, the sliding drive block is threadedly sleeved on the outside of the driving screw, the The upper part of the driving screw is rotatably inserted into the adjustable connecting block, and the adjustable connecting block is fixedly mounted on the upper part of the column; the large sleeve has a scale segment, and a sliding connecting piece is slidably sleeved on the scale segment, and a third locking piece for preventing sliding is provided at the sliding connection; an electromagnet is provided on the sliding connecting piece, and the electromagnet is electrically connected to a controller, and the controller is electrically connected to a control switch and a power supply module respectively; a small sleeve is provided below the scale segment of the large sleeve, and the central axis of the small sleeve is located directly below the electromagnet suction head, and a striking rod is movably inserted into the small sleeve, and a magnetic suction piece adsorbed by a power supply magnet suction head is provided on the upper end of the striking rod.

2. A three-dimensional electric striking device for laboratory spinal cord injury as claimed in claim 1, characterized in that: The two ends of the longitudinal guide rail in the length direction are provided with column feet, and the longitudinal guide rail is suspended and installed on the bottom plate through the column feet.

3. A three-dimensional electric percussion device for laboratory spinal cord injury as claimed in claim 1, characterized in that: Two transverse guide rails are provided, and the two transverse guide rails are arranged in parallel. Both ends of the two transverse guide rails are connected by a longitudinal slider. The transverse guide rail is slidably connected to the longitudinal guide rail through the longitudinal slider. The first locking piece is installed on the longitudinal slider. The intermediate connecting seat is slidably connected to the two transverse guide rails at the same time.

4. A three-dimensional electric percussion device for laboratory spinal cord injury as claimed in claim 1, characterized in that: The upper end of the driving screw rod is provided with an operating handle, and the operating handle is located above the adjustable connecting block.

5. A three-dimensional electric striking device for laboratory spinal cord injury as claimed in claim 1, characterized in that: The upper section of the large sleeve is a scale section, and the scale of the scale section is arranged along the length of the large sleeve.

6. A three-dimensional electric percussion device for laboratory spinal cord injury as claimed in claim 1, characterized in that: The small sleeve is connected to the large sleeve through two fixed connecting pieces, and the two fixed connecting rods are arranged at intervals up and down.

7. A three-dimensional electric percussion device for laboratory spinal cord injury as claimed in claim 1, characterized in that: The length of the striking rod is greater than that of the small sleeve.

8. A three-dimensional electric striking device for laboratory spinal cord injury as claimed in claim 1, characterized in that: The first locking member, the second locking member and the third locking member are all locking screw structures.

9. A three-dimensional electric percussion device for laboratory spinal cord injury as claimed in claim 1, characterized in that: The rat placement area is movably provided with a rat placement board, the four corners of the top surface of the rat placement board are provided with fixing parts for fixing the limbs of the experimental animal, the bottom of the rat placement board is connected to the bottom plate in a manner of slidingly connecting the track groove with the track protrusion, and the rat placement board is detachably connected to the bottom plate.

10. A three-dimensional electric percussion device for laboratory spinal cord injury as claimed in claim 9, characterized in that: Both ends of the rat placement area are provided with card slots, and both ends of the rat placement board are movably provided with card rods. When the rat placement board moves to the rat placement area, the card rods face the card slots, and the card rods can be detachably embedded in the card slots.

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