Self-clamping animal experiment limb fixator

Abstract

The invention discloses a self-clamping animal experiment limb fixator which comprises a front transverse plate and a rear transverse plate, the two transverse plates are connected through a supporting mechanism, each transverse plate is sleeved with two sets of sliding blocks, the lower end of each set of sliding blocks is connected with a clamping plate through a scissor type clamping mechanism, and the section of each clamping plate is in an arc shape conveniently attached to the leg. After the legs are inserted into the two clamping plates, the clamping mechanism is driven by gravity to contract so as to achieve automatic clamping. After the legs are placed in the clamping plates, the clamping plates can be pressed downwards at the connecting positions of the upper sides of the legs and the trunk, the clamping plates drive the clamping mechanisms to contract, automatic clamping is achieved, when the animals are taken out upwards, pressure applied to the clamping plates disappears, the clamping force does not exist, taking out and automatic fixing are convenient, and automatic opening is achieved when the animals are lifted up. During use, the legs of an animal are inserted between the two corresponding clamping plates, and after the clamping plates are pressed downwards and loosened, the upper ends of the clamping plates are extruded under the gravity action of the animal, the connecting rods contract, and the clamping plates clamp more tightly, so that automatic clamping is realized.

Description

Technical Field

[0001] The invention relates to the field of animal experiment limb fixation, in particular to a self-clamping animal experiment limb fixator. Background Art

[0002] When conducting animal experiments, it is often necessary to properly fix the experimental animals in order to better carry out the next step of operation. At present, the limbs are generally fixed by wire harnesses or fixing clips. The wire harness fixation requires four binding operations, and a support plate is also required to bear the weight to avoid straining the animal's limbs. The fixing clips are more likely to pinch the limbs of experimental animals because it is difficult to control the tightness of the clips. Therefore, how to fix experimental animals more safely, effectively and conveniently has become an urgent issue for scientific researchers. Summary of the invention

[0003] The purpose of the present invention is to provide a self-clamping animal experiment limb fixator to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-clamping animal experiment limb fixator, comprising two front and rear horizontal plates, the two horizontal plates are connected by a supporting mechanism, two sets of sliders are sleeved on each horizontal plate, and the lower end of each set of sliders is connected to a splint through a scissor-type clamping mechanism, the cross section of the splint is in an arc shape that is convenient for fitting the legs, and after the legs are inserted into the two splints, the clamping mechanism is driven to contract by gravity to achieve automatic clamping. After the legs are placed in the splint, the upper side of the legs and the connection with the trunk will press down on the splint, and the splint drives the clamping mechanism to contract to achieve automatic clamping. When the animal is taken out upward, the pressure on the splint disappears, and the clamping force is gone, which is convenient for taking out, automatic fixation, and automatic opening when the animal is lifted up.

[0005] Preferably, the support mechanism comprises vertical rods fixed at both ends of the horizontal plate, and the lower ends of the four vertical rods are connected by a frame-shaped base, which ensures the stability of the vertical rods and the horizontal plate.

[0006] Preferably, two sliders are provided in each group, and the clamping mechanism includes a connecting rod connected to the lower end of the slider, the two connecting rods on the lower side of each group of sliders are crossed in an "X" shape, and the corresponding two connecting rods are rotatably connected by a pin at the intersection, the splint is rotatably connected to the corresponding connecting rod to achieve clockwise or counterclockwise rotation, and the corresponding two splint openings are opposite to each other, and the splint is located on the inner side of the two horizontal plates, the diameter of the splint gradually increases from bottom to top to cope with the diameter change of the leg, which also facilitates the insertion of the leg from the upper side. After the leg is inserted into the splint, because the leg is thicker at the top and thinner at the bottom, the upper thigh will drive the splint to flip outward, thereby prompting the lower side to clamp the leg. The upper side also supports the thigh, and no matter how the calf kicks, it has no force. There are five fulcrums to achieve fixation. Because of the leg and the animal's own gravity, the splint is pressed down, and a downward force is exerted at the lower end of the connecting rod, prompting the lower ends of the two connecting rods to approach each other, so that the splint can better clamp the leg, making good use of its own gravity. Moreover, the heavier the body is, the tighter it clamps, and the more secure it is.

[0007] Preferably, the horizontal plate is evenly spaced to form grooves, between the two grooves there is an arc-shaped protrusion, and the two sliders of each group are located on both sides of the protrusion, so that under the gravity of the splint, the sliders can slide to the left and right sides and slide into the grooves due to the gravity force in the initial state relative to the horizontal horizontal plate, so that the two splints are separated to facilitate the insertion of the legs. Here, the slider can be heavier to facilitate the opening of the splints. At the same time, the protrusion also has a function of limiting horizontal movement to prevent the animal from moving left and right when shaking. When actively moving the animal, it can be lifted up and then moved left and right.

[0008] Preferably, the upper and lower walls of the inner cavity of the slider are in an arc shape with the middle part convex toward each other so as to facilitate flipping and sliding left and right, making it easier to flip over the protrusions and grooves when moving horizontally.

[0009] Preferably, it also includes a sliding mechanism arranged between the base and the vertical rod for front-back guidance.

[0010] Preferably, the sliding mechanism comprises two left and right guide plates arranged on the upper side of the base, and the front and rear ends of the guide plates are connected to support blocks fixed on the base, and the lower end of the vertical rod is fixed with a guide sleeve sleeved on the guide plate. The vertical rod changes its distance by moving forward and backward along the guide plate through the guide sleeve.

[0011] Preferably, the guide sleeve is against the base at the lower side, and the support block is an elastic rubber block so that the guide sleeve can be against the base to increase friction. The support block has a certain degree of willfulness, and at this time the guide sleeve will be against the base to generate friction. The surface of the base can be rough to increase friction, and a rubber cushion layer can also be provided to increase friction. This utilizes the animal's own gravity to achieve friction fixation, so that no additional fixation is required.

[0012] Preferably, a soft cushion layer is provided on the inner side of the splint to avoid pinching the animal.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When in use, insert the animal's legs between the two corresponding splints, press down the splints, and after releasing them, under the action of the animal's gravity, the upper end of the splints is squeezed, the connecting rod contracts, and the splints are clamped tighter, thereby achieving automatic clamping;

[0015] 2. The setting of the protrusion can make the slider slide to the left and right sides due to the gravity force in the initial state, and slide into the groove, so that the two splints are separated to facilitate the insertion of the legs. The slider can be heavier here to facilitate the opening of the splints. At the same time, the protrusion also has a function to limit horizontal movement to prevent the animal from moving left and right when shaking. When actively moving the animal, it can be lifted up and then moved left and right. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 It is a schematic diagram of the connection between the slider and the connecting rod of the present invention;

[0018] Figure 3 A top view of the present invention;

[0019] Figure 4 It is a left side view of the present invention;

[0020] Figure 5 is an axonometric view of the present invention;

[0021] Figure 6 An exploded view of the present invention;

[0022] Figure 7 This is the second embodiment of the connection between the connecting rod and the sliding block of the present invention.

[0023] In the figure: 1, horizontal plate; 2, slider; 3, clamping plate; 4, vertical rod; 5, base; 6, connecting rod; 7, groove; 8, protrusion; 9, guide plate; 10, guide sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figures 1 to 6 The present invention provides a technical solution for a self-clamping animal experiment limb fixer: a self-clamping animal experiment limb fixer, comprising two front and rear horizontal plates 1, the two horizontal plates 1 are connected by a supporting mechanism, each horizontal plate 1 is sleeved with two groups of sliders 2, and the lower end of each group of sliders 2 is connected with a splint 3 through a scissor-type clamping mechanism, and a soft cushion layer is arranged on the inner side of the splint 3 to avoid pinching the animal, and the cushion layer can be a sponge, a rubber pad, an air bag, etc. The cross section of the splint 3 is an arc shape that is convenient for fitting the legs. After the legs are inserted into the two splints 3, the clamping mechanism is driven to contract by gravity to achieve automatic clamping. After the legs are placed in the splint 3, the upper side of the legs and the connection with the trunk will press down the splint 3, and the splint 3 drives the clamping mechanism to contract to achieve automatic clamping. When the animal is taken out upward, the pressure on the splint 3 disappears, and the clamping force is gone, which is convenient for taking out and automatically fixed, and automatically opens when the animal is lifted up.

[0026] The supporting mechanism comprises vertical rods 4 fixed at both ends of the horizontal plate, and the lower ends of the four vertical rods 4 are connected by a frame-shaped base 5. The base 5 ensures the stability of the vertical rods 4 and the horizontal plate 1.

[0027] Two sliders are provided in each group, and the clamping mechanism includes a connecting rod 6 connected to the lower end of the slider 2. The two connecting rods 6 on the lower side of each group of sliders 2 are crossed in an "X" shape. The connecting rod 6 is hingedly connected to the slider 2, and the corresponding two connecting rods 6 are rotatably connected through the pins at the intersection. The splint 3 is rotatably connected to the corresponding connecting rod 6 to achieve clockwise or counterclockwise rotation, and the corresponding two splints 3 have openings facing each other, and the splint 3 is located on the inner side of the two cross plates 1. The diameter of the splint 3 gradually increases from bottom to top to cope with the diameter change of the leg, which also facilitates the insertion of the leg from the upper side. After the leg is inserted into the splint 3, because the leg is thicker at the top and thinner at the bottom, the upper thigh will drive the splint 3 to flip outward, thereby prompting the lower side to clamp the leg. The upper side also supports the thigh, and the calf can't use any force no matter how it kicks. There are five fulcrums, thereby achieving fixation. Because of the weight of the leg and the animal itself, the splint 3 is pressed down, and the lower end of the connecting rod 6 exerts a downward force, which prompts the lower ends of the two connecting rods 6 to approach each other, so that the splint 3 can better clamp the leg, making good use of its own gravity. Moreover, the heavier the body is, the tighter it clamps, and the more secure it is.

[0028] The horizontal plate 1 is evenly spaced to form a groove 7, and between the two grooves 7 is a convex arc-shaped protrusion 8, and the two sliders 2 of each group are respectively located on both sides of the protrusion 8, so that they can be on both sides under the gravity of the splint 3. Relative to the horizontal horizontal plate 1, the setting of the protrusion 8 can make the slider 2 slide to the left and right sides due to the gravity component in the initial state, and slide into the groove 7, so that the two splints 3 are separated, which is convenient for the legs to be put in. Here, the slider 2 can be heavier, which is convenient for opening the splint 3. At the same time, the protrusion 8 also has a function of limiting horizontal movement, avoiding left and right movement when the animal shakes, and when actively moving the animal, it can be lifted up and then moved left and right. The upper and lower walls of the inner cavity of the slider 2 are arc-shaped with the middle part convex to each other so as to flip and slide left and right. It is easier to turn over the protrusion 8 and the groove 7 when moving horizontally, but it is not possible to move horizontally directly, because the middle part of the slider 2 convexes to each other, so the gap with the horizontal plate 1 can be made very small, or directly tangent to avoid shaking up and down.

[0029] It also includes a sliding mechanism arranged between the base 5 and the vertical rod 4 for front and rear guidance. Change the front and rear width. The sliding mechanism includes two left and right guide plates 9 arranged on the upper side of the base 5, and the front and rear ends of the guide plates 9 are connected to support blocks fixed on the base 5, and the lower end of the vertical rod 4 is fixed with a guide sleeve 10 sleeved on the guide plate 9. The vertical rod 4 is changed along the guide plate 9 by the guide sleeve 10. The guide sleeve 10 is against the base 5 on the lower side, and the support block is an elastic rubber block so that the guide sleeve 10 can be against the base 5 to increase friction. The support block has a certain degree of capriciousness. At this time, the guide sleeve 10 will be against the base 5 to generate friction. Here, the surface of the base 5 can be rougher to increase friction, and a rubber cushion layer can also be set to increase friction. This utilizes the gravity of the animal itself to achieve friction fixation, so that no additional fixation is required.

[0030] See also Figure 7 , compared with the hinged connection between the connecting rod 6 and the slider 2 in Example 1, the connecting rod 6 is fixedly connected to the slider 2 here, and the other parts refer to Example 1. The advantage is that, without the action of external force, the slider 2 is not easy to slide horizontally in a large range. When adjusting the horizontal position, the connecting rod 6 needs to be flipped to make a large horizontal adjustment. In this way, no matter how the animal shakes, it will not cross the protrusion 8. Only manual adjustment, tilting the connecting rod 6, and sliding with the arc surface inside the slider 2 can be performed. It should be noted that the arc surface protruding up and down inside the slider 2 can be tangent to the cross plate 1, and the gap cannot be too large, which ensures that it will not slide due to the gap up and down, and also ensures that the animal will not cross the protrusion 8 when shaking. Because the arc surface inside the slider 2 can shake in a small range (to ensure that the connecting rod 6 can flip and clamp the animal's legs), a large range of shaking will press against the two ends of the slider 2 and get stuck, and it cannot cross the protrusion 8, thereby ensuring the position.

[0031] It should be noted that the animal here can be a rabbit or other animals, such as a mouse. Different sizes of the device can be used for animals of different sizes, and the device can be made into different size series for flexible use.

[0032] Working principle: When in use, insert the animal's legs between the two corresponding splints 3, press down the splint 3, and after releasing it, under the action of the animal's gravity, the upper end of the splint 3 is squeezed, the connecting rod 6 contracts, and the splint 3 is clamped tighter, thereby achieving automatic clamping. The setting of the protrusion 8 can make the slider 2 slide to the left and right sides due to the gravity force in the initial state, and slide into the groove 7, so that the two splints 3 are separated to facilitate the insertion of the legs. Here, the slider 2 can be heavier to facilitate the opening of the splint 3. At the same time, the protrusion 8 also has a function of limiting horizontal movement to prevent the animal from moving left and right when shaking. When actively moving the animal, it can be lifted up and then moved left and right.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-clamping animal experiment limb fixator, comprising two front and rear transverse plates (1), characterized in that: The two horizontal plates (1) are connected by a supporting mechanism, and two groups of sliders (2) are sleeved on each horizontal plate (1), and the lower end of each group of sliders (2) is connected to a clamping plate (3) through a scissor-type clamping mechanism, and the cross-section of the clamping plate (3) is in an arc shape that is convenient for fitting the legs. After the legs are inserted into the two clamping plates (3), the clamping mechanism is driven to contract by gravity to achieve automatic clamping.

2. The self-clamping animal experiment limb fixator according to claim 1, characterized in that: The supporting mechanism comprises vertical rods (4) fixed at both ends of the horizontal plate, and the lower ends of the four vertical rods (4) are connected via a frame-shaped base (5).

3. The self-clamping animal experiment limb fixator according to claim 1, characterized in that: Each group of sliders (2) is provided with two, and the clamping mechanism includes a connecting rod (6) connected to the lower end of the slider (2), the two connecting rods (6) on the lower side of each group of sliders (2) cross to form an "X" shape, and the corresponding two connecting rods (6) are rotatably connected through a pin at the intersection, the clamping plate (3) is rotatably connected to the corresponding connecting rod (6) to achieve clockwise or counterclockwise rotation, and the openings of the corresponding two clamping plates (3) are opposite, and the clamping plates (3) are located on the inner side of the two horizontal plates (1), and the diameter of the clamping plate (3) gradually increases from bottom to top to cope with the diameter change of the leg.

4. The self-clamping animal experiment limb fixator according to claim 3, characterized in that: The cross plate (1) is formed with grooves (7) at equal intervals, and between the two grooves (7) is a protrusion (8) that is convex and arc-shaped, and the two sliders (2) of each group are respectively located on both sides of the protrusion (8) so as to be on both sides under the action of gravity of the clamping plate (3).

5. The self-clamping animal experiment limb fixator according to claim 4, characterized in that: The upper and lower walls of the inner cavity of the sliding block (2) are in an arc shape with the middle part convex toward each other so as to facilitate the sliding and flipping from side to side.

6. The self-clamping animal experiment limb fixator according to claim 2, characterized in that: It also includes a sliding mechanism arranged between the base (5) and the vertical rod (4) for front and rear guidance.

7. The self-clamping animal experiment limb fixator according to claim 6, characterized in that: The sliding mechanism comprises two left and right guide plates (9) arranged on the upper side of the base (5), and the front and rear ends of the guide plates (9) are connected to support blocks fixed on the base (5), and the lower end of the vertical rod (4) is fixed with a guide sleeve (10) sleeved on the guide plate (9).

8. The self-clamping animal experiment limb fixator according to claim 7, characterized in that: The guide sleeve (10) is pressed against the base (5) at the lower side, and the support block is an elastic rubber block so that the guide sleeve (10) can press against the base (5) to increase friction.

9. The self-clamping animal experiment limb fixator according to claim 1, characterized in that: A soft cushion layer is arranged on the inner side of the clamping plate (3).

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