Experimental animal blood extraction equipment

Abstract

The invention relates to the field of animal blood extraction, and provides experimental animal blood extraction equipment which comprises a base, a rotating supporting column, a placement plate, a rotating plate, a sliding table, a blood extractor and a clamping structure, the top of the base is rotationally connected with the rotating supporting column and the rotating plate, and the top of the rotating supporting column is fixedly connected with the placement plate; a blood extractor is arranged in the extractor containing groove, and a sliding table is arranged on the side, away from the container containing groove, of the rotary supporting column. The animal body is fixed through the clamping fixing ring, the tail of the animal is fixed through the tail clamping piece, the blood extractor can extract blood in a multi-direction and multi-angle mode through rotation and stretching of the sliding table extractor fixing ring, the protection head can rapidly penetrate into the body to collect blood, and the pain of the animal is reduced; the problems that the accuracy of artificial in-vivo blood extraction needs to be improved and in-vivo stirring occurs during animal blood extraction are solved.

Description

Technical Field

[0001] The invention relates to the field of animal blood extraction, in particular to an animal blood extraction device for experiments. Background Art

[0002] In various experimental studies, it is often necessary to collect blood from experimental animals for researchers to conduct routine tests or biochemical and chemical analyses. Therefore, time-saving and labor-saving blood extraction equipment is needed to extract blood from experimental animals. Most of the experimental blood extractions are performed manually.

[0003] China announcement number: CN115553965A, A multi-channel blood sampling fixing device for experimental animals comprises: a fixing body, the cross section of the solid body is equilateral hexagonal deformation, the fixing body comprises an upper fixing plate, a lower fixing plate, an upper side plate hinged on both sides of the upper fixing plate, and a lower side plate hinged on both sides of the lower fixing plate, corresponding No. 1 sleeves and No. 2 sleeves are respectively fixedly arranged on the hinged edges of the adjacent upper side plates and the lower side plates, the adjacent No. 1 sleeves and No. 2 sleeves are sleeved on the same rotating shaft, a head fixing sleeve is movably arranged on one side of the fixing body, a slot is arranged on the side of the upper fixing plate and the lower fixing plate close to the head fixing sleeve, a plug plate is arranged in the slot, and a slot for clamping the neck is opened on the plug plate; the present invention integrates different blood sampling methods into the present device, so that the blood sampling site is easier to expose and the purpose of blood sampling is convenient to achieve, although the above invention uses the sleeve, the plug plate and the card slot to realize the blood sampling methods of different channels, so that the blood sampling site is easier to expose, but it does not take into account the inevitable shaking of the arm of the staff when blood is collected, which causes the needle to stir during blood extraction.

[0004] There are many methods for extracting blood from experimental animals. According to the different blood extraction sites, they can be divided into: tail blood extraction, heart blood extraction, jugular vein blood extraction, abdominal aorta blood extraction, ear vein blood extraction, hind limb lateral saphenous vein blood extraction, etc. There are differences in terminal and non-terminal (such as anesthesia, blood volume) blood extraction techniques for dogs. Terminal refers to blood extraction after the dog's death, and vice versa. Reducing the dog's pain and anxiety during the experiment is as important as obtaining the expected experimental results. If the dog is stressed and accompanied by stress reactions, many biochemical and physiological changes will occur, which will affect the experimental results. Of course, out of humanitarianism, it is essential to reduce the pain of the dog during blood extraction, so it is necessary to achieve rapid and accurate insertion and slow and steady extraction.

[0005] In summary, the present invention provides an experimental animal blood extraction device to solve the above problems. Summary of the invention

[0006] The present invention provides an experimental animal blood extraction device, which fixes the animal body by placing a plate structure, quickly extracts blood from the body by a blood extractor, and realizes blood extraction at different angles by a sliding table, so as to solve the problem in the prior art that the accuracy of manual blood extraction needs to be improved and the needle is stirred during blood extraction due to arm shaking during animal blood extraction.

[0007] To achieve the above purpose, the technical solution of the present invention is as follows: An experimental animal blood extraction device, comprising: A base, wherein a rotating support column and a rotating plate are rotatably connected to the top of the base, a placement plate is fixedly connected to the top of the rotating support column, and the fixed connection is preferably welded, a blood extractor is arranged in the extractor placement groove, and a sliding platform is arranged on the side of the rotating support column away from the container placement groove, and the sliding platform is fixedly connected to the top of the base, and the fixed connection is preferably bolted; A placement plate, the top of the placement slot is slidably connected to a sliding base, the top of the sliding base is fixedly connected to a clamping fixing ring through a plurality of columns, the fixed connection is preferably welded, one end of the clamping fixing ring is slidably connected to a buckle, the placement slot is fixedly connected to a fixed baffle at the top away from the sliding base, the fixed connection is preferably welded, one side of the fixed baffle is fixedly connected to a No. 3 telescopic rod, the fixed connection is preferably riveted, one end of the No. 3 telescopic rod is fixedly connected to a tail clamp, the fixed connection is preferably riveted; A clamping structure, wherein the clamping structure includes a No. 1 telescopic rod, one end of the No. 1 telescopic rod is fixedly connected to a horizontal square rod, and the fixed connection is preferably welded. A plurality of No. 1 connecting rods are rotatably connected to one side of each end of the horizontal square rod, one end of the No. 1 connecting rod is rotatably connected to a support shell, the horizontal square rod is rotatably connected to a plurality of No. 2 connecting rods on a side away from the No. 1 connecting rod, and one end of the No. 2 connecting rod is rotatably connected to a vertical telescopic rod.

[0008] Preferably, the clamping and fixing ring is in the shape of a U-shaped long strip as a whole, and a forelimb groove is provided on the side of the clamping and fixing ring away from the sliding base, a neck groove is provided on the U-shaped bottom of the clamping and fixing ring at the end close to the sliding base, and a hind limb groove is provided on the U-shaped bottom of the clamping and fixing ring at the end away from the sliding base, and the hind limb groove, forelimb groove and neck groove are all arched, and the sizes of the two sides are the same.

[0009] Preferably, the buckle is provided with a semicircular groove on a side close to the neck groove, the diameter of the semicircular groove is the same as the width of the neck groove, and the semicircular groove provided by the buckle can control the size of the hind limb groove.

[0010] Preferably, the blood extractor includes a fixed outer shell, one end of the fixed outer shell is rotatably connected to a protective head, the inner wall of the fixed outer shell is fixedly connected to a through-tube connector, the through-tube connector is provided with a built-in pipe inside, one end of the built-in pipe is connected to a needle, and the fixed connection is preferably riveted.

[0011] Preferably, a blocking ring is fixedly connected to the inner wall in the middle of the protective head, a regulating piece is connected between the built-in pipe and the needle, a large disc is installed at the connection between the regulating piece and the built-in pipe, a small disc is installed at the connection between the regulating piece and the needle, the blocking ring is sleeved on the built-in pipe and fixedly connected to the inside of the protective head, and the outer wall diameter of the large disc is larger than the inner wall diameter of the blocking ring.

[0012] Preferably, a No. 2 telescopic rod is slidably connected to the top of the sliding table, a container placement ring is fixedly connected to the middle of the No. 2 telescopic rod, the No. 2 telescopic rod is rotatably connected to an extractor fixing ring at the end away from the sliding table, the bottom of the extractor fixing ring is rotatably connected to a rotating circle, and the extractor fixing ring is used to fix the blood extractor.

[0013] Preferably, the supporting shell is of an irregular shape as a whole, the horizontal square rod is arranged on the inner side of the supporting shell, the No. 1 telescopic rod is fixedly connected to the horizontal square rod by passing through the middle part of the supporting shell, square sliding rings are sleeved on the outer walls at both ends of the horizontal square rod, the No. 1 connecting rod and the No. 2 connecting rod are respectively rotatably connected to the square sliding rings on the outer walls at both ends of the horizontal square rod, and the extension and retraction of the No. 1 telescopic rod can drive the horizontal square rod to move up and down.

[0014] Preferably, the vertical telescopic rod as a whole is composed of a square telescopic rod part and a horizontal rod, the square telescopic rod part and the horizontal rod are at right angles, the end of the supporting shell is sleeved on the outer wall of the horizontal rod in the vertical telescopic rod, and the horizontal rod is slidably connected to the end of the supporting shell, a part of the square telescopic rod is slidably connected to the supporting shell, and one end is rotatably connected to the bottom of the tail clamp.

[0015] Preferably, the No. 2 connecting rod is rotatably connected to the rotating plate at one end connected to the supporting shell, and one end of the square telescopic rod part in the vertical telescopic rod is rotatably connected to the bottom of the tail clamping piece.

[0016] Preferably, the base is provided with a container placement groove and an extractor placement groove on one side of the rotating support column.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention fixes the dog's body by a clamping fixing ring, fixes the dog's tail by a tail clamp, and realizes the blood extractor to extract blood stably in multiple directions and angles by extending and retracting the No. 2 telescopic rod in the sliding table and rotating and retracting the extractor fixing ring. The blood collection can be done quickly by rotating the protective head to reduce the dog's pain. Compared with traditional artificial blood extraction, the accuracy is not high and may require a second insertion. This solves the problem that the accuracy of blood extraction in artificial bodies needs to be improved and the dog becomes restless due to pain during blood extraction.

[0018] 2. The present invention realizes blood extraction at different angles and directions by rotating the extractor fixing ring on the second telescopic rod, and the extractor fixing ring itself rotates. When extracting blood from the forelimbs and the neck, the blood extractor is adjusted to a suitable position through the second telescopic rod and the extractor fixing ring, and the protective head is inserted into the forelimb groove and the neck groove until the bottom of the rotating ring is against the periphery of the forelimb groove and the neck groove. At this time, the protective head is just stuck in the inner side of the forelimb groove and the neck groove, and the rotating ring is manually rotated to complete the blood extraction, which solves the problem of the needle stirring in the body due to the shaking of the experimenter's arm during blood extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall stereogram of the animal blood extraction device of the present invention; Figure 2 It is a three-dimensional diagram of the fixed structure of the animal blood extraction device of the present invention; Figure 3 is a three-dimensional diagram of the bottom of the placement plate of the animal blood extraction device of the present invention; Figure 4 It is a rotating stereogram of the bottom of the placement plate of the animal blood extraction device of the present invention; Figure 5 It is a three-dimensional diagram of the clamping structure at the bottom of the placement plate of the animal blood extraction device of the present invention; Figure 6 It is a stereogram of the fixed structure of the animal blood extraction device of the present invention; Figure 7 It is a three-dimensional diagram of the blood extraction structure of the animal blood extraction device of the present invention; Figure 8 It is an exploded view of a blood extractor of an animal blood extraction device of the present invention; In the figure: 1. Base; 11. Container placement slot; 12. Extractor placement slot; 2. Rotate the support column; 3. Placement plate; 31. Sliding base; 32. Clamping ring; 321. Forelimb slot; 322. Neck slot; 323. Hindlimb slot; 324. Neck fixing plate; 33. Buckle; 34. Fixed baffle; 35. No. 3 telescopic rod; 36. Tail clamp; 4. Rotate the plate; 5. Clamping structure; 51. No. 1 telescopic rod; 52. Horizontal square rod; 53. No. 1 connecting rod; 54. No. 2 connecting rod; 55. Support shell; 56. Vertical telescopic rod; 6. Sliding table; 61. No. 2 telescopic rod; 62. Container placement circle; 63. Extractor fixing circle; 64. Rotation circle; 7. Blood extractor; 71. Fixed shell; 72. Protective head; 73. Through pipe connector; 74. Internal pipeline; 75. Blocking ring; 76. Needle; 77. Regular parts. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0021] The present invention provides an experimental animal blood extraction device, comprising: A base 1, wherein a rotating support column 2 and a rotating plate 4 are rotatably connected to the top of the base 1, a placement plate 3 is fixedly connected to the top of the rotating support column 2, a blood extractor 7 is arranged in the extractor placement groove 12, and a sliding table 6 is arranged on the side of the rotating support column 2 away from the container placement groove 11, and the sliding table 6 is fixedly connected to the top of the base 1, and the rotating support column 2 slides and rotates on the base 1, and the rotating plate 4 rotates, so that the placement plate 3 can be rotated and be in an inclined or horizontal state; A placement plate 3, the top of the placement slot 3 is slidably connected to a sliding base 31, the top of the sliding base 31 is fixedly connected to a clamping ring 32 through a plurality of columns, one end of the clamping ring 32 is slidably connected to a buckle 33, the placement slot 3 is fixedly connected to a fixed baffle 34 at the top away from the sliding base 31, one side of the fixed baffle 34 is fixedly connected to a third telescopic rod 35, one end of the third telescopic rod 35 is fixedly connected to a tail clamp 36, the clamping ring 32 is retracted inwardly until the dog on the placement plate 3 is clamped, and then the support column 2 is rotated at the bottom of the placement plate 3 until the placement plate 3 is in a horizontal position, which realizes the fit of different puncture angles during blood extraction; The clamping structure 5 includes a No. 1 telescopic rod 61, one end of which is fixedly connected to a horizontal square rod 52, and one side of both ends of the horizontal square rod 52 is rotatably connected to a plurality of No. 1 connecting rods 53, one end of which is rotatably connected to a supporting shell 55, and the horizontal square rod 52 is rotatably connected to a plurality of No. 2 connecting rods 54 on a side away from the No. 1 connecting rod 53, and one end of the No. 2 connecting rod 54 is rotatably connected to a vertical telescopic rod 56, and the horizontal square rod 52 is driven to slide upward by the extension of the No. 1 telescopic rod 61, and the No. 2 connecting rod 54 is driven to rotate counterclockwise, and the No. 1 connecting rod 53 rotates clockwise to push the vertical telescopic rods 56 on both sides inward, and at the same time, the vertical telescopic rod 56 drives the tail clamping piece 36 to tighten and clamp the tail part inward, thereby achieving the effect of fixing the dog on the placement plate 3; As an embodiment of the present invention: the clamping and fixing ring 32 is in a U-shaped strip shape as a whole, and the clamping and fixing ring 32 is provided with a forelimb groove 321 on the side away from the sliding base 31, and the U-shaped bottom of the clamping and fixing ring 32 is provided with a neck groove 322 at the end close to the sliding base 31, and the U-shaped bottom of the clamping and fixing ring 32 is provided with a hindlimb groove 323 at the end away from the sliding base 31. The forelimb groove 321 is used for blood extraction at the forelimb position, and the neck groove 322 is used for blood extraction at the neck position. In order to prevent the dog from struggling and moving its neck, which may cause the blood extraction position at the neck to deviate, the neck is fixed by a neck fixing plate 324, and the hindlimb groove 323 is used to extend the dog backward through the hindlimb groove 323, and the fastener 33 is used to fix the monkey's hind legs in the hindlimb groove 323, so that the monkey or dog cannot retract its hind legs.

[0022] As an embodiment of the present invention: the buckle 33 is provided with a semicircular groove on one side close to the neck groove 322 , and the diameter of the semicircular groove is the same as the width of the neck groove 322 , so that the hind limb groove 323 is not affected by the buckle 33 and becomes smaller.

[0023] As an embodiment of the present invention: the blood extractor 7 includes a fixed shell 71, one end of the fixed shell 71 is rotatably connected to a protective head 72, the inner wall of the fixed shell 71 is fixedly connected to a through pipe connector 73, a built-in pipe 74 is arranged inside the through pipe connector 73, one end of the built-in pipe 74 is connected to a needle 76, the blocking ring 75 is pushed downward by rotating the protective head 72, and the regulating piece 77 is driven to move downward, and the needle 76 is extended downward, so that the needle 76 can penetrate into the dog's body to extract blood.

[0024] As an embodiment of the present invention: a blocking ring 75 is fixedly connected to the inner wall in the middle of the protective head 72, a regulating piece 77 is connected between the built-in pipe 74 and the needle 76, a large disc is installed at the connection between the regulating piece 77 and the built-in pipe 74, a small disc is installed at the connection between the regulating piece 77 and the needle 76, the blocking ring 75 is sleeved on the built-in pipe 74 and fixedly connected to the inside of the protective head 72, and the blocking ring 75 is installed at one end of the built-in pipe 74 close to the needle 76 and is close to the large disc.

[0025] As an embodiment of the present invention: the top of the sliding platform 6 is slidably connected to a No. 2 telescopic rod 61, the middle of the No. 2 telescopic rod 61 is fixedly connected to a container placement ring 62, the No. 2 telescopic rod 61 is rotatably connected to an extractor fixing ring 63 at the end away from the sliding platform 6, and the bottom of the extractor fixing ring 63 is rotatably connected to a rotating ring 64. After the blood extractor 7 is placed in the extractor fixing ring 63 and fixed, the blood extractor 7 is rotated and the position is adjusted by the No. 2 telescopic rod 61 and the extractor fixing ring 63, thereby realizing blood extraction from different positions of the dog.

[0026] As an embodiment of the present invention: the supporting shell 55 is irregular in shape as a whole, the horizontal square rod 52 is arranged on the inner side of the supporting shell 55, the No. 1 telescopic rod 52 is fixedly connected to the horizontal square rod 52 by passing through the middle part of the supporting shell 55, and square sliding rings are sleeved on the outer walls at both ends of the horizontal square rod 52. The No. 1 connecting rod 53 and the No. 2 connecting rod 54 are respectively rotatably connected to the square sliding rings on the outer walls at both ends of the horizontal square rod 52. By using the No. 1 telescopic rod 61 to lift the horizontal square rod 52 and rotating the rotating plate 4 clockwise to a vertical position, the placing plate 3 will be in a horizontal state. When the placing plate 3 is in a horizontal state, the rotating plate 4 must be in a vertical state.

[0027] As an embodiment of the present invention: the vertical telescopic rod 56 as a whole is composed of a square telescopic rod part and a horizontal rod, the square telescopic rod part and the horizontal rod are at right angles, the horizontal rod sleeved in the vertical telescopic rod 56 is slidably connected to the inner wall of the end of the support shell 55, and the horizontal rod is slidably connected to the end of the support shell 55, and the horizontal rod part of the vertical telescopic rod 56 sliding in the support shell 55 opens outward, and the tail clamping piece 36 opens.

[0028] As an embodiment of the present invention: the No. 2 connecting rod 54 is rotatably connected to the rotating plate 4 at one end connected to the supporting shell 55, and one end of the square telescopic rod part in the vertical telescopic rod 56 is rotatably connected to the bottom of the tail clamping piece 36, and the expansion and tightening of the vertical telescopic rod 56 will expand and tighten the tail clamping piece 36.

[0029] As an embodiment of the present invention: the base 1 is provided with a container placement groove 11 and an extractor placement groove 12 on one side of the rotating support column 2 .

[0030] Specific working principle: like Figure 6 As shown, the present invention places the dog on the placement board 3. For some dogs with stress reactions, it is necessary to use the clamping structure 5 and the placement board 3 structure to fix them to prevent the needle 76 from being offset. After placing the dog or monkey on the placement board 3, the sliding base 31 drives the clamping and fixing ring 32 to shrink inward. After fixing the upper body of the dog, the bolt at the bottom of the U-shaped clamping and fixing ring 32 is manually rotated to extend the internal neck fixing plate 324 until the dog's neck is slightly clamped, and then the dog's hind legs are placed in the hind limb groove 323, and the buckle 33 is slid upward until the dog's hind legs are locked. After the hind legs are fixed by the structure on the placement board 3, blood extraction from the dog in conventional positions is started, such as: blood extraction from the jugular vein, blood extraction from the ear vein, blood extraction from the small saphenous vein on the outside of the hind limb, etc. like Figure 2-4 As shown, when it is necessary to extract blood from the tail, since the tail of a dog is more flexible than that of a mouse, it is common for the dog's tail to move around when extracting blood from the tail. At this time, after the whole body passes through the clamping fixing ring 32, the rotating support column 2 rotates in the direction away from the rotating plate 4 and slides along the base 1 in the opposite direction of the rotating plate 4. At this time, the placement plate 3 gradually changes from an inclined state to a horizontal state due to the rotation of the rotating support column 2. The dog itself is more resistant to lying on its back. The placement plate 3 in an inclined state with the dog's head facing up and the lower body facing down will make the dog feel fearful. Preventing the plate from being adjusted to a horizontal state can calm the dog's fear to a certain extent and prevent the dog's tail from shrinking between the legs due to fear. At the same time, the placement plate 3 pulls the rotating plate 4 to make it rotate. When the placement plate 3 is completely horizontal, the rotating plate 4 is completely The dog is in a vertical state. When the rotating plate 4 starts to rotate, the clamping structure 5 starts to operate. The rotation of the rotating plate 4 causes the clamping structure 5 and the rotating plate 4 to rotate in the same direction, and causes the supporting shell 55 at the lower end of the clamping structure 5 together with the No. 1 telescopic rod 61 to gradually move away from the base 1. At this time, the No. 1 telescopic rod 61 extends, pushing the horizontal square rod 52 upward, causing the No. 2 connecting rod 54 to form an inward thrust on the vertical telescopic rod 56. At the same time, the vertical telescopic rod 56 drives the tail clamping piece 36 to move inward, so that the tail is clamped by the tail clamping piece 36, and blood is extracted from the tail. The placement plate 3 is turned to a horizontal state, and then the tail is fixed and blood is extracted. This method of adjusting the placement plate 3 to a horizontal state alleviates the dog's fear psychology, and at the same time, the method of clamping the tail by the clamping structure 5 helps the expected effect of subsequent tail blood collection. like Figure 7-8As shown, when it is necessary to extract blood from the forelimb, the canine forelimb obliquely passes through and is placed in the forelimb groove 321. The blood extractor 7 is first fixedly installed on the extractor fixing ring 63, and the blood container is placed in the container placing ring 62. Then, the blood extractor and the blood container are connected with a hose. After the experimenter determines the insertion point, the hair at this point is shaved and the rotating ring 64 is quickly rotated. While the rotating ring 64 rotates, the protective head 72 installed and fixed in the rotating ring 64 is driven to rotate. The protective head 72 rotates and moves down a small part to drive the blocking ring 75 inside the protective head 72 to form a downward thrust to push the regulating piece 77 and the needle 76, so that the needle 76 moves down and protrudes into the blood collection position to start blood extraction. During the extraction process, the dog trembles or shakes slightly, which will not have a great impact on the previously fixed blood extractor 7. Similarly, it prevents the needle 76 from stirring in the dog's body due to the unstable operation of the experimenter. After the end, the blood extractor 7 is pulled out and the rotating ring 64 is rotated to retract the needle. It should be noted that: when taking blood from a dog, the blood extractor 7 is controlled to move up and down by adjusting the second telescopic rod 61, and the extractor fixing ring 63 rotates on the second telescopic rod 61, and the extractor fixing ring 63 rotates itself to realize the blood extraction of the blood extractor 7 at different angles and directions. When extracting blood from the forelimbs and the neck, the blood extractor 7 is adjusted to a suitable position through the second telescopic rod 7 and the extractor fixing ring 63, and the protective head 72 is inserted into the forelimb groove 321 and the neck groove 322 until the bottom of the rotating ring 64 is against the periphery of the forelimb groove 321 and the neck groove 322. At this time, the protective head 72 is just stuck in the inner side of the forelimb groove 321 and the neck groove 322, and the rotating ring 64 is manually rotated to complete the blood extraction; The present invention fixes the dog's body by a clamping fixing ring 32, fixes the dog's tail by a tail clamp 36, and realizes the blood extractor 7 to extract blood in multiple directions and angles stably by extending and retracting the second telescopic rod 61 in the sliding platform 6 and rotating and retracting the extractor fixing ring 63. The protective head 72 is rotated to quickly penetrate the body for blood collection to reduce the dog's pain. Compared with traditional artificial blood extraction, the accuracy is not high and the possibility of secondary penetration is required. The problem of the need to improve the accuracy of blood extraction in the artificial body and the agitation generated during blood extraction in the dog's body is solved.

[0031] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An experimental animal blood extraction device, characterized in that: include: A base (1), wherein the top of the base (1) is rotatably connected to a rotating support column (2) and a rotating plate (4), the top of the rotating support column (2) is fixedly connected to a placement plate (3), a blood extractor (7) is arranged in the extractor placement groove (12), and a sliding platform (6) is arranged on a side of the rotating support column (2) away from the container placement groove (11), and the sliding platform (6) is fixedly connected to the top of the base (1); A placement plate (3), wherein the top of the placement plate (3) is slidably connected to a sliding base (31), the top of the sliding base (31) is fixedly connected to a clamping ring (32) via a plurality of columns, one end of the clamping ring (32) is slidably connected to a buckle (33), the placement slot (3) is fixedly connected to a fixed baffle (34) at the top away from the sliding base (31), one side of the fixed baffle (34) is fixedly connected to a third telescopic rod (35), and one end of the third telescopic rod (35) away from the fixed baffle (34) is fixedly connected to a tail clamp (36); A clamping structure (5), wherein the clamping structure (5) comprises a first telescopic rod (51), one end of the first telescopic rod (51) being fixedly connected to a horizontal square rod (52), both ends of the horizontal square rod (52) being rotatably connected to a first connecting rod (53), one end of the first connecting rod (53) being rotatably connected to a supporting shell (55), the horizontal square rod (52) being rotatably connected to a second connecting rod (54) on a side away from the first connecting rod (53), and one end of the second connecting rod (54) being rotatably connected to a vertical telescopic rod (56).

2. The experimental animal blood extraction device as claimed in claim 1, characterized in that: The clamping and fixing ring (32) is in the shape of a U-shaped strip as a whole. The clamping and fixing ring (32) is provided with a front limb groove (321) on a side away from the sliding base (31). The U-shaped bottom of the clamping and fixing ring (32) and an end close to the sliding base (31) are provided with a neck groove (322). The U-shaped bottom of the clamping and fixing ring (32) is provided with a hind limb groove (323) at an end away from the sliding base (31).

3. The experimental animal blood extraction device as claimed in claim 2, characterized in that: A semicircular groove is provided on the buckle (33) at one side close to the neck groove (322), and the diameter of the semicircular groove is the same as the width of the neck groove (322).

4. The experimental animal blood extraction device as claimed in claim 1, characterized in that: The blood extractor (7) comprises a fixed outer shell (71), one end of the fixed outer shell (71) is rotatably connected to a protective head (72), the inner wall of the fixed outer shell (71) is fixedly connected to a through-tube connector (73), an internally provided internal pipe (74) of the through-tube connector (73), and one end of the internal pipe (74) is connected to a needle (76).

5. The experimental animal blood extraction device as claimed in claim 4, characterized in that: A blocking ring (75) is fixedly connected to the inner wall of the middle part of the protective head (72); a regulating piece (77) is connected between the built-in pipe (74) and the needle (76); a large disc is installed at the connection between the regulating piece (77) and the built-in pipe (74); a small disc is installed at the connection between the regulating piece (77) and the needle (76); the blocking ring (75) is sleeved on the built-in pipe (74) and is fixedly connected to the inside of the protective head (72).

6. The experimental animal blood extraction device as claimed in claim 1, characterized in that: The top of the sliding platform (6) is slidably connected to a second telescopic rod (61), the middle of the second telescopic rod (61) is fixedly connected to a container placement ring (62), the upper end of the second telescopic rod (61) is rotatably connected to an extractor fixing ring (63) at an end away from the sliding platform (6), and the bottom of the extractor fixing ring (63) is rotatably connected to a rotating ring (64).

7. The experimental animal blood extraction device as claimed in claim 1, characterized in that: The supporting shell (55) is of an irregular shape as a whole. The horizontal square rod (52) is arranged inside the supporting shell (55). The first telescopic rod (51) is fixedly connected to the horizontal square rod (52) by penetrating the middle of the supporting shell (55). Square sliding rings are sleeved on the outer walls at both ends of the horizontal square rod (52). The first connecting rod (53) and the second connecting rod (54) are rotatably connected to the square sliding rings on the outer walls at both ends of the horizontal square rod (52).

8. The experimental animal blood extraction device as claimed in claim 7, characterized in that: The vertical telescopic rod (56) as a whole is composed of a square telescopic rod portion and a horizontal rod, the square telescopic rod portion and the horizontal rod are at right angles, the horizontal rod sleeved in the vertical telescopic rod (56) is slidably connected to the inner wall of the end of the supporting shell (55), and the horizontal rod is slidably connected to the end of the supporting shell (55).

9. The experimental animal blood extraction device as claimed in claim 8, characterized in that: The second connecting rod (54) is rotatably connected to the rotating plate (4) at one end connected to the supporting shell (55), and one end of the square telescopic rod in the vertical telescopic rod (56) is rotatably connected to the bottom of the tail clamping member (36).

10. The experimental animal blood extraction device as claimed in claim 1, characterized in that: The base (1) is provided with a container placement groove (11) and an extractor placement groove (12) on one side of the rotating support column (2).

Images