Four-limb positioning device for dog blood sampling

Abstract

The dog blood sampling limb positioning device comprises a bottom plate, a forelimb fixing assembly and a hind limb fixing assembly are arranged at the two ends of the bottom plate in the length direction respectively, a driving assembly is arranged on the bottom face of the bottom plate, and the driving assembly is used for driving the hind limb fixing assembly to move in the length direction of the bottom plate; a plurality of second lifting columns are further arranged on the top face of the bottom plate, and a supporting plate used for supporting the abdomen of the dog is arranged at the top ends of the second lifting columns. The driving assembly is used for driving the hind limb fixing assembly to move in the length direction of the bottom plate, the distance between the fore limb fixing assembly and the hind limb fixing assembly can be adjusted, and the dog fixing device is suitable for fixing the four limbs of dogs with different body lengths; the supporting plate can ascend or descend through the second lifting column along with swing of the body of the dog, and the purposes that the acting point of the dog is lowered, the swing amplitude of the body and four limbs of the dog is reduced, and blood sampling of workers is facilitated are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dog limb fixing equipment, in particular to a dog limb positioning device for blood sampling. Background Art

[0002] In today's life, most common pets are dogs and cats. When examining dogs, blood can be drawn, smeared, centrifuged, biochemically analyzed, and blood count tested to help doctors determine the organ function, blood quality, and whether the dog has parasites in its body. In addition, blood tests can be used to initially check whether the blood sugar is too high, whether there are problems with the kidneys and liver, whether the dog has blood parasites, and whether the dog is anemic.

[0003] When drawing blood from a dog's forelimb, it is usually done at a pet hospital or some qualified pet shops. The blood drawing site is generally the subcutaneous cephalic vein on the dorsal side of the forelimb - the subcutaneous cephalic vein on the dorsal side of the forelimb is located just in front of the upper dorsal side of the front paw. Under normal circumstances, a small dog is restrained by the owner or doctor manually, and another person can perform the blood drawing. However, when encountering a large dog or a fierce dog, some unexpected situations are prone to occur when the owner or doctor is restraining the dog manually, such as: the dog attacks personnel; flees and collides, causing losses in the store. For this reason, a limb positioning device is required for blood drawing from large dogs or fierce dogs. However, the existing dog blood drawing limb positioning devices generally only fix the dog's limbs to prevent the dog's limbs from swinging during the blood drawing process, but the dog will still shake its body, thereby affecting the staff's blood drawing. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a dog limb positioning device for blood collection, so as to solve the problem that the existing technology requires a limb positioning device for blood collection from large dogs or fierce dogs, but the existing dog limb positioning device for blood collection generally only fixes the dog's limbs to prevent the dog's limbs from swinging during the blood collection process, but the dog will still shake its body, thereby affecting the blood collection of the staff.

[0005] The utility model is realized by the following technical solutions:

[0006] A dog blood sampling limb positioning device comprises a bottom plate, two ends of the bottom plate along the length direction are respectively provided with a forelimb fixing component and a hind limb fixing component, and a driving component is provided on the bottom surface of the bottom plate, and the driving component is used to drive the hind limb fixing component to move along the length direction of the bottom plate;

[0007] A plurality of second lifting columns are also arranged on the top surface of the bottom plate, the bottom ends of the second lifting columns are connected to the bottom plate, the top ends extend upward, and the top ends of the second lifting columns are provided with support plates for supporting the abdomen of the dog.

[0008] Furthermore, the second lifting column includes an outer rod and an inner rod, the outer rod and the inner rod are movably connected, an installation cavity is provided inside the outer rod, a limiting ring located in the installation cavity is fixedly connected to the lower end of the inner rod, a support spring is connected in the installation cavity, the upper and lower ends of the support spring are respectively connected to the limiting ring and the bottom surface of the installation cavity, and the inner rod can slide up and down in the installation cavity under the action of the support spring.

[0009] Furthermore, the drive assembly includes two connecting plates and a lead screw, the lead screw is located between the two connecting plates, the two ends of the lead screw are respectively connected to the two connecting rods, a sliding rod is provided on one side of the lead screw, the two ends of the sliding rod are respectively connected to the two connecting plates and are arranged parallel to the lead screw.

[0010] Furthermore, a slider is connected to the lead screw, and the slider is slidably matched with the slide rod, and telescopic rods are connected to opposite sides of the slider, one end of the telescopic rod is connected to the slider, and the other end is connected to a connecting rod, and the connecting rod is connected to the hind limb fixing assembly;

[0011] A fixing block is also arranged on the bottom surface of the bottom plate, and telescopic rods are connected to opposite sides of the fixing block. One end of the telescopic rod is connected to the fixing block, and the other end is connected to a connecting rod, and a forelimb fixing assembly is connected to the connecting rod.

[0012] Furthermore, the forelimb fixing assembly and the hind limb fixing assembly both include a first semi-circular plate, which is connected to a connecting rod, a fixing belt is connected to the first semi-circular plate, one end of the connecting rod is connected to the telescopic rod, and the other end is connected to a fixing frame, one end of the fixing belt is connected to the first semi-circular plate, and the other end passes through the fixing frame.

[0013] Furthermore, a threaded hole is provided on one side of the fixing frame, a threaded rod is connected to the threaded hole, one end of the threaded rod is connected to a pressure plate, and the pressure plate is located in the fixing frame.

[0014] Furthermore, a first lifting column is disposed on the top surface of the bottom plate, a fixing plate is disposed on the top surface of the first lifting column, and a head fixing component for positioning the neck of a dog is disposed on the fixing plate.

[0015] Furthermore, the head fixing assembly includes a collar composed of two second semicircular plates, airbags are bonded to the inner walls of the two semicircular plates, an air pump is arranged on the fixing plate, the air pump and the airbag are connected by an trachea, and the two ends of the trachea are respectively connected to the outlet of the air pump and the inlet of the airbag.

[0016] Furthermore, the two second semi-circular arc plates are connected by a clamping component, and the clamping component includes two mounting plates respectively connected to one side of the two second semi-circular arc plates, wherein a limit block is provided on the bottom surface of one mounting plate, and a clamping hole is provided on one side of the limit block, and a limit frame matched with the limit block is provided on the top surface of the other mounting plate, and a clamping block matched with the clamping hole is provided on one side of the mounting plate, the clamping block is connected with the inside of the limit frame, and an active cavity is provided on one side of the limit frame, and a limit plate located inside the active cavity is provided on the clamping block, and a reset spring is provided in the active cavity, and both ends of the reset spring are respectively connected with one side of the limit plate and one side of the active cavity.

[0017] The beneficial effects of the utility model are:

[0018] The dog blood sampling limb positioning device uses a driving component to drive the hind limb fixing component to move along the length direction of the bottom plate, and can adjust the distance between the front limb fixing component and the hind limb fixing component. It is suitable for fixing the limbs of dogs with different body lengths. After the dog's limbs are fixed, the dog's abdomen and the support plate are in contact at the same time. The support plate will rise or fall through the second lifting column as the dog's body swings, thereby lowering the dog's fulcrum and reducing the swing amplitude of the dog's body and limbs, which is convenient for staff to collect blood.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereoscopic diagram of the utility model (first viewing angle);

[0021] Figure 2 It is a three-dimensional diagram of the utility model (second viewing angle);

[0022] Figure 3 It is the front view of the utility model;

[0023] Figure 4 For the utility model Figure 2 A partial enlarged view of middle A;

[0024] Figure 5 It is a structural schematic diagram of the forelimb fixing assembly of the utility model;

[0025] Figure 6 It is a front view of the head fixing assembly of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the clamping member of the utility model;

[0027] Figure 8 It is a schematic diagram of the internal structure of the second lifting column of the utility model;

[0028] In the figure: 1. bottom plate;

[0029] 201, forelimb fixing assembly; 202, hind limb fixing assembly; 21, first semicircular arc plate; 22, fixing belt; 23, fixing frame; 24, threaded rod; 25, pressing plate;

[0030] 3. driving assembly; 31. connecting plate; 32. lead screw; 33. sliding rod; 34. sliding block;

[0031] 4. Connecting rod; 5. Fixed block; 6. Telescopic rod; 7. First lifting column; 8. Fixed plate;

[0032] 9. Head fixing assembly; 91. Second semicircular arc plate; 92. Air bag; 93. Air pump; 94. Air tube;

[0033] 95, clamping member; 951, mounting plate; 952, limiting block; 953, clamping hole; 954, limiting frame; 955, movable cavity; 956, clamping block; 957, limiting plate; 958, return spring;

[0034] 10. Second lifting column; 101. External rod; 102. Mounting cavity; 103. Internal rod; 104. Limiting ring; 105. Support spring;

[0035] 11. Support plate. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. 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.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0041] See also Figure 1-8 The utility model provides a technical solution: a dog blood sampling limb positioning device, comprising a bottom plate 1, a forelimb fixing component 201 and a hind limb fixing component 202 are respectively arranged at both ends of the bottom plate 1 along the length direction, and a driving component 3 is arranged on the bottom surface of the bottom plate 1, and the driving component 3 is used to drive the hind limb fixing component 202 to move along the length direction of the bottom plate 1;

[0042] A plurality of second lifting columns 10 are also arranged on the top surface of the bottom plate 1 . The bottom ends of the second lifting columns 10 are connected to the bottom plate 1 , and the top ends extend upward. A support plate 11 for supporting the abdomen of the dog is arranged on the top ends of the second lifting columns 10 .

[0043] In this solution, the forelimb fixing assembly 201 and the hindlimb fixing assembly 202 have the same structure and are used to fix the forelimbs and hindlimbs of the dog respectively; the second lifting column 10 is located between the forelimb fixing assembly 201 and the hindlimb fixing assembly 202, and supports the abdomen of the dog through the support plate 11.

[0044] When in use, the staff first places the dog on the base plate 1, with the dog's abdomen located on the support plate 11, and then fixes the dog's forelimbs through the forelimb fixing component 201. Then, according to the dog's body length, the driving component 3 drives the hind limb fixing component 202 to move along the length direction of the base plate 1, adjusts the distance between the forelimb fixing component 201 and the hind limb fixing component 202, and fixes the dog's hind limbs through the hind limb fixing component 202. After the limbs are fixed, the dog will resist by swinging its body, and the body will arch to form a bow shape or swing downward. The support plate 11 on the dog's abdomen will rise or fall through the second lifting column 10 as the dog's body swings, so that the swing amplitude of the dog's body is reduced, which is convenient for the staff to draw blood.

[0045] The driving component 3 is used to drive the hind limb fixing component 202 to move along the length direction of the bottom plate 1, and the distance between the forelimb fixing component 201 and the hind limb fixing component 202 can be adjusted. It is suitable for fixing the limbs of dogs with different body lengths. After the limbs of the dog are fixed, the abdomen of the dog and the support plate 11 are in contact, and the support plate 11 will rise or fall through the second lifting column 10 as the dog's body swings, thereby lowering the dog's fulcrum and reducing the swing amplitude of the dog's body and limbs, which is convenient for the staff to draw blood.

[0046] In this embodiment: the second lifting column 10 includes an outer rod 101 and an inner rod 103, the outer rod 101 and the inner rod 103 are movably connected, an installation cavity 102 is arranged inside the outer rod 101, a limit ring 104 located inside the installation is fixedly connected to the lower end of the inner rod 103, a support spring 105 is connected inside the installation cavity 102, and the upper and lower ends of the support spring 105 are respectively connected to the limit ring 104 and the bottom surface of the installation cavity 102, and the inner rod 103 can slide up and down in the installation cavity 102 under the action of the support spring 105.

[0047] When the dog is placed on the bottom plate 1, its abdomen contacts the support plate 11, and the support plate 11 will be compressed and lowered partially through the second lifting column 10. When the dog's body arches to form a bow shape, the pressure on the support plate 11 is reduced, and the support spring 105 will be in an extended state to drive the inner rod 103 to slide upward in the installation cavity 102, so that the inner rod 103 drives the support plate 11 to rise and continue to contact the dog's abdomen. When the dog's body moves downward to lie down, the pressure on the support plate 11 will increase, and the inner rod 103 will descend in the installation cavity 102 as the support spring 105 contracts. When the support spring 105 contracts to the extreme, the support plate 11 is also maintained at the lowest height, further limiting the swing amplitude of the dog's body.

[0048] In this embodiment: the driving assembly 3 includes two connecting plates 31 and a screw 32, the screw 32 is located between the two connecting plates 31, and the two ends of the screw 32 are respectively connected to the two connecting rods 4. A sliding rod 33 is provided on one side of the screw 32, and the two ends of the sliding rod 33 are respectively connected to the two connecting plates 31 and are arranged parallel to the screw 32.

[0049] In this solution, a crank is provided on one of the connecting plates 31 , one end of the lead screw 32 is connected to the crank, and the end away from the crank is connected to the other connecting plate 31 .

[0050] By turning the crank handle, the screw 32 is driven to rotate forward or reverse. The forward rotation of the screw 32 drives the hind limb fixing assembly 202 to move along the length direction of the base plate 1 and approach the forelimb fixing assembly 201, and the reverse rotation of the screw 32 drives the hind limb fixing assembly 202 to move along the length direction of the base plate 1 and away from the forelimb fixing assembly 201.

[0051] In this embodiment: the lead screw 32 is connected with a slider 34, and the slider 34 is slidably matched with the slide bar 33, and the two opposite sides of the slider 34 are connected with telescopic rods 6, one end of the telescopic rod 6 is connected to the slider 34, and the other end is connected to the connecting rod 4, and the connecting rod 4 is connected to the hind limb fixing assembly 202;

[0052] A fixing block 5 is also provided on the bottom surface of the base plate 1, and telescopic rods 6 are connected to the opposite sides of the fixing block 5. One end of the telescopic rod 6 is connected to the fixing block 5, and the other end is connected to the connecting rod 4, and the connecting rod 4 is connected to the forelimb fixing component 201.

[0053] In this solution, the connecting rod 4 is L-shaped, one end of the vertical rod of the connecting rod 4 is connected to the telescopic rod 6, one end of the cross rod of the connecting rod 4 is located on the top surface of the base plate 1, and the forelimb fixing component 201 and the hind limb fixing component 202 are respectively located on the cross rods of each connecting rod 4; the telescopic rod 6 can be a cylinder or a hydraulic cylinder.

[0054] When in use, since the fixing block 5 is fixedly connected to the bottom surface of the front end of the base plate 1, the forelimb fixing assembly 201 is also fixed on the top surface of the front end of the base plate 1. When the slider 34 is moved by rotating the screw rod, the sliding rod 33 can limit the slider 34 to prevent the slider 34 from rotating with the screw rod. The movement of the slider 34 drives the hind limb fixing block 5 to move along the length direction of the base plate 1. When the slider 34 moves and drives the hind limb fixing assembly 202 to move to the position of the canine's hind limbs, the staff starts all the telescopic rods 6 at the same time. When the telescopic rods 6 extend outward or retract inward along the width of the base plate 1, the distance between the two forelimb fixing assemblies 201 and the distance between the two hind limb fixing assemblies 202 are adjusted respectively.

[0055] In this embodiment: the forelimb fixing assembly 201 and the hind limb fixing assembly 202 both include a first semi-circular plate 21, the first semi-circular plate 21 is connected to the connecting rod 4, a fixing belt 22 is connected to the first semi-circular plate 21, one end of the connecting rod 4 is connected to the telescopic rod 6, and the other end is connected to the fixing frame 23, one end of the fixing belt 22 is connected to the first semi-circular plate 21, and the other end passes through the fixing frame 23.

[0056] When in use, the dog's front and hind limbs are respectively contacted with the first semicircular arc plates 21 of the front limb fixing assembly 201 and the hind limb fixing assembly 202, and then the fixing belt 22 is pulled to clamp the dog's front and hind limbs, and the excess fixing belt 22 is passed through the fixing frame 23.

[0057] In this embodiment, a threaded hole is provided on one side of the fixing frame 23 , a threaded rod 24 is connected to the threaded hole, one end of the threaded rod 24 is connected to a pressing plate 25 , and the pressing plate 25 is located inside the fixing frame 23 .

[0058] After the fixing belt 22 has clamped the limbs of the dog and passed through the fixing frame 23, the staff rotates the threaded rod 24 so that the pressing plate 25 can tightly press the fixing belt 22 to prevent the limbs of the dog from loosening.

[0059] In this embodiment: a first lifting column 7 is further provided on the top surface of the bottom plate 1 , a fixing plate 8 is provided on the top surface of the first lifting column 7 , and a head fixing component 9 for positioning the neck of a dog is provided on the fixing plate 8 .

[0060] The first lifting column 7 can be a cylinder or a hydraulic cylinder. The height of the head fixing component 9 can be adjusted by the first lifting column 7. The head fixing component 9 fixes the dog's neck, further lowers the dog's fulcrum, reduces the dog's body swing, and can prevent the dog from attacking the staff.

[0061] In this embodiment: the head fixing component 9 includes a collar composed of two second semicircular arc plates 91, and the inner walls of the two semicircular arc plates are bonded with air bags 92. An air pump 93 is provided on the fixing plate 8. The air pump 93 and the air bag 92 are connected through an air pipe 94. The two ends of the air pipe 94 are respectively connected to the outlet of the air pump 93 and the inlet of the air bag 92.

[0062] The dog's neck is fixed between the two second semicircular arc plates 91, and then the air pump 93 is started. The air pump 93 injects air into the airbag 92 through the air tube 94, so that the airbag 92 expands rapidly. The expanded airbag 92 effectively clamps the dog's neck, and the material of the airbag 92 is soft, which can reduce the damage to the dog's neck when the dog's head struggles.

[0063] Among them, the air pump model is HG-120-C 220V.

[0064] In this embodiment: the two second semi-circular arc plates 91 are connected by a clamping component 95, and the clamping component 95 includes two mounting plates 951 respectively connected to one side of the two second semi-circular arc plates 91, wherein a limiting block 952 is provided on the bottom surface of one mounting plate 951, and a clamping hole 953 is provided on one side of the limiting block 952, and a limiting frame 954 matched with the limiting block 952 is provided on the top surface of the other mounting plate 951, and a clamping block 956 matched with the clamping hole 953 is provided on one side of the mounting plate 951, and the clamping block 956 is connected with the inside of the limiting frame 954, and an active cavity 955 is provided on one side of the limiting frame 954, and a limiting plate 957 located inside the active cavity 955 is provided on the clamping block 956, and a return spring 958 is provided in the active cavity 955, and two ends of the return spring 958 are respectively connected with one side of the limiting plate 957 and one side of the active cavity 955.

[0065] When the dog's neck is fixed between the two second semi-circular plates 91, the two second semi-circular plates 91 are closed, and the block 956 on one of the mounting plates 951 is pulled, so that the block 956 located in the limit frame 954 enters the movable cavity 955. When the limit block 952 on the bottom surface of the other mounting plate 951 is engaged with the limit frame 954, the block 956 is released. Under the action of the return spring 958, the block 956 slides out of the movable cavity 955 and is engaged with the hole 953 on the limit block 952, so that the two second semi-circular plates 91 are tightly connected to prevent the dog's head from breaking free.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A dog blood sampling limb positioning device, comprising a bottom plate (1), wherein the bottom plate (1) is provided with a forelimb fixing component (201) and a hind limb fixing component (202) at both ends along the length direction, characterized in that: A driving assembly (3) is provided on the bottom surface of the bottom plate (1), and the driving assembly (3) is used to drive the hind limb fixing assembly (202) to move along the length direction of the bottom plate; A plurality of second lifting columns (10) are also arranged on the top surface of the base plate (1); the bottom ends of the second lifting columns (10) are connected to the base plate (1) and the top ends extend upward; and the top ends of the second lifting columns (10) are provided with support plates (11) for supporting the abdomen of the dog.

2. The dog blood sampling limb positioning device according to claim 1, characterized in that: The second lifting column (10) comprises an outer rod (101) and an inner rod (103); the outer rod (101) and the inner rod (103) are movably connected; a mounting cavity (102) is arranged inside the outer rod (101); a limit ring (104) located inside the mounting cavity is fixedly connected to the lower end of the inner rod (103); a support spring (105) is connected inside the mounting cavity (102); upper and lower ends of the support spring (105) are respectively connected to the limit ring (104) and the bottom surface of the mounting cavity (102); and the inner rod (103) can slide up and down in the mounting cavity (102) under the action of the support spring (105).

3. The dog blood sampling limb positioning device according to claim 2, characterized in that: The driving assembly (3) comprises two connecting plates (31) and a lead screw (32), wherein the lead screw (32) is located between the two connecting plates (31), and the two ends of the lead screw (32) are respectively connected to two connecting rods (4), and a sliding rod (33) is provided on one side of the lead screw (32), and the two ends of the sliding rod (33) are respectively connected to the two connecting plates (31) and are arranged parallel to the lead screw (32).

4. The dog blood sampling limb positioning device according to claim 3, characterized in that: The lead screw (32) is matched with a slider (34), and the slider (34) is slidably matched with the slide bar (33). The slider (34) is connected to telescopic rods (6) on opposite sides. One end of the telescopic rod (6) is connected to the slider (34), and the other end is connected to a connecting rod (4). The connecting rod (4) is connected to a hind limb fixing assembly. A fixing block (5) is also provided on the bottom surface of the base plate (1), and telescopic rods (6) are connected to opposite sides of the fixing block (5), one end of the telescopic rod (6) is connected to the fixing block (5), and the other end is connected to a connecting rod (4), and a forelimb fixing assembly is connected to the connecting rod (4).

5. The dog blood sampling limb positioning device according to claim 4, characterized in that: The forelimb fixing assembly (201) and the hindlimb fixing assembly (202) both comprise a first semi-circular plate (21), the first semi-circular plate (21) being connected to a connecting rod (4), a fixing belt (22) being connected to the first semi-circular plate (21), one end of the connecting rod (4) being connected to a telescopic rod (6), and the other end being connected to a fixing frame (23), one end of the fixing belt (22) being connected to the first semi-circular plate (21), and the other end passing through the fixing frame (23).

6. The dog blood sampling limb positioning device according to claim 5, characterized in that: A threaded hole is provided on one side of the fixing frame (23), a threaded rod (24) is matched and connected to the threaded hole, one end of the threaded rod (24) is connected to a pressing plate (25), and the pressing plate (25) is located inside the fixing frame (23).

7. The dog blood sampling limb positioning device according to claim 6, characterized in that: A first lifting column (7) is also provided on the top surface of the base plate (1), a fixing plate (8) is provided on the top surface of the first lifting column (7), and a head fixing component (9) for positioning the neck of a dog is provided on the fixing plate (8).

8. The dog blood sampling limb positioning device according to claim 7, characterized in that: The head fixing assembly (9) comprises a collar composed of two second semicircular plates (91), the inner walls of the two semicircular plates are bonded with air bags (92), an air pump (93) is arranged on the fixing plate (8), the air pump (93) and the air bag (92) are connected via an air pipe (94), and the two ends of the air pipe (94) are respectively connected to the outlet of the air pump (93) and the inlet of the air bag (92).

9. The dog blood sampling limb positioning device according to claim 8, characterized in that: The two second semi-circular arc plates (91) are connected by a clamping member (95), and the clamping member (95) comprises two mounting plates (951) respectively connected to one side of the two second semi-circular arc plates (91), wherein a limit block (952) is arranged on the bottom surface of one of the mounting plates (951), and a clamping hole (953) is arranged on one side of the limit block (952), and a limit frame (954) adapted to the limit block (952) is arranged on the top surface of the other mounting plate (951), and the mounting plate (951) A clamping block (956) adapted to the clamping hole (953) is provided on one side, the clamping block (956) is communicated with the interior of the limiting frame (954), a movable cavity (955) is provided on one side of the limiting frame (954), a limiting plate (957) located inside the movable cavity (955) is provided on the clamping block (956), a return spring (958) is provided in the movable cavity (955), and two ends of the return spring (958) are respectively connected to one side of the limiting plate (957) and one side of the movable cavity (955).

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