Fixing device for living small animal detection

Abstract

The invention relates to the technical field of animal detection, in particular to a fixing device for living small animal detection, which comprises a base, a negative pressure control host arranged on the base, a pedal and a buffer bottle arranged on two sides of the negative pressure control host, and a hose for connecting the pedal, the buffer bottle and the negative pressure control host, a detection mechanism is arranged on the mounting table, the detection mechanism comprises a detection mounting seat arranged on the mounting table, an object placing table and a rotary supporting ring which are arranged on the detection mounting seat, and a probe adapter mounted on the rotary supporting ring, one end of the probe adapter is connected with a buffer bottle through a hose, and the other end of the probe adapter is connected with an air cylinder; through cooperation of the transverse moving assembly and the lifting lead screw, two-degree-of-freedom adjustment of the probe adapter in the horizontal direction and the vertical direction is achieved, the imaging stability is ensured, and the problem of motion artifacts caused by focal plane variation of a traditional device is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of animal detection technology, specifically to a fixation device for detecting live small animals. Background Technology

[0002] In common biological research, it is necessary to monitor the physiological indicators of small animals (such as blood pressure and heart rate), administer drugs or take samples, and observe the animal's behavioral responses, such as conditioned reflexes, learning and memory. It is necessary to keep the animal alive to reduce the interference of vital signs on the experiment. In minimally invasive surgery or organ manipulation, fixation devices are needed to stabilize the animal's position, thereby reducing the difficulty of the surgery and the risk of tissue damage. To address the aforementioned problems, Chinese Patent Publication No. CN218106140U discloses a fixation device for detecting live small animals, comprising: a chassis for fixing the moving small animal; a support assembly disposed on the chassis; a suction cup assembly disposed at the end of the support assembly and above the chassis, the suction cup assembly including a suction cup and a glass slide, the suction cup having an adsorption hole and a first airway communicating with the adsorption hole, the first airway being connected to a negative pressure device; a glass slide disposed above the adsorption hole and sealing the upper end of the adsorption hole; the lower end of the adsorption hole for adsorbing the submandibular gland of the live small animal, and making the submandibular gland adhere to the lower surface of the glass slide; and a microscope disposed above the glass slide. This application solves the problem in related technologies where, during the detection of the submandibular gland of a live small animal, the animal's respiration and heartbeat cause continuous changes in the focal plane, resulting in motion artifacts that seriously affect the accurate recording and evaluation of mitochondrial morphology, movement, and function. In the above scheme, a negative pressure suction cup is used to adsorb the minimally invasive tissues and organs of a small animal in a living state into the adapter. The adapter is then placed under a microscope for easy observation. In common biological experiments, due to the limited imaging range of the microscope, it is often necessary to slowly shift the object of observation to more comprehensively verify and obtain data. Therefore, we propose a fixation device for live small animal detection. Summary of the Invention

[0003] The purpose of this invention is to provide a fixation device for the detection of live small animals, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a fixing device for detecting live small animals, comprising a base, a negative pressure control host mounted on the base, pedals and buffer bottles disposed on both sides of the negative pressure control host, and a flexible hose for connecting the pedals, buffer bottles and negative pressure control host, and further comprising a mounting platform, wherein a detection mechanism is disposed on the mounting platform, the detection mechanism comprising a detection mounting seat disposed on the mounting platform, a placement platform and a rotating support ring disposed on the detection mounting seat, and a probe adapter disposed on the rotating support ring, wherein one end of the probe adapter is connected to the buffer bottle via a flexible hose.

[0005] In some embodiments, a rotating chuck is fixed to the bottom of the platform, the rotating chuck rotates in cooperation with the bottom detection mounting base, and a chuck spring is provided between the rotating chuck and the detection mounting base.

[0006] In some embodiments, the mounting platform is provided with mounting holes, and the number of mounting holes is set to a plurality of them. The plurality of mounting holes are distributed on the mounting platform in a rectangular shape with equal spacing. Quick-release components are provided at the four corners of the detection mounting base, and the detection mounting base is connected to the mounting platform through the quick-release components.

[0007] In some embodiments, the quick-release assembly includes a quick-release knob, a quick-release screw fixed to the bottom of the quick-release knob, and an anti-detachment ring disposed between the quick-release knob and the quick-release screw. The anti-detachment ring is slidably connected to the upper half of the quick-release screw, and the quick-release screw is threadedly connected to a mounting hole.

[0008] In some embodiments, the detection mounting base has concave grooves on both sides, and a transverse component is provided at the front end of the detection mounting base. The transverse component includes a sliding rod, a crossbar screw hole opened on the sliding rod, convex connecting rods symmetrically fixed on both sides of the sliding rod, and a lifting connecting block fixed on the convex connecting rod. The convex connecting rod cooperates with the concave groove to slide.

[0009] In some embodiments, a transverse sliding screw is provided on the transverse screw hole, the transverse sliding screw is threadedly connected to the detection mounting base, and a transverse sliding spring is provided between the sliding rod and the detection mounting base, the transverse sliding spring being sleeved on the transverse sliding screw.

[0010] In some embodiments, lifting connecting blocks are fixed on both sides of the rotating support ring, and lifting screws are provided between the lateral component and the lifting connecting blocks on the same side of the rotating support ring. The lifting connecting blocks are threadedly connected to the lifting screws, and a rotating knob is fixed on the top of the lifting screws.

[0011] In some embodiments, the convex connecting rod is an elastic metal block, and the convex connecting rod and its upper lifting connecting block can undergo elastic deformation.

[0012] In some embodiments, the probe adapter includes an upper connecting sleeve, a lower connecting sleeve, a negative pressure connecting rod symmetrically arranged between the upper connecting sleeve and the lower connecting sleeve, and a negative pressure probe fixed on the lower connecting sleeve. The lower connecting sleeve is bent at an angle, and the air passages of the negative pressure probe, the negative pressure connecting rod, and the hose are connected.

[0013] In some embodiments, each end of the negative pressure connecting rod is provided with a rod connecting sleeve, which slides in cooperation with the upper connecting sleeve and the lower connecting sleeve. Each rod connecting sleeve on the same side is provided with a clamping spring rod, the end of which is fixed to the corresponding rod connecting sleeve.

[0014] In some embodiments, a sliding block is provided on the rotating support ring, the sliding block slides in cooperation with the rotating support ring, the sliding block is made of rubber, and the sliding block is elastically engaged with the negative pressure connecting rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves dual-degree-of-freedom adjustment of the probe adapter in both horizontal and vertical directions through the synergy of the transverse component and the lifting screw. The transverse screw, in conjunction with the transverse spring, not only drives the sliding rod to move precisely, but also enhances the thread locking effect through the spring force, preventing slippage after adjustment. The lifting screw, through the elastic deformation characteristics of the elastic convex connecting rod and the lifting connecting block, allows the probe adapter to adapt to the tilt angle and meet the clamping requirements of different tissue surfaces, improving the accuracy of target tissue positioning during detection. At the same time, combined with the rotating chuck structure of the stage and the detection mounting base, the spring buffer reduces the stress movement of small animals during negative pressure adsorption, ensuring imaging stability and effectively solving the motion artifact problem caused by focal plane changes in traditional devices.

[0016] 2. The detection mechanism of this invention can be quickly connected to the mounting platform via quick-release components. The combination design of quick-release knob, anti-detachment ring, and quick-release screw enables tool-free disassembly and assembly of the detection mounting base. The anti-detachment ring prevents the screw from being lost, significantly reducing the time required for maintenance or replacement of parts. The probe adapter adopts a detachable sliding block and elastic negative pressure connecting rod structure. The adapter can be quickly installed or removed by manually squeezing the negative pressure connecting rod. The elasticity of the clamping spring rod ensures a stable engagement between the adapter and the sliding block. Combined with the bending design of the lower connecting sleeve, and the ability to replace the lower connecting sleeve at different angles, it adapts to the need for rapid adjustment of tissue clamping angle in different experimental scenarios, improving equipment adaptability, simplifying the operation process, and significantly improving experimental efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the detection mechanism structure of the present invention; Figure 3This is a schematic diagram showing the position of the chuck spring in this invention; Figure 4 This is an exploded view of the detection mechanism structure of the present invention; Figure 5 This is a schematic diagram of the transverse movement component structure of the present invention; Figure 6 For the present invention Figure 4 Enlarged view of the structure at point A in the middle; Figure 7 This is a schematic diagram of the installation position of the anti-detachment ring of the present invention; Figure 8 This is a partial cross-sectional view of the probe adapter of the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 1. Negative pressure control unit; 2. Pedal; 3. Hoses; 4. Base; 5. Buffer bottle; 6. Microscope; 7. Detection mechanism; 8. Mounting platform; 9. Probe adapter; 10. Lifting connecting block; 11. Lifting screw; 12. Rotating knob; 13. Placement platform; 14. Rotating support ring; 15. Detection mounting base; 16. Mounting hole; 17. Sliding block; 18. Quick release assembly; 19. Lateral screw; 21. Lateral spring; 22. Rotating chuck; 23. Chuck spring; 24. Lateral assembly; 25. Sliding rod; 26. Convex connecting rod; 27. Crossbar screw hole; 28. Quick release knob; 29. ​​Anti-detachment ring; 30. Quick release screw; 31. Concave sliding groove; 32. Upper connecting sleeve; 33. Lower connecting sleeve; 34. Negative pressure probe; 35. Negative pressure connecting rod; 36. Clamping spring rod; 37. Rod connecting sleeve. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention provides a technical solution: such as Figures 1-8The fixture shown is for testing live small animals and includes a base 4, a negative pressure control host 1 and a microscope 6 mounted on the base 4, pedals 2 and buffer bottles 5 on both sides of the negative pressure control host 1, and a hose 3 for connecting the pedals 2, the buffer bottles 5 and the negative pressure control host 1. The microscope 6 is provided with a mounting platform 8, and the mounting platform 8 is provided with a testing mechanism 7. The testing mechanism 7 includes a testing mounting seat 15 on the mounting platform 8, a placement stage 13 and a rotating support ring 14 on the testing mounting seat 15, and a probe adapter 9 mounted on the rotating support ring 14. One end of the probe adapter 9 is connected to the buffer bottle 5 through the hose 3. The base 4 serves as the supporting foundation for the entire device, bearing the negative pressure control host 1, microscope 6, and other components, ensuring structural stability. It provides a stable platform through rigid materials (such as metal or high-strength plastic), distributing the weight of the equipment and preventing shaking during operation. The negative pressure control host 1 generates and adjusts negative pressure to provide suction force for the probe adapter 9. It has a built-in vacuum pump or negative pressure generator and controls the output pressure through the pedal 2. When the pedal 2 is operated, the host adjusts the airflow intensity and the negative pressure is transmitted to the probe adapter 9 through the hose 3. The pedal 2 manually adjusts the output pressure of the negative pressure control unit 1, and the pedaling force controls the opening and closing of the valve inside the unit, thereby adjusting the negative pressure in the hose 3 to achieve stepless pressure regulation to adapt to the adsorption needs of different tissues. The buffer bottle 5 stabilizes the negative pressure airflow and prevents pressure fluctuations from damaging the tissue. As an airflow transfer station, it absorbs the pulsed airflow output by the negative pressure control host 1 and outputs a stable airflow to the probe adapter 9 to ensure uniform adsorption force. The flexible hose 3 connects the various components and transmits negative pressure airflow. The flexible material (such as silicone or PVC) hose 3 connects the air paths of the negative pressure control host 1, buffer bottle 5, and probe adapter 9 to form a closed negative pressure system. Microscope 6 observes fixed tissues, records morphological and functional changes, magnifies tissue images through objective lenses and eyepieces, fixes samples with a stage (slide), and monitors in real time with imaging equipment (such as a CCD camera); The mounting platform 8 fixes the detection mechanism 7 and provides adjustment space. Rectangular equally spaced mounting holes 16 are opened on the surface. It is connected to the detection mounting base 15 through quick-release component 18, and supports multi-position installation to adapt to different experimental needs. A rotating chuck 22 is fixed at the bottom of the shelf 13. The rotating chuck 22 rotates in cooperation with the bottom detection mounting base 15. A chuck spring 23 is provided between the rotating chuck 22 and the detection mounting base 15. The mounting platform 8 has mounting holes 16, and the number of mounting holes 16 is set to a certain extent. The mounting holes 16 are distributed in a rectangular shape at equal intervals on the mounting platform 8. The four corners of the detection mounting base 15 are provided with quick-release components 18, and the detection mounting base 15 is connected to the mounting platform 8 through the quick-release components 18. The quick-release assembly 18 includes a quick-release knob 28, a quick-release screw 30 fixed to the bottom of the quick-release knob 28, and an anti-detachment ring 29 disposed between the quick-release knob 28 and the quick-release screw 30. The anti-detachment ring 29 is slidably connected to the upper half of the quick-release screw 30, and the quick-release screw 30 is threadedly connected to the mounting hole 16. The quick-release assembly 18 includes a quick-release knob 28, a quick-release screw 30, and an anti-disengagement ring 29, enabling tool-free quick assembly and disassembly of the detection mechanism 7. The quick-release screw 30 is threaded into the mounting hole 16 of the mounting platform 8. Rotating the quick-release knob 28 can lock or disassemble the mechanism. The anti-disengagement ring 29 slides and engages with the upper half of the quick-release screw 30 to prevent the screw from being lost and improve operational efficiency. The detection mounting base 15 has concave grooves 31 on both sides and a transverse component 24 at the front end. The transverse component 24 includes a sliding rod 25, a crossbar screw hole 27 on the sliding rod 25, convex connecting rods 26 symmetrically fixed on both sides of the sliding rod 25, and a lifting connecting block 10 fixed on the convex connecting rod 26. The convex connecting rod 26 slides in cooperation with the concave grooves 31. A transverse screw 19 is provided on the transverse screw hole 27. The transverse screw 19 is threadedly connected to the detection mounting base 15. A transverse spring 21 is provided between the sliding rod 25 and the detection mounting base 15. The transverse spring 21 is sleeved on the transverse screw 19. Lifting connecting blocks 10 are fixed on both sides of the rotating support ring 14. Lifting screws 11 are provided between the horizontal moving component 24 and the lifting connecting blocks 10 on the same side of the rotating support ring 14. The lifting connecting blocks 10 and the lifting screws 11 are threadedly connected. A rotating knob 12 is fixed on the top of the lifting screws 11. Rotate the support ring 14 to support the probe adapter 9 and allow angle adjustment. Fix the lifting connecting blocks 10 on both sides and thread them with the lifting screw 11. Adjust the lifting screw 11 by rotating the knob 12 to change the distance between the lifting connecting blocks 10 on both sides, thereby realizing the lifting and tilting angle adjustment of the support ring. The convex connecting rod 26 is an elastic metal block. The convex connecting rod 26 and its upper lifting connecting block 10 can produce elastic deformation. The convex connecting rod 26 is an elastic metal, which allows the two ends to adapt to the height difference. It works with the lifting screw 11 to achieve multi-dimensional adjustment. The lifting screw 11 and the rotating knob 12 adjust the height and tilt angle of the probe adapter 9. The rotating knob 12 drives the lifting screw 11 to rotate, changing the distance between the two lifting connecting blocks 10, and driving the rotating support ring 14 to rise and fall. The elastic convex connecting rod 26 allows the support ring to tilt, adapting to the clamping requirements of different tissue surfaces. The detection mechanism 7 includes a detection mounting base 15, a platform 13, a rotating support ring 14, and a probe adapter 9. It integrates positioning, adjustment, and adsorption functions to achieve precise fixation and observation of the target tissue. The detection mounting base 15 supports the platform 13, the rotating support ring 14, and the transverse component 24, providing structural support. Concave grooves 31 are opened on both sides, which cooperate with the convex connecting rod 26 to realize the sliding of the transverse component 24. The front transverse component 24 is adjusted in front and back position by transverse screw 19 and transverse spring 21. The four corner quick-release components 18 realize quick connection with the mounting platform 8. The platform 13 and the rotating chuck 22 support the small animal and allow moderate rotation. The negative pressure probe 34 is used to adjust the body position. The rotating chuck 22 is fixed at the bottom of the platform 13 and rotates with the detection mounting base 15. The chuck spring 23 provides rotation buffer. During negative pressure adsorption, the spring buffer reduces the stress movement of the small animal. After adsorption, the spring support force balances the negative pressure suction force and enhances stability. The probe adapter 9 includes an upper connecting sleeve 32, a lower connecting sleeve 33, a negative pressure connecting rod 35 symmetrically arranged between the upper connecting sleeve 32 and the lower connecting sleeve 33, and a negative pressure probe 34 fixed on the lower connecting sleeve 33. The lower connecting sleeve 33 is bent at an angle, and the air passages of the negative pressure probe 34, the negative pressure connecting rod 35 and the hose 3 are connected. The probe adapter 9 includes an upper connecting sleeve 32, a lower connecting sleeve 33, a negative pressure connecting rod 35, a negative pressure probe 34, and a clamping spring rod 36. It directly contacts the tissue, transmits negative pressure, and fixes the target. The negative pressure probe 34 fits the tissue surface through the bending design of the lower connecting sleeve 33. The negative pressure connecting rod 35 is connected to the air passage of the tubing 3 to form an adsorption force. By manually pinching the negative pressure connecting rods 35 on both sides, the clamping spring rod 36 is compressed, causing the rod connecting sleeve 37 to slide between the upper connecting sleeve 32 and the lower connecting sleeve 33, achieving elastic engagement with the sliding block 17. The rubber sliding block 17 provides friction. By changing the lower connecting sleeve 33 with different bending angles, the clamping angle between the negative pressure probe 34 and the tissue can be quickly adjusted. The negative pressure connecting rod 35 is provided with a rod connecting sleeve 37 at each end. The rod connecting sleeve 37 slides with the upper connecting sleeve 32 and the lower connecting sleeve 33. A clamping spring rod 36 is provided between the rod connecting sleeves 37 on the same side. The end of the clamping spring rod 36 is fixed on the corresponding rod connecting sleeve 37. A sliding block 17 is provided on the rotating support ring 14. The sliding block 17 slides in cooperation with the rotating support ring 14. The sliding block 17 is made of rubber and is elastically engaged with the negative pressure connecting rod 35. The sliding block 17 fixes the probe adapter 9 and allows manual fine-tuning of its position. The sliding block 17 slides in conjunction with the rotating support ring 14. The rubber material maintains a stable position through its own weight and friction. The horizontal position of the probe adapter 9 can be adjusted by manually pushing the sliding block 17 to adapt to the imaging range requirements of the microscope 6. The transverse component 24 includes a sliding rod 25, a convex connecting rod 26, a transverse screw 19, and a transverse spring 21, which realizes the forward and backward adjustment of the probe adapter 9 in the horizontal direction. Rotating the transverse screw 19 drives the sliding rod 25 to move along the concave slide groove 31. The transverse spring 21 provides the friction force of the thread tooth surface to achieve self-locking after displacement. Install the detection mechanism 7 onto the mounting platform 8 using the quick-release assembly 18, place the small animal on the shelf 13, rotate the shelf 13, and adjust the horizontal or vertical movement assembly to align the probe adapter 9 with the target tissue. Operate the pedal 2 to activate negative pressure, and the negative pressure probe 34 will adsorb the tissue and adhere to the slide. Adjust the focal length of the microscope 6, and fine-tune the probe position using the sliding block 17 to achieve multi-area imaging. Quickly disassemble the detection mechanism 7 or the probe adapter 9 to replace parts to adapt to different experimental needs. By combining mechanical adjustment with elastic buffering, the problems of low positioning accuracy and complex operation of traditional devices are solved, significantly improving the stability and efficiency of liveness detection. When the device is in operation, the small animal is first placed on the platform 13. The probe adapter 9 is used to attach to the minimally invasive tissue area of ​​the small animal that needs to be observed. The pedal 2 is controlled to adjust the negative pressure control host 1. Then, the negative pressure is transmitted to the probe adapter 9 through the buffer bottle 5 and the hose 3. The negative pressure connecting rod 35 and the negative pressure probe 34 have the same air path as the hose 3. The front end of the negative pressure probe 34 sucks up the target tissue or organ, and then the microscope 6 is used for observation. To facilitate the clamping of the target tissue by the probe adapter 9, since the sliding block 17 is made of rubber, the probe adapter 9 can be detached from the sliding block 17 and then reinstalled on the sliding block 17 after clamping. During detachment and installation, the negative pressure connecting rod 35 is manually squeezed inward, causing the negative pressure connecting rods 35 on both sides to retract inward, which in turn drives the rod connecting sleeves 37 at both ends of the negative pressure connecting rod 35 to slide on the upper connecting sleeve 32 and the lower connecting sleeve 33, and compresses the clamping spring rod 36. During installation, under the elastic force of the clamping spring rod 36, the two negative pressure connecting rods 35 expand outward and engage with the grooves on the sliding block 17. Since the friction between the rubber block and the negative pressure connecting rod 35 is relatively large, the sliding tendency of the negative pressure connecting rod 35 can be limited to a certain extent. When the detection range needs to be adjusted, the lifting screw 11 is rotated by adjusting the rotating knob 12 to adjust the distance between the two lifting connecting blocks 10, thereby adjusting the height of the rotating support ring 14 and ultimately achieving the height adjustment of the negative pressure probe 34. Since the convex connecting rod 26 is made of elastic material, the lifting connecting blocks 10 at both ends can be adaptively adjusted to different heights to achieve the plane angle deflection of the negative pressure probe 34, improve the flexibility of the probe, and better grasp the target tissue. By rotating the transverse screw 19, the transverse assembly 24 can be offset back and forth relative to the detection mounting base 15. The transverse spring 21 can both drive the transverse screw 19 to fit tightly against the transverse bolt to achieve the effect of forward and backward offset, and also provide elastic force after the transverse bolt rotates with the thread of the detection mounting base 15 to increase the contact stress between the thread teeth, increase the friction, and provide a locking effect for the transverse bolt, ultimately achieving the effects of forward and backward offset and locking after offset. The small animal is placed on the platform 13, which is rotatably connected to the detection mounting base 15. When the small animal is gripped by the negative pressure probe 34, it can rotate to facilitate gripping by the negative pressure probe 34. The function of the chuck spring 23 is to provide rotational support between the platform 13 and the detection mounting base 15. It can also form a certain relative pressure between itself and the downward pressure of the negative pressure probe 34 when the negative pressure probe 34 grips the tissue, making gripping easier. After gripping, when the negative pressure suction is upward, it can also provide a certain support force for the small animal, improving the stability of the device. The lower connecting sleeve 33 is bent at a certain angle to facilitate the negative pressure probe 34 to grasp the target tissue. When conducting different experiments, the angle between the negative pressure probe 34 and the target tissue can be quickly adjusted by replacing the lower connecting sleeve 33 to facilitate the negative pressure probe 34 to grasp the target. The test mounting base 15 is connected to the mounting hole 16 on the mounting platform 8 via the quick-release assembly 18. When it is necessary to maintain the test mechanism 7, the test mechanism 7 can be quickly disassembled. The anti-detachment ring 29 is movable and locked on the quick-release bolt. When the test mounting base 15 is not connected, the quick-release bolt can be locked on the test mounting base 15 to prevent it from being lost in the test chamber. It can also be quickly installed when connected to improve experimental efficiency. The sliding block 17 can slide relative to the rotating support ring 14. When the position of the probe adapter 9 needs to be adjusted, the sliding block 17 can be manually rotated. After the adjustment is completed, due to the weight of the sliding block 17 itself and the characteristics of the rubber material, the sliding block 17 and the rotating support ring 14 can remain fixed.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing device for detecting live small animals, comprising a base (4), a negative pressure control host (1) mounted on the base (4), pedals (2) and buffer bottles (5) disposed on both sides of the negative pressure control host (1), and a flexible hose (3) for connecting the pedals (2), the buffer bottles (5) and the negative pressure control host (1), characterized in that: It also includes an installation platform (8), on which a detection mechanism (7) is provided. The detection mechanism (7) includes a detection mounting base (15) on the installation platform (8), a shelf (13) on the detection mounting base (15), and a rotating support ring (14), and a probe adapter (9) installed on the rotating support ring (14). One end of the probe adapter (9) is connected to the buffer bottle (5) through a hose (3).

2. The fixation device for live small animal detection according to claim 1, characterized in that: The bottom of the platform (13) is fixed with a rotating chuck (22), which rotates in cooperation with the bottom detection mounting base (15). A chuck spring (23) is provided between the rotating chuck (22) and the detection mounting base (15).

3. The fixation device for live small animal detection according to claim 1, characterized in that: The mounting platform (8) is provided with mounting holes (16), and the number of mounting holes (16) is set to a certain extent. The mounting holes (16) are distributed in a rectangular shape at equal intervals on the mounting platform (8). The four corners of the detection mounting base (15) are provided with quick-release components (18), and the detection mounting base (15) is connected to the mounting platform (8) through the quick-release components (18).

4. The fixation device for live small animal detection according to claim 3, characterized in that: The quick-release assembly (18) includes a quick-release knob (28), a quick-release screw (30) fixed to the bottom of the quick-release knob (28), and an anti-detachment ring (29) disposed between the quick-release knob (28) and the quick-release screw (30). The anti-detachment ring (29) is slidably connected to the upper half of the quick-release screw (30), and the quick-release screw (30) is threadedly connected to the mounting hole (16).

5. The fixation device for live small animal detection according to claim 1, characterized in that: The detection mounting base (15) has concave grooves (31) on both sides. The front end of the detection mounting base (15) is provided with a transverse component (24). The transverse component (24) includes a sliding rod (25), a crossbar screw hole (27) opened on the sliding rod (25), a convex connecting rod (26) symmetrically fixed on both sides of the sliding rod (25), and a lifting connecting block (10) fixed on the convex connecting rod (26). The convex connecting rod (26) slides in cooperation with the concave groove (31).

6. The fixation device for live small animal detection according to claim 5, characterized in that: A transverse screw (19) is provided on the transverse screw hole (27), the transverse screw (19) is threadedly connected to the detection mounting base (15), and a transverse spring (21) is provided between the sliding rod (25) and the detection mounting base (15), the transverse spring (21) is sleeved on the transverse screw (19).

7. The fixation device for live small animal detection according to claim 5, characterized in that: Lifting connecting blocks (10) are fixed on both sides of the rotating support ring (14). Lifting screws (11) are provided between the horizontal moving component (24) and the lifting connecting blocks (10) on the same side of the rotating support ring (14). The lifting connecting blocks (10) and the lifting screws (11) are threadedly connected. A rotating knob (12) is fixed on the top of the lifting screws (11).

8. The fixation device for live small animal detection according to claim 5, characterized in that: The convex connecting rod (26) is an elastic metal block, and the convex connecting rod (26) and its upper lifting connecting block (10) can produce elastic deformation.

9. The fixation device for detecting live small animals according to claim 1, characterized in that: The probe adapter (9) includes an upper connecting sleeve (32), a lower connecting sleeve (33), a negative pressure connecting rod (35) symmetrically arranged between the upper connecting sleeve (32) and the lower connecting sleeve (33), and a negative pressure probe (34) fixed on the lower connecting sleeve (33). The lower connecting sleeve (33) is bent at an angle, and the air passages of the negative pressure probe (34), the negative pressure connecting rod (35) and the hose (3) are connected.

10. The fixation device for detecting live small animals according to claim 9, characterized in that: The negative pressure connecting rod (35) is provided with a rod connecting sleeve (37) at its end. The rod connecting sleeve (37) slides with the upper connecting sleeve (32) and the lower connecting sleeve (33). A clamping spring rod (36) is provided between the rod connecting sleeves (37) on the same side. The end of the clamping spring rod (36) is fixed on the corresponding rod connecting sleeve (37).

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