Rabbit ear edge intravenous injection assist device

Abstract

The invention belongs to the technical field of medical technology, and discloses a rabbit ear edge intravenous injection assist device which comprises a transparent bottom plate, and the bottom end of the bottom plate is provided with an illumination assembly for assisting illumination development; the fixing assembly comprises ear clamps movably connected to the two sides of the bottom plate, when the fixing assembly is used, the two ear clamps are clamped to the proximal end and the telecentric end of a rabbit ear respectively, and the bottom plate is attached to the rabbit ear. The developing assembly comprises two vascular clamps movably arranged on the bottom plate, and during auxiliary injection, the two vascular clamps are clamped on the two sides of a rabbit ear injection point to assist development of rabbit ear veins; the adjusting assembly comprises a fixing pin movably arranged on the bottom plate, and the end of the vascular clamp is fixed to the bottom plate through the fixing pin. The device is simple in structure and convenient to use, effectively improves the display definition of ear edge veins, improves the accuracy of rabbit ear intravenous injection, enhances the operation convenience, improves the experiment efficiency and success rate, shortens the operation time, avoids accidentally injuring operators, guarantees the welfare of experimental animals, and is convenient to popularize and apply.

Description

Technical Field

[0001] The invention relates to the technical field of medical technology, and in particular to a rabbit ear vein injection assistant. Background Art

[0002] Rabbits are one of the most important experimental animals in pharmacology experimental teaching and research, and ear vein injection or blood drawing is the most commonly used method for drug administration or blood collection in rabbits. Existing methods of drawing blood or injecting drugs from rabbit ear veins are performed by an operator who fixes the rabbit's ear with one hand and uses four fingers of the left hand except the little finger to perform the operation, which is difficult to operate, especially for beginners. When medical students perform ear vein injection in rabbits, the vein display is not good enough, and beginners have poor control over the injection needle and often cannot accurately pierce the vein.

[0003] The existing fixing device is too simple. The rabbit's ears are stretched and fixed on the stretching board by ear clips, which can only stretch the rabbit's ears. The visualization effect of blood vessels is poor and there is a lack of fixation for the injection needle. Beginners have poor control over the injection needle and cannot accurately insert the vein. The ear vein may also be clamped, resulting in failure to complete intravenous injection.

[0004] Therefore, the present application discloses a rabbit ear vein injection aid to solve the above-mentioned technical problems. Summary of the invention

[0005] The purpose of the invention is to provide a rabbit ear vein injection assistant to solve the problems existing in the prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a rabbit ear vein injection aid, comprising:

[0007] A bottom plate, the bottom plate is transparent, and when in use, the bottom plate is attached to the rabbit ears to stretch the rabbit ears, and a lighting component for auxiliary lighting and development is provided at the bottom end of the bottom plate;

[0008] A fixing assembly, the fixing assembly comprising ear clips movably connected to both sides of the bottom plate, wherein the two ear clips are respectively clamped on the proximal end and the distal end of the rabbit ear to fit the bottom plate on the rabbit ear;

[0009] A developing assembly, the developing assembly comprising two vascular clamps movably arranged on the bottom plate, and when assisting injection, the two vascular clamps are clamped on both sides of the rabbit ear injection point to assist in the development of the rabbit ear vein;

[0010] The adjusting component includes a fixing pin movably arranged on the bottom plate, and the fixing pin fixes the end of the vascular clamp on the bottom plate.

[0011] Preferably, a fixing hole corresponding to the fixing pin is formed on the bottom plate, and the fixing pin is movably connected in the fixing hole.

[0012] Preferably, a pressure spring is sleeved on the fixing pin, the top end of the pressure spring is fixedly connected to the positioning cap at the top end of the fixing pin, and the bottom end of the pressure spring is fixedly connected to the top surface of the ear clip.

[0013] Preferably, an annular groove surrounding the fixing pin is formed at the top of the ear clip, a connecting ring coaxially arranged with the fixing pin is rotatably connected in the annular groove, the top of the connecting ring extends out of the annular groove, and the bottom end of the pressure spring is fixedly connected to the top of the connecting ring.

[0014] Preferably, the lighting assembly comprises a lighting groove opened at the bottom end of the base plate, and a plurality of lighting lamps for lighting are arranged in an array in the lighting groove.

[0015] Preferably, a fixing tube is provided through the bottom plate, movable rods are slidably inserted at both ends of the fixing tube, and the ear clip is movably provided on the movable rods.

[0016] Preferably, a plurality of elastically arranged locking plates are respectively provided at both ends of the fixing tube, and the plurality of locking plates surround and fit around the outer wall of the movable rod; a locking nut is respectively threadedly connected to the two ends of the fixing tube, and the locking nut presses the locking plate to lock the movable rod.

[0017] Preferably, a contact groove is provided on the contact surface between the vascular clamp and the rabbit ear, a contact plate is movably connected in the contact groove, a measuring spring is fixedly connected to the side of the contact plate away from the rabbit ear, the measuring spring extends into a measuring groove provided at the bottom end of the contact groove, and the measuring spring is fixedly connected to the measuring surface of a pressure sensor arranged in the contact groove.

[0018] Preferably, a plurality of guide holes are formed at the bottom end of the measuring slot, and guide rods are slidably connected in the guide holes. The guide rods extend out of the guide slot and are fixedly connected to an end of the contact plate away from the rabbit ears.

[0019] Preferably, a contact sheet is provided in a flexible manner on the contact surface of the contact plate and the rabbit ear.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects: the present invention discloses a rabbit ear vein injection aid. When in use, the rabbit ear is fitted and stretched onto a bottom plate, and a lighting component on the bottom plate away from the rabbit ear shines on the rabbit ear through the transparent bottom plate, so that the light helps to display the operation field of view and highlight the ear vein on the rabbit ear, thereby more accurately locating the injection point and reducing the injection error caused by obstructed vision or difficult to identify blood vessels; the two ear clips of the fixing component are respectively connected to the two sides of the bottom plate, and can be conveniently clamped at the proximal end and the distal end of the rabbit ear, so that the bottom plate is stably fitted on the rabbit ear, the operation steps are simplified, and the convenience of operation is improved; the two blood The tube clamp is fixed to the bottom plate with the assistance of the fixing pin, and can be clamped on both sides of the rabbit ear injection point during the auxiliary injection, and assists the visualization of the rabbit ear vein through physical compression or specific design, thereby reducing the time for finding the blood vessel and improving the injection efficiency; and after the intravenous infusion needle is stably inserted into the rabbit ear vein, the blood vessel clamp can be loosened to fix the intravenous infusion needle, which is beneficial in subsequent operations. If the ear vein injection is to be performed, there is no need to perform another puncture operation, shortening the operation time and reducing the pain of the rabbit; the adjustment component is arranged on the fixing pin, and the clamping strength of the blood vessel clamp on the rabbit ear can be adjusted, thereby reducing the discomfort of the rabbit ear on the basis of ensuring the visualization effect of the rabbit ears of different sizes.

[0021] The invention has a simple structure and is easy to use, and can effectively improve the display clarity of the ear vein, improve the accuracy of rabbit ear vein injection, enhance the convenience of operation, improve the experimental efficiency and success rate, shorten the operation time, avoid accidental injury to the operator, ensure the welfare of experimental animals, and facilitate promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 This is an axial view of the rabbit ear vein injection assistant of the present invention;

[0024] Figure 2 It is a side view of the rabbit ear vein injection assistant of the present invention;

[0025] Figure 3 This is a schematic diagram of the fixing pin structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the vascular clamp of the present invention;

[0027] Figure 5 For the present invention Figure 4 A partial enlarged view of middle A;

[0028] Figure 6 For the present invention Figure 4 A partial enlarged view of B in the middle;

[0029] Figure 7 It is a schematic diagram of the locking nut of the present invention;

[0030] In the figure: 1. base plate; 2. ear clip; 3. blood vessel clip; 4. fixing pin; 5. fixing hole; 6. positioning cap; 7. pressure spring; 8. annular groove; 9. connecting ring; 10. ball; 11. lighting groove; 12. lighting lamp; 13. control switch; 14. fixing tube; 15. movable rod; 16. locking plate; 17. locking nut; 18. contact groove; 19. contact plate; 20. measuring spring; 21. measuring groove; 22. pressure sensor; 23. guide hole; 24. guide rod; 25. contact plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Medical students often need to inject drugs or anesthesia into the ear vein when conducting rabbit experiments. However, this injection technique is difficult to master, which results in students spending a long time in the experiment, with a low success rate, and the risk of being scratched by rabbits. The ear vein injection will hardly be used again in the future careers of many students. It is a skill that must be mastered and does not require a lot of effort to practice. Therefore, the present invention aims to design an auxiliary device to improve the filling degree of the ear vein, improve the display clarity of the ear vein, reduce the difficulty of ear vein operation, improve the success rate of rabbit ear vein injection, and reduce the risk of operator injury.

[0033] The existing patent number CN202222236558.2 discloses a rabbit box for experimental rabbit ear vein injection, including: a box body, a strip guard and a light source assembled inside the strip guard.

[0034] The box body includes a bottom plate, and a first baffle, a second baffle and two third baffles of the same shape and mirror-arranged are arranged above the bottom plate. The width of the first baffle and the second baffle is the same as the width of the bottom plate, and the length of the third baffle is the same as the length of the bottom plate.

[0035] Specifically, the second baffle is perpendicular to the bottom plate and is located in front of the bottom plate. Two identical third baffles are respectively placed on the bottom plate on both sides of the second baffle, and are both perpendicular to the bottom plate. The bottom edge of the first baffle is fixed to the upper edge of the second baffle, and the first baffle is inclined toward the side where the third baffle is installed, and the angle with the bottom plate is acute. At the same time, the upper edges of the first baffle and the two third baffles, and the places where the bottom edges of the second baffle and the two third baffles are connected to the bottom plate are all rounded to improve the safety of the device.

[0036] A strip-shaped hand guard is provided on the first baffle plate at the upper front of the box body, and a light source fixing port and a shading plate connecting port are provided at both ends of the strip-shaped hand guard. A light source is provided inside the strip-shaped hand guard, and the light source can be an LED light strip. Two parallel raised columns are fixed on the upper edge of the first baffle plate, and the raised columns are connected with the shading plate connecting port, so that the strip-shaped hand guard can be connected to the box body.

[0037] The strip handguard is made of a transparent and elastic material, which is bendable, light-permeable and breathable, with a height of 310mm, a length of 10-15mm and a width of 15-20mm. The interior of the strip handguard between the light source fixing port and the sunshade connecting port is a strip-shaped cavity, which can be used as a light source placement position to place an LED light strip as a light source; the two side walls of the strip handguard are provided with air holes, which improve the air permeability. The air holes include multiple parallelogram and short strip-shaped gaps, which ensure the air permeability effect without reducing the stability of the strip handguard.

[0038] Grab the rabbit and put it into the box, with the rabbit head placed just below the first baffle and the rabbit ears sticking out of the box from above the first baffle. Aim the light source at the light source fixing opening of the strip guard and push it in with a little force. Since the strip guard is made of a transparent elastic material, the light source fixing opening is in an expanded state due to the insertion of the light source. When the main body of the LED light bar as the light source has completely passed through the light source placement position, the seam of the light source fixing opening is retracted, the light source is connected with a power cord and the power is turned on, and the strip guard is fixed through the shading plate connection opening and the raised column under the rabbit ear to be injected.

[0039] Grab the rabbit ear and pad it on the strip guard; the operator's left hand fixes the rabbit ear and the strip guard, and uses the index finger and middle finger to clamp the rabbit ear and the strip guard together below the injection point to fill the rabbit ear blood vessels. The thumb and ring finger pinch the tip of the rabbit ear and the strip guard that fit together, and the ring finger and little finger are placed under the ear as a pad. The operator holds the injection needle in the right hand and inserts the needle into the rabbit's ear marginal vein at a 30° angle from the distal end, then goes parallel to the blood vessel and injects the drug solution. It is observed that the color of the blood vessel where the needle is inserted changes and the blood vessel becomes more transparent, that is, the drug solution is accurately injected into the blood vessel.

[0040] However, the protocol fully disclosed how to fix the rabbit's body, but did not fix or assist in visualizing the rabbit's ear vein. The rabbit's ear was simply fixed manually, which made it difficult to locate the blood vessels and inconvenient for puncture and injection.

[0041] Another patent number CN202323615252.9 discloses an auxiliary device for rabbit ear vein injection, including a base and a splint, the splint and the base are rotatably connected by a shaft, the shaft is connected to a torsion spring, and the torsion spring drives the splint and the base to clamp. The width of the orthographic projection of the splint on the base is smaller than the width of the base, a light-emitting heating module is embedded on the upper surface of the base, and a magnifying glass is connected to the middle of the splint away from the shaft through a flexible rod.

[0042] Furthermore, the clamping end of the splint is arc-shaped, and the clamping end is covered with a silicone soft cover, so that the splint and the rabbit ear are clamped more closely. Preferably, the flexible rod and the splint are detachably connected, such as plug-in connection or threaded connection, and can be disassembled or installed as needed, and a magnifying glass is connected through the flexible rod, and the angle of the magnifying glass is adjustable, so that the experimenter can adjust to a suitable angle to observe the blood vessels in the rabbit ear.

[0043] The light-emitting and heating module is provided with a power supply, and a pressure-sensitive switch is provided inside the light-emitting and heating module. The light-emitting and heating module is also provided with a temperature control unit, and the temperature control unit controls the temperature of the light-emitting and heating module to rise to within 39-42°C. In a specific embodiment, the light-emitting and heating module includes a light-emitting and heating plate, which is made of a heat-resistant and transparent material. A heating wire is provided at the bottom of the light-emitting and heating plate, and a plurality of LED lamp beads are provided on one side wall. The heating wire and the LED lamp beads are electrically connected to the power supply, and the temperature control unit is electrically connected to the heating wire. The electric heating wire is energized to generate heat to heat the light-emitting and heating plate, and the LED lamp beads are lit to light up the transparent light-emitting and heating plate. When the light-emitting and heating plate is heated to 39-42°C, the temperature control unit controls the heating wire to stop working.

[0044] The base is provided with a finger buckle groove, and the finger buckle groove is adjacent to the light-emitting and heating module, so as to facilitate buckling out the light-emitting and heating module embedded in the base.

[0045] The upper surface of the base is covered with a transparent heat-resistant silicone pad; the bottom of the base is provided with a magnetic block, which is convenient for mounting the base on the rabbit restraint board. Preferably, a handle is provided on the upper part of the base, which is convenient for separating the base from the rabbit restraint board with fingers. The shape of the base includes but is not limited to square, round, and oval, and the position of the switch is not limited to the base.

[0046] When using the device of the present invention, the operating steps are:

[0047] 1. Adsorb the base to the metal rabbit restraining board through the magnetic block, and clamp the rabbit's ears through the splint so that the rabbit's ear edge is directly above the light-emitting and heating module;

[0048] 2. The pressure-sensitive switch in the light-emitting and heating module senses the pressure, the light-emitting and heating module lights up, and starts to heat up;

[0049] 3. Adjust the position of the magnifying glass to magnify the blood vessel to be injected;

[0050] 4. Wait for a while, the light-emitting heating module will heat up to 39-42℃, the blood vessels at the edge of the rabbit's ear will expand due to the heat, and the light will pass through the translucent ear tissue of the rabbit, so the blood vessels can be clearly seen; insert the injection needle and start the injection.

[0051] However, this solution lacks adjustability and does not have a structure to assist in developing blood vessels, resulting in insufficient positioning effect.

[0052] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Reference Figure 1-Figure 7 As shown, this embodiment provides a rabbit ear vein injection aid, comprising:

[0054] A bottom plate 1 is transparent and is attached to the rabbit ears to stretch the rabbit ears when in use. A lighting component for auxiliary lighting and development is provided at the bottom end of the bottom plate 1;

[0055] A fixing component, the fixing component comprises ear clips 2 movably connected to both sides of the bottom plate 1. When in use, the two ear clips 2 are respectively clamped on the proximal end and the distal end of the rabbit ear, so that the bottom plate 1 is attached to the rabbit ear;

[0056] The developing component includes two vascular clamps 3 movably arranged on the bottom plate 1. When assisting injection, the two vascular clamps 3 are clamped on both sides of the injection point of the rabbit ear to assist in the development of the rabbit ear vein;

[0057] The adjusting component includes a fixing pin 4 movably arranged on the bottom plate 1 , and the fixing pin 4 fixes the end of the blood vessel clamp 3 on the bottom plate 1 .

[0058] The invention discloses a rabbit ear vein injection assistant. When in use, the rabbit ear is fitted and stretched on a bottom plate 1, and a lighting component on the bottom plate 1 away from the rabbit ear shines on the rabbit ear through the transparent bottom plate 1, so that the operation field of view is displayed by light, and the ear vein on the rabbit ear is highlighted, so that the injection point is more accurately located, and the injection error caused by the obstruction of vision or the difficulty in identifying the blood vessel is reduced; two ear clips 2 of the fixing component are respectively connected to the two sides of the bottom plate 1, and can be conveniently clamped at the proximal end and the distal end of the rabbit ear, so that the bottom plate 1 is stably fitted on the rabbit ear, the operation steps are simplified, and the convenience of operation is improved; two blood vessel clips 3 are assisted by the fixing pin 4 The lower part is fixed on the bottom plate 1, and can be clamped on both sides of the rabbit ear injection point during auxiliary injection, and the rabbit ear vein is assisted to develop through physical compression or specific design, which reduces the time of finding blood vessels and improves the injection efficiency; and after the intravenous infusion needle is stably inserted into the rabbit ear vein, the vascular clamp 3 can be loosened to fix the intravenous infusion needle, which is beneficial in subsequent operations. If the ear vein injection is to be performed, there is no need to perform another puncture operation, shortening the operation time and reducing the pain of the rabbit; the adjustment component is arranged on the fixed pin 4, and the clamping strength of the vascular clamp 3 on the rabbit ear can be adjusted, and the discomfort of the rabbit ear can be reduced on the basis of ensuring the development effect of the rabbit ears of different body shapes. The present invention has a simple structure and is easy to use, and can effectively improve the display clarity of the ear vein, improve the accuracy of rabbit ear vein injection, enhance the convenience of operation, improve the experimental efficiency and success rate, shorten the operation time, avoid accidental injury to the operator, ensure the welfare of experimental animals, and facilitate promotion and application.

[0059] In one embodiment of the present application, the material of the base plate 1 is selected to be a transparent lightweight material, such as plastic, which can ensure the light transmittance of the lighting component and improve the visualization effect of the rabbit ear blood vessels; at the same time, the lightweight material can also reduce the pressure effect on the rabbit ear, reduce the harm to the experimental rabbits, and improve the welfare of the experimental animals.

[0060] Further optimizing the scheme, a fixing hole 5 corresponding to the fixing pin 4 is provided on the bottom plate 1, and the fixing pin 4 is movably connected in the fixing hole 5. The fixing hole 5 is provided on the bottom plate 1 and corresponding to the fixing pin 4, and the fixing pin 4 passes through the vascular clamp 3 to fix the vascular clamp 3 on the bottom plate 1. At the same time, loosening the fixing pin 4 can loosen the vascular clamp 3, and the angle of the vascular clamp 3 can be rotated, so as to facilitate the adjustment of the position of the vascular clamp 3, which can be suitable for clamping and developing the ears of experimental rabbits of different body sizes, thereby enhancing the flexibility and adaptability of the auxiliary device.

[0061] In one embodiment of the present application, the vascular clamp 3 is made of stainless steel to facilitate sterilization and reuse.

[0062] In a further optimized solution, a pressure spring 7 is sleeved on the fixing pin 4, the top end of the pressure spring 7 is fixedly connected to the positioning cap 6 at the top end of the fixing pin 4, and the bottom end of the pressure spring 7 is fixedly connected to the top surface of the ear clip 2. By sleeved the pressure spring 7 on the fixing pin 4 and fixed by the positioning cap 6 and the connecting ring 9, the ear clip 2 can generate a certain pressure when fixed, ensuring that the rabbit ears are stably clamped, while avoiding damage to the rabbit ears due to over-tight clamping.

[0063] According to a further optimized solution, an annular groove 8 is provided at the top of the ear clip 2 and is arranged around the fixing pin 4. A connecting ring 9 coaxially arranged with the fixing pin 4 is rotatably connected in the annular groove 8. The top of the connecting ring 9 extends out of the annular groove 8, and the bottom end of the pressure spring 7 is fixedly connected to the top of the connecting ring 9. The annular groove 8 is provided at the top of the ear clip 2, and the connecting ring 9 is rotatably connected, so that the ear clip 2 can be fine-tuned relative to the fixing pin 4 when fixed, further improving the stability and accuracy of the fixation.

[0064] In one embodiment of the present application, the cross section of the annular groove 8 is set to be an inverted L-shape, and the connecting ring 9 is adapted to the annular groove 8 to prevent the connecting ring 9 from escaping from the annular groove 8.

[0065] In one embodiment of the present application, a plurality of balls 10 are disposed on the side wall of the annular groove 8 to reduce the friction between the annular groove 8 and the connecting ring 9 .

[0066] In one embodiment of the present application, the contact surface between the blood vessel clamp 3 and the bottom plate 1 is provided with mutually meshing grooves, which can prevent the blood vessel clamp 3 from rotating when being compressed.

[0067] Further optimization scheme, the lighting assembly includes a lighting groove 11 opened at the bottom end of the base plate 1, and a plurality of lighting lamps 12 for lighting are arranged in an array in the lighting groove 11. The lighting lamps 12 are arranged in the lighting groove 11, providing an additional light source, enhancing the visibility of the blood vessels, especially in an environment with insufficient light, which helps to improve the accuracy of injection; the array arrangement of a plurality of lighting lamps 12 can form a light array similar to a shadowless lamp in an operating room, improving the lighting effect; the depth of the lighting groove 11 is greater than the height of the lighting lamp 12, so that the lighting lamp 12 can be well protected by the lighting groove 11, improving the protection of the lighting lamp 12 and reducing the probability of injury.

[0068] In one embodiment of the present application, a protective cover flush with the port is provided in the lighting groove 11 to further improve the protection of the lighting lamp 12 .

[0069] In one embodiment of the present application, the lighting lamp 12 is a LED light-emitting device, which is widely available and easy to use.

[0070] In one embodiment of the present application, a control switch 13 for controlling the on / off of the lighting lamp 12 is disposed in the lighting groove 11 .

[0071] In one embodiment of the present application, the lighting lamp 12 uses a button battery as a power source, which occupies a small space and is convenient for replacement and use, so that the battery compartment can be stored in the lighting slot 11 nickel to avoid insufficient protection caused by protrusion.

[0072] In one embodiment of the present application, button batteries are selected in two types: rechargeable and non-rechargeable. For example, 3.6VLIR series, 3VML series, and VL series of rechargeable button batteries; or 3VCR series, 1.5VLR series, and 1.55VSR series of non-rechargeable button batteries. Batteries of different voltages and models can be selected according to different usage requirements.

[0073] A further optimized solution is that a fixed tube 14 is provided through the bottom plate 1, and movable rods 15 are slidably inserted at both ends of the fixed tube 14, and the ear clip 2 is movably provided on the movable rods 15. The fixed tube 14 is provided through the bottom plate 1, and the two ends of the fixed tube 14 extend out of both sides of the bottom plate 1, and the movable rods 15 are slidably inserted at both ends. The movable rods 15 can be flexibly locked on the fixed tube 14, so that the ear clip 2 can adjust its position as needed, thereby adapting to rabbit ears of different sizes, and enhancing the versatility and flexibility of the auxiliary device.

[0074] In one embodiment of the present application, the ear clip 2 is an arch-shaped clip, which avoids clamping the ear vein when fixed on the rabbit ear, resulting in the blood vessels being invisible, and ensures the comfort of the experimental rabbit while ensuring that the rabbit ear is firmly fixed.

[0075] Further optimization scheme, a plurality of elastically arranged locking pieces 16 are respectively provided at both ends of the fixed tube 14, and the plurality of locking pieces 16 surround and fit the outer wall of the movable rod 15; a locking nut 17 is respectively threadedly connected at both ends of the fixed tube 14, and the locking nut 17 presses the locking piece 16 to lock the movable rod 15. A plurality of notches are provided at equal intervals at the end of the fixed tube 14 to form a plurality of elastic locking pieces 16. When the locking nut 17 is tightened, the locking nut 17 presses the locking piece 16, so that the plurality of locking pieces 16 arranged in an annular shape are pressed against the movable rod 15 and lock the movable rod 15, thereby achieving the fixation of the fixed tube 14 and the movable rod 15, and avoiding the loosening of the movable rod 15 during use to affect the stability of the fixation.

[0076] In one embodiment of the present application, the ear clip 2 is adjustably arranged on the movable rod 15, and the direction of the ear clip 2 can be flexibly adjusted, thereby improving the flexibility and convenience of use.

[0077] In a further optimized solution, a contact groove 18 is provided on the contact surface between the vascular clamp 3 and the rabbit ear, a contact plate 19 is movably connected in the contact groove 18, a measuring spring 20 is fixedly connected to the side of the contact plate 19 away from the rabbit ear, the measuring spring 20 extends into a measuring groove 21 provided at the bottom of the contact groove 18, and the measuring spring 20 is fixedly connected to the measuring surface of a pressure sensor 22 provided in the contact groove 18. The contact groove 18 is provided on the contact surface between the vascular clamp 3 and the rabbit ear, and the contact plate 19 is movably connected, and through the cooperation of the measuring spring 20 and the pressure sensor 22, the pressure of the vascular clamp 3 on the rabbit ear can be monitored in real time, thereby avoiding excessive pressure damage to the rabbit ear.

[0078] In one embodiment of the present application, the pressure sensor 22 uses a button battery as a power source for the pressure sensor 22 to measure the pressure value.

[0079] In one embodiment of the present application, the pressure sensor 22 can be selected as follows:

[0080] Resistive Pressure Sensor

[0081] Strain gauge type: indirectly measures pressure by measuring the strain of various elastic elements (such as metals or semiconductor materials). When these materials are subjected to pressure, their resistance value changes, so the pressure can be measured.

[0082] Piezoresistive type: Made using the piezoresistive effect of single crystal silicon materials and integrated circuit technology. When the silicon diaphragm is subjected to pressure, its resistivity changes, and an electrical signal proportional to the pressure can be output through the measurement circuit.

[0083] Capacitive pressure sensor

[0084] A pressure sensor uses a capacitor as a sensitive element to convert the measured pressure into a change in capacitance. Generally, a circular metal film or a metal-plated film is used as an electrode of the capacitor. When the film deforms due to pressure, the capacitance formed between the film and the fixed electrode changes, thereby outputting an electrical signal related to the pressure.

[0085] Piezoelectric Pressure Sensor

[0086] It is mainly based on the piezoelectric effect, using electrical components and other mechanical components to convert the pressure to be measured into electricity. Piezoelectric materials such as quartz and diammonium phosphate will generate electric charges when subjected to pressure, and the pressure can be determined by measuring these charges.

[0087] Fiber Optic Pressure Sensor

[0088] The pressure of an object is measured using optical principles. The pressure is detected by measuring the changes in light caused by pressure when it is transmitted in the optical fiber.

[0089] Magnetoelectric pressure sensor

[0090] The pressure is measured by using the principle that the magnetic field changes under the action of pressure. When the pressure acts on the magnetoelectric element of the sensor, the deformation of the magnetoelectric element causes the magnetic field to change. The pressure value is calculated by measuring the change in the magnetic field.

[0091] Oscillating frequency pressure sensor

[0092] Pressure is detected by measuring the change in vibration frequency caused by pressure. When pressure acts on the sensor, it causes vibration of the internal structure of the sensor, and the vibration frequency is related to the pressure.

[0093] Those skilled in the art can make a selection according to usage requirements, which will not be described in detail here.

[0094] Further optimizing the scheme, a plurality of guide holes 23 are provided at the bottom of the measuring slot 21, and a guide rod 24 is slidably connected in the guide hole 23. The guide rod 24 extends out of the guide slot and is fixed to the end of the contact plate 19 away from the rabbit ear. The guide holes 23 are provided at the bottom of the measuring slot 21, and the guide rod 24 is slidably connected, so that the contact plate 19 can remain stable when moving, avoiding the accuracy of the pressure measurement being affected by shaking.

[0095] In a further optimized solution, the contact surface of the contact plate 19 and the rabbit ear is provided with a flexible contact sheet 25. The flexible contact sheet 25 is provided on the contact surface of the contact plate 19 and the rabbit ear, which improves the comfort and stability of the contact and avoids the discomfort or injury caused by the hard material directly contacting the rabbit ear.

[0096] Steps:

[0097] Fix the rabbit on the experimental table or in the rabbit fixing box, making sure that the rabbit's head cannot move freely to facilitate operation.

[0098] Pluck the hair on the outer edge of the rabbit's ear, flick or gently rub the rabbit's ear with your fingers, or wipe it with ethanol to make the ear vein fully dilated and clearly visible.

[0099] There are three prominent blood vessels in the rabbit ear, including two marginal auricular veins and a central artery. Because the inner marginal vein is deep and difficult to fix, the outer marginal vein is generally selected as the injection site.

[0100] Loosen the two locking nuts 17, adjust the positions and angles of the two ear clips 2, and then clamp the two ear clips 2 on the proximal and distal ends of the rabbit ears respectively, so that the rabbit ears fit on the floor plate 1. At this time, the lighting slot 11 is aligned with the selected injection position, and then the two vascular clamps 3 are clamped to the vein area of ​​the selected rabbit ear injection area, and then the fixing pin 4 is tightened to increase the clamping force of the vascular clamp 3 until the contact pressure measured by the pressure sensor 22 reaches the set value, clamp the venous blood vessels, and wait for the ear vein to be filled.

[0101] Hold the syringe in your right hand and insert the needle as far as possible from the distal end of the vein, and then push it about 1 cm parallel to the direction of the blood vessel and toward the heart end. Note that the needle should be at a certain angle to the skin to facilitate smooth insertion of the blood vessel.

[0102] Draw back the syringe needle plug. If blood returns, it means that the needle has been correctly inserted into the vein.

[0103] After confirming that the needle is in the blood vessel, slowly push the drug in. During the injection process, pay attention to observe the rabbit's reaction and deal with any abnormalities in a timely manner.

[0104] After the injection is completed, slowly pull out the needle and press the injection site with a cotton ball for several minutes to prevent bleeding, then loosen the two vascular clamps 3 and then the two ear clamps 2; you can also just loosen the two vascular clamps 3 and fix the injection tube with one of the vascular clamps 3 to facilitate continuous or multiple administrations.

[0105] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do 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 should not be understood as a limitation on the present invention.

[0106] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A rabbit ear vein injection aid, characterized in that: include: A bottom plate (1), the bottom plate (1) being transparent, and when in use, the bottom plate (1) is attached to the rabbit ears to stretch the rabbit ears, and a lighting component for auxiliary lighting and development is provided at the bottom end of the bottom plate (1); A fixing assembly, the fixing assembly comprising ear clips (2) movably connected to both sides of the bottom plate (1), wherein when in use, the two ear clips (2) are respectively clamped on the proximal end and the distal end of the rabbit ear, so that the bottom plate (1) is attached to the rabbit ear; A developing component, the developing component comprising two vascular clamps (3) movably arranged on the bottom plate (1); when assisting injection, the two vascular clamps (3) are clamped on both sides of the injection point of the rabbit ear to assist in the development of the rabbit ear vein; An adjustment component, the adjustment component comprising a fixing pin (4) movably arranged on the base plate (1), the fixing pin (4) fixing the end of the blood vessel clamp (3) on the base plate (1).

2. The rabbit ear vein injection aid according to claim 1, characterized in that: The bottom plate (1) is provided with a fixing hole (5) corresponding to the fixing pin (4), and the fixing pin (4) is movably connected in the fixing hole (5).

3. The rabbit ear vein injection aid according to claim 2, characterized in that: A pressure spring (7) is sleeved on the fixing pin (4), the top end of the pressure spring (7) is fixedly connected to the positioning cap (6) at the top end of the fixing pin (4), and the bottom end of the pressure spring (7) is fixedly connected to the top surface of the ear clip (2).

4. The rabbit ear vein injection aid according to claim 3, characterized in that: The top of the ear clip (2) is provided with an annular groove (8) arranged around the fixing pin (4), and a connecting ring (9) coaxially arranged with the fixing pin (4) is rotatably connected in the annular groove (8), and the top of the connecting ring (9) extends out of the annular groove (8), and the bottom end of the pressure spring (7) is fixedly connected to the top of the connecting ring (9).

5. The rabbit ear vein injection aid according to claim 1, characterized in that: The lighting assembly comprises a lighting groove (11) opened at the bottom end of the base plate (1), and a plurality of lighting lamps (12) for lighting are arranged in an array in the lighting groove (11).

6. The rabbit ear vein injection aid according to claim 1, characterized in that: A fixed tube (14) is provided through the bottom plate (1), and movable rods (15) are slidably inserted at both ends of the fixed tube (14), and the ear clip (2) is movably provided on the movable rods (15).

7. The rabbit ear vein injection aid according to claim 6, characterized in that: A plurality of elastically arranged locking plates (16) are respectively arranged at both ends of the fixed tube (14), and the plurality of locking plates (16) surround and fit around the outer wall of the movable rod (15); a locking nut (17) is respectively threadedly connected at both ends of the fixed tube (14), and the locking nut (17) presses the locking plates (16) to lock the movable rod (15).

8. The rabbit ear vein injection aid according to claim 1, characterized in that: A contact groove (18) is provided on the contact surface between the vascular clamp (3) and the rabbit ear, a contact plate (19) is movably connected in the contact groove (18), a measuring spring (20) is fixedly connected to the side of the contact plate (19) away from the rabbit ear, the measuring spring (20) extends into a measuring groove (21) provided at the bottom end of the contact groove (18), and the measuring spring (20) is fixedly connected to a measuring surface of a pressure sensor (22) arranged in the contact groove (18).

9. The rabbit ear vein injection aid according to claim 8, characterized in that: A plurality of guide holes (23) are provided at the bottom end of the measuring slot (21), and a guide rod (24) is slidably connected in the guide hole (23). The guide rod (24) extends out of the guide slot and is fixedly connected to an end of the contact plate (19) away from the rabbit ear.

10. The rabbit ear vein injection aid according to claim 8, characterized in that: The contact plate (19) is provided with a flexibly arranged contact sheet (25) in contact with the rabbit ear.

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