Miniature artery clamp for medical experiment
By designing a micro arterial clip with adjustable force, the problem of difficult to control clamping force is solved, ensuring the successful construction of the kidney ischemia model of young mice and improving the reliability of the experiment.
Patent Information
- Application Number
- CN202421426453.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-06-21
AI Technical Summary
When existing micro arteries are clamped in the renal artery of young mice, the clamping force is difficult to control, resulting in unsatisfactory construction of the ischemic model.
A micro arterial clip including a first clamp arm and a second clamp arm is designed, and is hinged by a rotating unit, equipped with an adjusting limit assembly and a silicone rubber jacket, allowing the experimenter to adjust the clamping force, and improve fit and anti-slip properties through a silicone rubber jacket and an anti-slip beam.
Accurate control of clamping force is achieved, ensuring the successful construction of the kidney ischemia model of young mice, reducing the problem of excessive or excessive clamping, and improving the reliability of the experiment.
Smart Images
Figure CN223111753U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of experimental auxiliary tools, and particularly to a micro arterial clip for medical experiments. Background Art
[0002] Intrauterine hypoxia in newborns is a common clinical condition. After hypoxia, it can cause damage to multiple organs. Ischemia-reperfusion injury (IRI) is the most important link leading to multi-organ damage. In order to study the related diseases after IRI in newborns, neonatal rats weighing about 20 g are needed to simulate newborns. When establishing an ischemia-reperfusion injury model, the precision requirements for various experimental equipment are higher than those for adult rats. The inventor is mainly engaged in the research of neonatal urinary system diseases. In the medical field, the renal artery of anesthetized neonatal rats is often blocked and then reperfused to cause renal ischemia-reperfusion injury, so as to study the mechanism of renal ischemia-reperfusion injury and understand how to prevent and treat this injury.
[0003] The general experimental process is as follows: First, select neonatal rats weighing about 20 g, fast them for 12 h before surgery, then inject anesthesia, depilate and disinfect the back of the rats. Cut the skin and muscle at 0.5 cm beside the spinal column and 0.5 cm below the rib margin on the back. After seeing the kidney, separate the renal artery of the kidney, and quickly clamp the bilateral renal arteries with an arterial clip. Make the kidney ischemic for 45 - 60 min, then release the arterial clip to restore blood flow, and observe the recovery of the kidney. After the observation, put the kidney back into the body of the neonatal rat. After it wakes up, put it back into the cage, and then regularly observe and record the physical condition of the neonatal rat.
[0004] When establishing a renal ischemia-reperfusion injury model for neonatal rats, because the neonatal rats weigh only about 20 g and the kidney tissue is thin and tender, a micro arterial clip is needed to clamp the renal artery of the neonatal rat to create an ischemia-reperfusion injury model. However, the currently commonly used micro arterial clip has a simple structure (as Figure 1 shown), and it is not easy for experimenters to control the clamping force during use. Sometimes, the clamping is too heavy, and sometimes the clamping fit is not enough, which easily leads to an unsatisfactory effect in constructing the ischemia model. Utility Model Content
[0005] This application provides a micro arterial clip for medical experiments, which can effectively solve the problems existing in the micro arterial clip in the prior art.
[0006] The above object of this application is achieved by the following technical solutions:
[0007] A micro arterial clip for medical experiments includes a first clip arm and a second clip arm. The first clip arm and the second clip arm are arranged in a scissors shape with dislocation and intersection, and the intersection point of the first clip arm and the second clip arm is hinged to each other through a rotating unit;
[0008] One end of each of the first clamping arm and the second clamping arm is fixedly provided with a clamping rod, and the projections of the two clamping rods on the horizontal plane coincide with each other; the other ends of the first clamping arm and the second clamping arm are both fixedly provided with a pressing part, and an adjusting and limiting component is arranged between the two pressing parts;
[0009] The adjusting and limiting component includes an adjusting screw rod and through grooves respectively arranged on the two pressing parts. The adjusting screw rod sequentially passes through the two through grooves in the vertical direction, and the adjusting screw rod is movably connected to the two through grooves; a limiting block is fixedly connected to the lower end of the adjusting screw rod, and an adjusting knob is sleeved on the upper end of the adjusting screw rod and is threadedly connected therebetween; the limiting block and the adjusting knob are respectively arranged on the mutually remote sides of the two pressing parts.
[0010] Further, a clamping sleeve made of silicone rubber is sleeved on the clamping rod.
[0011] Further, multiple rows of anti-slip convex beams are arranged on the mutually close sides of the two clamping sleeves.
[0012] Further, a plurality of leakage holes are arranged between adjacent anti-slip convex beams on the clamping sleeve; the inside of the clamping rod is a hollow structure, one side of the clamping rod facing the area where the anti-slip convex beam is arranged on the clamping sleeve is provided with an opening, one end of the clamping rod is provided with a rubber blocking piece, and an injection hole is arranged on the rubber blocking piece; a avoiding through hole is arranged at the position corresponding to the rubber blocking piece on the clamping sleeve.
[0013] Further, the parts of the first clamping arm and the second clamping arm on the side of the rotating unit away from the adjusting and limiting component are both arc-shaped structures, and the opening sides of the arc-shaped parts of the first clamping arm and the second clamping arm are close to each other.
[0014] Further, the rotating unit includes two sleeves and a torsion spring. The two sleeves are respectively fixedly connected to the middle positions of the first clamping arm and the second clamping arm. The two sleeves are rotationally connected through a rotating shaft. The torsion spring is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively fixedly connected to the inner walls of the two sleeves; in the normal state, the torsion spring can make the clamping rods of the first clamping arm and the second clamping arm in an open state.
[0015] Further, the limiting block is a spherical structure; a semi-circular pressing block is fixedly arranged on the lower side of the adjusting knob, and a through hole is arranged in the middle of the semi-circular pressing block, and the inner diameter of the through hole is larger than the diameter of the adjusting screw rod.
[0016] Furthermore, a pressing plate is fixedly provided on one side of each of the two pressing parts away from the clamping rod, and the projections of the two pressing plates on the horizontal plane coincide with each other.
[0017] In summary, the present application includes at least one of the following beneficial technical effects:
[0018] In the present application, the first clamping arm and the second clamping arm hinged to each other by the rotating unit can be freely opened and closed. After the experimenter takes out the kidney from the body of the young mouse, the experimenter can press the two pressing parts to make the clamping rods on the first clamping arm and the second clamping arm approach each other until the renal artery of the young mouse is clamped. In this process, the experimenter can adjust the clamping force of the two clamping rods on the renal artery of the young mouse by controlling the distance between the two pressing parts. When the clamping force of the two clamping rods on the renal artery of the young mouse meets the requirements, the experimenter can rotate the adjusting knob on the adjusting screw rod to make the adjusting knob move along the axis direction of the adjusting screw rod until the adjusting knob and the limiting block are respectively in contact with the mutually remote sides of the two pressing parts. In this way, the adjusting knob and the limiting block can limit the two pressing parts to keep the two pressing parts in the state required by the experimenter to ensure an appropriate clamping effect on the renal artery of the young mouse. Compared with the prior art, the micro arterial clamp of the present application can adjust its clamping force according to needs during the experiment to ensure the construction of an ideal renal ischemia model for young mice. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0020] Figure 1 is a schematic structural diagram of a commonly used arterial clamp in the prior art;
[0021] Figure 2 is a schematic overall structural diagram of the present application in the state to be used;
[0022] Figure 3 is a schematic structural diagram after one of the collets of the present application is disassembled from the corresponding clamping rod;
[0023] Figure 4 is Figure 3 an enlarged structural diagram of part A in
[0024] Figure 5 is a schematic diagram of the state when the arterial clamp of the present application is about to clamp the kidney of a young mouse;
[0025] Figure 6It is a schematic structural diagram after disassembling the first clamping arm and the second clamping arm of the present application;
[0026] Figure 7 It is an operation schematic diagram when injecting pure water or iodophor into the inside of the clamping rod with a syringe when the clamping is almost completed.
[0027] Reference numerals: 1, first clamping arm; 2, second clamping arm; 3, rotating unit; 31, sleeve; 32, torsion spring; 33, rotating shaft; 4, clamping rod; 5, extrusion part; 6, adjustment and limit assembly; 61, adjustment screw; 62, through groove; 63, limit block; 64, adjustment knob; 7, clamping sleeve; 8, anti-slip convex beam; 9, leakage hole; 10, rubber baffle; 11, injection hole; 12, avoidance through hole; 13, extrusion block; 14, pressing plate. Specific embodiments
[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts also belong to the scope of protection of the present application.
[0029] As Figures 2 - 4 As shown, a micro arterial clamp for medical experiments disclosed in the present application includes a first clamping arm 1 and a second clamping arm 2. The first clamping arm 1 and the second clamping arm 2 are arranged in a scissor shape with dislocation and intersection, and the intersection point of the first clamping arm 1 and the second clamping arm 2 is hinged to each other through a rotating unit 3; one end of each of the first clamping arm 1 and the second clamping arm 2 is fixedly provided with a clamping rod 4, and the projections of the two clamping rods 4 on the horizontal plane coincide with each other; the other ends of the first clamping arm 1 and the second clamping arm 2 are fixedly provided with an extrusion part 5, and an adjustment and limit assembly 6 is arranged between the two extrusion parts 5; the adjustment and limit assembly 6 includes an adjustment screw 61 and through grooves 62 respectively arranged on the two extrusion parts 5. The adjustment screw 61 sequentially passes through the two through grooves 62 in the vertical direction, and the adjustment screw 61 is movably connected to the two through grooves 62; a limit block 63 is fixedly connected to the lower end of the adjustment screw 61, and an adjustment knob 64 is sleeved on the upper end of the adjustment screw 61 and is threadedly connected thereto; the limit block 63 and the adjustment knob 64 are respectively arranged on the sides of the two extrusion parts 5 away from each other.
[0030] In the above embodiments, as Figure 1As shown in the figure, it is a type of micro arterial clip commonly used in existing medical experiments. When establishing a renal ischemia-reperfusion injury model, the port of this arterial clip is often used to clamp the renal artery of young rats to cause ischemia in the kidneys of young rats. The working principle of this arterial clip is similar to that of the clothes clip commonly used in daily life. When using it, one end is pressed by hand to open the other end, and then the opened part is placed at the position to be clamped and then released. The opened end of the arterial clip will reset under the action of the middle torsion spring 32 to clamp the object. However, when clamping the renal artery of young rats with this clip, there is a problem that the clamping force cannot be controlled. Sometimes, the clamping is too heavy, and sometimes the clamping fit is not enough, which affects the construction of the final ischemia model.
[0031] In this application, the first clip arm 1 and the second clip arm 2 are hinged to each other through a rotating unit 3. The first clip arm 1 and the second clip arm 2 hinged together can form a structure similar to scissors. When an experimenter needs to clamp the renal artery of a young rat, by pressing the two pressing parts 5 with fingers at the same time, the clamping rods 4 on the first clip arm 1 and the clamping rods 4 on the second clip arm 2 can be made to approach each other. Since the projections of the two clamping rods 4 on the horizontal plane coincide, when the two clamping rods 4 approach each other, they can exert force on the renal artery evenly and clamp it firmly. During the process of the two clamping rods 4 clamping the renal artery, the experimenter can adjust the clamping force of the two pressing parts 5 on the renal artery by controlling the distance between the pressing parts 5. Combining with the observation at the experimental site, the experimenter can stop driving the two pressing parts 5 when the clamping force of the two clamping rods 4 on the renal artery is appropriate.
[0032] Since the pressing part 5 of this application is provided with a through groove 62, and the through groove 62 is a long strip structure, it can provide a certain amount of movement space for the adjusting screw 61 movably inserted in the through groove 62. In this way, when the pressing part 5 rotates around the rotating unit 3, it will not be restricted by the adjusting screw 61. The diameter of the adjusting screw 61 is smaller than the width of the through groove 62, and the diameters of the limiting block 63 and the adjusting knob 64 are both larger than the width of the through groove 62, and the adjusting knob 64 is threadedly connected to the adjusting screw 61. In this way, the experimenter can adjust the position of the adjusting knob 64 on the adjusting screw 61 to change the distance between the adjusting knob 64 and the limiting block 63, so as to use the adjusting knob 64 and the limiting block 63 to limit the opening range of the pressing part 5.
[0033] When the experimenter adjusts the distance between the two pressing blocks 13 to a suitable state, the distance between the adjusting knob 64 and the limiting block 63 can be changed in the above-mentioned manner to keep the two clamping rods 4 that clamp the renal artery with appropriate force in the current state all the time. In this way, the problems existing in the arterial clip in the prior art will not occur, that is, the problem that the clamping force of the renal artery of young rats is too large or too small due to the uncontrollable force.
[0034] During the actual use process, after the experimenter places the two clamping rods 4 on the upper and lower sides of the renal artery of the young mouse, the experimenter can directly use the hand knob to adjust the knob 64, and adjust the distance between the two pressing parts 5 by adjusting the knob 64, so that the two clamping rods 4 corresponding to the two pressing parts 5 slowly approach each other. When the clamping force of the two clamping rods 4 meets the requirements, stop turning the adjusting knob 64. This usage method can also achieve the adjustment of the clamping force on the renal artery to ensure the construction of a successful ischemia model.
[0035] Furthermore, as Figures 3 - 5 shown, a jacket 7 made of silicone rubber is sleeved on the clamping rod 4.
[0036] In the above embodiments, the jacket 7 made of silicone rubber sleeved on the clamping rod 4 of the present application has a certain elasticity due to the silicone rubber material. In this way, during the process of clamping the renal artery by the clamping rod 4, it can not only play a certain protective role on the renal artery, but also improve the fitting effect between the clamping rod 4 and the renal artery. And the silicone rubber selected in the present application is medical-grade silicone rubber, which has excellent physiological inertness, is non-toxic, odorless, non-corrosive, non-irritating, has good physiological compatibility with the body, and can withstand repeated high-temperature and high-pressure sterilization for subsequent repeated use.
[0037] Furthermore, as Figure 3 and Figure 4 shown, multiple rows of anti-slip convex beams 8 are provided on the mutually approaching sides of the two jackets 7.
[0038] In the above embodiments, the anti-slip convex beams 8 provided on the jacket 7 can increase the friction force of the jacket 7 on the renal artery when clamping the renal artery, preventing it from sliding and deviating during the clamping process.
[0039] Furthermore, as Figure 3 and Figure 4 shown, a plurality of leakage holes 9 are provided between adjacent anti-slip convex beams 8 on the jacket 7; the inside of the clamping rod 4 is a hollow structure, and one side of the clamping rod 4 facing the area where the anti-slip convex beams 8 are provided on the jacket 7 is provided with an opening, one end of the clamping rod 4 is provided with a rubber baffle 10, and an injection hole 11 is provided on the rubber baffle 10; a relief through hole 12 is provided at the position on the jacket 7 corresponding to the rubber baffle 10.
[0040] In the above embodiments, since the clamping time for ischemia-reperfusion is about 1 hour, the tissue mucus of the young mouse will dry out and stick to the artery clamp. If the artery clamp is directly removed after the clamping is completed, the kidney tissue is very likely to be detached together, resulting in the failure of the model construction. As Figure 7As shown, the clamping rod 4 and the jacket 7 of the present application are arranged in the above-mentioned manner. When the clamping time is approaching, iodine tincture or pure water can be first filled into the medical syringe, and then the needle of the syringe is passed through the avoidance through-hole 12 of one of the jackets 7, and then inserted into the injection hole 11 on the corresponding rubber baffle 10 (the aperture of the injection hole 11 of the present application is slightly smaller than the outer diameter of the syringe needle, so that a sealed state can be maintained between the rubber baffle 10 and the syringe needle during the injection process). At this time, the syringe needle will extend into the clamping rod 4. Then, the experimenter can press the syringe push rod to inject pure water or iodine tincture into the clamping rod 4. The pure water or iodine tincture solution in the clamping rod 4 will flow from its open end to the jacket 7, and the anti-slip convex beam 8 area on the jacket 7 opposite to the open end of the clamping rod 4 just contacts the kidney of the young mouse during use. And leakage holes 9 are provided between adjacent anti-slip convex beams 8, so that the pure water or iodine tincture solution will seep out from the leakage holes 9, and slowly infiltrate the area where the jacket 7 contacts the kidney of the young mouse. Then, the same operation is performed on the other clamping rod 4 in this way (in order to facilitate the experimenter to quickly perform injection operations on the two clamping rods 4, the positions of the injection holes 11 on the upper and lower clamping rods 4 can be set on the same side). In this way, the kidney tissue in contact with the artery clip can be infiltrated. When the artery clip is loosened subsequently, the wet kidney tissue can be automatically separated from the artery clip without being stuck and pulled away by the artery clip, so as to ensure the final modeling effect.
[0041] Further, as Figure 5 shown, the portions of the first clamping arm 1 and the second clamping arm 2 on the side of the rotating unit 3 away from the adjusting and limiting assembly 6 are both arc-shaped structures, and the opening sides of the arc-shaped portions of the first clamping arm 1 and the second clamping arm 2 are close to each other.
[0042] In the above embodiments, in the present application, when the first clamping arm 1 and the second clamping arm 2 clamp the renal artery of the young mouse in the above-mentioned manner, the main part of the kidney of the young mouse can just be located within the arc-shaped portions of the first clamping arm 1 and the second clamping arm 2 to avoid the first clamping arm 1 and the second clamping arm 2 pressing on the kidney of the young mouse and causing unnecessary damage to it during the clamping process.
[0043] Further, as Figure 2 and Figure 6 shown, the rotating unit 3 includes two sleeves 31 and a torsion spring 32. The two sleeves 31 are respectively fixedly connected to the middle positions of the first clamping arm 1 and the second clamping arm 2. The two sleeves 31 are rotationally connected through a rotating shaft 33. The torsion spring 32 is sleeved on the rotating shaft 33, and the two ends of the torsion spring 32 are respectively fixedly connected to the inner walls of the two sleeves 31; in the normal state, the torsion spring 32 can keep the clamping rods 4 of the first clamping arm 1 and the second clamping arm 2 in an open state.
[0044] In the above embodiments, the mutually approaching ends of the sleeves 31 on the first clamping arm 1 and the sleeves 31 on the second clamping arm 2 of the present application are open. The open ends of the two sleeves 31 are attached to each other, so that the internal spaces of the two can be connected. The rotating shaft 33 is arranged in the space after the internal spaces of the two sleeves 31 are connected, and the two sleeves 31 are rotatably connected through the rotating shaft 33 (the function of the rotating shaft 33 of the present application on the first clamping arm 1 and the second clamping arm 2 is equivalent to the pin shaft of the hinge point of the scissors). The torsion spring 32 sleeved on the rotating shaft 33 of the present application is located in the space after the internal spaces of the two sleeves 31 are connected, and the two ends of the torsion spring 32 are respectively connected to the two sleeves 31. In this way, when the included angle between the first clamping arm 1 and the second clamping arm 2 changes, the torsion spring 32 will generate elastic force due to deformation. When the torsion spring 32 of the present application is in a normal state of not being stressed, it can keep the clamping rod 4 ends of the first clamping arm 1 and the second clamping arm 2 in an open state (similar to a fruit branch shear, when in a state to be used, the opening of the scissors is in the state of the largest opening). When clamping the renal artery, it is not necessary for the experimenter to continuously exert force to keep the clamping head in an open state like the existing artery clamp so that the clamping head of the artery clamp can cross the kidney to reach the area of the renal artery, which makes it more convenient to use.
[0045] In addition, when the experimenter presses the two pressing parts 5 to make them approach each other so that the two clamping rods 4 can clamp the renal artery, the included angle between the first clamping arm 1 and the second clamping arm 2 will change. During this process, the torsion spring 32 will deform, and the elastic force generated by the deformation of the torsion spring 32 can balance part of the pressing force of the experimenter at this time. In this way, when the experimenter adjusts the distance between the two pressing parts, the experimenter can better control the clamping force of the corresponding two clamping rods 4 on the renal artery. At the same time, when the artery clamp is released subsequently, the elastic force of the torsion spring 32 can also assist the first clamping arm 1 and the second clamping arm 2 to quickly reset.
[0046] Furthermore, as Figure 3 shown, the limiting block 63 is of a spherical structure; a semi-circular pressing block 13 is fixedly provided on the lower side of the adjusting knob 64, and a through hole is provided in the middle of the semi-circular pressing block 13, and the inner diameter of the through hole is larger than the diameter of the adjusting screw 61.
[0047] In the above embodiments, since the two pressing parts 5 rotate around the rotating unit 3 during use, there will be a certain included angle between the two pressing parts 5 and the horizontal plane for most of the time. The present application sets the limiting block 63 to a spherical structure and arranges a semi-circular pressing block 13 below the adjusting knob 64 in the above manner, which can ensure that in any state of the two pressing parts 5, when the pressing block 13 and the limiting block 63 limit the two pressing parts 5, good contact can be generated with them.
[0048] Furthermore, as Figure 1 shown, a pressing plate 14 is fixedly provided on each side of the two pressing parts 5 away from the clamping rod 4, and the projections of the two pressing plates 14 on the horizontal plane coincide with each other.
[0049] In the above embodiments, the two pressing plates 14 arranged in the above manner in the present application facilitate the experimenter to drive the two squeezing parts 5 to move.
[0050] The implementation principle of this embodiment is as follows: When the experimenter needs to clamp the renal artery of a young mouse, the entire artery clamp can be moved first so that the two clamping rods 4 in the open state cross the kidney and reach the upper and lower sides of the renal artery area. Then, the experimenter presses the two pressing plates 14 with fingers to make the clamping rods 4 on the first clamping arm 1 and the second clamping arm 2 approach each other until the renal artery of the young mouse is clamped. In this process, the experimenter can adjust the clamping force of the two clamping rods 4 on the renal artery of the young mouse by controlling the distance between the two squeezing parts 5. When the clamping force of the two clamping rods 4 on the renal artery of the young mouse meets the requirements, the experimenter can rotate the adjusting knob 64 on the adjusting screw rod 61 to make the adjusting knob 64 move along the axis direction of the adjusting screw rod 61 until the adjusting knob 64 and the limiting block 63 respectively contact the mutually remote sides of the two squeezing parts 5. In this way, the adjusting knob 64 and the limiting block 63 can limit the two squeezing parts 5 to keep the two squeezing parts 5 in the state required by the experimenter to ensure a proper clamping effect on the renal artery of the young mouse.
[0051] When the clamping time is about to end (such as when there are 5 - 10 minutes left), the experimenter can fill a clean medical syringe with iodophor solution or pure water, insert the needle of the syringe into the two clamping rods 4 in sequence and inject iodophor solution or pure water into them. The iodophor solution or pure water will seep out from the leakage holes 9 on the outer clamping sleeves 7 of the clamping rods 4, thereby infiltrating the kidney tissue. In this way, when the artery clamp is loosened later, the adhesion between the kidney tissue and the artery clamp can be avoided. After the experiment, it is cleaned and disinfected together with other experimental equipment.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A micro arterial clamp for medical experiments, characterized in that: It includes a first clamping arm (1) and a second clamping arm (2). The first clamping arm (1) and the second clamping arm (2) are arranged in a staggered and crossed manner to form a scissor shape, and the intersection point of the first clamping arm (1) and the second clamping arm (2) is hinged to each other through a rotating unit (3). One end of each of the first clamping arm (1) and the second clamping arm (2) is fixedly provided with a clamping rod (4), and the projections of the two clamping rods (4) on the horizontal plane coincide with each other; the other ends of the first clamping arm (1) and the second clamping arm (2) are both fixedly provided with an extrusion part (5), and an adjustment and limit assembly (6) is arranged between the two extrusion parts (5). The adjustment and limit assembly (6) includes an adjustment screw (61) and through grooves (62) respectively arranged on the two extrusion parts (5). The adjustment screw (61) sequentially passes through the two through grooves (62) in the vertical direction, and the adjustment screw (61) is movably connected to both of the two through grooves (62); a limit block (63) is fixedly connected to the lower end of the adjustment screw (61), and an adjustment knob (64) is sleeved on the upper end of the adjustment screw (61) and is threadedly connected therewith; the limit block (63) and the adjustment knob (64) are respectively arranged on the mutually remote sides of the two extrusion parts (5).
2. The micro arterial clamp for medical experiments according to claim 1, characterized in that: A clamping sleeve (7) made of silicone rubber is sleeved on the clamping rod (4).
3. The micro arterial clip for medical experiments according to claim 2, characterized in that: Multiple rows of anti-slip convex ribs (8) are arranged on the mutually close sides of the two clamping sleeves (7).
4. The micro arterial clip for medical experiments according to claim 3, characterized in that: A plurality of leakage holes (9) are arranged between adjacent anti-slip convex ribs (8) on the clamping sleeve (7); the interior of the clamping rod (4) is a hollow structure, an opening is arranged on one side of the clamping rod (4) facing the area where the anti-slip convex ribs (8) are arranged on the clamping sleeve (7), a rubber blocking piece (10) is arranged at one end of the clamping rod (4), and an injection hole (11) is arranged on the rubber blocking piece (10); an avoidance through hole (12) is arranged at the position on the clamping sleeve (7) corresponding to the rubber blocking piece (10).
5. The micro arterial clip for medical experiments according to any one of claims 1 to 4, characterized in that: The parts of the first clamping arm (1) and the second clamping arm (2) on the side of the rotating unit (3) away from the adjustment and limit assembly (6) are both arc-shaped structures, and the opening sides of the arc-shaped parts of the first clamping arm (1) and the second clamping arm (2) are close to each other.
6. The micro arterial clip for medical experiments according to any one of claims 1 to 4, characterized in that: The rotating unit (3) includes two sleeves (31) and a torsion spring (32). The two sleeves (31) are respectively fixedly connected to the middle positions of the first clamping arm (1) and the second clamping arm (2). The two sleeves (31) are rotationally connected through a rotating shaft (33). The torsion spring (32) is sleeved on the rotating shaft (33), and the two ends of the torsion spring (32) are respectively fixedly connected to the inner walls of the two sleeves (31); in the normal state, the torsion spring (32) can make the clamping rods (4) of the first clamping arm (1) and the second clamping arm (2) in an open state.
7. The micro arterial clip for medical experiments according to any one of claims 1 to 4, characterized in that: The limiting block (63) is of a spherical structure; a semicircular pressing block (13) is fixedly arranged on the lower side of the adjusting knob (64), a through hole is arranged in the middle of the semicircular pressing block (13), and the inner diameter of the through hole is larger than the diameter of the adjusting screw rod (61).
8. The micro arterial clip for medical experiments according to claim 7, characterized in that: A pressing plate (14) is fixedly arranged on one side of each of the two pressing parts (5) away from the clamping rod (4), and the projections of the two pressing plates (14) on the horizontal plane coincide with each other.