Puncture device for chronic kidney disease treatment

Abstract

The invention relates to the technical field of medical instruments, in particular to a puncture device for chronic kidney disease treatment. Comprising a puncture cylinder, an electric push rod assembly is arranged on the outer wall of the puncture cylinder, the other end of the electric push rod assembly is arranged in the puncture cylinder, a bevel gear assembly is further arranged in the puncture cylinder, the electric push rod assembly drives the bevel gear assembly to rotate, a puncture needle assembly is arranged in the puncture cylinder, and the bevel gear assembly pushes the puncture needle assembly to puncture. According to the puncture device for treating the chronic kidney disease, the kidney can be punctured at a constant speed, the sampling comfort is guaranteed, in addition, the push rod structure is arranged, the needle inserting depth can be noticed, and then the needle inserting depth is controlled. A piston rod part structure is further arranged, when the puncture needle punctures, a piston rod part retreats, a vacuum structure in a cavity of the puncture needle is achieved, and it is guaranteed that tissue obtained through puncture is left in the puncture needle. And after the puncture is completed, the inner rod moves forwards, so that the tissue is pushed out, and the complete tissue is reserved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a puncture device for treating chronic kidney disease. Background Art

[0002] Renal puncture is renal biopsy, also known as renal puncture biopsy. Due to the wide variety of kidney diseases and the complex causes and pathogenesis, the clinical manifestations of many kidney diseases are not completely consistent with the histological changes of the kidneys. For example, the clinical manifestations are nephrotic syndrome, and the pathology can be presented as minimal lesions, mild lesions, mild mesangial proliferation, membranous nephropathy, membranoproliferative nephritis, focal segmental sclerosis and other changes.

[0003] Currently, punctures in the nephrology department are mostly performed by doctors holding a biopsy device and inserting a puncture needle into the patient's body. During the puncture process, there are often problems with the stability of the puncture.

[0004] In order to solve this technical problem, the existing patent application number is "202122203895.7", and the name is "A puncture device for the treatment of chronic kidney disease", including a puncture needle, a guide plate, a first locking piece and a second locking piece. The puncture needle outer sleeve is provided with a retracting cylinder, and the guide plates are placed on both sides of the retracting cylinder and cooperate with the slider mechanism arranged on both sides of the retracting cylinder. The bottom end of the guide plate is hinged to the puncture positioning seat arranged under the puncture needle. The first locking piece is placed on both sides of the retracting cylinder and passes through the retracting cylinder to cooperate with the puncture needle. The second locking piece is placed at the connection between the guide plate and the slider mechanism; the puncture needle outer sleeve of the puncture device is provided with a retracting cylinder, and the retracting cylinder can slide along the guide plate through the slider mechanism, and the guide plate can fix the retracting cylinder through the locking piece, so that the puncture needle can remain stationary after the puncture is completed by locking the two locking pieces, which is safer.

[0005] However, the device still has problems such as being unable to control needle insertion at a uniform speed and being unable to completely sample after puncture. Summary of the invention

[0006] The purpose of the present invention is to address the defects and shortcomings of the prior art. The purpose of the present invention is to provide a puncture device for the treatment of chronic kidney disease with a simple structure, reasonable design and easy use, which can puncture the kidney and improve the integrity of sampling after puncture.

[0007] In order to achieve the above technical effects, the technical ideas of the present invention are as follows: The present invention provides a puncture device for treating chronic kidney disease with a simple structure, reasonable design and convenient use. The device can puncture the kidney at a constant speed, ensuring the comfort of sampling. In addition, a push rod structure is provided, so that the depth of the needle insertion can be noted, thereby realizing the control of the depth of the needle insertion. A piston rod structure is provided, and while the puncture needle is puncturing, the piston rod part retreats to realize a vacuum structure in the cavity of the puncture needle, thereby ensuring that the tissue obtained by the puncture remains in the puncture needle. After the puncture is completed, the inner rod moves forward to realize the pushing out of the tissue, thereby retaining the intact tissue.

[0008] To achieve the above object, the technical solution adopted by the present invention is: A puncture device for treating chronic kidney disease comprises a puncture tube, an outer wall of the puncture tube is provided with an electric push rod assembly, the other end of the electric push rod assembly is provided in the puncture tube, a bevel gear assembly is also provided in the puncture tube, the electric push rod assembly drives the bevel gear assembly to rotate, a puncture needle assembly is provided in the puncture tube, and the bevel gear assembly pushes the puncture needle assembly for puncture.

[0009] Preferably, the electric push rod assembly includes an electric push rod, a moving block and a U-shaped rod, the electric push rod is fixedly arranged on the side wall of the puncture tube, the moving block is fixedly arranged at the end of the electric push rod, one end of the U-shaped rod is fixedly connected to the moving block, and the other end is inserted into the puncture tube.

[0010] Preferably, the U-shaped rod is composed of a sliding rod portion, a screw rod portion and a piston rod portion from the bend to the end, sliding bars are arranged on both sides of the sliding rod portion, the screw rod portion is a screw structure, and the piston rod portion is a rod body structure with a smooth outer wall.

[0011] Preferably, a fixing block is arranged in the puncture tube, and sliding holes cooperating with the sliding rod and the sliding bar are provided at the ends of the fixing block and the puncture tube.

[0012] Preferably, the bevel gear assembly includes a lower bevel gear, a number one side bevel gear, a number two side bevel gear and an upper bevel gear. A screw bearing is provided in the lower bevel gear, the screw bearing is passed through the screw rod part, the lower bevel gear is meshed with the number one side bevel gear, the number one side bevel gear and the number two side bevel gear rotate coaxially through the rotating shaft, and the number two side bevel gear and the upper bevel gear are meshed and rotated.

[0013] Preferably, a horizontal plate is provided in the puncture tube, the screw bearing is rotatably provided in a mounting hole opened in the center of the horizontal plate, a vertical support plate is provided on the upper end surface of the horizontal plate, one end of the rotating shaft is rotatably provided on the inner wall of the puncture tube, and the other end is rotatably provided on the support plate.

[0014] Preferably, the puncture needle assembly includes a screw, a partition plate and a movable plate. The partition plate is fixedly arranged in the puncture cylinder. One end of the screw passes through the partition plate and is keyed to the upper bevel gear, and the other end is rotatably arranged on the side wall of the puncture cylinder. The movable plate is connected to the screw and the lead screw. The upper end of the screw is provided with a puncture needle, and the piston rod portion passes through the through hole and is located in the puncture needle.

[0015] A method for operating a puncture device for treating chronic kidney disease. During surgical puncture, the puncture needle at the front end of the device is aimed at the site to be punctured and sampled, and the electric push rod is started. When the electric push rod is retracted, the sliding rod, the screw rod and the piston rod are driven to move downward, wherein while the piston rod moves downward, the screw rod moves forward, driving the lower bevel gear to rotate, the lower bevel gear meshes with two No. 1 side bevel gears to rotate in opposite directions, the No. 1 side bevel gear and the No. 2 side bevel gear rotate coaxially, and the two No. 2 side bevel gears respectively mesh with the two upper bevel gears to rotate, so that the two upper bevel gears rotate in the same direction; the upper bevel gears rotate in the same direction to drive the screw rod to rotate in the same direction, and the rotation of the screw rod drives the moving plate to move upward, and while the moving plate moves upward, it drives the puncture needle forward, thereby completing the puncture of the patient; After the sampling is completed, the puncture needle is directly pulled out, and then the electric push rod is started again to push it out. The entire working principle is the opposite of the above-mentioned sampling process; during this process, the piston rod moves upward and the puncture needle moves downward, so that the acquired sample is pushed out of the puncture needle.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a puncture device for treating chronic kidney disease with a simple structure, reasonable design and convenient use, which can puncture the kidney at a constant speed, ensuring the comfort of sampling. In addition, an electric push rod structure is provided, and the depth of the needle insertion can be noticed through the running distance of the electric push rod, thereby realizing the control of the needle insertion depth; 2. The present invention is provided with a U-shaped rod and a fixing block. The U-shaped rod design can reduce the length of the entire device. The setting of the fixing block can ensure that the U-shaped rod does not twist when moving. Moreover, the formed cavity can reduce the weight of the device, avoid the center of gravity from shifting backward, and further avoid unstable operation caused by too high a center of gravity during the puncture operation; 3. The present invention is provided with a U-shaped rod including a sliding rod portion, a screw rod portion and a piston rod portion. One rod realizes multiple functions and connects multiple mechanism components in series.

[0017] 4. The present invention is provided with a puncture needle assembly and an electric push rod assembly. Based on the creative design, the electric push rod and the movable plate move in opposite directions, breaking the convention. During puncture, when the piston rod moves downward, a negative pressure environment is formed in the puncture needle. Compared with the existing structure, the negative pressure environment is conducive to the complete acquisition of tissue by the puncture needle on the one hand, and is also conducive to the integrity of the tissue on the other hand. When taking out the sample, the piston rod moves upward, and the puncture needle moves downward, so that the acquired sample is pushed out of the puncture needle. Compared with the conventional method, the integrity of the sampling can be guaranteed, and the process of taking out the sample is very smooth and easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is the front view of the present invention.

[0020] Figure 2 It is a front view of the puncture needle of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the sliding rod portion of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the sliding hole.

[0023] Among them, 1. puncture tube, 11. fixed block, 2. electric push rod assembly, 21. electric push rod assembly, 22. moving block, 23. U-shaped rod, 231. sliding rod part, 2311. sliding bar, 232. screw part, 233. piston rod part, 234. sliding hole, 3. bevel gear assembly, 31. lower bevel gear, 32. No. 1 side bevel gear, 33. No. 2 side bevel gear, 34. rotating shaft, 35. upper bevel gear, 36. support plate, 4. puncture needle assembly, 41. screw, 42. partition plate, 43. moving plate, 44. puncture needle. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "front end", "back end", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The following is combined with Figure 1-Figure 4 The preferred embodiments of the present invention are described. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Due to the wide variety of kidney diseases, complex causes and pathogenesis, the clinical manifestations of many kidney diseases are not completely consistent with the histological changes of the kidneys. In order to clarify the etiology and pathology of the disease and further confirm the specific disease the patient suffers from, a kidney puncture is required.

[0029] During the puncture, the patient lies prone with a hard pillow on the abdomen to prevent the kidney from moving during the puncture. The puncture area is routinely disinfected and covered with a drape, and local infiltration anesthesia is performed. When the puncture needle is inserted, the patient is asked to hold his breath when the needle tip approaches the renal capsule, and then the puncture needle is quickly inserted into the target, and the patient is asked to breathe shallowly; the obtained tissue strip is gently pushed out of the biopsy needle, spread on a sterilized dry paper sheet, and sent for examination immediately. After the needle is removed, the puncture point needs to be pressed for 5 to 10 minutes to stop bleeding, and a local pressure bandage should be applied. Example

[0030] The technical solution adopted in this specific embodiment is: a puncture device for treating chronic kidney disease, including a puncture tube 1, which is a cylindrical structure, different from the cylindrical structure of a general syringe. According to the technical solution of this application, the structure of the puncture tube 1 is further improved. The outer wall of the puncture tube 1 is provided with an electric push rod assembly 2, and the other end of the electric push rod assembly 2 is provided in the puncture tube 1.

[0031] The electric push rod assembly 2 includes an electric push rod 21, a moving block 22 and a U-shaped rod 23. The electric push rod 21 is bonded to the side wall of the puncture tube 1 by hot melt adhesive, and the moving block 22 is fixedly arranged at the push rod end of the electric push rod 21. One end of the U-shaped rod 23 is fixedly connected to the moving block 22, and the other end is inserted into the puncture tube 1.

[0032] Furthermore, when in use, the electric push rod 21 is started, and the push rod portion of the electric push rod 21 pushes the moving block 22 to move forward, and the moving block 22 drives the U-shaped rod 23 to move forward or backward as a whole, thereby achieving an effect similar to that of a syringe push rod.

[0033] In actual operation, the electric push rod 21 can puncture at a constant speed, which can achieve a more comfortable effect and thus a better puncture effect compared to manual operation.

[0034] The design of the U-shaped rod 23 can reduce the length of the entire device, centralize the center of gravity of the device, and avoid unstable operation caused by too high a center of gravity during operation.

[0035] The U-shaped rod 23 includes a sliding rod portion 231, a screw rod portion 232 and a piston rod portion 233 from the bend to the end, that is, the portion of the U-shaped rod 23 slidingly disposed in the puncture tube 1 is divided into these three sections.

[0036] Sliding bars 2311 are provided on both sides of the sliding rod 231. Correspondingly, a sliding hole 234 cooperating with the sliding bar 2311 is also opened on the center line of the solid structure at the tail of the puncture tube 1. Through the cooperation of the sliding bar 2311 and the sliding hole 234, the U-shaped rod 23 can be restricted and positioned during operation to prevent the part located in the puncture tube 1 from twisting, causing the U-shaped rod 23 to break, or affecting the accuracy of the puncture surgical operation.

[0037] The screw rod portion 232 of the U-shaped rod 23 is provided with a thread, which drives the bevel gear assembly 3 disposed in the puncture tube 1 to rotate.

[0038] It should be particularly noted that the thread of the screw rod portion 232 is a twist drill thread rather than a conventional screw rod thread.

[0039] The piston rod portion 233 of the U-shaped rod 23 is a rod body structure with a smooth outer wall, and has two functions: one is to provide a negative pressure environment. When puncturing, it retracts to create a negative pressure environment inside the puncture needle 44, which is beneficial for the puncture needle 44 to puncture and obtain tissue. When the tissue inside the puncture needle 44 needs to be removed, the piston rod portion 233 is pushed outward, so that the tissue inside the puncture needle 44 can be pushed out more completely as a whole, so as to obtain a better and more complete tissue, which is beneficial for pathological detection and analysis.

[0040] Furthermore, in order to further improve the stability of the U-shaped rod 23, a fixed block 11 is provided in the puncture tube 1. A sliding hole 234 cooperating with the sliding rod 231 and the sliding bar 2311 is opened at the center line of the fixed block 11, which plays the same role as the solid structure at the tail of the puncture tube 1.

[0041] Furthermore, there is a cavity between the fixing block 11 and the solid structure at the tail of the thorn tube 1. The cavity is provided to avoid the entire solid structure being larger, causing the center of gravity of the device to be located at the tail of the device, thereby affecting the stability of operation. In addition, the hollow structure setting can also reduce the use of materials during manufacturing, thereby reducing costs, which is conducive to reducing the selling price and the price for patients.

[0042] The bevel gear assembly 3 includes a lower bevel gear 31, a first side bevel gear 32, a second side bevel gear 33 and an upper bevel gear 35. A horizontal plate 12 is fixedly arranged in the puncture tube 1. The horizontal plate 12 plays a role in supporting the bevel gear assembly 3. A screw bearing is splined in the lower bevel gear 31. The screw bearing is passed through the screw part 232. Due to the special structure of the screw part 232, when in use, the screw part 232 is pushed forward, which will drive the lower bevel gear 31 to rotate in place.

[0043] Furthermore, in order to improve the stability of the screw bearing, a part of the screw bearing is also rotatably disposed in a mounting hole opened in the center of the horizontal plate 12 , thereby providing a stable supporting force for the entire lower bevel gear 31 .

[0044] A vertical support plate 36 is fixedly arranged on the upper end surface of the horizontal plate 12, one end of the rotating shaft 34 is rotatably arranged on the inner wall of the puncture tube 1, and the other end is rotatably arranged on the support plate 36. Among them, the first side bevel gear 32 is fixedly arranged on the rotating shaft 34 on one side of the support plate 36, and meshes with the lower bevel gear 31, and the second side bevel gear 33 is fixedly arranged on the rotating shaft 34 on the other side of the support plate 36. The first side bevel gear 32 and the second side bevel gear 33 rotate coaxially through the rotating shaft 34, and the second side bevel gear 33 and the upper bevel gear 35 mesh and rotate. The puncture needle assembly 4 is connected to the upper bevel gear 35.

[0045] When in use, the push rod end of the electric push rod 21 pushes the U-shaped rod 23 to move inward, and then the screw rod part 232 will also move forward, thereby driving the lower bevel gear 31 to rotate, and the lower bevel gear 31 engages with the two number one side bevel gears 32 to rotate in opposite directions, the number one side bevel gear 32 and the number two side bevel gear 33 rotate coaxially, and the two number two side bevel gears 33 respectively engage with the two upper bevel gears 35 to rotate, so that the two upper bevel gears 35 rotate in the same direction.

[0046] The puncture needle assembly 4 includes a screw rod 41, a partition plate 42 and a movable plate 43. The partition plate 42 is fixedly arranged in the puncture tube 1. One end of the screw rod 41 passes through the partition plate 42 and is keyed to the upper bevel gear 35, and the other end is rotatably arranged on the inner top side wall of the puncture tube 1.

[0047] Furthermore, in order to improve the stability of the screw rod 41, a bearing is arranged between the screw rod 41 and the partition plate 42, so that the screw rod 41 can rotate more smoothly. Similarly, a bearing is also arranged between the screw rod 41 and the inner top surface of the puncture tube 1, so that the screw rod 41 can rotate more smoothly.

[0048] The movable plate 43 is screw-connected with the screw 41. It should be particularly emphasized that the setting of the screw 41 in the present application has clear direction requirements. When the piston rod portion 233 moves upward, that is, moves toward the front end of the puncture tube, the screw 41 is required to drive the movable plate 43 to move in the opposite direction, that is, move downward.

[0049] The center of the movable plate 43 is provided with a through hole corresponding to the piston rod 233, and the puncture needle 44 is hot-melt-bonded in the through hole of the movable plate 43. When the movable plate 43 moves outward, the puncture needle 44 is driven forward to complete the puncture. The piston rod 233 is inserted into the puncture needle 44.

[0050] Application examples: A patient has kidney disease. B-ultrasound showed that there were lesions, but the extent of the lesions and the specific type of lesions could not be determined. After research, it was necessary to perform puncture sampling with a puncture needle, and then analyze the pathological samples to determine the disease before treatment.

[0051] Based on the above findings, the puncture device for treating chronic kidney disease of the present application is used for sampling and analysis. The details are as follows: First, the patient is placed in a prone position to expose the patient's sampling site. At the same time, the anesthesiologist is required to anesthetize the patient, whether local or general anesthesia, which needs to be determined based on the estimated sampling time. At the same time, the patient's skin is disinfected and cleaned.

[0052] The puncture needle 44 at the front end of the device is aligned with the part to be punctured and sampled, and the electric push rod 23 is started. When the electric push rod 23 is retracted, the sliding rod 231, the screw rod 232 and the piston rod 233 are driven to move downward, wherein the screw rod 232 moves forward while the piston rod 233 moves downward, driving the lower bevel gear 31 to rotate, the lower bevel gear 31 meshes with the two first side bevel gears 32 to rotate in opposite directions, the first side bevel gear 32 and the second side bevel gear 33 rotate coaxially, and the two second side bevel gears 33 respectively mesh with the two upper bevel gears 35 to rotate, so that the two upper bevel gears 35 rotate in the same direction. The upper bevel gears 35 rotate in the same direction and drive the screw rod 41 to rotate in the same direction, and the screw rod 41 rotates and drives the moving plate 43 to move upward, and the moving plate 43 moves upward while driving the puncture needle 44 forward, thereby completing the puncture of the patient. Since the piston rod portion 233 is a similar piston structure, a negative pressure environment will be formed in the puncture needle 44 during its downward movement. Compared with the existing structure, the negative pressure environment is beneficial to the complete acquisition of the tissue by the puncture needle on the one hand, and is also beneficial to the integrity of the tissue on the other hand.

[0053] After the sampling is completed, the puncture needle 44 is directly pulled out, and then the electric push rod 23 is started again to push the electric push rod 23 out. The entire working principle is the opposite of the above-mentioned sampling process. In this process, the piston rod 233 moves upward, and the puncture needle 44 moves downward, so that the acquired sample is pushed out of the puncture needle 44. Compared with the conventional method, the integrity of the sampling can be guaranteed, and the process of taking out the sample is very smooth and easy.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A puncture device for treating chronic kidney disease, characterized in that: The invention comprises a puncture tube (1), wherein an electric push rod assembly (2) is arranged on the outer wall of the puncture tube (1), the other end of the electric push rod assembly (2) is arranged in the puncture tube (1), a bevel gear assembly (3) is also arranged in the puncture tube (1), the electric push rod assembly (2) drives the bevel gear assembly (3) to rotate, a puncture needle assembly (4) is arranged in the puncture tube (1), and the bevel gear assembly (3) drives the puncture needle assembly (4) to puncture.

2. A puncture device for treating chronic kidney disease according to claim 1, characterized in that: The electric push rod assembly (2) comprises an electric push rod (21), a moving block (22) and a U-shaped rod (23); the electric push rod (21) is fixedly arranged on the side wall of the puncture tube (1); the moving block (22) is fixedly arranged at the end of the electric push rod (21); one end of the U-shaped rod (23) is fixedly connected to the moving block (22) and the other end is inserted into the puncture tube (1).

3. A puncture device for treating chronic kidney disease according to claim 2, characterized in that: The U-shaped rod (23) comprises a sliding rod portion (231), a screw rod portion (232) and a piston rod portion (233) in sequence from the bend to the end portion, sliding bars (2311) are arranged on both sides of the sliding rod portion (231), the screw rod portion (232) is a screw structure, and the piston rod portion (233) is a rod body structure with a smooth outer wall.

4. A puncture device for treating chronic kidney disease according to claim 3, characterized in that: A fixing block (11) is arranged inside the puncture tube (1), and sliding holes (234) cooperating with the sliding rod (231) and the sliding bar (2311) are provided at the ends of the fixing block (11) and the puncture tube (1).

5. A puncture device for treating chronic kidney disease according to claim 4, characterized in that: The bevel gear assembly (3) comprises a lower bevel gear (31), a first side bevel gear (32), a second side bevel gear (33) and an upper bevel gear (35); a screw bearing is arranged in the lower bevel gear (31), the screw bearing is passed through the screw rod portion (232); the lower bevel gear (31) is meshed with the first side bevel gear (32); the first side bevel gear (32) and the second side bevel gear (33) rotate coaxially via a rotating shaft (34); and the second side bevel gear (33) and the upper bevel gear (35) rotate in meshing relationship.

6. A puncture device for treating chronic kidney disease according to claim 5, characterized in that: A horizontal plate (12) is arranged inside the puncture tube (1), a lead screw bearing is rotatably arranged in a mounting hole opened in the center of the horizontal plate (12), a vertical support plate (36) is arranged on the upper end surface of the horizontal plate (12), one end of the rotating shaft (34) is rotatably arranged on the inner wall of the puncture tube (1), and the other end is rotatably arranged on the support plate (36).

7. A puncture device for treating chronic kidney disease according to claim 6, characterized in that: The puncture needle assembly (4) comprises a screw (41), a partition plate (42) and a movable plate (43); the partition plate (42) is fixedly arranged in the puncture tube (1); one end of the screw (41) passes through the partition plate (42) and is keyed to the upper bevel gear (35); the other end is rotatably arranged on the side wall of the puncture tube (1); the movable plate (43) is screw-connected to the screw (41); a puncture needle (44) is arranged at the upper end of the movable plate (43); and the piston rod portion (233) passes through the through hole and is located in the puncture needle (44).

8. A method for operating a puncture device for treating chronic kidney disease, characterized in that: During surgical puncture, the puncture needle (44) at the front end of the device is aligned with the part to be punctured and sampled, and the electric push rod (23) is started. The electric push rod (23) retracts, which drives the sliding rod (231), the screw rod (232) and the piston rod (233) to move downward. When the piston rod (233) moves downward, the screw rod (232) moves forward, driving the lower bevel gear (31) to rotate. The lower bevel gear (31) meshes with the two first side bevel gears (32) to rotate in opposite directions. , the first side bevel gear (32) and the second side bevel gear (33) rotate coaxially, and the two second side bevel gears (33) respectively mesh with the two upper bevel gears (35) to rotate, so that the two upper bevel gears (35) rotate in the same direction; the upper bevel gears (35) rotate in the same direction to drive the screw rod (41) to rotate in the same direction, and the rotation of the screw rod (41) drives the movable plate (43) to move upward, and the movable plate (43) moves upward while driving the puncture needle (44) forward, thereby completing the puncture of the patient; After the sampling is completed, the puncture needle (44) is directly pulled out, and then the electric push rod (23) is started again to push the electric push rod (23) out. The entire working principle is the opposite of the above-mentioned sampling process; during this process, the piston rod portion (233) moves upward, and the puncture needle (44) moves downward, so that the acquired sample is pushed out of the puncture needle (44).

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