Puncture sampling device for medical oncology

Abstract

The invention discloses a puncture sampling device for medical oncology, which comprises a sampling body, and the sampling body comprises a needle tube; the needle head is inserted into the pathogen position of a patient, then the piston is pulled, negative pressure is generated in the needle tube when the piston is pulled, tumor tissue at the pathogen position can be adsorbed into the sampling groove formed in the top end of the needle head, and at the moment, a medical worker rotates the pressing handle by pressing the pressing handle; at the moment, along with rotation of a pressing handle, a connecting rod can be driven to move in a cutting outer barrel, and then a connecting shaft is driven to slide and adjust on the inner side of an arc-shaped groove formed in the bottom end of a fixed blade, and along with sliding of the connecting shaft, a rotating blade can be driven to rotate towards one end of the fixed blade through a connecting block; the tumor tissue adsorbed into the sampling groove is cut off, the tumor tissue which is adsorbed into the sampling groove and is in a growth connection state can be cut off and sampled through the cutting-off assembly, and the situation that the tumor falls off from the interior of the needle head after being sampled is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a puncture sampling device used in oncology. Background Art

[0002] Tumors are diseases that seriously endanger human health and life. In recent years, the incidence rate has gradually increased, and the age of onset has gradually decreased. Early detection, correct diagnosis, and timely treatment have an important impact on prognosis. With the continuous improvement of examination means and methods, the accuracy of diagnosis has gradually increased, but there are still a large number of tumors that do not have typical imaging characteristics, and diagnosis is more difficult. Correct diagnosis requires a combination of clinical, imaging and pathological. Among them, pathological diagnosis plays a key role in the choice of treatment plan, and puncture biopsy is the main way to obtain pathological diagnosis.

[0003] According to the announcement number CN215227925U, a puncture sampling device for oncology department is disclosed, including a sampling syringe and a U-shaped plate, a positioning ring is provided on the outer sliding sleeve of the sampling syringe, and a sleeve rod is installed on the top of the positioning ring by screws, the top of the sleeve rod is sleeved with a sleeve, and a connecting rod is installed on the top of the sleeve by bolts, a U-shaped plate is installed on one side of the connecting rod by screws, and a screw is installed on the top surface of the U-shaped plate through a reserved threaded hole, and a pressure plate is installed on the bottom of the screw by screws. The utility model is a puncture sampling device for oncology department, which has a reasonable structure and can facilitate personnel to send the sampling needle into the lesion position, and is suitable for being widely promoted and used.

[0004] The above-mentioned device is provided with a positioning structure on the outer circumference of the needle tube, so that medical staff can accurately send the needle into the lesion location when using it, and it is relatively quick to use. When the tumor tissue is adsorbed into the needle through the needle tube, since the tumor tissue is still in a state of growth and connection, if the needle tube is directly pulled out, the tumor tissue will fall off from the inside of the needle, affecting the sampling of the tumor tissue. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the above-mentioned device is provided with a positioning structure on the periphery of the needle tube, so that medical staff can accurately insert the needle into the lesion position when using it, and it is quick to use. When the tumor tissue is adsorbed into the needle through the needle tube, since the tumor tissue is still in a state of growth and connection, if the needle tube is directly pulled out, the tumor tissue will fall off from the inside of the needle, affecting the sampling of the tumor tissue. A puncture sampling device for oncology is provided.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a puncture sampling device for oncology, comprising a sampling body, the sampling body comprising a needle tube, a needle fixedly mounted on the needle tube, and a sampling groove provided at the top of the needle head, a piston slidably connected inside the needle tube, and a cutting component for cutting off tumor tissue is arranged inside the needle tube;

[0007] The cutting assembly includes a cutting outer cylinder arranged inside the needle tube, a fixed blade fixedly installed at one end of the cutting outer cylinder, and a rotating blade rotatably connected to the fixed blade, the cutting outer cylinder is slidably connected to the piston, the bottom end of the rotating blade is provided with a rotating shaft rotatably connected to the fixed blade, a connecting block is fixedly installed at one end of the rotating blade, and a connecting shaft is fixedly installed at the bottom end of the connecting block, an arc groove for sliding adjustment of the connecting shaft is provided at the bottom end of the fixed blade, a holding handle is fixedly installed at one end of the cutting outer cylinder, and a pressing handle is rotatably connected to one end of the holding handle, a connecting rod is provided at the bottom end of the connecting shaft, and the other end of the connecting rod is rotatably connected to the pressing handle.

[0008] As a further solution of the present invention: a groove is provided inside the needle for the cutting outer tube to adjust the cutting angle of the tumor tissue, and a rotating outer ring matching the groove is fixedly installed on the outer periphery of the cutting outer tube.

[0009] As a further solution of the present invention: the outer circumference of the needle tube is fixedly installed with gripping ear handles for medical staff to hold, and the gripping ear handles are symmetrically fixedly installed at both ends of the outer circumference of the needle tube.

[0010] As a further solution of the present invention: a fixing component is arranged on the periphery of the needle tube to increase the sampling stability of medical staff, and the fixing component includes a fixing ring which is sleeved on the periphery of the needle tube, and an annular block which abuts against the outer wall of the needle tube is arranged on the inner side of the fixing ring, and the annular blocks are symmetrically arranged at both ends of the inner side of the fixing ring, and a supporting spring is fixedly installed on the inner side of the fixing ring to support the annular block.

[0011] As a further solution of the present invention: an adjusting inner cylinder is fixedly installed on the top of the fixing ring, and an L-shaped adjusting outer cylinder for adjusting the fixed height is slidably connected to the outer periphery of the adjusting inner cylinder, a U-shaped block is fixedly installed on one end of the L-shaped adjusting outer cylinder, a clamping block is arranged on the inner side of the U-shaped block, and an adjusting screw threadedly connected to the U-shaped block is fixedly installed on the top of the clamping block.

[0012] As a further solution of the present invention: the outer circumference of the adjusting inner cylinder is symmetrically and evenly provided with a clamping groove which is clamped with the L-shaped adjusting outer cylinder, and the outer circumference of the L-shaped adjusting outer cylinder is symmetrically and slidably connected with a wedge-shaped clamping block which is clamped and adapted to the clamping groove.

[0013] As a further solution of the present invention: a pulling rod for medical staff to pull and adjust is fixed at one end of the wedge-shaped clamping block, sliding blocks for easy pulling and adjustment are symmetrically fixedly installed at both ends of the wedge-shaped clamping block, and a reset spring for adjusting and resetting the wedge-shaped clamping block is symmetrically fixed on the inner side of the L-shaped adjustment outer cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention inserts the needle into the patient's pathogenic position, and then pulls the piston. When the piston is pulled, negative pressure is generated inside the needle tube, which will absorb the tumor tissue at the pathogenic position into the sampling groove opened at the top of the needle. At this time, the medical staff presses the pressing handle to rotate it. At this time, as the pressing handle rotates, the connecting rod is driven to move inside the cutting outer cylinder, and then the connecting shaft is driven to slide and adjust inside the arc groove opened at the bottom of the fixed blade. As the connecting shaft slides, the rotating blade is driven to rotate toward one end of the fixed blade through the connecting block, and the tumor tissue absorbed into the sampling groove is cut off. The tumor tissue in the growth connection state absorbed into the sampling groove can be cut off and sampled through the cutting component, reducing the situation where the tumor falls off from the inside of the needle during sampling;

[0016] 2. When cutting off tumor tissue, the groove inside the needle and the rotating outer ring can change the angle and position of the rotating blade and the fixed blade when cutting off the tumor tissue in a growing and connected state, thereby increasing the functionality of medical staff in cutting off tumor tissue for sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the needle tube and the needle of the present invention;

[0019] Figure 3 It is a partial cross-sectional structural schematic diagram of the needle and the cut-off outer cylinder of the present invention;

[0020] Figure 4 It is a partial structural schematic diagram of cutting off the outer cylinder of the present invention;

[0021] Figure 5 The present invention Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0022] Figure 6 It is a schematic diagram of the structure of the fixed blade and the rotating blade of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0024] Figure 8It is a partial cross-sectional structural schematic diagram of the L-shaped adjusting outer cylinder and the adjusting inner cylinder of the present invention;

[0025] Fig. 9 The present invention Figure 8 Schematic diagram of the local enlarged structure at point B in the middle.

[0026] In the figure: 1. sampling body; 11. needle tube; 12. needle; 13. sampling slot; 14. piston; 15. grip ear handle; 2. cutting assembly; 21. cutting outer cylinder; 22. fixed blade; 23. rotating blade; 24. rotating shaft; 25. connecting block; 26. connecting shaft; 27. arc groove; 28. connecting rod; 29. ​​holding handle; 210. pressing handle; 211. rotating outer ring; 212. groove; 3. fixing assembly; 31. fixing ring; 32. supporting spring; 33. annular block; 34. adjusting inner cylinder; 35. L-shaped adjusting outer cylinder; 36. U-shaped block; 37. pressing block; 38. adjusting screw; 39. clamping groove; 310. wedge-shaped clamping block; 311. pulling rod; 312. sliding block; 313. reset spring. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" 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 mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0029] Reference Figures 1 to 9 In an embodiment of the present invention, a puncture sampling device for oncology includes the following embodiments:

[0030] Example 1

[0031] A puncture sampling device for oncology, comprising a sampling body 1, the sampling body 1 comprising a needle tube 11, a needle head 12 fixedly mounted on the needle tube 11, and a sampling groove 13 provided at the top of the needle head 12, a piston 14 slidably connected inside the needle tube 11, and a cutting component 2 for cutting off tumor tissue is arranged inside the needle tube 11;

[0032] The cutting assembly 2 includes a cutting outer cylinder 21 arranged inside the needle tube 11, a fixed blade 22 fixedly installed at one end of the cutting outer cylinder 21, and a rotating blade 23 rotatably connected to the fixed blade 22. The cutting outer cylinder 21 is slidably connected to the piston 14, and a rotating shaft 24 rotatably connected to the fixed blade 22 is provided at the bottom end of the rotating blade 23. A connecting block 25 is fixedly installed at one end of the rotating blade 23, and a connecting shaft 26 is fixedly installed at the bottom end of the connecting block 25. An arc groove 27 for sliding adjustment of the connecting shaft 26 is provided at the bottom end of the fixed blade 22. A gripping handle 29 is fixedly installed at one end of the cutting outer cylinder 21, and a pressing handle 210 is rotatably connected to one end of the gripping handle 29. A connecting rod 28 is provided at the bottom end of the connecting shaft 26, and the other end of the connecting rod 28 is rotatably connected to the pressing handle 210.

[0033] Reference Figures 1 to 9 The needle 12 has a groove 212 inside for the cutting outer tube 21 to adjust the cutting angle of the tumor tissue, and a rotating outer ring 211 matching the groove 212 is fixedly installed on the outer periphery of the cutting outer tube 21;

[0034] Through the implementation of this method: a through hole for air to pass through is opened on the inner side of the rotating outer ring 211, so that when the piston 14 is pulled, a negative pressure state will be generated inside the needle 12 to absorb the tumor tissue into the sampling groove 13. The angle and position of the rotating blade 23 and the fixed blade 22 in cutting off the tumor tissue in a growing connection state can be adjusted through the groove 212 and the rotating outer ring 211, thereby increasing the functionality of medical staff in cutting off tumor tissue for sampling.

[0035] Reference Figures 1 to 9 The outer circumference of the needle tube 11 is fixedly mounted with a gripping ear handle 15 for the medical staff to hold, and the gripping ear handle 15 is symmetrically fixedly mounted at both ends of the outer circumference of the needle tube 11;

[0036] Through the implementation of this method, by holding the ear handle 15 , it is convenient for medical personnel to hold the needle tube 11 when sampling tumor tissue.

[0037] Reference Figures 1 to 9The outer periphery of the needle tube 11 is provided with a fixing component 3 for increasing the sampling stability of the medical staff. The fixing component 3 includes a fixing ring 31 sleeved on the outer periphery of the needle tube 11, and an annular block 33 is provided on the inner side of the fixing ring 31 for abutting against the outer wall of the needle tube 11, and the annular blocks 33 are symmetrically arranged at both ends of the inner side of the fixing ring 31, and a supporting spring 32 for supporting the annular block 33 is fixedly installed on the inner side of the fixing ring 31, and an adjusting inner cylinder 34 is fixedly installed on the top of the fixing ring 31, and an L-shaped adjusting outer cylinder 35 for adjusting the fixed height is slidably connected to the outer periphery of the adjusting inner cylinder 34, and a U-shaped block 36 is fixedly installed on one end of the L-shaped adjusting outer cylinder 35, and a U-shaped block 36 is provided inside A clamping block 37 is provided, and an adjusting screw 38 threadedly connected to the U-shaped block 36 is fixedly installed on the top of the clamping block 37. A clamping groove 39 for limiting and clamping with the L-shaped adjusting outer cylinder 35 is symmetrically and evenly arranged around the outer circumference of the adjusting inner cylinder 34, and a wedge-shaped clamping block 310 for clamping and adapting to the clamping groove 39 is symmetrically and slidably connected to the outer circumference of the L-shaped adjusting outer cylinder 35. A pulling rod 311 for medical staff to pull and adjust is fixed at one end of the wedge-shaped clamping block 310, and sliding blocks 312 for easy pulling and adjustment are symmetrically fixed at both ends of the wedge-shaped clamping block 310, and a reset spring 313 for adjusting and resetting the wedge-shaped clamping block 310 is symmetrically fixed on the inner side of the L-shaped adjusting outer cylinder 35;

[0038] Through the implementation of this method: when the medical staff uses the sampling object 1 to sample the tumor at the patient's pathogenic site, first, the pressing block 37 is driven to move and pressed and fixed on the periphery of the mechanism by rotating the adjusting screw 38. At this time, the fixing ring 31 is fixed. Then, according to the required sampling height, the L-shaped adjusting outer cylinder 35 is pulled. When the L-shaped adjusting outer cylinder 35 is pulled, the internal wedge-shaped clamping block 310 will be squeezed into the L-shaped adjusting outer cylinder 35 by the clamping groove 39. When it is adjusted to the required height and the wedge-shaped clamping block 310 and the clamping groove 39 are in the same position, the reset spring 313 and the sliding block 312 will automatically insert the wedge-shaped clamping block 310 into the clamping groove 39 to complete the limit. When it is necessary to reset, the medical staff only needs to pull the pulling rod 311 on the outer periphery of the L-shaped adjusting outer cylinder 35 to pull the wedge-shaped clamping block 310 out of the clamping groove 39, and then the L-shaped adjusting outer cylinder 35 and the adjusting inner cylinder 34 can be reset, and then the needle tube 11 is inserted into the inner side of the fixing ring 31 and fixed with the annular blocks 33 symmetrically arranged at both ends of the inner ring. The needle tubes 11 of different sizes can be fixed by the annular blocks 33 and the supporting springs 32, and the sampling object 1 can be fixed by the fixing assembly 3, so as to reduce the situation where the needle 12 is separated from the pathogen position due to operational reasons when the medical staff is taking samples, and increase the stability of the medical staff in taking tumor tissue samples from patients.

[0039] Example 2

[0040] A puncture sampling device for oncology, comprising a sampling body 1, the sampling body 1 comprising a needle tube 11, a needle head 12 fixedly mounted on the needle tube 11, and a sampling groove 13 opened at the top of the needle head 12, a piston 14 is slidably connected inside the needle tube 11, a cutting assembly 2 for cutting off tumor tissue is arranged inside the needle tube 11, the cutting assembly 2 comprises a cutting outer cylinder 21 arranged inside the needle tube 11, a fixed blade 22 fixedly mounted on one end of the cutting outer cylinder 21, and a rotating blade 23 rotatably connected to the fixed blade 22, the cutting outer cylinder 21 and the piston are connected to each other. 14 sliding connection, the bottom end of the rotating blade 23 is provided with a rotating shaft 24 rotatably connected to the fixed blade 22, one end of the rotating blade 23 is fixedly installed with a connecting block 25, and the bottom end of the connecting block 25 is fixedly installed with a connecting shaft 26, the bottom end of the fixed blade 22 is provided with an arc groove 27 for sliding adjustment of the connecting shaft 26, one end of the cutting outer cylinder 21 is fixedly installed with a holding handle 29, and one end of the holding handle 29 is rotatably connected with a pressing handle 210, a connecting rod 28 is provided at the bottom end of the connecting shaft 26, and the other end of the connecting rod 28 is rotatably connected to the pressing handle 210.

[0041] Reference Figures 1 to 9 : A groove 212 is provided inside the needle 12 for the cutting outer tube 21 to adjust the cutting angle of the tumor tissue, and a rotating outer ring 211 adapted to the groove 212 is fixedly installed on the outer periphery of the cutting outer tube 21;

[0042] Through the implementation of this method: a through hole for air to pass through is opened on the inner side of the rotating outer ring 211, so that when the piston 14 is pulled, a negative pressure state will be generated inside the needle 12 to absorb the tumor tissue into the sampling groove 13. The angle and position of the rotating blade 23 and the fixed blade 22 in cutting off the tumor tissue in a growing connection state can be adjusted through the groove 212 and the rotating outer ring 211, thereby increasing the functionality of medical staff in cutting off tumor tissue for sampling.

[0043] Reference Figures 1 to 9 : The outer periphery of the needle tube 11 is fixedly installed with a gripping ear handle 15 for medical staff to hold, and the gripping ear handle 15 is symmetrically fixedly installed at both ends of the outer periphery of the needle tube 11;

[0044] Through the implementation of this method, by holding the ear handle 15 , it is convenient for medical personnel to hold the needle tube 11 when sampling tumor tissue.

[0045] The working principle of the present invention is: insert the needle 12 into the patient's pathogenic position, and then pull the piston 14. When the piston 14 is pulled, negative pressure is generated inside the needle tube 11, and the tumor tissue at the pathogenic position is adsorbed into the sampling groove 13 opened at the top of the needle 12. At this time, the medical staff presses the pressing handle 210 to rotate it. At this time, as the pressing handle 210 rotates, the connecting rod 28 is driven to move inside the cutting outer tube 21, and then the connecting shaft 26 is driven to slide and adjust inside the arc groove 27 opened at the bottom end of the fixed blade 22. As the connecting shaft 26 slides, the connecting block 25 is driven The rotating blade 23 rotates toward one end of the fixed blade 22 and cuts off the tumor tissue adsorbed into the sampling groove 13. The cutting component 2 can cut off and sample the tumor tissue in a growth connection state adsorbed into the sampling groove 13, thereby reducing the possibility of the tumor falling off from the needle 12 during sampling. At the same time, when cutting off the tumor tissue, the groove 212 inside the needle 12 and the rotating outer ring 211 can change the angle and position of the rotating blade 23 and the fixed blade 22 in cutting off the tumor tissue in a growth connection state, thereby increasing the functionality of medical staff in cutting off the tumor tissue for sampling.

[0046] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A puncture sampling device for oncology, characterized in that: The invention comprises a sampling object (1), wherein the sampling object (1) comprises a needle tube (11), a needle head (12) fixedly mounted on the needle tube (11), and a sampling groove (13) provided at the top of the needle head (12); a piston (14) is slidably connected inside the needle tube (11); and a cutting component (2) for cutting off tumor tissue is arranged inside the needle tube (11); The cutting assembly (2) comprises a cutting outer cylinder (21) arranged inside the needle tube (11), a fixed blade (22) fixedly mounted on one end of the cutting outer cylinder (21), and a rotating blade (23) rotatably connected to the fixed blade (22); the cutting outer cylinder (21) is slidably connected to the piston (14); a rotating shaft (24) rotatably connected to the fixed blade (22) is arranged at the bottom end of the rotating blade (23); a connecting block (25) is fixedly mounted on one end of the rotating blade (23) ), and a connecting shaft (26) is fixedly installed at the bottom end of the connecting block (25), an arc groove (27) for sliding adjustment of the connecting shaft (26) is opened at the bottom end of the fixed blade (22), a holding handle (29) is fixedly installed at one end of the cutting outer cylinder (21), and one end of the holding handle (29) is rotatably connected to a pressing handle (210), a connecting rod (28) is provided at the bottom end of the connecting shaft (26), and the other end of the connecting rod (28) is rotatably connected to the pressing handle (210).

2. A puncture sampling device for oncology according to claim 1, characterized in that: The needle head (12) is provided with a groove (212) for the cutting outer cylinder (21) to adjust the cutting angle of the tumor tissue, and a rotating outer ring (211) adapted to the groove (212) is fixedly mounted on the outer periphery of the cutting outer cylinder (21).

3. A puncture sampling device for oncology according to claim 1, characterized in that: A gripping ear handle (15) for medical personnel to hold is fixedly mounted on the outer circumference of the needle tube (11), and the gripping ear handle (15) is symmetrically fixedly mounted on both ends of the outer circumference of the needle tube (11).

4. A puncture sampling device for oncology according to claim 1, characterized in that: The outer circumference of the needle tube (11) is provided with a fixing component (3) for increasing the sampling stability of medical personnel. The fixing component (3) comprises a fixing ring (31) sleeved on the outer circumference of the needle tube (11). An annular block (33) is provided inside the fixing ring (31) for abutting against the outer wall of the needle tube (11). The annular blocks (33) are symmetrically arranged at two ends of the inner side of the fixing ring (31). A supporting spring (32) for supporting the annular block (33) is fixedly installed inside the fixing ring (31).

5. A puncture sampling device for oncology according to claim 4, characterized in that: An adjusting inner cylinder (34) is fixedly mounted on the top of the fixing ring (31), and an L-shaped adjusting outer cylinder (35) for adjusting the fixed height is slidably connected to the outer periphery of the adjusting inner cylinder (34), a U-shaped block (36) is fixedly mounted on one end of the L-shaped adjusting outer cylinder (35), a pressing block (37) is arranged on the inner side of the U-shaped block (36), and an adjusting screw (38) threadedly connected to the U-shaped block (36) is fixedly mounted on the top of the pressing block (37).

6. A puncture sampling device for oncology according to claim 5, characterized in that: The outer circumference of the adjusting inner cylinder (34) is symmetrically and evenly provided with a clamping groove (39) for limiting clamping with the L-shaped adjusting outer cylinder (35), and the outer circumference of the L-shaped adjusting outer cylinder (35) is symmetrically and slidably connected with a wedge-shaped clamping block (310) for clamping and matching with the clamping groove (39).

7. A puncture sampling device for oncology according to claim 6, characterized in that: A pulling rod (311) for medical personnel to pull and adjust is fixedly arranged at one end of the wedge-shaped clamping block (310), sliding blocks (312) for easy pulling and adjustment are symmetrically fixedly installed at both ends of the wedge-shaped clamping block (310), and a reset spring (313) for adjusting and resetting the wedge-shaped clamping block (310) is symmetrically fixedly arranged on the inner side of the L-shaped adjustment outer cylinder (35).

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