Puncture guide template

Abstract

The invention discloses a puncture guide template, belongs to the technical field of medical instruments, and aims to solve the problem that puncture is inaccurate due to the fact that an existing puncture guide template cannot fit a human body curve. The puncture guide template comprises a guide plate body and a bandage used for binding the guide plate body to the body of a patient, the guide plate body comprises a plurality of sub-plate bodies and a plurality of limiting assemblies, and each sub-plate body is provided with a guide channel used for inserting a guide needle; every two adjacent sub-plate bodies are rotationally connected with each other; the multiple limiting assemblies are arranged in the multiple corresponding sub-plate bodies correspondingly and used for limiting the rotation angle between every two adjacent sub-plate bodies. According to the puncture guide template, accurate vertical puncture can be achieved, the problem of inaccuracy in the prior art is solved, the treatment effect is guaranteed, related complications are reduced, and the safety of a patient in the treatment process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a puncture guide template. Background Art

[0002] With the continuous advancement of medical technology, CT (computed tomography) is playing an increasingly important role in clinical diagnosis and treatment. CT-guided puncture techniques, due to their precision and minimally invasive nature, are widely used in various interventional procedures, such as tumor biopsy, radiofrequency ablation, and seed implantation. However, traditional puncture methods face numerous challenges when performing punctures in complex anatomical areas, such as the waist, due to the complexity of human anatomy and individual differences.

[0003] Specifically, when a person lies prone on a CT machine, the skin on the lower back and back exhibits a certain curvature. This curvature varies in angle across different layers, making it difficult to control the angle during puncture and achieve precise vertical puncture. This inaccuracy can lead to puncture failure, tissue damage, incomplete treatment, or related complications, seriously compromising treatment effectiveness and patient safety. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and provide a puncture guide template that can achieve precise vertical puncture, avoid the inaccuracy problems existing in the prior art, ensure the treatment effect, reduce the problems of related complications, and ensure the safety of patients during treatment.

[0005] The present invention provides a puncture guide template including a guide plate body and a strap for binding the guide plate body to the patient's body, the guide plate body including multiple sub-plate bodies and multiple limiting components, each sub-plate body having a guide channel for inserting a guide needle; two adjacent sub-plate bodies are rotatably connected to each other; and multiple limiting components are respectively arranged inside multiple corresponding sub-plate bodies to limit the rotation angle between two adjacent sub-plate bodies.

[0006] Preferably, two adjacent sub-plate bodies are connected by a rotating shaft, and the rotating shaft is connected to one of the sub-plate bodies through a second gear ring group; the limiting assembly includes a clamping member that can extend into the second gear ring group, controlling the clamping member to enter or exit the gear teeth in the second gear ring group, thereby achieving the fixing or changing of the angle of the two adjacent sub-plate bodies.

[0007] Multiple sub-plates are arranged in sequence, with at least three sub-plates. The more sub-plates there are, the more they fit the curves of the human body. Preferably, there are eight sub-plates. The binding straps are two magic tapes. One end of one magic tape is fixedly connected to the leftmost sub-plate, and the other magic tape is fixedly connected to the rightmost sub-plate. The two magic tapes are adhered to each other. The rightmost sub-plate is a plain plate. The plain plate is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to the adjacent sub-plate. The following mainly introduces the sub-plates other than the plain plate in detail. One end of the sub-plate is fixedly connected to the rotating shaft, and the opposite end of the sub-plate has an axial hole. For two adjacent sub-plates, the rotating shaft fixed to one sub-plate is inserted into the axial hole of the other sub-plate. The rotating shafts and axial holes on the two adjacent sub-plates rotate with each other, so that the two adjacent sub-plates can rotate relative to each other.

[0008] Preferably, the clamping member is connected to a plurality of pressing components through a bracket, and each pressing component is arranged on the surface of the sub-plate body close to the human skin, for controlling the movement of the clamping member; each pressing component includes an elastic member and a sliding member; the two ends of the elastic member are respectively connected to the sub-plate body and the sliding member, and the sliding member extends to the interior of the sub-plate body, for driving the pressing component to move along the thickness direction of the sub-plate body.

[0009] The guide plate body is fixed to the human body by means of straps, and each sub-plate body on the guide plate body has multiple pressing components. After the multiple pressing components contact the human body, the bracket drives the clamping part to move, so that the clamping part can be clamped in the tooth groove of the third gear ring to form a limit; the bracket plate structure has multiple end heads on the bracket, and the number of end heads is preferably five, of which four end heads correspond to a pressing component respectively, and the fifth end head corresponds to the clamping part, and the clamping part is an L-shaped rod, one end of the L-shaped rod is fixedly connected to the fifth end head, and the other end is located below the third gear ring, and the shape of the end of the L-shaped rod is adapted to the tooth groove profile of the third gear ring, so that the end of the L-shaped rod can slide smoothly into or out of the tooth groove of the third gear ring.

[0010] Preferably, each sub-plate body is provided with a suction cup on a surface close to the human skin, for firmly fixing the sub-plate body on the human body.

[0011] Preferably, the suction cup has an exhaust port, and the exhaust port is exhausted by a negative pressure structure provided in the sub-plate body, so that the sub-plate body can be more firmly fixed on the human body.

[0012] Preferably, the negative pressure structure includes a piston plate, which is arranged in a sliding hole on the sub-plate body, and the end of the sliding hole is connected to the exhaust port. By controlling the piston plate to move in the sliding hole, a negative pressure environment is generated.

[0013] The sliding hole is long and narrow, one end of the piston plate is connected to the rotating shaft through a tension rope, and the other end of the piston plate is connected to the side wall of the sliding hole away from the rotating shaft through a spring. When the rotating cap is controlled to rotate to adjust the angle between two adjacent sub-plate bodies, the tension rope is wound around the rotating shaft, and at the same time, the tension rope pulls the piston plate to move, forming a negative pressure in the local sliding hole where the spring is located, and the air in the suction cup enters the sliding hole through the exhaust port, so that the suction cup can be more tightly adsorbed on the human skin, ensuring the accuracy of the position of the sub-plate body and the guide channel on the sub-plate body.

[0014] Preferably, the clamping member is L-shaped so that the end of the clamping member can be located below the pressing assembly.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The limiting component limits the angle of two adjacent sub-plates, so that when the strap ties the guide plate to the human body, the rotating cap can make the guide plate composed of multiple sub-plates fit the curve of the human skin better, making the position of the guide channel on the sub-plate more accurate, and achieving precise vertical puncture, avoiding the inaccuracy problem existing in the existing technology, ensuring the treatment effect, reducing the problem of related complications, and ensuring the safety of patients during treatment.

[0016] 2. At the same time, in order to ensure that the guide plate will not loosen due to the elasticity of human skin or human breathing, a pressing component is designed so that the angles of two adjacent sub-plates can be accurately limited, thereby avoiding the problem of misalignment of the guide channel position caused by changes in the angle of the sub-plates.

[0017] 3. After the rotating cap is rotated, a tension rope is wound around the rotating shaft, and the tension rope drives the piston plate to move. Negative pressure is formed in the local sliding hole where the spring is located, and the air in the suction cup enters the sliding hole through the exhaust port, so that the suction cup can be more closely adsorbed on the human skin, ensuring the accurate position of the sub-plate body and the guide channel on the sub-plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A top perspective view of the present invention; Figure 2 A bottom perspective view of the present invention; Figure 3 for Figure 2 Schematic diagram of the local structure; Figure 4 Schematic diagram of the top view of a single sub-board; Figure 5 It is a schematic diagram of the three-dimensional perspective structure of a single sub-plate; Figure 6 for Figure 3 A partial enlarged view of point A in the middle; Figure 7 for Figure 6 Schematic diagram of the structure from different perspectives; Figure 8 It is a structural schematic diagram of the clamping member of the present invention; Figure 9 Schematic diagram of the structure of the bracket of the present invention; Figure 10 It is a structural schematic diagram of the suction cup of the present invention; Figure 11 for Figure 4 Cross-sectional view at the middle BB; Figure 12 It is a schematic diagram of the partial perspective structure between two adjacent sub-plates; Figure 13 It is a structural schematic diagram of the pressing assembly of the present invention; Figure 14 An exploded view of the pressing assembly of the present invention; Figure 15 This is a schematic diagram of the modeling of the present invention.

[0019] Description of reference numerals: 1. Guide plate, 2. Strap, 3. Sub-plate, 4. Limiting assembly, 5. Guide channel, 6. Rotating shaft, 7. Connecting piece, 8. Bracket, 9. Pressing assembly, 10. Elastic piece, 11. Sliding piece, 12. Suction cup, 13. Exhaust port, 14. Piston plate, 15. Sliding hole, 16. Rotating cap, 17. First gear ring, 18. Second gear ring, 19. First bevel gear, 20. Second bevel gear, 21. Third gear ring, 22. Baffle, 23. Center axis, 24. First cylinder, 25. Rotating block, 26. Second cylinder, 27. First sliding surface, 28. Second sliding surface, 29. Sliding groove, 30. Hemisphere, 31. Triangular arc plate, 32. Sliding column, 33. Pull rope, 34. Spring. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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 described 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.

[0021] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons having ordinary skills in the field to which the invention belongs. “Include” or “comprising” and similar words mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. “Inside”, “outside”, “upper”, “lower”, “far”, “near”, “front”, “back”, etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0022] The drawings in this invention are not drawn strictly according to the actual scale. The specific size and quantity of each structure can be determined according to actual needs. The drawings described in this invention are only schematic diagrams of the structure. Figure 1 -Attached Figure 15 shown.

[0023] First embodiment The present invention provides a puncture guide template including a guide plate body 1 and a strap 2 for binding the guide plate body 1 to the patient's body, wherein the guide plate body 1 includes a plurality of sub-plate bodies 3 and a plurality of limiting assemblies 4, each of which has a guide channel 5 for inserting a guide needle; two adjacent sub-plate bodies 3 are rotatably connected to each other; the plurality of limiting assemblies 4 are respectively arranged inside a plurality of corresponding sub-plate bodies 3, for limiting the rotation angle between the two adjacent sub-plate bodies 3. Furthermore, the two adjacent sub-plate bodies 3 are connected by a rotating shaft 6, which is connected to one of the sub-plate bodies 3 through a second gear ring group; the limiting assembly 4 includes a clamping member 7 that can extend into the second gear ring group, controlling the clamping member 7 to enter or exit the gear teeth in the second gear ring group, thereby achieving the fixing or changing of the angle of the two adjacent sub-plate bodies 3.

[0024] Multiple sub-plate bodies 3 are arranged in sequence, and the straps 2 are two magic bands. One end of one magic band is fixedly connected to the sub-plate body 3 at the far left, and the other magic band is fixedly connected to the sub-plate body 3 at the far right. The two magic bands are adhered to each other, and the sub-plate body 3 at the far right is a light plate, which is fixedly connected to the rotating shaft 6. The rotating shaft 6 is rotatably connected to the adjacent sub-plate body 3. The following mainly introduces in detail the sub-plate bodies 3 except the light plate.

[0025] One end of the sub-plate body 3 is fixedly connected to a rotating shaft 6, and the opposite end of the sub-plate body 3 has an axial hole. For two adjacent sub-plate bodies 3, the rotating shaft 6 fixedly connected on one sub-plate body 3 is inserted into the axial hole of the other sub-plate body 3. The rotating shafts 6 and the axial holes on the two adjacent sub-plate bodies 3 rotate and cooperate with each other, so that the two adjacent sub-plate bodies 3 can rotate relative to each other. Each sub-plate body 3 has a setting cavity inside, and the rotating shaft 6 on one sub-plate body 3 is located inside the setting cavity of the adjacent sub-plate body 3. The end of the rotating shaft 6 is fixedly connected to a plum blossom-shaped rotating cap 16. A first gear ring 17 is fixedly provided on the rotating shaft 6. The first gear ring 17 engages with the second gear ring 18. The second gear ring 18 is fixedly connected to the sleeve. One end of the sleeve is fixedly connected to a first bevel gear 19. The sleeve is rotatably set on a shaft rod. The shaft rod is fixedly connected to the inner wall of the setting cavity. The first bevel gear 19 engages with the second bevel gear 20. The second bevel gear 20 is fixed to the end of the rotating cylinder. The rotating outer wall is fixedly connected to a third gear. Ring 21, the rotating drum is rotatably mounted on the polished rod, which is fixedly connected to the inner wall of the setting cavity. The shape of the end of the clamping member 7 is adapted to the shape of the tooth groove between two adjacent gear teeth on the third gear ring 21, and the moving direction of the clamping member 7 is parallel to the axial direction of the polished rod. The end of the clamping member 7 enters the tooth groove of the third gear ring 21, thereby limiting the rotation of the third gear ring 21 and simultaneously limiting the rotation of the second bevel gear 20, the first bevel gear 19, the second gear ring 18, and the first gear ring 17, so that the angle of the rotating shaft 6 relative to the adjacent sub-plate bodies 3 remains unchanged, thereby maintaining a stable angle between the two adjacent sub-plate bodies 3. The first gear ring 17, the second gear ring 18, the sleeve, the first bevel gear 19, the second bevel gear 20, the rotating drum, and the third gear ring 21 constitute the second gear ring group, which is located in the setting cavity.

[0026] The working principle of the first embodiment is as follows: The angle of two adjacent sub-plate bodies 3 is mainly limited by the limiting component 4, so that when the strap 2 ties the guide plate body 1 to the human body, the rotating cap 16 is rotated to make the guide plate body 1 composed of multiple sub-plate bodies 3 fit the curve of the human skin more accurately, so that the position of the guide channel 5 on the sub-plate body 3 is more accurate, and precise vertical puncture can be achieved, avoiding the inaccuracy problem existing in the existing technology, ensuring the treatment effect, reducing the problem of related complications, and ensuring the safety of patients during treatment.

[0027] Improvements are made on the basis of the first embodiment and serve as the second embodiment.

[0028] The clamping member 7 is connected to multiple pressing assemblies 9 via a bracket 8. Each pressing assembly 9 is positioned on the surface of the sub-plate 3, close to the human skin, and is used to control the movement of the clamping member 7. Furthermore, each pressing assembly 9 includes an elastic member 10 and a sliding member 11. The ends of the elastic member 10 are connected to the sub-plate 3 and the sliding member 11, respectively. The sliding member 11 extends into the interior of the sub-plate 3, driving the pressing assembly 9 to move along the thickness direction of the sub-plate 3.

[0029] The guide plate body 1 is fixed to the human body by the strap 2, and each sub-plate body 3 on the guide plate body 1 has multiple pressing components 9. After the multiple pressing components 9 contact the human body, the bracket 8 drives the clamping component 7 to move, so that the clamping component 7 can be clamped in the tooth groove of the third gear ring 21 to form a limit; the bracket 8 has a plate structure, and the bracket 8 has multiple end heads, and the number of end heads is preferably five, of which four end heads correspond to a pressing component 9 respectively, and the fifth end head corresponds to the clamping component 7. The clamping component 7 is an L-shaped rod, one end of the L-shaped rod is fixedly connected to the fifth end head, and the other end is located below the third gear ring 21, and the shape of the end of the L-shaped rod is adapted to the tooth groove profile of the third gear ring 21, so that the end of the L-shaped rod can slide smoothly into or out of the tooth groove of the third gear ring 21.

[0030] The pressing assembly 9 here is similar to the pressing structure of a press-type ballpoint pen. The inner wall of the cavity close to the human body is provided on the sub-plate body 3 and has a through hole for setting the pressing assembly 9. One end of the elastic member 10 is fixedly connected to the inner wall of the cavity. Here, the elastic member 10 is preferably a coil spring, and the other end is fixedly connected to the baffle 22. The baffle 22 is fixedly connected to the end of the bracket 8. The surface of the baffle 22 away from the elastic member 10 is fixedly connected to the central axis 23. The central axis 23 is arranged in the first cylinder 24. The outer periphery of the first cylinder 24 A plurality of rotating blocks 25 are evenly provided, and the number of rotating blocks 25 is preferably four. The end surface of each rotating block 25 away from the baffle 22 has an inclined arc surface with the same rotation direction. A second cylinder 26 is provided on the outer periphery of the lower end of the first cylinder 24. The end of the second cylinder 26 away from the baffle 22 is fixedly connected to the hole wall of the through hole opened on the sub-plate body 3. The end surface of the second cylinder 26 close to the rotating block 25 is evenly provided with four groups of first sliding surfaces 27 and second sliding surfaces 28 with the same rotation direction. The starting end of the second sliding surface 28 is connected The end of the second sliding surface 28 is provided with a sliding groove 29 along the axial direction of the second cylinder 26. The edges of the sliding groove 29 respectively connect the end end of the second sliding surface 28 of this group with the starting end of the next group of first sliding surfaces 27. Each first sliding surface 27 and each second sliding surface 28 can be slidably connected to the inclined arc surface. The rotation direction of the sliding surface 27 is the same as the rotation direction of the inclined arc surface. The sliding member 11 is slidably provided in the end of the second cylinder 26 away from the first cylinder 24. The sliding member 11 is preferably a sliding rod or a sliding cylinder. The end of the sliding member 11 is evenly provided with a plurality of triangular arc plates 31. The plurality of triangular arc plates 31 are connected in sequence to form a plurality of triangular limiting grooves. The plurality of triangular limiting grooves can all clamp the top end of the inclined arc surface on each rotating block 25. At the same time, four sliding columns 32 are evenly fixed on the end of the sliding member 11 in the circumferential direction. The four sliding columns 32 are slidably provided in the corresponding sliding grooves 29. The end of the sliding member 11 away from the first cylinder 24 is fixed with a hemisphere 30.

[0031] The elastic member 10 , the baffle 22 , the central shaft 23 , the first cylinder 24 , the rotating block 25 , the second cylinder 26 , the sliding member 11 , the triangular arc plate 31 , the multiple triangular arc plates 31 , the sliding column 32 and the hemisphere 30 together constitute the pressing assembly 9 .

[0032] After the guide plate 1 is fixed on the human body, the hemispherical body 30 is brought into contact with the human skin and the sliding member 11, the triangular arc plate 31, the rotating block 25, the first cylinder 24 and the baffle 22 are squeezed in sequence, and finally the elastic member 10 is compressed. During this period, the sliding column 32 slides upward from the bottom of the sliding groove 29, and the triangular limiting groove pushes the rotating block 25 out of the sliding groove 29, so that the sliding groove 29 slides into the first sliding surface 27. Under the action of the compressed elastic member 10, the starting end of the second sliding surface 28 blocks the rotating block 25 to limit the rotating block 25 from continuing to rotate. The height increase after the action further causes the baffle 22 to drive the clamping member 7 on the bracket 8 to slide into and be restricted in the tooth groove of the third gear ring 21, so as to limit the rotation of the third gear ring 21 and the rotating shaft 6, thereby ensuring the stability of the angle between the two adjacent sub-plate bodies 3, and avoiding the problem that the elastic effect of the skin or the contraction of the waist and abdomen caused by human breathing reduces the force exerted by the human skin on the hemisphere 30, and the elastic member 10 pushes the baffle 22 to move, causing the clamping member 7 to slide out of the tooth groove of the third gear ring 21, and also avoids the problem of the sub-plate body 3 and the guide channel 5 being offset.

[0033] The working principle of the second embodiment is as follows: The angles of two adjacent sub-plates 3 are mainly limited by the limiting component 4, so that when the strap 2 ties the guide plate 1 to the human body, the rotating cap 16 is rotated to make the guide plate 1 composed of multiple sub-plates 3 fit the curve of the human skin better, making the position of the guide channel 5 on the sub-plate 3 more accurate.

[0034] At the same time, in order to ensure that the guide plate 1 will not loosen due to the elasticity of human skin or human breathing, a pressing component 9 is designed so that the angles of two adjacent sub-plates 3 can be accurately limited, thereby avoiding the problem of misalignment of the guide channel 5 caused by the change in the angle of the sub-plate 3.

[0035] Improvements are made on the basis of the first embodiment and are provided as the third embodiment.

[0036] Each of the sub-plate bodies 3 is provided with a suction cup 12 on the surface close to the human skin, which is used to firmly fix the sub-plate body 3 on the human body. The suction cup 12 has an exhaust port 13. The exhaust port 13 is exhausted by a negative pressure structure provided in the sub-plate body 3, so that the sub-plate body 3 is more firmly fixed on the human body. Furthermore, the negative pressure structure includes a piston plate 14, which is provided in a sliding hole 15 provided on the sub-plate body 3. The end of the sliding hole 15 is connected to the exhaust port 13. By controlling the movement of the piston plate 14 in the sliding hole 15, a negative pressure environment is generated.

[0037] The sliding hole 15 is long and narrow, and one end of the piston plate 14 is connected to the rotating shaft 6 through a tension rope 33, and the other end of the piston plate 14 is connected to the side wall of the sliding hole 15 away from the rotating shaft 6 through a spring 34. When the rotating cap 16 is controlled to rotate to adjust the angle between the two adjacent sub-plate bodies 3, the tension rope 33 is wound around the rotating shaft 6, and at the same time, the tension rope 33 pulls the piston plate 14 to move, and negative pressure is formed in the local sliding hole 15 where the spring 34 is located. The air in the suction cup 12 enters the sliding hole 15 through the exhaust port 13, so that the suction cup 12 can be more closely adsorbed on the human skin, ensuring the accuracy of the position of the sub-plate body 3 and the guide channel 5 on the sub-plate body 3.

[0038] A method of using a puncture guide template of the present invention is as follows: First, the patient lies prone on the CT machine bed, with the patient's upper body and waist showing a certain curve; Then, the guide plate 1 is tied to the affected part of the human body by means of the strap 2. In essence, the ends of the two magic tapes are respectively wrapped around the abdomen on both sides of the patient's body and adhered to each other, so that the guide plate 1 is tied to the waist; Next, each rotating cap 16 is rotated to change the angles of the two adjacent sub-plates 3 relative to each other, so that each sub-plate 3 fits the human skin better. During this process, the hemispherical body 30 on each sub-plate 3 squeezes and drives the baffle 22 and the bracket 8, so that the clamping member 7 slides into the tooth groove of the third gear ring 21, ensuring that the angle between the two adjacent sub-plates 3 is stable. At the same time, after the rotating cap 16 is rotated, the tension rope 33 is wound around the rotating shaft 6, and the tension rope 33 drives the piston plate 14 to move, and negative pressure is formed in the local sliding hole 15 where the spring 34 is located. The air in the suction cup 12 enters the sliding hole 15 through the exhaust port 13, so that the suction cup 12 can be more tightly adsorbed on the human skin, ensuring the accuracy of the position of the sub-plate body 3 and the guide channel 5 on the sub-plate body 3.

[0039] In the above method, the angle of two adjacent sub-plate bodies 3 is limited by the limiting component 4, so that when the strap 2 ties the guide plate body 1 to the human body, the rotating cap 16 is rotated to make the guide plate body 1 composed of multiple sub-plate bodies 3 fit the curve of the human skin more accurately, so that the position of the guide channel 5 on the sub-plate body 3 is more accurate, and precise vertical puncture can be achieved, avoiding the inaccuracy problem existing in the existing technology, ensuring the treatment effect, reducing the problem of related complications, and ensuring the safety of patients during treatment.

[0040] 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. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A puncture guide template, comprising a guide plate body (1) and a strap (2) for binding the guide plate body (1) to a patient's body, characterized in that: The guide plate body (1) comprises a plurality of sub-plate bodies (3) and a plurality of position limiting components (4), and each sub-plate body (3) has a guide channel (5) for inserting a guide needle; Two adjacent sub-plate bodies (3) are rotatably connected to each other; The plurality of limiting components (4) are respectively arranged inside the plurality of corresponding sub-plate bodies (3) and are used to limit the rotation angle between two adjacent sub-plate bodies (3).

2. A puncture guide template according to claim 1, characterized in that: Two adjacent sub-plate bodies (3) are connected via a rotating shaft (6), and the rotating shaft (6) is connected to one of the sub-plate bodies (3) via a second gear ring assembly; The limiting assembly (4) includes a clamping member (7) capable of extending into the second gear ring group, and controls the clamping member (7) to enter or exit the gear teeth in the second gear ring group, thereby achieving the fixing or changing of the angles of two adjacent sub-plate bodies (3).

3. A puncture guide template according to claim 2, characterized in that: The clamping member (7) is connected to a plurality of pressing assemblies (9) via a bracket (8); each pressing assembly (9) is arranged on a surface of the sub-plate body (3) close to human skin and is used to control the movement of the clamping member (7).

4. A puncture guide template according to claim 3, characterized in that: Each pressing assembly (9) includes an elastic member (10) and a sliding member (11); The two ends of the elastic member (10) are respectively connected to the sub-plate body (3) and the sliding member (11), and the sliding member (11) extends into the interior of the sub-plate body (3) to drive the pressing assembly (9) to move along the thickness direction of the sub-plate body (3).

5. A puncture guide template according to claim 2, characterized in that: A suction cup (12) is provided on the surface of each sub-plate body (3) close to the human skin, for firmly fixing the sub-plate body (3) on the human body.

6. A puncture guide template according to claim 5, characterized in that: The suction cup (12) is provided with an exhaust port (13), and exhaust is achieved through a negative pressure structure provided in the sub-plate body (3), so that the exhaust port (13) is more firmly fixed on the human body.

7. A puncture guide template according to claim 6, characterized in that: The negative pressure structure comprises a piston plate (14), wherein the piston plate (14) is arranged in a sliding hole (15) provided on the sub-plate body (3), and the end of the sliding hole (15) is connected to the exhaust port (13). By controlling the piston plate (14) to move in the sliding hole (15), a negative pressure environment is generated.

8. The puncture guide template according to claim 3, characterized in that: The clamping member (7) is L-shaped, so that the end of the clamping member (7) can be located below the pressing assembly (9).

9. The puncture guide template according to claim 4, characterized in that: The end of the sliding member (11) is connected to a hemisphere (30), and the spherical surface of the hemisphere (30) contacts the human body to avoid scratching the human skin.

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