Operation guiding needle and use method thereof

Abstract

The invention discloses an operation guiding needle and a using method thereof, and belongs to the technical field of medical instruments, the operation guiding needle comprises a needle tube and an annular frame, the right end of the needle tube is provided with a needle head, the left end of the needle tube is communicated with a needle seat, the left end of the needle seat is provided with a connector, and the outer arc surface of the needle seat is provided with three limiting grooves; according to the device, a clamping plate, a needle base, an arc-shaped suction cup, a contact block, an extrusion groove, a threaded cylinder, a lead screw, a gas storage frame and a piston plate are adopted, a stable supporting foundation is provided for the guide needle, once the contact block is separated from the extrusion groove, an elastic assembly immediately plays a role, a circular plate is pushed to move towards the needle base, and the clamping plate also acts; by means of the design, it is guaranteed that the annular frame and the guide needle are stably limited on the body surface of a patient, random shaking of the guide needle in the operation process is effectively prevented, and the accuracy and safety of the operation are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical instruments, and in particular relates to a surgical guide needle and a method of using the same. Background Art

[0002] A guide needle is a medical device commonly used during medical surgery. It is a long, thin needle that can be inserted into a location within the human body to provide guidance or positioning for subsequent surgical procedures. Guide needles often have special designs, such as those that can be detected by X-rays or magnetic resonance imaging equipment, allowing the doctor to clearly visualize their location. In some surgeries, guide needles can also be used to guide surgical instruments or implants to the correct location to achieve the desired therapeutic effect.

[0003] There are many existing technologies for guide needles, such as: Chinese Patent Publication No. CN211068661U discloses a guide needle for peritoneal catheterization surgery, comprising a guide needle and a connecting cap. The guide needle comprises an integrally formed straight handle, a curved transition section, and a needle body. The connecting cap comprises a cylindrical connecting block connected to the rear end of the handle. The rear end of the connecting block is provided with an annular protrusion. This application is safe and reliable, significantly reducing the risk of catheter drift and complications during peritoneal catheterization surgery. It is also convenient and quick to operate, saving time and effort, and achieving excellent clinical results, bringing benefits to patients.

[0004] Chinese Patent Publication No. CN219251336U discloses an intravenous catheter assembly and an introducer needle. An intravenous (IV) catheter assembly may include a catheter adapter and a catheter extending from the distal end of the catheter adapter. The IV catheter assembly may include an introducer needle. The elongated shaft may include a backflow notch, and the backflow notch may include a distal end and a proximal end. The backflow notch may include a smoothly tapered edge extending from the distal end in a direction of increasing depth of the backflow notch. The smoothly tapered edge may extend between the distal end and the proximal end along at least half of the entire length of the backflow notch. In an orthogonal side projection of the IV catheter assembly, each tangent of the smoothly tapered edge is angled at 30° or less relative to the longitudinal axis of the introducer needle.

[0005] However, there are still the following technical problems in actual use: 1. When the guide needle is inserted into the patient's body and subsequent operations are performed, the handheld guide needle cannot ensure its stability and may move slightly. This movement may cause the guide needle to be accidentally pulled out or further inserted into the patient's body. This phenomenon not only leads to deviations in treatment positioning and increases the difficulty of operation, but may also cause unnecessary injuries to the patient. 2. When the patient turns, rolls over or changes position due to pain or discomfort, the relative position of the organs will change significantly. At this time, the deviation of the guide needle in the body becomes difficult to control, which can easily cause damage to the internal organs, thereby causing great inconvenience to the surgical treatment process and may even cause secondary injuries.

[0006] Based on this, the present invention designs a surgical guide needle and a method of using the same to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to propose a surgical guide needle and its use method in order to solve the problem that the deviation of the guide needle in the body becomes difficult to control, which can easily cause damage to the internal organs, thereby causing great inconvenience to the surgical treatment process and may even cause secondary injuries.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: A surgical guide needle comprises a needle tube and an annular frame, the right end of the needle tube is provided with a needle head, the left end of the needle tube is connected to a needle seat, the left end of the needle seat is provided with a connecting head, the outer arc surface of the needle seat is provided with three limiting grooves, the right side of the annular frame is fixedly connected to three arc-shaped suction cups, the left side of the annular frame is fixedly connected to the position of the arc-shaped suction cup, the left end of the mobile negative pressure device is fixedly connected to a connecting plate, the right side of the connecting plate is fixedly connected to a rotation adjustment device, the rotation adjustment device is fixedly connected to the left side of the annular frame, three extrusion grooves are provided on the side surface of the connecting plate, a movable clamping mechanism is slidably connected in the extrusion groove, and the movable clamping mechanism is fixedly connected to the left side of the annular frame.

[0009] As a further description of the above technical solution: The positions of the three movable clamping mechanisms respectively correspond to the positions of the three limiting grooves. An intermediate pipe is connected between the three movable clamping mechanisms, and the connecting plate is set to be annular.

[0010] As a further description of the above technical solution: The rotation adjustment device includes a screw rod, which is fixedly connected to the right side of the connecting plate. The screw rod is externally threaded with a threaded barrel, and the threaded barrel is outer-circuited with a bearing, which is fixedly connected to the left side of the annular frame.

[0011] As a further description of the above technical solution: The mobile negative pressure device includes an air storage frame, which is fixedly connected to the left side of the annular frame. A piston plate is slidably connected to the air storage frame. The left side of the piston plate is fixedly connected to a piston rod. The right side of the air storage frame is provided with an air hole that passes through the annular frame and the arc-shaped suction cup. The arc-shaped suction cup is connected to the air storage cavity in the air storage frame located on the right side of the piston plate.

[0012] As a further description of the above technical solution: The piston rod is slidably connected to a connecting sleeve on the outside, and the connecting sleeve is connected to the left side of the gas storage frame. The ends of the three piston rods located outside the gas storage frame are fixedly connected to the same connecting plate, and the three gas storage frames are equidistantly arranged on the left side of the annular frame.

[0013] As a further description of the above technical solution: The movable clamping mechanism includes a cylinder, a fixed seat is fixedly connected to the right side of the outer arc surface of the cylinder, the fixed seat is fixedly connected to the left side of the annular frame, a circular plate is slidably connected inside the cylinder, and the air storage chamber in the cylinder away from the needle seat is connected to the intermediate tube.

[0014] As a further description of the above technical solution: The circular plate is fixedly connected to a cross bar on one side close to the needle seat, and the cross bar is fixedly connected to a clamping plate on one end close to the needle seat. The clamping plate is arranged in an arc shape, and the clamping plate is fixedly connected to a limiting block on one end close to the needle seat. The width of the limiting block corresponds to the width of the limiting groove. The limiting block can be moved into the limiting groove. After the limiting block enters the limiting groove, it can move to a certain extent along the circumferential direction.

[0015] As a further description of the above technical solution: The outside of the cross bar is slidably connected to a sliding sleeve, and the sliding sleeve is connected to the outside of the cylinder. The left side of the cross bar is fixedly connected to an extension rod, and the other end of the extension rod is fixedly connected to a connecting seat, and the side of the connecting seat close to the connecting plate is fixedly connected to a contact block.

[0016] As a further description of the above technical solution: The contact block is triangular in shape and is slidably connected in the extrusion groove. An elastic component is fixedly connected to the side surface of the circular plate, and the other end of the elastic component is fixedly connected to the inner wall of the cylinder.

[0017] A method for using a surgical guide needle, comprising the following steps: When the guide needle needs to be inserted, the needle is directly inserted into the designated position in the patient's body, and then the ring frame is pressed to make the arc-shaped suction cup fit the surface of the patient's skin, and the threaded barrel is controlled to rotate. While the threaded barrel rotates, the screw rod is controlled to extend, and the screw rod drives the connecting plate, the piston rod and the piston plate to move to the left. While the piston plate moves to the left, the gas in the arc-shaped suction cup is sucked into the gas storage frame through the air hole. The air pressure in the arc-shaped suction cup is reduced, so that the arc-shaped suction cup is stably adsorbed on the surface of the patient's body. When the connecting plate moves to the left, the extrusion groove moves away from the contact block. When the contact block is separated from the extrusion groove, the elastic component controls the circular plate to move closer to the needle seat, and the clamping plate moves to be clamped on the surface of the needle seat. At the same time, the limit block is inserted into the limit groove to prevent the needle seat from sliding left and right. At this time, the guide needle is limited to prevent the guide needle from loosening outward or inserting deeper. When the patient makes a small movement, the internal organs in the patient's body will squeeze the guide needle to move to a certain extent. At this time, the needle seat will squeeze the clamping plate to move, and the clamping plate at the corresponding position will be squeezed along the overall offset direction of the guide needle. The limit block slides in the limit groove, and the clamping plate drives the cross bar to control the movement of the circular plate. The three cylinders are connected through the middle tube. The gas in them will flow after being compressed, so that the air pressure in the three cylinders is maintained at a similar level, ensuring that the three clamping plates can move to a certain extent while maintaining the clamping limit on the needle seat, so that the needle seat can maintain a relatively stable state and can be displaced to a certain extent.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, a clamping plate, a needle seat, an arc-shaped suction cup, a contact block, an extrusion groove, a threaded barrel, a screw, an air storage frame and a piston plate are adopted. When the threaded barrel is rotated, the screw, the connecting plate, the piston rod and the piston plate work together to move accurately to the left. In this process, the movement of the piston plate effectively extracts the gas in the arc-shaped suction cup through the air hole and introduces it into the air storage frame, thereby reducing the air pressure in the suction cup. This mechanism ensures that the arc-shaped suction cup can be firmly adsorbed on the patient's body surface, providing a stable support foundation for the guide needle. Once the contact block is separated from the extrusion groove, the elastic component immediately takes effect, pushing the circular plate to move toward the needle seat, and the clamping plate also moves accordingly, and finally tightly clamped on the surface of the needle seat. This design not only ensures that the annular frame and the guide needle are firmly limited on the patient's body surface, but also effectively prevents the guide needle from shaking at will during the operation, greatly improving the accuracy and safety of the operation.

[0019] 2. In the present invention, a limit groove, a limit block, a cylinder, a circular plate, an intermediate tube and an elastic component are used. The three cylinders are interconnected through the intermediate tube, so that the gas can flow freely after being pressurized, maintaining similar air pressure in the three cylinders, ensuring that the three clamping plates can move to a certain extent while maintaining precise clamping and limiting of the needle seat. This design enables the needle seat to perform necessary displacement on the basis of maintaining a relatively stable state, thereby allowing the guide needle to be adjusted accordingly as the patient's position changes. This adaptability not only ensures the relatively stable support of the guide needle when the patient's position changes, but also improves the flexibility and accuracy of the surgical operation.

[0020] 3. In the present invention, an extrusion groove, a contact block, and an extension rod are used. When the threaded barrel is rotated, the screw rod and the connecting plate work together and move precisely to the right, thereby applying pressure to the inclined position of the contact block through the extrusion groove. This action causes the contact block, the extension rod, the cross bar, and the clamping plate to move away from the needle seat together. At the same time, the limit block is separated from the limit groove, ensuring that the contact block will not cause any impact on the needle seat during the process of pressure movement. The cleverness of this design is that it greatly simplifies the overall removal operation of the guide needle, making the process smoother and more convenient. Due to the protection of the needle seat during the operation, the safety, stability, and reliability of the operation are ensured. This design not only improves the surgical efficiency and reduces the operating steps, but also reduces the risks that may occur during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a surgical guide needle and its use method proposed by the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the connector of a surgical guide needle and its use method proposed in the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a ring frame for a surgical guide needle and a method of using the same proposed by the present invention; Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of a mobile negative pressure device for a surgical guide needle and a method of using the same proposed by the present invention; Figure 5 This is a schematic side view of a three-dimensional cross-sectional structure of a mobile negative pressure device for a surgical guide needle and a method of using the same proposed by the present invention; Figure 6 A schematic diagram of the curved suction cup structure of a surgical guide needle and a method of using the same proposed by the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of a rotation adjustment device for a surgical guide needle and a method of using the same proposed by the present invention; Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of a connecting plate of a surgical guide needle and a method of using the same proposed by the present invention; Figure 9 A surgical guide needle and a method of using the same proposed by the present invention Figure 8 A schematic diagram of the enlarged structure of part A; Figure 10 This is a schematic diagram of the three-dimensional cross-sectional structure of the movable clamping mechanism of a surgical guide needle and its use method proposed by the present invention.

[0022] Legend: 1. Needle tube; 2. Needle; 3. Needle seat; 4. Connector; 5. Ring frame; 6. Limiting groove; 7. Arc suction cup; 8. Mobile negative pressure device; 81. Gas storage frame; 82. Piston plate; 83. Piston rod; 84. Connecting sleeve; 85. Air hole; 9. Connecting plate; 10. Rotary adjustment device; 101. Screw; 102. Threaded barrel; 103. Bearing; 11. Movable clamping mechanism; 1101. Cylinder; 1102. Circular plate; 1103. Cross bar; 1104. Elastic component; 1105. Clamping plate; 1106. Limiting block; 1107. Sliding sleeve; 1108. Extension rod; 1109. Connecting seat; 1110. Contact block; 1111. Fixed seat; 12. Extrusion groove; 13. Intermediate tube. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0024] Please see the attached Figure 1 -Attached Figure 10 The present invention provides a technical solution: a surgical guide needle, comprising a needle tube 1 and an annular frame 5, a needle head 2 is provided at the right end of the needle tube 1, a needle seat 3 is connected to the left end of the needle tube 1, a connector 4 is provided at the left end of the needle seat 3, and three limiting grooves 6 are provided on the outer arc surface of the needle seat 3. The right side of the annular frame 5 is fixedly connected to three arc-shaped suction cups 7, and the left side of the annular frame 5 is fixedly connected to the position of the arc-shaped suction cup 7. The left end of the mobile negative pressure device 8 is fixedly connected to a connecting plate 9, and the right side of the connecting plate 9 is fixedly connected to a rotation adjustment device 10. The rotation adjustment device 10 is fixedly connected to the left side of the annular frame 5, and three extrusion grooves 12 are provided on the side of the connecting plate 9. A movable clamping mechanism 11 is slidably connected in the extrusion groove 12, and the movable clamping mechanism 11 is fixedly connected to the left side of the annular frame 5.

[0025] The arc-shaped suction cup 7 is used to be adsorbed on the patient's body surface to fix the annular frame 5 on the patient's body surface; Specifically, such as Figure 2-3 As shown, the positions of the three movable clamping mechanisms 11 correspond to the positions of the three limiting grooves 6 respectively, an intermediate pipe 13 is connected between the three movable clamping mechanisms 11, and the connecting plate 9 is set to be annular.

[0026] The middle pipe 13 connects the three movable clamping mechanisms 11 so that the internal spaces of the three movable clamping mechanisms 11 are connected, and gas can flow smoothly between the three movable clamping mechanisms 11 .

[0027] Specifically, such as Figure 7 As shown, the rotation adjustment device 10 includes a screw rod 101, which is fixedly connected to the right side of the connecting plate 9. The screw rod 101 is externally threaded with a threaded cylinder 102, and the threaded cylinder 102 is outer-circuited with a bearing 103, which is fixedly connected to the left side of the annular frame 5.

[0028] The threaded barrel 102 is connected to the surface of the annular frame 5 through the bearing 103 and can rotate smoothly and stably. While the threaded barrel 102 rotates, the screw rod 101 can be controlled to rotate by the thread action, thereby controlling the screw rod 101 and the connecting plate 9 to move left and right and adjust the position of the connecting plate 9.

[0029] Specifically, such as Figure 3-6 As shown, the mobile negative pressure device 8 includes an air storage frame 81, which is fixedly connected to the left side of the annular frame 5. A piston plate 82 is slidably connected to the air storage frame 81, and a piston rod 83 is fixedly connected to the left side of the piston plate 82. An air hole 85 is provided on the right side of the air storage frame 81, which passes through the annular frame 5 and the arc-shaped suction cup 7. The arc-shaped suction cup 7 is connected to the air storage cavity in the air storage frame 81 located on the right side of the piston plate 82.

[0030] The piston rod 83 is slidably connected to a connecting sleeve 84 on the outside, and the connecting sleeve 84 is connected to the left side of the gas storage frame 81. The ends of the three piston rods 83 outside the gas storage frame 81 are fixedly connected to the same connecting plate 9. The three gas storage frames 81 are equidistantly arranged on the left side of the annular frame 5.

[0031] The air hole 85 enables the air storage frame 81 to communicate with the interior of the arc-shaped suction cup 7. The screw 101 drives the connecting plate 9, the piston rod 83 and the piston plate 82 to move leftward. As the piston plate 82 moves leftward, the air in the arc-shaped suction cup 7 is sucked into the air storage frame 81 through the air hole 85. The air pressure in the arc-shaped suction cup 7 is reduced, so that the arc-shaped suction cup 7 is stably adsorbed on the surface of the patient's body, and the air pressure inside the arc-shaped suction cup 7 can be adjusted. Specifically, such as Figure 3 and Figure 8-10 As shown, the movable clamping mechanism 11 includes a cylinder 1101, a fixed seat 1111 is fixedly connected to the right side of the outer arc surface of the cylinder 1101, the fixed seat 1111 is fixedly connected to the left side of the annular frame 5, a circular plate 1102 is slidably connected inside the cylinder 1101, and the air storage chamber in the cylinder 1101 away from the needle seat 3 is connected to the intermediate tube 13.

[0032] A cross bar 1103 is fixedly connected to one side of the circular plate 1102 close to the needle seat 3, and a clamping plate 1105 is fixedly connected to one end of the cross bar 1103 close to the needle seat 3. The clamping plate 1105 is set to an arc shape, and the end of the clamping plate 1105 close to the needle seat 3 is fixedly connected to a limiting block 1106. The width of the limiting block 1106 corresponds to the width of the limiting groove 6. The limiting block 1106 can be moved into the limiting groove 6. After the limiting block 1106 enters the limiting groove 6, it can move to a certain extent along the circumferential direction.

[0033] The cross bar 1103 is slidably connected to a sliding sleeve 1107 on the outside, and the sliding sleeve 1107 is connected to the outside of the cylinder 1101. The left side of the cross bar 1103 is fixedly connected to an extension rod 1108, and the other end of the extension rod 1108 is fixedly connected to a connecting seat 1109. The connecting seat 1109 is fixedly connected to a contact block 1110 on the side close to the connecting plate 9.

[0034] The contact block 1110 is triangular in shape and is slidably connected to the extrusion groove 12 . An elastic component 1104 is fixedly connected to the side of the circular plate 1102 , and the other end of the elastic component 1104 is fixedly connected to the inner wall of the cylinder 1101 .

[0035] The extrusion groove 12 cooperates with the contact block 1110. When the extrusion groove 12 blocks the contact block 1110, the clamping plate 1105 remains separated from the needle seat 3. When the extrusion groove 12 moves close to the contact block 1110, the inclined surface can be used to control the contact block 1110 to move away from the needle seat 3. When the contact block 1110 is separated from the extrusion groove 12, the elastic component 1104 controls the circular plate 1102 to move close to the needle seat 3, and the clamping plate 1105 moves to be clamped on the surface of the needle seat 3. At the same time, the limit block 1106 is inserted into the limit groove 6 to prevent the needle seat 3 from sliding left and right. At this time, the alignment is completed. The guide needle is limited. When the guide needle moves to a certain extent, the needle seat 3 will squeeze the clamping plate 1105 to move, and will squeeze the clamping plate 1105 at the corresponding position along the overall offset direction of the guide needle. The limit block 1106 slides in the limit groove 6, and the clamping plate 1105 drives the cross bar 1103 to control the movement of the circular plate 1102. The three cylinders 1101 are connected through the middle tube 13. The gas therein will flow after being pressurized, so that the three cylinders 1101 maintain a similar air pressure, ensuring that the three clamping plates 1105 can move to a certain extent while maintaining the clamping limit of the needle seat 3.

[0036] A method for using a surgical guide needle, comprising the following steps: When the guide needle needs to be inserted, the needle 2 is directly inserted into the designated position in the patient's body, and then the annular frame 5 is pressed to make the arc-shaped suction cup 7 fit the surface of the patient's skin, and the threaded cylinder 102 is controlled to rotate. While the threaded cylinder 102 rotates, the screw rod 101 is controlled to extend, and the screw rod 101 drives the connecting plate 9, the piston rod 83 and the piston plate 82 to move to the left. While the piston plate 82 moves to the left, the gas in the arc-shaped suction cup 7 is sucked into the gas storage frame 81 through the air hole 85. The air pressure in the arc-shaped suction cup 7 is reduced, so that the arc-shaped suction cup 7 is stably adsorbed on the surface of the patient's body; When the connecting plate 9 moves to the left, the extrusion groove 12 moves away from the contact block 1110. When the contact block 1110 is separated from the extrusion groove 12, the elastic component 1104 controls the circular plate 1102 to move close to the needle seat 3, and the clamping plate 1105 moves to be clamped on the surface of the needle seat 3. At the same time, the limit block 1106 is inserted into the limit groove 6 to prevent the needle seat 3 from sliding left and right. At this time, the guide needle is limited to prevent the guide needle from loosening outward or inserting deeper. When the patient makes a small movement, the internal organs in the patient's body will squeeze the guide needle to perform a certain range of movement. At this time, the needle seat 3 will squeeze the clamping plate 1105 to move, and the clamping plate 1105 at the corresponding position will be squeezed along the overall offset direction of the guide needle. The limit block 1106 slides in the limit groove 6, and the clamping plate 1105 drives the cross bar 1103 to control the movement of the circular plate 1102. The three cylinders 1101 are connected through the intermediate tube 13. The gas therein will flow after being pressurized, so that the three cylinders 1101 maintain a similar air pressure, ensuring that the three clamping plates 1105 can move to a certain extent while maintaining the clamping limit on the needle seat 3, so that the needle seat 3 can maintain a relatively stable state and can be displaced to a certain extent.

[0037] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A surgical guide needle, comprising a needle tube (1) and an annular frame (5), characterized in that: The right end of the needle tube (1) is provided with a needle head (2), the left end of the needle tube (1) is connected to a needle seat (3), the left end of the needle seat (3) is provided with a connector (4), the outer arc surface of the needle seat (3) is provided with three limiting grooves (6), the right side of the annular frame (5) is fixedly connected to three arc-shaped suction cups (7), the left side of the annular frame (5) is fixedly connected to a movable negative pressure device (8) at a position corresponding to the arc-shaped suction cups (7), the left end of the movable negative pressure device (8) is fixedly connected to a connecting plate (9), the right side of the connecting plate (9) is fixedly connected to a rotation adjustment device (10), the rotation adjustment device (10) is fixedly connected to the left side of the annular frame (5), the side of the connecting plate (9) is provided with three extrusion grooves (12), the extrusion grooves (12) are slidably connected to a movable clamping mechanism (11), and the movable clamping mechanism (11) is fixedly connected to the left side of the annular frame (5).

2. A surgical guide needle according to claim 1, characterized in that: The positions of the three movable clamping mechanisms (11) respectively correspond to the positions of the three limiting grooves (6); an intermediate pipe (13) is connected between the three movable clamping mechanisms (11); and the connecting plate (9) is configured in a ring shape.

3. A surgical guide needle according to claim 1, characterized in that: The rotation adjustment device (10) comprises a screw rod (101), the screw rod (101) being fixedly connected to the right side of the connecting plate (9), the screw rod (101) being externally threadedly connected to a threaded barrel (102), the threaded barrel (102) being provided with a bearing (103) on its outer sleeve, and the bearing (103) being fixedly connected to the left side of the annular frame (5).

4. A surgical guide needle according to claim 1, characterized in that: The mobile negative pressure device (8) includes an air storage frame (81), the air storage frame (81) is fixedly connected to the left side of the annular frame (5), a piston plate (82) is slidably connected in the air storage frame (81), the left side of the piston plate (82) is fixedly connected to the piston rod (83), and the right side of the air storage frame (81) is provided with an air hole (85) that passes through the annular frame (5) and the arc-shaped suction cup (7), and the arc-shaped suction cup (7) is communicated with the air storage chamber located on the right side of the piston plate (82) in the air storage frame (81).

5. A surgical guide needle according to claim 4, characterized in that: The piston rod (83) is slidably connected to a connecting sleeve (84) on the outside. The connecting sleeve (84) is connected to the left side of the gas storage frame (81). One end of the three piston rods (83) located outside the gas storage frame (81) is fixedly connected to the same connecting plate (9). The three gas storage frames (81) are equidistantly arranged on the left side of the annular frame (5).

6. A surgical guide needle according to claim 2, characterized in that: The movable clamping mechanism (11) comprises a cylinder (1101), a fixing seat (1111) is fixedly connected to the right side of the outer arc surface of the cylinder (1101), the fixing seat (1111) is fixedly connected to the left side of the annular frame (5), a circular plate (1102) is slidably connected inside the cylinder (1101), and an air storage chamber in the cylinder (1101) away from the needle seat (3) is connected to the intermediate tube (13).

7. A surgical guide needle according to claim 6, characterized in that: The circular plate (1102) is fixedly connected to a cross bar (1103) on one side close to the needle seat (3), and the cross bar (1103) is fixedly connected to a clamping plate (1105) on one end close to the needle seat (3). The clamping plate (1105) is configured to be arc-shaped, and the clamping plate (1105) is fixedly connected to a limiting block (1106) on one end close to the needle seat (3). The width of the limiting block (1106) corresponds to the width of the limiting groove (6). The limiting block (1106) can be moved into the limiting groove (6). After the limiting block (1106) enters the limiting groove (6), it can move to a certain extent along the circumferential direction.

8. A surgical guide needle according to claim 7, characterized in that: The cross bar (1103) is slidably connected to a sliding sleeve (1107) on the outside, and the sliding sleeve (1107) is connected to the outside of the cylinder (1101). The left side of the cross bar (1103) is fixedly connected to an extension rod (1108), and the other end of the extension rod (1108) is fixedly connected to a connecting seat (1109). The connecting seat (1109) is fixedly connected to a contact block (1110) on a side close to the connecting plate (9).

9. A surgical guide needle according to claim 8, characterized in that: The contact block (1110) is triangular in shape and is slidably connected in the extrusion groove (12). An elastic component (1104) is fixedly connected to the side of the circular plate (1102), and the other end of the elastic component (1104) is fixedly connected to the inner wall of the cylinder (1101).

10. A method for using a surgical guide needle, according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: When the guide needle needs to be inserted, the needle (2) is directly inserted into the designated position in the patient's body, and then the annular frame (5) is pressed to make the arc-shaped suction cup (7) fit on the surface of the patient's skin, and the threaded cylinder (102) is controlled to rotate. While the threaded cylinder (102) rotates, the screw rod (101) is controlled to extend. The screw rod (101) drives the connecting plate (9), the piston rod (83) and the piston plate (82) to move to the left. While the piston plate (82) moves to the left, the gas in the arc-shaped suction cup (7) is sucked into the gas storage frame (81) through the air hole (85). The air pressure in the arc-shaped suction cup (7) is reduced, so that the arc-shaped suction cup (7) is stably adsorbed on the surface of the patient's body. When the connecting plate (9) moves to the left, the extrusion groove (12) moves away from the contact block (1110). When the contact block (1110) is separated from the extrusion groove (12), the elastic component (1104) controls the circular plate (1102) to move closer to the needle seat (3), and the clamping plate (1105) moves to be clamped on the surface of the needle seat (3). At the same time, the limit block (1106) is inserted into the limit groove (6) to prevent the needle seat (3) from sliding left and right. At this time, the guide needle is limited to prevent the guide needle from loosening outward or inserting deeper. When the patient makes a small movement, the internal organs in the patient's body will squeeze the guide needle to move to a certain extent. At this time, the needle seat (3) will squeeze the clamping plate (1105) to move, and the clamping plate (1105) at the corresponding position will be squeezed along the overall offset direction of the guide needle. The limiting block (1106) slides in the limiting groove (6), and the clamping plate (1105) drives the cross bar (1103) to control the movement of the circular plate (1102). The three cylinders (1101) are connected through the intermediate tube (13). The gas therein will flow after being compressed, so that the three cylinders (1101) maintain a similar air pressure, ensuring that the three clamping plates (1105) can move to a certain extent while maintaining the clamping limit on the needle seat (3), so that the needle seat (3) can maintain a relatively stable state and can move to a certain extent.

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