Angle locator for ablation biopsy needle puncture under CT guidance

Abstract

The present invention belongs to the technical field of angle locators for ablation biopsy needles. Disclosed is an angle locator for ablation biopsy needle puncture under CT guidance. During movement, a main gear at the outer end of a rotating rod drives a first driven gear and a second driven gear to perform linkage, so as to drive a right-hand threaded screw and a left-hand threaded screw to rotate; then during rotation, the right-hand threaded screw and the left-hand threaded screw push an abutting pad to extend outward for fixation, thereby realizing the fixation function during movement, and achieving a double-linkage function. The abutting pad also can be manually rotated to move outward and inward. By using an inner angle scanning member in cooperation with angle marking holes, the rotation angle of a biopsy needle angle adjustment member can be measured during rotation, thereby improving the rotation accuracy and also allowing quick focusing. Moreover, an alignment laser is used in cooperation with a biopsy needle placement slot, so that by correspondingly aligning the focus point of the alignment laser and the focus points of a fixed laser and a rotating laser, the function of independently adjusting a biopsy needle can be realized.

Description

An angle locator for CT-guided ablation biopsy needle puncture Technical Field

[0001] This invention relates to an angle locator for ablation biopsy needle puncture under CT guidance, belonging to the technical field of ablation biopsy needle angle locators. Background Technology

[0002] CT-guided percutaneous biopsy is one of the important methods for diagnosing the nature of deep tumors such as those in the lungs, liver, and kidneys. However, the ideal puncture angle guided by CT is often between 0 and 90 degrees from the horizontal line. This means that the operator must estimate the angle accurately to insert the needle and achieve successful puncture. Most clinicians estimate the needle angle visually, while more meticulous ones will use a protractor to draw a line or use a laser to focus. Traditional biopsy needle angle positioning devices are mostly used for manual focusing by holding a protractor or using a laser focusing device and rotating the focusing device.

[0003] For example, a percutaneous puncture medical device disclosed in application number CN103815971B includes a base, a base level, a protractor level holder, a protractor, a protractor level, an aiming cannula holder, and an aiming cannula. The base level is mounted on the base, the protractor level holder is located on the side of the base and rotatably connected to the base, the protractor level is mounted on the protractor level holder, the protractor level holder, the protractor, and the aiming cannula holder are interconnected by a connecting piece that passes through the center of the protractor, the protractor level holder is fixedly connected to the protractor, the aiming cannula holder can rotate relative to the protractor, the protractor is located between the protractor level holder and the aiming cannula holder, and the aiming cannula is mounted on the aiming cannula holder. The accuracy of the horizontal and vertical planes is controlled by the base level and the protractor level of the puncture locator. It has outstanding advantages such as accurate and reliable angle positioning, ensuring the accurate insertion angle of the puncture biopsy needle, and significantly improving the success rate of a single puncture.

[0004] Based on retrieval and analysis, it is concluded that existing technologies still have shortcomings:

[0005] 1. In the existing biopsy needle fixation device, the laser focusing angle is adjusted by manually turning a rotating part during use, which makes the operation complicated.

[0006] 2. In the use of existing biopsy needle placement and fixation devices, the movement and fixation are mostly done manually, which can lead to inaccurate laser focusing.

[0007] 3. In the use of existing biopsy needles, the compatibility of biopsy needles is relatively limited, and the biopsy needle fixing device and biopsy needle are mostly fixed structures, which makes it difficult to adjust the angle of the biopsy needle. Summary of the Invention

[0008] The main objective of this invention is to provide a multi-angle, multi-directional locator for ablation biopsy needles used under CT guidance.

[0009] The objective of this invention can be achieved by adopting the following technical solution:

[0010] An angle locator for ablation biopsy needle puncture under CT guidance includes a biopsy needle limiting rod for limiting the biopsy needle, and a biopsy needle placement groove is provided through the middle of the biopsy needle limiting rod;

[0011] A biopsy needle holder is clamped and installed in the biopsy needle placement slot. An alignment laser is installed around the outer ring of the biopsy needle placement slot. The bottom of the biopsy needle limiting rod is fixed to the bed by a moving positioning mechanism. The biopsy needle limiting rod is oscillatingly mounted on a limiting drive mechanism. The limiting drive mechanism is rotatably connected to an angle detection mechanism. A pushing mechanism is installed at the bottom of the angle detection mechanism.

[0012] The preferred movable positioning mechanism includes a movable block, a stabilizing slide bar, a rotating rod, a driving component, a pad, a positive screw, a negative screw, a driving hole, a movable hole, a main gear, a driven gear one, and a driven gear two;

[0013] The biopsy needle limiting rod is fixedly connected to the base. Stable sliding rods are fixedly installed on both sides inside the base. A rotating rod is rotatably installed in the middle of the base. Moving blocks are sleeved on the stable sliding rods and the rotating rod. The stable sliding rod passes through the drive hole on the moving block and is fixedly connected to the base. The rotating rod passes through the moving hole and is rotatably connected to the base. Main gears for linkage are installed at both ends of the rotating rod.

[0014] The main gear has two driven gears meshing on its two sides respectively. A reverse screw is installed on the outer end of the driven gear 2, and a forward screw is installed on the outer end of the driven gear 1. A pad is installed inside the forward screw and the reverse screw respectively. A driving component is installed on the base, and the output end of the driving component is rotatably connected to the rotating rod.

[0015] The preferred limiting drive mechanism includes a biopsy needle angle adjustment component, a swing groove, a swing stabilizer, an angle adjustment drive component, and a swing drive component;

[0016] The biopsy needle limiting rod is oscillatingly installed in the oscillating groove on the biopsy needle angle adjusting component. An oscillating drive component is installed on one side of the oscillating groove, and the output end of the oscillating drive component is driven and connected to the biopsy needle limiting rod. Oscillating stabilizers are installed on both sides of the oscillating groove. A limiting slider is slidably installed in the oscillating stabilizer. The other end of the limiting slider is fixedly connected to the biopsy needle limiting rod. The biopsy needle angle adjusting component is driven and connected by the angle adjusting drive component.

[0017] The preferred angle detection mechanism includes an angle detection component, a fixed laser, an angle marking groove, and a rotating laser;

[0018] The biopsy needle angle adjustment component is covered with angle detection components on both sides. An angle marking groove is opened around the outer ring of the angle detection component. The biopsy needle angle adjustment component has an inner angle scanning component corresponding to the angle marking groove. Fixed lasers are installed on both sides of the axis of the angle detection component. Rotating lasers are installed on the inner angle scanning components on both sides of the biopsy needle angle adjustment component.

[0019] The preferred pushing mechanism includes a lifting drive component, a lifting block, a sliding plate, a stabilizing groove, and a limiting block. A stabilizing groove is installed on the angle detection component, and a limiting block is fixedly installed in the stabilizing groove on the angle detection component. A sliding plate is slidably installed in the stabilizing groove, a lifting block is installed at the bottom of the sliding plate, and a lifting drive component is installed at the bottom of the lifting block.

[0020] The preferred type of screws, both positive and negative, push the pads outward.

[0021] Preferably, the driving component drives the rotating rod and the main gear to rotate, and the main gear drives the driven gear one and driven gear two to rotate and connect.

[0022] Preferably, the biopsy needle limiting rod is connected by a limiting slider that swings along the swing stabilizer inside the biopsy needle angle adjusting component.

[0023] Preferably, the biopsy needle angle adjustment component is rotatably connected along the angle detection component, and the inner angle scanning component is used in conjunction with the angle marking groove.

[0024] Preferably, the sliding plate on the lifting block is slidably connected along the stabilizing groove, and the sliding plate is limited by the limiting block.

[0025] Preferably, the lifting drive component drives the lifting block and the angle detection component to move up and down.

[0026] Beneficial technical effects of the present invention:

[0027] This invention provides an angle locator for ablation biopsy needle puncture under CT guidance. The base contains a stabilizing slide rod and a rotating rod. A driving component is installed on the outer side of the base. The driving component drives the rotating rod to rotate, which in turn causes a moving block to move laterally. During the rotation of the rotating rod, the moving block moves along the stabilizing slide rod and the rotating rod within the base. During this movement, the main gear at the outer end of the rotating rod drives two driven gears to rotate, causing the positive and negative screws to rotate. The positive and negative screws push the abutment to extend outwards for fixation during rotation, achieving a fixation function during movement and realizing a dual-linkage function. The abutment can also be manually rotated outwards and inwards, achieving an automated movement function.

[0028] A lifting block is installed on the movable block, and angle detection components are installed on both sides of the lifting block. An angle detection component has an angle marking groove. A fixed laser is installed in the middle of the angle detection component. A biopsy needle angle adjustment component is rotatably installed inside the angle detection component. An inner angle scanning component is installed on the biopsy needle angle adjustment component. A rotating laser is installed on the inner angle scanning component. During the swinging process of the biopsy needle angle adjustment component, the rotating laser and the fixed laser cooperate to achieve the focusing function. By using the inner angle scanning component in conjunction with the angle marking groove, the biopsy needle angle adjustment component can measure the rotation angle during rotation, improving rotation accuracy and enabling rapid focusing.

[0029] A biopsy needle limiting rod is oscillatingly installed in the oscillating groove on the biopsy needle angle adjustment component. A movable clamping device is installed in the biopsy needle limiting rod. An oscillating drive component is installed on the biopsy needle angle adjustment component. The oscillating drive component is driven and connected to the biopsy needle limiting rod. An alignment laser is installed on the outer ring of the biopsy needle placement groove. The alignment laser is used in conjunction with the biopsy needle placement groove. By connecting the alignment laser with the focus points of the fixed laser and the rotating laser, the function of individually adjusting the biopsy needle is realized.

[0030] A swing stabilizer is installed on the biopsy needle angle adjustment component. A limit slider is slidably installed inside the swing stabilizer. The limit slider is fixedly connected to the biopsy needle limit rod. The biopsy needle limit rod is slidably connected to the swing stabilizer. A stabilizing groove is installed on the outer side of the angle detection component. A sliding plate is slidably installed inside the stabilizing groove. The bottom of the sliding plate is fixedly connected to the lifting block. The lifting of the lifting block drives the sliding plate to rise and fall along the stabilizing groove. The sliding of the sliding plate along the stabilizing groove improves the lifting stability of the lifting block, angle detection component, biopsy needle angle adjustment component, and biopsy needle limit rod. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the overall three-dimensional structure of a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention.

[0032] Figure 2 is a schematic diagram of the base of a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention;

[0033] Figure 3 is a schematic diagram of the moving structure of a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention;

[0034] Figure 4 is a schematic diagram of a preferred embodiment of a movement angle monitoring structure for an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention.

[0035] Figure 5 is a schematic diagram of the stable rotation of a biopsy needle according to a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention.

[0036] Figure 6 is a schematic diagram of the rotation limit of a biopsy needle according to a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention.

[0037] Figure 7 is an overall top view of a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention;

[0038] Figure 8 is an enlarged view of section A of a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention;

[0039] Figure 9 is a schematic diagram of angle monitoring of a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention;

[0040] Figure 10 is a side view of the overall structure of a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention.

[0041] Figure 11 is a schematic diagram of the moving linkage structure of a preferred embodiment of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention.

[0042] Figure 12 is a side view of a preferred embodiment of a movable linkage structure of an angle locator for ablation biopsy needle puncture under CT guidance according to the present invention.

[0043] In the diagram: 1. Base; 2. Moving block; 3. Stabilizing slide bar; 4. Rotating rod; 5. Driving component; 6. Support pad; 7. Positive screw; 8. Negative screw; 9. Lifting driving component; 10. Lifting block; 11. Slide plate; 12. Stabilizing groove; 13. Angle detection component; 14. Fixed laser; 15. Angle marking groove; 16. Rotating laser; 17. Swing groove; 18. Swing stabilizing component; 19. Biopsy needle limiting rod; 20. Biopsy needle placement groove; 21. Alignment laser; 22. Driving hole; 23. Moving hole; 24. Inner angle scanning component; 25. Biopsy needle angle adjusting component; 26. Angle adjustment driving component; 27. Limiting slider; 28. Swing driving component; 29. ​​Biopsy needle fixing component; 30. Limiting block; 31. Main gear; 32. Slave gear one; 33. Slave gear two. Detailed Implementation

[0044] To enable those skilled in the art to understand the technical solution of the present invention more clearly, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0045] As shown in Figures 1-12, this embodiment provides an angle locator for ablation biopsy needle puncture under CT guidance, including a biopsy needle limiting rod 19 for limiting the biopsy needle, and a biopsy needle placement groove 20 is provided through the middle of the biopsy needle limiting rod 19.

[0046] A biopsy needle holder 29 is clamped and installed in the biopsy needle placement slot 20. An alignment laser 21 is installed around the outer ring of the biopsy needle placement slot 20. The bottom of the biopsy needle limiting rod 19 is fixedly installed to the bed by a moving positioning mechanism. The biopsy needle limiting rod 19 is oscillatingly installed on the limiting drive mechanism. The limiting drive mechanism is rotatably connected to the angle detection mechanism. A pushing mechanism is installed at the bottom of the angle detection mechanism.

[0047] The moving positioning mechanism includes a moving block 2, a stabilizing slide bar 3, a rotating rod 4, a driving component 5, a pad 6, a positive screw 7, a negative screw 8, a driving hole 22, a moving hole 23, a main gear 31, a driven gear one 32, and a driven gear two 33;

[0048] The biopsy needle limiting rod 19 is fixedly connected to the base 1. The base 1 has a stabilizing slide rod 3 fixedly installed on both sides. The base 1 has a rotating rod 4 rotatably installed in the middle. The stabilizing slide rod 3 and the rotating rod 4 are fitted with a moving block 2. The stabilizing slide rod 3 passes through the drive hole 22 on the moving block 2 and is fixedly connected to the base 1. The rotating rod 4 passes through the moving hole 23 and is rotatably connected to the base 1. The two ends of the rotating rod 4 are respectively equipped with a main gear 31 for linkage.

[0049] The main gear 31 is meshed with a driven gear 1 32 and a driven gear 2 33 on both sides respectively. A reverse screw 8 is installed on the outer end of the driven gear 2 33, and a forward screw 7 is installed on the outer end of the driven gear 1 32. A pad 6 is rotatably installed inside the forward screw 7 and the reverse screw 8 respectively. A driving component 5 is installed on the base 1, and the output end of the driving component 5 is rotatably connected to the rotating rod 4.

[0050] The limit drive mechanism includes a biopsy needle angle adjustment component 25, a swing groove 17, a swing stabilizer 18, an angle adjustment drive component 26, and a swing drive component 28;

[0051] The biopsy needle limiting rod 19 is oscillatingly installed in the oscillating groove 17 on the biopsy needle angle adjusting component 25. An oscillating drive component 28 is installed on one side of the oscillating groove 17. The output end of the oscillating drive component 28 is driven and connected to the biopsy needle limiting rod 19. Oscillating stabilizers 18 are installed on both sides of the oscillating groove 17. A limiting slider 27 is slidably installed in the oscillating stabilizer 18. The other end of the limiting slider 27 is fixedly connected to the biopsy needle limiting rod 19. The biopsy needle angle adjusting component 25 is driven and connected by the angle adjusting drive component 26.

[0052] The angle detection mechanism includes an angle detection component 13, a fixed laser 14, an angle marking groove 15, and a rotating laser 16;

[0053] The biopsy needle angle adjustment component 25 is covered by angle detection components 13 on both sides. Angle marking grooves 15 are opened around the outer ring of the angle detection components 13. The biopsy needle angle adjustment component 25 has an inner angle scanning component 24 corresponding to the angle marking grooves 15. Fixed lasers 14 are installed on both sides of the axis of the angle detection components 13. Rotating lasers 16 are installed on the inner angle scanning components 24 on both sides of the biopsy needle angle adjustment component 25.

[0054] The pushing mechanism includes a lifting drive component 9, a lifting block 10, a sliding plate 11, a stabilizing groove 12, and a limiting block 30. The angle detection component 13 is equipped with a stabilizing groove 12. The limiting block 30 is fixedly installed in the stabilizing groove 12 on the angle detection component 13. The sliding plate 11 is slidably installed in the stabilizing groove 12. The lifting block 10 is installed at the bottom of the sliding plate 11. The lifting drive component 9 is installed at the bottom of the lifting block 10.

[0055] The forward screw 7 and the reverse screw 8 push the abutment 6 outward.

[0056] The driving component 5 drives the rotating rod 4 and the main gear 31 to rotate, and the main gear 31 drives the driven gear 1 32 and the driven gear 2 33 to rotate and connect.

[0057] The biopsy needle limiting rod 19 is oscillatingly connected by the limiting slider 27 along the swing stabilizer 18 inside the biopsy needle angle adjusting member 25.

[0058] The biopsy needle angle adjustment component 25 is rotatably connected along the angle detection component 13, and the inner angle scanning component 24 is used in conjunction with the angle marking groove 15.

[0059] The slide plate 11 on the lifting block 10 is slidably connected along the stabilizing groove 12, and the slide plate 11 is limited by the limiting block 30.

[0060] The lifting drive component 9 pushes the lifting block 10 and the angle detection component 13 to lift and connect.

[0061] As shown in Figures 1-12, the working process of the angle locator for ablation biopsy needle puncture under CT guidance provided in this embodiment is as follows: Connect the device to the power supply. Start the angle marking slot 15 to rotate the rotating rod 4. During the rotation of the rotating rod 4, the moving block 2 moves along the stable sliding rod 3 and the rotating rod 4 within the base 1. During this movement, the main gear 31 at the outer end of the rotating rod 4 drives the driven gear 1 32 and driven gear 2 33 to rotate, causing the positive screw 7 and the negative screw 8 to rotate. During rotation, the positive screw 7 and the negative screw 8 push the pad 6 outwards to fix it at the bed position. After the base 1 is fixed, start the fixing laser 14, rotate the laser 16, and align the laser 21. After opening, the biopsy needle angle adjustment component 25 is driven by the drive component to rotate along the angle detection component 13. The biopsy needle limiting rod 19 is driven by the swing drive component 28 to swing back and forth. During the rotation of the angle marking groove 15, it cooperates with the fixed laser 14 on the angle detection component 13 to focus and accurately measure the focus point, realizing multi-directional angle adjustment. During the adjustment process, the rotation angle can be automatically and accurately measured. The angle of the biopsy needle can be swung separately. During the swing, it is reinforced by the swing stabilizer 18, the slide plate 11 and the stabilizing groove 12. The height is adjusted by the lifting drive component 9 pushing the lifting block 10. Lateral movement is achieved by the moving block 2, the stabilizing slide rod 3 and the rotating rod 4. This device can realize the function of moving and focusing in the X, Y and Z axes.

[0062] Example 1

[0063] As shown in Figures 1, 11, and 12, a stabilizing slide rod 3 and a rotating rod 4 are distributed inside the base 1. A driving component 5 is installed on the outside of the base 1. The driving component 5 drives the rotating rod 4 to rotate, which in turn drives the moving block 2 to move laterally. During the rotation of the rotating rod 4, the moving block 2 moves along the stabilizing slide rod 3 and the rotating rod 4 inside the base 1. During the movement, the main gear 31 at the outer end of the rotating rod 4 drives the driven gear 1 32 and driven gear 2 33 to rotate, which in turn drives the positive screw 7 and the negative screw 8 to rotate. During the rotation, the positive screw 7 and the negative screw 8 push the pad 6 to extend outward for fixation, realizing the function of fixation during movement and achieving a double linkage function. The pad 6 can also be manually rotated to move outward and inward, realizing the function of automated movement.

[0064] Example 2

[0065] As shown in Figures 1-12, a lifting block 10 is installed on the moving block 2. Angle detection components 13 are installed on both sides of the lifting block 10. An angle marking groove 15 is opened on the angle detection component 13. A fixed laser 14 is installed in the middle of the angle detection component 13. A biopsy needle angle adjusting component 25 is rotatably installed inside the angle detection component 13. An inner angle scanning component 24 is installed on the biopsy needle angle adjusting component 25. A rotating laser 16 is installed on the inner angle scanning component 24. During the swinging process of the biopsy needle angle adjusting component 25, the rotating laser 16 cooperates with the fixed laser 14 to achieve the focusing function. By using the inner angle scanning component 24 in conjunction with the angle marking groove 15, the biopsy needle angle adjusting component 25 can measure the rotation angle during the rotation process, improving the rotation accuracy and enabling rapid focusing.

[0066] Example 3

[0067] As shown in Figures 1-12, a biopsy needle limiting rod 19 is oscillatingly installed in the oscillating groove 17 on the biopsy needle angle adjusting component 25. A movable 29 is installed in the biopsy needle limiting rod 19, which can clamp the biopsy needle. An oscillating drive component 28 is installed on the biopsy needle angle adjusting component 25. The oscillating drive component 28 is driven and connected to the biopsy needle limiting rod 19. An alignment laser 21 is installed on the outer ring of the biopsy needle placement groove 20. The alignment laser 21 is used in conjunction with the biopsy needle placement groove 20. By connecting the alignment laser 21 with the focus points of the fixed laser 14 and the rotating laser 16, the function of individually adjusting the biopsy needle is realized.

[0068] Example 4

[0069] As shown in Figures 1-12, a swing stabilizer 18 is installed on the biopsy needle angle adjusting component 25. A limit slider 27 is slidably installed inside the swing stabilizer 18. The limit slider 27 is fixedly connected to the biopsy needle limiting rod 19. The biopsy needle limiting rod 19 is slidably connected to the swing stabilizer 18 via 27. A stabilizing groove 12 is installed on the outer side of the angle detection component 13. A sliding plate 11 is slidably installed inside the stabilizing groove 12. The bottom of the sliding plate 11 is fixedly connected to the lifting block 10. The lifting of the lifting block 10 drives the sliding plate 11 to rise and fall along the stabilizing groove 12. The sliding of the sliding plate 11 along the stabilizing groove 12 improves the lifting stability of the lifting block 10, the angle detection component 13, the biopsy needle angle adjusting component 25, and the biopsy needle limiting rod 19.

[0070] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. An angle locator for ablation biopsy needle puncture under CT guidance, comprising a biopsy needle limiting rod (19) for limiting the biopsy needle, wherein a biopsy needle placement groove (20) is provided through the middle of the biopsy needle limiting rod (19); characterized in that A biopsy needle holder (29) is clamped and installed in the biopsy needle placement slot (20). An alignment laser (21) is installed around the outer ring of the biopsy needle placement slot (20). The bottom of the biopsy needle limiting rod (19) is fixedly installed to the bed by a moving positioning mechanism. The biopsy needle limiting rod (19) is swung and installed on the limiting drive mechanism. The limiting drive mechanism is rotatably connected to the angle detection mechanism. A pushing mechanism is installed at the bottom of the angle detection mechanism.

2. An angle positioner for CT-guided ablation biopsy needle puncture according to claim 1, characterized in that: The moving positioning mechanism includes a moving block (2), a stabilizing slide bar (3), a rotating rod (4), a driving component (5), a pad (6), a positive screw (7), a negative screw (8), a driving hole (22), a moving hole (23), a main gear (31), a driven gear one (32), and a driven gear two (33); The biopsy needle limiting rod (19) is fixedly connected to the base (1). The base (1) has a stabilizing slide rod (3) fixedly installed on both sides. The base (1) has a rotating rod (4) rotatably installed in the middle. The stabilizing slide rod (3) and the rotating rod (4) are fitted with a moving block (2). The stabilizing slide rod (3) passes through the drive hole (22) on the moving block (2) and is fixedly connected to the base (1). The rotating rod (4) passes through the moving hole (23) and is rotatably connected to the base (1). The two ends of the rotating rod (4) are respectively equipped with a main gear (31) for linkage. The main gear (31) is meshed with a driven gear one (32) and a driven gear two (33) on both sides respectively. A reverse screw (8) is installed on the outer end of the driven gear two (33), and a forward screw (7) is installed on the outer end of the driven gear one (32). A pad (6) is rotatably installed inside the forward screw (7) and the reverse screw (8). A drive component (5) is installed on the base (1), and the output end of the drive component (5) is rotatably connected to the rotating rod (4).

3. An angle positioner for CT-guided ablation biopsy needle puncture according to claim 2, characterized in that: The limit drive mechanism includes a biopsy needle angle adjustment component (25), a swing groove (17), a swing stabilizer (18), an angle adjustment drive component (26), and a swing drive component (28); The biopsy needle limiting rod (19) is oscillatingly installed in the oscillating groove (17) on the biopsy needle angle adjusting component (25). An oscillating drive component (28) is installed on one side of the oscillating groove (17). The output end of the oscillating drive component (28) is driven and connected to the biopsy needle limiting rod (19). Oscillating stabilizers (18) are installed on both sides of the oscillating groove (17). A limiting slider (27) is slidably installed in the oscillating stabilizer (18). The other end of the limiting slider (27) is fixedly connected to the biopsy needle limiting rod (19). The biopsy needle angle adjusting component (25) is driven and connected by the angle adjusting drive component (26).

4. An angle positioner for CT-guided ablation biopsy needle puncture according to claim 3, characterized in that: The angle detection mechanism includes an angle detection component (13), a fixed laser (14), an angle marking groove (15), and a rotating laser (16); The biopsy needle angle adjustment component (25) is covered by angle detection components (13) on both sides. An angle marking groove (15) is opened around the outer ring of the angle detection component (13). The biopsy needle angle adjustment component (25) has an inner angle scanning component (24) corresponding to the angle marking groove (15). Fixed lasers (14) are installed on both sides of the axis of the angle detection component (13). Rotating lasers (16) are installed on the inner angle scanning components (24) on both sides of the biopsy needle angle adjustment component (25).

5. An angle positioner for CT-guided ablation biopsy needle puncture according to claim 4, characterized in that: The pushing mechanism includes a lifting drive (9), a lifting block (10), a sliding plate (11), a stabilizing groove (12), and a limiting block (30). The angle detection component (13) is equipped with a stabilizing groove (12). The limiting block (30) is fixedly installed in the stabilizing groove (12) on the angle detection component (13). The sliding plate (11) is slidably installed in the stabilizing groove (12). The lifting block (10) is installed at the bottom of the sliding plate (11). The lifting drive (9) is installed at the bottom of the lifting block (10).

6. An angle positioner for CT-guided ablation biopsy needle puncture according to claim 5, characterized in that: The positive screw (7) and the negative screw (8) push the pad (6) outward.

7. An angle positioner for CT-guided ablation biopsy needle puncture according to claim 6, characterized in that: The driving component (5) drives the rotating rod (4) and the main gear (31) to rotate, and the main gear (31) drives the driven gear one (32) and driven gear two (33) to rotate and connect.

8. An angle positioner for CT-guided ablation biopsy needle puncture according to claim 7, characterized in that: The biopsy needle limiting rod (19) is oscillatingly connected by the limiting slider (27) along the swing stabilizer (18) inside the biopsy needle angle adjusting member (25).

9. An angular positioner for use in CT-guided ablation biopsy needle puncture according to claim 8, characterized in that: The biopsy needle angle adjustment component (25) is rotatably connected along the angle detection component (13), and the inner angle scanning component (24) is used in conjunction with the angle marking groove (15).

10. An angular positioner for use in CT-guided ablation biopsy needle puncture according to claim 9, characterized in that: The slide plate (11) on the lifting block (10) is slidably connected along the stabilizing groove (12), and the slide plate (11) is limited by the limiting block (30).

11. An angular positioner for use in CT-guided ablation biopsy needle puncture according to claim 9, characterized in that: The lifting drive component (9) pushes the lifting block (10) and the angle detection component (13) to lift and connect.

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