Pulmonary nodule puncture and ablation positioning device

Abstract

The invention discloses a pulmonary nodule puncture and ablation positioning device, and belongs to the technical field of pulmonary nodule puncture. Comprising mounting plates which are symmetrically arranged, vertical rods are arranged on the mounting plates, one ends of the vertical rods are fixed to the mounting plates, a transverse rod is arranged at the other ends of the vertical rods, the two ends of the transverse rod are fixed to the other ends of the two vertical plates respectively, and the transverse rod is sleeved with a sliding sleeve; a plurality of protruding edges are arranged on the outer surface of the transverse rod in the length direction, a plurality of grooves matched with the protruding edges are formed in the inner side face of the sliding sleeve and are connected to the protruding edges in a sliding mode, first sliding rods are symmetrically arranged on the sliding sleeve and are parallel to the mounting plate, and the first sliding rods are connected to the sliding sleeve in a sliding mode. One end of each first sliding rod is fixed to the sliding sleeve, the two first sliding rods are each provided with a sliding ring, and the sliding rings are arranged on the first sliding rods in a sleeving mode. According to the technical scheme, positioning and puncture path guiding are provided for puncture operation, and the puncture effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pulmonary nodule puncture, and in particular relates to a pulmonary nodule puncture and ablation positioning device. Background Art

[0002] Pulmonary nodules refer to nodular or spherical granulations observed in the patient's lungs using synchronous CT imaging technology. Before treating them nowadays, it is generally necessary to perform a puncture biopsy using a corresponding puncture needle to determine the pathological state of the pulmonary nodules before proceeding to the next step of treatment. During the treatment process, the nodules need to be treated through ablation.

[0003] However, in the prior art, doctors usually rely on experience to perform puncture operations on patients using puncture needles or ablators to achieve sampling and treatment. However, the stability of such puncture operations is affected by the intensity of the work, and thus cannot guarantee a good puncture effect for every patient. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a lung nodule puncture and ablation positioning device to provide positioning and puncture path guidance for the puncture operation and improve the puncture effect.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a lung nodule puncture and ablation positioning device, including symmetrically arranged mounting plates, each of which is provided with a vertical rod, one end of the vertical rod is fixed to the mounting plate, and the other end of the vertical rod is provided with a cross rod, and the two ends of the cross rod are respectively fixed to the other ends of the two vertical plates, and a sliding sleeve is sleeved on the cross rod, and the outer surface of the cross rod is provided with a plurality of ridges along the length direction, and the inner side surface of the sliding sleeve is provided with a plurality of grooves matching the ridges, and the grooves are slidably connected to the ridges, and the sliding sleeve is symmetrically provided with a first sliding rod, and the first sliding rod is arranged parallel to the mounting plate, and the first sliding rod One end is fixed on the sliding sleeve, and the two first sliding rods are each provided with a slip ring, and the slip ring is sleeved on the first sliding rod. A rotating cylinder is provided between the two slip rings, and both ends of the rotating cylinder are rotatably connected to the slip ring, and the rotating cylinder is provided with a through hole for limiting the needle for treating lung nodules. The sliding sleeve is also provided with a vertical plate, and the vertical plate is arranged perpendicular to the mounting plate. A slide plate is provided on the vertical plate, and the slide plate is slidably connected to the vertical plate. The slide plate is located directly above the first sliding rod, and a laser locator is provided on the end of the slide plate facing the rotating cylinder, and the laser locator is universally connected to the end of the slide plate.

[0007] The cam is an L-shaped member which has a first end fixed to the side panel that is located adjacent to the first slide block and a second end of the L-shaped member which has a first end fixed to the side panel that is adjacent to the first slide block.

[0008] Furthermore, the adjustment structure includes a first gear and a second gear that are meshed together, the first gear is fixed to one end of the rotating shaft that is rotatably connected to the L-shaped rod, a locking bolt is provided in the middle of the second gear, the second gear is sleeved on the locking bolt, and the threaded end of the locking bolt is threadedly connected to the L-shaped rod.

[0009] Furthermore, the locking mechanism includes a screw and a nut, the nut is fixed on the baffle, the screw is threadedly connected to the nut, and the threaded end of the screw is rotatably connected to the slider.

[0010] Furthermore, the two vertical poles are provided with external threads, the vertical poles are sleeved with mounting rings, the two mounting rings are provided with connecting rods, one ends of the two connecting rods are respectively fixed on the mounting rings, the other ends of the two connecting rods are provided with chest pressure rings, the outer surfaces of the chest pressure rings are fixed on the other ends of the two connecting rods, and the vertical poles are provided with second threaded sleeves for pressing the mounting ring downwards.

[0011] Furthermore, a buffer spring is provided between the second threaded sleeve and the mounting ring, and the buffer spring is sleeved on the vertical pole.

[0012] Furthermore, both mounting plates are provided with fixing elements, and the fixing elements are used to fix the mounting plates to the two side surfaces of the operating bed.

[0013] Furthermore, the chest compression ring is sleeved with an annular airbag.

[0014] Furthermore, the chest compression ring is composed of two staggered semicircular rings, and the outer sides of the closed ends of the two semicircular rings are respectively fixed on two connecting rods, and the connecting rods are telescopic rods.

[0015] Furthermore, a conical cylinder is provided inside the guide ring, a plurality of through grooves are provided on the outer wall of the conical cylinder, the outer wall of the conical cylinder is in contact with the inner end surface of the guide ring, an upper fixing ring is provided on the large diameter end of the conical cylinder, a lower fixing ring is provided on the end of the guide ring, and a plurality of upper magnets and lower magnets are respectively circumferentially provided on the surfaces of the upper fixing ring and the lower fixing ring which are arranged opposite to each other.

[0016] The beneficial effects of the present invention are:

[0017] This technical solution can mark and locate the puncture on the chest cavity through the setting of a laser locator. At the same time, the setting of a guide ring, in conjunction with the use of a laser locator, can plan and guide the puncture path, thereby improving the stability and accuracy of the puncture.

[0018] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0020] Figure 1 It is a three-dimensional schematic diagram of the lung nodule puncture and ablation positioning device of the present invention;

[0021] Figure 2 A three-dimensional schematic diagram of the lung nodule puncture and ablation positioning device of the present invention from another perspective;

[0022] Figure 3 It is a schematic diagram of the lung nodule puncture and ablation positioning device of the present invention acting on the chest cavity;

[0023] Figure 4 For the present invention Figure 2 A local enlarged schematic diagram of the middle A;

[0024] Figure 5 For the present invention Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure 6 For the present invention Figure 2 A partial enlarged schematic diagram of point C in the middle;

[0026] Figure 7 It is a schematic cross-sectional view of a tapered cylinder arranged on the guide ring of the present invention.

[0027] The following are marked in the accompanying drawings:

[0028] 1. Mounting plate; 2. Vertical pole; 3. Cross bar; 4. Raised ridge; 5. Sliding sleeve; 6. First slide bar; 7. Slip ring; 8. Rotating cylinder; 9. Vertical plate; 10. Laser locator; 11. Needle for treating lung nodules; 12. Mounting ring; 13. Connecting rod; 14. Thoracic compression ring; 15. Buffer spring; 16. Second threaded sleeve; 17. Second slide bar; 18. Sliding block; 19. L-shaped rod; 20. First threaded sleeve; 21. Screw; 22. Baffle; 23. Nut; 24. Rotating shaft; 25. Guide ring; 26. First gear; 27. Second gear; 28. Locking bolt; 29. ​​Slide plate; 30. Conical cylinder; 31. Through groove; 32. Upper fixing plate; 33. Lower fixing plate; 34. Upper magnet; 35. Lower magnet. DETAILED DESCRIPTION

[0029] like Figure 1 to Figure 6 As shown, a lung nodule puncture and ablation positioning device includes a symmetrically arranged (also understandable as a side-by-side arrangement) mounting plate 1, each mounting plate 1 is provided with a vertical rod 2, one end of the vertical rod 2 is fixed to the mounting plate 1, and the other end of the vertical rod 2 is provided with a cross bar 3, both ends of the cross bar 3 are respectively fixed to the other ends of two vertical plates 9, a sliding sleeve 5 is sleeved on the cross bar 3, a plurality of convex ridges 4 are provided on the outer surface of the cross bar 3 along the length direction, a plurality of grooves matching the convex ridges 4 are provided on the inner side surface of the sliding sleeve 5, and the grooves are slidably connected to the convex ridges 4, and the convex ridges 4 and the grooves are arranged to limit the rotation of the sliding sleeve 5 so that it can only slide on the cross bar 3, and a first sliding rod 6 is symmetrically arranged on the sliding sleeve 5, and the first sliding rod 6 is arranged parallel to the length direction of the mounting plate 1 (also understandable as parallel to the length of the operating bed). The first slide bar 6 is fixed on the sliding sleeve 5, and the two first slide bars 6 are provided with slip rings 7, which are sleeved on the first slide bar 6. A rotating cylinder 8 is provided between the two slip rings 7. The two ends of the rotating cylinder 8 are rotatably connected to the slip rings 7, and the rotating cylinder 8 is provided with a through hole for limiting the needle 11 for treating lung nodules. The sliding sleeve 5 is also provided with a vertical plate 9, which is arranged perpendicular to the mounting plate 1. A slide plate 29 is provided on the vertical plate 9, and the slide plate 29 is slidably connected to the vertical plate 9. The slide plate 29 is located directly above the first slide bar 6, and a laser locator 10 is provided on the end of the slide plate 29 facing the rotating cylinder 8. The laser locator 10 is universally connected to the end of the slide plate 29.

[0030] The working principle of the above technical solution is:

[0031] When it is necessary to perform puncture and ablation of lung nodules on the patient, the patient first lies on the operating table, and then the position of the lung nodule is located by the instrument (CT), and then the entry position of the puncture needle or the ablation needle from the patient's chest skin is confirmed, and the slide plate 29 slides on the bottom plate to change the lateral position of the laser locator 10, and the inclination angle of the laser locator 10 is changed in conjunction with the universal connection of the laser locator 10, so that the puncture movement route of the puncture needle or the ablation needle can be planned according to the length and puncture angle of the puncture needle or the ablation needle. After the position is determined, the laser locator 10 emits a laser to specify and mark the position of the chest puncture, and finally the puncture needle or the ablation needle is placed in the through hole of the rotating cylinder 8. The inclination angle and position of the puncture needle are adjusted by the rotation of the rotating cylinder 8 and the movement of the slip ring 7, and then the needle tip is pointed to the marked point of the laser locator 10 to perform the puncture operation.

[0032] The setting of the rotating cylinder 8 can provide certain support and limit for the puncture needle or ablation needle, which can free the operator's hands to a certain extent, making it easier to operate the puncture needle or ablation needle. At the same time, it can also improve the movement stability of the puncture needle or ablation needle when it penetrates the chest cavity during puncture, and the puncture operation can be performed more accurately by pointing to the puncture position through laser positioning.

[0033] At the same time, the advantage of using the laser locator 10 to mark the puncture position on the skin in the present technical solution is that the landing point of the laser will not move with the expansion and contraction of the skin when the chest rises and falls, so that the puncture point is marked more accurately. If a marker pen or other methods are used to mark the skin, it will be affected by the rise and fall of the chest.

[0034] In an operative manner, a second slide bar 17 is symmetrically arranged on the surface of the sliding sleeve 5, one end of the second slide bar 17 is fixed to the sliding sleeve 5, the second slide bar 17 and the first slide bar 6 are arranged opposite to each other, a baffle 22 is arranged on the other end of the second slide bar 17, a slider 18 is sleeved on the second slide bar 17, at least one L-shaped rod 19 is arranged on the slider 18, the vertical portion of the L-shaped rod 19 is slidably connected to the slider 18, and the vertical portion of the L-shaped rod 19 is provided with a first threaded sleeve 20 threadedly connected thereto. The first threaded sleeve 20 is located on the upper surface of the slider 18, the transverse portion of the L-shaped rod 19 is arranged toward the direction of the rotating cylinder 8, a rotating shaft 24 is provided on the transverse portion of the L-shaped rod 19, one end of the rotating shaft 24 is rotatably connected to the L-shaped rod 19, a guide ring 25 fixedly connected to the rotating shaft 24 is provided on the rotating shaft 24, an adjustment mechanism for adjusting the inclination angle of the guide ring 25 is provided on the end of the rotating shaft 24 and the transverse portion of the L-shaped rod 19, and a locking mechanism for adjusting and locking the position of the slider 18 is provided on the baffle 22.

[0035] When performing the puncture operation, the guide ring 25 is moved to the specified position and rotated to a certain inclination angle by moving the slider 18, rotating the shaft 24 and changing the height of the L-shaped rod 19. Then the light source emitted by the laser locator 10 passes through the guide ring 25 and lands on the puncture point of the chest skin, thereby constructing a puncture path to guide and support the movement of the puncture needle and the ablation needle, further improving the stability and accuracy of the puncture.

[0036] At the same time, it is not difficult to understand that the inclination angle of the puncture needle or ablation needle entering the chest cavity is first displayed and planned through the instrument, and then when the inclination of the guide ring 25 is adjusted, the inclination between it and the chest cavity should match the planned inclination during puncture, and then the puncture starting point is determined by the laser locator 10. Later, during the puncture operation, the puncture needle or ablation needle is placed in the guide ring 25, that is, the self-generated inclination angle of the guide ring 25 will guide the movement of the puncture needle or ablation needle, so that it can perform the puncture operation according to the planned inclination angle, further improving the stability and accuracy of the puncture operation.

[0037] It should be noted that in this specific embodiment, two L-shaped rods 19 are provided, that is, the two ends of the rotating shaft 24 are respectively fixed on two L-shaped rods 19. Compared with one L-shaped rod 19 supporting and installing the guide ring 25, the support and installation stability of two L-shaped rods 19 is stronger.

[0038] In one practicable manner, the adjustment structure includes a first gear 26 and a second gear 27 that are meshed together. The first gear 26 is fixed to one end of the rotating shaft 24 that is rotatably connected to the L-shaped rod 19. A locking bolt 28 is provided in the middle of the second gear 27. The second gear 27 is sleeved on the locking bolt 28, and the threaded end of the locking bolt 28 is threadedly connected to the L-shaped rod 19. When adjusting the tilt angle, the locking bolt 28 is first loosened to allow the first gear 26 and the second gear 27 to rotate relative to each other. When the tilt angle is adjusted to the right position, the second gear 27 is pressed against the L-shaped rod 19 by the locking bolt 28 to limit its rotation, and the rotation of the first gear 26 is also limited. At this time, the tilt angle of the guide ring 25 is fixed and no rotation will occur. This structural setting can not only realize the angle adjustment of the rotating shaft 24, but also lock and fix the adjusted angle.

[0039] In one feasible manner, the locking mechanism includes a screw 21 and a nut 23, the nut 23 is fixed on the baffle 22, the screw 21 is threadedly connected to the nut 23, and the threaded end of the screw 21 is rotatably connected to the slider 18. By rotating the screw 21, the slider 18 can be driven to move on the second slider 17, thereby realizing the lateral movement of the guide ring 25, and then moving the wire loop to the specified position. At the same time, when the screw 21 is not rotated, the screw 21 and the thread are self-locking, that is, the slider 18 will not move, further ensuring the stability of the guide ring 25 after being adjusted to the specified position.

[0040] In an practicable manner, both upright poles 2 are provided with external threads, both upright poles 2 are sleeved with mounting rings 12, both mounting rings 12 are provided with connecting rods 13, one end of the two connecting rods 13 is respectively fixed on the mounting rings 12, and the other end of the two connecting rods 13 is provided with a chest compression ring 14, the outer surface of the chest compression ring 14 is fixed on the other end of the two connecting rods 13, and the upright pole 2 is provided with a second threaded sleeve 16 for pressing the mounting ring 12 downward, and the chest compression ring 14 is pressed against the chest around the puncture site of the patient by the movement and pressing of the second threaded sleeve 16, thereby limiting and stabilizing the ups and downs of the ribs in the chest when the patient breathes, and avoiding the problem of the puncture site being offset when the chest fluctuates greatly. That is, in this technical solution, the problem that during the puncture operation, the patient's breathing drives the chest to expand and contract, causing the patient's skin and chest ribs to move, resulting in the puncture operation being affected is overcome.

[0041] In one feasible manner, a buffer spring 15 is provided between the second threaded sleeve 16 and the mounting ring 12. The buffer spring 15 is sleeved on the vertical pole 2. The setting of the buffer spring 15 plays a certain buffering role to avoid excessive pressure and restriction on the patient's chest cavity, which may cause discomfort to the patient.

[0042] In one practicable manner, fixing elements are provided on both mounting plates 1 , and the fixing elements are used to fix the mounting plates 1 on both side surfaces of the operating bed.

[0043] In one feasible manner, a chest compression ring is sleeved with an annular airbag to avoid rigid contact with the patient. Preferably, the chest compression ring 14 is composed of two staggered semicircular rings, and the closed ends of the two semicircular rings are respectively fixed on two connecting rods 13 on the outside. The connecting rods 13 are telescopic rods. The staggered semicircular rings can adjust the coverage area of ​​the chest cavity by the two semicircular rings by changing the length of the telescopic rods, which can be adjusted according to the puncture needs. It is not difficult to understand that the pressurization range is close to the puncture site, which has a better effect on limiting the chest fluctuations.

[0044] like Figure 7As shown, in one practicable manner, a conical cylinder 30 is provided inside the guide ring 25, and a plurality of through grooves 31 are provided on the outer wall of the conical cylinder 30, and the through grooves 31 are provided through the small diameter section of the conical cylinder 30, and the outer wall of the conical cylinder 30 contacts the inner end surface of the guide ring 25, and an upper fixing ring 32 is provided on the large diameter end of the conical cylinder 30, and a lower fixing ring 33 is provided on the end of the guide ring 25, and a plurality of upper magnets 34 and lower magnets 35 are respectively circumferentially provided on the surfaces of the upper fixing ring 32 and the lower fixing ring 33 which are arranged opposite to each other.

[0045] After the needle 11 for treating lung nodules is inserted into the conical tube 30, the conical tube 30 is placed in the guide ring 25, and then the conical tube 30 is pulled downward under the attraction of the upper magnet 34 and the lower magnet 35, that is, the large diameter part of the conical tube 30 needs to enter the guide ring 25, so that the multiple parts separated by the through groove 31 need to be squeezed together toward the middle, that is, the needle 11 for treating lung nodules is centered and clamped, that is, this setting method is applicable to needles 11 for treating lung nodules of different diameters, and can automatically perform centering and clamping operations on the needle 11 for treating lung nodules to ensure its puncture stability. Of course, it is not difficult to understand that the magnetic attraction force is not large, and the deformation caused by it on the conical tube 30 will not damage the needle 11 for treating lung nodules.

[0046] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A pulmonary nodule puncture and ablation positioning device, characterized in that: The invention comprises a symmetrically arranged mounting plate (1), wherein each mounting plate (1) is provided with a vertical rod (2), one end of each vertical rod (2) is fixed to the mounting plate (1), a horizontal rod (3) is provided on the other end of each vertical rod (2), the two ends of each horizontal rod (3) are respectively fixed to the other ends of two vertical plates (9), a sliding sleeve (5) is sleeved on the horizontal rod (3), a plurality of convex ridges (4) are provided on the outer surface of the horizontal rod (3) along the length direction, a plurality of grooves matching the convex ridges (4) are provided on the inner side surface of the sliding sleeve (5), the grooves are slidably connected to the convex ridges (4), a first sliding rod (6) is symmetrically provided on the sliding sleeve (5), the first sliding rod (6) is arranged parallel to the mounting plate (1), one end of each first sliding rod (6) is fixed to the sliding sleeve (5), and the two first sliding rods (6) are symmetrically arranged on the sliding sleeve (5), the first sliding rod (6) is arranged parallel to the mounting plate (1), one end of each first sliding rod (6) is fixed to the sliding sleeve (5), and the two first sliding rods (6) are sleeved on the sliding sleeve (5). The rods (6) are each provided with a slip ring (7), the slip ring (7) being sleeved on the first sliding rod (6), a rotating cylinder (8) being provided between the two slip rings (7), the two ends of the rotating cylinder (8) being rotatably connected to the slip ring (7), and the rotating cylinder (8) being provided with a through hole for limiting the needle (11) for treating lung nodules, the sliding sleeve (5) is also provided with a vertical plate (9), the vertical plate (9) being arranged perpendicular to the mounting plate (1), the vertical plate (9) being provided with a slide plate (29), the slide plate (29) being slidably connected to the vertical plate (9), the slide plate (29) being located directly above the first sliding rod (6), and a laser locator (10) being provided on one end of the slide plate (29) facing the rotating cylinder (8), the laser locator (10) being universally connected to the end of the slide plate (29).

2. A pulmonary nodule puncture and ablation positioning device according to claim 1, characterized in that: A second sliding rod (17) is symmetrically arranged on the surface of the sliding sleeve (5), one end of the second sliding rod (17) is fixed on the sliding sleeve (5), the second sliding rod (17) and the first sliding rod (6) are arranged opposite to each other, a baffle (22) is arranged on the other end of the second sliding rod (17), a sliding block (18) is sleeved on the second sliding rod (17), at least one L-shaped rod (19) is arranged on the sliding block (18), the vertical portion of the L-shaped rod (19) is slidably connected to the sliding block (18), and a first threaded sleeve (20) is arranged on the vertical portion of the L-shaped rod (19) and is threadedly connected thereto, and the first threaded sleeve (20) is threadedly connected thereto, and the first threaded sleeve (20) is threadedly connected thereto. A threaded sleeve (20) is located on the upper surface of the slider (18); the transverse portion of the L-shaped rod (19) is arranged toward the direction of the rotating cylinder (8); a rotating shaft (24) is provided on the transverse portion of the L-shaped rod (19); one end of the rotating shaft (24) is rotatably connected to the L-shaped rod (19); a guide ring (25) fixedly connected to the rotating shaft (24) is provided on the rotating shaft (24); an adjusting mechanism for adjusting the inclination angle of the guide ring (25) is provided on the end of the rotating shaft (24) and the transverse portion of the L-shaped rod (19); and a locking mechanism for adjusting and locking the position of the slider (18) is provided on the baffle (22).

3. A pulmonary nodule puncture and ablation positioning device according to claim 2, characterized in that: The adjustment structure comprises a first gear (26) and a second gear (27) which are meshed with each other. The first gear (26) is fixed to one end of the rotating shaft (24) which is rotatably connected to the L-shaped rod (19). A locking bolt (28) is provided in the middle of the second gear (27). The second gear (27) is sleeved on the locking bolt (28), and the threaded end of the locking bolt (28) is threadedly connected to the L-shaped rod (19).

4. A pulmonary nodule puncture and ablation positioning device according to claim 2, characterized in that: The locking mechanism comprises a screw rod (21) and a nut (23), wherein the nut (23) is fixed on the baffle (22), the screw rod (21) is threadedly connected to the nut (23), and the threaded end of the screw rod (21) is rotatably connected to the slider (18).

5. The pulmonary nodule puncture and ablation positioning device according to claim 1, characterized in that: The two vertical poles (2) are both provided with external threads, and the vertical poles (2) are both sleeved with mounting rings (12), and the two mounting rings (12) are both provided with connecting rods (13), one end of the two connecting rods (13) is respectively fixed to the mounting rings (12), and the other ends of the two connecting rods (13) are provided with chest pressure rings (14), and the outer surface of the chest pressure ring (14) is fixed to the other ends of the two connecting rods (13), and the vertical pole (2) is provided with a second threaded sleeve (16) for pressing the mounting ring (12) downward.

6. A pulmonary nodule puncture and ablation positioning device according to claim 5, characterized in that: A buffer spring (15) is provided between the second threaded sleeve (16) and the mounting ring (12), and the buffer spring (15) is sleeved on the vertical pole (2).

7. A pulmonary nodule puncture and ablation positioning device according to claim 1, characterized in that: Both mounting plates (1) are provided with fixing elements, and the fixing elements are used to fix the mounting plates (1) to the two side surfaces of the operating table.

8. The pulmonary nodule puncture and ablation positioning device according to claim 5, characterized in that: The chest compression ring is sleeved with an annular air bag.

9. A pulmonary nodule puncture and ablation positioning device according to claim 5, characterized in that: The thoracic compression ring (14) is composed of two staggered semicircular rings, and the outer sides of the closed ends of the two semicircular rings are respectively fixed on two connecting rods (13), and the connecting rods (13) are telescopic rods.

10. A pulmonary nodule puncture and ablation positioning device according to claim 2, characterized in that: A conical cylinder (30) is provided inside the guide ring (25), a plurality of through grooves (31) are provided on the outer wall of the conical cylinder (30), the outer wall of the conical cylinder (30) contacts the inner end surface of the guide ring (25), an upper fixing ring (32) is provided on the large diameter end of the conical cylinder (30), a lower fixing ring (33) is provided on the end of the guide ring (25), and a plurality of upper magnets (34) and lower magnets (35) are respectively circumferentially provided on the surfaces of the upper fixing ring (32) and the lower fixing ring (33) which are arranged opposite to each other.

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