Minimally invasive puncture biopsy excision device for pulmonary nodules

Abstract

The invention belongs to the technical field of medical supplies, and particularly relates to a pulmonary nodule minimally invasive needle biopsy excision device which comprises a main body, the main body is connected with a hose and a hard tube, the hard tube is provided with a negative pressure opening, and the negative pressure opening is communicated with a negative pressure tube; the cutting part comprises a cutter A, a push rod is arranged on the cutter A, the push rod is connected with a driving block, and the driving block is connected with a guide wire A and a handle A; the annular cutting part comprises a rotating pipe, a sleeve is arranged in the hard pipe, the sleeve is connected with a gear shaft, the hard pipe is connected with a rotating ring, the gear shaft is connected with the rotating ring, and a cutter B is connected in the rotating ring; and the adjusting part comprises a sliding block, the rotating ring is connected with a gear ring, and the gear ring is connected with the cutter B. According to the thoracic nodule cutting device, a nodule in the thoracic cavity can be annularly cut, so that the internal condition of the nodule can be conveniently observed, the cutting depth of the cutter can be adjusted according to the excision requirement, then epidermis excision or complete excision can be selected at will, the nodule with the large size can be cut, and the cut nodule can be conveniently discharged.

Description

Technical Field

[0001] This invention belongs to the field of medical supplies technology, specifically relating to a minimally invasive puncture biopsy and resection device for pulmonary nodules. Background Technology

[0002] With the widespread adoption of low-dose spiral pulmonary screening, the detection rate of pulmonary nodules has significantly improved. For pulmonary nodules with malignant features or those that enlarge during follow-up, obtaining a definitive pathological diagnosis is crucial. Traditional treatment methods involve sampling and resection of the nodules via biopsy, but these methods still present some challenges.

[0003] First, most devices are designed for "maximum gross resection," meaning that after the basket opens, it rotates and cuts at a fixed size, aiming to remove the nodule and surrounding lung tissue entirely. However, for benign nodules, excessive gross resection sacrifices potentially sacrificing healthy lung tissue, potentially leading to unnecessary lung function loss, pneumothorax, or an increased risk of bleeding. Conversely, if the device is designed for only "minor circumferential sampling," even if the final pathological diagnosis is a malignant nodule, incomplete resection may force the patient to undergo a second thoracoscopic surgery in a short period, increasing their physical and psychological burden.

[0004] Secondly, the core advantage of minimally invasive surgery lies in its small trauma and rapid recovery. In order to obtain diagnostic or treatment specimens, the diameter of the nodule tissue block removed is usually large. In order to minimize chest wall trauma and reduce the incidence of pneumothorax, the puncture site is usually narrow. This can lead to the nodule being unable to be removed smoothly, resulting in the need to enlarge the puncture site, which goes against the original intention of minimally invasive surgery. Summary of the Invention

[0005] The purpose of this invention is to provide a minimally invasive puncture biopsy resection device for lung nodules, which can perform circumferential cutting of nodules in the thoracic cavity to observe the internal condition of the nodules. It can also adjust the cutting depth of the blade according to the needs of the resection, thereby arbitrarily choosing to remove the epidermis or completely remove the nodules, and can remove larger nodules, making it convenient to drain the removed nodules.

[0006] The specific technical solution adopted by this invention is as follows: A device for minimally invasive puncture biopsy and resection of pulmonary nodules includes: The main body has a flexible tube fixedly connected to its front end, a rigid tube fixedly connected to its far end, a negative pressure port opened at the far end of the rigid tube, and a negative pressure pipe connected to the negative pressure port. The negative pressure pipe is located inside the main body. The cutting part includes a cutter A, which is rotatably connected to the negative pressure port. A push rod is provided at the upper middle part of the cutter A. A drive block is slidably connected to the outer ring of the push rod. Guide wires A are fixedly connected to both ends of the drive block. The other end of the guide wires A passes through the main body and the hose and is fixedly connected to a handle A. The ring-cutting section includes a rotating tube, which is disposed on the outer ring of the rigid tube. A sleeve is disposed in the inner cavity of the rigid tube. The sleeve is connected to the rotating tube and a gear shaft is connected to the sleeve. A rotating ring is rotatably connected to the inner cavity of the rigid tube. The gear shaft is connected to the rotating ring. A cutter B is rotatably connected inside the rotating ring. The adjustment part includes a slider connected to a gear shaft. A gear ring is rotatably connected to the inner cavity of the rotating ring. The gear ring is connected to the cutter B and is located on the right side of the gear shaft. The ring cutting section is divided into two states according to the movement of the slider. In the first state, the slider remains in its original position. At this time, the gear shaft is connected to the rotating ring, driving the rotating ring and the cutter B to rotate. In the second state, the slider moves to the right, driving the gear shaft to connect with the gear ring. At this time, the gear shaft drives the gear ring to rotate, controlling the cutter B to rotate outward or inward.

[0007] In a preferred embodiment, a flexible tube is fixedly connected to the middle of the main body, while a display is fixedly mounted on the side of the main body. A rigid tube is fixedly connected to the end of the flexible tube away from the main body, and a camera is fixedly connected to the end of the rigid tube away from the main body.

[0008] In a preferred embodiment, a negative pressure port is provided on the rigid tube below the camera. Multiple sets of barbs are fixedly connected to the inner wall of the negative pressure port. A negative pressure tube is connected to the outlet of the negative pressure port. The other end of the negative pressure tube passes through the rigid tube and the flexible tube and extends out from the side of the main body.

[0009] In a preferred embodiment, three sets of cutters A are provided, evenly distributed inside the negative pressure port, and all three sets of cutters A are rotatably connected to the inner wall of the negative pressure port. An arc-shaped piece is fixedly connected to the middle section of cutter A near the inner wall of the negative pressure port, and push rods are fixedly connected to both sides of the upper end of the arc-shaped piece. The push rods are slidably connected to the inner cavity of the rigid tube, and a drive block is slidably connected to the inner cavity of the rigid tube. The two sides of the drive block are sleeved on the outer ring of the two sets of push rods, and guide wires A are fixedly connected to both sides of the upper end of the drive block.

[0010] In a preferred embodiment, the other ends of both sets of guide wires A pass through a rigid tube and a flexible tube, and extend from the side of the main body away from the flexible tube. A limiting tube is fixedly connected to the end of the main body away from the flexible tube. A handle A is slidably connected to the inner cavity of the limiting tube. The ends of the two sets of guide wires A that extend out of the flexible tube are fixedly connected to both sides of the handle A. A scale groove is opened at the upper end of the limiting tube. A magnetic block is fixedly connected to the side of the handle A that contacts the limiting tube.

[0011] In a preferred embodiment, the circumferential cutting section further includes a hollow shaft motor, which is fixedly mounted on the outer ring of the rigid tube near the flexible tube. A rotating tube is fixedly connected to the rotating part of the inner ring of the hollow shaft motor. The rotating tube is rotatably connected to the outer ring of the rigid tube, and the inner ring of the rotating tube has a toothed groove A. A sleeve is rotatably connected to the lower end of the rigid tube. The end of the sleeve near the main body extends out of the rigid tube and into the inner ring of the rotating tube. A gear A is fixedly connected to the end of the sleeve extending out of the rigid tube. The outer ring of the gear A meshes in the toothed groove A.

[0012] In a preferred embodiment, a gear shaft is slidably connected to the lower end of the inner cavity of the rigid tube. The end of the gear shaft near the main body extends into and is slidably connected to the inner cavity of the sleeve. A rotating ring is rotatably connected to the inlet of the negative pressure port of the rigid tube. The outer ring of the rotating ring has a toothed groove B. The outer ring of the gear shaft away from the main body meshes in the toothed groove B. The inner ring of the rotating ring has a groove, and a cutter B is rotatably connected in the groove.

[0013] In a preferred embodiment, the slider is slidably connected to the lower end of the inner cavity of the rigid tube, and the outer ring of the middle section of the gear shaft is rotatably connected to the middle of the inner cavity of the slider. Guide wires B are fixedly connected to both the left and right sides of the upper end of the slider. The other end of each guide wire B passes through the rigid tube and the flexible tube, and extends from the end of the main body away from the flexible tube. A receiving tube is fixedly connected to the lower part of the end of the main body away from the flexible tube. A handle B is slidably connected to the inner cavity of the receiving tube. The ends of the two sets of guide wires B that extend out of the main body are respectively fixedly connected to the middle of the two sides of the handle B.

[0014] In a preferred embodiment, a gear ring is rotatably connected to the middle of the outer ring of the rotating ring, and a gear B is fixedly connected to the rotating shaft of the cutter B. The outer ring of the gear B meshes with the inner ring of the gear ring, while the outer ring of the gear ring is in contact with the tooth groove B.

[0015] In a preferred embodiment, a limiting block is slidably connected to the lower end of the inner cavity of the rotating ring. The end of the limiting block near the gear ring passes through the rotating ring and extends into the groove of the outer ring of the gear ring. A compression spring is fixedly connected to one end of the limiting block located in the inner cavity of the rotating ring, and a positioning rod is fixedly connected to the upper end of the limiting block on the side connected to the compression spring. The positioning rod is slidably connected to the lower end of the inner cavity of the rotating ring.

[0016] The technical effects achieved by this invention are as follows: The circumferential cutting part of this invention can perform circumferential cutting of nodules in the thoracic cavity to observe the internal condition of the nodules and facilitate diagnosis. In use, the rotating tube is driven by the circumferential cutting part to perform circumferential motion, which in turn drives the sheath to rotate. The sheath, in turn, drives the gear shaft and the rotating ring to rotate, which drives the cutter B inside the rotating ring to perform circumferential motion, cutting the nodules in the negative pressure port in a circumferential manner. Thus, after the epidermis of the nodule is cut open, the internal condition of the nodule can be easily observed, which facilitates the doctor's diagnosis. The adjustment unit and circumferential cutting unit of the present invention can adjust the cutting depth of the cutter according to the cutting requirements, thereby arbitrarily choosing to remove the epidermis or completely remove it; when it is necessary to adjust the cutting depth of the cutter B during use, after the slider is driven by the adjustment unit, it will drive the gear shaft to move, so that it disengages from the rotating ring and engages with the gear ring. At this time, when the rotating tube rotates again, it will only drive the gear ring to rotate, and the gear ring will drive the cutter B to rotate to adjust the extension angle and depth. After the adjustment is completed, the slider and gear shaft are driven to reset, and the rotating ring can be controlled to rotate again to perform circumferential cutting operation. The cutting part of this invention can remove large nodules, making it easier to discharge the cut nodules. When using the invention, if the diameter of the nodule is too large to be discharged through the negative pressure tube, push the handle A to move the guide wire A, which drives the drive block to slide in the inner cavity of the rigid tube, causing the cutter A to rotate inward and contact the nodule. At this time, the nodule will be cut before entering the negative pressure tube, thereby reducing the volume of the nodule and making it easier to discharge from the negative pressure tube. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the position of the rigid tube in this invention; Figure 3 This is a cross-sectional schematic diagram of the hose in this invention; Figure 4 This is a schematic diagram showing the disassembled transfer tube in this invention; Figure 5 This is a schematic diagram of the rigid tube structure in this invention; Figure 6 This is a cross-sectional schematic diagram of the rigid tube in this invention; Figure 7 This is a schematic diagram showing the position of the push rod in this invention; Figure 8 This is a schematic diagram showing the position of the driving block in this invention; Figure 9 This is a schematic diagram showing the positions of guide wire A and limiting tube in this invention; Figure 10 This is a cross-sectional schematic diagram of the limiting tube in this invention; Figure 11 This is a schematic diagram showing the position of the circumferential cut portion in this invention; Figure 12 This is a cross-sectional schematic diagram of the sleeve in this invention; Figure 13 This is a schematic diagram showing the position of handle B in this invention; Figure 14 This is a schematic diagram showing the position of the rotating ring in this invention; Figure 15 This is a cross-sectional schematic diagram of the transfer ring in this invention; Figure 16 This is a schematic diagram showing the position of the limiting block in this invention; Figure 17 This is a schematic diagram of the limiting block in this invention.

[0018] The attached diagram lists the components represented by each number as follows: 10. Main body; 11. Hose; 12. Display; 13. Rigid tube; 14. Camera; 15. Negative pressure port; 16. Barb; 17. Negative pressure tube; 20. Cutting part; 21. Cutter A; 22. Arc-shaped piece; 23. Push rod; 24. Drive block; 25. Guide wire A; 26. Limiting tube; 27. Handle A; 28. Scale groove; 29. ​​Magnetic block; 30. Ring cutting part; 31. Hollow shaft motor; 32. Rotary tube; 33. Gear groove A; 34. Sleeve; 35. Gear A; 36. Gear shaft; 37. Rotary ring; 38. Gear groove B; 39. Cutter B; 40. Adjustment part; 41. Slider; 42. Guide wire B; 43. Storage tube; 44. Handle B; 45. Gear ring; 46. Gear B; 47. Limiting block; 48. Compression spring; 49. Positioning rod. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0023] Please see the appendix Figures 1 to 6 , Figures 10 to 16 As shown, this embodiment provides a minimally invasive puncture biopsy resection device for lung nodules, comprising: The main body 10 has a flexible hose 11 fixedly connected to its front end, a rigid tube 13 fixedly connected to its far end, a negative pressure port 15 opened at the far end of the rigid tube 13, and a negative pressure pipe 17 connected to the negative pressure port 15. The negative pressure pipe 17 is located inside the main body 10. The cutting part 20 includes a cutter A21, which is rotatably connected to the negative pressure port 15. A push rod 23 is provided at the upper middle part of the cutter A21. A drive block 24 is slidably connected to the outer ring of the push rod 23. Guide wires A25 are fixedly connected to both ends of the drive block 24. The other end of the guide wires A25 passes through the main body 10 and the hose 11 and is fixedly connected to a handle A27. The ring cutting section 30 includes a rotating tube 32, which is disposed on the outer ring of the rigid tube 13. A sleeve 34 is disposed in the inner cavity of the rigid tube 13. The sleeve 34 is connected to the rotating tube 32 and a gear shaft 36 is connected to the sleeve 34. A rotating ring 37 is rotatably connected to the inner cavity of the rigid tube 13. The gear shaft 36 is connected to the rotating ring 37. A cutter B39 is rotatably connected inside the rotating ring 37. The adjustment part 40 includes a slider 41, which is connected to the gear shaft 36. A gear ring 45 is rotatably connected to the inner cavity of the rotating ring 37. The gear ring 45 is connected to the cutter B39 and is located on the right side of the gear shaft 36. The ring cutting section 30 is divided into two states according to the movement of the slider 41. In the first state, the slider 41 remains in its original state. At this time, the gear shaft 36 is connected to the rotating ring 37, driving the rotating ring 37 and the cutter B39 to rotate. In the second state, slider 41 moves to the right, driving gear shaft 36 to connect with gear ring 45. At this time, gear shaft 36 drives gear ring 45 to rotate, controlling cutter B39 to rotate outward or inward.

[0024] It should be noted that, in order to ensure the stable operation of the device, the main body 10 should have a built-in battery and be connected to the mains power so that the various components inside the device can operate stably.

[0025] In this embodiment, during use, the rigid tube 13 and the flexible tube 11 are inserted into the patient's body, causing the negative pressure port 15 to adhere to the nodule. Then, the negative pressure tube 17, through an external device, creates negative pressure within the negative pressure port 15 to adsorb the nodule. Simultaneously, the slider 41 moves to the right, causing the gear shaft 36 to mesh with the gear ring 45. The rotating tube 32 then rotates, driving the sleeve 34 and gear shaft 36 to rotate. The gear shaft 36 then drives the gear ring 45 and the cutter B39 to rotate. The angle of the cutter B39's extension is adjusted. After adjustment, the gear shaft 36 returns to its original position. The gear shaft 36 then drives the rotating ring 37 to rotate, causing the cutter B39 to make a circular motion around the negative pressure port 15, cutting open the surface of the nodule. A slight drag then exposes the interior of the nodule. If complete removal of the interior is required, the nodule is first completely sucked into the negative pressure port 15. Then, the angle of the cutter B39 is adjusted again, rotating it outward to its maximum angle. The rotating ring 37 is then driven to rotate again to completely remove the nodule. If only the epidermis needs to be removed, the cut epidermis can be sucked into the negative pressure port 15 and then removed. If the nodule is too large to be discharged through the negative pressure tube 17, push the handle A27 to move the guide wire A25, causing the drive block 24 to slide in the inner cavity of the rigid tube 13, driving the cutter A21 to rotate inward and contact the nodule. At this time, the nodule will be cut before entering the negative pressure tube 17, thereby reducing the volume of the nodule and making it easier to be discharged from the negative pressure tube 17.

[0026] Secondly, please refer to again Figures 1 to 5 A flexible tube 11 is fixedly connected to the middle of the main body 10, while a display 12 is fixedly installed on the side of the main body 10. A rigid tube 13 is fixedly connected to the end of the flexible tube 11 away from the main body 10, and a camera 14 is fixedly connected to the end of the rigid tube 13 away from the main body 10. The rigid tube 13 has a negative pressure port 15 below the camera 14. Multiple sets of barbs 16 are fixedly connected to the inner wall of the negative pressure port 15. The outlet of the negative pressure port 15 is connected to a negative pressure tube 17. The other end of the negative pressure tube 17 passes through the rigid tube 13 and the flexible tube 11 and extends out from the side of the main body 10.

[0027] It should be noted that the main body 10 has built-in Bluetooth, WIFI or 5G components to transmit the images captured by the camera 14 (or the main body 10 has built-in optical fiber) so that the captured images can be displayed on the display 12. The main body 10 has a built-in drive knob, and the hose 11 should also have a built-in control wire to control the bending and direction of the hose 11 (this is a common technical structure in the prior art, such as a endoscopic endoscope, which will not be described in detail here). The barbs 16 are directed towards the depth of the negative pressure port 15, which is intended to allow the epidermis to be suspended after it is removed. When the rigid tube 13 is pulled out, the internal condition of the nodule after the epidermis is cut can be easily seen, so as to determine whether complete removal is necessary. The negative pressure port 15 is a conical structure, and multiple sets of barbs 16 are provided on the inner wall to catch the adsorbed nodules. Preferably, when using the device, the negative pressure tube 17 should be connected to an external negative pressure device to adsorb the nodules and discharge the excised nodules.

[0028] In this embodiment, during use, the camera 14 captures real-time images of the patient's internal condition and transmits the images to the display 12, allowing medical staff to observe the position of the front end of the rigid tube 13, the relative position of the negative pressure port 15 to the lung nodule, and the surrounding tissue environment in real time. This allows for precise guidance of the negative pressure port 15 at the front end of the rigid tube 13 to the target lung nodule, ensuring that the barbs 16 can effectively contact and hook onto the nodule, providing clear visual guidance and accurate positioning for subsequent adsorption, cutting, and other operations.

[0029] Secondly, please refer to again Figures 5 to 10 There are three sets of cutters A21, which are evenly distributed inside the negative pressure port 15. All three sets of cutters A21 are rotatably connected to the inner wall of the negative pressure port 15 through sealed bearings. An arc-shaped piece 22 is fixedly connected to the middle section of the cutter A21 near the inner wall of the negative pressure port 15. Push rods 23 are fixedly connected to both sides of the upper end of the arc-shaped piece 22. The push rods 23 are slidably connected to the inner cavity of the rigid tube 13. A drive block 24 is slidably connected to the inner cavity of the rigid tube 13. The two sides of the drive block 24 are sleeved on the outer ring of the two sets of push rods 23. Guide wires A25 are fixedly connected to both sides of the upper end of the drive block 24. The other ends of the two sets of guide wires A25 pass through the rigid tube 13 and the flexible tube 11, and extend from the side of the main body 10 away from the flexible tube 11. The end of the main body 10 away from the flexible tube 11 is fixedly connected to the limiting tube 26. The inner cavity of the limiting tube 26 is slidably connected to the handle A27. The two sets of guide wires A25 extend from the end of the flexible tube 11 and are fixedly connected to both sides of the handle A27. The upper end of the limiting tube 26 is provided with a scale groove 28. The side of the handle A27 that contacts the limiting tube 26 is fixedly connected to a magnetic block 29.

[0030] It should be noted that the center of the arc of the arc-shaped piece 22 is at the same position as the rotation center of the cutter A21, so as to avoid the arc-shaped piece 22 affecting the rotation of the cutter A21; Both sides of the drive block 24 are provided with elongated through slots, and the push rod 23 is slidably connected in the through slots. Thus, by controlling the movement of the drive block 24, the push rod 23 and the arc-shaped piece 22 can be moved, thereby driving the cutter A21 to rotate. The two sets of guide wires A25 are divided into upper and lower sets. The lower guide wire A25 connects the side of the drive block 24 and the handle A27 that are close to each other, while the upper guide wire A25 connects the side that are far from each other, so that the drive block 24 and the handle A27 form a ring structure through the two sets of guide wires A25. Thus, the displacement of the drive block 24 can be controlled by adjusting the position of the handle A27. The surface of the limiting tube 26 is provided with a magnetic structure that is compatible with the magnetic block 29. The number of magnetic structures is the same as that of the scale groove 28, and the spacing between adjacent magnetic structures is also the same as that of the scale groove 28. Thus, the position of the handle A27 and the drive block 24 can be easily determined by the positioning of the magnetic structure, which makes it convenient to control the rotation angle of the cutter A21. Here, during the cutting operation, after the nodule is removed, if the nodule diameter is small, it is directly sucked out through the negative pressure tube 17. If the nodule diameter is large and cannot be sucked out, the cutter A21 is controlled to rotate outward so that the nodule contacts the cutter A21 and is cut open, and then discharged from the negative pressure tube 17.

[0031] In this embodiment, when the nodule is too large to be discharged from the negative pressure tube 17, pulling the handle A27 moves the guide wire A25, causing the drive block 24 to slide upward in the inner cavity of the rigid tube 13. The elongated through slots on both sides of the drive block 24 push the push rod 23 and the arc-shaped piece 22 to rotate downward, thereby causing the cutter A21 to rotate inward around its rotation axis. As the handle A27 slides in the limiting tube 26, the magnetic block 29 is attracted to the magnetic structure on the surface of the limiting tube 26. The rotation angle of the cutter A21 can be read directly through the scale groove 28, ensuring that the three sets of cutters A21 synchronously retract inward to the preset angle. At this time, the blade of the cutter A21 contacts the nodule sucked into the negative pressure port 15. Under the continuous suction of the negative pressure, the nodule is stably clamped between the cutters A21. Continuing to pull the handle A27 will cause the cutter A21 to rotate further inward, cutting the nodule so that it can be smoothly discharged through the negative pressure tube 17. After cutting is completed, pull handle A27 in the opposite direction. Guide wire A25 drives drive block 24 to reset upward. Push rod 23 and arc-shaped plate 22 move upward accordingly, so that cutter A21 is reset, avoiding interference with subsequent operations.

[0032] Secondly, please refer to again Figure 4 , Figures 11 to 12 , Figures 14 to 15 The annular section 30 also includes a hollow shaft motor 31. The hollow shaft motor 31 is fixedly installed on the outer ring of the rigid tube 13 near the flexible tube 11. A rotating tube 32 is fixedly connected to the rotating part of the inner ring of the hollow shaft motor 31. The rotating tube 32 is rotatably connected to the outer ring of the rigid tube 13 through a sealed bearing. The inner ring of the rotating tube 32 is provided with a toothed groove A33. The lower end of the rigid tube 13 is rotatably connected to a sleeve 34 through a sealed bearing. The end of the sleeve 34 near the main body 10 extends out of the rigid tube 13 and into the inner ring of the rotating tube 32. The end of the sleeve 34 extending out of the rigid tube 13 is fixedly connected to a gear A35. The outer ring of the gear A35 meshes in the toothed groove A33. A gear shaft 36 is slidably connected to the lower end of the inner cavity of the rigid tube 13. The end of the gear shaft 36 near the main body 10 extends into and is slidably connected to the inner cavity of the sleeve 34. A rotating ring 37 is rotatably connected to the inlet of the negative pressure port 15 of the rigid tube 13. The outer ring of the rotating ring 37 has a toothed groove B38. The outer ring of the gear shaft 36 away from the main body 10 is engaged in the toothed groove B38. The inner ring of the rotating ring 37 has a groove. A cutter B39 is rotatably connected in the groove through a sealed bearing.

[0033] It should be noted that the inner ring of the rotating tube 32 near the sleeve 34 is provided with an annular groove to accommodate the tooth groove A33 and the gear A35, so as to avoid affecting the rotation of the gear A35. The gear shaft 36 is composed of a cylindrical rod and a gear, and the outer ring of the gear meshes with the tooth groove B38; A hexagonal rod is provided at one end of the gear shaft 36 that extends into the inner cavity of the sleeve 34, and a matching hexagonal groove is also provided in the inner cavity of the sleeve 34, so that the gear shaft 36 can slide in the inner cavity of the sleeve 34 and can also be driven to rotate by the sleeve 34. The cutter B39 is an arc-shaped blade that can be stored inside the cavity of the swivel 37 under normal conditions, so that the cutter B39 is only driven to extend when a cutting operation is performed.

[0034] In this embodiment, the hollow shaft motor 31 drives the rotating tube 32 to rotate. The rotating tube 32 drives the sleeve 34 and the gear shaft 36 to rotate synchronously through the tooth groove A33 and the gear A35. At this time, the gear shaft 36 drives the rotating ring 37 to rotate around the rigid tube 13 through the tooth groove B38, which in turn drives the cutter B39 connected to the inner ring groove of the rotating ring 37 to rotate synchronously, realizing the annular cutting action of the cutter B39 around the negative pressure port 15.

[0035] Please refer to it again. Figures 11 to 17 The slider 41 is slidably connected to the lower end of the inner cavity of the rigid tube 13, and the outer ring of the middle section of the gear shaft 36 is rotatably connected to the middle of the inner cavity of the slider 41 through a sealed bearing. Guide wires B42 are fixedly connected to the left and right sides of the upper end of the slider 41. The other end of the guide wires B42 passes through the rigid tube 13 and the flexible tube 11, and extends out from the end of the main body 10 away from the flexible tube 11. A storage tube 43 is fixedly connected to the lower part of the end of the main body 10 away from the flexible tube 11. A handle B44 is slidably connected to the inner cavity of the storage tube 43. The ends of the two sets of guide wires B42 that extend out of the main body 10 are fixedly connected to the middle of the two sides of the handle B44 respectively. A gear ring 45 is rotatably connected to the middle of the outer ring of the swivel ring 37 via a sealed bearing. A gear B46 is fixedly connected to the shaft of the cutter B39. The outer ring of the gear B46 meshes with the inner ring of the gear ring 45, while the outer ring of the gear ring 45 is in contact with the tooth groove B38. A limiting block 47 is slidably connected to the lower end of the inner cavity of the rotating ring 37. The end of the limiting block 47 near the gear ring 45 passes through the rotating ring 37 and extends into the groove of the outer ring of the gear ring 45. A compression spring 48 is fixedly connected to one end of the limiting block 47 located in the inner cavity of the rotating ring 37, and a positioning rod 49 is fixedly connected to the upper end of the limiting block 47 on the side connected to the compression spring 48. The positioning rod 49 is slidably connected to the lower end of the inner cavity of the rotating ring 37.

[0036] It should be noted that the slider 41 has a quadrilateral structure to prevent the slider 41 from rotating along with the gear shaft 36 when it rotates, thus ensuring stability. The part where the gear shaft 36 connects to the slider 41 is provided with a convex ring with a diameter larger than that of the gear shaft 36, which is intended to enable the slider 41 to both drive the gear shaft 36 to move and allow the gear shaft 36 to rotate within the slider 41. The structure of the receiving tube 43 should be similar to that of the limiting tube 26 to facilitate the control of the slider 41's displacement. The connection between handle B44 and guide wire B42 is the same as the connection between handle A27 and guide wire A25, which is designed to facilitate the movement of slider 41. The gear ring 45 has a structure with toothed grooves on both the inner and outer sides. The groove of the inner ring meshes with the gear B46, while the groove of the outer ring is exactly the same as the tooth groove B38 and fits together. This is intended to allow the gear shaft 36 to slide into the outer ring of the gear ring 45 through the tooth groove B38 and mesh with it. Three sets of protrusions are provided on the lower left side of the limiting block 47, and all three sets of protrusions are movably inserted into the outer ring groove of the toothed ring 45. This is intended to ensure that when the rotating ring 37 rotates under normal conditions, it will drive the limiting block 47 to rotate synchronously, so as to avoid affecting the stability of the cutter B39 adjustment. When gear shaft 36 meshes with gear ring 45, gear shaft 36 will push limit block 47 to the right, causing positioning rod 49 to extend out of rotating ring 37 and insert into rigid tube 13 (rigid tube 13 has corresponding grooves at designated positions, such as...). Figure 17 As shown), the purpose is to keep the rotating ring 37 in a fixed position when the gear shaft 36 drives the gear ring 45 to rotate, so as to avoid affecting the accuracy of the cutter B39 adjustment and the normal use of the device. In the normal state, the limiting block 47 is inserted into the gear ring 45. When the gear shaft 36 drives the rotating ring 37 to rotate, it will synchronously drive the gear ring 45 to rotate, keeping the cutter B39 at a stable angle without deviation or rotation. When it is necessary to adjust the angle of the cutter B39 to rotate outward, the gear shaft 36 will pass over the tooth groove B38 and mesh with the outer ring of the gear ring 45 under the drive of the slider 41. At this time, the gear shaft 36 will push the limiting block 47 to retract into the rotating ring 37 to release the limiting of the gear ring 45. At the same time, the positioning rod 49 will also be inserted into the rigid tube 13 to limit and fix the rotating ring 37. Then the gear ring 45 can be driven to rotate to adjust the angle of the cutter B39. After completion, the gear shaft 36 can be reset. When adjusting the angle of the cutter B39, at the end, the outer groove of the gear ring 45 should also be fully engaged with the gear groove B38 to avoid affecting the sliding of the gear shaft 36. When adjusting the position of slider 41, the handle B44 must be braked to prevent the limit block 47 from being pushed back by the spring 48, which would affect the operation of gear shaft 36.

[0037] In this embodiment, when it is necessary to adjust the extension angle of the cutter B39 during use, the handle B44 is first driven to slide inside the receiving tube 43. The guide wire B42 drives the slider 41 to move towards the negative pressure port 15 in the inner cavity of the rigid tube 13. This drives the gear shaft 36 to move synchronously, causing the gear shaft 36 to disengage from the tooth groove B38 and embed into the outer ring groove of the gear ring 45. During this process, the gear of the gear shaft 36 pushes the limiting block 47 to retract into the rotating ring 37, releasing the rotational limitation on the gear ring 45. At the same time, the positioning rod 49 at the upper end of the limiting block 47 extends out of the outer wall of the rotating ring 37 under the action of the limiting block 47 and inserts into the preset groove in the inner cavity of the rigid tube 13, thereby fixing the rotating ring 37 in the current position. At this time, the hollow shaft motor 31 drives the rotating tube 32 to rotate. The rotating tube 32 drives the gear shaft 36 to rotate synchronously through the gear A35 and the sleeve 34, which in turn drives the gear ring 45 to rotate. The gear ring 45 then drives the gear B46 to rotate the cutter B39 around its own rotation axis, thereby adjusting the angle at which the cutter B39 extends out of the inner groove of the rotating ring 37. After adjustment, the handle B44 is driven in the opposite direction to reset it. The guide wire B42 pulls the slider 41 and the gear shaft 36 to reset synchronously and re-engage with the tooth groove B38. At the same time, the limiting block 47 pops out to the left under the elastic action of the pressure spring 48. The protrusion at the lower left end of the block re-inserts into the outer groove of the gear ring 45, restoring the limiting of the gear ring 45. The positioning rod 49 is also pulled out from the groove of the rigid tube 13, releasing the fixation of the rotating ring 37. At this time, the cutter B39 can perform circular cutting operation with the rotating ring 37.

[0038] The working principle of this invention is as follows: During use, the camera 14 captures real-time images of the patient's internal condition and transmits the images to the display 12. Then, the negative pressure port 15 is guided to the target lung nodule, and an external negative pressure device creates negative pressure within the port 15 to adsorb the nodule. Subsequently, the drive handle B44 moves, causing the guide wire B42 to displace the slider 41 and gear shaft 36, disengaging the gear shaft 36 from the tooth groove B38 and embedding it into the outer groove of the gear ring 45. During this process, the gear of the gear shaft 36 pushes the limiting block 47 back into the rotating ring 37, releasing the rotational limitation on the gear ring 45. Simultaneously, the positioning rod 49 at the upper end of the limiting block 47 extends out of the outer wall of the rotating ring 37 under the action of the limiting block 47 and inserts into the rigid tube 13, fixing the rotating ring 37 in its current position. At this time, the hollow shaft motor 31 drives the rotating tube 32 to rotate. The rotating tube 32 drives the gear shaft 36 to rotate synchronously through the gear A35 and the sleeve 34, which in turn drives the gear ring 45 to rotate. The gear ring 45 then drives the gear B46 to rotate the cutter B39 around its own rotation axis, thereby adjusting the angle at which the cutter B39 extends from the inner groove of the rotating ring 37. After adjustment, the reverse drive handle B44 is used to reset it, causing the slider 41 and the gear shaft 36 to reset synchronously and re-engage with the tooth groove B38. At the same time, the limit block 47 and the positioning rod 49 also reset. The rotating tube 32 rotates again, driving the gear shaft 36 to rotate synchronously. At this time, the gear shaft 36 drives the rotating ring 37 and the cutter B39 to rotate through the tooth groove B38, performing a ring-shaped cutting action on the nodules in the negative pressure port 15. After cutting open the outer skin of the nodule, if deeper removal is required, the extension angle of the cutter B39 is adjusted again for complete removal. If the nodule being removed is too large to fit smoothly into the negative pressure tube 17, pulling handle A27 moves guide wire A25, causing drive block 24 to slide and push push rod 23 and arc-shaped plate 22 to rotate downwards. This, in turn, causes cutter A21 to rotate inwards around its axis of rotation, causing all three sets of cutters A21 to converge inwards simultaneously and cut the nodule, allowing it to be smoothly discharged through negative pressure tube 17. After cutting, pulling handle A27 in the opposite direction causes guide wire A25 to move drive block 24 upwards to reset, and push rod 23 and arc-shaped plate 22 move upwards accordingly, resetting cutter A21 and preventing interference with subsequent operations.

[0039] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A device for minimally invasive puncture biopsy and resection of pulmonary nodules, characterized in that: include: The main body has a flexible tube fixedly connected to its front end, a rigid tube fixedly connected to its far end, a negative pressure port opened at the far end of the rigid tube, and a negative pressure pipe connected to the negative pressure port. The negative pressure pipe is located inside the main body. The cutting part includes a cutter A, which is rotatably connected to the negative pressure port. A push rod is provided at the upper middle part of the cutter A. A drive block is slidably connected to the outer ring of the push rod. Guide wires A are fixedly connected to both ends of the drive block. The other end of the guide wires A passes through the main body and the hose and is fixedly connected to a handle A. The ring-cutting section includes a rotating tube, which is disposed on the outer ring of the rigid tube. A sleeve is disposed in the inner cavity of the rigid tube. The sleeve is connected to the rotating tube and a gear shaft is connected to the sleeve. A rotating ring is rotatably connected to the inner cavity of the rigid tube. The gear shaft is connected to the rotating ring. A cutter B is rotatably connected inside the rotating ring. The adjustment part includes a slider connected to a gear shaft. A gear ring is rotatably connected to the inner cavity of the rotating ring. The gear ring is connected to the cutter B and is located on the right side of the gear shaft. The ring cutting section is divided into two states according to the movement of the slider. In the first state, the slider remains in its original position. At this time, the gear shaft is connected to the rotating ring, driving the rotating ring and the cutter B to rotate. In the second state, the slider moves to the right, driving the gear shaft to connect with the gear ring. At this time, the gear shaft drives the gear ring to rotate, controlling the cutter B to rotate outward or inward.

2. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 1, characterized in that: A flexible tube is fixedly connected to the middle of the main body, while a monitor is fixedly installed on the side of the main body. A rigid tube is fixedly connected to the end of the flexible tube away from the main body, and a camera is fixedly connected to the end of the rigid tube away from the main body.

3. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 2, characterized in that: The rigid tube has a negative pressure port located below the camera. Multiple sets of barbs are fixedly connected to the inner wall of the negative pressure port. A negative pressure tube is connected to the outlet of the negative pressure port. The other end of the negative pressure tube passes through the rigid tube and the flexible tube and extends out from the side of the main body.

4. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 3, characterized in that: There are three sets of cutters A, evenly distributed inside the negative pressure port. All three sets of cutters A are rotatably connected to the inner wall of the negative pressure port. An arc-shaped piece is fixedly connected to the middle section of cutter A near the inner wall of the negative pressure port. Push rods are fixedly connected to both sides of the upper end of the arc-shaped piece. The push rods are slidably connected to the inner cavity of the rigid tube. A drive block is slidably connected to the inner cavity of the rigid tube. The two sides of the drive block are sleeved on the outer ring of the two sets of push rods. Guide wires A are fixedly connected to both sides of the upper end of the drive block.

5. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 4, characterized in that: The other ends of both sets of guide wires A pass through the rigid tube and the flexible tube, and extend from the side of the main body away from the flexible tube. The end of the main body away from the flexible tube is fixedly connected to a limiting tube. The inner cavity of the limiting tube is slidably connected to a handle A. The ends of the two sets of guide wires A that extend out of the flexible tube are fixedly connected to both sides of the handle A. The upper end of the limiting tube is provided with a scale groove. The side of the handle A that contacts the limiting tube is fixedly connected to a magnetic block.

6. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 1, characterized in that: The circumferential cutting section also includes a hollow shaft motor, which is fixedly mounted on the outer ring of the rigid tube near the flexible tube. A rotating tube is fixedly connected to the rotating part of the inner ring of the hollow shaft motor. The rotating tube is rotatably connected to the outer ring of the rigid tube, and the inner ring of the rotating tube has a toothed groove A. A sleeve is rotatably connected to the inner cavity of the lower end of the rigid tube. The end of the sleeve near the main body extends out of the rigid tube and into the inner ring of the rotating tube. A gear A is fixedly connected to the end of the sleeve extending out of the rigid tube. The outer ring of the gear A meshes in the toothed groove A.

7. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 6, characterized in that: A gear shaft is slidably connected to the lower end of the inner cavity of the rigid tube. The end of the gear shaft near the main body extends into and is slidably connected to the inner cavity of the sleeve. A rotating ring is rotatably connected to the inlet of the negative pressure port of the rigid tube. The outer ring of the rotating ring has a tooth groove B. The outer ring of the gear shaft away from the main body meshes in the tooth groove B. The inner ring of the rotating ring has a groove. A cutter B is rotatably connected in the groove.

8. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 7, characterized in that: The slider is slidably connected to the lower end of the inner cavity of the rigid tube, and the outer ring of the middle section of the gear shaft is rotatably connected to the middle of the inner cavity of the slider. Guide wires B are fixedly connected to both the left and right sides of the upper end of the slider. The other end of the guide wires B passes through the rigid tube and the flexible tube, and extends out from the end of the main body away from the flexible tube. A storage tube is fixedly connected to the lower part of the end of the main body away from the flexible tube. A handle B is slidably connected to the inner cavity of the storage tube. The ends of the two sets of guide wires B that extend out of the main body are fixedly connected to the middle of both sides of the handle B.

9. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 8, characterized in that: A gear ring is rotatably connected to the middle of the outer ring of the rotating ring. A gear B is fixedly connected to the rotating shaft of the cutter B. The outer ring of the gear B meshes with the inner ring of the gear ring, while the outer ring of the gear ring is in contact with the tooth groove B.

10. The minimally invasive puncture biopsy and resection device for pulmonary nodules according to claim 8, characterized in that: A limiting block is slidably connected to the lower end of the inner cavity of the rotating ring. The end of the limiting block near the gear ring passes through the rotating ring and extends into the groove of the outer ring of the gear ring. A compression spring is fixedly connected to the end of the limiting block located in the inner cavity of the rotating ring, and a positioning rod is fixedly connected to the upper end of the limiting block on the side connected to the compression spring. The positioning rod is slidably connected to the lower end of the inner cavity of the rotating ring.

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