A thulium laser resection tool for orthopedic surgery

Abstract

This invention relates to the field of medical device technology, and provides a thulium laser resection tool for orthopedic surgery, comprising an expansion tube for penetrating the back tissue of the human body to approach the lesion; a percutaneous endoscopic discectomy unit inserted within the expansion tube; a laser probe inserted within the percutaneous endoscopic discectomy unit; and an extension bracket for mounting on an operating table, the extension bracket having a mounting frame connected to it via a ball joint; a plurality of clamping mechanisms are disposed on the mounting frame, the clamping mechanisms being spaced apart along the axial direction of the expansion tube to form multi-layer axial constraints, which can disperse external force impact and reduce the risk of single-point failure; each clamping mechanism has a plurality of clamping plates that can slide radially, applying radial clamping force from multiple directions to ensure uniform force on the expansion tube and avoid tilting or displacement caused by existing single-point pressure; the ball joint connection between the extension bracket and the mounting frame ensures adjustment flexibility while maintaining positional stability through rigid support, providing a reliable reference for the clamping mechanisms.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of medical device technology, specifically to a thulium laser resection tool for orthopedic surgery. Background Technology

[0002] In orthopedic surgery, thulium laser resection tools, with their precise cutting capabilities, minimal tissue damage, and excellent hemostasis, have become an important tool for removing diseased tissue and establishing access channels in spinal and joint surgeries. During orthopedic procedures, to ensure a clear surgical field and a stable surgical channel, it is often necessary to expand the tissues surrounding the surgical site using an expansion tube. The precise positioning and stable fixation of the expansion tube rely on a matching positioning mechanism.

[0003] However, the positioning mechanism of the thulium laser resection blade used in orthopedic surgery currently suffers from insufficient positioning stability in practical applications. Specifically, the connection structure between the positioning mechanism and the expansion tube is poorly designed, often relying on simple single-layer clamping or single-point pressure for fixation. This results in insufficient connection strength, making them prone to relative displacement during surgery due to instrument vibration, tissue traction, or external force. This displacement not only disrupts the stability of the established surgical channel and affects the precision of the surgical procedure, but may also cause additional damage to surrounding normal tissues from the expansion tube, increasing the risk of complications such as surgical bleeding and nerve damage. In severe cases, it may even require interrupting the surgery and readjusting the positioning, prolonging the operation time and increasing surgical trauma and pain for the patient.

[0004] Therefore, optimizing the structural design of the positioning mechanism, improving its positioning stability of the expansion tube, and avoiding displacement of the expansion tube during surgery has become a pressing technical problem to be solved in the field of thulium laser resection tools for orthopedic surgery. Summary of the Invention

[0005] To overcome the above-mentioned defects, embodiments of the present invention provide a thulium laser resection tool for orthopedic surgery, which solves the technical problem in the prior art where the positioning mechanism for the expansion tube is unstable, making the expansion tube prone to displacement during surgery.

[0006] According to one aspect, at least one embodiment of the present invention provides a thulium laser resection tool for orthopedic surgery, comprising:

[0007] An expansion tube is used to penetrate the tissues of the human back to get closer to the lesion.

[0008] A percutaneous endoscopic discectomypiece is inserted into the dilation tube, and the distal end of the percutaneous endoscopic discectomypiece can extend out of the dilation tube to observe the lesion.

[0009] A laser probe is inserted into the percutaneous endoscopic discectomy unit (PED), and the distal end of the laser probe can extend out of the PED to remove the lesion.

[0010] An extension bracket for mounting on an operating table, the extension bracket having a ball joint with a mounting bracket.

[0011] Several clamping mechanisms are provided on the mounting frame for axially spaced and sleeved on the outer periphery of the expansion tube. Each clamping mechanism has several clamping plates that can slide radially. The clamping plates can slide to abut against the outer peripheral wall of the expansion tube to clamp the expansion tube. The several clamping mechanisms can form an axial multi-layer clamping and positioning of the expansion tube.

[0012] For example, in at least one embodiment of the present invention, a thulium laser resection tool for orthopedic surgery is provided, wherein a guide groove is formed on the top surface of the clamping plate, the extending direction of the guide groove forms an angle with the sliding direction of the clamping plate, and the clamping mechanism further includes:

[0013] A fixed cylinder is mounted on the mounting bracket and has several axially penetrating and circumferentially extending limiting grooves.

[0014] A rotating disk is rotatably connected to the upper part of the fixed cylinder. The rotating disk has several downwardly extending guide rods that slide in a corresponding manner with the limiting slide groove. The guide rods pass through the guide groove and slide in a corresponding manner with the guide groove. Under the rotation of the rotating disk, the guide rods can drive the clamping plate to slide radially along the rotating disk under the combined guiding action of the limiting slide groove and the guide groove to press against the peripheral wall of the expansion tube.

[0015] For example, in a thulium laser resection tool for orthopedic surgery provided in at least one embodiment of the present invention, the clamp has two abutment portions at one end near the center of the rotating disk. The two abutment portions are symmetrically arranged on both sides of the clamp along the sliding direction of the clamp, and the two abutment portions can simultaneously press against the outer peripheral wall of the expansion tube under the sliding action of the clamp.

[0016] For example, in a thulium laser resection tool for orthopedic surgery provided in at least one embodiment of the present invention, each clamping plate of the clamping mechanism adjacent to the mounting frame is provided with an axial limiting block. The axial limiting block is located on the upper part of the clamping plate near the center of the rotating disk. The bottom surface of the axial limiting block is used to abut against the top surface of the expansion tube opening to limit the relative position of the mounting frame and the expansion tube.

[0017] For example, in a thulium laser resection tool for orthopedic surgery provided in at least one embodiment of the present invention, a vertically penetrating receiving groove is provided at one end of the clamp away from the center of the rotating disk. The receiving groove is disposed through the side wall of the clamp and is used to hang surgical instruments.

[0018] For example, in a thulium laser resection tool for orthopedic surgery provided in at least one embodiment of the present invention, the outer peripheral wall of the rotating disk has anti-slip protrusions.

[0019] For example, in at least one embodiment of the present invention, a thulium laser resection tool for orthopedic surgery is provided, which further includes a cleaning mechanism rotatably connected to the upper part of the mounting frame. The cleaning mechanism includes a cleaning cylinder that extends vertically through the laser probe for downward insertion, and a plurality of scrapers that are radially slidably connected to the cleaning cylinder. The scrapers can slide radially to contact the laser probe to clean the peripheral wall of the laser probe as it gradually passes through the cleaning cylinder.

[0020] When the percutaneous endoscopic disc is inserted into the dilation tube, the cleaning mechanism can rotate relative to the mounting frame to avoid the percutaneous endoscopic disc. When the laser probe is inserted into the percutaneous endoscopic disc, the cleaning mechanism can rotate in the opposite direction relative to the mounting frame to be above the clamping mechanism and coaxially arranged with the clamping mechanism, so that the laser probe can pass through the cleaning tube and be inserted into the percutaneous endoscopic disc.

[0021] For example, in a thulium laser resection tool for orthopedic surgery provided in at least one embodiment of the present invention, the cleaning tube is slidably connected to the upper part of the mounting bracket along the axial direction. The cleaning tube can slide close to the clamping mechanism to assist in positioning the percutaneous endoscopic discectomypiece; the cleaning tube can slide away from the clamping mechanism to avoid the percutaneous endoscopic discectomypiece.

[0022] For example, in a thulium laser resection tool for orthopedic surgery provided in at least one embodiment of the present invention, the cleaning mechanism further includes:

[0023] A clearance frame is rotatably and slidably connected to the upper part of the mounting bracket, and the cleaning cylinder is connected to the clearance frame;

[0024] Rotate the gear, which is rotatably connected to the cleaning cylinder;

[0025] Two drive racks are slidably connected to the cleaning cylinder. The two drive racks are located on the upper and lower sides of the rotating gear, respectively. Both drive racks mesh with the rotating gear. The scraper is connected to the end of the drive rack. The drive rack can drive the scraper to slide radially along the cleaning cylinder under the rotation drive of the rotating gear.

[0026] For example, in at least one embodiment of the present invention, a thulium laser resection tool for orthopedic surgery also includes a sludge collection frame connected to one end of the extension bracket near the mounting bracket.

[0027] The beneficial effects of the embodiments of the present invention are as follows:

[0028] In this invention, the positioning stability of the expansion tube is improved through a multi-layer, multi-directional constraint structure. Specifically, this includes: several clamping mechanisms are spaced apart along the axial direction of the expansion tube, forming a multi-layer axial constraint. Compared with existing single-position clamping, this increases the number of constraint points, which can disperse external force impacts and reduce the risk of single-point failure. At the same time, several clamping plates of each clamping mechanism are distributed circumferentially, applying radial clamping force from multiple directions, so that the expansion tube is subjected to uniform force, avoiding tilting or displacement caused by existing single-point pressure. Secondly, the ball joint connection between the extension bracket and the mounting bracket ensures the flexibility of adjustment while maintaining positional stability through rigid support, providing a reliable reference for the clamping mechanism. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of a thulium laser resection tool for orthopedic surgery in one embodiment of the present invention;

[0031] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 for Figure 1 A schematic diagram of the first cross-sectional structure of the thulium laser cutting tool in the embodiment;

[0033] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0034] Figure 5 for Figure 1 A schematic diagram of the second cross-sectional structure of the thulium laser cutting tool in the embodiment;

[0035] Figure 6 for Figure 5 Enlarged view at point C;

[0036] Figure 7 for Figure 1 A schematic diagram of the clamping plate in the embodiment;

[0037] Figure 8 for Figure 1 A schematic diagram of the rotating disk in the embodiment;

[0038] Figure 9 for Figure 1 A schematic diagram of the structure of the fixed cylinder in the embodiment;

[0039] Figure 10 for Figure 1 A schematic diagram of the third cross-sectional structure of the thulium laser cutting tool in the embodiment;

[0040] Figure 11 for Figure 10 Enlarged view at point D;

[0041] Figure 12 for Figure 1 A schematic diagram of the structure after mounting the angle disc on the thulium laser cutting tool in the embodiment;

[0042] Figure 13 for Figure 1 Cross-sectional view of the percutaneous endoscopic disc in the embodiment;

[0043] Figure 14 for Figure 1 A cross-sectional view of the laser probe in the embodiment;

[0044] Figure 15 for Figure 1 The embodiment shows a schematic diagram of the thulium laser cutting tool in use.

[0045] In the diagram: 1. Expansion tube; 2. Percutaneous endoscopic disc; 3. Laser probe; 4. Extension bracket; 5. Mounting bracket; 6. Clamping mechanism; 61. Clamping plate; 611. Guide groove; 62. Fixing cylinder; 621. Limiting slide groove; 63. Rotating disk; 631. Guide rod; 612. Abutment part; 613. Axial limiting block; 632. Anti-slip protrusion; 614. Receiving groove; 7. Cleaning mechanism; 71. Scraper; 72. Clearing frame; 73. Cleaning cylinder; 74. Rotating gear; 75. Transmission rack; 8. Sludge collection frame; 9. Angle disk; 21. Camera channel; 22. Water outlet channel; 23. Water suction channel; 24. Probe channel; 31. Probe housing; 32. Fiber optic layer. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0047] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0048] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0051] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] In orthopedic surgery, the removal of lesions in the spine, joints, and other areas, as well as the establishment of surgical access, often rely on thulium laser resection tools. These tools, with their precise cutting, minimal tissue damage, and excellent hemostasis, have become essential tools in minimally invasive orthopedic surgery. During the procedure, the tissue surrounding the surgical site is expanded using an expansion tube 1 to establish a stable access channel. Simultaneously, the lesion is observed using a percutaneous endoscopic discectomy (PEDD) 2, while the laser probe 3 is used for precise removal of the lesion. However, in existing technologies, the positioning mechanism of the expansion tube 1 generally suffers from insufficient connection strength, making it prone to displacement due to operational vibrations and tissue traction. This affects surgical precision and increases the risk of complications. Therefore, there is an urgent need to optimize the positioning structure design.

[0053] The thulium laser resection tool for orthopedic surgery disclosed in this solution consists of a basic operating component and a positioning auxiliary component. For example... Figures 1-2As shown, the basic operating components include an expansion tube 1, a percutaneous endoscopic disc 2, and a laser probe 3. The expansion tube 1 is a hollow tubular structure used to penetrate the back tissue to approach the lesion area; its axial length is adapted to the tissue depth of the surgical site. The percutaneous endoscopic disc 2 is a slender tube with an outer diameter matching the inner diameter of the expansion tube 1. It can be inserted into the expansion tube 1, and its distal end can extend axially to obtain a clear view of the lesion. The laser probe 3 is a slender structure with an outer diameter matching the inner diameter of the percutaneous endoscopic disc 2. It is inserted into the percutaneous endoscopic disc 2, and its distal end extends out to achieve lesion resection using laser energy.

[0054] The laser probe 3 has a functional opening at its end, the shape of which can be selected according to surgical needs, such as circular, diamond, or straight: a circular opening is suitable for large-area ablation and resection of lesions; a diamond opening is beneficial for sharp cutting of lesion edges to improve boundary clarity; and a straight opening is suitable for resection of linear lesions. Simultaneously, the laser probe 3 has axial graduations evenly distributed along its length. Surgeons can visually determine the length of the laser probe 3 extending beyond the percutaneous endoscope 2 by observing the graduations on the probe, thus precisely controlling the resection depth and avoiding damage to normal tissue due to excessive insertion or residual lesions due to insufficient insertion. Furthermore, the outer sidewall of the laser probe 3 can also have an exit port as needed, allowing laser energy to be output from the end and sidewall in multiple directions, increasing the versatility for treating lesions of different locations and shapes.

[0055] The positioning auxiliary components include an extension bracket 4, a mounting frame 5, and several clamping mechanisms 6. The extension bracket 4 is a rigid bracket, with one end fixed to the operating table for stable support, and the other end connected to the mounting frame 5 via a ball joint structure. The ball joint structure allows the mounting frame 5 to rotate in multiple directions around the connection point, thereby flexibly adjusting its spatial position to adapt to the insertion path of the expansion tube 1. The extension bracket 4 is provided with a set screw for fixing the position of the ball joint, which can be rotated to fix the position of the mounting frame 5. Several clamping mechanisms 6 are axially spaced on the mounting frame 5. Each clamping mechanism 6 includes several circumferentially distributed clamping plates 61, which can slide radially along the mounting frame 5 and are collectively fitted around the outer periphery of the expansion tube 1 for fixation.

[0056] The working process of the above components is as follows: In the initial stage of the operation, the medical staff gradually inserts the expansion tube 1 to the predetermined position close to the lesion, adjusts the position of the mounting bracket 5 through the ball joint structure, and sets each clamping mechanism 6 at intervals along the axial direction of the expansion tube 1; the drive clamp 61 slides radially to abut against the outer peripheral wall of the expansion tube 1, completing the positioning and fixation of the expansion tube 1; then the percutaneous endoscope 2 is inserted along the axial direction of the expansion tube 1, so that its distal end extends out of the expansion tube 1 and is adjusted to a clear angle for observing the lesion; then the laser probe 3 is inserted into the percutaneous endoscope 2, and after the distal end extends out, it is ready for the resection operation.

[0057] like Figure 3 As shown, the ball joint structure refers to the rotating pair realized by the ball connector, which enables the connected parts to rotate at multiple angles in three-dimensional space; radial sliding refers to the linear movement along the radius of the circular structure, which in this case means the movement of the clamping plate 61 towards or away from the center along the direction perpendicular to the axis of the expansion tube 1.

[0058] The core improvement of this solution lies in enhancing the positioning stability of the expansion tube 1 through a multi-layer, multi-directional constraint structure. Specifically, this includes: First, several clamping mechanisms 6 are spaced apart along the axial direction of the expansion tube 1, forming a multi-layer axial constraint. Compared with the existing single-position clamping, this increases the number of constraint points, which can disperse external force impacts and reduce the risk of single-point failure. Second, several clamping plates 61 of each clamping mechanism 6 are distributed circumferentially, applying radial clamping force from multiple directions, making the force on the expansion tube 1 uniform and avoiding tilting or displacement caused by the existing single-point pressure. Third, the ball joint connection between the extension bracket 4 and the mounting bracket 5 ensures the flexibility of adjustment while maintaining positional stability through rigid support, providing a reliable reference for the clamping mechanism 6.

[0059] The effects of these improvements are directly reflected in surgical safety and efficiency: multi-layer axial constraints combined with circumferential multi-directional clamping ensure that the expansion tube 1 is subject to multiple stable constraints in both the axial and radial directions, effectively resisting external forces such as instrument vibration and tissue traction during surgery, and maintaining the stability of the surgical channel; the improved uniformity of force distribution reduces the additional pressure of the expansion tube 1 on surrounding tissues, reducing the risk of complications such as nerve damage and bleeding; stable positioning eliminates the need to interrupt the surgery for readjustment, shortening the operation time and reducing patient trauma.

[0060] Optionally, the axial spacing of the clamping mechanism 6 can be adjusted according to the length of the expansion tube 1 to meet the needs of different surgical sites; the number of clamps 61 can be set to 3-4, distributed at equal angles along the circumference to ensure balanced clamping force.

[0061] like Figures 3-9 As shown, the clamping mechanism 6 further includes a linkage structure of a fixed cylinder 62, a rotating disk 63, and guide rods 631. The fixed cylinder 62 is fixed to the mounting bracket 5, and its circumferential wall has several axially penetrating limiting grooves 621, which are evenly distributed circumferentially. The rotating disk 63 is rotatably connected to the upper part of the fixed cylinder 62, and its bottom surface has guide rods 631 corresponding to the limiting grooves 621 one by one. The guide rods 631 can slide circumferentially along the grooves. The top surface of the clamping plate 61 has a guide groove 611, the extension direction of which forms an angle with the sliding direction of the clamping plate 61. The distal end of the guide rod 631 passes through the guide groove 611 and slides with it. A set screw is also provided on the outer circumferential wall of the fixed cylinder 62, which can be rotated to make the other end of the set screw contact the rotating disk 63 to lock the relative position of the rotating disk 63 and the fixed cylinder 62.

[0062] In this structure, when the rotating disk 63 rotates, the guide rod 631 rotates synchronously with it. Under the combined action of the circumferential constraint of the limiting slide groove 621 and the oblique guidance of the guide groove 611, the guide rod 631 drives the clamping plate 61 to slide radially. When the rotating disk 63 rotates in the forward direction, the clamping plate 61 moves towards the expansion tube 1 to achieve clamping; when rotating in the reverse direction, it slides in the opposite direction to achieve loosening. The rotation of the rotating disk 63 is fixed by the set screw, and the limiting slide groove 621 of the fixing cylinder 62 ensures the stability of the movement trajectory of the guide rod 631. The linkage design between the rotating disk 63 and the guide rod 631 realizes the synchronous movement of all clamping plates 61, ensuring uniform clamping force.

[0063] like Figure 7 As shown, the clamping plate 61 has two symmetrically distributed abutment portions 612 at one end near the center of the rotating disk 63. Each abutment portion 612 is a protrusion extending towards the center, with its end face forming an arc shape adapted to the outer circumferential wall of the expansion tube 1. When the clamping plate 61 slides radially, the two abutment portions 612 simultaneously contact the outer wall of the expansion tube 1, forming a two-point support. This design increases the contact area by increasing the number of contact points, dispersing the clamping force to avoid excessive local stress on the outer wall of the expansion tube 1 and subsequent damage; simultaneously, the two-point constraint enhances the circumferential positioning effect. Optionally, an elastic pad can be provided on the end face of the abutment portion 612 to further buffer pressure while ensuring clamping stability.

[0064] An axial limiting block 613 is provided on the clamping plate 61 of the clamping mechanism 6 (which is positioned higher during use) adjacent to the center of the mounting bracket 5. The axial limiting block 613 is a block-shaped structure extending from the upper part of the clamping plate 61, with a horizontal bottom surface and a height adapted to the top surface of the expansion tube 1 opening. When the clamping plate 61 clamps the expansion tube 1, the bottom surface of the axial limiting block 613 exactly abuts against the top surface of the expansion tube 1 opening, forming an axial constraint. This structure adds axial limiting to the radial clamping, preventing the expansion tube 1 from displacing due to axial force. Optionally, the axial limiting block 613 can be a detachable structure, adjustable according to the model of the expansion tube 1.

[0065] like Figure 4 , Figure 7 As shown, the splint 61 has a through-hole 614 at the end furthest from the center. The groove runs along the side wall of the splint 61 and is sized to fit the hanging positions of commonly used surgical instruments. When surgical forceps, probes, or other instruments need to be temporarily placed during surgery, their hanging positions can be inserted into the groove 614 for easy removal when needed. This design makes full use of the space in the splint 61, providing a convenient storage location and avoiding contamination or inconvenience caused by haphazard placement of instruments. The through-hole structure ensures easy access. Optionally, the inner wall of the groove 614 can be provided with anti-slip protrusions 632 to prevent instruments from accidentally slipping.

[0066] The outer peripheral wall of the rotating disk 63 is provided with several circumferentially evenly distributed strip-shaped anti-slip protrusions 632, which extend radially outward. When the operator rotates the rotating disk 63, the anti-slip protrusions 632 increase the friction between the hand and the rotating disk 63, preventing slippage due to liquid on the hand or uneven force, and ensuring stable operation. This structure is simple and does not affect other functions of the rotating disk 63. Optionally, the anti-slip protrusions 632 can be made of rubber to further enhance the anti-slip effect.

[0067] like Figures 10-11 As shown, the device also includes a cleaning mechanism 7 rotatably connected to the upper part of the mounting frame 5, which includes a cleaning cylinder 73 and several scrapers 71. The cleaning cylinder 73 is a cylindrical structure that runs vertically through the shaft, and the scrapers 71 are radially slidably connected to the inner wall of the cleaning cylinder 73. The cleaning mechanism 7 can rotate around the centerline of the mounting frame 5. When inserting the percutaneous endoscopic discectomypiece 2, the cleaning mechanism 7 rotates to a position away from the axis of the clamping mechanism 6 to avoid obstruction. After the percutaneous endoscopic discectomypiece 2 is inserted, when inserting the laser probe 3, the cleaning mechanism 7 rotates to be directly above the clamping mechanism 6 and is coaxially positioned. The scrapers 71 slide radially until their ends contact the peripheral wall of the laser probe 3. During the process of removing the laser probe 3 from the cleaning cylinder 73, the laser probe 3 can scrape away impurities adhering to the peripheral wall of the laser probe 3 through relative movement.

[0068] This design enables the cleaning function of the laser probe 3. The overall rotatable structure of the cleaning mechanism 7 avoids interference with the installation and insertion of the percutaneous endoscope 2. The coaxial arrangement of the cleaning mechanism 7 and the clamping mechanism 6 ensures the accuracy of the insertion path and reduces deviation. Timely cleaning can ensure the cutting accuracy of the laser probe 3 and reduce the risk of contaminant obstruction.

[0069] The cleaning cylinder 73 is slidably connected to the upper part of the mounting frame 5 along the arrangement direction of the clamping mechanism 6. The mounting frame 5 has a sliding groove. The cleaning cylinder 73 slides closer to or further away from the clamping mechanism 6 through the cooperation of the sliding guide post and the sliding groove. When inserting the percutaneous endoscopic endoscope 2, the cleaning cylinder 73 slides away from the clamping mechanism 6 to provide operating space. After the percutaneous endoscopic endoscope 2 is installed, the cleaning cylinder 73 slides closer to the clamping mechanism 6 so that its lower end is aligned with the entrance of the percutaneous endoscopic endoscope 2, so as to cooperate with the clamping mechanism 6 to assist in positioning the percutaneous endoscopic endoscope 2.

[0070] The cleaning mechanism 7 also includes a clearance frame 72, a rotating gear 74, and two transmission racks 75. The clearance frame 72 is rotatably and slidably connected to the mounting frame 5, and the cleaning cylinder 73 is fixed thereon. The rotating gear 74 is connected to an extended protrusion on the outer wall of the cleaning cylinder 73 via bearings. The two transmission racks 75 are slidably connected to a support frame on the outer wall of the cleaning cylinder 73, and slide in opposite directions, located on the upper and lower sides of the rotating gear 74 and meshing with it. A scraper 71 is connected to the end of the rack. When the gear 74 is rotated, the transmission racks 75 drive the scraper 71 to slide synchronously in opposite directions to achieve opening and closing: the rotating gear 74 rotates forward, causing the scraper 71 to move closer to the laser probe 3 in a synchronous opposite direction. Optionally, the rotating gear 74 can be connected to a knob for easy manual operation by medical personnel.

[0071] like Figure 2 As shown, the device also includes a waste collection frame 8, which is a frame structure with an open top and is fixed to the end of the extension bracket 4 near the mounting frame 5 by a connector. Tissue debris and other contaminants generated during surgery can be temporarily collected in the waste collection frame 8 and cleaned after the surgery.

[0072] like Figure 12 As shown, the device also includes an angle disk 9 installed on top of the cleaning mechanism 7. The angle disk 9 has an angle scale. In use, the laser probe 3 passes through the angle disk 9 and then enters the cleaning mechanism 7. A reference line is marked on the rod of the laser probe 3. The angle disk 9 can prevent dust and other impurities from entering the cleaning mechanism 7. The rotation angle of the laser probe 3 can be read by reading the reference line on the laser probe 3 through the angle scale. The precise scale of the angle disk 9 can greatly reduce the angle adjustment error, avoid cutting deviation caused by visual estimation of the angle, and reduce the risk of nerve and blood vessel damage.

[0073] like Figure 13 The figure shows a cross-sectional schematic diagram of the percutaneous endoscopic discectomy (PEDD) 2. As can be seen from the figure, the PEDD 2 has a camera channel 21, a water outlet channel 22, a water suction channel 23, and a probe channel 24. The camera channel 21 and the probe channel 24 are symmetrically arranged around the midline of the PEDD 2. The camera channel 21 is used to install the camera device, and the probe channel 24 is used for the laser probe 3 to pass through. The water outlet channel 22 and the water suction channel 23 are symmetrically arranged around the midline of the PEDD 2. The water outlet channel 22 and the water suction channel 23 are used for the circulation of the cleaning solution (physiological saline).

[0074] like Figure 14The figure shows a cross-sectional schematic diagram of the laser probe 3. As can be seen from the figure, the laser probe 3 consists of an inner fiber layer 32 and an outer probe shell 31. The two are coaxially arranged. The multiple optical fibers in the fiber layer 32 are evenly distributed, which can make the laser energy form a balanced energy field at the cutting end, avoiding tissue burns caused by excessive energy concentration at a single point. It can achieve precise dissection of diseased tissue in different orthopedic surgeries without damaging the surrounding healthy tissue, further improving the accuracy and safety of the surgery.

[0075] like Figure 15 The diagram shows a scenario where a thulium laser resection tool for orthopedic surgery is installed on the operating table and in actual clinical operation. As shown in the diagram, one end of the extension bracket 4 is fixed to the operating table by a special clamp. The extension bracket 4 extends along the edge of the operating table toward the patient's surgical site (such as the spine or joint area). Its end is connected to the mounting frame 5 by a ball joint structure. Several clamping mechanisms 6 are distributed axially on the mounting frame 5 to fit and fix the expansion tube 1 inserted into the patient's body, ensuring that the expansion tube 1 does not shift or deviate during the operation.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A thulium laser resection tool for orthopedic surgery, characterized by, The utility model relates to a kind of medical equipment, including: Expansion pipe (1), for being arranged in human back tissue to be close to focus; Intervertebral foramen mirror (2), is arranged in the expansion pipe (1), the distal end of the intervertebral foramen mirror (2) can be extended outside the expansion pipe (1) to observe focus; Laser probe (3), is arranged in the intervertebral foramen mirror (2), the distal end of the laser probe (3) can be extended outside the intervertebral foramen mirror (2) to remove focus; Extension support (4), for being installed on operating table, ball joint has mounting frame (5) on the extension support (4) Several clamping mechanisms (6) are arranged on the mounting frame (5), for being axially spaced around the expansion pipe (1), each clamping mechanism (6) has several clamping plates (61) that can slide radially, the clamping plate (61) can be slid to abut with the outer wall of the expansion pipe (1) to clamp the expansion pipe (1), several clamping mechanisms (6) can form axial multi-layer clamping positioning to the expansion pipe (1); It further includes cleaning mechanism (7) that is rotatably connected to the upper portion of the mounting frame (5), the cleaning mechanism (7) includes cleaning cylinder (73) that is through from top to bottom to be downwardly arranged in the laser probe (3), and several scraping plates (71) that are radially slidably connected to the cleaning cylinder (73), the scraping plate (71) can radially slide to contact with the laser probe (3) to clean the peripheral wall of the laser probe (3) gradually passing through the cleaning cylinder (73); Wherein, when the intervertebral foramen mirror (2) is arranged in the expansion pipe (1), the cleaning mechanism (7) can be rotated relative to the mounting frame (5) to avoid the intervertebral foramen mirror (2), when the laser probe (3) is arranged in the intervertebral foramen mirror (2), the cleaning mechanism (7) can be reversely rotated relative to the mounting frame (5) to the above of the clamping mechanism (6) and coaxially arranged with the clamping mechanism (6), so that the laser probe (3) can pass through the cleaning cylinder (73) and be arranged in the intervertebral foramen mirror (2).

2. The surgical cutting tool according to claim 1, wherein The top surface of the clamping plate (61) is provided with a guide groove (611), the extension direction of the guide groove (611) forms an angle with the sliding direction of the clamping plate (61), and the clamping mechanism (6) further includes: Fixed cylinder (62), the fixed cylinder (62) is arranged on the mounting frame (5), and a plurality of limit sliding grooves (621) are arranged on the fixed cylinder (62) and axially through and circumferentially extend; A rotating disc (63) is rotationally connected to the upper portion of the fixed cylinder (62), the rotating disc (63) has a plurality of downwardly extending guide rods (631) which are in one-to-one correspondence with the limiting sliding grooves (621) and are in sliding fit with the limiting sliding grooves (621), the guide rods (631) are in one-to-one correspondence with the guide grooves (611) and are in sliding fit with the guide grooves (611), under the rotation of the rotating disc (63), the guide rods (631) can drive the clamping plate (61) to slide along the radial direction of the rotating disc (63) under the combined guidance of the limiting sliding grooves (621) and the guide grooves (611) to press against the peripheral wall of the dilating tube (1).

3. The surgical erbium laser ablation tool according to claim 2, wherein The clamping plate (61) has two abutting portions (612) at one end close to the center of the rotating disc (63), the two abutting portions (612) are symmetrically arranged on both sides of the clamping plate (61) along the sliding direction of the clamping plate (61), and the two abutting portions (612) can be synchronously pressed against the peripheral wall of the dilating tube (1) under the sliding of the clamping plate (61).

4. The surgical erbium laser ablation tool according to claim 2, wherein Each clamping plate (61) of the clamping mechanism (6) adjacent to the mounting frame (5) is provided with an axial limiting block (613), the axial limiting block (613) is located at the upper portion of one end of the clamping plate (61) close to the center of the rotating disc (63), and the bottom surface of the axial limiting block (613) is used for abutting against the top surface of the tube opening of the dilating tube (1) to limit the relative position of the mounting frame (5) and the dilating tube (1).

5. The surgical erbium laser ablation tool according to claim 2, wherein The clamping plate (61) is provided with an upper and lower through accommodating groove (614) at one end away from the center of the rotating disc (63), the accommodating groove (614) is arranged through the side wall of the clamping plate (61), and the accommodating groove (614) is used for hanging surgical instruments.

6. The surgical erbium laser ablation tool according to claim 2, wherein The rotating disc (63) has anti-skid protrusions (632) on the peripheral wall.

7. The surgical erbium laser ablation tool according to claim 1, wherein the laser beam is a continuous wave laser beam. The cleaning cylinder (73) is axially and slidably connected to the upper portion of the mounting frame (5), the cleaning cylinder (73) can be slid close to the clamping mechanism (6) to assist in positioning the intervertebral foramen mirror (2), and the cleaning cylinder (73) can be slid away from the clamping mechanism (6) to avoid the intervertebral foramen mirror (2).

8. The surgical erbium laser ablation tool according to claim 7, wherein the laser beam is a continuous wave laser beam. The cleaning mechanism (7) further comprises: a giving way frame (72) rotationally and slidably connected to the upper portion of the mounting frame (5), the cleaning cylinder (73) is connected to the giving way frame (72); a rotating gear (74) rotationally connected to the cleaning cylinder (73); two transmission racks (75) each slidably connected to the cleaning cylinder (73), the two transmission racks (75) are respectively located on the upper and lower sides of the rotating gear (74), the two transmission racks (75) are in engagement with the rotating gear (74), the scraper (71) is connected to the end portion of the transmission rack (75), and the transmission rack (75) can drive the scraper (71) to slide along the radial direction of the cleaning cylinder (73) under the rotation of the rotating gear (74).

9. The surgical erbium laser ablation tool according to claim 1, wherein Also included is a dirt collecting frame (8) connected to the extension support (4) near one end of the mounting frame (5).

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