Intervertebral foramen endoscope equipment
By designing a percutaneous endoscopic discectomy device with an injection channel and adjustment components, the problems of cumbersome operation and inaccurate positioning of hydrogel injection in traditional percutaneous endoscopic discectomy techniques have been solved. This has enabled precise injection and uniform distribution of hydrogel, improving surgical outcomes and patient recovery quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING JISHUITAN HOSPITAL
- Filing Date
- 2025-11-05
- Publication Date
- 2026-05-22
AI Technical Summary
In traditional percutaneous endoscopic discectomy, the formation of a cavity within the intervertebral disc after nucleus pulposus removal leads to a loss of height and alteration of the biomechanical environment. In reparative treatment, the injection of hydrogel is cumbersome and has poor positioning accuracy, which can easily lead to improper injection sites, affecting surgical outcomes and patient safety.
Design a percutaneous endoscopic discectomy device with an injection channel and an adjustment component, which allows for accurate injection of hydrogel through the injection channel without removing the tube. The adjustment component allows for flexible adjustment of the drainage port orientation to ensure accurate injection of hydrogel into the cavity.
This method enables precise injection of hydrogel, avoids the risk of secondary puncture, improves the accuracy and uniformity of injection site, reduces patient harm, and enhances surgical and repair outcomes.
Smart Images
Figure CN224265604U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a percutaneous endoscopic discectomy device. Background Technology
[0002] Percutaneous Endoscopic Lumbar Discectomy (PELD) is, simply put, a method of lumbar disc surgery performed through a tiny channel created under the skin, using an endoscope. It is currently the mainstream minimally invasive surgical method for treating lumbar disc herniation. By creating a very small surgical channel, the herniated nucleus pulposus is removed under direct endoscopic visualization, effectively relieving pressure on the nerve root. This technique is widely used due to its advantages of minimal trauma, less bleeding, faster recovery, and minimal impact on spinal stability.
[0003] However, traditional percutaneous endoscopic discectomy (PED) also has an inherent limitation: after nucleus pulposus removal, a cavity may form within the diseased intervertebral disc. This may lead to a certain degree of disc height loss, altering the local biomechanical environment, and theoretically carries the risk of accelerating adjacent vertebral degeneration or long-term nucleus pulposus re-protrusion.
[0004] To address this challenge, the concept of "reparative therapy" has gradually emerged, which involves implanting biomaterials into the intervertebral disc after the herniated nucleus pulposus is removed to repair the defect and restore function. Among these, injectable hydrogels are considered highly promising materials for replacing or repairing artificial nucleus pulposus (NP) due to their good biocompatibility, high water content, ability to gel in situ, and capacity to fill irregular cavities.
[0005] Given the demand for injectable hydrogels under the concept of reparative treatment, the current application of injectable hydrogels in intervertebral disc repair, especially during or after percutaneous endoscopic discectomy (PED), typically employs a second puncture injection method. This is the most intuitive and currently the most likely approach to be explored. After completing the percutaneous endoscopic discectomy, the working channel cannula is withdrawn and the incision is sutured. Subsequently, under X-ray or CT guidance, a separate puncture needle is used to accurately enter the cavity created by the previous discectomy, either through the original or a new approach, to inject the hydrogel. However, this can easily make the procedure cumbersome, prolonging the operation time and affecting the patient's treatment experience. Moreover, the second puncture process can lead to poor positioning accuracy, making it difficult to guarantee precision and potentially resulting in improper hydrogel injection sites, such as mis-injection into the annulus fibrosus or even leakage into the spinal canal or around the nerve roots. This not only renders the procedure ineffective but may also trigger new compression or inflammatory reactions, affecting the surgical outcome. Utility Model Content
[0006] In view of this, the purpose of this utility model is to overcome the shortcomings of related technologies, and this utility model provides a percutaneous endoscopic discectomy device.
[0007] This utility model provides the following technical solution:
[0008] A percutaneous endoscopic discectomy device includes a tube and an adjustment assembly.
[0009] An injection channel parallel to the working channel on the tube body is provided on the side wall of the tube body. The two ends of the injection channel are an inlet and an outlet, respectively. The inlet is connected to an injection device that temporarily stores hydrogel. The outlet can be inserted into the patient's body along with the tube body. An adjustment component is installed on the tube body and is used to adjust the opening orientation of the outlet.
[0010] As a further improvement to the above technical solution, the portion of the injection channel near the insertion end of the tube body is connected to an elastic tube, and the drain port is located at the end of the elastic tube away from the injection channel; the adjustment component can drive the elastic tube to deflect relative to the tube body.
[0011] As a further improvement to the above technical solution, the adjustment component includes a traction line and a sliding sleeve. The sliding sleeve is disposed near the end of the tube body away from the insertion end. One end of the traction line is connected to the end of the elastic tube near the insertion end, and the other end is fitted and connected to the sliding sleeve.
[0012] As a further improvement to the above technical solution, a receiving groove corresponding to the elastic tube is provided on the outer wall of the tube body. When the elastic tube is not pulled by the traction line, the elastic tube can be completely submerged in the receiving groove.
[0013] As a further improvement to the above technical solution, the adjustment assembly further includes an adjustment sleeve, which is fitted onto the tube body by means of a threaded connection, and the sliding sleeve is rotatably assembled and connected to the sliding sleeve; the rotation of the adjustment sleeve relative to the tube body can drive the adjustment sleeve to move along the axial direction of the working channel.
[0014] As a further improvement to the above technical solution, the outer side wall of the adjusting sleeve is evenly covered with anti-slip texture.
[0015] As a further improvement to the above technical solution, a clearance groove corresponding to the traction line is provided on the outer wall of the tube body, and the traction line passes through the clearance groove.
[0016] As a further improvement to the above technical solution, a limiting boss corresponding to the relief groove is provided on the inner side wall of the sliding sleeve. The limiting boss passes through the relief groove, and the end of the traction line away from the elastic tube is assembled and connected to the limiting boss.
[0017] As a further improvement to the above technical solution, the injection channels are axially distributed in multiple ways relative to the axis of the working channel.
[0018] As a further improvement to the above technical solution, a dust plug is installed at the liquid inlet.
[0019] Compared with related technologies, the beneficial effects of this utility model are:
[0020] The percutaneous endoscopic discectomy device provided by this utility model allows medical staff to complete a percutaneous endoscopic discectomy and remove all surgical instruments from the working channel of the tube. This eliminates the need for the traditional procedure of removing the entire tube from the patient's body and performing a second puncture to inject hydrogel into the cavity created during the surgery.
[0021] In practice, medical staff only need to reliably connect the inlet of the injection channel on the tube, located outside the patient's body, to a pre-prepared injection device that temporarily stores an appropriate amount of hydrogel. Then, by operating the injection device, the hydrogel is smoothly and accurately injected into the injection channel. Under pressure, the hydrogel flows smoothly along the injection channel and ultimately enters the cavity created during surgery through the drain port located inside the patient's body, effectively filling this cavity.
[0022] Because the catheter remains in its original position throughout the entire hydrogel injection process, this characteristic greatly ensures that the injection site closely matches the actual surgical site, fundamentally guaranteeing the accuracy of the hydrogel injection. Simultaneously, this procedure effectively avoids the risks associated with secondary punctures and the potential for deviations in the hydrogel injection site due to secondary punctures, thereby minimizing additional harm to the patient.
[0023] Furthermore, medical staff can flexibly adjust the orientation of the drainage port of the injection channel by operating the adjustment component according to the actual surgical needs. This design allows the injection direction of the hydrogel to be optimized according to specific circumstances, ensuring that the hydrogel is evenly distributed within the surgical cavity of the patient's body, thereby effectively improving the uniformity of hydrogel injection within the patient's body.
[0024] In summary, the percutaneous endoscopic discectomy device of this invention significantly improves the postoperative recovery of patients through precise hydrogel injection and flexible directional adjustment, while also creating more favorable conditions for intervertebral disc repair and enhancing the overall repair effect.
[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the percutaneous endoscopic discectomy device from one perspective in one embodiment of the present invention;
[0028] Figure 2 It shows Figure 1 A schematic diagram of the structure at point A in the middle;
[0029] Figure 3 It shows Figure 1 A schematic diagram of the structure at point B from one perspective;
[0030] Figure 4 This diagram shows another perspective view of the percutaneous endoscopic discectomy device in one embodiment of the present invention.
[0031] Explanation of key component symbols:
[0032] 100-Tube body; 101-Insertion end; 110-Working channel; 120-Injection channel; 121-Inlet; 122-Dust plug; 130-Elastic tube; 131-Drain outlet; 140-Receiving groove; 150-Allowing groove; 200-Adjusting component; 210-Traction line; 220-Sliding sleeve; 221-Limiting boss; 230-Adjusting sleeve; 231-Anti-slip texture. Detailed Implementation
[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model.
[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0038] like Figure 1 As shown, an embodiment of this utility model provides a percutaneous endoscopic discectomy device, including a tube body 100 and an adjustment component 200.
[0039] An injection channel 120 parallel to the working channel 110 on the tube body 100 is provided on the side wall of the tube body 100. The two ends of the injection channel 120 are an inlet 121 and an outlet 131, respectively. The inlet 121 is connected to an injection device that temporarily stores hydrogel. The outlet 131 can be inserted into the patient's body along with the tube body 100. The adjustment component 200 is installed on the tube body 100 and is used to adjust the opening orientation of the outlet 131.
[0040] The percutaneous endoscopic discectomy device provided in this embodiment allows medical staff to complete a percutaneous endoscopic discectomy and remove all surgical instruments from the working channel 110 of the tube 100 without having to pull the entire tube 100 out of the patient's body according to the traditional procedure and then perform a second puncture to inject hydrogel into the cavity formed during the surgery.
[0041] In practice, medical staff only need to reliably connect the injection channel 120 on the tube 100 (located outside the patient's body) to the inlet 121, which is a pre-prepared injection device containing a suitable amount of hydrogel. Then, by operating the injection device, the hydrogel is smoothly and accurately injected into the injection channel 120. Under pressure, the hydrogel flows smoothly along the injection channel 120 and ultimately enters the cavity created during surgery through the drain 131 located inside the patient's body, effectively filling this cavity.
[0042] Because the tube 100 remains in its original position throughout the entire hydrogel injection process, this characteristic greatly ensures that the injection site is highly consistent with the actual surgical site, fundamentally guaranteeing the accuracy of the hydrogel injection. At the same time, this method effectively avoids the risks associated with secondary punctures and the problem of deviations in the hydrogel injection site caused by secondary punctures, thereby minimizing additional harm to the patient.
[0043] Furthermore, medical staff can flexibly adjust the orientation of the drainage port 131 of the injection channel 120 by operating the adjustment component 200 according to the actual surgical needs. This design allows the injection direction of the hydrogel to be optimized according to specific circumstances, ensuring that the hydrogel is evenly distributed within the surgical cavity of the patient's body, thereby effectively improving the uniformity of hydrogel injection within the patient's body.
[0044] like Figure 2As shown, in some specific embodiments, the portion of the injection channel 120 near the insertion end 101 of the tube body 100 is connected to an elastic tube 130, and the drain port 131 is located at the end of the elastic tube 130 away from the injection channel 120. When medical personnel need to adjust the orientation of the drain port 131 according to the actual surgical situation, they only need to operate the adjustment component 200, and the elastic tube 130 will deflect at a corresponding angle under its action, thereby driving the drain port 131 to change its orientation, thereby achieving precise adjustment of the orientation of the drain port 131.
[0045] This design offers numerous significant advantages. From an operational perspective, medical staff can easily adjust the orientation of the drain port 131; the operation is simple and quick, requiring no complex steps or specialized skills. In terms of principle, it is based on a simple mechanical drive principle, achieving deflection through the interaction between the adjusting component 200 and the elastic tube 130, making it easy to understand and master.
[0046] like Figure 3 As shown, in some specific embodiments, the adjustment component 200 includes a traction wire 210 and a sliding sleeve 220. The sliding sleeve 220 is located near the end of the tube body 100 away from the insertion end 101. One end of the traction wire 210 is connected to the end of the elastic tube 130 near the insertion end 101, and the other end is assembled and connected to the sliding sleeve 220. This assembly method enables the traction wire 210 to accurately transmit tension as the sliding sleeve 220 moves.
[0047] In actual operation, when medical staff need to adjust the orientation of the drain port 131 according to surgical requirements, they only need to slide the sliding sleeve 220 at the end of the tube 100 located outside the patient's body. As the sliding sleeve 220 moves, the traction wire 210 connected to it is pulled, thereby generating a pulling force on the end of the elastic tube 130 near the insertion end 101. This pulling force will cause the elastic tube 130 to deflect. Since the drain port 131 is located on the elastic tube 130, the deflection of the elastic tube 130 will cause the drain port 131 to change its orientation, thereby achieving precise adjustment of the orientation of the drain port 131. The entire operation process is very convenient. Medical staff do not need to perform complicated operations or use special tools; they can complete the task simply by sliding the sliding sleeve 220.
[0048] Once the orientation of the drain port 131 is adjusted and no longer requires tension on the elastic tube 130, the sliding sleeve 220 is returned to its initial state. At this point, due to the excellent elasticity of the elastic tube 130, after the tension of the traction line 210 is removed, it will gradually regain its shape under its own elasticity, eventually returning to a state of direct connection with the injection tubing. This design allows the adjustment component 200 to be flexibly adjusted during use and easily restored to its original state after adjustment, greatly facilitating the smooth progress of the surgery and making adjustment and use very convenient.
[0049] In some specific embodiments, a receiving groove 140 corresponding to the elastic tube 130 is provided on the outer wall of the tube body 100. When the elastic tube 130 is not pulled by the traction line 210, the elastic tube 130 can be completely submerged in the receiving groove 140. At this time, the elastic tube 130 is flush with the outer wall of the tube body 100 and does not protrude from the surface of the tube body 100.
[0050] This design has crucial practical significance. During the surgery, the tube 100 needs to be inserted into the patient's body through a pre-drilled incision. Since the elastic tube 130 is completely housed within the receiving groove 140, it will not come into contact with the incision edge during insertion, thus avoiding friction and obstruction to the incision caused by the elastic tube 130. This feature not only ensures that the tube 100 can smoothly pass through the incision into the patient's body, guaranteeing the smooth progress of the surgery and avoiding potential problems such as prolonged surgery time and increased operational difficulty due to obstructed insertion, but also minimizes unnecessary harm to the patient's body, reducing the risk of postoperative complications such as incision infection and increased pain, and contributing to the patient's rapid postoperative recovery.
[0051] In some specific embodiments, the adjusting assembly 200 further includes an adjusting sleeve 230, which is threaded onto the tube body 100. The sliding sleeve 220 is rotatably connected to the adjusting sleeve 230. The adjusting sleeve 230 has an annular rotating groove, and the sliding sleeve 220 is embedded in the rotating groove. This structural design ensures that the sliding sleeve 220 can rotate freely within the rotating groove without separating from the adjusting sleeve 230. During actual adjustment, when the adjusting sleeve 230 rotates relative to the tube body 100, it drives the sliding sleeve 220 to move along the axis of the working channel 110. Specifically, the movement of the sliding sleeve 220 along the axis of the tube body 100 is controlled by the rotation of the adjusting sleeve 230. This adjustment method has several advantages.
[0052] On the one hand, because the rotation of the adjusting sleeve 230 causes the sliding sleeve 220 to move at a relatively slow speed, during surgery, medical staff can precisely control the movement distance of the sliding sleeve 220 by slowly rotating the adjusting sleeve 230. This allows for precise adjustment of the tension of the traction line 210 connected to the sliding sleeve 220 on the elastic tube 130, ultimately improving the precision of adjusting the orientation of the drainage port 131. This is crucial for surgeries where the orientation of the drainage port 131 is extremely critical, ensuring that the hydrogel is accurately injected into the target location and improving surgical outcomes.
[0053] On the other hand, the adjusting sleeve 230 can achieve a threaded self-locking function with the tube body 100. Once the medical staff adjusts the drain port 131 to the appropriate orientation, there is no need to manually limit the sliding sleeve 220. Due to the threaded self-locking characteristic, the adjusting sleeve 230 will remain in its current position, thereby fixing the position of the sliding sleeve 220 and ensuring that the orientation of the drain port 131 remains stable. This feature greatly simplifies the operation process, reduces the workload of medical staff, and makes it easier to improve the efficiency of surgery, allowing the surgery to proceed more smoothly.
[0054] like Figure 4 As shown, in some specific embodiments, the outer side wall of the adjustment sleeve 230 is evenly distributed with anti-slip textures 231 to ensure the reliability of medical staff holding the adjustment sleeve 230 for rotation adjustment.
[0055] In some specific embodiments, a clearance groove 150 corresponding to the traction line 210 is formed on the outer wall of the tube body 100, and the traction line 210 passes through the clearance groove 150. In practical applications, the traction line 210 is securely passed through the clearance groove 150. When the equipment is in an unadjusted state, that is, when it is not necessary to change the orientation of the drain port 131 by pulling the elastic tube 130 with the traction line 210, the traction line 210 can be completely inserted into the clearance groove 150. At this time, the traction line 210 will not protrude from the outer wall surface of the tube body 100, but will remain relatively flat with the outer wall of the tube body 100.
[0056] This design has significant practical implications. During the insertion of the tube 100 into the patient's body through a pre-drilled incision, the traction suture 210 is completely contained within the relief groove 150, preventing direct contact with the incision edge. This effectively reduces the obstruction the traction suture 210 poses to the insertion of the tube 100, avoiding problems such as difficulty in insertion and prolonged surgery time caused by friction between the traction suture 210 and the incision. Simultaneously, it reduces the risk of damage to surrounding tissues caused by the traction suture 210, decreasing the likelihood of postoperative complications such as incision pain and infection, thus providing strong support for the smooth progress of the surgery and the patient's postoperative recovery.
[0057] In some specific embodiments, a limiting boss 221 corresponding to the relief groove 150 is provided on the inner side wall of the sliding sleeve 220. The limiting boss 221 passes through the relief groove 150, and the end of the traction line 210 away from the elastic tube 130 is assembled and connected to the limiting boss 221. When the sliding sleeve 220 is installed on the tube body 100, the limiting boss 221 will be stably inserted into the relief groove 150, and a tight and reasonable fit relationship is formed between the two.
[0058] Meanwhile, the end of the traction wire 210 facing away from the elastic tube 130 is assembled and connected to the limiting boss 221. This connection method ensures stable and accurate force transmission between the traction wire 210 and the sliding sleeve 220. In actual operation, this design plays a crucial limiting role. Since the limiting boss 221 is confined within the clearance groove 150, which extends along the axial direction of the tube body 100, the movement trajectory of the sliding sleeve 220 is structurally restricted, ensuring that it only moves along the axial direction of the tube body 100.
[0059] During adjustment, the adjusting sleeve 230 will rotate. Without the limiting boss 221 and the relief groove 150, the sliding sleeve 220 might rotate along with the adjusting sleeve 230. Once the sliding sleeve 220 rotates, it will change the direction of the tension force of the traction line 210 on the elastic tube 130, causing a deviation in the orientation adjustment of the drain port 131, which will seriously affect the adjustment accuracy. However, with the cooperation of the limiting boss 221 and the relief groove 150, the sliding sleeve 220 can be effectively prevented from rotating with the adjusting sleeve 230. This ensures that when the sliding sleeve 220 pulls the traction line 210, the direction of the force is always along the axis of the tube body 100, thereby ensuring the traction accuracy and reliability of the sliding sleeve 220 on the traction rope, and providing a solid guarantee for the adjustment of the orientation of the drain port 131 during surgery.
[0060] In some specific embodiments, the injection channels 120 are axially distributed in multiple ways relative to the working channel 110, which facilitates the injection of hydrogel into the surgical cavity of the patient and improves surgical efficiency.
[0061] In some specific embodiments, the inlet 121 is equipped with a dust plug 122. In actual use, when the injection channel 120 is not in use, dust and other foreign objects may be present in the surgical environment or equipment storage environment. Once these foreign objects enter the injection channel 120, they will not only contaminate the inside of the channel and affect the purity of the subsequently injected liquid, but may also breed bacteria, posing an infection risk to the patient. The dust plug 122 acts as a strong barrier, effectively preventing dust and other foreign objects from entering the injection channel 120, ensuring the cleanliness of the inside of the injection channel 120 from the source.
[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A percutaneous endoscopic discectomy device, characterized in that, include: The tube (100) has an injection channel (120) on its side wall that is parallel to the working channel (110) on the tube (100). The two ends of the injection channel (120) are an inlet (121) and a outlet (131), respectively. The inlet (121) is connected to an injection device that temporarily stores hydrogel. The outlet (131) can be inserted into the patient's body along with the tube (100). An adjustment component (200) is installed on the tube body (100) and is used to adjust the opening orientation of the drain port (131).
2. The percutaneous endoscopic discectomy device according to claim 1, characterized in that, The portion of the injection channel (120) near the insertion end (101) of the tube body (100) is connected to an elastic tube (130), and the drain port (131) is located at the end of the elastic tube (130) away from the injection channel (120); the adjustment component (200) can drive the elastic tube (130) to deflect relative to the tube body (100).
3. The percutaneous endoscopic discectomy device according to claim 2, characterized in that, The adjustment assembly (200) includes a traction line (210) and a sliding sleeve (220). The sliding sleeve (220) is located near the end of the tube body (100) away from the insertion end (101). One end of the traction line (210) is connected to the end of the elastic tube (130) near the insertion end (101), and the other end is assembled and connected to the sliding sleeve (220).
4. The percutaneous endoscopic discectomy device according to claim 3, characterized in that, The outer wall of the tube body (100) is provided with a receiving groove (140) corresponding to the elastic tube (130). When the elastic tube (130) is not pulled by the traction line (210), the elastic tube (130) can be completely submerged in the receiving groove (140).
5. The percutaneous endoscopic discectomy device according to claim 3, characterized in that, The adjustment assembly (200) further includes an adjustment sleeve (230), which is threaded onto the tube body (100). The sliding sleeve (220) and the adjustment sleeve (230) are rotatably connected. The rotation of the adjustment sleeve (230) relative to the tube body (100) can drive the sliding sleeve (220) to move along the axial direction of the working channel (110).
6. The percutaneous endoscopic discectomy device according to claim 5, characterized in that, The outer wall of the adjusting sleeve (230) is evenly covered with anti-slip textures (231).
7. The percutaneous endoscopic discectomy device according to claim 3, characterized in that, The outer wall of the tube (100) is provided with a clearance groove (150) corresponding to the traction line (210), and the traction line (210) passes through the clearance groove (150).
8. The percutaneous endoscopic discectomy device according to claim 7, characterized in that, The inner wall of the sliding sleeve (220) is provided with a limiting boss (221) corresponding to the relief groove (150). The limiting boss (221) passes through the relief groove (150). The end of the traction line (210) away from the elastic tube (130) is assembled and connected to the limiting boss (221).
9. The percutaneous endoscopic discectomy device according to any one of claims 1 to 8, characterized in that, The injection channels (120) are axially distributed in multiple ways relative to the axis of the working channel (110).
10. The percutaneous endoscopic discectomy device according to any one of claims 1 to 8, characterized in that, The liquid inlet (121) is equipped with a dust plug (122).