A fiberscope surgical system for epidural space

Abstract

The present invention relates to a fiberscope surgical system for epidural space, which belongs to the technical field of medical devices and solves the technical problem that the fiberscope is easy to touch or damage the surrounding tissues or nerves when inserting and operating in the epidural space. The fiberscope surgical system of the present invention includes a fiberscope, a nerve baffle assembly and a puncture needle; the tube portion of the fiberscope is bendable; the nerve baffle assembly includes a baffle body, a first operating mechanism and a limit assembly, and the nerve baffle assembly is detachably sleeved on the periphery of the tube portion and the lens portion; the first operating mechanism includes a baffle pulling wire, a baffle pulling portion and an elastic component; the puncture needle includes a second operating mechanism and a needle tube, and a guide portion and a fixed portion are provided at the opening of the needle tube, and the guide portion is rotatably connected to the fixed portion. The fiberscope surgical system of the present invention can control the insertion direction of the tube portion, effectively shield the nerves, and provide a safe and high-precision surgical system for epidural space surgery.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a fiberscope surgical system for epidural space. Background Art

[0002] With the continuous improvement of medical fiberscope technology, fiberscopes have been widely and maturely used for intracavitary surgeries such as abdominal, gastric and bronchial surgeries. However, due to the narrow space of the epidural space and the dense and abundant nerves and other tissues, the fiberscope is very likely to touch or damage the surrounding tissues or nerves when inserting and operating in the epidural space. Therefore, fiberscope surgery in the epidural space is still very challenging.

[0003] On the one hand, since there is often an angle between the puncture channel and the epidural space, the fiberscope will hit other tissues in the epidural space when it is inserted and reaches the vicinity of the lesion. The curved section of the fiberscope can only control the steering of the front lens head, but cannot control the insertion direction of the entire tube and lens head.

[0004] On the other hand, due to the narrow space of the epidural space, when radiofrequency thermocoagulation or plasma ablation is performed in the epidural space, the nerves near the lesion site are easily damaged or even the dura mater is torn. Therefore, when the objective end of the fiberscope reaches the optimal position, the nearby nerves need to be shielded first. The existing commonly used nerve baffle assembly is a non-bendable tubular shape, which is not suitable for fiberscopes for intraspinal surgery. Moreover, when the nerve baffle assembly is operated outside the patient's body, the positioning position of the objective end of the fiberscope is easily changed, affecting the surgical effect. Summary of the invention

[0005] In view of the above analysis, an embodiment of the present invention aims to provide a fiberscope surgical system for the epidural space to solve the technical problem that the fiberscope is very likely to touch or damage surrounding tissues or nerves during insertion and surgery in the epidural space.

[0006] The purpose of the present invention is mainly achieved through the following technical solutions:

[0007] A fiberscope surgical system for epidural space comprises a fiberscope, a nerve baffle assembly and a puncture needle; the fiberscope comprises an operating part, a mirror tube part and a lens part, and the mirror tube part is bendable; the nerve baffle assembly comprises a baffle body and a first operating mechanism; the nerve baffle assembly is detachably sleeved on the outer periphery of the mirror tube part and the lens part; the baffle body is attached to the outer periphery of the lens part; the first operating mechanism can control the baffle body to extend or retract along the axial centerline direction of the lens part; the puncture needle comprises a second operating mechanism and a needle tube; the inner diameter of the needle tube is greater than the outer diameter of the nerve baffle assembly.

[0008] Furthermore, the fiberscope also includes a tool channel, and openings at both ends of the tool channel are respectively opened on the end faces of the operating portion and the lens portion.

[0009] Furthermore, the mirror tube portion includes a bending section, the bending section is connected to the mirror portion, and the operating portion can control the bending degree and bending direction of the bending section.

[0010] Furthermore, the baffle body is a cylindrical arc-shaped plate, one end of the baffle body is a shielding end, and the other end is a driving end.

[0011] Furthermore, the puncture needle also includes a needle core, the outer diameter of the needle core matches the inner diameter of the needle tube, and the needle core is pluggable and arranged in the needle tube.

[0012] Furthermore, one end surface of the needle core is flush with the opening end surface of the needle tube and both are elliptical.

[0013] Furthermore, the puncture needle also includes a limiting frame, which is detachably fixed on the puncture needle.

[0014] Furthermore, the limiting frame includes a telescopic bracket, and an arc-shaped supporting plate is provided at the protruding end of the telescopic bracket.

[0015] Furthermore, the second operating mechanism includes a needle handle and a guide member, and the guide member is movably connected to the needle handle.

[0016] Furthermore, a guide portion and a fixing portion are provided at the opening of the needle tube. The guide portion is provided at the end of the needle tube, and the guide portion and the fixing portion are rotatably connected.

[0017] Furthermore, the first operating mechanism includes a baffle pulling wire and a baffle pulling portion, and two ends of the baffle pulling wire are fixedly connected to the baffle body and the baffle pulling portion respectively.

[0018] Furthermore, the nerve baffle assembly also includes a limiting component, which is located at the periphery of the baffle body and the baffle pulling wire.

[0019] Furthermore, the limiting component includes a first limiting portion, which is located at the outer periphery of the lens head and is arranged opposite to the driving end.

[0020] Furthermore, the first operating mechanism also includes an elastic component, and the elastic component is located between the driving end and the first limiting portion.

[0021] Furthermore, the baffle pulling part includes a baffle pulling member and a baffle locking member, the baffle pulling member is connected to one end of the baffle pulling wire, the baffle pulling member is a movable member, and the baffle locking member can fix the position of the baffle pulling member.

[0022] Furthermore, the limiting component also includes a second limiting portion, the second limiting portion is sleeved on the outer periphery of the lens head, and the baffle body is located between the second limiting portion and the lens end.

[0023] Furthermore, the limiting component also includes a third limiting portion, the third limiting portion is sleeved on the outer circumference of the mirror tube, and the baffle pulling wire is located between the third limiting portion and the mirror tube portion.

[0024] Furthermore, the rotation axis of the guide portion is located on the open end surface of the needle tube and is perpendicular to the central axis of the needle tube.

[0025] Furthermore, the guide member includes a guide pulling member and a guide pulling wire, one end of the guide pulling wire is fixed at the opening of the guide portion, and the other end is connected to the guide pulling member.

[0026] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0027] (1) The fiberscope surgical system of the present invention can perform epidural surgery by providing a dedicated puncture needle and nerve baffle assembly without changing the internal structure of the existing fiberscope. It has a simple structure, is easy to operate, and is easy to control and master, providing a safe and high-precision surgical system for epidural surgery.

[0028] (2) The fiberscope surgical system of the present invention controls the insertion direction of the scope tube by providing a rotatable guide portion on the puncture needle, which can effectively avoid damage to surrounding tissues during insertion into the epidural space, reduce the difficulty of the operation, and improve the safety and success rate of epidural space surgery.

[0029] (3) The fiberscope surgical system of the present invention achieves the effect of stably and accurately driving the baffle body outside the body by installing a detachable nerve baffle assembly on the fiberscope and driving the baffle body at the periphery of the lens head, thereby achieving the beneficial effect of effectively shielding the nerves near the lesion site during surgery and reducing the incidence of postoperative complications.

[0030] (4) The fiberscope surgical system of the present invention reduces the interference of the baffle body to the position and posture of the fiberscope when the baffle body is extended or retracted by providing a relatively independent baffle body in the nerve baffle assembly and connecting the baffle body with a baffle pulling wire.

[0031] (5) The fiberscope surgical system of the present invention can limit the baffle body at the periphery of the lens head by setting a limiting component in the nerve baffle assembly, so that the baffle body is firmly positioned and the movement is more stable and controllable.

[0032] (6) The fiberscope surgical system of the present invention can limit the baffle pull wire at the outer periphery of the mirror tube by setting a limiting component in the nerve baffle assembly, and can make the baffle pull wire bend synchronously with the mirror tube, thereby ensuring that it will not be twisted or separated from the mirror tube.

[0033] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0035] Figure 1 It is a schematic diagram of the overall structure of a fiberscope surgery system for epidural space according to a specific embodiment;

[0036] Figure 2 It is a schematic diagram of the structure of the fiberscope part of a specific embodiment;

[0037] Figure 3 It is a structural schematic diagram of a puncture needle in a specific embodiment;

[0038] Figure 4 It is a schematic diagram of the partial structure of the puncture needle of a specific embodiment;

[0039] Figure 5 It is a structural schematic diagram of a guide member of a puncture needle in a specific embodiment;

[0040] Figure 6 It is a structural schematic diagram of a limiting frame of a puncture needle in a specific embodiment;

[0041] Figure 7 is a schematic structural diagram of a nerve baffle assembly in a specific embodiment;

[0042] Figure 8 is a schematic diagram of a partial structure of a nerve baffle assembly of a specific embodiment;

[0043] Fig. 9 It is a structural schematic diagram of a pulling assembly of a nerve baffle assembly of a specific embodiment;

[0044] Fig.10 It is a schematic structural diagram of the limiting component of the nerve baffle assembly of a specific embodiment.

[0045] Reference numerals:

[0046] 1-fiberscope; 11-operating part; 12-scope tube; 121-bending section; 13-lens section; 14-tool channel; 2-nerve baffle assembly; 21-baffle body; 211-shielding end; 212-driving end; 22-first operating mechanism; 221-baffle pulling wire; 222-baffle pulling part; 2221-baffle pulling member; 2222-baffle locking member; 223-elastic component; 23-limiting component; 231-first limiting part; 232-first limiting part The second limiting part; 2321-limiting cavity; 2322-elastic band; 233-third limiting part; 2331-limiting through hole; 2332-clamping ring; 3-puncture needle; 31-second operating mechanism; 311-needle handle; 312-guide member; 3121-guide pulling member; 3122-guide pulling wire; 32-needle tube; 321-guide part; 322-fixing part; 323-transfer part; 33-limiting frame; 331-telescopic bracket; 3311-arc support plate. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0048] A specific embodiment of the present invention, as Figure 1 As shown, the present invention provides a fiberscope surgical system for epidural space, comprising a fiberscope 1, a nerve baffle assembly 2 and a puncture needle 3. The nerve baffle assembly 2 is detachably mounted on the outer periphery of the fiberscope 1, and the inner diameter of the needle tube 32 of the puncture needle 3 is greater than the outer diameter of the nerve baffle assembly 2. During the operation, the puncture needle 3 can establish a passage from the body to the epidural space, so that the fiberscope 1 with the nerve baffle assembly 2 can enter the epidural space. Since the fiberscope 1 is a small and soft visual endoscope, when the lens portion 13 of the fiberscope 1 reaches the vicinity of the lesion site in the epidural space, after adjusting the lens portion 13 to the best position, the nerve baffle assembly 2 is operated to effectively shield the nearby nerves, thereby avoiding damage to the nerves in the epidural space during the operation and ensuring the safety of the operation.

[0049] Specifically, Figure 1 and Figure 2As shown, the fiberscope 1 includes an operating part 11, a mirror tube part 12 and a lens part 13. Since the mirror tube part 12 is relatively soft, it can be bent and can be inserted from outside the body and then penetrated into the epidural cavity, so that the lens part 13 reaches the vicinity of the lesion in the epidural cavity; the mirror tube part 12 includes a bending section 121, which is located at the part where the mirror tube part 12 and the lens part 11 are connected. When operating the part 11 outside the body, the bending degree and bending direction of the bending section 121 can be controlled, thereby changing the direction of the end face of the lens part 11. The fiberscope also includes a tool channel 14, which is a channel passing through the axis direction of the fiberscope. The two ends of the tool channel 14 are respectively opened on the surface of the operating part 11 and the lens part 13. The tool channel 14 is used for inserting a surgical tool dedicated to the epidural cavity outside the body during surgery. The internal structure of the fiberscope 1 belongs to the prior art. This embodiment does not need to improve the principle and structure of the existing fiberscope, but only needs to make necessary adjustments to the length and diameter, so it will not be repeated here.

[0050] Optionally, in order to prevent the surgical tools from damaging the surrounding tissues, the end face of the lens head 13 may also include a first end face and a second end face, the first end face is perpendicular to the central axis of the lens head 13, and the angle between the second end face and the first end face is less than 180°. The opening of the tool channel 14 is opened on the first end face, and the objective lens is arranged on the second end face so that the opening of the tool channel 14 can be directly observed without being blocked, thereby better observing and controlling the operation of the surgical tools and improving the safety of the operation.

[0051] like Figure 3 and Figure 4 As shown, considering that there is an angle between the puncture direction and the channel of the epidural space, and the curved section 121 can only control the turning of the lens head 13, but cannot control the insertion direction of the mirror tube portion 12 and the lens head 13 as a whole, the puncture needle 3 of this embodiment is provided with a guide portion 321 at the opening of the needle tube 32 to control the bending direction of the mirror tube portion 12, so that when the mirror tube portion 12 and the lens head 13 penetrate into the epidural space, they always maintain the space in the cavity to prevent touching the nerves or other tissues.

[0052] For example, Figure 4As shown, the puncture needle 3 includes a second operating mechanism 31 and a needle tube 32. The opening of the needle tube 32 is an elliptical inclined opening, and the symmetry plane of the inclined opening coincides with the axis of the needle tube 32. The opening of the needle tube 32 is a split structure, including a guide portion 321, a fixing portion 322 and a switching portion 323. The guide portion 321 is arranged at the tip of the needle tube opening. The guide portion 321 and the fixing portion 322 are rotatably connected through the switching portion 323. The two switching portions 323 are symmetrically arranged on the opening end surface of the needle tube 32, so that the guide portion 321 can rotate toward the opening direction of the fixing portion 322 around the rotation axis formed by the two switching portions 323, so as to achieve the effect of driving the mirror tube portion 12 in the needle tube 32 to bend.

[0053] like Figure 3 and Figure 5 As shown, in order to control the rotation angle of the guide part 321 so as to accurately adjust the curvature of the mirror tube part 12, the second operating mechanism 31 includes a needle handle 311 and a guide member 312, and the guide member 312 is movably connected to the needle handle 311, and can control the rotation of the guide part 321. Exemplarily, the guide member 312 includes a guide pull member 3121 and a guide pull wire 3122, one end of the guide pull wire 3122 is fixed at the opening of the guide part 321, and the other end is connected to the guide pull member 3121. When the guide pull member 3121 is operated in vitro, the guide pull wire 3122 can apply a pulling force to the guide part 321, so as to realize the rotation of the guide part 321 in the epidural space.

[0054] When performing fiberscope surgery in the epidural space, the puncture needle of this embodiment is inserted into the body together with the matching needle core. When the needle head 1 reaches the preset position in the epidural space, the needle core is pulled out and the fiberscope 1 is inserted. Since the lens head 13 is a hard component, when the lens head 13 of the fiberscope 1 is completely exposed from the puncture needle opening, the bending section 121 is first bent by the operating part 11 so that the lens head 13 is basically facing the passage of the epidural space. Then, while continuing to insert the fiberscope 1, the guide member 312 is operated to make the guide wire 3122 pull the guide part 321 to gradually rotate in the opening direction of the fixing part 322. Under the guiding action of the guide part 321, the mirror tube part 12 will not only be able to penetrate along the axis direction of the needle tube 32. Under the joint action of the operating part 11 and the guide member 312, the mirror tube part 12 and the lens head 13 will move in the cavity channel of the epidural space under effective control until the lens head 13 reaches the vicinity of the lesion tissue in the epidural space.

[0055] By providing a guide member 312 and a guide portion 321 on the puncture needle 3, this embodiment can accurately control and adjust the insertion direction of the fiberscope 1 in the body, so that the lens head 13 can smoothly reach the preset position and avoid touching other tissues such as nerves in the epidural space, thereby improving the safety and success rate of epidural space surgery and reducing the incidence of postoperative complications.

[0056] It should be noted that in order for the pulling force of the guide wire 3122 on the guide part 321 to form a torque, one end of the guide wire 3122 needs to be arranged along the opening plane of the needle tube 32 so that the guide part 321 can rotate around the adapter part 323 toward the opening direction of the fixing part 322.

[0057] In order to prevent the guide pulling wire 3122 from interfering with the fiberscope 1 during the pulling process, a through hole or a limiting groove may be arranged on the wall of the needle tube 32 along the axial direction to limit the guide pulling wire 3122 .

[0058] like Figure 5 As shown, the guide member 312 is exemplarily a cylindrical knob, the rotation axis is perpendicular to the guide pull wire 3122, and the guide member 312 can rotate around the rotation axis on the needle handle 311. Since one end of the guide pull wire 3122 is fixed on the guide member 312, one end of the guide pull wire 3122 will be wound around the circumference of the guide member 312 as the guide member 312 rotates. A clamping structure is arranged between the outer periphery of the guide member 312 and the needle handle 311, which can fix the rotation angle of the guide member 312 at a desired position, so that the guide part 321 is fixed at a corresponding rotation angle to ensure that the direction of the mirror tube part 12 remains fixed during insertion. The clamping structure can be an elastic clamping structure, a cam clamping structure or other clamping structures. Optionally, the guide member 312 can also be a component that can slide on the needle handle 311.

[0059] Optionally, the adapter part 323 is an elastic steel sheet integrally formed with the needle tube 32 , and may also be made of medical plastic or silicone to meet the elastic deformation that can be generated by the adapter part 323 when the guide part 321 rotates.

[0060] The puncture needle 3 of this embodiment has a simple structure and is easy to operate. The rotational force applied to the guide portion 321 is more directly controllable, and the insertion direction of the mirror tube portion 12 can be accurately adjusted. In addition, after the mirror portion 13 reaches the position, the puncture needle 3 can also meet the requirement of being pulled out of the body.

[0061] like Figure 6 As shown, in order to prevent the fiberscope 1 from pushing the puncture needle 3 to continue to move into the body when it is inserted into the puncture needle 3, the puncture needle 3 of this embodiment also includes a limit frame 33, which is detachably connected to the needle handle 311, and includes a telescopic bracket 331. The extended end of the telescopic bracket 331 is provided with an arc-shaped support plate 3311, which facilitates the puncture needle 3 to fit the skin at different angles. The outer wall of the telescopic bracket 331 has multiple card points, which can lock the extended length of the telescopic bracket 331.

[0062] like Figures 7 to 10As shown, further, the nerve baffle assembly 2 includes a baffle body 21, a first operating mechanism 22 and a limiting component 23. Specifically, the baffle body 21 is a cylindrical arc plate, which is attached to the outer periphery of the lens portion 13; one end of the baffle body 21 is a shielding end 211, and the other end is a driving end 212, and optionally, the end of the shielding end 211 is arc-shaped; the driving end 212 is connected to the first operating mechanism 22. The first operating mechanism 22 includes a baffle pull wire 221 and a baffle pull portion 222, and the two ends of the baffle pull wire 221 are respectively fixed on the driving end 212 and the baffle pull portion 222. The limiting component 23 is located at the outer periphery of the baffle body 21 and the baffle pull wire 221, and is detachably connected to the fiberscope 1, and is used to limit the baffle body 21 and the baffle pull wire 221 to the outer periphery of the lens portion 13 and the mirror tube portion 12.

[0063] During surgery, the baffle pulling assembly 222 is operated outside the body to move the baffle pulling wire 221 along its length direction, so that the baffle body 21 can be extended or retracted outside the lens portion 13 to effectively shield the surrounding nerves during surgery.

[0064] This embodiment provides a relatively independent baffle body 21 and uses a baffle pulling wire 221 to connect the baffle body 21 , so as to adapt to the curved mirror tube portion 12 , thereby reducing the interference of the baffle body 21 on the position and posture of the fiberscope 1 when the baffle body 21 is extended or retracted.

[0065] like Figure 8 As shown, considering that the mirror tube portion 12 is a slender and bendable component, when the movement of the baffle body 21 is controlled by operating the other end of the baffle pull wire 221 in vitro, it is difficult to achieve precise control of the baffle body 21 because the transmission path of the force is long and curved. To this end, the first operating mechanism 22 of this embodiment also includes an elastic component 223, and the elastic component 223 is a pressure spring. Preferably, the elastic component 223 adopts a serpentine spring sheet, one end of the elastic component 223 is fixed on the driving end 212, and the other end is fixed on the limiting component 23. In order to ensure the balance of the baffle body 21, the number of the baffle pull wire 221 and the elastic component 223 can be a single one or a combination of multiple ones, but they all need to be arranged symmetrically along the center line of the baffle body 21.

[0066] When the driving end 212 is subjected to the pulling force of the baffle pulling wire 221, the elastic component 223 will be compressed and apply a reverse thrust to the baffle body 21 at the driving end 212. When the baffle pulling part 222 is operated to release the baffle pulling wire 221, under the action of the elastic thrust of the elastic component 223, the baffle body 21 will extend outward from the periphery of the lens part 13, thereby playing the role of shielding the nerves.

[0067] In this embodiment, by providing an elastic component 223 at the driving end 212, a thrust can be directly applied to the baffle body 21 along the axis direction, so that the baffle body 21 can be smoothly extended or retracted at the periphery of the lens portion 13, achieving the effect of accurately controlling the baffle body 21. At the same time, the lens portion 13 after positioning will not be shaken or moved, and the position of the mirror tube portion 12 will not be affected, thereby reducing the risk and difficulty of the operation, and improving the success rate and accuracy of the operation.

[0068] like Fig. 9 As shown, the baffle pulling part 222 includes a baffle pulling member 2221 and a baffle locking member 2222. The baffle pulling member 2221 is connected to one end of the baffle pulling wire 221. The baffle pulling member 2221 is a movable member. When it moves, the baffle pulling wire 221 can move along the length direction, thereby controlling the length of the baffle pulling wire 221 in the patient's body, and playing a role in controlling the extension length of the baffle body 21 outside the patient's body. The baffle locking member 2222 can fix the position of the baffle pulling member 2221 so as to lock the baffle body 21 in a desired position. For example, the position of the baffle pulling member 2221 can be locked when the baffle body 21 is not extended or extended to a specified length. There is no need to always fix the position of the baffle pulling member 2221 by hand during surgery, which not only ensures the stability of the position of the baffle body 21, but also frees the doctor's hands to operate other tools.

[0069] Fig. 9 A sliding baffle pulling portion 222 is provided, and the baffle pulling portion 222 may also be a knob-type or other structure with pulling and locking functions.

[0070] like Fig.10 As shown, further, the limiting component 23 includes a first limiting portion 231, a second limiting portion 232 and a third limiting portion 233, which are used to limit the baffle body 21, the baffle pulling wire 221 and the elastic component 223. Optionally, the limiting component 23 is integrally formed of medical materials.

[0071] Specifically, the first limiting portion 231 is used to fix one end of the elastic component 223. Exemplarily, the first limiting portion 231 is an arc-shaped block, the inner wall of the arc-shaped block matches the outer wall of the lens portion 13, the first limiting portion 231 is fixedly sleeved on the outer periphery of the lens portion 13, and is arranged opposite to the driving end 212 along the axis centerline direction, and the elastic component 223 is arranged between the first limiting portion 231 and the driving end 212 along the axis centerline direction. When the baffle body 21 is retracted, the driving end 212 and the first limiting portion 231 compress the elastic component 223. When the baffle body 21 needs to be extended, the baffle pulling wire 221 is released. Due to the limiting effect of the first limiting portion 231 on one end of the elastic component 223, the other end of the elastic component 223 can push the baffle body 21 to extend out of the lens portion 13.

[0072] The second limiting portion 232 is used to limit the circumferential position and radial position of the baffle body 21, and the radial position of the elastic component 223. The second limiting portion 232 has an arc-shaped cylindrical shell, which is sleeved on the outer circumference of the lens head 13. A limiting cavity 2321 is provided between the inner wall of the arc-shaped cylindrical shell and the outer wall of the lens head 13. The limiting cavity 2321 matches the outer shape of the baffle body 21. The baffle body 21, the elastic component 223 and one end of the baffle pulling wire 221 are all arranged in the limiting cavity 2321. Optionally, the second limiting portion 232 includes an elastic band 2322, and the two ends of the elastic band 2322 are fixedly connected to the two sides of the arc-shaped cylindrical shell to facilitate the second limiting portion 232 to be sleeved on the lens head 13.

[0073] The third limiting portion 233 is used to limit the position of the baffle pull wire 221. The third limiting portion 233 is arranged on the outer wall of the mirror tube portion 12 along the length direction of the mirror tube portion 12. The third limiting portion 233 is provided with a limiting through hole 2331. The limiting through hole 2331 is a through hole along the length direction of the mirror tube portion 12, which is used to accommodate the baffle pull wire 221. In order to enable the third limiting portion 233 to be fixed to the outer periphery of the mirror tube portion 12, illustratively, a plurality of clamping rings 2332 can be provided on the third limiting portion 233. By providing the third limiting portion 233, the baffle pull wire 221 can be made to bend synchronously with the mirror tube portion 12, thereby ensuring that it does not twist or separate from the mirror tube portion 12.

[0074] When using the nerve baffle assembly 2, firstly, the second limiting portion 232 is tightly put on the outer periphery of the lens head 13, and the second limiting portion 232 is ensured to be flush with the end of the lens head 13. Then, the third limiting portion 233 is straightened and the plurality of clamping rings 2332 are clamped on the lens tube 12. In the initial state, since the baffle body 21 is located in the limiting cavity 2321, the elastic component 223 is in a compressed state. During the operation, when the lens portion 13 reaches the optimal position and needs to extend the baffle body 21, the baffle pulling portion 222 is operated outside the patient's body to release the lock of the baffle locking piece 2222 on the baffle pulling piece 2221, so that the pulling force of the other end of the baffle pulling wire 221 on the baffle body 21 can be reduced; when the thrust of the elastic component 223 in the compressed state on the baffle body 21 is greater than the pulling force of the baffle pulling wire 221 on the baffle body 21, the baffle body 21 will extend out of the limiting cavity 2321; when it is confirmed that the extended length of the baffle body 21 meets the condition of blocking the nerve, the baffle locking piece 2222 is locked on the baffle pulling piece 2221, thereby locking the position of the baffle body 21 and performing subsequent intraspinal surgeries such as ablation.

[0075] The fiberscope surgical system of this embodiment does not need to change the internal structure of the existing fiberscope, and can be used for epidural space surgery; by operating the operating part 11 of the fiberscope 1, the curvature and curvature direction of the curved section 121 are controlled to adjust the position and direction of the lens part 13; by setting a rotatable guide part 321 on the puncture needle 3, the insertion direction of the mirror tube part 12 is controlled, which can effectively avoid damage to surrounding tissues when inserted into the epidural space, reducing the difficulty of the operation; by installing a detachable nerve baffle assembly 2 on the fiberscope 1 and driving the baffle body 21 on the periphery of the lens part 13, the baffle body 21 is driven stably and accurately in vitro, achieving the beneficial effect of effectively shielding the nerves near the lesion during the operation. The surgical system has a simple structure, convenient operation, easy control and mastery, and provides a safe and high-precision surgical system for epidural space surgery.

[0076] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A fiberscope surgical system for epidural space, characterized in that: It comprises a fiberscope (1), a nerve baffle assembly (2) and a puncture needle (3); The fiberscope (1) comprises an operating portion (11), a mirror tube portion (12) and a lens portion (13), wherein the mirror tube portion (12) is bendable; The nerve baffle assembly (2) comprises a baffle body (21) and a first operating mechanism (22); the nerve baffle assembly (2) is detachably sleeved on the outer periphery of the mirror tube portion (12) and the lens portion (13); the baffle body (21) is attached to the outer periphery of the lens portion (13); The first operating mechanism (22) is capable of controlling the baffle body (21) to extend or retract along the axis direction of the lens portion (13); The first operating mechanism (22) comprises a baffle pulling wire (221), a baffle pulling portion (222) and an elastic component (223); Two ends of the baffle pulling wire (221) are respectively fixed on the driving end (212) of the baffle body (21) and the baffle pulling portion (222); The baffle pulling portion (222) comprises a baffle pulling member (2221) and a baffle locking member (2222), wherein the baffle locking member (2222) can fix the position of the baffle pulling member (2221) so as to lock the baffle body (21) at a desired position; One end of the elastic component (223) is fixed to the driving end (212) of the baffle body (21), and the elastic component (223) can directly apply a thrust along the axis direction on the baffle body (21); The puncture needle (3) comprises a second operating mechanism (31) and a needle tube (32); The second operating mechanism (31) comprises a guide member (312), and the guide member (312) comprises a guide pull member (3121) and a guide pull wire (3122); a guide portion (321) is provided at the opening of the needle tube (32); operating the guide pull member (3121) enables the guide pull wire (3122) to apply a pulling force to the guide portion (321) so that the guide portion (321) rotates, thereby controlling and adjusting the insertion direction of the fiberscope (1) in the body; The inner diameter of the needle tube (32) is greater than the outer diameter of the nerve baffle assembly (2).

2. The fiberscope surgery system for epidural space according to claim 1, characterized in that: The fiberscope (1) further comprises a tool channel (14), and openings at both ends of the tool channel (14) are respectively opened on the end faces of the operating portion (11) and the lens portion (13).

3. The fiberscope surgery system for epidural space according to claim 2, characterized in that: The mirror tube portion (12) comprises a bending section (121), the bending section (121) is connected to the mirror portion (13), and the operating portion (11) is capable of controlling the bending degree and bending direction of the bending section (121).

4. The fiberscope surgery system for epidural space according to claim 1, characterized in that: The baffle body (21) is a cylindrical arc-shaped plate, one end of the baffle body (21) is a shielding end (211), and the other end is a driving end (212).

5. The fiberscope surgery system for epidural space according to claim 1, characterized in that: The puncture needle (3) further comprises a needle core, the outer diameter of the needle core matches the inner diameter of the needle tube (32), and the needle core is arranged in the needle tube (32) in a pluggable manner.

6. The fiberscope surgery system for epidural space according to claim 5, characterized in that: One end surface of the needle core is flush with the opening end surface of the needle tube (32) and both are elliptical.

7. The fiberscope surgery system for epidural space according to claim 6, characterized in that: The puncture needle (3) further comprises a limiting frame (33), and the limiting frame (33) is detachably fixed on the puncture needle (3).

8. The fiberscope surgery system for epidural space according to claim 7, characterized in that: The limiting frame (33) comprises a telescopic bracket (331), and an arc-shaped supporting plate (3311) is provided at the protruding end of the telescopic bracket (33).

9. The fiberscope surgery system for epidural space according to claim 8, characterized in that: The second operating mechanism (31) comprises a needle handle (311) and a guide member (312), wherein the guide member (312) is movably connected to the needle handle (311).

10. The fiberscope surgery system for epidural space according to claim 9, characterized in that: A fixing portion (322) is also provided at the opening of the needle tube (32), and the guide portion (321) is provided at the end of the needle tube (32), and the guide portion (321) is rotatably connected to the fixing portion (322).

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