Nerve dissector

Abstract

The invention discloses a nerve detacher, and relates to the field of surgical tools. The nerve detacher comprises a cutting base, and a ligamentum flavum cutting unit and a ligamentum flavum separating unit are arranged on the cutting base. According to the nerve detacher, through the arrangement of the ligamentum flavum separating unit and the ligamentum flavum cutting unit, when the ligamentum flavum is cut, the second driving mechanism is used for driving the multiple sets of arc-shaped hook needles to rotate and prick into the ligamentum flavum, the nerve detacher is directly lifted through external force, and then the ligamentum flavum can be stressed and separated from the dura mater; subsequently, the ligamentum flavum is cut through the cutting action of a cutting tool bit in the ligamentum flavum cutting unit to quickly form a target incision, the cutting mode does not cause dura mater injury and the conditions of subsequent dura mater damage, cerebrospinal fluid leakage and iatrogenic injury increase, and the nerve detacher is simple to operate and high in practicability. The stability of the post-operation spine of the patient is guaranteed, and the spine fixing device is suitable for being used and popularized.

Description

Technical Field

[0001] The invention relates to the technical field of surgical tools, in particular to a nerve stripper. Background Art

[0002] A nerve stripper is an instrument used for nerve dissection and protection during surgery. It exposes the nerve and maintains its integrity by gently stripping the surrounding tissue. In spinal surgery, the yellow ligament between the lamina needs to be removed during laminectomy or fenestration decompression. The previous solution required the use of a nerve stripper, which was used to carefully separate the adhesions and then gradually cut open with a lamina rongeur. The yellow ligament is a layer of dense yellow connective tissue, starting from the deep surface of the lower part of the upper lamina at the proximal end and ending at the shallow surface of the upper part of the lower lamina at the distal end. The inner side is integrated with the interspinous ligament. The yellow ligament plays a certain role in the stability of the posterior column of the spine, while protecting the underlying dura mater.

[0003] Since the yellow ligament is adhered to the dura mater, and the lamina rongeurs are suitable for biting off harder bones, the tough yellow ligament can only be removed by a method that is almost tearing it apart. The dura mater is very easy to be damaged during the removal process. In this way, damage to the deep dura mater often leads to dura mater rupture and cerebrospinal fluid leakage, which increases iatrogenic injury. Subsequent remedial measures need to be repaired, which causes low intracranial pressure headaches, prolonged drainage tube placement time, and increased infection rates after surgery. The entire surgical process not only increases the patient's hospitalization time and costs, but on the other hand, when the inner side of the yellow ligament is removed, the interspinous ligament is easily torn off when it is torn off with the lamina rongeurs, thereby affecting the stability of the posterior column of the spine. In view of the deficiencies in the prior art, the present invention provides a nerve stripper to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a nerve stripper. Through the provision of a yellow ligament separation unit and a yellow ligament cutting unit, when performing resection of the yellow ligament, firstly, a second driving mechanism is utilized to drive multiple groups of arc-shaped hook needles to rotate and penetrate into the inside of the yellow ligament. The yellow ligament can be directly lifted by external force so that the yellow ligament is separated from the dura mater by force. Subsequently, the yellow ligament is cut by the cutting action of the cutting head in the yellow ligament cutting unit to quickly form a target incision. This cutting method will not cause dura mater damage and subsequent dura mater damage, cerebrospinal fluid leakage, and increased iatrogenic injury. Moreover, the nerve stripper is easy to operate. No other tools are required when making a target incision on the yellow ligament. It can be operated with one hand, which reduces the patient's pain and physical injury and ensures the stability of the patient's spine after surgery. The nerve stripper is suitable for popularization and use.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a nerve stripper, comprising a cutting base, on which: The yellow ligament cutting unit comprises a cutting head slidably connected to the bottom of the cutting base and a first driving mechanism arranged on the cutting base, wherein the first driving mechanism is used to drive the cutting head to move and perform cutting action; Ligamentum flavum separation unit, including: A main support frame, slidably connected to both sides of the cutting base; A lifting and adjusting platform is arranged on the main supporting frame; An angle adjustment frame, arranged at the bottom of the lifting adjustment platform; A fixed bracket, fixedly connected to the bottom of the angle adjustment frame; A ligamentum flavum fitting seat, fixedly connected to the fixing bracket; An arc-shaped hook needle is arranged at the bottom of the yellow ligament fitting seat; The second driving mechanism is arranged on the ligamentum flavum fitting seat and is used for driving the arc-shaped hook needle to embed into the ligamentum flavum.

[0006] Preferably, the first driving mechanism comprises: A first sprocket, rotatably connected to the inner cavity of the cutting base; a second sprocket rotatably connected to the inner cavity of the cutting base; A chain, sleeved on the first sprocket and the second sprocket and used for supporting the cutting head; The first motor is arranged on the cutting base, and the output end of the first motor is connected to the second sprocket.

[0007] Preferably, a column is fixedly connected to the cutting base, a first guide rail is fixedly connected to the column, a sleeve is fixedly connected to the main support frame, and the main support frame and the sleeve are slidably connected to the first guide rail; A double-threaded screw rod is rotatably connected to the cutting base, and the double-threaded screw rod is threadedly connected to the main support frame.

[0008] Preferably, a second guide rail is fixedly connected to the main support frame, and the lifting and adjusting platform is slidably connected to the second guide rail; A threaded rod is threadedly connected to the main support frame, and the threaded rod is rotatably connected to the lifting and adjusting platform.

[0009] Preferably, a fixed shaft is provided at the bottom of the lifting and adjusting platform, and nut positioning seats are threadedly connected on both sides of the fixed shaft; The angle adjustment frame is provided with a shaft seat, which is rotatably connected to the fixed shaft and movably clamped between the nut positioning seats.

[0010] Preferably, the second driving mechanism comprises: A positioning shaft, rotatably connected to the ligamentum flavum fitting seat; A rotating wheel, arranged on the positioning shaft; A fan-shaped plate is arranged on the rotating wheel, and the arc-shaped hook is fixedly connected to the fan-shaped plate; A second bevel gear is arranged on the positioning shaft; A second motor is arranged on the angle adjustment frame; The first bevel gear is arranged at the output end of the second motor, and the first bevel gear is meshed with the second bevel gear.

[0011] Preferably, a limiting plate is fixedly connected to the output rod of the second motor, a positioning lever is fixedly connected to the limiting plate, and a vertical blocking rod is provided at the bottom of the fixed bracket.

[0012] Preferably, the ligamentum flavum fitting seat is provided with a plurality of rotation grooves corresponding to the positions of the arc-shaped hook needles.

[0013] Preferably, a handle is fixedly connected to the column.

[0014] Preferably, the handheld portion is provided with a power supply, a cable and a switch for controlling the first driving mechanism and the second driving mechanism.

[0015] The present invention discloses a nerve stripper, which has the following beneficial effects: 1. The nerve stripper, through the arrangement of the yellow ligament separation unit and the yellow ligament cutting unit, when performing the removal of the yellow ligament, firstly utilizes the second driving mechanism to drive multiple groups of arc-shaped hook needles to rotate and pierce into the inside of the yellow ligament, directly lifts the nerve stripper by external force to separate the yellow ligament from the dura mater, and then cuts the yellow ligament through the cutting action of the cutting head in the yellow ligament cutting unit to quickly form a target incision. This cutting method will not cause dura mater damage and subsequent dura mater damage, cerebrospinal fluid leakage, and increased iatrogenic injury. In addition, the nerve stripper is easy to operate, and no other tools are required to cooperate when making a target incision on the yellow ligament. It can be operated with one hand, which reduces the patient's pain and physical injury, and ensures the stability of the patient's spine after surgery. It is suitable for popularization and use.

[0016] 2. For the nerve stripper, when the second motor drives the arc hook to move, the output end of the second motor simultaneously drives the limit plate to rotate, and the limit plate drives the positioning lever to rotate. When the positioning lever is in contact with the vertical blocking rod, the position of the arc hook is limited. That is, the arc hook is controlled to be designed with limit protection in the initial position and during the puncture process to prevent excessive rotation, avoid equipment failure causing tearing damage to the patient, and use the limit to protect the traction part of the patient.

[0017] 3. This nerve stripper is suitable for stripping and cutting of yellow ligaments of different shapes and thicknesses; First, it is convenient to adjust the distance between the two sets of total support frames, and then adjust the positions of the lifting adjustment platform, the angle adjustment frame, the fixed bracket and the yellow ligament fitting seat, so as to adjust the distance between the puncture positions of the two rows of arc-shaped hook needles; Secondly, it is convenient to adjust the cutting depth of the cutting head. The adjustment principle is to adjust the angle adjustment frame, the fixing bracket and the height position of the yellow ligament fitting seat relative to the total support frame according to the thickness of the yellow ligament in the pathological image, so that the horizontal height spacing between the arc hook and the cutting head changes, thereby adjusting the cutting depth of the cutting head; Thirdly, it is convenient to adjust the puncture angle of the arc-shaped crochet needle. The principle is to use the connection position between the lifting adjustment platform and the angle adjustment frame to achieve angle adjustment, and then adjust the angles of the fixed bracket, the yellow ligament fitting seat and the arc-shaped crochet needle. The adjusted angle can ensure that the yellow ligament fitting seat fits the yellow ligament, thereby making the puncture effect of the arc-shaped crochet needle better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cutting blade head and the arc-shaped hook hook of the present invention; Figure 3 It is a structural schematic diagram of the handheld part of the present invention; Figure 4 It is a connection schematic diagram of the general support frame of the present invention; Figure 5 It is a connection schematic diagram of the double-threaded screw rod of the present invention; Figure 6 is a cross-sectional view of a cutting base of the present invention; Figure 7 It is a structural schematic diagram of the sleeve of the present invention; Figure 8 It is a structural schematic diagram of the positioning shaft of the present invention; Fig. 9 It is a structural schematic diagram of the arc-shaped crochet hook of the present invention; Fig.10 It is a connection schematic diagram of the angle adjustment frame of the present invention; Fig.11 It is a structural schematic diagram of the axle seat of the present invention; Fig.12 It is a connection diagram of the lifting and adjusting platform of the present invention; Fig.13 It is a schematic diagram of the insertion depth of the arc-shaped crochet hook of the present invention.

[0020] In the figure: 1. cutting base; 101. column; 102. first guide rod; 103. sleeve; 104. double-threaded screw; 2. cutting head; 201. first sprocket; 202. second sprocket; 203. chain; 204. first motor; 3. main support frame; 301. second guide rod; 302. threaded rod; 4. lifting adjustment platform; 401. fixed shaft; 402. nut positioning seat; 403. shaft seat; 5. angle adjustment frame; 501. second motor; 502. first bevel gear; 503. limit plate; 504. vertical stop rod; 505. positioning lever; 6. fixed bracket; 7. yellow ligament fitting seat; 701. rotating groove; 8. arc hook; 801. positioning shaft; 802. rotating wheel; 803. fan-shaped plate; 804. second bevel gear; 9. hand-held part. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The embodiment of the present application provides a nerve stripper to solve the problem of the prior art that when the yellow ligament between the vertebrae needs to be removed during spinal surgery, the vertebral lamina bone-cutting forceps are suitable for biting off harder bones. The tough yellow ligament is often removed in a manner that is almost tearing it apart, and the dura mater is easily damaged during the removal process. As a result, damage to the deep dura mater often results in dura mater rupture, cerebrospinal fluid leakage, and increased iatrogenic injuries.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The embodiment of the present invention discloses a nerve stripper, according to the attached Figure 1-13 As shown, it includes a cutting base 1, and the cutting base 1 is provided with: The ligamentum flavum cutting unit comprises a cutting head 2 slidably connected to the bottom of a cutting base 1 and a first driving mechanism arranged on the cutting base 1, wherein the first driving mechanism is used to drive the cutting head 2 to move and perform cutting actions; Ligamentum flavum separation unit, including: A main support frame 3 is slidably connected to both sides of the cutting base 1; A lifting and adjusting platform 4 is arranged on the main supporting frame 3; An angle adjustment frame 5 is arranged at the bottom of the lifting adjustment platform 4; A fixed bracket 6, fixedly connected to the bottom of the angle adjustment bracket 5; The yellow ligament fitting seat 7 is fixedly connected to the fixing bracket 6; An arc-shaped hook needle 8 is arranged at the bottom of the yellow ligament fitting seat 7; The second driving mechanism is arranged on the yellow ligament fitting seat 7 and is used for driving the arc-shaped hook needle 8 to embed into the yellow ligament.

[0025] First, the second driving mechanism is used to drive multiple groups of arc-shaped hook needles 8 to rotate and penetrate into the yellow ligament. The nerve stripper can be lifted directly by external force to separate the yellow ligament from the dura mater. Subsequently, the yellow ligament is cut by the cutting action of the cutting head 2 in the yellow ligament cutting unit to quickly form the target incision.

[0026] The first driving mechanism comprises: The first sprocket 201 is rotatably connected to the inner cavity of the cutting base 1; The second sprocket 202 is rotatably connected to the inner cavity of the cutting base 1; The chain 203 is sleeved on the first sprocket 201 and the second sprocket 202 and is used to support the cutting head 2; A first motor 204 is disposed on the cutting base 1, and an output end of the first motor 204 is connected to the second sprocket 202; When the cutting head 2 in the yellow ligament cutting unit is performing the cutting action, it is driven by the first motor 204, the first motor 204 drives the second sprocket 202 to rotate, the second sprocket 202 drives the chain 203 to rotate, the chain 203 drives the first sprocket 201 to rotate, and the chain 203 synchronously drives the cutting head 2 to move. When the cutting head 2 is laterally displaced at the bottom of the cutting base 1, the yellow ligament cutting action can be achieved.

[0027] The second driving mechanism comprises: The positioning shaft 801 is rotatably connected to the yellow ligament fitting seat 7; The rotating wheel 802 is disposed on the positioning shaft 801; The fan-shaped plate 803 is arranged on the rotating wheel 802, and the arc-shaped hook needle 8 is fixedly connected to the fan-shaped plate 803; The second bevel gear 804 is disposed on the positioning shaft 801; The second motor 501 is arranged on the angle adjustment frame 5; The first bevel gear 502 is disposed at the output end of the second motor 501 , and the first bevel gear 502 is meshed with the second bevel gear 804 .

[0028] When the second driving mechanism is used to drive the arc hook needle 8 to move, the second motor 501 is driven, the second motor 501 drives the first bevel gear 502 to move, the first bevel gear 502 drives the second bevel gear 804 to move, the second bevel gear 804 drives the positioning shaft 801 to rotate, the positioning shaft 801 drives the multiple sets of rotating wheels 802 to rotate, the rotating wheels 802 drive the fan-shaped plate 803 to move, and the fan-shaped plate 803 drives the arc hook needle 8 to move, so that the arc hook needle 8 can achieve internal puncture of the yellow ligament of the patient when it rotates, which is convenient for subsequent traction; Usually, the standard of yellow ligament hypertrophy varies depending on individual body shape and location of the yellow ligament. It should be analyzed specifically according to the location of the cervical spine, lumbar spine, thoracic spine and imaging conditions. The hypertrophic yellow ligament is usually greater than 1.5mm thick. Fig.13 As shown, for most patients, it is only necessary to design the arc hook needle 8 so that the distance "H" between the lowest position of the arc hook needle 8 and the bottom plane of the yellow ligament fitting seat 7 is less than 1.5 mm after the puncture action. Since the puncture depth of the arc hook needle 8 must be less than the thickness of the patient's yellow ligament, the yellow ligament is pulled and limited by rotating puncture of multiple groups of arc hook needles 8, and the dura mater will not be damaged during the puncture process; Furthermore, a limit plate 503 is fixedly connected to the output rod of the second motor 501, and a positioning lever 505 is fixedly connected to the limit plate 503. A vertical baffle 504 is provided at the bottom of the fixed bracket 6. During the movement of the arc hook needle 8 driven by the second motor 501, the output end of the second motor 501 simultaneously drives the limit plate 503 to rotate, and the limit plate 503 drives the positioning lever 505 to rotate. When the positioning lever 505 is in contact with the vertical baffle 504, the position of the arc hook needle 8 is limited, that is, the arc hook needle 8 is controlled to be designed with limit protection in the initial position and during the puncture process to prevent excessive rotation, avoid equipment failure causing tearing damage to the patient, and use the limit to protect the patient's traction part.

[0029] The yellow ligament fitting seat 7 is provided with multiple groups of rotating grooves 701 corresponding to the positions of the arc-shaped hook needle 8. The rotating grooves 701 provide limiting functions for the arc-shaped hook needle 8, the fan-shaped plate 803 and the rotating wheel 802 to ensure that the position of the arc-shaped hook needle 8 is not easily displaced during the rotating puncture process, thereby stabilizing the puncture process.

[0030] Furthermore, the cutting base 1 is fixedly connected with a column 101, the column 101 is fixedly connected with a first guide rail rod 102, the main support frame 3 is fixedly connected with a sleeve 103, and the main support frame 3 and the sleeve 103 are slidably connected to the first guide rail rod 102; A double-threaded screw rod 104 is rotatably connected to the cutting base 1, and the double-threaded screw rod 104 is threadedly connected to the main support frame 3; The device is convenient for adjusting the distance between the two sets of total support frames 3, and then adjusting the positions of the lifting adjustment platform 4, the angle adjustment frame 5, the adjustment fixing bracket 6 and the yellow ligament fitting seat 7, so as to adjust the distance between the two sets of yellow ligament fitting seats 7, so that the yellow ligament fitting seat 7 can adapt to the required yellow ligament incision position; When adjusting, just rotate the double-threaded screw 104 directly. The double-threaded screw 104 drives the total support frame 3 to move, and the total support frame 3 drives the sleeve 103 to slide along the first guide rod 102, thereby realizing the adjustment of the distance between the two groups of total support frames 3. The total support frame 3 simultaneously drives the lifting adjustment platform 4, the angle adjustment frame 5, the adjustment fixed bracket 6 and the yellow ligament fitting seat 7 to move, thereby realizing the adjustment of the puncture position spacing of the two rows of arc-shaped hook needles 8.

[0031] Furthermore, the main support frame 3 is fixedly connected to a second guide rail rod 301, and the lifting and adjusting platform 4 is slidably connected to the second guide rail rod 301; A threaded rod 302 is threadedly connected to the main support frame 3 , and the threaded rod 302 is rotatably connected to the lifting and adjusting platform 4 .

[0032] The device is convenient for adjusting the cutting depth of the cutting head 2. The adjustment principle is that, according to the thickness of the yellow ligament in the pathological image, the angle adjustment frame 5, the fixing bracket 6 and the yellow ligament fitting seat 7 are adjusted relative to the total support frame 3, so that the horizontal height spacing between the arc hook needle 8 and the cutting head 2 is changed, thereby adjusting the cutting depth of the cutting head 2; When adjusting, just rotate the threaded rod 302 directly, and use the threaded rod 302 to drive the lifting and adjusting platform 4 to slide along the second guide rod 301. The lifting and adjusting platform 4 drives the angle adjustment frame 5, the adjustment fixed bracket 6, the yellow ligament fitting seat 7 and the arc hook 8 to move relative to the cutting base 1, the cutting head 2, and the main support frame 3, so that the horizontal height spacing of the arc hook 8 and the cutting head 2 changes.

[0033] Furthermore, a fixed shaft 401 is provided at the bottom of the lifting and adjusting platform 4, and nut positioning seats 402 are threadedly connected to both sides of the fixed shaft 401; The angle adjustment frame 5 is provided with a shaft seat 403 , which is rotatably connected to the fixed shaft 401 and movably clamped between the nut positioning seats 402 .

[0034] The device is convenient for adjusting the puncture angle of the arc hook needle 8. The principle is to use the connection position between the lifting adjustment platform 4 and the angle adjustment frame 5 to achieve angle adjustment, and then adjust the angles of the fixed bracket 6, the yellow ligament fitting seat 7 and the arc hook needle 8. The angle adjustment can ensure that the yellow ligament fitting seat 7 fits the yellow ligament, so that the puncture effect of the arc hook needle 8 is good. When adjusting the angle, first loosen the nut positioning seat 402 to allow the angle adjustment frame 5 and the shaft seat 403 to rotate along the fixed axis 401. After adjusting the angle, tighten the nut positioning seat 402 to clamp and limit the angle adjustment frame 5 and the shaft seat 403.

[0035] It is particularly disclosed that a hand-held part 9 is fixedly connected to the column 101, and the hand-held part 9 is provided with a power supply, a cable and a switch for controlling the first driving mechanism and the second driving mechanism. The hand-held part 9 is conveniently controlled to control the first driving mechanism and the second driving mechanism, thereby controlling the pulling and cutting actions of the yellow ligament.

[0036] The nerve stripper, when used: Step S1: firstly, adjusting the distance between the two sets of total support frames 3, and then adjusting the positions of the lifting adjustment platform 4, the angle adjustment frame 5, the adjustment fixing bracket 6 and the yellow ligament fitting seat 7, so as to adjust the distance between the two sets of yellow ligament fitting seats 7, so that the yellow ligament fitting seat 7 can adapt to the required yellow ligament incision position; Step S2: adjusting the angle between the lifting adjustment platform 4 and the angle adjustment frame 5, and then adjusting the angle between the fixing bracket 6 and the yellow ligament fitting seat 7, to ensure that the yellow ligament fitting seat 7 fits the yellow ligament; Step S3: According to the thickness of the yellow ligament in the pathological image, the angle adjustment frame 5, the fixing frame 6 and the yellow ligament fitting seat 7 are adjusted relative to the height of the total support frame 3, thereby adjusting the cutting depth of the cutting head 2; Step S4: fitting the ligamentum flavum fitting seat 7 to the ligamentum flavum, and using the second driving mechanism to drive the multiple groups of arc-shaped hook needles 8 to move and insert into the patient's ligamentum flavum; Step S5: lifting the device upwards, so that the yellow ligament fitting seat 7 and the arc-shaped hook needle 8 pull the yellow ligament of the patient upwards, thereby separating the yellow ligament from the dura mater sac; Step S6: using the second driving mechanism to drive the cutting head 2 to perform a cutting action, cutting the ligamentum flavum to form a target incision.

[0037] Through the above-mentioned steps and methods, by setting up the yellow ligament separation unit and the yellow ligament cutting unit, the operation is convenient when performing the removal of the yellow ligament. The cutting method will not cause dura mater damage and subsequent dura mater damage, cerebrospinal fluid leakage, and increased iatrogenic injury. Moreover, the nerve stripper is simple to operate, and no other tools are required when making a target incision on the yellow ligament. It can be operated with one hand, reducing the patient's pain and physical injury, and ensuring the stability of the patient's spine after surgery. It is suitable for popularization and use.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A nerve stripper, comprising a cutting base (1), characterized in that: The cutting base (1) is provided with: A ligamentum flavum cutting unit comprises a cutting head (2) slidably connected to the bottom of a cutting base (1) and a first driving mechanism arranged on the cutting base (1), wherein the first driving mechanism is used to drive the cutting head (2) to move and perform a cutting action; Ligamentum flavum separation unit, including: A main support frame (3) slidably connected to both sides of the cutting base (1); A lifting and adjusting platform (4) is arranged on the main supporting frame (3); An angle adjustment frame (5) is arranged at the bottom of the lifting adjustment platform (4); A fixed bracket (6) fixedly connected to the bottom of the angle adjustment bracket (5); A ligamentum flavum fitting seat (7) fixedly connected to the fixing bracket (6); An arc-shaped hook needle (8) is arranged at the bottom of the yellow ligament fitting seat (7); The second driving mechanism is arranged on the ligamentum flavum fitting seat (7) and is used to drive the arc-shaped hook needle (8) to embed into the ligamentum flavum.

2. A nerve stripper according to claim 1, characterized in that: The first driving mechanism comprises: A first sprocket (201) rotatably connected to the inner cavity of the cutting base (1); A second sprocket (202) rotatably connected to the inner cavity of the cutting base (1); A chain (203) is sleeved on the first sprocket (201) and the second sprocket (202) and is used to support the cutting head (2); The first motor (204) is arranged on the cutting base (1), and the output end of the first motor (204) is connected to the second sprocket (202).

3. The nerve stripper according to claim 1, characterized in that: The cutting base (1) is fixedly connected to a column (101), the column (101) is fixedly connected to a first guide rail (102), the main support frame (3) is fixedly connected to a sleeve (103), and the main support frame (3) and the sleeve (103) are slidably connected to the first guide rail (102); A double-threaded screw rod (104) is rotatably connected to the cutting base (1), and the double-threaded screw rod (104) is threadedly connected to the main support frame (3).

4. A nerve stripper according to claim 3, characterized in that: The main support frame (3) is fixedly connected to a second guide rail rod (301), and the lifting and adjusting platform (4) is slidably connected to the second guide rail rod (301); A threaded rod (302) is threadedly connected to the main support frame (3), and the threaded rod (302) is rotatably connected to the lifting and adjusting platform (4).

5. The nerve stripper according to claim 4, characterized in that: A fixed shaft (401) is provided at the bottom of the lifting and adjusting platform (4), and nut positioning seats (402) are threadedly connected on both sides of the fixed shaft (401); The angle adjustment frame (5) is provided with a shaft seat (403), and the shaft seat (403) is rotatably connected to the fixed shaft (401) and movably clamped between the nut positioning seats (402).

6. The nerve stripper according to claim 1, characterized in that: The second driving mechanism comprises: A positioning shaft (801) rotatably connected to the ligamentum flavum fitting seat (7); A rotating wheel (802) is arranged on the positioning shaft (801); A fan-shaped plate (803) is arranged on the rotating wheel (802), and the arc-shaped hook needle (8) is fixedly connected to the fan-shaped plate (803); A second bevel gear (804) is arranged on the positioning shaft (801); A second motor (501) is arranged on the angle adjustment frame (5); The first bevel gear (502) is arranged at the output end of the second motor (501), and the first bevel gear (502) is meshed with the second bevel gear (804).

7. The nerve stripper according to claim 6, characterized in that: A limiting plate (503) is fixedly connected to the output rod of the second motor (501), a positioning lever (505) is fixedly connected to the limiting plate (503), and a vertical blocking rod (504) is provided at the bottom of the fixed bracket (6).

8. The nerve stripper according to claim 6, characterized in that: The ligamentum flavum fitting seat (7) is provided with a plurality of groups of rotation grooves (701) corresponding to the positions of the arc-shaped hook needles (8).

9. The nerve stripper according to claim 3, characterized in that: A hand-held portion (9) is fixedly connected to the upright column (101).

10. The nerve stripper according to claim 9, characterized in that: The handheld portion (9) is provided with a power source, a cable and a switch for controlling the first driving mechanism and the second driving mechanism.

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