Single-channel lumbar vertebra cannula with endoscope channel and lumbar vertebra single-channel working system

Abstract

The invention discloses a single-channel lumbar vertebra cannula with an endoscope channel and a lumbar vertebra single-channel working system. The single-channel lumbar vertebra cannula comprises an integrated cannula body; an instrument channel and an endoscope channel are formed in the inner side of the integrated tube body; the endoscope channel is located on one radial side of the instrument channel and is obliquely arranged relative to the instrument channel, an anti-rotation limiting channel is arranged between the upper portion of the endoscope channel and the upper portion of the instrument channel, and the lower portion of the endoscope channel and the lower portion of the instrument channel intersect together. The integrated channel structure design is adopted, the instrument channel and the endoscope channel are arranged at the same time, the device has the advantages of being simple and light in structure and convenient and fast to use, the occupied space of the instrument channel is small when a soft electronic endoscope is placed in the device, and hindrance to surgical instruments can be effectively avoided or reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a single-channel lumbar cannula with an endoscope channel and a lumbar single-channel working system. Background Art

[0002] With the development of precision medicine, precision and minimally invasive lumbar spine surgery are becoming increasingly popular. Compared with traditional open surgery, minimally invasive lumbar spine surgery utilizes the instrument channel of the lumbar cannula to insert surgical instruments and endoscopes. This allows for smaller incisions, reduces soft tissue retraction and dissection, and thus reduces postoperative pain and shortens recovery time.

[0003] In the single-channel approach, surgical instruments and the observation endoscope are placed in the same channel. If a soft electronic endoscope is used, a corresponding endoscope channel assembly is required to secure the electronic endoscope and its signal cables, and a separate connecting assembly is required to secure the endoscope channel assembly to the lumbar cannula. The channel system consisting of the endoscope channel assembly, lumbar cannula, and connecting assembly is not only complex, heavy, and inconvenient to use, but also bulky. The endoscope channel assembly takes up a lot of space when placed in the instrument channel of the lumbar cannula, easily obstructing the surgical instruments. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of the present invention is to provide a single-channel lumbar cannula with an endoscope channel and a lumbar single-channel working system; compared with the existing split channel structure, the present invention adopts an integrated channel structure design, which has both an instrument channel and an endoscope channel, and has the advantages of simple structure, light weight, and easy use. When a soft electronic endoscope is placed in it, the space occupied by the instrument channel is very small, which can effectively avoid or reduce obstruction to surgical instruments.

[0005] The single-channel lumbar cannula with an endoscope channel of the present invention is implemented by the following technical solutions: A single-channel lumbar cannula with an endoscope channel comprises an integrated tube body; An instrument channel and an endoscope channel are formed on the inner side of the integrated tube body; The endoscope channel is located on the radial side of the instrument channel and is inclined relative to the instrument channel. The upper part of the endoscope channel and the upper part of the instrument channel are separated by an anti-rotation limit channel, and the lower part of the endoscope channel and the lower part of the instrument channel intersect together.

[0006] Furthermore, a wire-holding hole is provided at the top end of the integrated tube body, and the wire-holding hole is located on the side of the endoscope channel facing away from the instrument channel, and a notch is provided at the top end of the wire-holding hole.

[0007] Furthermore, the inner tube wall of the one-piece tube body includes a first channel inner wall, a second channel inner wall and a third channel inner wall. The first channel inner wall forms the instrument channel, the second channel inner wall is recessed relative to the first channel inner wall to form the endoscope channel, and the third channel inner wall is provided with two sides and is arranged opposite to each other, and the anti-rotation limit channel is formed between the two third channel inner walls.

[0008] Furthermore, the inner wall of the second channel is in an arcuate structure, and the upper portion of the inner wall of the second channel is connected to the two inner walls of the third channel at two ends corresponding to the arcuate opening.

[0009] Furthermore, one side of the outer tube wall of the integrated tube body is raised to form the channel outer wall of the endoscope channel, and the degree of the raised channel outer wall gradually decreases from the top end to the bottom end of the integrated tube body.

[0010] Furthermore, the one-piece tube body is provided with a liquid channel, which is located between the inner tube wall and the outer tube wall of the one-piece tube body. The outer tube wall of the one-piece tube body is provided with an upper inlet and outlet of the liquid channel, and the inner tube wall of the one-piece tube body is provided with a lower inlet and outlet of the liquid channel, and the position of the upper inlet and outlet is higher than the lower inlet and outlet. There are two groups of liquid channels, upper inlet and outlet, and lower inlet and outlet, and they are respectively located on both sides of the endoscope channel.

[0011] Furthermore, the single-channel lumbar cannula with an endoscope channel further includes a sealing joint; The upper inlet and outlet are equipped with the sealing joint.

[0012] Furthermore, a limit ring is provided at the top of the integrated tube body, and a funnel slope is provided on the upper side of the limit ring. The bottom end of the funnel slope extends to the top of the instrument channel, and the top of the endoscope channel and the top of the anti-rotation limit channel pass through the funnel slope.

[0013] The lumbar vertebrae single-channel working system of the present invention is implemented by the following technical solutions: A lumbar vertebrae single-channel working system comprises a soft electronic endoscope and the above-mentioned single-channel lumbar vertebrae cannula with an endoscope channel.

[0014] Furthermore, the soft electronic endoscope includes a soft signal line and an electronic mirror protective shell located at the front end of the soft signal line. The electronic mirror protective shell is circular, and one side of the outer surface of the electronic mirror protective shell is raised to form an anti-rotation limit pin, and the width of the anti-rotation limit pin is adapted to the width of the anti-rotation limit channel.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The single-channel lumbar cannula with an endoscope channel and the lumbar single-channel working system provided by the present invention include an integrated tube body, the inner side of which is formed with both an instrument channel and an endoscope channel, that is, an integrated channel structure design is adopted, which is simpler and lighter than the traditional split channel; the endoscope channel is located on the radial side of the instrument channel and is inclined relative to the instrument channel. This design helps to place the soft electronic endoscope in the direction of the instrument channel, and the endoscope will not occupy space above the instrument channel, thereby avoiding obstruction. Insertion of surgical instruments; an anti-rotation limit channel is provided between the upper part of the endoscope channel and the upper part of the instrument channel, through which the anti-rotation limit pin of the soft electronic endoscope can be slidably matched, which neither hinders the insertion of the soft electronic endoscope nor prevents its rotation, thereby ensuring that the observation direction is fixed; the lower part of the endoscope channel intersects with the lower part of the instrument channel, which helps to insert the front end of the soft electronic endoscope into the instrument channel, thus ensuring better observation of the patient's surgical site and taking up very little space in the instrument channel; From the above, it can be seen that the single-channel lumbar cannula with an endoscope channel and the lumbar single-channel working system provided by the present invention adopt an integrated channel structure design, and have both an instrument channel and an endoscope channel. It has the advantages of simple structure, light weight, and easy use. When a soft electronic endoscope is placed in it, the space occupied by the instrument channel is very small, which can effectively avoid or reduce obstruction to surgical instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a lumbar vertebrae single-channel working system according to a first embodiment of the present invention; Figure 2 This is a structural schematic diagram of the lumbar vertebrae single-channel working system in the assembly process according to the first embodiment of the present invention; Figure 3 This is a schematic structural diagram of the lumbar vertebrae single-channel working system of Example 1 of the present invention when assembled; Figure 4 This is a schematic structural diagram of a single-channel lumbar cannula with an endoscope channel according to a first embodiment of the present invention; Figure 5 for Figure 4 a top view of the structure shown; Figure 6 for Figure 4 a longitudinal cross-section of the structure shown; Figure 7 for Figure 4 a diagram of the internal structure of the structure shown; Figure 8 Schematic diagram of the structure of the flexible electronic endoscope according to the first and second embodiments of the present invention; Figure 9 for Figure 8A schematic structural diagram of the soft signal line of the soft electronic endoscope shown; Figure 10 This is a schematic structural diagram of a lumbar vertebrae single-channel working system according to a second embodiment of the present invention; Figure 11 This is a schematic diagram of the bottom structure of the lumbar vertebrae single-channel working system according to the second embodiment of the present invention; Figure 12 This is a structural diagram of a single-channel lumbar cannula with an endoscope channel according to a second embodiment of the present invention (without a sealing joint); Figure 13 This is a cross-sectional view of a single-channel lumbar cannula with an endoscope channel according to embodiment 2 of the present invention (with a sealing joint).

[0017] In the picture: 100. Integrated tube body; 101. Limiting ring; 102. Inner wall of first channel; 103. Inner wall of second channel; 104. Inner wall of third channel; 105. Outer wall of channel; 106. Slant surface of funnel; 200, instrument channel; 300, endoscope channel; 400, anti-rotation limiting channel; 401, first boundary; 402, second boundary; 500, cable hole; 600, liquid channel; 601, upper inlet and outlet; 602, lower inlet and outlet; 700, flexible electronic endoscope; 701, electronic endoscope protective shell; 702, anti-rotation limit pin; 703, soft signal line; 7031, signal line outer tube; 7032, wire; 7033, plastic line; 800. Sealed joint. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] refer to Figures 1-9 , embodiment 1 of the present invention is as follows.

[0020] The first embodiment of the present invention provides a single-channel lumbar cannula with an endoscope channel. The single-channel lumbar cannula with an endoscope channel of the first embodiment of the present invention includes an integrated tube body 100.

[0021] An instrument channel 200 and an endoscope channel 300 are formed on the inner side of the integrated tube body 100. The integrated channel structure design is simpler and lighter than the traditional split channel.

[0022] The endoscope channel 300 is located radially to one side of the instrument channel 200 and is inclined relative to the instrument channel 200. This arrangement facilitates insertion of the flexible electronic endoscope toward the instrument channel 200, and prevents the flexible electronic endoscope from occupying space above the instrument channel 200, thereby preventing it from obstructing the insertion of surgical instruments.

[0023] An anti-rotation limiter channel 400 separates the upper portion of the endoscope channel 300 from the upper portion of the instrument channel 200, and the lower portion of the endoscope channel 300 intersects with the lower portion of the instrument channel 200. This arrangement allows the anti-rotation limiter channel 400 to slidably engage the anti-rotation limiter pin of the soft electronic endoscope, ensuring that the soft electronic endoscope is inserted without interfering with its rotation and maintaining a fixed viewing direction.

[0024] The lower portion of the endoscope channel 300 intersects with the lower portion of the instrument channel 200. This arrangement allows the flexible electronic endoscope to be placed at a certain angle (relative to the instrument channel 200), so that the flexible electronic endoscope's lighting or imaging field of view can better align with or cover the surgical site, improving the lighting or field of view, while occupying very little space in the instrument channel 200.

[0025] In the first embodiment of the present invention, a wire-holding hole 500 is provided at the top of the integrated tube body 100. Specifically, the position of the wire-holding hole 500 corresponds to the top of the endoscope channel 300, or the position of the wire-holding hole 500 is higher than the top of the endoscope channel 300. The wire-holding hole 500 is located on the side of the endoscope channel 300 facing away from the instrument channel 200, and a notch is provided at the top of the wire-holding hole 500. The notch is used to allow the soft signal cable of the endoscope to be inserted into the wire-holding hole 500, thereby securing the soft signal cable. That is, the wire-holding hole 500 limits the position of the soft signal cable in the radial direction (or the outer circumference of the soft signal cable). Preferably, the width of the notch can be smaller than the diameter of the soft signal cable. In this way, when no external force is applied, the notch actually serves to limit the soft signal cable inserted into the wire-holding hole 500.

[0026] There are two main purposes for setting the wire clamping hole 500: one is to prevent the soft signal line from moving to the top of the instrument channel 200 due to accidental movement or pulling, so as to avoid the soft signal line from interfering with the surgical instrument; the other is to use the shaping ability of the soft signal line to control the installation depth of the endoscope. The shaping ability means that the soft signal line can be bent by external force, and the shape formed by the bending can be fixed, so it can play the role of shaping (fixing shape) and positioning (fixing position). The soft signal line is bent at an appropriate position and the signal line is buckled into the wire clamping hole 500. At this time, without applying external force, the soft electronic endoscope will not move up and down (nor rotate) in the endoscope channel 300, which means that the soft electronic endoscope is fixed.

[0027] In the prior art, working cannulas are often used with rigid endoscopes because they cannot properly secure flexible endoscopes. However, rigid endoscopes are bulky, heavy, and inconvenient to use. The lumbar cannula of the present invention can effectively secure flexible electronic endoscopes, thereby fully utilizing the advantages of flexible electronic endoscopes, such as compactness, flexibility, and ease of use.

[0028] In embodiment 1 of the present invention, a limit ring 101 is provided at the top of the integrated tube body 100, and a funnel slope 106 is provided on the upper side of the limit ring 101. The bottom end of the funnel slope 106 extends to the top of the instrument channel 200, and the top of the endoscope channel 300 and the top of the anti-rotation limit channel 400 pass through the funnel slope 106.

[0029] In the first embodiment of the present invention, the inner tube wall of the integrated tube body 100 includes a first channel inner wall 102, a second channel inner wall 103, and a third channel inner wall 104. The first channel inner wall 102 forms the instrument channel 200. The second channel inner wall 103 is recessed relative to the first channel inner wall 102 to form the endoscope channel 300. The third channel inner wall 104 has two opposing sides, and the anti-rotation limit channel 400 is formed between the two third channel inner walls 104. Forming the instrument channel 200, the endoscope channel 300, and the anti-rotation limit channel 400 entirely from the inner tube wall of the integrated tube body 100 helps to simplify the structural design of the integrated tube body 100.

[0030] In the first embodiment of the present invention, the second channel inner wall 103 has a curved surface structure, and the upper portion of the second channel inner wall 103 is connected to the two third channel inner walls 104 at both ends corresponding to the curved surface openings. The curved surface structure of the second channel inner wall 103 means that the second channel inner wall 103 can adapt to the circular surface of the electronic mirror protective housing 701, but does not mean that the curvature of the second channel inner wall 103 is fixed. In embodiment 1 of the present invention, the second channel inner wall 103 includes an upper first curved surface portion 103a and a lower second curved surface portion 103b. The first curved surface portion 103a is connected to the two third channel inner walls 104 at both ends corresponding to the curved surface opening, and the second curved surface portion 103b is connected to the first channel inner wall 102. The curvature of the second curved surface portion 103b from its top end to its bottom end is gradual (gradually becoming smaller). The reason for the gradual curvature is that the degree of concavity of the second curved surface portion 103b is gradually becoming smaller, or in other words, at the position of the second curved surface portion 103b, the endoscope channel 300 is gradually becoming shallower.

[0031] In the first embodiment of the present invention, a first boundary 401 is formed at the junction of the third channel inner wall 104 and the first channel inner wall 102, and a second boundary 402 is formed at the junction of the third channel inner wall 104 and the second channel inner wall 103. The first boundary 401 is parallel to the axial direction of the instrument channel 200, and the second boundary 402 is parallel to the axial direction of the endoscope channel 300. The bottom end of the first boundary 401 and the bottom end of the second boundary 402 intersect. The intersection of the first boundary 401 and the second boundary 402 is the lowest point of the anti-rotation limit channel 400.

[0032] In the first embodiment of the present invention, one side of the outer tube wall of the integrated tube body 100 is raised to form the channel outer wall 105 of the endoscope channel 300 , and the degree of protrusion of the channel outer wall 105 gradually decreases from the top end to the bottom end of the integrated tube body 100 . If the one-piece tube body 100 has a larger wall thickness as a whole, it can still form the instrument channel 200, the endoscope channel 300 and the anti-rotation limit channel 400 on the inside, but it will cause the weight and volume to be not light enough; therefore, the one-piece tube body 100 is raised on one side of the outer tube wall to form a channel outer wall 105, which can provide a channel space for the endoscope channel 300, and the second channel inner wall 103 (that is, the inner wall of the endoscope channel 300) is relatively concave, so that the one-piece tube body 100 can maintain a smaller wall thickness as a whole, and the degree of protrusion of the channel outer wall 105 is gradually reduced, which helps to further reduce the weight and volume, and minimize the size of the bottom end of the one-piece tube body 100 as much as possible to avoid hindering the placement and use of the one-piece tube body 100.

[0033] The first embodiment of the present invention further provides a lumbar single-channel working system, which includes a soft electronic endoscope 700 and a single-channel lumbar cannula with an endoscope channel as described in the first embodiment of the present invention.

[0034] The flexible electronic endoscope 700 includes a flexible signal line 703 and an electronic mirror protective shell 701 located at the front end of the flexible signal line 703. The electronic camera of the flexible electronic endoscope 700 is mounted at the front end of the inner side of the electronic mirror protective shell 701, which provides protection for the electronic camera. The flexible signal line 703 is used to transmit electrical signals and image signals. The electronic mirror protective shell 701 is circular, and a protrusion on one side of the outer surface of the electronic mirror protective shell 701 forms an anti-rotation limit pin 702. The width of the anti-rotation limit pin 702 is adapted to the width of the anti-rotation limit channel 400. Here, it can be understood that the width of the anti-rotation limit pin 702 is equal to or slightly smaller than the width of the anti-rotation limit channel 400, so that the anti-rotation limit pin 702 can slide along the anti-rotation limit channel 400, which can prevent rotation without affecting the installation and use of the endoscope.

[0035] The soft signal line 703 has the ability to be shaped. Specifically, the soft signal line 703 includes a signal line outer tube 7031 and a conductor 7032 and a plastic wire 7033 arranged inside the signal line outer tube 7031. The conductor 7032 should include an insulating layer and a conductor (such as a copper wire) wrapped inside the insulating layer. The plastic wire 7033 can be a steel wire or an aluminum wire. There can be multiple conductors 7032, with the plastic wire 7033 arranged in the middle, and these conductors 7032 are arranged around the periphery of the plastic wire 7033. The shaping ability provided by plastic wires such as steel wire or aluminum wire allows the soft signal line 703 to be bent 360 degrees to be shaped. That is, the soft signal line 703 can be bent by external force, and the shape formed by the bending can be fixed, so it can play the role of shaping (fixing shape) and positioning (fixing position).

[0036] The working principle of the first embodiment of the present invention is as follows: The electronic mirror protective shell 701 of the soft electronic endoscope 700 is placed into the endoscope channel 300, wherein the anti-rotation limit pin 702 on the electronic mirror protective shell 701 enters the anti-rotation limit channel 400, and the electronic mirror protective shell 701 slides downward along the endoscope channel 300, and the anti-rotation limit pin 702 slides downward along the anti-rotation limit channel 400. The anti-rotation limit channel 400 can limit the rotation of the electronic mirror protective shell 701, which neither hinders the placement of the soft electronic endoscope nor prevents its rotation, thereby ensuring that the observation direction is fixed; after the soft electronic endoscope 700 is placed to the appropriate depth, the soft signal line 703 is buckled into the line clamping hole 500 to fix the soft signal line 703, thereby completing the fixation of the soft electronic endoscope 700.

[0037] refer to Figure 10-13 , Embodiment 2 of the present invention is as follows.

[0038] The second embodiment of the present invention provides a single-channel lumbar cannula with an endoscope channel. The second embodiment of the present invention also provides a single-channel lumbar working system, which includes a soft electronic endoscope 700 and the single-channel lumbar cannula with an endoscope channel as described in the second embodiment of the present invention.

[0039] The main difference between Example 2 of the present invention and Example 1 is that: the one-piece tube body 100 is provided with a liquid channel 600, and the liquid channel 600 is located between the inner tube wall and the outer tube wall of the one-piece tube body 100; the outer tube wall of the one-piece tube body 100 is provided with an upper inlet and outlet 601 of the liquid channel 600; the inner tube wall of the one-piece tube body 100 is provided with a lower inlet and outlet 602 of the liquid channel 600; and the position of the upper inlet and outlet 601 is higher than the lower inlet and outlet 602; the liquid channel 600, the upper inlet and outlet 601 and the lower inlet and outlet 602 are provided in two groups and are respectively located on both sides of the endoscope channel 300; in addition, the single-channel lumbar cannula with an endoscope channel of Example 2 of the present invention also includes a sealing joint 800, and the upper inlet and outlet 601 is equipped with the sealing joint 800.

[0040] For other structures of the second embodiment of the present invention, reference may be made to the first embodiment.

[0041] The working principle of the second embodiment of the present invention is as follows: ① Place the electronic mirror protective shell 701 of the soft electronic endoscope 700 into the endoscope channel 300, wherein the anti-rotation limit pin 702 on the electronic mirror protective shell 701 enters the anti-rotation limit channel 400, and the electronic mirror protective shell 701 slides downward along the endoscope channel 300, and the anti-rotation limit pin 702 slides downward along the anti-rotation limit channel 400. The anti-rotation limit channel 400 can limit the rotation of the electronic mirror protective shell 701, which neither hinders the placement of the soft electronic endoscope nor prevents its rotation, thereby ensuring that the observation direction is fixed; after the soft electronic endoscope 700 is placed to the appropriate depth, the soft signal line 703 is buckled into the line clamping hole 500 to fix the soft signal line 703, thereby completing the fixation of the soft electronic endoscope 700.

[0042] ② During the operation, new physiological saline can be input into the instrument channel 200 through one of the sealing joints 800, and the unclear sewage with blood in the instrument channel 200 can be drawn out through the other sealing joint 800, thus forming an in-and-out water flow for changing water, which can make the water environment in which the endoscope is located clear, that is, it realizes the cleaning of the working environment and ensures a clear field of vision; in addition, the lower inlet and outlet 602 is set on the inner tube wall of the integrated tube body 100, which can prevent it from being blocked by muscle tissue and ensure the smooth flow of the water flow for changing water.

[0043] From the above two embodiments, it can be seen that the single-channel lumbar cannula with an endoscope channel and the lumbar single-channel working system provided by the present invention adopt an integrated channel structure design, and have both an instrument channel and an endoscope channel. It has the advantages of simple structure, light weight, and easy use. When a soft electronic endoscope is placed in it, the space occupied by the instrument channel is very small, which can effectively avoid or reduce obstruction to surgical instruments.

[0044] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A single-channel lumbar cannula with an endoscope channel, characterized in that: Includes one-piece tube body; An instrument channel and an endoscope channel are formed on the inner side of the integrated tube body; The endoscope channel is located on the radial side of the instrument channel and is inclined relative to the instrument channel. The upper part of the endoscope channel and the upper part of the instrument channel are separated by an anti-rotation limit channel, and the lower part of the endoscope channel and the lower part of the instrument channel intersect together.

2. The single-channel lumbar cannula with an endoscope channel according to claim 1, characterized in that: A wire clamping hole is provided at the top end of the integrated tube body. The wire clamping hole is located on the side of the endoscope channel facing away from the instrument channel. A notch is provided at the top end of the wire clamping hole.

3. The single-channel lumbar cannula with an endoscope channel according to claim 1, characterized in that: The inner tube wall of the one-piece tube body includes a first channel inner wall, a second channel inner wall and a third channel inner wall. The first channel inner wall forms the instrument channel, the second channel inner wall is recessed relative to the first channel inner wall to form the endoscope channel, and the third channel inner wall is provided with two sides that are arranged opposite to each other, and the anti-rotation limit channel is formed between the two third channel inner walls.

4. The single-channel lumbar cannula with an endoscope channel according to claim 3, characterized in that: The inner wall of the second channel is in an arcuate structure, and the upper portion of the inner wall of the second channel is connected to the two inner walls of the third channel at two ends corresponding to the arcuate opening.

5. The single-channel lumbar cannula with an endoscope channel according to claim 1, characterized in that: One side of the outer tube wall of the integrated tube body is raised to form the channel outer wall of the endoscope channel, and the degree of the raised channel outer wall gradually decreases from the top end to the bottom end of the integrated tube body.

6. The single-channel lumbar cannula with an endoscope channel according to claim 1, characterized in that: The one-piece tube body is provided with a liquid channel, which is located between the inner tube wall and the outer tube wall of the one-piece tube body. The outer tube wall of the one-piece tube body is provided with an upper inlet and outlet of the liquid channel, and the inner tube wall of the one-piece tube body is provided with a lower inlet and outlet of the liquid channel, and the position of the upper inlet and outlet is higher than the lower inlet and outlet. There are two groups of liquid channels, upper inlets and outlets, and lower inlets and outlets, and they are respectively located on both sides of the endoscope channel.

7. The single-channel lumbar cannula with an endoscope channel according to claim 6, characterized in that: The single-channel lumbar cannula with an endoscope channel further includes a sealing joint; The upper inlet and outlet are equipped with the sealing joint.

8. The single-channel lumbar cannula with an endoscope channel according to claim 1, characterized in that: A limiting ring is provided at the top of the integrated tube body, and a funnel slope is provided on the upper side of the limiting ring. The bottom end of the funnel slope extends to the top of the instrument channel, and the top of the endoscope channel and the top of the anti-rotation limiting channel pass through the funnel slope.

9. A lumbar vertebrae single-channel working system, characterized in that: The invention comprises a soft electronic endoscope and a single-channel lumbar cannula with an endoscope channel as described in any one of claims 1 to 8.

10. The lumbar vertebrae single-channel working system according to claim 9, characterized in that: The soft electronic endoscope includes a soft signal line and an electronic mirror protective shell located at the front end of the soft signal line. The electronic mirror protective shell is circular, and a protrusion on one side of the outer surface of the electronic mirror protective shell forms an anti-rotation limit pin, and the width of the anti-rotation limit pin is adapted to the width of the anti-rotation limit channel.

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