Intraoperative intradermal positioning device for minimally invasive lumbar surgery

Abstract

The invention belongs to the technical field of medical instruments, and discloses a lumbar vertebra minimally invasive surgery intradermal positioning device which comprises a tray, a mounting frame is movably connected to the right end of the tray, a kirschner wire injector is movably connected into the mounting frame in a sleeved mode, and an auxiliary rod is fixedly installed on the left side of the outer surface of the kirschner wire injector. By arranging the circular shaft, the disc, the inclined rod, the rectangular block and the first threaded rod, when the first handle is rotated, the first threaded rod rotates, and due to the fact that the outer surface of the first threaded rod and the inner surface of the rectangular block are connected in a threaded and sleeving mode, the first handle rotates along with rotation of the first threaded rod; the rectangular block can drive the inclined rod to move along the inner surface of the fixing frame, so that the other end of the inclined rod generates pulling force on the disc, the disc is pulled to drive the kirschner wire injector to rotate with the circular shaft as the axis through the circular shaft, and multi-angle adjustment of the puncture position can be facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and particularly relates to an intradermal positioning device during minimally invasive lumbar spine surgery. Background Art

[0002] Minimally invasive lumbar spine surgery is a modern high-tech surgical method for treating lumbar spine diseases, which has the advantages of small trauma, less pain, good effect, etc. It is mainly used for treating lumbar disc herniation, especially in the case of lumbar disc compressing the dural sac and nerve roots. The surgical process generally includes: anesthesia; positioning and incision; establishing a working channel; surgical operation and wound treatment.

[0003] During the process of minimally invasive lumbar spine surgery, it is necessary to position the lumbar puncture site to ensure the smooth progress of the surgery, minimize the surgical wound, and reduce the harm to the patient to the greatest extent. However, in the existing technology, the intradermal positioning device is time-consuming and laborious during puncture positioning, and it is not convenient for multi-angle adjustment, which easily causes inaccurate puncture positions by the operator. Even the operator needs to perform puncture operations repeatedly, which is likely to increase the surgical risk and cause additional harm to the patient. Therefore, it is necessary to improve this situation. Summary of the Invention

[0004] The purpose of the invention is to provide an intradermal positioning device during minimally invasive lumbar spine surgery to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the invention provides the following technical solution: An intradermal positioning device during minimally invasive lumbar spine surgery, including a tray. The right end of the tray is movably connected with an installation frame. The inside of the installation frame is movably sleeved with a Kirschner wire syringe. The left side of the outer surface of the Kirschner wire syringe is fixedly installed with an auxiliary rod. The outer surface of the auxiliary rod is movably sleeved with the inner surface of the left end of the installation frame. The right side of the outer surface of the Kirschner wire syringe is fixedly installed with a round shaft. The right end of the round shaft penetrates through the installation frame and extends to the outside of the installation frame and is fixedly sleeved with a disc. The outer surface of the disc is movably connected with the outer surface of the installation frame. The left side of the middle part of the front end of the disc is hinged with an inclined rod. The other end of the inclined rod is hinged with a rectangular block. The rear end of the rectangular block is movably connected with the front end of the installation frame. The inside of the rear end of the rectangular block is movably sleeved with a fixing frame. The rear end of the fixing frame is fixedly connected with the front end of the installation frame. The inside of the fixing frame is movably sleeved with a first threaded rod. The outer surface of the first threaded rod is threadedly sleeved with the inner surface of the rectangular block. The top of the outer surface of the first threaded rod is fixedly sleeved with a first handle. The outer surface of the first handle is movably connected with the outer surface of the fixing frame.

[0006] Preferably, at the top of the left end of the mounting frame, a rotating rod is fixedly installed. The bottom end of the rotating rod is movably connected to the top end of the tray. Inside the left end of the rotating rod, a cylinder is fixedly sleeved. The bottom end of the cylinder is fixedly connected to the middle of the top end of the tray. At the top end of the cylinder, a gear is fixedly installed. Inside the gear, a vertical rod is movably sleeved.

[0007] Preferably, inside the bottom end of the vertical rod, a limiting rod is fixedly sleeved. On the left and right sides of the outer surface of the limiting rod, clamping blocks are respectively movably sleeved. The number of the clamping blocks is two. The bottom of the opposite surfaces of the two clamping blocks is movably connected to the left and right sides of the outer surface of the gear.

[0008] Preferably, at the top of the two clamping blocks, connecting rods are respectively hinged. The other end of the connecting rod is hinged to a movable block. The outer surface of the movable block is movably sleeved with the inner surface of the vertical rod. Inside the movable block, a second threaded rod is threadedly sleeved. The top end of the second threaded rod penetrates through the vertical rod and extends to the outside of the vertical rod and is fixedly sleeved with a second handle. The bottom end of the second handle is movably connected to the top end of the vertical rod.

[0009] Preferably, at the top of the left end of the vertical rod, a cross bar is movably connected. On the left side of the outer surface of the cross bar, a vertical column is movably sleeved.

[0010] Preferably, inside the cross bar, an extension rod is movably sleeved. The right end of the extension rod penetrates through the cross bar and extends to the outside of the cross bar and is fixedly connected to the left end of the vertical rod. On the left side of the top end of the cross bar, a first motor is fixedly installed. The other end of the output shaft of the first motor is fixedly sleeved with a first lead screw. The left side of the outer surface of the first lead screw is threadedly sleeved with the inner surface of the extension rod.

[0011] Preferably, at the top end of the vertical column, a second motor is fixedly installed. The other end of the output shaft of the second motor is fixedly sleeved with a second lead screw. The bottom end of the second lead screw penetrates through the vertical column and extends to the inside of the vertical column. The top of the outer surface of the second lead screw is threadedly sleeved with the inner surface of the left end of the cross bar.

[0012] Preferably, inside the bottom end of the vertical column, an extension column is movably sleeved. At the bottom end of the extension column, a mounting plate is fixedly installed. The top end of the mounting plate is movably connected to the bottom end of the vertical column. On the left end of the extension column, a round hole is opened.

[0013] Preferably, on the left side inside the round hole, a round rod located at the bottom left end of the vertical column is movably sleeved. The left end of the round rod penetrates through the vertical column and extends to the outside of the vertical column and is fixedly sleeved with a round plate. On the right end of the round plate, a spring is fixedly installed. The other end of the spring is fixedly installed on the left end of the vertical column.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention is provided with a circular shaft, a disc, an inclined rod, a rectangular block and a first threaded rod. When the first handle is rotated, the first threaded rod will rotate. Since the outer surface of the first threaded rod is threadedly sleeved with the inner surface of the rectangular block, as the first threaded rod rotates, the rectangular block will drive the inclined rod to move along the inner surface of the fixed frame, so that the other end of the inclined rod generates a pulling force on the disc, pulling the disc to drive the Kirschner wire syringe to rotate around the circular shaft as the axis, thereby facilitating multi-angle adjustment of the puncture position.

[0016] 2. The present invention is provided with a gear, a clamping block, a connecting rod, a movable block and a second threaded rod. When the second handle is rotated, the second threaded rod will rotate, so that the movable block threadedly sleeved on the outer surface of the second threaded rod drives the connecting rod to move along the inner surface of the vertical rod, and then the other end of the connecting rod generates a pushing force on the clamping block, pushing the clamping block to move along the outer surface of the limiting rod and separating from the gear. At this time, when the gear is rotated, the gear can drive the mounting frame and the Kirschner wire syringe to rotate through the cylinder and the rotating rod, thereby realizing the adjustment of the puncture direction.

[0017] 3. The present invention is provided with an extension column, a round hole, a round rod, a round plate and a spring. When the round plate is pulled, the round plate will drive the round rod to move along the inner surface of the round hole and stretch the spring, so that the round rod is separated from the round hole. At this time, when the column is pushed, the column can move along the outer surface of the extension column. Under the restoring action of the spring, when the pushing stops, the round rod will return to its original position and be embedded in the corresponding other round hole, thereby realizing the adjustment of the height of the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic cross-sectional structural diagram of the present invention in the front view;

[0020] Figure 3 is a schematic cross-sectional structural diagram of the circular shaft of the present invention;

[0021] Figure 4 is a schematic cross-sectional structural diagram of the mounting frame of the present invention;

[0022] Figure 5 is Figure 1 a partial enlarged structural diagram at A in

[0023] Figure 6 is Figure 1 a partial enlarged structural diagram at B in

[0024] Figure 7 isFigure 2 Schematic diagram of the partial enlarged structure at position C in

[0025] Figure 8 is Figure 2 Schematic diagram of the partial enlarged structure at position D in

[0026] Figure 9 is Figure 2 Schematic diagram of the partial enlarged structure at position E in

[0027] Figure 10 is Figure 2 Schematic diagram of the partial enlarged structure at position F in

[0028] Figure 11 is Figure 4 Schematic diagram of the partial enlarged structure at position G in

[0029] In the figure: 1, tray; 2, mounting frame; 3, Kirschner wire syringe; 4, auxiliary rod; 5, round shaft; 6, disc; 7, inclined rod; 8, rectangular block; 9, fixing frame; 10, first threaded rod; 11, first handle; 12, rotating rod; 13, cylinder; 14, gear; 15, vertical rod; 16, limiting rod; 17, clamping block; 18, connecting rod; 19, movable block; 20, second threaded rod; 21, second handle; 22, cross bar; 23, column; 24, extension rod; 25, first motor; 26, first lead screw; 27, second motor; 28, second lead screw; 29, extension column; 30, mounting plate; 31, round hole; 32, round rod; 33, round plate; 34, spring. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0031] Such as Figures 1 to 11As shown in the figure, the embodiment of the present invention provides an intradermal positioning device during lumbar minimally invasive surgery, including a tray 1. The right end of the tray 1 is movably connected with an installation frame 2. A Kirschner wire syringe 3 is movably sleeved inside the installation frame 2. A auxiliary rod 4 is fixedly installed on the left side of the outer surface of the Kirschner wire syringe 3. The outer surface of the auxiliary rod 4 is movably sleeved with the inner surface of the left end of the installation frame 2. A round shaft 5 is fixedly installed on the right side of the outer surface of the Kirschner wire syringe 3. The right end of the round shaft 5 penetrates through the installation frame 2 and extends to the outside of the installation frame 2 and is fixedly sleeved with a disc 6. The outer surface of the disc 6 is movably connected with the outer surface of the installation frame 2. The left side of the middle part of the front end of the disc 6 is hinged with an inclined rod 7. The other end of the inclined rod 7 is hinged with a rectangular block 8. The rear end of the rectangular block 8 is movably connected with the front end of the installation frame 2. A fixing frame 9 is movably sleeved inside the rear end of the rectangular block 8. The rear end of the fixing frame 9 is fixedly connected with the front end of the installation frame 2. A first threaded rod 10 is movably sleeved inside the fixing frame 9. The outer surface of the first threaded rod 10 is threadedly sleeved with the inner surface of the rectangular block 8. A first handle 11 is fixedly sleeved on the top of the outer surface of the first threaded rod 10. The outer surface of the first handle 11 is movably connected with the outer surface of the fixing frame 9.

[0032] When the first handle 11 is rotated, the first threaded rod 10 will rotate. Since the first threaded rod 10 is threadedly sleeved with the rectangular block 8, under the action of the first threaded rod 10, the rectangular block 8 will drive one end of the inclined rod 7 to move along the inner surface of the fixing frame 9, so that the other end of the inclined rod 7 will generate a pulling force on the disc 6, pulling the disc 6 to rotate around the round shaft 5. At this time, the Kirschner wire syringe 3 fixedly connected with the round shaft 5 will rotate along with the inner surface of the installation frame 2, so as to facilitate multi-angle adjustment of the puncture position.

[0033] Among them, a rotating rod 12 is fixedly installed on the top of the left end of the installation frame 2. The bottom end of the rotating rod 12 is movably connected with the top end of the tray 1. A cylinder 13 is fixedly sleeved inside the left end of the rotating rod 12. The bottom end of the cylinder 13 is fixedly connected with the middle part of the top end of the tray 1. A gear 14 is fixedly installed on the top end of the cylinder 13. A vertical rod 15 is movably sleeved inside the gear 14.

[0034] When the gear 14 rotates, the gear 14 will drive the tray 1, the installation frame 2 and the Kirschner wire syringe 3 to rotate together through the cylinder 13 and the rotating rod 12.

[0035] Among them, a limiting rod 16 is fixedly sleeved inside the bottom end of the vertical rod 15. Clamping blocks 17 are movably sleeved on the left and right sides of the outer surface of the limiting rod 16 respectively. The number of the clamping blocks 17 is two. The bottoms of the opposite surfaces of the two clamping blocks 17 are movably connected with the left and right sides of the outer surface of the gear 14.

[0036] Due to the existence of the clamping block 17, the rotation position of the gear 14 will be locked, and the existence of the limiting rod 16 can limit the movement of the clamping block 17.

[0037] Wherein, connecting rods 18 are respectively hinged to the tops of the two clamping blocks 17, the other ends of the connecting rods 18 are hinged to a movable block 19, the outer surface of the movable block 19 is movably sleeved with the inner surface of the vertical rod 15, and a second threaded rod 20 is threadedly sleeved inside the movable block 19. The top end of the second threaded rod 20 penetrates through the vertical rod 15 and extends to the outside of the vertical rod 15 and is fixedly sleeved with a second handle 21, and the bottom end of the second handle 21 is movably connected to the top end of the vertical rod 15.

[0038] When the second handle 21 is rotated, the second threaded rod 20 will rotate, so that the movable block 19 threadedly sleeved with the second threaded rod 20 drives the connecting rod 18 to move along the inner surface of the vertical rod 15, and then a thrust is generated on the clamping block 17 at the other end of the connecting rod 18, pushing the clamping block 17 to move along the outer surface of the limiting rod 16 to release the lock on the gear 14.

[0039] Wherein, the top of the left end of the vertical rod 15 is movably connected to a cross bar 22, and the left side of the outer surface of the cross bar 22 is movably sleeved with a column 23.

[0040] Due to the existence of the cross bar 22 and the column 23, a supporting effect will be achieved.

[0041] Wherein, an extension rod 24 is movably sleeved inside the cross bar 22. The right end of the extension rod 24 penetrates through the cross bar 22 and extends to the outside of the cross bar 22 and is fixedly connected to the left end of the vertical rod 15. A first motor 25 is fixedly installed on the left side of the top of the cross bar 22. The other end of the output shaft of the first motor 25 is fixedly sleeved with a first lead screw 26, and the left side of the outer surface of the first lead screw 26 is threadedly sleeved with the inner surface of the extension rod 24.

[0042] When the first motor 25 is started, the first lead screw 26 will rotate, so that the extension rod 24 threadedly sleeved with the first lead screw 26 drives the vertical rod 15 to move along the inner surface of the cross bar 22.

[0043] Wherein, a second motor 27 is fixedly installed on the top of the column 23. The other end of the output shaft of the second motor 27 is fixedly sleeved with a second lead screw 28. The bottom end of the second lead screw 28 penetrates through the column 23 and extends to the inside of the column 23, and the top of the outer surface of the second lead screw 28 is threadedly sleeved with the inner surface of the left end of the cross bar 22.

[0044] When the second motor 27 is started, the second lead screw 28 will rotate, so that the cross bar 22 moves along the inner surface of the column 23 under the action of the second lead screw 28.

[0045] Among them, an extension column 29 is movably sleeved inside the bottom end of the upright column 23. A mounting plate 30 is fixedly installed at the bottom end of the extension column 29. The top end of the mounting plate 30 is movably connected to the bottom end of the upright column 23. A circular hole 31 is formed in the left end of the extension column 29.

[0046] The circular holes 31 are evenly formed on the left side of the outer surface of the extension column 29. The existence of the circular holes 31 will play an auxiliary positioning role for the extension column 29 and the mounting plate 30.

[0047] Among them, a round rod 32 located at the bottom left end of the upright column 23 is movably sleeved inside the left side of the circular hole 31. The left end of the round rod 32 penetrates through the upright column 23 and extends to the outside of the upright column 23 and is fixedly sleeved with a round plate 33. A spring 34 is fixedly installed at the right end of the round plate 33. The other end of the spring 34 is fixedly installed at the left end of the upright column 23.

[0048] When pulling the round plate 33, the round plate 33 will drive the round rod 32 to move and stretch the spring 34, so that the round rod 32 is separated from the circular hole 31, and the locking of the round rod 32 to the extension column 29 and the upright column 23 is released.

[0049] Working principle and usage process:

[0050] First of all, the operator pulls the round plate 33 according to actual needs, so that the round plate 33 drives the round rod 32 to move and stretch the spring 34 until the round rod 32 is separated from the circular hole 31, and the locking of the round rod 32 to the extension column 29 and the upright column 23 is released. Then the operator pushes the upright column 23, and the upright column 23 can move upward along the outer surface of the extension column 29 until the upright column 23 moves to an appropriate height. Then the operator releases the round plate 33. At this time, under the restoring action of the spring 34, the round rod 32 will return to its original position and be inserted into the corresponding another circular hole 31, thereby locking the position of the upright column 23. In this way, the adjustment of the height of the upright column 23 can be realized, thereby improving the convenience of its use.

[0051] Immediately afterwards, the operator rotates the first handle 11, so that the first threaded rod 10 rotates, so that the rectangular block 8 threadedly sleeved with the first threaded rod 10 drives one end of the inclined rod 7 to move along the inner surface of the fixed frame 9, and then the other end of the inclined rod 7 generates a pulling force on the disc 6, pulling the disc 6 to rotate around the circular shaft 5 as the axis. At this time, the Kirschner wire syringe 3 will rotate together with the disc 6 driven by the circular shaft 5 until the Kirschner wire syringe 3 rotates to the required puncture angle. In this way, it is convenient to adjust the puncture position at multiple angles.

[0052] Subsequently, the operator rotates the second handle 21, causing the second threaded rod 20 to rotate. As a result, the movable block 19 threadedly sleeved on the second threaded rod 20 moves along the inner surface of the vertical rod 15, driving one end of the connecting rod 18 to move. Consequently, the other end of the connecting rod 18 generates a thrust on the clamping block 17, pushing the clamping block 17 to move along the outer surface of the limiting rod 16 and separate from the gear 14. Then, the operator can rotate the gear 14, causing the gear 14 to drive the cylinder 13, the rotating rod 12, the mounting frame 2, and the Kirschner wire syringe 3 to rotate, thereby adjusting the puncture direction. Finally, the operator starts the first motor 25 and the second motor 27 respectively, causing the vertical rod 15 and the extension rod 24 to move horizontally under the action of the first lead screw 26, and the cross bar 22 to move vertically under the action of the second lead screw 28 until the Kirschner wire syringe 3 moves to a suitable position, and then the puncture operation can be started.

[0053] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intradermal positioning device for minimally invasive lumbar spine surgery, comprising a tray (1), characterized in that: The right end of the tray (1) is movably connected to a mounting frame (2), a Kirschner wire syringe (3) is movably sleeved inside the mounting frame (2), an auxiliary rod (4) is fixedly installed on the left side of the outer surface of the Kirschner wire syringe (3), the outer surface of the auxiliary rod (4) is movably sleeved with the inner surface of the left end of the mounting frame (2), a circular shaft (5) is fixedly installed on the right side of the outer surface of the Kirschner wire syringe (3), the right end of the circular shaft (5) passes through the mounting frame (2) and extends to the outside of the mounting frame (2) and is fixedly sleeved with a circular disk (6), the outer surface of the circular disk (6) is movably connected to the outer surface of the mounting frame (2), and the left side of the middle part of the front end of the circular disk (6) is hinged with An inclined rod (7), the other end of which is hingedly connected to a rectangular block (8), the rear end of the rectangular block (8) is movably connected to the front end of the installation frame (2), the rear end of the rectangular block (8) is internally movably sleeved with a fixing frame (9), the rear end of the fixing frame (9) is fixedly connected to the front end of the installation frame (2), the interior of the fixing frame (9) is internally movably sleeved with a first threaded rod (10), the outer surface of the first threaded rod (10) is threadably sleeved with the inner surface of the rectangular block (8), the top of the outer surface of the first threaded rod (10) is fixedly sleeved with a first handle (11), and the outer surface of the first handle (11) is movably connected to the outer surface of the fixing frame (9).

2. The intradermal positioning device for minimally invasive lumbar surgery according to claim 1, characterized in that: A rotating rod (12) is fixedly mounted on the top of the left end of the mounting frame (2); the bottom end of the rotating rod (12) is movably connected to the top end of the tray (1); a cylinder (13) is fixedly sleeved inside the left end of the rotating rod (12); the bottom end of the cylinder (13) is fixedly connected to the middle of the top end of the tray (1); a gear (14) is fixedly mounted on the top end of the cylinder (13); and a vertical rod (15) is movably sleeved inside the gear (14).

3. The intradermal positioning device for minimally invasive lumbar surgery according to claim 2, characterized in that: A limiting rod (16) is fixedly sleeved inside the bottom end of the vertical rod (15), and clamping blocks (17) are movably sleeved on the left and right sides of the outer surface of the limiting rod (16). There are two clamping blocks (17), and the bottoms of the opposite surfaces of the two clamping blocks (17) are movably connected to the left and right sides of the outer surface of the gear (14).

4. The intradermal positioning device for minimally invasive lumbar surgery according to claim 3, characterized in that: The top ends of the two clamping blocks (17) are respectively hinged with connecting rods (18), and the other ends of the connecting rods (18) are hinged with movable blocks (19). The outer surface of the movable block (19) is movably sleeved with the inner surface of the vertical rod (15). The internal thread of the movable block (19) is sleeved with a second threaded rod (20). The top end of the second threaded rod (20) penetrates the vertical rod (15) and extends to the outside of the vertical rod (15) and is fixedly sleeved with a second handle (21). The bottom end of the second handle (21) is movably connected to the top end of the vertical rod (15).

5. The intradermal positioning device for minimally invasive lumbar surgery according to claim 2, characterized in that: The top of the left end of the vertical rod (15) is movably connected to a cross rod (22), and the left side of the outer surface of the cross rod (22) is movably sleeved with a column (23).

6. The intradermal positioning device for minimally invasive lumbar surgery according to claim 5, characterized in that: An extension rod (24) is movably sleeved inside the cross bar (22); the right end of the extension rod (24) passes through the cross bar (22) and extends to the outside of the cross bar (22) and is fixedly connected to the left end of the vertical rod (15); a first motor (25) is fixedly installed on the left side of the top end of the cross bar (22); a first lead screw (26) is fixedly sleeved on the other end of the output shaft of the first motor (25); the left side of the outer surface of the first lead screw (26) is threadedly sleeved with the inner surface of the extension rod (24).

7. The intradermal positioning device for minimally invasive lumbar surgery according to claim 5, characterized in that: A second motor (27) is fixedly mounted on the top of the column (23); a second lead screw (28) is fixedly sleeved on the other end of the output shaft of the second motor (27); the bottom end of the second lead screw (28) passes through the column (23) and extends into the interior of the column (23); the top of the outer surface of the second lead screw (28) is threadedly sleeved with the inner surface of the left end of the cross bar (22).

8. The intradermal positioning device for minimally invasive lumbar surgery according to claim 5, characterized in that: An extension column (29) is movably sleeved inside the bottom end of the column (23), a mounting plate (30) is fixedly mounted on the bottom end of the extension column (29), the top end of the mounting plate (30) is movably connected to the bottom end of the column (23), and a circular hole (31) is opened at the left end of the extension column (29).

9. The intradermal positioning device for minimally invasive lumbar surgery according to claim 8, characterized in that: A round rod (32) located at the bottom of the left end of the column (23) is movably sleeved on the left side of the circular hole (31); the left end of the round rod (32) passes through the column (23) and extends to the outside of the column (23) and is fixedly sleeved with a round plate (33); a spring (34) is fixedly installed on the right end of the round plate (33); the other end of the spring (34) is fixedly installed on the left end of the column (23).

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