Slip-lift tool for minimally invasive surgery

Abstract

The present application relates to the technical field of medical devices, and particularly relates to a spondylolisthesis lifting tool for minimally invasive surgery. The spondylolisthesis lifting tool for minimally invasive surgery comprises a connector, a fixing sleeve and a lifting sleeve. The connector comprises a connecting rod, a first connecting mechanism and a second connecting mechanism. The first connecting mechanism and the second connecting mechanism are arranged on the connecting rod at intervals. The first connecting mechanism comprises a fixed component and a movable component. The fixed component is connected with the fixing sleeve, and the movable component is connected with the connecting rod. The movable component can rotate or be locked with the fixed component as a reference. The second connecting mechanism is installed on the connecting rod and its position on the connecting rod can be adjusted and locked. The second connecting mechanism is connected with the lifting sleeve. The present application has a reasonable structure design, is convenient to operate, and can meet all the functions required in the process of spondylolisthesis reduction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and particularly relates to a spondylolisthesis pulling tool for minimally invasive surgery. BACKGROUND

[0002] Spondylolisthesis is a medical term used to describe the slippage of a vertebrae within the spinal canal. The human spine is a perfectly consistent S-shape, but spondylolisthesis distorts this shape. In spondylolisthesis, a vertebra (spinal bone) slips forward and over the vertebra below it. Spondylolisthesis can be classified (categorized) into five different types: degenerative, isthmic, developmental / congenital, disease-caused, and trauma-caused spondylolisthesis.

[0003] The severity of spondylolisthesis is determined by the degree of slippage, or the percentage of one vertebral body that has slipped over another. The higher the grade of spondylolisthesis, the more severe the symptoms. Each grade of spondylolisthesis represents 25% slippage. Although spondylolisthesis can occur anywhere in the spine, it is most common in the lumbar region, which is a major source of back pain. Even in many cases, spondylolisthesis symptoms can be improved with non-surgical treatment, but severe spondylolisthesis can require surgical treatment.

[0004] The spondylolisthesis pulling tool is used for the reduction of spondylolisthesis in minimally invasive surgery, and it is more difficult than open surgery. The existing spondylolisthesis pulling tool has many defects such as complex structure, inconvenient operation and limited function in actual use. SUMMARY

[0005] The present application aims to provide a spondylolisthesis pulling tool for minimally invasive surgery, which overcomes the defects of the prior art, has a reasonable structure design, is convenient to operate, and meets all the functions required in the reduction of spondylolisthesis.

[0006] The technical scheme adopted by the present application to solve the technical problems is as follows:

[0007] A spondylolisthesis pulling tool for minimally invasive surgery comprises a connector, a fixing sleeve and a pulling sleeve, wherein:

[0008] The connector comprises a connecting rod, a first connecting mechanism and a second connecting mechanism, the first connecting mechanism and the second connecting mechanism are arranged on the connecting rod in a spaced manner, the first connecting mechanism is used for connecting the fixing sleeve, and the second connecting mechanism is used for connecting the pulling sleeve;

[0009] The first connecting mechanism comprises a fixed component and a movable component, the fixed component is connected with the fixing sleeve, the movable component is connected with the connecting rod, and the movable component can rotate or be locked with the fixed component as a reference;

[0010] The second connecting mechanism is installed on the connecting rod and its position on the connecting rod can be adjusted and locked, and the second connecting mechanism is connected with the pulling sleeve;

[0011] The spondylolisthesis pulling tool for minimally invasive surgery is used before, according to the distance between the normal vertebra and the spondylolisthesis, the position of the second connecting mechanism on the connecting rod is adjusted, and then the second connecting mechanism is locked; the spondylolisthesis pulling tool for minimally invasive surgery is used, the lower end of the fixed sleeve and the pulling sleeve is connected with the nail seat of a pedicle screw, the nail body of the pedicle screw connected with the fixed sleeve is connected with the normal vertebra, the nail body of the pedicle screw connected with the pulling sleeve is connected with the spondylolisthesis, and the nail seat of the two pedicle screws is provided with a rod body, in the process of reduction, the fixed sleeve is fixed, the movable assembly of the first connecting mechanism is adjusted, the connecting plate, the second connecting mechanism on the connecting rod and the pulling sleeve connected with the second connecting mechanism are pulled to pull the spondylolisthesis, so as to achieve the treatment effect of spondylolisthesis reduction.

[0012] Further, the pulling sleeve is provided with an adjusting mechanism, the connecting position of the pulling sleeve and the second connecting mechanism can be adjusted through the adjusting mechanism, the pulling sleeve is pulled up through the adjusting mechanism, the movable assembly of the first connecting mechanism adjusts the pulling and reducing angle, and the adjusting mechanism further adjusts the pulling height of the spondylolisthesis, so that the operation is more convenient and the reduction effect is better.

[0013] Further, the pulling sleeve and the fixed sleeve are both provided with a long strip-shaped opening along the length direction thereof, in actual use, the pulling sleeve and the fixed sleeve can both be selected from the minimally invasive sleeve of the Weigao Group, the long strip-shaped opening of the sleeve side wall of the minimally invasive sleeve is provided with a long strip-shaped opening, and the long strip-shaped opening of the minimally invasive sleeve has a certain tension on both sides.

[0014] Further, the fixed assembly of the first connecting mechanism comprises a connecting pipe and a fixed seat, wherein:

[0015] The inner wall of the connecting pipe is provided with a first clamping block, the first clamping block is clamped on the long strip-shaped opening of the fixed sleeve in interference fit, because the sleeve body of the fixed sleeve on both sides of the long strip-shaped opening has a certain tension, the clamping block can be clamped on the fixed sleeve and the position does not change when it is not disturbed by external force; one end of the connecting pipe is provided with an opening, the opening end of the connecting pipe is provided with two clamping claws, and the clamping claws are provided with clamping edges;

[0016] The fixed seat is provided with a fitting groove matched with the shape of the opening end of the connecting pipe, the fixed seat is fitted on the connecting pipe through the fitting groove, the clamping claws pass through the fixed seat, and the end face teeth arranged in a circular array are arranged on the end of the fixed seat away from the connecting pipe; the relative position of the fixed seat and the connecting pipe does not change, the position of the connecting pipe does not change, and the position of the fixed seat does not change under the condition that the position of the fixed sleeve does not change.

[0017] Further, the movable assembly of the first connecting mechanism comprises a connecting rod, a first movable seat, a second movable seat and a locking nut, wherein:

[0018] The connecting rod has a first connecting rod through hole on its side, through which the connecting rod passes. One end of the connecting rod has a limiting through hole along its end face that allows the claw to pass through. A ring-shaped limiting groove is provided inside the limiting through hole. The other end of the connecting rod has an external thread. An anti-rotation limiting surface is provided on the outer wall of the connecting rod at a position corresponding to the limiting groove.

[0019] The fixed seat has a first mounting hole at the end away from the connecting pipe that matches the shape of the anti-rotation limiting surface. The fixed seat is set on the anti-rotation limiting surface through the mounting hole. After installation, the fixed seat will not rotate circumferentially. The claw is inserted into the limiting hole, and the edge of the claw is inserted into the annular limiting groove. The engagement of the annular limiting groove and the edge allows the connecting ring and the connecting rod to be rotatably connected.

[0020] The locking nut is screwed onto the external thread of the connecting rod;

[0021] The first movable seat and the second movable seat are symmetrically arranged. The first movable seat and the second movable seat are sleeved on the outer wall of the connecting rod and located between the fixed seat and the locking nut. The first movable seat is close to the fixed seat and the second movable seat is close to the locking nut. The first movable seat has a second mounting hole that matches the shape of the anti-rotation limiting surface. The end face of the first movable seat away from the second movable seat has end face teeth arranged in a circular array. The end face teeth of the first movable seat match the end face teeth of the fixed seat. The first movable seat and the second movable seat both have semi-circular through holes. The semi-circular through holes of the first movable seat and the second movable seat are spliced ​​to form a through hole that can pass through the first connecting rod. The through hole formed by splicing the semi-circular through holes of the first movable seat and the second movable seat corresponds to the position of the through hole of the first connecting rod on the connecting rod.

[0022] The connecting rod passes through the perforation formed by splicing the semi-circular perforations of the first movable seat and the second movable seat, as well as the perforation of the first connecting rod;

[0023] When the lifting sleeve needs to be adjusted in angle, tighten the locking nut towards the end away from the connecting pipe. At this time, the second movable seat is loosened. Pull the first and second movable seats towards the locking nut end. At this time, the end face teeth of the first movable seat leave the end face teeth of the fixed seat and the first movable seat leaves the anti-rotation limiting surface. The first movable seat can then rotate circumferentially. During the rotation, it drives the connecting rod and the lifting sleeve set on the connecting rod to rotate. After the lifting sleeve rotates to the appropriate angle, tighten the locking nut again towards the connecting pipe to squeeze the first and second movable seats together. The first movable seat resets and is fixed to the fixed seat again.

[0024] Furthermore, the fixing component of the first connecting mechanism also includes a gasket, which is disposed between the two claws of the connecting tube. The gasket is provided with a slider that can be inserted into the annular limiting groove. The gasket helps to keep the claw edge stable in the annular limiting groove.

[0025] Furthermore, the connecting rod segment connected to the second connecting mechanism is threaded. The second connecting mechanism includes a connecting block with a through hole for a lifting sleeve. A second locking block is provided on the inner wall of the through hole for the lifting sleeve, and the second locking block is interference-fitted into the elongated opening of the lifting sleeve. One end of the connecting block has a button mounting groove along its end face, and a button is provided in the button mounting groove. The button is connected to the bottom surface of the button mounting groove by a spring. The button has an elongated hole through which the connecting rod can pass. The inner wall of the elongated hole is provided with limiting teeth that can lock the threads on the connecting rod. A second connecting rod through hole is provided on the connecting block at a position that mates with the elongated hole of the button. When the spring is in its natural state, the limiting teeth are locked between two threads of the connecting rod, and a portion of the button protrudes from the button mounting groove. At this time, the position of the second connecting mechanism on the connecting rod is stable. When the button is pressed, the limiting teeth disengage from the threads of the connecting rod, and the position of the second connecting mechanism on the connecting rod can be adjusted.

[0026] Furthermore, the rod end of the connecting rod used to connect to the second mechanism is provided with an anti-rotation cut along its length direction, and the shape of the through hole of the second connecting rod matches the shape of the second connecting rod after the anti-rotation cut is provided.

[0027] Furthermore, the adjusting mechanism on the lifting sleeve includes an adjusting nut. The outer wall of the lifting sleeve is provided with a threaded section, and the adjusting nut is disposed on the threaded section of the outer wall of the lifting sleeve. The adjusting nut limits the height of the lifting sleeve, and rotating the adjusting nut can adjust the height of the lifting sleeve.

[0028] The beneficial effects of the present invention are as follows: Compared with the prior art, the minimally invasive surgical slip lifting tool of the present invention has the following advantages: (1) The lifting function can be realized by the cooperation of the connector and the first connecting mechanism, and the spreading function can be realized by the cooperation of the connecting rod of the connector and the second connecting mechanism; (2) After the connector is connected to the fixed sleeve end, the lifting sleeve can be locked and fixed in multiple directions by the first connecting mechanism, and can be rotated around the connecting rod and swung around the fixed seat of the first connecting mechanism; (3) The distance between the fixed sleeve and the lifting sleeve can be adjusted according to the requirements; (4) The lifting sleeve can be lifted upward by the adjustment mechanism. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2This is a schematic diagram of the overall structure of the present invention from another angle;

[0031] Figure 3 This is a schematic diagram of the overall structure of the connector of the present invention;

[0032] Figure 4 This is an exploded view of the structure of the first connecting mechanism of the present invention;

[0033] Figure 5 This is a cross-sectional schematic diagram of the first connecting mechanism of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the fixed seat, the first movable seat, and the second movable seat of the first connecting mechanism of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the second connecting mechanism of the present invention;

[0036] Among them, 1 is a connector, 2 is a fixed sleeve, 3 is a lifting sleeve, 31 is an adjusting mechanism, 311 is an adjusting nut, 312 is a threaded section, 4 is a connecting rod, 231 is a long strip opening, 5 is a first connecting mechanism, 51 is a fixing component, 511 is a connecting tube, 512 is a fixing seat, 513 is a gasket, 514 is a first locking block, 515 is a locking claw, 516 is a locking edge, 517 is an assembly groove, 52 is a movable component, 521 is a connecting rod, 522 is a first movable seat, 523 is a second movable seat, and 524 is a movable component. Locking nut, 525 First connecting rod perforation, 526 Limiting perforation, 527 Annular limiting groove, 528 External thread, 529 Anti-rotation limiting surface, 5210 First mounting hole, 5211 Second mounting hole, 5212 Semi-circular perforation, 6 Second connecting mechanism, 61 Connecting block, 62 Lifting sleeve perforation, 63 Second locking block, 64 Button, 65 Long oval hole, 66 Limiting tooth, 67 Second connecting rod perforation, 7 Pedicle screw, 8 Normal vertebra, 9 Slipped vertebra. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0038] like Figures 1-7 In the illustrated embodiment, a minimally invasive surgical slip-lifting tool includes a connector 1, a fixing sleeve 2, and a lifting sleeve 3, wherein:

[0039] The connector 1 includes a connecting rod 4, a first connecting mechanism 5, and a second connecting mechanism 6. The first connecting mechanism 5 and the second connecting mechanism 6 are spaced apart on the connecting rod 4. The first connecting mechanism 5 is used to connect the fixed sleeve 2, and the second connecting mechanism 6 is used to connect the lifting sleeve 3.

[0040] The first connecting mechanism 5 includes a fixed component 51 and a movable component 52. The fixed component 51 is connected to the fixed sleeve 2, and the movable component 52 is connected to the connecting rod 4. The movable component 52 can rotate or lock with the fixed component 51 as a reference.

[0041] The second connecting mechanism 6 is mounted on the connecting rod 4 and its position on the connecting rod 4 can be adjusted and locked. The second connecting mechanism 6 is connected to the lifting sleeve 3.

[0042] Before using the minimally invasive surgical slippage traction tool, adjust the position of the second connecting mechanism 6 on the connecting rod 4 according to the distance between the normal vertebra and the slipped vertebra, and then lock the second connecting mechanism 6. When using the minimally invasive surgical slippage traction tool, the lower ends of the fixing sleeve 2 and the lifting sleeve 3 are both connected to the nail seat of a pedicle screw 7. The nail body of the pedicle screw 7 connected to the fixing sleeve 2 is connected to the normal vertebra 8, and the nail body of the pedicle screw 7 connected to the lifting sleeve 3 is connected to the slipped vertebra 9. A rod is set between the nail seats of the two pedicle screws. During the reduction process, the fixing sleeve 2 does not move. By adjusting the movable component 52 of the first connecting mechanism 5, the connecting plate and the second connecting mechanism 6 on the connecting rod 4 and the lifting sleeve 3 connected to the second connecting mechanism 6 are driven to lift the slipped vertebra, so as to achieve the therapeutic effect of spinal slippage reduction.

[0043] In this embodiment, the lifting sleeve 3 is provided with an adjustment mechanism 31. The connection position between the lifting sleeve 3 and the second connecting mechanism 6 can be adjusted by the adjustment mechanism 31. When the lifting sleeve 3 is pulled up by the adjustment mechanism 31, the movable component 52 of the first connecting mechanism 5 adjusts the lifting and repositioning angle. The adjustment mechanism 31 further adjusts the lifting height of the slipped vertebra, making the operation more convenient and the repositioning effect better.

[0044] In this embodiment, both the lifting sleeve 3 and the fixing sleeve 2 have elongated openings 231 along their own length. In actual use, both the lifting sleeve 3 and the fixing sleeve 2 can be made from the minimally invasive sleeve of Weigao Group. The side wall of the minimally invasive sleeve has elongated openings, and the elongated openings 231 of the minimally invasive sleeve have a certain tension on both sides.

[0045] In this embodiment, the fixing component 51 of the first connecting mechanism 5 includes a connecting pipe 511 and a fixing base 512, wherein:

[0046] The inner wall of the connecting pipe 511 is provided with a first locking block 514, which is interference-fitted onto the elongated opening 231 of the fixed sleeve 2. Due to the tension of the cylinder body of the fixed sleeve 2 on both sides of the elongated opening 231, the locking block can be locked onto the fixed sleeve 2 and its position does not change when not disturbed by external force. One end of the connecting pipe 511 is open, and the open end of the connecting pipe 511 is provided with two claws 515, and the claws 515 are provided with locking edges 516.

[0047] The fixing seat 512 is provided with an assembly groove 517 that matches the shape of the open end of the connecting pipe 511. The fixing seat 512 is assembled onto the connecting pipe 511 through the assembly groove 517. The claw 515 passes through the fixing seat 512. The end of the fixing seat 512 away from the connecting pipe 511 is provided with end face teeth arranged in a circular array. The fixing seat 512 and the connecting pipe 511 are connected so that their relative positions do not change. When the position of the fixing sleeve 2 remains unchanged, the position of the connecting pipe 511 remains unchanged, and the position of the fixing seat 512 also remains unchanged.

[0048] In this embodiment, the movable component 52 of the first connecting mechanism 5 includes a connecting rod 521, a first movable seat 522, a second movable seat 523, and a locking nut 524, wherein:

[0049] The connecting rod 521 has a first connecting rod through hole 525 on its side. The connecting rod 4 passes through the first connecting rod through hole 525. One end of the connecting rod 521 has a limiting through hole 526 along its end face that can pass through the claw 515. A ring-shaped limiting groove 527 is provided in the limiting through hole 526. The other end of the connecting rod 521 is provided with an external thread 528. An anti-rotation limiting surface 529 is provided on the outer wall of the connecting rod 521 at a position corresponding to the ring-shaped limiting groove 527.

[0050] The fixed seat 512 has a first mounting hole 5210 at the end away from the connecting pipe 511, which matches the shape of the anti-rotation limiting surface 529. The fixed seat 512 is set on the anti-rotation limiting surface 529 through the mounting hole. After installation, the fixed seat 512 will not rotate circumferentially. The claw 515 is inserted into the limiting through hole 526, and the lip 516 on the claw 515 is inserted into the annular limiting groove 527. The cooperation between the annular limiting groove 527 and the lip 516 allows the connecting pipe and the connecting rod 521 to be rotatably connected.

[0051] The locking nut 524 is screwed onto the external thread 528 of the connecting rod 521;

[0052] The first movable seat 522 and the second movable seat 523 are symmetrically arranged. The first movable seat 522 and the second movable seat 523 are sleeved on the outer wall of the connecting rod 521 and located between the fixed seat 512 and the locking nut 524. The first movable seat 522 is close to the fixed seat 512, and the second movable seat 523 is close to the locking nut 524. The first movable seat 522 has a second mounting hole 5211 that matches the shape of the anti-rotation limiting surface 529. The end face of the first movable seat 522 away from the second movable seat 523 is provided with... The end face teeth are arranged in a circular array. The end face teeth of the first movable seat 522 cooperate with the end face teeth of the fixed seat 512. The first movable seat 522 and the second movable seat 523 are both provided with semi-circular through holes 5212. The semi-circular through holes 5212 of the first movable seat 522 and the second movable seat 523 are spliced ​​to form a through hole that can pass through the first connecting rod 4. The through hole formed by splicing the semi-circular through holes 5212 of the first movable seat 522 and the second movable seat 523 corresponds to the position of the first connecting rod through hole 525 on the connecting rod 521.

[0053] The connecting rod 4 passes through the perforation formed by splicing the semi-circular perforation 5212 of the first movable seat 522 and the second movable seat 523, as well as the first connecting rod perforation 525.

[0054] When the lifting sleeve needs to be adjusted, screw the locking nut 524 toward the end away from the connecting tube 511. At this time, the second movable seat 523 is loosened. Pull the first movable seat 522 and the second movable seat 523 toward the locking nut 524. At this time, the end face teeth of the first movable seat 522 leave the end face teeth of the fixed seat 512 and the first movable seat 522 leaves the anti-rotation limiting surface 529. The first movable seat 522 can then rotate circumferentially. During the rotation, it drives the connecting rod 4 and the lifting sleeve 3 set on the connecting rod 4 to rotate. After the lifting sleeve 3 rotates to a suitable angle, screw the locking nut 524 back toward the connecting tube 511. This will squeeze the first movable seat 522 and the second movable seat 523 together. The first movable seat 522 resets and is fixed to the fixed seat 512 again.

[0055] In this embodiment, the fixing component 51 of the first connecting mechanism 5 further includes a gasket 513. The gasket 513 is disposed between the two claws 515 of the connecting tube 511. The gasket 513 is provided with a slider that can be inserted into the annular limiting groove 527. The gasket is provided to help keep the locking edge 516 stable in the annular limiting groove 527.

[0056] In this embodiment, the connecting rod 4 has a threaded section connected to the second connecting mechanism 6. The second connecting mechanism 6 includes a connecting block 61, which has a lifting sleeve through hole 62. A second locking block 63 is provided on the inner wall of the lifting sleeve through hole 62, and the second locking block 63 is interference-fitted onto the elongated opening 231 of the lifting sleeve 3. One end of the connecting block 61 has a button mounting groove along its end face, and a button 64 is provided in the button mounting groove. The button 64 is connected to the bottom surface of the button mounting groove by a spring. The button 64 has an elongated hole 65 that can pass through the connecting rod 4. The wall is provided with a limiting tooth 66 that can lock the thread on the connecting rod 4. The connecting block 61 is provided with a second connecting rod through hole 67 at the position that mates with the elongated hole 65 of the button. When the spring is in its natural state, the limiting tooth is locked between two threaded teeth of the connecting rod 4, and part of the button 64 protrudes from the button mounting groove. At this time, the position of the second connecting mechanism 6 on the connecting rod 4 is stable. When the button 64 is pressed, the limiting tooth 66 disengages from the thread of the connecting rod 4, and the position of the second connecting mechanism 6 on the connecting rod 4 can be adjusted.

[0057] In this embodiment, the rod segment of the connecting rod 4 used to connect the second connecting mechanism is provided with an anti-rotation cut surface along its length direction, and the shape of the through hole 67 of the second connecting rod matches the shape of the second connecting rod 4 after the anti-rotation cut surface is provided.

[0058] In this embodiment, the adjustment mechanism 31 on the lifting sleeve 3 includes an adjustment nut 311. The outer wall of the lifting sleeve 3 is provided with a threaded section 312. The adjustment nut 311 is disposed on the threaded section 312 on the outer wall of the lifting sleeve 3. The adjustment nut 311 limits the height of the lifting sleeve 3. By rotating the adjustment nut 311, the height of the lifting sleeve 3 can be adjusted.

[0059] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the product form and style of the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of the present invention should fall within the patent protection scope of the present invention.

Claims

1. A slip-lifting tool for minimally invasive surgery, characterized in that: Includes connectors, retaining sleeves, and lifting sleeves, wherein: The connector includes a connecting rod, a first connecting mechanism, and a second connecting mechanism, which are spaced apart on the connecting rod. The first connecting mechanism includes a fixed component and a movable component. The fixed component is connected to a fixed sleeve, and the movable component is connected to a connecting rod. The movable component can rotate or lock with the fixed component as a reference. The second connecting mechanism is mounted on the connecting rod and its position on the connecting rod can be adjusted and locked. The second connecting mechanism is connected to the lifting sleeve. The lower ends of both the lifting sleeve and the fixing sleeve are connected to the pedicle screw. The pedicle screw connected to the fixing sleeve is connected to the normal vertebra, and the pedicle screw connected to the lifting sleeve is connected to the slipped vertebra. By using the connector and the first connecting mechanism to swing and lift the sleeve, the slip cone is driven to swing and lift. The connecting rod of the connector and the second connecting mechanism work together to achieve the opening function. The lifting sleeve is provided with an adjustment mechanism, which includes an adjustment nut. The outer wall of the lifting sleeve is provided with a threaded section, and the adjustment nut is provided on the threaded section of the outer wall of the lifting sleeve. The connection position between the lifting sleeve and the second connecting mechanism can be adjusted through the adjustment mechanism, so as to realize the upward lifting of the slip cone driven by the lifting sleeve.

2. The minimally invasive surgical slip-lifting tool according to claim 1, characterized in that: Both the lifting sleeve and the fixing sleeve have elongated openings along their length.

3. The minimally invasive surgical slip-lifting tool according to claim 2, characterized in that: The fixing component of the first connecting mechanism includes a connecting tube and a fixing base, wherein: The inner wall of the connecting tube is provided with a first locking block, which is interference-fitted into the elongated opening of the fixed sleeve. One end of the connecting tube is open, and two locking claws are provided at the open end of the connecting tube, with locking edges provided on the locking claws. The fixing seat is provided with an assembly groove that matches the shape of the end of the connecting pipe with an opening. The fixing seat is assembled onto the connecting pipe through the assembly groove. The pawl passes through the fixing seat. The end of the fixing seat away from the connecting pipe is provided with end face teeth arranged in a circular array.

4. The minimally invasive surgical slip-lifting tool according to claim 3, characterized in that: The movable components of the first connecting mechanism include a connecting rod, a first movable seat, a second movable seat, and a locking nut, wherein: The connecting rod has a first connecting rod through hole on its side. One end of the connecting rod has a limiting through hole along its end face that can pass through the pawl. A ring-shaped limiting groove is provided in the limiting through hole. The other end of the connecting rod is provided with an external thread. An anti-rotation limiting surface is provided on the outer wall of the connecting rod at a position corresponding to the ring-shaped limiting groove. The fixed seat has a first mounting hole at the end away from the connecting pipe that matches the shape of the anti-rotation limiting surface. The fixed seat is set on the anti-rotation limiting surface through the mounting hole. The claw passes through the limiting through hole and the claw edge is inserted into the annular limiting groove. The locking nut is screwed onto the external thread of the connecting rod; The first movable seat and the second movable seat are symmetrically arranged. The first movable seat and the second movable seat are sleeved on the outer wall of the connecting rod and located between the fixed seat and the locking nut. The first movable seat is close to the fixed seat and the second movable seat is close to the locking nut. The first movable seat has a second mounting hole that matches the shape of the anti-rotation limiting surface. The end face of the first movable seat away from the second movable seat has end face teeth arranged in a circular array. The end face teeth of the first movable seat match the end face teeth of the fixed seat. The first movable seat and the second movable seat both have semi-circular through holes. The semi-circular through holes of the first movable seat and the second movable seat are spliced ​​to form a through hole that can pass through the first connecting rod. The through hole formed by splicing the semi-circular through holes of the first movable seat and the second movable seat corresponds to the position of the through hole of the first connecting rod on the connecting rod. The connecting rod passes through the perforation formed by splicing the semi-circular perforations of the first movable seat and the second movable seat, as well as the perforation of the first connecting rod.

5. The minimally invasive surgical slip-lifting tool according to claim 4, characterized in that: The fixing component of the first connecting mechanism also includes a gasket, which is disposed between the two claws of the connecting tube and has a slider that can be inserted into the annular limiting groove.

6. The slip-lifting tool for minimally invasive surgery according to claim 2, characterized in that: The connecting rod segment that connects to the second connecting mechanism is threaded.

7. The minimally invasive surgical slip-lifting tool according to claim 6, characterized in that: The second connecting mechanism includes a connecting block with a through hole for a lifting sleeve. A second locking block is provided on the inner wall of the through hole for the lifting sleeve, and the second locking block is interference-fitted into the elongated opening of the lifting sleeve. A button mounting groove is provided on one end of the connecting block along its end face. A button is provided in the button mounting groove, and the button is connected to the bottom surface of the button mounting groove by a spring. An elongated hole for a connecting rod to pass through is provided on the button. The inner wall of the elongated hole is provided with limiting teeth that can lock the threads on the connecting rod. A second connecting rod through hole is provided on the connecting block at a position that mates with the elongated hole of the button.

8. The minimally invasive surgical slip-lifting tool according to claim 7, characterized in that: The connecting rod segment used to connect to the second connecting mechanism has an anti-rotation cut along its length, and the shape of the through hole in the second connecting rod matches the shape of the second connecting rod after the anti-rotation cut is provided.

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