CN117717444A - Expansion type interbody fusion cage applied to minimally invasive spine surgery - Google Patents
Expansion type interbody fusion cage applied to minimally invasive spine surgery Download PDFInfo
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- CN117717444A CN117717444A CN202311727856.4A CN202311727856A CN117717444A CN 117717444 A CN117717444 A CN 117717444A CN 202311727856 A CN202311727856 A CN 202311727856A CN 117717444 A CN117717444 A CN 117717444A
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- interbody fusion
- fusion cage
- minimally invasive
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- 230000004927 fusion Effects 0.000 title claims abstract description 60
- 238000001356 surgical procedure Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000002324 minimally invasive surgery Methods 0.000 abstract description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 208000008035 Back Pain Diseases 0.000 description 1
- 240000004282 Grewia occidentalis Species 0.000 description 1
- 206010050296 Intervertebral disc protrusion Diseases 0.000 description 1
- 208000008930 Low Back Pain Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 208000007103 Spondylolisthesis Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 206010025005 lumbar spinal stenosis Diseases 0.000 description 1
- 210000004705 lumbosacral region Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 208000005198 spinal stenosis Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The invention discloses an expansion type interbody fusion cage applied to spine minimally invasive surgery, which relates to the technical field of interbody fusion cage, and comprises the following components: the device comprises two support plates which are arranged in parallel, an anti-slip mechanism arranged between the support plates, two opposite support pieces arranged between the support plates, and a driving mechanism arranged between the support pieces and used for lifting the support pieces; the driving mechanism can also adjust the taper of the expansion type interbody fusion cage applied to the minimally invasive spine surgery. When the first positive and negative screw rod and the second positive and negative screw rod are independently rotated, the heights of two sides of the support piece are inconsistent, and the expansion type inter-cone fusion device can present taper which can be adjusted and has strong adaptability.
Description
Technical Field
The invention relates to the technical field of interbody fusion devices, in particular to an expansion type interbody fusion device applied to minimally invasive spinal surgeries.
Background
Intervertebral fusion is a surgical approach to the spine for the treatment of degenerative diseases of the lumbar spine. This procedure requires the removal of the disc between the two vertebrae and implantation of an autologous ilium or fusion cage between the two vertebrae to facilitate vertebral fusion. The procedure typically employs an internal fixation method to firmly attach the two vertebrae together. The indications for the interbody fusion include lumbar spondylolisthesis, lumbar spinal stenosis, lumbar intervertebral disc-derived lumbago, recurrent lumbar disc herniation, lumbar instability and the like. An intersyramid cage is a medical device used in spinal fusion procedures and has the primary function of facilitating fusion between vertebrae. The intersyramid fusion cage is typically made of titanium alloy or biocompatible material, and is of varying shape and size to accommodate different patient and surgical needs. In an interbody fusion procedure, a physician will choose the appropriate interbody fusion cage according to the patient's particular situation and implant it between the two vertebrae. The design of the intersyramid fusion cage may promote stability and fusion between vertebrae while reducing the risk of complications. The use of an intersyramid fusion cage may provide a number of benefits such as pain relief, improved spinal function, improved quality of life, etc.
The initial interbody fusion cage is fixed in size and shape, the space between the vertebrae needs to be trimmed according to the size and shape of the interbody fusion cage before implantation, and the interbody fusion cage is implanted under the condition of insufficient height, so that the interbody fusion cage has the function of adjusting the height for further improvement. The prior inter-cone fusion device with height adjusting function is synchronous lifting/lowering, and the adjustment of the inclination angle can only depend on the original taper of the inter-cone fusion device, so that the situation that the clearance taper between vertebrae is not matched with the taper of the inter-cone fusion device exists, the fixation instability of the inter-cone fusion device in the initial stage of implantation can generate slippage, and the inter-cone fusion effect is poor even failure occurs.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an expansion type interbody fusion cage applied to minimally invasive spinal surgery, which solves the problems in the background art.
In order to achieve the above purpose, the invention is realized by the following technical scheme: an inflatable interbody fusion cage for minimally invasive spinal surgery, comprising: the device comprises two support plates which are arranged in parallel, an anti-slip mechanism arranged between the support plates, two opposite support pieces arranged between the support plates, and a driving mechanism arranged between the support pieces and used for lifting the support pieces; a first trapezoid supporting block is arranged on one side of the bottom surface of the supporting piece, a second trapezoid supporting block is arranged on the other side of the bottom surface of the supporting piece, a first C-shaped sliding groove is formed in the waist line on two sides of the first trapezoid supporting block, and a second C-shaped sliding groove is formed in the waist line on two sides of the second trapezoid supporting block; the driving mechanism includes: the first positive and negative tooth screw rods are arranged between the support plates and between the first trapezoid support blocks, the second positive and negative tooth screw rods are arranged between the support plates and between the second trapezoid support blocks, the two first sliding blocks are arranged on the first positive and negative tooth screw rods and move oppositely or oppositely, and the two second sliding blocks are arranged on the second positive and negative tooth screw rods and move oppositely or oppositely; the first sliding block and the second sliding block have the same structure and comprise: the base body block is in threaded fit with the first positive and negative screw rod or the second positive and negative screw rod, the first connecting rods are arranged at the upper end and the lower end of the base body block, the ball body is arranged at the tail end of the first connecting rod, and the ball body slides in the first C-shaped sliding groove or the second C-shaped sliding groove and cannot deviate from the first C-shaped sliding groove or the second C-shaped sliding groove.
Preferably, the support member is provided with a first hole exposing the anti-slip mechanism.
Preferably, the outer bottom surface of the supporting piece is provided with a plurality of pointed cones.
Preferably, both ends of the first positive and negative tooth screw rod and the second positive and negative tooth screw rod are provided with a straight slot, and the supporting plate is provided with a first round hole exposing the straight slot.
Preferably, the anti-slip mechanism includes: the shell is arranged between the support plates, the rotating shaft penetrates through the shell, the first drilling nails are arranged in the shell and driven by the rotating shaft to rotate upwards, and the second drilling nails are arranged in the shell and driven by the rotating shaft to rotate downwards.
Preferably, the first drill nail comprises a first drill bit, a first threaded rod arranged below the first drill bit, and a first hexagonal rod arranged below the first threaded rod; the second drilling nail comprises a second drill bit, a second threaded rod arranged below the second drill bit and a second hexagonal rod arranged below the second threaded rod.
Preferably, a first cavity positioned in the middle is arranged in the shell, a second cavity positioned at one side of the first cavity, a second cavity positioned at the other side of the first cavity, and a worm section positioned in the first cavity is arranged on the rotating shaft; a first worm wheel meshed with the worm section is arranged in the second cavity, a first hexagonal hole is formed in the center of the first worm wheel, a first threaded hole leading to the outside of the first cavity is formed in the upper end of the first cavity, a first hexagonal rod is arranged in the first hexagonal hole, and the first threaded rod is in threaded fit with the first threaded hole; the third cavity is internally provided with a second worm wheel meshed with the worm section, the circle center of the second worm wheel is provided with a second hexagonal hole, the lower end of the second cavity is provided with a second threaded hole leading to the outside of the third cavity, the second hexagonal rod is arranged in the second hexagonal hole, and the second threaded rod is in threaded fit with the second threaded hole.
Preferably, the two sides of the shell are provided with second connecting rods connected with the supporting plates.
Preferably, the support plate is provided with a second round hole which is rotationally connected with the rotating shaft, and two ends of the rotating shaft are provided with inner four-angle holes.
Preferably, the support plate is provided with second holes positioned at two sides of the second round hole.
Compared with the prior art, the invention has the following beneficial effects:
1. when the expansion type interbody fusion cage applied to the minimally invasive spine surgery rotates the first positive and negative screw rod and the second positive and negative screw rod simultaneously, the first sliding block and the second sliding block move relatively or oppositely, and the supporting piece is lifted by being matched with conical spaces on two sides of the first trapezoidal supporting block and the second trapezoidal supporting block, so that the height of the expansion type interbody fusion cage is increased or decreased; when the first positive and negative tooth screw rod or the second positive and negative tooth screw rod is independently rotated, the heights of the two sides of the supporting piece are inconsistent, the expansion type interbody fusion cage can present taper, and the taper can be adjusted, so that the adaptability is strong.
2. The expansion type interbody fusion cage for the spine minimally invasive surgery is provided with an anti-slip mechanism, a four-corner wrench is used for rotating a rotating shaft, a first drill nail is driven by a worm gear and worm transmission mechanism to drill upwards into an upper-end vertebral joint, and a second drill nail is driven by a second drill nail to drill downwards into a lower-end vertebral joint, so that the expansion type interbody fusion cage is fixed and prevented from slipping.
Drawings
FIG. 1 is a schematic view of an inflatable interbody fusion cage for use in minimally invasive spinal procedures;
FIG. 2 is a schematic view of the internal structure of an inflatable interbody fusion cage for use in minimally invasive spinal surgery;
FIG. 3 is a schematic view of the structure of the support;
FIG. 4 is a schematic view of the structures of the first slider and the second slider;
fig. 5 is a schematic structural view of the support plate;
FIG. 6 is a schematic view of a first cross-sectional structure of the anti-slip mechanism;
FIG. 7 is a schematic view of a second cross-sectional structure of the anti-slip mechanism;
FIG. 8 is a schematic structural view of the housing;
FIG. 9 is a schematic view of the structure of the first drill nail;
fig. 10 is a schematic structural view of a second drill nail.
In the figure: the support plate 1, the support 2, the first trapezoid support block 3, the second trapezoid support block 4, the first C-shaped chute 5, the second C-shaped chute 6, the first positive and negative screw rod 7, the second positive and negative screw rod 8, the first sliding block 9, the second sliding block 10, the base block 11, the first connecting rod 12, the ball 13, the chute 14, the first hole 15, the pointed cone 16, the straight slot 17, the first round hole 18, the housing 19, the rotating shaft 20, the first round pin 21, the second round pin 22, the first round bit 23, the first threaded rod 24, the first hexagonal rod 25, the second round bit 26, the second threaded rod 27, the second hexagonal rod 28, the first cavity 29, the second cavity 30, the worm section 31, the first worm wheel 32, the first hexagonal hole 33, the first threaded hole 34, the third cavity 35, the second worm wheel 36, the second hexagonal hole 37, the second threaded hole 38, the second connecting rod 39, the second round hole 40, the inner quadrangular hole 41, and the second hole 42.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 10, the present embodiment provides an expansion-type interbody fusion cage for minimally invasive spinal surgery, comprising: two parallel support plates 1, an anti-slip mechanism arranged between the support plates 1, two opposite support pieces 2 arranged between the support plates 1, and a driving mechanism arranged between the support pieces 2 and used for lifting the support pieces 2; a first trapezoid supporting block 3 is arranged on one side of the bottom surface of the supporting piece 2, a second trapezoid supporting block 4 is arranged on the other side of the bottom surface of the supporting piece 2, a first C-shaped sliding groove 5 is arranged on the waist line of two sides of the first trapezoid supporting block 3, a second C-shaped sliding groove 6 is arranged on the waist line of two sides of the second trapezoid supporting block 4, and the inside of the first C-shaped sliding groove 5 and the inside of the second C-shaped sliding groove 6 are smooth, so that a sphere 13 can slide inside; the driving mechanism includes: the first positive and negative tooth screw rods 7 are arranged between the support plates 1 and between the first trapezoid support blocks 3, the second positive and negative tooth screw rods 8 are arranged between the support plates 1 and between the second trapezoid support blocks 4, the first sliding blocks 9 are arranged on the first positive and negative tooth screw rods 7 and move oppositely or oppositely, and the second sliding blocks 10 are arranged on the second positive and negative tooth screw rods 8 and move oppositely or oppositely; the first sliding block 9 and the second sliding block 10 have the same structure and comprise: the base body block 11 is in threaded fit with the first positive and negative screw rod 7 or the second positive and negative screw rod 8, the first connecting rod 12 is arranged at the upper end and the lower end of the base body block 11, the ball 13 is arranged at the tail end of the first connecting rod 12, the ball 13 slides in the first C-shaped chute 5 or the second C-shaped chute 6 and cannot be separated from the first C-shaped chute 5 or the second C-shaped chute 6. The first trapezoid supporting blocks 3 are oppositely arranged, the waist parts at two sides of the first trapezoid supporting blocks 3 are opposite to form a wedge-shaped space, the base body blocks 11 are driven by the first positive and negative tooth screw rods 7 to move oppositely or oppositely, and the spheres 13 at two ends slide in the first C-shaped sliding grooves 5 which are opposite up and down; the second trapezoid supporting blocks 4 are oppositely arranged, the waist parts at two sides of the second trapezoid supporting blocks 4 are oppositely formed into wedge-shaped spaces, the matrix blocks 11 are driven by the second positive and negative tooth screw rods 8 to oppositely or oppositely move, and the spheres 13 at two ends slide in the second C-shaped sliding grooves 6 which are opposite up and down; simultaneously, when the first positive and negative screw rod 7 and the second positive and negative screw rod 8 are rotated, the first sliding block 9 and the second sliding block 10 move relatively or oppositely, and the supporting piece 2 is lifted by being matched with conical spaces at two sides of the first trapezoidal supporting block 3 and the second trapezoidal supporting block 4, so that the height of the expansion type interbody fusion cage is increased or reduced; when the first positive and negative screw rod 7 or the second positive and negative screw rod 8 are independently rotated, the heights of the two sides of the supporting piece 2 are inconsistent, the expansion type interbody fusion cage presents taper, and the taper is adjustable and has strong adaptability. The ball 13 is of sliding articulated construction in the first C-shaped slide 5 or in the second C-shaped slide 6.
The base body block 11 is a square block, sliding grooves 14 are formed in two sides of the supporting plate 1, and the square block slides in the sliding grooves 14. This structure serves to keep the first slider 9 and the second slider 10 from deflecting on the first positive lead screw 7 and the second positive lead screw 8.
The support 2 is provided with a first hole 15 exposing the anti-slip mechanism. The first hole 15 allows the sliding mechanism to act on the upper and lower vertebral bodies through the first hole 15, and also exposes the inner space of the expansion type interbody fusion cage, so that interbody fusion is facilitated after bone grafting.
The outer bottom surface of the support member 2 is provided with a plurality of spikes 16. The pointed cone 16 contacts the upper and lower vertebral bodies and has a fixing function.
The two ends of the first positive and negative screw rod 7 and the second positive and negative screw rod 8 are provided with a straight slot 17, and the supporting plate 1 is provided with a first round hole 18 exposing the straight slot 17. The first positive and negative screw rod 7 and the second positive and negative screw rod 8 can be screwed by a straight screwdriver to adjust the taper and the height of the expansion type interbody fusion cage.
The anti-slip mechanism includes: the drilling device comprises a shell 19 arranged between the supporting plates 1, a rotating shaft 20 penetrating through the shell 19, a first drilling nail 21 arranged in the shell 19 and driven by the rotating shaft 20 to drill in an upward rotation mode, and a second drilling nail 22 arranged in the shell 19 and driven by the rotating shaft 20 to drill in a downward rotation mode. The first drill nail 21 comprises a first drill bit 23, a first threaded rod 24 arranged below the first drill bit 23, and a first hexagonal rod 25 arranged below the first threaded rod 24; the second drill nail 22 includes a second drill bit 26, a second threaded rod 27 disposed below the second drill bit 26, and a second hexagonal rod 28 disposed below the second threaded rod 27. The housing 19 is internally provided with a first cavity 29 positioned in the middle, a second cavity 30 positioned at one side of the first cavity 29, a second cavity 30 positioned at the other side of the first cavity 29, and the rotating shaft 20 is provided with a worm section 31 positioned in the first cavity 29; a first worm wheel 32 meshed with the worm section 31 is arranged in the second cavity 30, a first hexagonal hole 33 is formed in the center of the first worm wheel 32, a first threaded hole 34 leading to the outside of the first cavity 29 is formed in the upper end of the first cavity 29, the first hexagonal rod 25 is arranged in the first hexagonal hole 33, and the first threaded rod 24 is in threaded fit with the first threaded hole 34; the third cavity 35 is internally provided with a second worm wheel 36 meshed with the worm section 31, the center of the second worm wheel 36 is provided with a second hexagonal hole 37, the lower end of the second cavity 30 is provided with a second threaded hole 38 leading to the outside of the third cavity 35, the second hexagonal rod 28 is arranged in the second hexagonal hole 37, and the second threaded rod 27 is in threaded fit with the second threaded hole 38. Rotating the rotating shaft 20, driving the first worm wheel 32 to rotate by the worm section 31, driving the first hexagonal rod 25 to rotate by the first worm wheel 32, driving the first threaded rod 24 to rotate in the first threaded hole 34 by the first hexagonal rod 25, so that the first drill nail 21 is in a spiral ascending state, and enabling the first drill bit 23 to enter the cone above; simultaneously, the worm section 31 drives the second worm wheel 36 to rotate, the second worm wheel 36 drives the second hexagonal rod 28 to rotate, the second hexagonal rod 28 drives the second threaded rod 27 to rotate in the second threaded hole 38, so that the first drilling nail 21 is in a spiral ascending and descending state, and the second drill bit 26 drills into the cone below, so that the position of the expansion type interbody fusion cage in the horizontal direction is fixed.
The two sides of the shell 19 are provided with second connecting rods 39 connected with the supporting plate 1. The anti-slip mechanism is fixed to the support plate 1 and supports in the longitudinal direction.
The support plate 1 is provided with a second round hole 40 rotatably connected with the rotating shaft 20, and two ends of the rotating shaft 20 are provided with inner four-angle holes 41. The rotation shaft 20 is conveniently rotated by using a square wrench.
The support plate 1 is provided with second holes 42 positioned at two sides of the second round hole 40. The interior of the inflatable intersyramid fusion device may be filled with bone material through the second hole 42.
The invention relates to an expansion type interbody fusion cage applied to spine minimally invasive surgery, which is used when:
implanting an expansion pipe at the operation position in a lateral way, implanting an distractor, removing an intervertebral disc, implanting the expansion type interbody fusion cage, screwing a first positive and negative tooth screw rod 7 and a second positive and negative tooth screw rod 8 by using a straight screwdriver, adjusting the height and the taper of the expansion type interbody fusion cage, enabling a supporting piece 2 to be attached to an upper vertebral body and a lower vertebral body, rotating a rotating shaft 20 by using a four-angle wrench, enabling a first drilling nail 21 to drill into the upper vertebral body, enabling a second drilling nail 22 to drill into the lower vertebral body, and filling bone tissues into the inner space of the expansion type interbody fusion cage from a gap between a second hole 42 and the supporting piece 2; after the expansion tube is treated, the upper and lower vertebral bodies are fixed by using vertebral arch nails.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. An expansion type interbody fusion cage applied to minimally invasive spinal surgery, comprising: the device comprises two support plates (1) which are arranged in parallel, an anti-slip mechanism arranged between the support plates (1), two opposite support pieces (2) arranged between the support plates (1), and a driving mechanism arranged between the support pieces (2) and used for lifting the support pieces (2); one side of the bottom surface of the supporting piece (2) is provided with a first trapezoid supporting block (3), the other side of the bottom surface of the supporting piece (2) is provided with a second trapezoid supporting block (4), the waist lines on two sides of the first trapezoid supporting block (3) are provided with a first C-shaped chute (5), and the waist lines on two sides of the second trapezoid supporting block (4) are provided with a second C-shaped chute (6); the driving mechanism includes: the first positive and negative tooth screw rods (7) are arranged between the support plates (1) and between the first trapezoid support blocks (3), the second positive and negative tooth screw rods (8) are arranged between the support plates (1) and between the second trapezoid support blocks (4), the two first sliding blocks (9) are arranged on the first positive and negative tooth screw rods (7) and move oppositely or oppositely, and the two second sliding blocks (10) are arranged on the second positive and negative tooth screw rods (8) and move oppositely or oppositely; the first sliding block (9) and the second sliding block (10) are identical in structure and comprise: the base body block (11) is in threaded fit with the first positive and negative screw rod (7) or the second positive and negative screw rod (8), the first connecting rod (12) is arranged at the upper end and the lower end of the base body block (11), the ball body (13) is arranged at the tail end of the first connecting rod (12), and the ball body (13) slides in the first C-shaped sliding groove (5) or the second C-shaped sliding groove (6) and cannot deviate from the first C-shaped sliding groove (5) or the second C-shaped sliding groove (6).
2. An inflatable interbody fusion cage for minimally invasive spinal procedures as recited in claim 1, wherein: the support (2) is provided with a first hole (15) exposing the anti-slip mechanism.
3. An inflatable interbody fusion cage for use in minimally invasive spinal procedures as recited in claim 2, wherein: the outer bottom surface of the supporting piece (2) is provided with a plurality of pointed cones (16).
4. An inflatable interbody fusion cage for use in minimally invasive spinal procedures as recited in claim 3, wherein: the two ends of the first positive and negative screw rod (7) and the second positive and negative screw rod (8) are provided with a straight slot (17), and the supporting plate (1) is provided with a first round hole (18) exposing the straight slot (17).
5. An inflatable interbody fusion cage for use in minimally invasive spinal procedures of claim 1, wherein the anti-slip mechanism comprises: the casing (19) is arranged between the supporting plates (1), the rotating shaft (20) is arranged on the casing (19) in a penetrating manner, the first drilling nails (21) are arranged in the casing (19) and driven by the rotating shaft (20) to drill in an upward rotating mode, and the second drilling nails (22) are arranged in the casing (19) and driven by the rotating shaft (20) to drill in a downward rotating mode.
6. An inflatable interbody fusion cage for minimally invasive spinal procedures as recited in claim 5, wherein: the first drilling nail (21) comprises a first drill bit (23), a first threaded rod (24) arranged below the first drill bit (23), and a first hexagonal rod (25) arranged below the first threaded rod (24); the second drilling nail (22) comprises a second drill bit (26), a second threaded rod (27) arranged below the second drill bit (26), and a second hexagonal rod (28) arranged below the second threaded rod (27).
7. An inflatable interbody fusion cage for use in minimally invasive spinal procedures as recited in claim 6, wherein: a first cavity (29) positioned in the middle is arranged in the shell (19), a second cavity (30) positioned at one side of the first cavity (29), a second cavity (30) positioned at the other side of the first cavity (29), and a worm section (31) positioned in the first cavity (29) is arranged on the rotating shaft (20); a first worm wheel (32) meshed with the worm section (31) is arranged in the second cavity (30), a first hexagonal hole (33) is formed in the center of the first worm wheel (32), a first threaded hole (34) leading to the outside of the first cavity (29) is formed in the upper end of the first cavity (29), the first hexagonal rod (25) is arranged in the first hexagonal hole (33), and the first threaded rod (24) is in threaded fit with the first threaded hole (34); the third cavity (35) is internally provided with a second worm wheel (36) meshed with the worm section (31), the circle center of the second worm wheel (36) is provided with a second hexagonal hole (37), the lower end of the second cavity (30) is provided with a second threaded hole (38) leading to the outside of the third cavity (35), the second hexagonal rod (28) is arranged in the second hexagonal hole (37), and the second threaded rod (27) is in threaded fit with the second threaded hole (38).
8. An inflatable interbody fusion cage for use in minimally invasive spinal procedures as recited in claim 7, wherein: two sides of the shell (19) are provided with second connecting rods (39) connected with the supporting plate (1).
9. An inflatable interbody fusion cage for use in minimally invasive spinal procedures of claim 8, wherein: the support plate (1) is provided with a second round hole (40) which is rotationally connected with the rotating shaft (20), and two ends of the rotating shaft (20) are provided with inner four-angle holes (41).
10. An inflatable interbody fusion cage for use in minimally invasive spinal procedures as recited in claim 9, wherein: the support plate (1) is provided with second holes (42) positioned at two sides of the second round hole (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311727856.4A CN117717444A (en) | 2023-12-15 | 2023-12-15 | Expansion type interbody fusion cage applied to minimally invasive spine surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311727856.4A CN117717444A (en) | 2023-12-15 | 2023-12-15 | Expansion type interbody fusion cage applied to minimally invasive spine surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117717444A true CN117717444A (en) | 2024-03-19 |
Family
ID=90210103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311727856.4A Pending CN117717444A (en) | 2023-12-15 | 2023-12-15 | Expansion type interbody fusion cage applied to minimally invasive spine surgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117717444A (en) |
-
2023
- 2023-12-15 CN CN202311727856.4A patent/CN117717444A/en active Pending
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