CN116473732A - Intervertebral fusion device prosthesis - Google Patents
Intervertebral fusion device prosthesis Download PDFInfo
- Publication number
- CN116473732A CN116473732A CN202310697754.6A CN202310697754A CN116473732A CN 116473732 A CN116473732 A CN 116473732A CN 202310697754 A CN202310697754 A CN 202310697754A CN 116473732 A CN116473732 A CN 116473732A
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- CN
- China
- Prior art keywords
- hole
- section
- worm
- adjusting
- holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000004927 fusion Effects 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
- A61F2/446—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones
Abstract
The present invention provides an intervertebral cage prosthesis comprising: the shell comprises three adjusting holes which are perpendicular to the maximum section plane of the shell and are not on the same straight line and control holes which are respectively perpendicular to the adjusting holes and the axes of which are not intersected with the adjusting holes, and the adjusting holes are intersected with the edges of the control holes; the adjusting mechanism comprises three groups of worm and gear structures which are mutually perpendicular and staggered and an adjusting block which penetrates through the worm gear, and the worm and gear structures are respectively and rotatably arranged in the adjusting hole and the control hole; the end plate comprises a skirt edge and a blind hole, wherein the skirt edge wraps the outer wall of the shell, and is slidably covered on the shell. By applying the technical scheme of the invention, when the interbody fusion is performed, the height of the adjusting mechanism in the shell is operated to adjust, the height of the driving end plate is changed, and the interbody fusion device can be matched with the interbody heights of patients with different heights.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an intervertebral fusion cage prosthesis.
Background
The intervertebral fusion is a mature operation type for treating the degenerative diseases of the spine, has the advantages of high fusion rate, low complications and the like, and the intervertebral fusion device prosthesis is used for replacing pathological intervertebral discs in the operation, so that the original physiological function characteristics of the spine are recovered.
In the prior art, the intervertebral fusion device is provided with a plurality of models to meet patients with different intervertebral heights, but in the actual operation process, the problems of inaccurate measurement precision, incomplete stripping of affected parts, inadequately healthy bone, inadequately complete spare model of the prosthesis and the like still face, and the accurate matching of the intervertebral fusion device prosthesis is difficult to realize. Also, over time, secondary subsidence may occur after the cage prosthesis is placed so that a new cage procedure is required.
Aiming at the problems, the invention provides an intervertebral fusion device prosthesis, which is characterized in that the heights of the intervertebral fusion device prosthesis are respectively adjusted through three groups of adjusting mechanisms which are not on the same straight line, and the micro-difference of the intervertebral fusion device prosthesis is matched, so that more accurate intervertebral fusion operation replacement operation is realized; even if secondary sedimentation occurs after operation, the intervertebral fusion device prosthesis does not need to be replaced again, only the height adjustment is performed, and the pain and the operation cost of a patient are greatly reduced.
Disclosure of Invention
The present invention provides an intervertebral cage prosthesis comprising: the shell comprises three adjusting holes which are perpendicular to the maximum section plane of the shell and are not on the same straight line and control holes which are respectively perpendicular to the adjusting holes and the axes of which are not intersected with the adjusting holes, and the adjusting holes are intersected with the edges of the control holes; the adjusting mechanism comprises three groups of worm and gear structures which are mutually perpendicular and staggered and an adjusting block which penetrates through the worm gear, and the worm and gear structures are respectively and rotatably arranged in the adjusting hole and the control hole; the end plate comprises a skirt edge and a blind hole, wherein the skirt edge wraps the outer wall of the shell, and is slidably covered on the shell.
Further, the adjusting hole is provided with a first hole section, a second hole section, a third hole section and a fourth hole section, and the diameter of the first hole section is smaller than that of the second hole Duan Zhijing and smaller than that of the fourth hole section.
Further, the control hole is provided with a fifth hole section and a sixth hole section, and the diameter of the fifth hole section is smaller than that of the sixth hole section.
Further, the worm wheel is provided with internal threads matched with the adjusting block, an external gear matched with the worm is arranged, two ends of the external gear are provided with smooth first bearing parts, the first bearing parts are rotatably arranged on the second hole section, and the external gear is rotatably arranged on the fourth hole section.
Further, the worm is provided with a first external thread, both ends of the first external thread are provided with smooth second bearing parts, the outermost end of each second bearing part is provided with an operating part, each second bearing part is rotatably arranged on the fifth hole section, and the first external thread is rotatably arranged on the sixth hole section.
Further, the adjusting block comprises a ball head and a stud, the stud is provided with a second external thread matched with the internal thread of the worm wheel, and the stud is movably arranged in the worm wheel and the adjusting hole.
Further, the stud is provided with a rotation stopping gap, the first hole section is provided with a rotation stopping rib, and the rotation stopping rib is matched with the rotation stopping gap.
Further, the diameter of the sliding block is smaller than that of the blind hole, and the sliding block slides along the section of the blind hole and clings to the end plate.
Further, the slider is provided with a ball socket abutting the ball head.
Further, the three adjusting holes are arranged in a V shape, and the included angle is between 90 degrees and 120 degrees.
By applying the technical scheme of the invention, the intervertebral fusion device prosthesis comprises: the shell, the adjustment mechanism and the end plate are used for operating the adjustment mechanism in the shell to adjust the height when the interbody fusion is carried out, so that the height of the end plate is driven to change, and the height of the intervertebral of different heights of a patient can be matched.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 illustrates an exploded view of an intervertebral cage prosthesis provided according to an embodiment of the present invention;
FIG. 2 illustrates a rotational cross-sectional view of an intervertebral cage prosthesis provided according to an embodiment of the present invention;
FIG. 3 shows a rotational cross-section of the shell of the interbody cage prosthesis of FIG. 1;
FIG. 4 shows a top view of the inferior half of the shell of the interbody cage prosthesis of FIG. 1;
FIG. 5 shows a schematic view of the inferior half of the shell of the interbody cage prosthesis of FIG. 1;
FIG. 6 shows a schematic structural view of the semi-assembled cage prosthesis of FIG. 1;
FIG. 7 shows a schematic structural view of the endplates of the interbody cage prosthesis of FIG. 1;
FIG. 8 shows a schematic structural view of an adjustment block of the interbody cage prosthesis of FIG. 1;
FIG. 9 shows a cross-sectional view of an adjustment block of the interbody cage prosthesis of FIG. 1;
FIG. 10 shows a schematic view of the worm gear of the interbody cage prosthesis of FIG. 1;
FIG. 11 shows a cross-sectional view of a worm gear of the interbody cage prosthesis of FIG. 1;
FIG. 12 shows a schematic view of the worm of the interbody cage prosthesis of FIG. 1;
fig. 13 shows a cross-sectional view of the worm of the interbody cage prosthesis of fig. 1.
Wherein the above figures include the following reference numerals:
10. a housing; 11. an adjustment aperture; 111. a first bore section; 1111. a rotation stopping rib; 112. a second bore section; 113. a third bore section; 114. a fourth bore section; 12. a control hole; 121. a fifth bore section; 122. a sixth bore section;
20. an adjusting mechanism; 21. a worm wheel; 211. an internal thread; 212. an external gear; 213. a first rotation-receiving portion; 22. a worm; 221. a first external thread; 222. a second rotation-supporting part; 223. an operation unit; 23. an adjusting block; 231. ball head; 232. a stud; 2321. a second external thread; 2322. anti-rotation clearance;
30. an endplate; 31. a skirt edge; 32. a blind hole; 321. a slide block; 3211. a ball socket;
alpha, included angle.
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. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 13, the present invention provides an interbody cage prosthesis comprising: a housing 10 including three adjustment holes 11 perpendicular to a maximum sectional plane of the housing 10 and not on the same straight line and control holes 12 respectively perpendicular to the adjustment holes 11 but whose axes do not intersect the adjustment holes 11, the adjustment holes 11 intersecting edges of the control holes 12; the adjusting mechanism 20 comprises three groups of worm wheel 21 and worm 22 structures which are mutually perpendicular and staggered and an adjusting block 23 which penetrates through the worm wheel 21, and the worm wheel 21 and the worm 22 are respectively and rotatably arranged in the adjusting hole 11 and the control hole 12; the end plate 30 comprises a skirt 31 and a blind hole 32, wherein the skirt 31 wraps the outer wall of the shell 10 and is slidably covered on the shell 10, a sliding block 321 is further arranged, and the sliding block 321 is slidably arranged in the blind hole 32.
In this embodiment, for convenience of presentation, the housing 10 is divided into upper and lower parts along a plane in which the axis of the control hole 12 is located.
As shown in fig. 3, the adjustment hole 11 is provided with a first hole section 111, a second hole section 112, a third hole section 113, and a fourth hole section 114, and the diameter of the first hole section 111 is smaller than that of the second hole section 112 and smaller than that of the fourth hole section 114.
As shown in fig. 5, the control hole 12 is provided with a fifth hole section 121 and a sixth hole section 122, the fifth hole section 121 having a diameter smaller than the sixth hole section 122.
As shown in fig. 1 to 2, 6 and 10 to 11, the worm wheel 21 is provided with an internal thread 211 matched with the adjusting block 23, an external gear 212 matched with the worm 22, and smooth first bearing parts 213 arranged at two ends of the external gear 212, wherein the first bearing parts 213 are rotatably arranged at the second hole section 112 to ensure that the worm wheel 21 smoothly rotates in the adjusting hole 11 without deviation, and the external gear 212 is rotatably arranged at the fourth hole section 114.
As shown in fig. 1 to 2, 6 and 12 to 13, the worm 22 is provided with a first external thread 221, both ends of the first external thread 221 are provided with smooth second rotation-supporting parts 222, the outermost ends of the second rotation-supporting parts 222 are provided with operation parts 223, the second rotation-supporting parts 222 are rotatably arranged in the fifth hole section 121, smooth rotation of the worm 22 in the control hole 12 is ensured without deviation, and the first external thread 221 is rotatably arranged in the sixth hole section 122.
As shown in fig. 1 to 2, 6 and 8 to 9, the adjusting block 23 includes a ball 231 and a stud 232, and the stud 232 is provided with a second external thread 2321 which cooperates with the internal thread 211 of the worm wheel 21 and is movably disposed in the worm wheel 21 and the adjusting hole 11.
As shown in fig. 4 to 5 and 8 to 9, the stud 232 is provided with a rotation stopping gap 2322, the first hole section 111 is provided with a rotation stopping rib 1111, and the rotation stopping rib 1111 and the rotation stopping gap 2322 cooperate with each other to limit the movement of the adjusting block 23 along the axis thereof when driven by the worm wheel 21.
As shown in fig. 7, the diameter of the slider 321 is smaller than the diameter of the blind hole 32, and the slider 321 slides along the cross section of the blind hole 32 against the endplate 30.
As shown in fig. 7, the sliding block 321 is provided with a ball socket 3211 for abutting against the ball head 231, so that the contact area between the end plate 30 and the adjusting block 23 is increased, and real-time full contact is ensured; the edge of the end plate 30 is provided with a skirt 31 wrapping the outer wall of the shell 10 and slidably covering the shell 10 to form a sealed state inside, so that the end plate 30 cannot be suddenly separated from the shell 10 when the extrusion force is lost.
In particular, the skirt 31 is made of PE or XPE, and can undergo micro deformation, so that when the three sets of adjusting mechanisms 20 are independently adjusted, the end plate 30 and the housing 10 will not be parallel any more, and the skirt 31 undergoes micro deformation to ensure good sealing.
As shown in fig. 4, the three adjustment holes 11 are arranged in a V-shape with an included angle α of between 90 ° and 120 °.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intervertebral cage prosthesis, comprising:
a housing (10) comprising three adjustment holes (11) perpendicular to the maximum section plane of the housing (10) and not on the same straight line, and control holes (12) respectively perpendicular to the adjustment holes (11) but with axes not intersecting the adjustment holes (11), the adjustment holes (11) intersecting the edges of the control holes (12);
the adjusting mechanism (20) comprises three groups of worm wheel (21) and worm (22) structures which are vertically staggered and an adjusting block (23) which penetrates through the worm wheel (21), and the worm wheel (21) and worm (22) are respectively and rotatably arranged in the adjusting hole (11) and the control hole (12);
the end plate (30) comprises a skirt edge (31) and a blind hole (32), wherein the skirt edge (31) wraps the outer wall of the shell (10), the shell (10) is covered in a sliding mode, a sliding block (321) is further arranged, and the sliding block (321) is arranged in the blind hole (32) in a sliding mode.
2. An intervertebral cage prosthesis according to claim 1, characterized in that the adjustment aperture (11) is provided with a first aperture section (111), a second aperture section (112), a third aperture section (113), a fourth aperture section (114), the first aperture section (111) having a smaller diameter than the second aperture section (112) and a smaller diameter than the fourth aperture section (114).
3. An intervertebral cage prosthesis according to claim 1, characterized in that the control hole (12) is provided with a fifth hole section (121) and a sixth hole section (122), the fifth hole section (121) having a smaller diameter than the sixth hole section (122).
4. An intervertebral cage prosthesis according to claim 1, characterized in that the worm wheel (21) is provided with an internal thread (211) cooperating with the adjustment block (23), that an external gear (212) cooperating with the worm (22) is provided, that both ends of the external gear (212) are provided with smooth first bearing parts (213), that the first bearing parts (213) are rotatably arranged in the second hole section (112), and that the external gear (212) is rotatably arranged in the fourth hole section (114).
5. An intervertebral cage prosthesis according to claim 1, characterized in that the worm (22) is provided with a first external thread (221), both ends of the first external thread (221) are provided with smooth second bearing parts (222), the outermost ends of the second bearing parts (222) are provided with operating parts (223), the second bearing parts (222) are rotatably arranged in the fifth hole section (121), and the first external thread (221) is rotatably arranged in the sixth hole section (122).
6. An intervertebral cage prosthesis according to claim 1, characterized in that the adjustment block (23) comprises a ball head (231) and a stud (232), the stud (232) being provided with a second external thread (2321) which cooperates with the internal thread (211) of the worm wheel (21) and is movably arranged in the worm wheel (21) and the adjustment hole (11).
7. An intervertebral cage prosthesis according to claim 6, characterized in that the stud (232) is provided with a rotation-stopping gap (2322), the first hole section (111) is provided with a rotation-stopping rib (1111), and the rotation-stopping rib (1111) cooperates with the rotation-stopping gap (2322).
8. An intervertebral cage prosthesis according to claim 1, characterized in that the diameter of the slide (321) is smaller than the diameter of the blind hole (32), the slide (321) sliding along the cross section of the blind hole (32) against the end plate (30).
9. An intervertebral cage prosthesis according to claim 1, characterized in that the slider (321) is provided with a ball socket (3211) abutting the ball head (231).
10. An intervertebral fusion prosthesis according to claim 1, characterized in that the three adjustment holes (11) are arranged in a V-shape with an included angle (α) of between 90 ° and 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310697754.6A CN116473732A (en) | 2023-06-13 | 2023-06-13 | Intervertebral fusion device prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310697754.6A CN116473732A (en) | 2023-06-13 | 2023-06-13 | Intervertebral fusion device prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116473732A true CN116473732A (en) | 2023-07-25 |
Family
ID=87223461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310697754.6A Pending CN116473732A (en) | 2023-06-13 | 2023-06-13 | Intervertebral fusion device prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116473732A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060136062A1 (en) * | 2004-12-17 | 2006-06-22 | Dinello Alexandre | Height-and angle-adjustable motion disc implant |
| US20070093901A1 (en) * | 2005-09-26 | 2007-04-26 | Thomas Grotz | Selectively Expanding Spine Cage, Hydraulically Controllable in Three Dimensions for Enhanced Spinal Fusion |
| US20150094814A1 (en) * | 2012-04-16 | 2015-04-02 | Biomet Spine, Llc | Multiple spindle adjustable interbody fusion devices and methods of use |
| WO2015079011A1 (en) * | 2013-11-28 | 2015-06-04 | Humantech Germany Gmbh | Vertebral body replacement implant having a worm gear |
| CN110934672A (en) * | 2019-10-09 | 2020-03-31 | 承德医学院附属医院 | Interbody fusion cage and implant |
| CN114699227A (en) * | 2022-06-08 | 2022-07-05 | 北京理贝尔生物工程研究所有限公司 | Vertebral body prosthesis |
| CN115414161A (en) * | 2022-09-14 | 2022-12-02 | 赵全明 | Spinal interbody fusion cage and implantation matching device thereof |
-
2023
- 2023-06-13 CN CN202310697754.6A patent/CN116473732A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060136062A1 (en) * | 2004-12-17 | 2006-06-22 | Dinello Alexandre | Height-and angle-adjustable motion disc implant |
| US20070093901A1 (en) * | 2005-09-26 | 2007-04-26 | Thomas Grotz | Selectively Expanding Spine Cage, Hydraulically Controllable in Three Dimensions for Enhanced Spinal Fusion |
| US20150094814A1 (en) * | 2012-04-16 | 2015-04-02 | Biomet Spine, Llc | Multiple spindle adjustable interbody fusion devices and methods of use |
| WO2015079011A1 (en) * | 2013-11-28 | 2015-06-04 | Humantech Germany Gmbh | Vertebral body replacement implant having a worm gear |
| CN110934672A (en) * | 2019-10-09 | 2020-03-31 | 承德医学院附属医院 | Interbody fusion cage and implant |
| CN114699227A (en) * | 2022-06-08 | 2022-07-05 | 北京理贝尔生物工程研究所有限公司 | Vertebral body prosthesis |
| CN115414161A (en) * | 2022-09-14 | 2022-12-02 | 赵全明 | Spinal interbody fusion cage and implantation matching device thereof |
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