CN116492117B - Self-locking type interbody fusion cage - Google Patents
Self-locking type interbody fusion cage Download PDFInfo
- Publication number
- CN116492117B CN116492117B CN202310764325.6A CN202310764325A CN116492117B CN 116492117 B CN116492117 B CN 116492117B CN 202310764325 A CN202310764325 A CN 202310764325A CN 116492117 B CN116492117 B CN 116492117B
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- Prior art keywords
- locking
- hole
- driving
- interbody fusion
- self
- 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.)
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- 230000004927 fusion Effects 0.000 title claims abstract description 31
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 239000007769 metal material Substances 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
- 239000007787 solid Substances 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
- A61F2/447—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 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
Abstract
The application provides a self-locking interbody fusion cage, comprising: the shell is provided with a locking hole and a driving hole which are perpendicular to each other but are not intersected, the locking hole is perpendicular to the sagittal plane of the shell, and the driving hole is perpendicular to the cross section of the shell; the locking plate comprises a stretching element, a feeding element and a locking element, wherein the feeding element and the locking element are mutually connected, the feeding element is slidably arranged in the locking hole, and the locking element is movably arranged at the left side and the right side of the shell; the end plate is provided with a rack perpendicular to the cross section of the end plate, the rack is slidably arranged in the driving hole, and the end plate is movably arranged on the upper side and the lower side of the shell; the driving shaft is provided with a gear section in the middle part, a first thread section and a second thread section with opposite spiral lines at the two ends, and the driving shaft is rotatably arranged in the locking hole. By applying the technical scheme of the application, the automatic locking of the interbody fusion cage can be realized when the interbody fusion is performed, and the operation time and the operation flow in the operation are reduced.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a self-locking type interbody fusion cage.
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, according to whether the interior of the interbody fusion cage is hollow or not, the interbody fusion cage is divided into three types of closed interbody fusion cage, open interbody fusion cage and porous interbody fusion cage, and most of the closed interbody fusion cage is a solid structure with or without surface coating made of metal materials, and the biting force is increased by means of self surface tooth burst, or the stability is increased by means of a nail rod system/a nail plate system. The problems of long operation time, complex operation and the like exist.
Aiming at the problems, the application provides a self-locking interbody fusion cage, which is characterized in that an end plate is extruded by means of tensile force of upper and lower interbody ligaments to drive an inner shaft piece to draw a locking plate to draw towards the middle, so that the upper and lower interbody fusion cage is locked, the automatic locking of the interbody fusion cage is completed, and the operation time and the operation flow in an operation are reduced.
Disclosure of Invention
The application provides a self-locking interbody fusion cage, comprising: the shell is provided with a locking hole and a driving hole which are perpendicular to each other but are not intersected, the locking hole is perpendicular to the sagittal plane of the shell, and the driving hole is perpendicular to the cross section of the shell; the locking plate comprises a stretching element, a feeding element and a locking element, wherein the feeding element and the locking element are mutually connected, the feeding element is slidably arranged in the locking hole and provided with an initial position and a feeding position, and the locking element is movably arranged at the left side and the right side of the shell and provided with the initial position and the locking position; the end plate is provided with a rack perpendicular to the cross section of the end plate, the rack is slidably arranged in the driving hole, and the end plate is movably arranged on the upper side and the lower side of the shell and is provided with an initial position and a driving position; the driving shaft is provided with a gear section in the middle part, a first thread section and a second thread section with opposite spiral lines at the two ends, and the driving shaft is rotatably arranged in the locking hole and matched with the feeding element.
Further, the locking hole is provided with a first rib plate, the first rib plate is arranged parallel to the axis of the locking hole, the driving hole is provided with a second rib plate, and the second rib plate is arranged parallel to the axis of the driving hole.
Further, an internal thread is arranged in the feeding element, the rotation direction of the internal thread is the same as that of the first thread section or the second thread section of the driving shaft, a first guide rail is arranged outside the feeding element, the first guide rail is parallel to the axis of the locking hole, and the first guide rail is mutually engaged with the first rib plate and can mutually slide.
Further, locking parts are arranged at the upper end and the lower end of the locking element, the locking parts point to the shell from the locking plates, and the section of the locking parts is gradually reduced.
Further, the locking element is provided with a limiting protrusion, and when the locking element is in an initial position, the limiting protrusion abuts against the side wall of the end plate.
Further, limiting grooves are formed in the junction of the top surface of the end plate and the side wall, when the end plate is located at the driving position, the limiting grooves are clamped with limiting protrusions, and the locking element is changed from the initial position to the locking position.
Further, the rack is provided with a second guide rail, and the second guide rail is arranged parallel to the axis of the driving hole, is mutually matched with the second rib plate and can mutually slide.
Further, the shell is also provided with a guide hole parallel to the axis of the driving hole, the end plate is provided with a guide post perpendicular to the cross section of the end plate, and the guide post is in plug-in fit with the guide hole.
By applying the technical scheme of the application, the self-locking interbody fusion cage comprises: the device comprises a shell, locking plates, end plates and a driving shaft, wherein when the intervertebral fusion operation is carried out, when the end plates are subjected to extrusion forces of upper and lower vertebral bodies, the initial positions are changed to the driving positions, the feeding elements are driven to be changed to the feeding positions from the initial positions by virtue of meshing of racks and the driving shaft, and then the locking elements are changed to the locking positions from the initial positions by virtue of the stretching elements, so that the upper and lower vertebral bodies are locked, the intervertebral fusion device obtains good early stability, the operation flow is simplified, and the operation time is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 illustrates an exploded view of a self-locking interbody cage provided in accordance with an embodiment of the present application;
FIG. 2 illustrates an assembly view of a self-locking interbody cage provided in accordance with an embodiment of the present application;
FIG. 3 shows a schematic structural view of the housing of the self-locking interbody cage of FIG. 1;
FIG. 4 shows a schematic structural view of a locking tab of the self-locking interbody fusion cage of FIG. 1;
FIG. 5 illustrates a schematic structural view of the endplate of the self-locking interbody cage of FIG. 1;
fig. 6 shows a schematic structural view of a drive shaft of the self-locking interbody fusion cage of fig. 1.
Wherein the above figures include the following reference numerals:
10. a housing; 11. a locking hole; 111. a first rib; 12. a drive hole; 121. a second rib; 13. a guide hole;
20. a locking plate; 21. a feed member; 211. an internal thread; 212. a first guide rail; 22. a stretching element; 23. a locking element; 231. a locking part; 232. a limit protrusion;
30. an endplate; 31. a rack; 311. a second guide rail; 32. a guide post; 33. a limit groove;
40. a drive shaft; 41. a gear segment; 42. a first thread segment; 43. a second thread segment.
Detailed Description
The following description of the embodiments of the present application 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 application, 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 application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As shown in fig. 1 to 6, the present application provides a self-locking interbody cage, comprising: a housing 10 provided with a locking hole 11 and a driving hole 12 perpendicular to each other but not intersecting each other, the locking hole 11 being perpendicular to a sagittal plane of the housing 10, the driving hole 12 being perpendicular to a transverse plane of the housing 10; the locking piece 20, including a stretching element 22, and a feeding element 21 and a locking element 23, wherein the stretching element 22 is connected with each other, the feeding element 21 is slidably arranged in the locking hole 11 and has an initial position and a feeding position, and the locking element 23 is movably arranged at the left side and the right side of the shell 10 and has an initial position and a locking position; an end plate 30 provided with a rack 31 perpendicular to the cross section of the end plate 30, wherein the rack 31 is slidably arranged in the driving hole 12, and the end plate 30 is movably arranged on the upper side and the lower side of the shell 10 and has an initial position and a driving position; a drive shaft 40, provided with a gear section 41 in the middle and a first thread section 42 and a second thread section 43 with opposite spiral threads, is rotatably arranged in the locking hole 11, and cooperates with the feed element 21.
In the present embodiment, for convenience of presentation, the housing 10 is divided into upper and lower portions along a plane in which the axis of the locking hole 11 is located.
As shown in fig. 2 to 3, the locking hole 11 is provided with a first rib 111, the first rib 111 is disposed parallel to the axis of the locking hole 11, the driving hole 12 is provided with a second rib 121, and the second rib 121 is disposed parallel to the axis of the driving hole 12.
As shown in fig. 2 and 4, the feeding member 21 is internally provided with an internal thread 211, the internal thread 211 has the same rotation direction as the first thread section 42 or the second thread section 43 of the driving shaft 40, the feeding member 21 is externally provided with a first guide rail 212, and the first guide rail 212 is disposed parallel to the axis of the locking hole 11, and is engaged with and slidable relative to the first rib 111.
As shown in fig. 2 and 4, the locking element 23 is provided with locking parts 231 at the upper and lower ends, and the locking parts 231 are directed to the housing 10 from the locking plate 20, and the cross section is gradually reduced.
As shown in fig. 2 and 4, the locking element 23 is provided with a limit protrusion 232, and when the locking element 23 is in the initial position, the limit protrusion 232 abuts against the side wall of the end plate 30.
As shown in fig. 2 and 5, a limit groove 33 is disposed at the junction between the top surface and the side wall of the end plate 30, and when the end plate 30 is in the driving position, the limit groove 33 is clamped with the limit protrusion 232, and the locking element 23 is changed from the initial position to the locking position.
As shown in fig. 5, the rack 31 is provided with a second rail 311, and the second rail 311 is disposed parallel to the axis of the driving hole 12, and is engaged with and slidable relative to the second rib 121.
As shown in fig. 2 to 3, the housing 10 is further provided with a guide hole 13 parallel to the axis of the drive hole 12, the end plate 30 is provided with a guide post 32 perpendicular to the cross section of the end plate 30, and the guide post 32 is in plug-in fit with the guide hole 13.
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 exemplary embodiments according to 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 application.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. A self-locking interbody fusion cage, comprising:
a housing (10) provided with a locking hole (11) and a driving hole (12) which are perpendicular to each other but do not intersect, wherein the locking hole (11) is perpendicular to the sagittal plane of the housing (10), and the driving hole (12) is perpendicular to the transverse plane of the housing (10);
the locking plate (20) comprises a stretching element (22), a feeding element (21) and a locking element (23), wherein the feeding element (21) and the locking element (23) are mutually connected, the feeding element (21) is slidably arranged in the locking hole (11) and provided with an initial position and a feeding position, and the locking element (23) is movably arranged on the left side and the right side of the shell (10) and provided with the initial position and the locking position; the inside of the feeding element (21) is provided with an internal thread (211), the rotation direction of the internal thread (211) is the same as that of the first thread section (42) or the second thread section (43) of the driving shaft (40), the outside of the feeding element (21) is provided with a first guide rail (212), and the first guide rail (212) is parallel to the axis of the locking hole (11), is mutually matched with the first rib plate (111) and can mutually slide;
the end plate (30) is provided with a rack (31) perpendicular to the cross section of the end plate (30), the rack (31) is slidably arranged in the driving hole (12), and the end plate (30) is movably arranged on the upper side and the lower side of the shell (10) and has an initial position and a driving position;
the driving shaft (40) is provided with a gear section (41) at the middle part and a first thread section (42) and a second thread section (43) which are opposite in spiral line rotation directions at the two ends, and the driving shaft (40) is rotatably arranged in the locking hole (11) and matched with the feeding element (21).
2. A self-locking interbody fusion cage according to claim 1, characterized in that the locking hole (11) is provided with a first rib (111), the first rib (111) being arranged parallel to the axis of the locking hole (11), the driving hole (12) being provided with a second rib (121), the second rib (121) being arranged parallel to the axis of the driving hole (12).
3. The self-locking interbody fusion cage according to claim 1, wherein the locking element (23) has locking portions (231) at upper and lower ends, the locking portions (231) being directed from the locking plate (20) to the housing (10) and having a gradually decreasing cross section.
4. The self-locking interbody fusion cage according to claim 1, wherein the locking element (23) is provided with a limit protrusion (232), the limit protrusion (232) abutting against the endplate (30) side wall when the locking element (23) is in the initial position.
5. The self-locking interbody fusion cage according to claim 1, wherein a limit groove (33) is formed at a junction between the top surface and the side wall of the end plate (30), and when the end plate (30) is in the driving position, the limit groove (33) is clamped with the limit protrusion (232), and the locking element (23) is changed from the initial position to the locking position.
6. The self-locking interbody fusion cage according to claim 5, wherein the rack (31) is provided with a second guide rail (311), the second guide rail (311) being arranged parallel to the axis of the driving hole (12), being mutually engaged and slidable with the second rib (121).
7. A self-locking interbody fusion cage according to claim 1, characterized in that the housing (10) is further provided with a guide hole (13) parallel to the axis of the driving hole (12), the endplate (30) is provided with a guide post (32) perpendicular to the cross section of the endplate (30), and the guide post (32) is in plug-in fit with the guide hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310764325.6A CN116492117B (en) | 2023-06-27 | 2023-06-27 | Self-locking type interbody fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310764325.6A CN116492117B (en) | 2023-06-27 | 2023-06-27 | Self-locking type interbody fusion cage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116492117A CN116492117A (en) | 2023-07-28 |
| CN116492117B true CN116492117B (en) | 2023-09-22 |
Family
ID=87320591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310764325.6A Active CN116492117B (en) | 2023-06-27 | 2023-06-27 | Self-locking type interbody fusion cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116492117B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1722993A (en) * | 2002-08-15 | 2006-01-18 | 新特斯(美国)公司 | Controlled artificial intervertebral disc implant |
| CN101715323A (en) * | 2007-06-22 | 2010-05-26 | 西普瑞卡-斯宾尼公司 | Methods and devices for controlled flexion restriction of spinal segments |
| CN101909550A (en) * | 2007-11-02 | 2010-12-08 | 兰克斯股份有限公司 | Spinal implants and methods |
| CN108498210A (en) * | 2018-03-28 | 2018-09-07 | 上海锐植医疗器械有限公司 | A kind of adjustable fusion device of height |
| US10702312B1 (en) * | 2015-07-27 | 2020-07-07 | Joseph D Maresh | Spinal stabilization apparatus |
| CN112402072A (en) * | 2020-11-17 | 2021-02-26 | 李成 | Intervertebral disc prosthesis feeding type thread fixing device and fixing method thereof |
| CN116138936A (en) * | 2023-04-18 | 2023-05-23 | 北京爱康宜诚医疗器材有限公司 | Intervertebral fusion prosthesis and intervertebral fusion prosthesis assembly |
-
2023
- 2023-06-27 CN CN202310764325.6A patent/CN116492117B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1722993A (en) * | 2002-08-15 | 2006-01-18 | 新特斯(美国)公司 | Controlled artificial intervertebral disc implant |
| CN101715323A (en) * | 2007-06-22 | 2010-05-26 | 西普瑞卡-斯宾尼公司 | Methods and devices for controlled flexion restriction of spinal segments |
| CN101909550A (en) * | 2007-11-02 | 2010-12-08 | 兰克斯股份有限公司 | Spinal implants and methods |
| US10702312B1 (en) * | 2015-07-27 | 2020-07-07 | Joseph D Maresh | Spinal stabilization apparatus |
| CN108498210A (en) * | 2018-03-28 | 2018-09-07 | 上海锐植医疗器械有限公司 | A kind of adjustable fusion device of height |
| CN112402072A (en) * | 2020-11-17 | 2021-02-26 | 李成 | Intervertebral disc prosthesis feeding type thread fixing device and fixing method thereof |
| CN116138936A (en) * | 2023-04-18 | 2023-05-23 | 北京爱康宜诚医疗器材有限公司 | Intervertebral fusion prosthesis and intervertebral fusion prosthesis assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116492117A (en) | 2023-07-28 |
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