CN103720527B - A kind of joint fusion cage - Google Patents
A kind of joint fusion cage Download PDFInfo
- Publication number
- CN103720527B CN103720527B CN201410038103.7A CN201410038103A CN103720527B CN 103720527 B CN103720527 B CN 103720527B CN 201410038103 A CN201410038103 A CN 201410038103A CN 103720527 B CN103720527 B CN 103720527B
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- China
- Prior art keywords
- hole
- tray
- alar part
- fusion cage
- joint fusion
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Classifications
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- 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
-
- 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
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a kind of joint fusion cage, comprise tray and lock-screw, described tray is a wedge, described tray is provided with one or more fusion hole, and described lock-screw is used for fixing described tray.Tray of the present invention is arranged and merges hole, conveniently can insert spongy bone or grow into for the sclerotin that implant site is adjacent, thus realizing the fusion of bone and implant, once operation realizes fixing and merges, and adopt wedge structure, make spongy bone compression chord, be beneficial to fusion.
Description
Technical field
The present invention relates to joint fusion field, in especially merging with extensive region pivot Lateral mass joint, the structure of implant is relevant.
Background technology
Atlantoaxial dislocation (atlantoaxialdislocation, AD) refer to that the joint between the first segment (atlas) of cervical vertebra, second section (dentata) loses normal relationship in a mutual action, thus cause oblongata, upper cervical compression of spinal cord, vertebral artery trend and hemodynamic responses; Light then occur dizzy or faint, quadriplegia, even respiratory failure can be caused under serious conditions and dead.Due to its disable, fatality rate is high, atlantoaxial dislocation is worldwide one of the focus and difficult point of spinal surgery research.
Articulatio atlantoepistrophica fusion is the most effectual way of the treatment atlantoaxial dislocation of generally acknowledging at present.Articulatio atlantoepistrophica Posterior interbody fusion exposes convenient and working place is large, and clinical practice is wider.This operation method comprises internal fixtion and bone-graft fusion two contents.Internal fixtion refers to and adopts internal fixation device to comprise steel wire, interlaminar clamp, pedicle screw and nail-plate (or rod).Bone-graft fusion refers to by posterior approach bone grafting between atlas (C1) cantle and dentata (C2) vertebral plate.The key criterion of this successful surgery is " whether bone grafting merge ".The apparatus research and development of articulatio atlantoepistrophica fusion all the time round " fixing, merge " these two targets.Report with since the steel wire articulatio atlantoepistrophica fusion method that colligation is fixing between atlas and axis cantle from nineteen thirty-nine Gallie, through the clinical practice of more than 60 years, update, atlas and axis Internal fixation technology has had significant progress, has occurred the technology such as C1, C2 interarticular screw, way of escape C1-C2 nail-plate, C1-C2 nail rod.After above-mentioned internal fixtion, then implement bone grafting operation (adopting bone-graft fusion between way of escape extensive region, dentata plate).
There is following shortcoming in above-mentioned technology:
1, operating procedure is many.This operation method needs could implement after atlas and axis completes internal fixtion.Can the bone that complete articulatio atlantoepistrophica merge, and whether the internal fixation operation depending on early stage is to a great extent strong.
2, biomechanics is undesirable.Bone grafting part in bone-graft fusion, rear plant bone mass or bone grafting grain bear the tensile stress of biomechanics, and tensile stress is unfavorable for merging (contrary, compressive stress promotes that bone merges); The bone grafting distance simultaneously needed, creeping substitution distance, the bone grafting amount of needs is large (getting ilium district complication to increase);
3, special case cannot complete.When Lu Zhui district bone sex deviation or arch of posterior atlas lack as (such as grow lack as or excision after), just cannot complete this operation.
Summary of the invention
For problems of the prior art, object of the present invention for provide a kind of can by means of only fixing fusion and the joint fusion cage merging that Biological Strength learns well of once having performed the operation.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of joint fusion cage, comprise tray and lock-screw, described tray is a wedge, described tray is provided with one or more fusion hole, and described lock-screw is used for fixing described tray.
Further, also comprise alar part, in the form of sheets, connect the side, bottom being arranged on described tray, the section together with described tray is L-type to described alar part, and described tray and described alar part are provided with for the through hole through described lock-screw.
Further, described alar part is the lamellar body of uniform thickness, and bottom is arc.
Further, described alar part connects the bottom being arranged on the thicker one side of described tray, and comprises the two panels that two tops link together.
Further, the described thicker one side of described tray is provided with upward the first through hole through upper proximal surface, the described two panels of described alar part is provided with the second through hole.
Further, described first through hole and described second through hole are unthreaded hole.
Further, described alar part and described tray are integrally formed, and the lateral surface of described alar part is concordant with the described thicker one side of described tray.
Further, described tray is also provided with and holds hole, described holding hole is positioned in the described thicker one side of described tray.
Further, described fusion Kong Weiyi macropore, the upper and lower surface of described tray is run through in described fusion hole.
Further, described tray adopts 3D printing technique to make.
The present invention compared with prior art, tray of the present invention is arranged and merges hole, conveniently can insert spongy bone or grow into for the sclerotin that implant site is adjacent, thus realize the fusion of bone and implant, once operation realizes fixing and merges, and adopt wedge structure, make spongy bone compression chord, be beneficial to fusion.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is the structural representation of joint fusion cage of the present invention;
Fig. 2 is the using state schematic diagram of joint fusion cage of the present invention.
Detailed description of the invention
The exemplary embodiments embodying feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various changes in different embodiments, it neither departs from the scope of the present invention, and explanation wherein and accompanying drawing are the use when explain in itself, and is not used to limit the present invention.
Joint fusion cage of the present invention is used for extensive region pivot Lateral mass joint and merges, and also can be applicable to the joint fusion at other close positions of structure.As shown in Figure 1, joint fusion cage of the present invention comprises tray 1, alar part 2 and lock-screw 3,4.The orientation such as upper and lower described in the application is that when standing according to human body after the present invention is applied to human body, residing position is determined.The specification of this fusion device is by height 4mm to 10mm, and the preoperative CT scan according to patient is measured, and carries out 3D printing according to actual Lateral mass joint gap length.
Tray 1 is a wedge, basic is hexahedron structure (six faces can be plane or curved surface), the cross section of tray 1 in two orthogonal vertical planes is respectively trapezoidal and rectangle certain limit of (this trapezoidal and rectangle or be curve), and upper and lower surface is fitted respectively needs two fixing osseous parts.When tray 1 is between the pivot lateral mass of implant into body extensive region, thicker one side 11 is positioned at front portion (relative to human body front), and thinner one side 12 is positioned at rear portion (relative to the human body back side).Usually, the height of thicker one side 11 is 6-8 millimeter, and thinner one side 11 is highly 4-6 millimeter, width 12 millimeter of tray 1, length 15 millimeter.
Tray 1 is provided with one or more fusion hole 14, can spongy bone be inserted in this fusion hole 14, also can be emptying aperture, determine according to actual needs.In the present embodiment, merging hole 14 is a macropore, merges the upper and lower surface that tray 1 is run through in hole 14.
The thicker one side 11 of tray 1 is provided with upward the first through hole 13 through upper proximal surface, this first through hole 13 is unthreaded hole (also can be set to screwed hole as required).In the present embodiment, the first through hole 13 is two, and for passing screw 3, joint fusion cage of the present invention be fixed on atlas 5, as shown in Figure 2, the first through hole 13 is tiltedly worn angle and determined as required.The setting of the first through hole 13 can ensure completing smoothly of special case.When Lu Zhui district bone sex deviation or arch of posterior atlas lack as (such as grow lack as or excision after), just cannot complete this operation if do not arranged this first through hole 13.Diameter 3 millimeters selected usually by this screw 3, the specification that length is 14 millimeters.
Tray 1 is also provided with and holds hole 15, hold hole 15 and be positioned in the thicker one side 11 of tray 1, namely with the entrance of the first through hole 13 on same operating surface, be convenient to carry out holding operation to fusion device.In the present embodiment, this holding hole 15 has cross structure.
In the form of sheets, connect the side, bottom being arranged on tray 1, the longitudinal profile together with tray 1 is L-type to alar part 2.Alar part 2 connects the bottom being arranged on the thicker one side 11 of tray 1, and alar part 2 and tray 1 are integrally formed, and the lateral surface of alar part 2 is concordant with the thicker one side 11 of tray 1.This alar part 2 can be that a slice is overall, also can be set up two panels separately, in the present embodiment for being divided into the two panels 21,22 that top is connected, so that flexible installing.
Alar part 2 is provided with the second through hole 23, second through hole 23 to be positioned at below the first through hole 13.This second through hole 23 is unthreaded hole (also can be set to screwed hole as required), and quantity is two (every a slice 21,22 arranges a hole 23), and for passing screw 4, joint fusion cage of the present invention is fixed on the vertebral body of dentata 6 by screw 4.Diameter 3 millimeters selected usually by this screw 4, the specification that length is 10 millimeters.
Joint fusion cage of the present invention adopts 3D printing technique to make, and namely adopts titanium metal powder as raw material by EBM(ElectronBeamMelting electron beam melting) technology makes 3D product.The key step making spinal column implants of 3D printing technique comprises: the spinal column implants model data input EBM Special Equipment 1, will designed; 2, titanium alloy powder is injected EBM Special Equipment; 3, EBM Special Equipment is started, finished product needed for the 3D print routine output.The 3D printed product adopting EBM technology to make has three important speciality with desirable spinal column implants close association: one is the object that can make special shape, any complex figure that computer design goes out all can be printed as material object through Special Equipment is disposable, and this speciality makes making meet spinal anatomy or the implants that meets individual characteristic becomes a reality; It two is the short-term training of production, can obtain required implants, make the customization of individual spinal column implants become possibility in several hours; Its three holes gap, this hole can be grown into for the sclerotin that implant site is adjacent, thus realizes the fusion of bone and implants.Electron beam melting technology produces the titanium alloy expanded metal bone implant material (being called for short TTM) that metallic particles heap cast becomes, all very close to nature bone trabecularism in structure and mechanical characteristic.Material average void size is about 650um, porosity 40% ~ 95%, and pressure-proof elasticity modulus is 0.5 ~ 1.3Gpa, between spongy bone and cortical bone, has excellent bio-compatibility and mechanical characteristic, and has very high friction stability with bone.Therefore as bone implant material, TTM can provide structural support to osseous tissue, and meet physiological stress distribution, there is no stress shielding, what at internal mutual, its column structure was connected that the honeycombed structure that formed makes that sclerotin can be quick, firm grows into, implant when there is no autologous or allograph bone tissue or bone grafting quantity not sufficient also can reach Bony union effect fast, and avoid the complication that bone collection brings.
The present invention has the following advantages: 1, disposablely complete internal fixtion and bone-graft fusion, simplifies operating procedure, i.e. stable, the long-term postoperative joint fusion of immediate postoperative.2, the mechanical environment of good bone-graft fusion is created.The bone grafting amount needed is few, does not need extensively expose and peel off muscle and vertebral plate, greatly reduces operation wound.3, the design uses 3D to print, and flexible design, meets individual characteristic.4, the fixed form of the first through hole 13 make when Lu Zhui district bone sex deviation or arch of posterior atlas lack as also can perform the operation, can treat in the past without surgical engine can patient.5, the hole that 3D printing technique provides can be grown into for the sclerotin that implant site is adjacent, thus realizes the fusion of bone and implants.That can cancel autologous ilium gets osseous surgery, avoids the complication in Qu Gu district.
Technical scheme of the present invention is disclosed as above by preferred embodiment.The change that those skilled in the art do when should recognize the scope and spirit of the present invention disclosed in the claim do not departed from appended by the present invention and retouching, within the protection domain all belonging to claim of the present invention.
Claims (7)
1. a joint fusion cage, merge for extensive region pivot Lateral mass joint, it is characterized in that, comprise tray, alar part and multiple lock-screw, described tray is a wedge, described tray is provided with and merges hole, described fusion Kong Weiyi macropore, the upper and lower surface of described tray is run through in described fusion hole, the thicker one side of described tray is provided with upward the first through hole through upper proximal surface, through a described lock-screw in each described first through hole, described alar part in the form of sheets, connect the side, bottom being arranged on described tray, section together with described tray is L-type, described alar part is provided with the second through hole, in multiple described lock-screw, other lock-screws connect dentata through described second through hole.
2. joint fusion cage as claimed in claim 1, it is characterized in that, described alar part is the lamellar body of uniform thickness, and bottom is arc.
3. joint fusion cage as claimed in claim 1, is characterized in that, described alar part connects the bottom being arranged on the thicker one side of described tray, and comprises the two panels that two tops link together.
4. joint fusion cage as claimed in claim 1, it is characterized in that, described first through hole and described second through hole are unthreaded hole.
5. joint fusion cage as claimed in claim 3, it is characterized in that, described alar part and described tray are integrally formed, and the lateral surface of described alar part is concordant with the described thicker one side of described tray.
6. joint fusion cage as claimed in claim 3, is characterized in that, described tray is also provided with and holds hole, described holding hole is positioned in the described thicker one side of described tray.
7. joint fusion cage as claimed in claim 1, is characterized in that, described tray adopts 3D printing technique to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410038103.7A CN103720527B (en) | 2014-01-26 | 2014-01-26 | A kind of joint fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410038103.7A CN103720527B (en) | 2014-01-26 | 2014-01-26 | A kind of joint fusion cage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103720527A CN103720527A (en) | 2014-04-16 |
| CN103720527B true CN103720527B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410038103.7A Expired - Fee Related CN103720527B (en) | 2014-01-26 | 2014-01-26 | A kind of joint fusion cage |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104000674B (en) * | 2014-06-10 | 2016-03-09 | 张衣北 | Tool pliability trabecular bone structure Invasive lumbar fusion device |
| CN105147417A (en) * | 2015-06-24 | 2015-12-16 | 中国人民解放军第四军医大学 | Bone grafting stent for acetabular osteotomy reconstruction |
| CN105853032B (en) * | 2016-06-06 | 2017-12-01 | 陆宁 | Axis replacement |
| CN108143523B (en) * | 2017-12-22 | 2024-01-23 | 北京大学第三医院 | Atlantoaxial lateral mass joint fixing fusion device |
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| CN101610741A (en) * | 2006-11-29 | 2009-12-23 | 外科技术有限公司 | Orthopaedic implants and prosthese |
| CN202342236U (en) * | 2011-10-24 | 2012-07-25 | 北京爱康宜诚医疗器材股份有限公司 | Fusion prosthesis |
| CN202589631U (en) * | 2012-05-16 | 2012-12-12 | 廖文胜 | Peroral atlantoaxial lateral mass joint fixing/fusing device |
| CN102860888A (en) * | 2012-09-07 | 2013-01-09 | 中山大学附属第三医院 | Integral lumbar intervertebral titanium plate fusion apparatus |
| CN103494657A (en) * | 2013-08-15 | 2014-01-08 | 刘官喜生 | Fusion cage |
| CN203790085U (en) * | 2014-01-26 | 2014-08-27 | 北京大学第三医院 | Joint fusion device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020169507A1 (en) * | 2000-12-14 | 2002-11-14 | David Malone | Interbody spine fusion cage |
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2014
- 2014-01-26 CN CN201410038103.7A patent/CN103720527B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2936182Y (en) * | 2005-12-13 | 2007-08-22 | 赵定麟 | Barb type intervertebral fusion device with vertebral steel plate capable of opening regulation |
| CN2875347Y (en) * | 2006-02-28 | 2007-03-07 | 孔琦 | Cervical vertebrae front steel plate fusion device |
| CN101610741A (en) * | 2006-11-29 | 2009-12-23 | 外科技术有限公司 | Orthopaedic implants and prosthese |
| CN201244104Y (en) * | 2008-06-27 | 2009-05-27 | 常州奥斯迈医疗器械有限公司 | Intervertebral fusion device for locking anterior lumbar interbody |
| CN201346235Y (en) * | 2008-12-31 | 2009-11-18 | 曾腾辉 | Intervertebral merging machine |
| CN202342236U (en) * | 2011-10-24 | 2012-07-25 | 北京爱康宜诚医疗器材股份有限公司 | Fusion prosthesis |
| CN202589631U (en) * | 2012-05-16 | 2012-12-12 | 廖文胜 | Peroral atlantoaxial lateral mass joint fixing/fusing device |
| CN102860888A (en) * | 2012-09-07 | 2013-01-09 | 中山大学附属第三医院 | Integral lumbar intervertebral titanium plate fusion apparatus |
| CN103494657A (en) * | 2013-08-15 | 2014-01-08 | 刘官喜生 | Fusion cage |
| CN203790085U (en) * | 2014-01-26 | 2014-08-27 | 北京大学第三医院 | Joint fusion device |
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| CN103720527A (en) | 2014-04-16 |
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