CN202908883U - Lumbar interbody fusion cage with adjustable angle - Google Patents
Lumbar interbody fusion cage with adjustable angle Download PDFInfo
- Publication number
- CN202908883U CN202908883U CN2012204389195U CN201220438919U CN202908883U CN 202908883 U CN202908883 U CN 202908883U CN 2012204389195 U CN2012204389195 U CN 2012204389195U CN 201220438919 U CN201220438919 U CN 201220438919U CN 202908883 U CN202908883 U CN 202908883U
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- fusion device
- angle
- substructure
- superstructure
- lumbar vertebra
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- 230000004927 fusion Effects 0.000 title claims abstract description 84
- 230000017531 blood circulation Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract 1
- 210000000988 bone and bone Anatomy 0.000 description 11
- 238000002513 implantation Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002054 transplantation Methods 0.000 description 2
- 208000020307 Spinal disease Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 230000001900 immune effect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000578 peripheral nerve Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
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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 utility model discloses a lumbar interbody fusion cage with an adjustable angle. The lumbar interbody fusion cage comprises an upper structure and a lower structure which are symmetrically arranged, movably connected through a cake-like substance and fixed through fixing elements. The lumbar interbody fusion cage is reasonable in design, adjustable in angle and capable of being fixed after well debugging of angles so that stability of the fusion cage is enhanced; the lumbar interbody fusion cage can be implanted on lumbar interbody under the assistance of a tool, can be well fixed on the lumbar interbody, is difficult to slip off and dislocate and can adapt to differences of inherent opening angles of lumbosacral vertebrae interbody of different persons; and the lumbar interbody fusion cage can induce fusion of the lumbar interbody in certain time and has extensive clinical significances.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly, relates to a kind of angle adjustable, to adapt to the inter vertebral fusing device of the intrinsic subtended angle diversity of different people waist 5/ sacrum, 1 intervertebral space.
Background technology
Lumbar spinal fusion is one of important method for the treatment of spinal disease, and annual increasing crowd accepts the treatment of interbody fusion.Interbody fusion comprises autologous bone transplanting and allogenic bone transplantation, because limited from body bone source, increase for district's wound, can not provide the shortcoming such as instant mechanically stable so that the clinical practice of interbody fusion is restricted; And allogenic bone transplantation not only expense is high, limited amount, and the virus disseminating and the immunologic rejection that are caused by allograph bone also are to affect it in the main cause of wide clinical application.In recent years, for improving the bone implantation rate, reduce outer fixedly dependency, improve and keep the curvature of spinal column, Invasive lumbar fusion device (Cage) arises at the historic moment.The more cylindric autologous ilium of Invasive lumbar fusion device has stronger stability, can effectively keep the spinal column Anterior stability, keep disc height, meet the heavy burden requirement of spinal column, patient is ambulation in early days, and numerous clinical research report Invasive lumbar fusion devices have positive role for improving bone fusion rate and Short Term Clinical curative effect.
At present, the shape of fusion device does not have intrinsic inclination angle or angle can't be debugged between lumbar vertebra commonly used, causes can not guaranteeing to fit tightly with the surface of bone of neighbouring vertebral body, and the possibility that causes the fusion device sedimentation to enter vertebral body is arranged, and the risk that has increased the fusion device displacement and do not merged, have a strong impact on operative effect.Simultaneously, the recovery of lumbosacral angle is the important guarantee of keeping the spinal column Sagittal balance, if reset according to the intervertebral space that resets of the Invasive lumbar fusion device of present application for increasing binding face in the operation, lumbosacral angle is significantly reduced, and affects the balance of whole trunk.And the intrinsic subtended angle size of waist sacrum can vary with each individual, and therefore, needs clinically a kind of lumbar fusion cages of energy adjusting angle, adapts to the waist sacrum subtended angle that different people has by debugging, and more stable implantation intervertebral promotes that Lumbar Fusion resets.
The utility model content
The purpose of this utility model is not have intrinsic inclination angle or the uncontrollable problem of angle in order to solve lumbar fusion cages now commonly used, provide a kind of angle can regulate the lumbar fusion cages of variation, the implantation waist sacrum intervertebral of energy stable matching, and the difference of the intrinsic subtended angle of adaptation different people waist sacrum intervertebral.
In order to achieve the above object, this utility model provides fusion device between the adjustable lumbar vertebra of a kind of angle, this fusion device comprises: symmetrically arranged superstructure and substructure, this superstructure and substructure are flexibly connected by cake, and fix by retaining element.
Fusion device between the lumbar vertebra that above-mentioned angle is adjustable, wherein, described cake comprises two symmetrical half cakes that separate, and this two and half cake is fixed as one with superstructure and substructure respectively.
Fusion device between the lumbar vertebra that above-mentioned angle is adjustable, wherein, described cake is a round pie integral body, and one-body molded with superstructure or substructure.
Fusion device between the lumbar vertebra that above-mentioned angle is adjustable, wherein, described retaining element refers to screw, the two sides relative with substructure in superstructure is provided with screw thread, fixes by screw.
Fusion device between the lumbar vertebra that above-mentioned angle is adjustable, wherein, the periphery of this fusion device is provided with some blood circulation holes.
Fusion device between the lumbar vertebra that above-mentioned angle is adjustable, wherein, the outside of described superstructure and substructure is provided with the peak shape detent projection.
Fusion device between the lumbar vertebra that above-mentioned angle is adjustable, wherein, the sidepiece of described superstructure and substructure all has radiused edges.
Fusion device between the lumbar vertebra that above-mentioned angle is adjustable, wherein, the front and back of described superstructure and substructure is provided with overhead structure.
Fusion device between the lumbar vertebra that above-mentioned angle is adjustable, wherein, hollow out in the described fusion body.
Fusion device between the lumbar vertebra that this utility model provides is flexibly connected superstructure and substructure by cake so that superstructure or/and substructure around this cake rotation, thereby reach the purpose that can change angle.
Fusion device is reasonable in design between the lumbar vertebra that this utility model provides, and angle is adjustable, can fix after angle is debugged, and strengthens the stability of fusion device; Can implant intervertebral at the auxiliary lower of instrument, and well be fixed on intervertebral, be difficult for skidding off dislocation, and adapt to the difference of the intrinsic subtended angle of different people waist sacrum intervertebral; And can induce within a certain period of time the fusion between lumbar vertebra, have widely clinical meaning.
Description of drawings
Fig. 1 is the front section view of I type fusion device of the present utility model.
Fig. 2 a is the side sectional view that does not change angle of I type fusion device of the present utility model; Fig. 2 b is the side sectional view of the change angle of I type fusion device of the present utility model.
Fig. 3 is the top view of I type fusion device of the present utility model.
Fig. 4 is the front section view of II type fusion device of the present utility model.
Fig. 5 a is the side sectional view that does not change angle of II type fusion device of the present utility model; Fig. 5 b is the side sectional view of the change angle of II type fusion device of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, in detail the specific embodiment of the present utility model is further described.
Embodiment 1 I type fusion device
As shown in Figure 1, a kind of I type fusion device provided by the utility model, this fusion device profile is the rectangle of long 20 ~ 30mm * wide 10 ~ 12mm * high 5 ~ 6mm.This fusion device is divided into symmetrical superstructure 11 and substructure 12, this superstructure 11 and substructure 12 form cake 20 by the middle part that patty is connected to this fusion device, shown in Fig. 2 a, this superstructure 11 and substructure 12 can be around these cake 20 rotations, shown in Fig. 2 b, for this changes the side view of the fusion device of angle, thereby reach the purpose that changes angle.These cake 20 circle internal diameters are preferably 5-7mm, and the thickness of this cake 20 is preferably 2-3mm.This superstructure 11 and substructure 12 all are designed with screw thread 30, and this diameter of thread is preferably 2-3mm, can be screwed into the screw 31 fixing angles that mixed up, as shown in Figure 3.The periphery of this fusion device (being the periphery of superstructure 11 and substructure 12) also is designed with blood circulation hole 40, and this hole diameter is preferably 2mm, is beneficial to growing into of new vessels, promotes the vertebra fusion efficiencies.The outside of this superstructure 11 and substructure 12 is provided with peak shape detent projection 50, in case stop bit moves.(being in the body of superstructure 11 and substructure 12) hollow out is convenient to hold bone cips in this fusion body, has also increased the contact area of plant bone mass and soleplate simultaneously.The front and back of this fusion device is provided with the overhead structure (not shown), and this agnail height is preferably 1-2mm.The sidepiece of this fusion device (being the sidepiece of superstructure 11 and substructure 12) has radiused edges 60, shown in Fig. 2 a, 2b, to avoid fusion device implanted damage peripheral nerve and soft tissue.
Embodiment 2 II type fusion devices
As shown in Figure 4, be a kind of II type fusion device provided by the utility model, this fusion device is the improvement that carry out on the basis of I type fusion device in embodiment 1.Cake 20 in this II type fusion device is one-body molded with superstructure 11, has improved the stability of fusion device, guarantees that fusion device is fixed between lumbar vertebra more muchly, is difficult for landing.Other structures of this II type fusion device are identical with the fusion device of example I type, and the side view of varied angle is not shown in Fig. 5 a for it, and its side view that changes angle is shown in 5b.
Among embodiment more of the present utility model, this cake 20 is one-body molded with substructure 12.
Among embodiment more of the present utility model, the making material of fusion device selects to have the material of good biocompatibility, and the fusion device that makes is long-term existence and do not cause the health untoward reaction in vivo; Have good bone inducibility, can induce within a certain period of time the fusion between lumbar vertebra.
Fusion device between the lumbar vertebra that this utility model provides, simple in structure, angle is adjustable, and the implantation waist sacrum intervertebral of energy stable matching, and the difference of the intrinsic subtended angle of adaptation different people waist sacrum intervertebral have widely clinical meaning.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (8)
1. fusion device between the adjustable lumbar vertebra of an angle, it is characterized in that, this fusion device comprises: symmetrically arranged superstructure (11) and substructure (12), and this superstructure (11) is flexibly connected by cake (20) with substructure (12), and fixes by retaining element; Described cake (20) comprises two symmetrical half cakes that separate, and this two and half cake is fixed as one with superstructure (11), substructure (12) respectively.
2. fusion device between the adjustable lumbar vertebra of angle as claimed in claim 1 is characterized in that, described cake (20) is a round pie integral body, and one-body molded with superstructure or substructure.
3. fusion device between the adjustable lumbar vertebra of angle as claimed in claim 1 or 2, it is characterized in that, described retaining element refers to screw (31), and the two sides relative with substructure (12) in superstructure (11) is provided with screw thread (30), and is fixing by screw (31).
4. fusion device between the adjustable lumbar vertebra of angle as claimed in claim 1 or 2 is characterized in that, the periphery of this fusion device is provided with some blood circulation holes (40).
5. fusion device between the adjustable lumbar vertebra of angle as claimed in claim 1 or 2 is characterized in that, the outside of described superstructure (11) and substructure (12) is provided with peak shape detent projection (50).
6. fusion device between the adjustable lumbar vertebra of angle as claimed in claim 1 or 2 is characterized in that, the sidepiece of described superstructure (11) and substructure (12) all has radiused edges (60).
7. fusion device between the adjustable lumbar vertebra of angle as claimed in claim 1 or 2 is characterized in that, the front and back of described superstructure (11) and substructure (12) is provided with overhead structure.
8. fusion device between the adjustable lumbar vertebra of angle as claimed in claim 1 or 2 is characterized in that, hollow out in the described fusion body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204389195U CN202908883U (en) | 2012-08-31 | 2012-08-31 | Lumbar interbody fusion cage with adjustable angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204389195U CN202908883U (en) | 2012-08-31 | 2012-08-31 | Lumbar interbody fusion cage with adjustable angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202908883U true CN202908883U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204389195U Expired - Fee Related CN202908883U (en) | 2012-08-31 | 2012-08-31 | Lumbar interbody fusion cage with adjustable angle |
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| Country | Link |
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| CN (1) | CN202908883U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105287059A (en) * | 2014-07-30 | 2016-02-03 | 上海祥尧医疗器械有限公司 | Interbody fusion cage and implantation device thereof |
| CN105997311A (en) * | 2016-06-30 | 2016-10-12 | 李照文 | Adjustable interbody fusion device |
| CN106943212A (en) * | 2016-11-30 | 2017-07-14 | 重庆润泽医药有限公司 | A kind of steady type Invasive lumbar fusion device |
| WO2021258546A1 (en) * | 2020-06-24 | 2021-12-30 | 四川大学华西医院 | Assembled cervical vertebra and uncovertebral joint fusion cage |
| CN114081688A (en) * | 2021-11-12 | 2022-02-25 | 四川大学华西医院 | A fusion and non-fusion adjustable intelligent spinal intervertebral implant |
-
2012
- 2012-08-31 CN CN2012204389195U patent/CN202908883U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105287059A (en) * | 2014-07-30 | 2016-02-03 | 上海祥尧医疗器械有限公司 | Interbody fusion cage and implantation device thereof |
| CN105997311A (en) * | 2016-06-30 | 2016-10-12 | 李照文 | Adjustable interbody fusion device |
| CN106943212A (en) * | 2016-11-30 | 2017-07-14 | 重庆润泽医药有限公司 | A kind of steady type Invasive lumbar fusion device |
| WO2021258546A1 (en) * | 2020-06-24 | 2021-12-30 | 四川大学华西医院 | Assembled cervical vertebra and uncovertebral joint fusion cage |
| CN114081688A (en) * | 2021-11-12 | 2022-02-25 | 四川大学华西医院 | A fusion and non-fusion adjustable intelligent spinal intervertebral implant |
| CN114081688B (en) * | 2021-11-12 | 2023-08-01 | 四川大学华西医院 | A fusion and non-fusion adjustable intelligent spinal intervertebral implant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20130831 |