CN106388982A - Interbody fusion cage - Google Patents
Interbody fusion cage Download PDFInfo
- Publication number
- CN106388982A CN106388982A CN201611073333.2A CN201611073333A CN106388982A CN 106388982 A CN106388982 A CN 106388982A CN 201611073333 A CN201611073333 A CN 201611073333A CN 106388982 A CN106388982 A CN 106388982A
- Authority
- CN
- China
- Prior art keywords
- supporting part
- fusion device
- main body
- support portion
- invasive lumbar
- 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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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
- 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
- A61F2/4465—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 kidney shaped cross-section substantially perpendicular to the axis of the spine
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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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
Abstract
The invention relates to an interbody fusion cage. The interbody fusion cage comprises a fusion cage main body, and the fusion cage main body comprises an upper support portion, a lower support portion and a middle support portion connected between the upper support portion and the lower support portion; a buffer groove is formed between the upper support portion and the lower support portion, and a flexible insert for playing a support role when the upper support portion and the lower support portion are subjected to vertical extrusion force to deform is inlaid into the buffer groove. According to the interbody fusion cage, the flexible insert is inlaid into the buffer groove and can play a certain support role when the upper support portion and the lower support portion are subjected to vertical extrusion force to deform, ensures that the upper support portion and the lower support portion cannot lose the deformation buffer function, improves the integral strength of the fusion cage and achieves the subsidence resisting and displacement preventing effects.
Description
Technical field
The present invention relates to a kind of Invasive lumbar fusion device.
Background technology
For the invalid Patients with Cervical Spondylopathy of expectant treatment, method popular at present is bone graft fusion, due to bone grafting
Fusion easily causes for bone area pain, is therefore gradually fused device and substitutes.
A kind of imitative intervertebral disc spinal fusion as disclosed in the Chinese invention patent application of Application No. 201410838729.6
Device, this fusion device includes upright ring-shaped cylinder support, i.e. fusion device main body, and the bosom of fusion device main body is in hollow, shape
Become a bone graft area, fusion device body interior fills up sandwich layer.After the implantation of this fusion device, in vertebra, osteoblast can be in support inner core
Under induction, enter internal stent and attach and rise in value, and then form osseous tissue, induction bone tissue restoration regeneration, realize interbody bone and melt
Close.
Above-mentioned fusion device body design circularizes cylindrical-shaped structure although having the advantages that intensity height and good stability, but
Be this fusion device main body elastic buffer ability poor.When the vertebral body activity of people, between adjacent two vertebral bodys can be to two vertebral bodys
Fusion device main body produce load, because this fusion device body elastic buffer capacity is poor, it is dumb to easily cause joint motion,
Cause fusion device body interior stress concentration simultaneously, in turn result in the generation of the complication such as sinking, displacement, and accelerate adjacent segment
Regression.
Chinese invention patent application as Application No. 201110049494.9 discloses one kind and has flexible intervertebral
Fusion device, wherein in an embodiment, as shown in figure 1, this fusion device includes the skeleton 2 of ellipse, i.e. fusion device main body, tool
There is hollow hollow section.The section of this fusion device main body is in " work " font, and it includes the first supporting part arranging one on the other
12 and second supporting part 14, first, second supporting part is substantially made up of the plate spring structure of the closed section with U-shaped, and
One supporting part and the second supporting part are the resilient elastic of tool.Alleviate to vertebra above-below direction effect load, first,
It is attached by intermediate supports portion between second elastic.From figure 1 it appears that the downside of the first elastic and the second elasticity
There is between the upside in portion opening dashpot outwardly, be the first elastic and the second elastic offer deformable buffering
Space.
Although this fusion device has preferable elastic buffer ability, due to the peripheral edge portion of first, second elastic
It is in vacantly unsupported state, the peripheral edge portion by the first elastic and the second elastic during upper and lower squeezing action deforms
And close to each other, under the squeezing action repeatedly of upper hypocentrum, the dashpot between easy two elastic portion is more and more narrower, causes
The peripheral edge portion of the first elastic and the second elastic, towards dashpot inter collapse, equally easily causes fusion device and sinks and shift
Generation etc. complication.
Content of the invention
It is an object of the invention to provide a kind of Invasive lumbar fusion device, in order to solve under in prior art, Invasive lumbar fusion device is easy
The heavy, technical problem of displacement.
For achieving the above object, a kind of technical scheme of Invasive lumbar fusion device of the present invention is：
A kind of Invasive lumbar fusion device, including fusion device main body, fusion device main body includes supporting part, lower supporting part and is connected to
Intermediate supports portion between supporting part and lower supporting part, has dashpot between upper supporting part and lower supporting part, and dashpot embeds
Be provided with upper supporting part and lower supporting part because of the flexibility played a supporting role when being deformed by above-below direction extruding force
Inserts.
The cross section of fusion device main body is in " work " font, and described dashpot is around the circumferentially extending annular of fusion device main body
Groove, described inserts is annular insert.
Upper supporting part and lower supporting part are annular, and intermediate supports portion is to be coaxially disposed with upper supporting part and lower supporting part
Hollow cylinder, hollow space within the circular hole at upper supporting part and lower supporting part center and intermediate supports portion forms and runs through
The bone grafting hole of fusion device main body.
Described upper supporting part and lower supporting part are solid plate structure.
The upper side of upper supporting part is plane, and the downside of lower supporting part is plane.
Fusion device main body is titanium alloy fusion device main body.
Described inserts is polyurethane inserts.
The invention has the beneficial effects as follows：The Invasive lumbar fusion device of the present invention includes supporting part and lower supporting part, upper supporting part
It is attached by intermediate supports portion and lower supporting part between, between upper supporting part and lower supporting part, there is dashpot, dashpot
For the space of upper supporting part and lower support offer deformable buffering, buffering load along the vertical direction, not only increase joint spirit
Activity, reduces the stress concentration within fusion device simultaneously.It is embedded the inserts of flexibility in dashpot, flexible inserts can be upper
When supporting part and lower supporting part deform because of above-below direction extruding force, play certain supporting role, the upper supporting part of guarantee simultaneously,
Lower supporting part will not lose the function of deformation buffer, improves the bulk strength of fusion device, play opposing and sink and prevent displacement
Effect.
Brief description
Fig. 1 is a kind of sectional view of Invasive lumbar fusion device in background technology；
Fig. 2 is a kind of overall structure diagram of present invention Invasive lumbar fusion device embodiment 1；
Fig. 3 is the structural representation of fusion device main body in Fig. 2；
Fig. 4 is the structural representation of inserts in Fig. 2；
Fig. 5 is the structural representation of bone grafting in Fig. 2；
Fig. 6 is a kind of schematic cross-section of present invention Invasive lumbar fusion device embodiment 2；
Fig. 7 is a kind of schematic cross-section of present invention Invasive lumbar fusion device embodiment 3；
Fig. 8 is a kind of schematic cross-section of present invention Invasive lumbar fusion device embodiment 4.
Specific embodiment
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
A kind of specific embodiment 1 of Invasive lumbar fusion device of the present invention, as shown in Figures 2 to 5, this Invasive lumbar fusion device includes melting
Clutch main body 1 and flexible inserts 2, fusion device main body 1 is different with the material of inserts 2, and fusion device main body 1 is titanium alloy fusion device
Main body, inserts 2 is polyurethane inserts.Fusion device main body 1 includes supporting part 11, lower supporting part 12 and is connected to supporting part
Intermediate supports portion 13 and lower supporting part between, has dashpot between the upside of the downside of upper supporting part 11 and lower supporting part 12
14, inserts 2 is embedded in dashpot 14, and upper and lower supporting part is played a supporting role, and realizes the work that opposing is sunk and prevented displacement
With.Preferably, the cross section of fusion device main body 1 is " work " font, and dashpot 14 is around the circumferentially extending annular of fusion device main body
Groove, inserts 2 is circular.Upper supporting part 11 and lower supporting part 12 are annular, and upper supporting part and lower supporting part are reality
Body platy structure.Intermediate supports portion 13 is the cylinder of hollow, and upper supporting part 11, intermediate supports portion 13 and lower supporting part 12 are coaxial
Setting, upper supporting part 11 and the lower circular hole at supporting part 12 center and the middle part in intermediate supports portion are internally formed and run through fusion up and down
The bone grafting hole 15 of device main body, is filled with bone grafting 3 in bone grafting hole 15 and is compacted, bone grafting 3 is taken from and human body spongy bone springform
Measure feature identical allograft cancellous bone.Inserts 2 has the lateral surface of arc and the upper surface of medial surface and planar structure
And lower surface, the upper surface of inserts 2 closely bonded with the downside of upper supporting part 11, the lower surface of inserts 2 and lower supporting part 12
Upper side closely bond so that inserts 2 is seamlessly connected with fusion device main body, the arc external side of inserts 2 and upper supporting part, under
The arc external side radius of supporting part is equal and aligns.
In the present embodiment, the upper side of upper supporting part 11 is planar structure, and the downside of lower supporting part 12 is planar structure,
When fusion device is implanted, between upper hypocentrum, junction steel plate carries out spacing, the prevention vertebral foramen to vertebra for the soft device to fusion device
Position is moved and is touched the blood vessel in vertebral foramen and nerve.In other embodiments, the upper side of upper supporting part 11 and lower supporting part 12
Downside can also be indent curved surface, it is convex that the downside of the upside of upper supporting part and lower supporting part can also arrange zigzag
Rise, prevent fusion device body from moving.
A kind of specific embodiment 2 of the Invasive lumbar fusion device of the present invention, as different from Example 1：The arc in intermediate supports portion
Shape lateral surface is provided with the annular flange flange 16 radially extending, the arc external side of annular flange flange 16 and upper supporting part and lower support
The arc external side radius in portion is equal, and the dashpot one between upper supporting part 11 and lower supporting part 12 is divided into by annular flange flange 16
Two, two dashpots, along the axially spaced-apart distribution in intermediate supports portion, are all embedded with the inserts 2 of annular in each dashpot.Embedding
The shape of part 2 is identical with the inserts shape in embodiment 1.
A kind of specific embodiment 3 of the Invasive lumbar fusion device of the present invention, as different from Example 1：The arc in intermediate supports portion
Shape lateral surface is provided with the annular flange flange 16 radially extending, the arc external side radius of annular flange flange 16 be less than upper supporting part and
The radius of the arc external side of lower supporting part, such annular flange flange 16 is located at the inside of dashpot.Inserts 2 is annular, inserts 2
Medial wall on offer the groove matching with annular flange flange 16, the cross section of inserts 2 is in U shape, and annular flange flange embeds
In groove.
A kind of specific embodiment 4 of the Invasive lumbar fusion device of the present invention, as different from Example 3：The arc in intermediate supports portion
Axially spaced on shape lateral surface be provided with two annular flange flange 16, axially spaced on the medial wall of inserts 2 be provided with two
Groove, each annular flange flange is respectively embedded in corresponding groove.
In other embodiments, inserts can also be made up of other flexible biomedical materials.Upper supporting part and lower
Support part can not be solid tabular, can also be U-shaped annular plate spring structure for cross section.Upper supporting part and lower supporting part are also
Can be oval or large semi-circular or rectangle, intermediate supports portion can also be the cube rod of hollow, or vertical
Platy structure, offers perforation, for bone grafting inside vertical plate.When middle supporting part be vertical plate-like when, upper supporting part and under
Dashpot between supporting part is not cannelure, and dashpot is the straight trough being symmetricly set on vertical plate both sides, and inserts is block
Inserts.
Claims (7)
1. a kind of Invasive lumbar fusion device, including fusion device main body, fusion device main body includes supporting part, lower supporting part and is connected to
Intermediate supports portion between upper supporting part and lower supporting part, has dashpot between upper supporting part and lower supporting part, its feature exists
In：It is embedded with dashpot for propping up because playing when being deformed by above-below direction extruding force in upper supporting part and lower supporting part
The inserts of the flexibility of support effect.
2. Invasive lumbar fusion device according to claim 1 it is characterised in that：The cross section of fusion device main body is in " work " font,
Described dashpot is around the circumferentially extending cannelure of fusion device main body, and described inserts is annular insert.
3. Invasive lumbar fusion device according to claim 2 it is characterised in that：Upper supporting part and lower supporting part are annular,
Intermediate supports portion is the cylinder of the hollow being coaxially disposed with upper supporting part and lower supporting part, upper supporting part and lower supporting part center
Hollow space within circular hole and intermediate supports portion forms the bone grafting hole running through fusion device main body.
4. the Invasive lumbar fusion device according to claim 1-3 any one it is characterised in that：Described upper supporting part and lower support
Portion is solid plate structure.
5. the Invasive lumbar fusion device according to claim 1-3 any one it is characterised in that：The upper side of upper supporting part is flat
Face, the downside of lower supporting part is plane.
6. the Invasive lumbar fusion device according to claim 1-3 any one it is characterised in that：Fusion device main body is melted for titanium alloy
Clutch main body.
7. the Invasive lumbar fusion device according to claim 1-3 any one it is characterised in that：Described inserts is that polyurethane is embedding
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073333.2A CN106388982B (en) | 2016-11-29 | 2016-11-29 | A kind of Invasive lumbar fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073333.2A CN106388982B (en) | 2016-11-29 | 2016-11-29 | A kind of Invasive lumbar fusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106388982A true CN106388982A (en) | 2017-02-15 |
| CN106388982B CN106388982B (en) | 2018-10-26 |
Family
ID=58084175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611073333.2A Active CN106388982B (en) | 2016-11-29 | 2016-11-29 | A kind of Invasive lumbar fusion device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106388982B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113040981A (en) * | 2021-02-08 | 2021-06-29 | 中山大学肿瘤防治中心（中山大学附属肿瘤医院、中山大学肿瘤研究所） | Polyether-ether-ketone artificial vertebral body |
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| CN113040981A (en) * | 2021-02-08 | 2021-06-29 | 中山大学肿瘤防治中心（中山大学附属肿瘤医院、中山大学肿瘤研究所） | Polyether-ether-ketone artificial vertebral body |
| CN113040981B (en) * | 2021-02-08 | 2022-07-05 | 中山大学肿瘤防治中心（中山大学附属肿瘤医院、中山大学肿瘤研究所） | Polyether-ether-ketone artificial vertebral body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106388982B (en) | 2018-10-26 |
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Application publication date: 20170215 Assignee: Luoyang Sanse Technology Co., Ltd Assignor: Henan University of Science and Technology Contract record no.: X2019980000434 Denomination of invention: Interbody fusion cage Granted publication date: 20181026 License type: Common License Record date: 20191101 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170215 Assignee: Henan luobida Intelligent Technology Co., Ltd Assignor: HENAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2020980008135 Denomination of invention: A kind of interbody fusion cage Granted publication date: 20181026 License type: Common License Record date: 20201118 |