CN208974223U - Threaded fusion cage - Google Patents
Threaded fusion cage Download PDFInfo
- Publication number
- CN208974223U CN208974223U CN201721725086.XU CN201721725086U CN208974223U CN 208974223 U CN208974223 U CN 208974223U CN 201721725086 U CN201721725086 U CN 201721725086U CN 208974223 U CN208974223 U CN 208974223U
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- China
- Prior art keywords
- expandable tubular
- column
- notch
- fusion cage
- extension
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- Expired - Fee Related
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- 230000004927 fusion Effects 0.000 title claims abstract description 42
- 230000008961 swelling Effects 0.000 claims abstract description 19
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims 1
- 230000035876 healing Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 210000000988 bone and bone Anatomy 0.000 description 6
- 238000002513 implantation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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Abstract
The utility model relates to a kind of threaded fusion cages, including expandable tubular, spaced multiple first notches are offered on the expandable tubular, portion is propped up in tube wall formation between two neighboring first notch, the side for propping up portion is equipped with extension, the expandable tubular can be squeezed compression swelling, described to prop up portion and extension deforms protrusion outward when swelling state.Since the side for propping up portion is equipped with extension, the portion that props up of expandable tubular is set to deform protrusion outward along the two sides of extension, and the portion of propping up corresponding with extension is deformed highest point, portion is propped up together with extension at highest point, form the supporting surface for being used to support terminal plate of vertebral body, increase the contact area with terminal plate of vertebral body, improve the stability of support, ensure the adjusting and intensity of bearing height, support portion highest point boss is avoided to pierce through terminal plate of vertebral body, patient body is caused to damage, healing success rate is effectively ensured.
Description
Technical field
The utility model relates to medical instruments field, in particular to a kind of threaded fusion cage.
Background technique
In daily life, when the case for causing centrum to damage due to tumour, fracture, infection, retrogression pathological changes etc.
There is generation, when treating these patients, is one fusion device of implantation between the centrum of damage by the way of, generates bone tissue
Creeping substitution, to repair the centrum of damage, however the most external form of traditional threaded fusion cage is larger, so that operative incision is also very
Greatly, the smaller threaded fusion cage of general external form, be easy to cause terminal plate of vertebral body to damage, therefore cause larger damage to patient body
Wound influences to cure success rate.
Summary of the invention
Based on this, the utility model lies in that overcoming the deficiencies of existing technologies, a kind of threaded fusion cage is provided, can performed the operation
The damage to bone is reduced in journey and can effectively avoid piercing through patient's terminal plate of vertebral body, to reduce the damage to patient body.
A kind of threaded fusion cage, including expandable tubular offer spaced multiple first on the expandable tubular and lack
Mouthful, portion is propped up in the tube wall formation between two neighboring first notch, and the side for propping up portion is equipped with extension, described inflatable
Pipe can be squeezed compression swelling, described to prop up portion and extension deforms protrusion outward when swelling state.
In use, between undeformed threaded fusion cage is gradually implanted into centrum to bottom end by top by warp tool, so
It is squeezed afterwards by bottom end of the warp tool to expandable tubular, since the side for propping up portion is equipped with extension, making can be swollen
The portion that props up of tube expansion deforms protrusion along the two sides of extension outward, and the portion of propping up corresponding with extension is deformed highest
Point props up portion together with extension at highest point, forms the supporting surface for being used to support terminal plate of vertebral body, increases and terminal plate of vertebral body
Contact area improves the stability of support, it is ensured that the adjusting and intensity of bearing height avoid support portion highest point boss from piercing through vertebra
Body soleplate causes to damage to patient body, and healing success rate is effectively ensured.And the threaded fusion cage, structure is simple, before deformation
It is small in size, the damage to bone can be reduced in the course of surgery, patient needs the implantation wound of notch small, to patient damage compared with
It is small.
Further, the two sides of the extension offer recess, when swelling state, it is described prop up portion along the recess to
Outer deformation protrusion.
Further, two column, first notch is in axial direction equipped at intervals on the expandable tubular, two column first lack
It mouthful is oppositely arranged, the tube wall between the first notch of adjacent column, which is formed, described props up portion.
Further, the second notch that four column are in axial direction arranged is also provided on the expandable tubular, described in four column
Second notch is provided at circumferentially spaced around expandable tubular, and the tube wall between the second notch of adjacent column forms anti-rotation portion, expands shape
When state, the anti-rotation portion deforms protrusion outward.
Further, wherein the portion of propping up described in a column is located therein between the two column anti-rotation portion, another column prop up position
Between the anti-rotation portion of other two column, and when swelling state, the highest point for propping up portion is concordant with the highest point in the anti-rotation portion.
Further, four column second notches are arranged around the circumferential uniform intervals of expandable tubular；Or wherein two arrange institute
It states the second notch to be oppositely arranged, in addition two column second notches are oppositely arranged.
Further, extrusion mouth is offered in the middle part of the anti-rotation portion.
Further, second notch is provided with the expandable tubular both ends；Or in the axial direction, described second
Notch is arranged alternately with the first notch.
Further, the both ends of first notch are equipped with the first limit film, and there are squeeze between two the first limit films
Pressure interval, the both ends of second notch are equipped with the second limit film, and there are squeeze to be spaced between two the second limit films.
Further, the threaded fusion cage further includes inner core, and the inner core is arranged in the expandable tubular, and institute
The top for stating expandable tubular is connect with the top of the inner core, and the bottom end of the inner core is equipped with and the matched screw thread of warp tool.
Detailed description of the invention
Fig. 1 is structural schematic diagram when threaded fusion cage described in an embodiment of the present invention is undeformed；
Fig. 2 is the structural schematic diagram of the expandable tubular in threaded fusion cage shown in Fig. 1；
Fig. 3 is the structural schematic diagram of the inner core in threaded fusion cage shown in Fig. 1；
Structural schematic diagram when Fig. 4 is threaded fusion cage swelling state shown in Fig. 1；
Fig. 5 is the structural schematic diagram of the expandable tubular in threaded fusion cage shown in Fig. 4；
Fig. 6 is structural schematic diagram when threaded fusion cage described in another embodiment of the utility model is undeformed；
Fig. 7 is the structural schematic diagram of the expandable tubular in threaded fusion cage shown in Fig. 6；
Structural schematic diagram when Fig. 8 is threaded fusion cage swelling state shown in Fig. 6；
Fig. 9 is the structural schematic diagram of the expandable tubular in threaded fusion cage shown in Fig. 8.
Description of symbols:
10, expandable tubular, the 110, first notch, the 112, first limit film, 120, prop up portion, 130, extension, 132, recessed
Mouthful, the 140, second notch, the 142, second limit film, 150, anti-rotation portion, 152, extrusion mouth, 20, inner core, 210, win in succession.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that making practical new to this
The disclosure of type understands more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein "vertical", "horizontal", "left" and "right" and similar statement are
For illustrative purposes, it is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
As shown in Figs. 1-5, an embodiment provides a kind of threaded fusion cage, including expandable tubular 10, the expandable tubular 10
On offer spaced multiple first notches 110, portion 120 is propped up in the formation of tube wall between two neighboring first notch 110,
The side for propping up portion 120 is equipped with extension 130, and the expandable tubular 10 can be squeezed compression swelling, when swelling state, the support
Play portion 120 and extension 130 deformation protrusion outward.
In use, between undeformed threaded fusion cage is gradually implanted into centrum to bottom end by top by warp tool, so
It is squeezed afterwards by bottom end of the warp tool to expandable tubular 10, since the side for propping up portion 120 is equipped with extension
130, so that the portion 120 that props up of expandable tubular 10 is deformed protrusion outward along the two sides of extension 130, and it is corresponding with extension 130
Propping up portion 120 is deformed highest point, increases the contact area of threaded fusion cage axial direction and terminal plate of vertebral body, simultaneously because
Extension 130 is located at the side that portion 120 is propped up in highest point, increases the contact surface of threaded fusion cage radial direction and terminal plate of vertebral body
Product forms the supporting surface for being used to support terminal plate of vertebral body to prop up portion 120 with extension 130 together at highest point, makes and vertebra
The area of body soleplate contact increases from radial with axial direction, not only improves the stability of support, it is ensured that the adjusting of bearing height and
Intensity avoids support portion highest point boss from piercing through terminal plate of vertebral body, causes to damage to patient body, healing success rate is effectively ensured.
And the threaded fusion cage, structure is simple, and deforming precursor product is small, can reduce the damage to bone, Huan Zhexu in the course of surgery
It wants the implantation wound of notch small, patient is damaged smaller.Deformed threaded fusion cage, internal bone grafting space is bigger, heals into
Power is higher.The extension 130 is cut by the tube wall of the expandable tubular 10 in the first notch 110 and is formed.
Further, as shown in Figure 1, 2, the two sides of the extension 130 offer recess 132, described when swelling state
Propping up portion 120, deformation is raised outward along the recess 132.When expandable tubular 10 is squeezed, intensity is relatively supportted at the recess 132
It is small elsewhere to open portion, prop up portion 120 can along recess 132 outside dilatancy, it is ensured that prop up portion between two recesses 132
120 be deformed highest point, to be formed together supporting surface with extension 130, increases the contact area with terminal plate of vertebral body.
Specifically, as shown in Figs 1-4, it is in axial direction equipped at intervals with described in two column on expandable tubular 10 described in the present embodiment
First notch 110, two the first notches of column 110 are oppositely arranged, and the tube wall between the first notch 110 of adjacent column forms described prop up
Portion 120.I.e. two column prop up the two column protrusions for being formed and being oppositely arranged after portion 120 deforms, and the bulge clearance arrangement in each column is used respectively
It is supported in the upper plate to terminal plate of vertebral body with lower plate.
Further, the second notch 140 that four column are in axial direction arranged, four column are also provided on the expandable tubular 10
Being provided at circumferentially spaced around expandable tubular 10 of second notch 140, the tube wall between the second notch 140 of adjacent column form anti-
Rotation portion 150, when swelling state, the anti-rotation portion 150 deformation protrusion outward.When expandable tubular 10 is deformed, four column are anti-
The outside dilatancy in rotation portion 150, from one end of expandable tubular 10 to the other end in terms of, the four anti-rotation portions 150 of column form crosswise, a side
Face can play the role of supporting terminal plate of vertebral body, on the other hand avoid expandable tubular 10 from rotating, prop up two of expandable tubular 10
Portion 120 can firmly jack up terminal plate of vertebral body.
Further, it is located therein between the two column anti-rotation portion 150 wherein propping up portion 120 described in a column, another column support
It plays portion 120 to be located between the anti-rotation portion 150 of other two column, and when swelling state, the highest point for propping up portion 120 and the anti-rotation
The highest point in portion 150 is concordant.The deformed wherein two anti-rotation portions 150 of column are supported in the lower plate of terminal plate of vertebral body, and in addition two column are anti-
Rotation portion 150 is supported on the upper plate of terminal plate of vertebral body.Optionally, four column second notches 140 are around the circumferential equal of expandable tubular 10
The setting of even interval, i.e., four anti-being arranged circumferentially around expandable tubular 10 of rotation portion 150 of column, after deformation adjacent anti-rotation portion 150 it
Between be in 90 ° of angles；Or wherein two column second notches 140 are oppositely arranged, in addition two column, second notch 140 is opposite sets
It sets, i.e., wherein two column in the four anti-rotation portions 150 of column are oppositely arranged, and in addition two column are oppositely arranged, and form corresponding support up and down.
Further, as shown in Fig. 1,2,6,7, the middle part in the anti-rotation portion 150 offers extrusion mouth 152.The extruding
Mouth 152 is cut by the depression in centre of anti-150 two sides of rotation portion to be formed, and the intensity at extrusion mouth 152 is less than anti-150 its elsewhere of rotation portion
Intensity deforms protrusion along extrusion mouth 152 in extrusion process outward.
Further, the both ends of first notch 110 are equipped with the first limit film 112, corresponding two the first limit films
There are squeezing to be spaced between 112, the both ends of second notch 140 are equipped with the second limit film 142, corresponding two second limits
There are squeeze to be spaced between piece 142.When swelling state, since expandable tubular 10 is by compressive deformation, corresponding two the first limit films
112, corresponding two the second limit films 142 are gradually drawn close until mutually abutting, expandable tubular 10 cannot be deformed again at this time.
Optionally, first limit film 112 only can also be set in one end of the first notch 110, first limit film 112 is in the expanded state
It is abutted with the other end of the first notch 110；Second limit film 142 only can also be set in one end of the second notch 140, second limit
Bit slice 142 is abutted with the other end of the first notch 110 in the expanded state.
Further, the threaded fusion cage further includes inner core 20, and the inner core 20 is arranged in the expandable tubular 10
It is interior, and the top of the expandable tubular 10 is connect with the top of the inner core 20, the bottom end of the inner core 20 is equipped with and deformation work
Has matched screw thread.The top of the inner core 20 is equipped with and wins 210 in succession, and the bottom end of the inner core 20 is equipped with threaded hole and (does not show in figure
Out), the top of the expansion tube be welded on it is described win in succession on 210, the two forms a fixed connection, the threaded hole and warp tool
It is threadedly engaged, when deformation, the core of the warp tool holds the top of inner core 20 and expandable tubular 10, then the deformation work
Tool can squeeze the bottom end of expandable tubular 10, make the opposite stress in 10 both ends of expandable tubular, thus dilatancy, expansion process
Be by the top of expandable tubular 10, gradually deform.The inner core 20 is set, is on the one hand convenient for cooperating with warp tool
Connection, on the other hand, improve the intensity of entire threaded fusion cage, and be filled the inside of expandable tubular 10, avoid its to
Interior deformation protrusion.According to actual needs, screw thread can be set directly on the inner wall of expandable tubular 10 and warp tool cooperates, met
Extruding demand.
Specifically, the length of the expandable tubular 10 is greater than the length of the inner core 20, described inflatable when swelling state
The length and said inner tube of pipe 10 or slightly longer than inner core 20.In this way, in use, threaded fusion cage more compact structure, use are more square
Just, while convenient for warp tool and the contraposition of 10 bottom end of expandable tubular squeezed.
Further, the material of the threaded fusion cage is met using SUS304, PEEK, titanium alloy or bone trabecula metal etc.
The material of implanted medical device standard, surface treatment mode can be polishing, frosted, plasma spraying, spraying nano coating etc.
Mode.Expandable tubular 10 and inner core 20 described in the present embodiment are that cylindrical body is also possible to cuboid or pros according to demand
Body.
In one of the embodiments, as shown in Figs. 1-5, second notch 140 is provided with 10 liang of the expandable tubular
End, i.e., the described anti-rotation portion 150 are arranged at 10 both ends of expandable tubular, set in expandable tubular 10 close to the position of top and bottom end
Anti- rotation portion 150 is set, two crosswise structures are formed, plays the role of that threaded fusion cage is avoided to rotate.In another implementation, such as
Shown in Fig. 6-9, in the axial direction, second notch 140 is arranged alternately with the first notch 110, i.e., the anti-rotation portion 150 with
It props up portion 120 to be arranged alternately, after the crosswise structure that setting one is formed by four anti-rotation portions 150, then is arranged one by two
The shape structure for propping up the formation of portion 120, is then arranged cross structure, then a word structure is arranged again, and so on.Crosswise knot
It the quantity of structure and a word structure and puts in order and can be set as needed.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of threaded fusion cage, which is characterized in that including expandable tubular, offered on the expandable tubular spaced more
Portion is propped up in a first notch, the tube wall formation between two neighboring first notch, and the side for propping up portion is equipped with extension, institute
Compression swelling can be squeezed by stating expandable tubular, described to prop up portion and extension deforms protrusion outward when swelling state.
2. threaded fusion cage according to claim 1, which is characterized in that the two sides of the extension offer recess, swollen
It is described to prop up portion and deform protrusion outward along the recess when swollen state.
3. threaded fusion cage according to claim 2, which is characterized in that in axial direction interval is set on the expandable tubular
There is two column, first notch, two the first notches of column are oppositely arranged, and the tube wall between the first notch of adjacent column forms the support
The portion of rising.
4. threaded fusion cage according to claim 3, which is characterized in that be also provided with four column on the expandable tubular along axis
The second notch arranged to direction, four column the second notch being provided at circumferentially spaced around expandable tubular, the second of adjacent column lack
Tube wall between mouthful forms anti-rotation portion, and when swelling state, the anti-rotation portion deforms protrusion outward.
5. threaded fusion cage according to claim 4, which is characterized in that wherein the portion of propping up described in a column is located therein two column
Between the anti-rotation portion, another column portion of propping up is located between the anti-rotation portion of other two column, and when swelling state, the portion of propping up is most
High point is concordant with the highest point in the anti-rotation portion.
6. threaded fusion cage according to claim 5, which is characterized in that week of four column second notches around expandable tubular
It is arranged to uniform intervals；Or wherein two column second notches are oppositely arranged, in addition two column second notches are oppositely arranged.
7. threaded fusion cage according to claim 6, which is characterized in that offer extrusion mouth in the middle part of the anti-rotation portion.
8. threaded fusion cage according to claim 7, which is characterized in that second notch is provided with the expandable tubular
Both ends；Or in the axial direction, second notch is arranged alternately with the first notch.
9. threaded fusion cage according to claim 8, which is characterized in that the both ends of first notch are equipped with the first limit
Bit slice, there are squeezing to be spaced between two the first limit films, the both ends of second notch are equipped with the second limit film, and two the
There are squeeze to be spaced between two limit films.
10. -9 described in any item threaded fusion cages according to claim 1, which is characterized in that it further includes inner core, the inner core
It is arranged in the expandable tubular, and the top of the expandable tubular is connect with the top of the inner core, the bottom end of the inner core
Equipped with the matched screw thread of warp tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721725086.XU CN208974223U (en) | 2017-12-12 | 2017-12-12 | Threaded fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721725086.XU CN208974223U (en) | 2017-12-12 | 2017-12-12 | Threaded fusion cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208974223U true CN208974223U (en) | 2019-06-14 |
Family
ID=66777566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721725086.XU Expired - Fee Related CN208974223U (en) | 2017-12-12 | 2017-12-12 | Threaded fusion cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208974223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108113782A (en) * | 2017-12-12 | 2018-06-05 | 中以医疗技术发展有限公司 | Threaded fusion cage |
-
2017
- 2017-12-12 CN CN201721725086.XU patent/CN208974223U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108113782A (en) * | 2017-12-12 | 2018-06-05 | 中以医疗技术发展有限公司 | Threaded fusion cage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: Room 910, 9/F, Asian Trade Center, 79 Limu Road, Kwai Chung, Hong Kong, China Patentee after: ASI MEDICAL TECHNOLOGIES Ltd. Address before: Room 2610, 26 floors, Asian Trade Center, 79 Limu Road, Kwai Chung, Hong Kong, China Patentee before: ASI MEDICAL TECHNOLOGIES Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190614 |