CN208910602U - Height-adjustable threaded fusion cage - Google Patents
Height-adjustable threaded fusion cage Download PDFInfo
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- CN208910602U CN208910602U CN201721724097.6U CN201721724097U CN208910602U CN 208910602 U CN208910602 U CN 208910602U CN 201721724097 U CN201721724097 U CN 201721724097U CN 208910602 U CN208910602 U CN 208910602U
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- outer tube
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Abstract
The utility model relates to a kind of height-adjustable threaded fusion cages, including inner tube and the outer tube being set in outside said inner tube, outer tube is connect with inner tube top, the first notch is offered on outer tube, portion is propped up in outer tube wall formation between two neighboring first notch, the end of first notch is equipped with the first limit film extended along outer tube axial direction, the second notch is offered in said inner tube, inner tubal wall between two neighboring second notch forms the first support portion, first support portion is corresponding with the position of first notch, when the first squeezed state, the portion of propping up of outer tube deforms protrusion outward, and first limit film abut against, when the second squeezed state, first support portion of inner tube deforms protrusion outward and opens first limit film, the portion of propping up of the outer tube can continue to deform protrusion outward.Deforming precursor product is small, smaller to patient's damage, has the first squeezed state and the second squeezed state, meets the requirement of the intervertebral height of different patients.
Description
Technical field
The utility model relates to medical instruments field, in particular to a kind of height-adjustable threaded fusion cage.
Background technique
In daily life, when the case for causing centrum to damage due to tumour, fracture, infection or 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, so that the centrum of damage is repaired, however traditional threaded fusion cage height is fixed, and the intervertebral height of human body is because of people
And it is different, the intervertebral height of different patients can not be suitble to by adjusting the height of threaded fusion cage during surgery, affect treatment
Versatility and applicability；And generally the threaded fusion cage volume with height adjusting function is larger, structure is more complex, implantation when institute
The wound for needing to cut is larger, larger to the damage of patient.
Summary of the invention
Based on this, the utility model lies in that overcoming the deficiencies of existing technologies, a kind of height-adjustable threaded fusion cage is provided,
It is not only able to achieve height adjustment, but also small to the damage of patient.
A kind of height-adjustable threaded fusion cage, including inner tube and the outer tube being set in outside said inner tube, the outer tube with
Inner tube top connects, and offers the first notch on the outer tube, and portion is propped up in the outer tube wall formation between two neighboring first notch,
The end of first notch is equipped with the first limit film extended along outer tube axial direction, and second is offered in said inner tube and is lacked
Mouthful, the inner tubal wall between two neighboring second notch forms the first support portion, first support portion and first notch
Position is corresponding, and said inner tube and outer tube can be squeezed compression swelling, and when the first squeezed state, the portion of propping up of the outer tube deforms outward
Protrusion, and the first limit film abuts against, when the second squeezed state, the first support portion of said inner tube deforms protrusion outward and opens
First limit film enables the portion of propping up of the outer tube to continue to deform protrusion outward.
In use, between the undeformed height-adjustable threaded fusion cage is implanted into centrum by warp tool, then
It is squeezed by bottom end of the warp tool to outer tube, the portion of propping up of outer tube is made to deform protrusion outward, after deformation to a certain extent,
First limit film abuts the limitation portion of propping up and continues to be deformed, and threaded fusion cage is in the first squeezed state at this time, becomes outward
The portion of propping up of shape protrusion can support terminal plate of vertebral body；If the threaded fusion cage height of the first squeezed state is not able to satisfy the intervertebral of patient
Height requirement can first squeeze the bottom end of inner tube, so that the first support portion of inner tube is deformed protrusion outward, while deformed
First support portion opens the first limit film corresponding with its position, top clearance of stepping down out, then again to the bottom end of outer tube outward
It is squeezed, the portion of propping up of outer tube is made to continue deformation protrusion outward, until the portion of propping up is softened to the support force with terminal plate of vertebral body
Until suitable.The height-adjustable threaded fusion cage, structure is simple, and deforming precursor product is small, so patient needs the implantation of notch
Wound is small, smaller to patient's damage, and it has the first squeezed state and the second squeezed state, can adjust its change according to demand
Shape height, meets the requirement of the intervertebral height of different patients, and versatility and applicability are preferable.
Further, the side for propping up portion is equipped with extension, and the two sides of the extension offer recess, and first squeezes
It is described to prop up portion and deform protrusion outward along the recess when pressure condition and the second squeezed state.
Further, multiple first notches, multiple first notch distributions are in axial direction equipped at intervals on the outer tube
At two column being oppositely arranged, the outer tube wall between the first notch of adjacent column forms and props up portion, edge in said inner tube described in two column
Axial direction is equipped at intervals with multiple second notches, and multiple second notches are scattered in two column being oppositely arranged, and the of adjacent column
Inner tubal wall between two notches forms two column first support portions.
Further, four column third notches are in axial direction offered on the outer tube, between the third notch of adjacent column
Outer tube wall forms the four anti-rotation portions of column, and the end of the third notch is equipped with the second limit film extended along outer tube axial direction, institute
It states and in axial direction offers four in inner tube and arrange the 4th notch, the inner tubal wall between the 4th notch of adjacent column forms four column second
Support portion, second support portion is corresponding with the position of the third notch, when the first squeezed state, the anti-rotation portion of the outer tube
Deformation protrusion outward, and the second limit film abuts against, and when the second squeezed state, the second support portion of said inner tube deforms convex outward
Second limit film is played and opens, the anti-rotation portion of the outer tube can continue to deform 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 portion of propping up is located at
Between the anti-rotation portion of other two column, and when the first squeezed state and the second squeezed state, the highest point for propping up portion resists with described
The highest point in rotation portion is concordant.
Further, the anti-rotation portion is arranged at the outer tube both ends；Or in the axial direction, the anti-rotation portion with prop up
Portion is arranged alternately.
Further, the middle part that the middle part in the anti-rotation portion, the middle part of the first support portion and second prop up portion is provided with extruding
Mouthful, for deformation outward after being squeezed anti-rotation portion, the first support portion and second portion of propping up.
Further, the both ends of first notch are equipped with the first limit film, and there are extruding between two the first limit films
Interval, wherein being greater than the length of another the first limit film, the third closer to the length of first limit film on outer tube top
Notch both ends are equipped with the second limit film, there are squeezing to be spaced between two the second limit films, wherein closer to outer tube top
The length of second limit film is greater than the length of another the second limit film.
Further, the height-adjustable threaded fusion cage further includes inner core, and the inner core is arranged in said inner tube, and
The top of the outer tube and inner tube is connect with the top of the inner core, and the bottom end of the inner core is equipped with matched with warp tool
Screw thread.
Further, the length of the outer tube is greater than the length of said inner tube, and the length of said inner tube is greater than the inner core
Length, when the first squeezed state, the length of the outer tube and the equal length of said inner tube are described outer when the second squeezed state
The length of pipe and inner tube is equal with the inner core or slightly longer than inner core.
Detailed description of the invention
Structural schematic diagram of the Fig. 1 for height-adjustable threaded fusion cage described in the utility model embodiment when undeformed；
Fig. 2 is the structural schematic diagram of the outer tube in height-adjustable threaded fusion cage shown in Fig. 1；
Fig. 3 is the structural schematic diagram of the inner tube in height-adjustable threaded fusion cage shown in Fig. 1；
Fig. 4 is the structural schematic diagram of the inner core in height-adjustable threaded fusion cage shown in Fig. 1；
Structural representation when Fig. 5 is height-adjustable the first squeezed state of threaded fusion cage described in the utility model embodiment
Figure；
Fig. 6 is the structural schematic diagram of the outer tube in height-adjustable threaded fusion cage shown in Fig. 5；
Structural representation when Fig. 7 is height-adjustable the second squeezed state of threaded fusion cage described in the utility model embodiment
Figure；
Fig. 8 is the structural schematic diagram of the outer tube in height-adjustable threaded fusion cage shown in Fig. 7；
Fig. 9 is the structural schematic diagram of the inner tube in height-adjustable threaded fusion cage shown in Fig. 7.
Description of symbols:
10, inner tube, 101, extrusion mouth, the 110, second notch, the 120, first support portion, the 130, the 4th notch, 140, second
Support portion, 150, third limit film, the 160, the 4th limit film, 20, outer tube, 201, extrusion mouth, the 210, first notch, 220, prop up
Portion, the 230, first limit film, 240, extension, 250, recess, 260, third notch, 270, anti-rotation portion, the 280, second limit film,
30, inner core, 310, 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 1-4, a kind of height-adjustable threaded fusion cage including inner tube 10 and is set in outside said inner tube 10
Outer tube 20, the outer tube 20 are connect with 10 top of inner tube, offer the first notch 210 on the outer tube 20, and two neighboring first
Portion 220 is propped up in outer tube wall formation between notch 210, and the end of first notch 210 is equipped with prolongs along 20 axial direction of outer tube
The first limit film 230 stretched offers the second notch 110, the inner tube between two neighboring second notch 110 in said inner tube 10
Wall formed the first support portion 120, first support portion 120 is corresponding with the position of first notch 210, said inner tube 10 and
Outer tube 20 can be squeezed compression swelling, and when the first squeezed state, the outer tube 20 props up the deformation protrusion outward of portion 220, and first
Limit film 230 abuts against, and when the second squeezed state, the first support portion 120 of said inner tube 10 deformation protrusion and opens institute outward
The first limit film 230 is stated, the portion 220 that props up of the outer tube 20 is enable to continue deformation protrusion outward.
In use, between the undeformed height-adjustable threaded fusion cage is implanted into centrum by warp tool, then
It is squeezed by bottom end of the warp tool to outer tube 20, make outer tube 20 props up the deformation protrusion outward of portion 220, is deformed to certain
After degree, the abutting limitation of the first limit film 230 props up portion 220 and continues to be deformed, and threaded fusion cage is in first and squeezes at this time
Pressure condition, the portion 220 that props up of deformation protrusion can support terminal plate of vertebral body outward；If the threaded fusion cage height of the first squeezed state is not
Be able to satisfy the intervertebral height demand of patient, can the bottom end first to inner tube 10 squeeze, make the first support portion 120 of inner tube 10 to
Outer deformation protrusion, while deformed first support portion 120 opens the first limit film 230 corresponding with its position outward, steps down
Then top clearance out again squeezes the bottom end of outer tube 20, the portion 220 that props up of outer tube 20 is made to continue to deform protrusion outward,
It is softened until suitable with the support force of terminal plate of vertebral body until the portion of propping up 220.The height-adjustable threaded fusion cage, structure letter
Single, deforming precursor product is small, so patient needs the implantation wound of notch small, it is smaller to patient's damage, and it has first to squeeze
Pressure condition and the second squeezed state, can adjust its Deformation Height according to demand, and the use for meeting the intervertebral height of different patients is wanted
It asks, and according to the control for squeezing it degree, can flexibly realize the adjusting for strutting height to outer tube 20, versatility and applicability
Preferably；Deformed threaded fusion cage, internal bone grafting space is bigger, and healing has higher success rate.First limit film 230 is by
20 outer wall of outer tube in one notch 210 cuts to be formed.
Further, as shown in Figure 1, 2, the side for propping up portion 220 is equipped with extension 240, and the extension 240
Two sides offer recess 250, described to prop up portion 220 along the recess 250 outward when the first squeezed state and the second squeezed state
Deformation protrusion.It is equipped with extension 240 by the side in the portion of propping up 220, and offers recess 250 in the two sides of extension 240,
When outer tube 20 is squeezed, intensity is smaller at the recess 250, and propping up portion 220 can expand outward along recess 250
Deformation forms protrusion, and the portion 220 that props up as shown in Fig. 5,7, and between two recesses 250 is deformed highest point, and formation is used for
The supporting surface of terminal plate of vertebral body is supported, increases the contact area with terminal plate of vertebral body, improves the stability of support, it is ensured that bearing height
Adjusting and intensity avoid support portion highest point boss from piercing through terminal plate of vertebral body, cause to damage to patient body, while in the portion of propping up
It is equipped with extension 240 between two recesses 250 of 220 side, further increases the supporting surface, increase connects with terminal plate of vertebral body
Contacting surface product.
The extension 240 is cut by 20 outer wall of outer tube in the first notch 210 and is formed.As shown in Figure 1, described first lacks
Mouthfuls 210 both ends are equipped with the first limit film 230, there are squeezing to be spaced between two the first limit films 230, the first squeezed state
When, since outer wall is by compressive deformation, two the first limit films 230 are gradually drawn close until mutually abutting, outer tube 20 cannot be again at this time
It is deformed, when inner tube 10 is deformed, the first support portion 120 protrusion opens the first limit film 230 outward, from
And top clearance is conceded, so that outer tube 20 is extruded again deformation.Further, two first limits at 210 both ends of the first notch
In piece 230, wherein closer to 20 top of outer tube the first limit film 230 length be greater than another first limit film 230 due to
Outer tube 20 and inner tube 10 are squeezed and deformed from bottom end to top, will be closer to the length of first limit film 230 on 20 top of outer tube
Degree is set greater than the length of another the first limit film 230, convenient for being extruded and towards the of the inner tube of top compressive deformation 10
One support portion 120 can preferably open longer first limit film 230 of length, can destroy the first limit film 230 to outer tube 20
The limitation of deformation, so that outer tube 20 be enable to continue to be squeezed and deformed.Certainly, without being limited thereto, it is lacked according to actual use demand, first
Two first limit films 230 at mouthful 210 both ends, the length closer to first limit film 230 on 20 top of outer tube be also smaller than or
Equal to another the first limit film 230, as long as shown in Figure 1, the first limit film 230 can be opened after the deformation of the first support portion 120
?.Optionally, first limit film 230 only can also be set in one end of the first notch 210, first limit film 230 is first
It is abutted under squeezed state with the other end of the first notch 210.
Further, as shown in Figure 1, 2, multiple described first are in axial direction equipped at intervals on outer tube described in the present embodiment to lack
Mouth 210, multiple first notches 210 are scattered in two column being oppositely arranged, and the outer tube wall between the first notch 210 of adjacent column is formed
Portion 220 is propped up described in two column, is in axial direction equipped at intervals with multiple second notches 110 in said inner tube 10, multiple second
Notch 110 is scattered in two column being oppositely arranged, and the inner tubal wall between the second notch 110 of adjacent column forms described first of two column
Support part 120.As shown in Fig. 5,7, i.e., two column prop up the two column protrusions for being formed and being oppositely arranged after portion 220 deforms, the protrusion in each column
Arranged for interval is respectively used to be supported the upper plate of terminal plate of vertebral body with lower plate.
Further, as shown in Figure 1, 2, four column third notches 260 are in axial direction offered on the outer tube, adjacent column
Outer tube wall between third notch 260 forms the four anti-rotation portions 270 of column, and the end of the third notch 260 is equipped with along 20 axis of outer tube
To the second limit film 280 of direction extension, four are in axial direction offered in said inner tube 10 and arranges the 4th notch 130, adjacent column
The 4th notch 130 between inner tubal wall form four the second support portions of column 140, second support portion 140 is lacked with the third
Mouthfuls 260 position is corresponding, when the first squeezed state, the anti-rotation portion 270 of the outer tube 20 deformation protrusion outward, and the second limit film
280 abut against, and when the second squeezed state, the second support portion 140 of said inner tube 10 deformation protrusion and opens described second outward
Limit film 280, the anti-rotation portion 270 of the outer tube 20 can continue to deform protrusion outward.When outer tube 20 is deformed, four column are anti-
Rotation portion 270 by outside dilatancy, from one end of outer tube 20 to the other end in terms of, the four anti-rotation portions 270 of column form crosswise, on the one hand
It can play the role of supporting terminal plate of vertebral body, outer tube 20 is on the other hand avoided to rotate, enable two of outer tube 20 to prop up portion 220 and consolidate
Ground jacks up terminal plate of vertebral body.
As shown in Figure 4-8, the deformation principle in anti-rotation portion 270 is similar with the portion of propping up 220, when the first squeezed state, anti-rotation portion
270 deformations are unable to redeformation after the limitation of the second limit film 280 to a certain extent, when inner tube 10 deforms the support of the second support portion 140
After opening the second limit film 280, anti-rotation portion 270 can continue to be deformed；The structure and set-up mode of second limit film 280 and
One limit film 230 is similar, and 260 both ends of third notch are equipped with the second limit film 280, between two the second limit films 280
There are squeezing to be spaced, wherein the length closer to second limit film 280 on 20 top of outer tube is greater than another second limit film 280
Length, it is longer convenient for being extruded and can preferably open length towards the second support portion 140 of the inner tube of top compressive deformation 10
The second limit film 280, the limitation that the second limit film 280 deforms outer tube 20 can be destroyed, so that outer tube 20 be enable to continue
It is squeezed and deformed.Certainly, without being limited thereto, according to actual use demand, 260 both ends of third notch are equipped with the second limit film 280, more
Length close to second limit film 280 on 20 top of outer tube also may be less than or equal to another the second limit film 280, such as Fig. 1,2
It is shown, as long as the second limit film 280 can be opened after the deformation of the second support portion 140.It optionally, can also be only in third notch
The second limit film 280 is arranged in 260 one end, and second limit film 280 is another with third notch 260 under the first squeezed state
End abuts.
According to actual needs, the both ends of second notch 110 may also set up third limit film 150, two third limits
Extruding spacing between piece 150 is arranged according to the highest height of projection demand of the first support portion 120, the 4th notch 130
Both ends may also set up the 4th limit film 160, and the extruding spacing between two the 4th limit films 160 is according to the second support portion 140
The setting of highest height of projection demand.
Further, as shown in Fig. 4,7, wherein one column described in prop up portion 220 be located therein the two column anti-rotation portion 270 it
Between, another column are propped up portion 220 and are located between the anti-rotation portion 270 of other two column, and when the first squeezed state and the second squeezed state, institute
The highest point for stating the portion of propping up 220 is concordant with the highest point in the anti-rotation portion 270.The deformed wherein two anti-rotation portions 270 of column support
In the lower plate of terminal plate of vertebral body, in addition the two anti-rotation portions 270 of column are supported on the upper plate of terminal plate of vertebral body.Optionally, the four anti-rotation portion of column
270 being arranged circumferentially around outer tube 20 are in 90 ° of angles between adjacent anti-rotation portion 270 after deformation；According to actual needs,
Wherein two column in the four anti-rotation portions 270 of column can be oppositely arranged, in addition two column are oppositely arranged, and are formed corresponding support up and down and are
It can.
In one of the embodiments, as shown in Fig. 1,5,6, at 20 both ends of outer tube, i.e., the anti-rotation portion 270 is arranged
Anti- rotation portion 270 is set close to the position of top and bottom end in outer tube 20, forms two crosswise structures, plays and avoid vertebral fusion
The effect of device rotation.In another implementation, in the axial direction, the anti-rotation portion 270 is arranged alternately with the portion of propping up 220, i.e.,
After the crosswise structure that one is formed by four anti-rotation portions 270 is set, then it is arranged one and props up the word that portion 220 is formed by two
Then cross structure is arranged in shape structure again, then a word structure is arranged, and so on.The quantity of crosswise structure and a word structure
And it puts in order and can be set as needed.
Further, as shown in Figure 1, 2, 3, the middle part in the anti-rotation portion 270 is provided with extrusion mouth 201, the first support portion 120
Middle part and second prop up portion 220 middle part be provided with extrusion mouth 101, for making anti-rotation portion 270, the first support portion 120 and second
Prop up deformation outward after portion 220 is squeezed.The extrusion mouth 101 is to prop up 220 two sides of portion by the first support portion 120 or the second
Depression in centre cut to be formed, the intensity at extrusion mouth 101 on the first support portion 120 is less than first its elsewhere of support portion 120
Intensity, the intensity at extrusion mouth 101 on the second support portion 140 squeezed less than the intensity of 140 its elsewhere of the second support portion
It is convenient for deforming protrusion outward along extrusion mouth 101 in journey；The extrusion mouth 201 is to be cut by the depression in centre of anti-270 two sides of rotation portion
It cuts to be formed, the intensity at extrusion mouth 201 is less than the intensity of anti-270 its elsewhere of rotation portion, is convenient in extrusion process along extrusion mouth 201
Deformation protrusion outward.
Further, as shown in Fig. 1,3,6, the height-adjustable threaded fusion cage further includes inner core 30, the inner core 30
It is arranged in said inner tube 10, and the top of the outer tube 20 and inner tube 10 is connect with the top of the inner core 30, it is described interior
The bottom end of core 30 is equipped with and the matched screw thread of warp tool.The top of the inner core 30 is equipped with and wins 310 in succession, the bottom of the inner core 30
End is equipped with threaded hole (not shown), the top of said inner tube 10 and outer tube 20 be welded on it is described win in succession on 310, three's shape
At being fixedly connected, the threaded hole is threadedly engaged with warp tool, when deformation, the core of the warp tool hold inner core 30,
The top of inner tube 10 and outer tube 20, then the warp tool can squeeze the bottom end of outer tube 20, inner tube 10, make outer tube 20
With the opposite stress in 10 both ends of inner tube, thus dilatancy, expansion process is by gradually sending out the top of outer tube 20 or inner tube 10
Change shape.The inner core 30 is set, on the one hand convenient for being attached to inner tube 10 and outer tube 20, while conveniently being matched with warp tool
It closes connection and on the other hand improves the intensity of entire threaded fusion cage, and be filled the inside of inner tube 10, avoid it inwardly
Deformation protrusion.According to actual needs, screw thread can be set directly on the inner wall of inner tube 10 and warp tool cooperates, meet and squeeze need
It asks.
The length of the outer tube 20 is greater than the length of said inner tube 10 in one of the embodiments, said inner tube 10
Length is greater than the length of the inner core 30, when the first squeezed state, the length phase of the length and said inner tube 10 of the outer tube 20
When Deng, the second squeezed state, the length of the outer tube 20 and inner tube 10 is equal with the inner core 30 or slightly longer than inner core.In this way,
In use, the threaded fusion cage more compact structure under the first squeezed state and the second squeezed state, using more convenient, it is convenient for simultaneously
Warp tool is squeezed with the contraposition of 20 bottom end of outer tube.
Further, the material of the height-adjustable threaded fusion cage uses SUS304, PEEK, titanium alloy or bone trabecula
Metal etc. meets the material of implanted medical device standard, and surface treatment mode can be polishing, frosted, plasma spraying, spraying
The modes such as nano coating.The present embodiment said inner tube 10, outer tube 20 and inner core 30 are that cylindrical body is also possible to grow according to demand
Cube or square.
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 height-adjustable threaded fusion cage, which is characterized in that including inner tube and the outer tube being set in outside said inner tube, institute
It states outer tube to connect with inner tube top, the first notch, the outer tube wall shape between two neighboring first notch is offered on the outer tube
At the portion of propping up, the end of first notch is equipped with the first limit film extended along outer tube axial direction, opens up in said inner tube
There is the second notch, inner tubal wall between two neighboring second notch forms the first support portion, first support portion and described the
The position of one notch is corresponding, and said inner tube and outer tube can be squeezed compression swelling, and when the first squeezed state, the outer tube props up portion
Deformation protrusion outward, and the first limit film abuts against, and when the second squeezed state, the first support portion of said inner tube deforms convex outward
It rises and opens first limit film, the portion of propping up of the outer tube is enable to continue to deform protrusion outward.
2. height-adjustable threaded fusion cage according to claim 1, which is characterized in that the side for propping up portion is equipped with
Extension, and the two sides of the extension offer recess, it is described to prop up portion edge when the first squeezed state and the second squeezed state
The recess deforms protrusion outward.
3. height-adjustable threaded fusion cage according to claim 2, which is characterized in that on the outer tube in axial direction
Be equipped at intervals with multiple first notches, multiple first notches are scattered in two column being oppositely arranged, the first notch of adjacent column it
Between outer tube wall formed two column described in prop up portion, multiple second notches are in axial direction equipped at intervals in said inner tube, it is more
A second notch is scattered in two column being oppositely arranged, and the inner tubal wall between the second notch of adjacent column forms described first of two column
Support part.
4. height-adjustable threaded fusion cage according to claim 3, which is characterized in that on the outer tube in axial direction
Four column third notches are offered, the outer tube wall between the third notch of adjacent column forms the four anti-rotation portions of column, the third notch
End is equipped with the second limit film for extending along outer tube axial direction, and four are in axial direction offered in said inner tube, and to arrange the 4th scarce
Mouthful, the inner tubal wall between the 4th notch of adjacent column forms four the second support portions of column, and second support portion and the third lack
Mouthful position it is corresponding, when the first squeezed state, the anti-rotation portion of the outer tube deforms protrusion outward, and the second limit film abuts against,
When the second squeezed state, the second support portion of said inner tube deforms protrusion outward and opens second limit film, the outer tube
Anti- rotation portion can continue outward deform protrusion.
5. height-adjustable threaded fusion cage according to claim 4, which is characterized in that wherein prop up position described in a column
Between the wherein two column anti-rotation portions, another column portion of propping up is located at other two and arranges between anti-rotation portion, and the first squeezed state and
When the second squeezed state, the highest point for propping up portion is concordant with the highest point in the anti-rotation portion.
6. height-adjustable threaded fusion cage according to claim 5, which is characterized in that the anti-rotation portion is arranged described
Outer tube both ends；Or in the axial direction, the anti-rotation portion is arranged alternately with the portion of propping up.
7. height-adjustable threaded fusion cage according to claim 5, which is characterized in that the middle part in the anti-rotation portion,
The middle part of one support portion and second prop up portion middle part be provided with extrusion mouth, for make anti-rotation portion, the first support portion and second support
Deformation outward after the portion of rising is squeezed.
8. height-adjustable threaded fusion cage according to claim 4, which is characterized in that the both ends of first notch are equal
Equipped with the first limit film, there are squeezing to be spaced between two the first limit films, wherein closer to first limit film on outer tube top
Length be greater than the length of another the first limit film, third notch both ends are equipped with the second limit film, two second limits
There are squeezing to be spaced between bit slice, wherein the length closer to second limit film on outer tube top is greater than another second limit film
Length.
9. height-adjustable threaded fusion cage according to claim 1-8, which is characterized in that it further includes interior
Core, the inner core is arranged in said inner tube, and the top of the outer tube and inner tube is connect with the top of the inner core, described
The bottom end of inner core is equipped with and the matched screw thread of warp tool.
10. height-adjustable threaded fusion cage according to claim 9, which is characterized in that the length of the outer tube is greater than
The length of said inner tube, the length of said inner tube are greater than the length of the inner core, when the first squeezed state, the length of the outer tube
With the equal length of said inner tube, when the second squeezed state, the length of the outer tube and inner tube is equal or slightly longer with the inner core
In inner core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721724097.6U CN208910602U (en) | 2017-12-12 | 2017-12-12 | Height-adjustable threaded fusion cage |
Applications Claiming Priority (1)
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| CN201721724097.6U CN208910602U (en) | 2017-12-12 | 2017-12-12 | Height-adjustable threaded fusion cage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147582A1 (en) * | 2020-01-22 | 2021-07-29 | 宁波华科润生物科技有限公司 | Percutaneous intervertebral fusion system |
| WO2022057017A1 (en) * | 2020-09-17 | 2022-03-24 | 山东冠龙医疗用品有限公司 | Vertebral body expanding and filling device and propeller |
-
2017
- 2017-12-12 CN CN201721724097.6U patent/CN208910602U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021147582A1 (en) * | 2020-01-22 | 2021-07-29 | 宁波华科润生物科技有限公司 | Percutaneous intervertebral fusion system |
| WO2022057017A1 (en) * | 2020-09-17 | 2022-03-24 | 山东冠龙医疗用品有限公司 | Vertebral body expanding and filling device and propeller |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190531 Effective date of abandoning: 20191126 |
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| AV01 | Patent right actively abandoned |