CN108670394A - A kind of bone expansion structure - Google Patents
A kind of bone expansion structure Download PDFInfo
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- CN108670394A CN108670394A CN201810614560.4A CN201810614560A CN108670394A CN 108670394 A CN108670394 A CN 108670394A CN 201810614560 A CN201810614560 A CN 201810614560A CN 108670394 A CN108670394 A CN 108670394A
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 94
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000002639 bone cement Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/885—Tools for expanding or compacting bones or discs or cavities therein
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7071—Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; Tools therefor
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The present invention discloses a kind of bone expansion structure, is related to field of medical technology.Bone expansion structure includes the first elastic dilatation part and the second elastic dilatation part.Second elastic dilatation part is located at side of the first elastic dilatation part far from default axis, and bone expansion structure is configured to have compressive state and expansion state under the resilient force of the first elastic component and the second elastic component.The bone expansion structure effectively can be expanded and be supported to centrum, and can absorb the stress that generation is squeezed between centrum.
Description
Technical field
The present invention relates to field of medical technology, in particular to a kind of bone expansion structure.
Background technology
Percutaneous vertbroplasty (percutaneous vertebroplasty, PVP) refers to percutaneously by pedicle of vertebral arch or vertebra
Injection bone cement increases centrum strength and stability to reach in nut extroversion centrum, prevents from collapsing, and relieves pain or even part
A kind of minimally invasive spinal surgery technology for the purpose of recovery vertebral height.Convex plasty (Percutaneous after percutaneous puncture
Kyphoplasty, PKP) through growing up on the basis of percutaneous vertbroplasty.
However, the bone filler structure list used in existing plasty convex after percutaneous vertbroplasty and percutaneous puncture
One, filling support cannot be effectively performed.
Invention content
The purpose of the present invention is to provide a kind of bone expansion structure, which can effectively expand centrum
And support, and the stress that generation is squeezed between centrum can be absorbed.
What the embodiment of the present invention was realized in：
A kind of bone expansion structure, including：
First elastic dilatation part, the first elastic dilatation part include：
First elastic component, multiple first elastic components are sequentially connected around default axis, Duo Ge
The filling space of the first elastic dilatation part end face of perforation is limited between one elastic component；And
Second elastic dilatation part, the second elastic dilatation part include：
Second elastic component, multiple second elastic components are sequentially connected around default axis；
Second elastic dilatation part is located at side of the first elastic dilatation part far from default axis, and bone expansion structure is configured to
Have under the resilient force of the first elastic component and the second elastic component：
Compressive state, multiple first elastic components and multiple second elastic components are drawn close to default axis；And
Expansion state, multiple first elastic components and multiple second elastic components expanded on the direction far from default axis and
The volume for filling space increases.
Inventor devises above-mentioned bone expansion structure, which can effectively be supported centrum, reaches and increases
Strong centrum strength and stability, and absorb the extruding force of centrum part.Bone expansion structure includes the first elastic dilatation part and second
Elastic dilatation part.Wherein, the first elastic dilatation part includes multiple first elastic components, and by multiple first elastic components around default axis
It is sequentially connected made of surrounding, the second elastic dilatation part includes multiple second elastic components, and by multiple second elastic components around default
Axis is sequentially connected surround made of.Wherein, the first elastic component and the second elastic component all have elasticity, by its elastic force, make
Obtaining bone expansion structure tool, there are two states, that is, compressive state and expansion state.Specifically, when bone expansion structure is in compression shape
When state, multiple first elastic components and multiple second elastic components are drawn close to default axis.When bone expansion structure is in expansion state,
Multiple first elastic components and multiple second elastic components expanded on the direction far from default axis and multiple first elastic components it
Between formed perforation the first elastic dilatation part opposite end expansion cavity.At this point, can clearly learn, the bone in compressive state expands
It is more small than the bone expansion structure in expansion state to open structure.When actually using the bone expansion structure, filled by puncturing
It sets and the bone expansion structure in compressive state is transported in corpus vertebrae, when bone expansion structure is between centrum, control bone expands
Open structure so that bone expansion structure is converted into expansion state, and the first elastic component and the second elastic component after expansion carry out centrum
Expansion support, and it is implanted into filler to filling space.Due to the effect by filler and elastic force so that bone expansion structure
Can support effectively be filled to centrum, and enhance centrum strength and stability, further, bone expansion structure passes through certainly
Centrum is expanded in the deformation of body, reaches corpus vertebrae replacement and support effect steady in a long-term, and bone expansion structure itself is a bullet
Property body, absorb the stress that generates when centrum squeezes with resilience performance.
In an embodiment of the present invention：
On the cross section of the first elastic dilatation part, multiple first elastic components are centrosymmetric distribution around default axis；
On the cross section of the second elastic dilatation part, multiple second elastic components are centrosymmetric distribution around default axis.
In an embodiment of the present invention：
When bone expansion structure is in compressive state, the second elastic component is close to the first elastic component close to the wall surface of default axis
Wall surface；
When bone expansion structure is in expansion state, the second elastic component close to the wall surface of default axis and the first elastic component it
Between have gap.
In an embodiment of the present invention：
First elastic component includes elastic strip and connector；
Elastic strip has opposite first end and second end along the extending direction for presetting axis；
Multiple connectors are respectively arranged at two opposite sides of first end and opposite two sides of second end；
It is connected by connector between two neighboring elastic strip.
In an embodiment of the present invention：
Two opposite sides of first end are respectively set there are two connector, and two connectors are from first end to second end
It tilts and extends on direction；
First elastic component is symmetrical set along the center line of elastic strip.
In an embodiment of the present invention：
When bone expansion structure is in expansion state, elastic strip has in meandering shape and along the extending direction round of default axis
Section and invagination section are extended out, section is extended out against the second elastic component, there is gap between section of invaginating and the second elastic component；
When bone expansion structure is in compressive state, the first elastic dilatation part is cylindrical.
In an embodiment of the present invention：
When bone expansion structure is in expansion state, elastic strip has successively in meandering shape and along the extending direction of default axis
It extends out section, section of invaginating and extend out section.
In an embodiment of the present invention：
Second elastic component includes connection elastic portion and filling part；
Connect elastic portion has opposite third end and the 4th end along the extending direction for presetting axis, connects the interior of elastic portion
There is hollow hole, filling part to be located in hollow hole in portion, and the opposite both ends of filling part are connect with third end and the 4th end respectively, are filled out
Filling has gap between portion and the inner wall of hollow hole；
The side wall for connecting elastic portion has tie point, and two neighboring connection elastic portion connected by tie point, third end and
First end is bonded, and the 4th end is bonded with second end.
In an embodiment of the present invention：
It includes two sub- elastic components to connect elastic portion, and two sub- elastic components are in mirror symmetry, and elastic part is along default axis
Direction on interval be convexly equipped with multiple tie points；
When bone expansion structure is in expansion state, elastic part round along the direction for presetting axis has far from filling
The concave section of the parantheses section in portion and close filling part, parantheses section limit tie point；
When bone expansion structure is in compressive state, two sub- elastic components are mutually drawn close.
In an embodiment of the present invention：
The outer profile of filling part is corresponding with elastic part, and filling part corresponds to parantheses section and offers through-hole.
Technical scheme of the present invention at least has the advantages that：
A kind of bone expansion structure provided by the invention, the bone expansion structure effectively can be expanded and be supported to centrum,
And the stress that generation is squeezed between centrum can be absorbed.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is structural schematic diagram of the bone expansion structure under the first visual angle in the embodiment of the present invention 1；
Fig. 2 is structural schematic diagram of the bone expansion structure under the second visual angle in the embodiment of the present invention 1；
Fig. 3 is structural schematic diagram of the first elastic dilatation part under the first visual angle in the embodiment of the present invention 1；
Fig. 4 is structural schematic diagram of the first elastic dilatation part under the second visual angle in the embodiment of the present invention 1；
Fig. 5 is structural schematic diagram of the second elastic dilatation part under the first visual angle in the embodiment of the present invention 1；
Fig. 6 is structural schematic diagram of the second elastic dilatation part under the second visual angle in the embodiment of the present invention 1.
Icon：10- bone expansion structures；11- the first elastic dilatation parts；12- the second elastic dilatation parts；71- thirds end；72-
4th end；73- parantheses sections；The concave sections 74-；81- first ends；82- second ends；83- extends out section；84- invagination sections；90- fillings are empty
Between；The first elastic components of 110-；The second elastic components of 120-；1100- elastic strips；1101- connectors；1200- connection elastic portions；
1201- filling parts.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "lower" is base
In orientation or positional relationship shown in the drawings or the invention product using when the orientation or positional relationship usually put, only
It is that for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must have specifically
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " the
Two " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can be
Mechanical connection, can be directly connected, can also can be indirectly connected through an intermediary the connection inside two elements.
For the ordinary skill in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be on or below second feature
Be in direct contact including the first and second features, can also include the first and second features not be in direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature second spy
Right over sign and oblique upper, or be merely representative of fisrt feature level height and be higher than second feature.Fisrt feature second feature it
Under, lower section and fisrt feature included below are immediately below second feature and obliquely downward, or be merely representative of fisrt feature level height
Less than second feature.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Embodiment 1
The present embodiment provides a kind of bone expansion structure 10, which effectively can be expanded and be propped up to centrum
Support, and the stress that generation is squeezed between centrum can be absorbed.
It please refers to Fig.1 and Fig. 2, Fig. 1 shows concrete structure of the bone expansion structure 10 under the first visual angle in the present embodiment,
Fig. 2 shows concrete structure of the bone expansion structure 10 under the second visual angle in the present embodiment.
Bone expansion structure 10 includes the first elastic dilatation part 11 and the second elastic dilatation part 12.It should be noted that this reality
It applies in example, bone expansion structure 10 includes the first elastic dilatation part 11 and the second elastic dilatation part 12, in other specific embodiment parties
In formula, bone expansion structure 10 can also include third elastic dilatation part and the 4th elastic dilatation part etc., " third ", " the 4th " purport
Explaining that bone expansion structure 10 is multilayered structure.
It should be noted that in specifically used bone expansion structure 10.Its effect is to expand vertebra by the deformation of itself
Body reaches corpus vertebrae replacement and support effect steady in a long-term, and bone expansion structure 10 is an elastomer in itself, has resilience
The stress generated when centrum squeezes can be absorbed.
Wherein, show that the first elastic dilatation part 11 is under the first visual angle in the present embodiment incorporated by reference to Fig. 3 and Fig. 4, Fig. 3
Concrete structure, Fig. 4 show concrete structure of the first elastic dilatation part 11 under the second visual angle in the present embodiment.
First elastic dilatation part 11 includes the first elastic component 110, and multiple first elastic components 110 connect successively around default axis
It connects, the filling space 90 of 11 end face of the first elastic dilatation part of perforation is limited between multiple first elastic components 110.It needs to illustrate
It is that default axis does not show that in figure.
Show that the second elastic dilatation part 12 is specific under the first visual angle in the present embodiment incorporated by reference to Fig. 5 and Fig. 6, Fig. 5
Structure, Fig. 6 show concrete structure of the second elastic dilatation part 12 under the second visual angle in the present embodiment.
Second elastic dilatation part 12 includes the second elastic component 120, and multiple second elastic components 120 connect successively around default axis
It connects, in Fig. 1 and Fig. 2, the second elastic dilatation part 12 is located at side of the first elastic dilatation part 11 far from default axis.
It should be noted that the first elastic component 110 and the second elastic component 120 are made by elastic material, further, by
Elastic metallic is made.In the present embodiment, the first elastic component 110 and the second elastic component 120 are a kind of hyperelastic Nitinols,
It can carry out holder deformation reset by temperature to control.
Bone expansion structure 10 is configured to have under the resilient force of the first elastic component 110 and the second elastic component 120
Compressive state and expansion state, wherein compressive state：Multiple first elastic components 110 and multiple second elastic components 120 are to default axis
Line is drawn close.Expansion state：Multiple first elastic components 110 and multiple second elastic components 120 expand on the direction far from default axis
It opens and the volume for filling space 90 increases.It should be noted that in expansion state, it is increased for filling 90 volume of space
Description is intended to compare with when it is in compressive state, fills the volume in space 90.
Shape of the bone expansion structure 10 in compressive state is shown in FIG. 1, is respectively illustrated in Fig. 3 and Fig. 5
One elastic dilatation part 11 and the second elastic dilatation part 12 correspond to shape when compressive state.
Shape of the bone expansion structure 10 in expansion state is shown in FIG. 2, is respectively illustrated in Fig. 4 and Fig. 6
One elastic dilatation part 11 and the second elastic dilatation part 12 correspond to shape when expansion state.
Specifically, in the present embodiment, on the cross section of the first elastic dilatation part 11, multiple first elastic components 110 are around pre-
The distribution if axis is centrosymmetric, on the cross section of the second elastic dilatation part 12, multiple second elastic components 120 are around default axis
Be centrosymmetric distribution.The design being distributed by central symmetry, be conducive to the first elastic component 110 and the second elastic component 120 by
Power is uniform and improves stability.
Further, when bone expansion structure 10 is in compressive state, wall surface of second elastic component 120 close to default axis
It is close to the wall surface of the first elastic component 110.
When bone expansion structure 10 is in expansion state, wall surface and first bullet of second elastic component 120 close to default axis
Property part 110 between have gap.Due in expansion state, between having between the second elastic component 120 and the first elastic component 110
Gap so that bone expansion structure 10 has the expansive space of bigger.
It please refers to Fig.3 and Fig. 4, the first elastic component 110 includes elastic strip 1100 and connector 1101.
Elastic strip 1100 has opposite first end 81 and second end 82, multiple connectors along the extending direction of default axis
1101 are respectively arranged at two opposite sides of first end 81 and opposite two sides of second end 82, two neighboring elastic strip
It is connected by connector 1101 between 1100.It is attached by connector 1101 so that between two neighboring elastic strip 1100
With gap, so as to which in expansion state, each elasticity physical efficiency is expanded in respective radial direction, and, it is compressing
Under state, it can be drawn close.
Specifically, two opposite sides of first end 81 are respectively set there are two connector 1101, two connectors 1101
Extension is tilted on the direction of second end 82 from first end 81, the first elastic component 110 is in symmetrically to set along the center line of elastic strip 1100
It sets.
Further, to further improve the effect of expansion, when bone expansion structure 10 is in expansion state, elastic strip
1100, in meandering shape and along the extending direction round of default axis with section 83 and invagination section 84 is extended out, extend out section 83 against second
Elastic component 120 has gap between section 84 of invaginating and the second elastic component 120, when bone expansion structure 10 is in compressive state, the
One elastic dilatation part 11 is cylindrical.When being converted to compressive state by expansion, elastic strip 1100 is on the direction of default axis
Length can be long compared with compressive state, still, when compressive state is converted to expansion state, elastic strip 1100 when expansion state compared with
The distance of default axis is more than distance when compressive state, and the presence due to extending out section 83 and section 84 of invaginating so that first
Elastic dilatation part 11 can be changed between compressive state and expansion state easily, also, due to extend out section 83 with it is interior
Fall into the presence of section 84 so that can more effectively the second elastic dilatation of centrum pair part 12 be supported by extending out section 83.
In being originally embodiment, when bone expansion structure 10 is in expansion state, elastic strip 1100 is in meandering shape and along pre-
It extends out section 83, invagination section 84 if the extending direction of axis has successively and extends out section 83.
Fig. 5 and Fig. 6 are please referred to, the second elastic component 120 includes connection elastic portion 1200 and filling part 1201.
The extending direction that elastic portion 1200 is connected along default axis has opposite third end 71 and the 4th end 72, connects bullet
Property portion 1200 inside there is hollow hole, filling part 1201 is located in hollow hole, the opposite both ends of filling part 1201 respectively with
Third end 71 and the connection of the 4th end 72, have gap between filling part 1201 and the inner wall of hollow hole.
There is the side wall for connecting elastic portion 1200 tie point, two neighboring connection elastic portion 1200 to be connected by tie point,
Third end 71 is bonded with first end 81, and the 4th end 72 is bonded with second end 82.It is bonded with first end 81 by third end 71, the 4th
End 72 is bonded with second end 82 so that the first elastic dilatation part 11 and the second elastic dilatation part 12 are with its opposite end (first
End 81 and third end 71, the 4th end 72 and second end 82) it is expansion basic point, the part between end face extends out, causes opposite
Both ends are close to each other.Wherein, it should be noted that in the present embodiment, third end 71 is solid by laser welding with first end 81
Fixed, the 4th end 72 is also fixed for laser welding with second end 82.In other specific implementation modes, third end 71 and first end
81, the 4th end 72 can also be attached fixation by other means with second end 82.
It should be noted that two adjacent connection elastic portions 1200 are connected by tie point, that is, two neighboring company
Connect between elastic portion 1200 that there are gaps mutually to lean on so that two adjacent connection elastic portions 1200 can be compressed
Hold together, so as to reduce volume, when expanding outwardly, the gap between two neighboring connection elastic portion 1200 becomes larger.
Specifically, connection elastic portion 1200 includes two sub- elastic components, and two sub- elastic components are in mirror symmetry, elastic part
Interval is convexly equipped with multiple tie points along the direction for presetting axis.
When bone expansion structure 10 is in expansion state, elastic part round along the direction for presetting axis has separate fill out
It fills the parantheses section 73 in portion 1201 and close to the concave section 74 of filling part 1201, parantheses section 73 limits tie point, expands and ties when bone
When structure 10 is in compressive state, two sub- elastic components are mutually drawn close.
Wherein, in the present embodiment, elastic part has parantheses section 73, concave section 74 successively along the direction for presetting axis
And parantheses section 73, that is, be attached by two tie points between two neighboring elastic part.
Wherein, it is the tensile strength enhanced under expansion state, and in compressive state, further compression volume, is filled
The outer profile in portion 1201 is corresponding with elastic part, and filling part 1201 corresponds to parantheses section 73 and offers through-hole, passes through elastic metallic
Elastic characteristic so that in compressive state, the through-hole of filling part 1201 can be closed.It should be noted that working as bone expansion structure
10 be in expansion state when, extend out section 83 and be resisted against on filling part 1201.
It should be noted that in the present embodiment, filling space 90 is the first elastic dilatation part of perforation 11 and the second elasticity
Two opposite end faces of expansion part 12, and when bone expansion structure 10 is in expansion state, 12 court of the second elastic dilatation part
To opposite two profiles being open in filling space 90 in necking state.
Inventor devises above-mentioned bone expansion structure 10, which effectively can be expanded and be propped up to centrum
Support, and the stress that generation is squeezed between centrum can be absorbed.Bone expansion structure 10 includes the first elastic dilatation part 11 and second
Elastic dilatation part 12.Wherein, the first elastic dilatation part 11 includes multiple first elastic components 110, and by multiple first elastic components 110
It is sequentially connected around default axis made of surrounding, the second elastic dilatation part 12 includes multiple second elastic components 120, and by multiple the
Two elastic components 120 are sequentially connected around default axis surround made of.Wherein, the first elastic component 110 and the second elastic component 120 have
It is flexible, pass through its elastic force so that there are two states for the tool of bone expansion structure 10, that is, compressive state and expansion state.Specifically
Ground, when bone expansion structure 10 is in compressive state, multiple first elastic components 110 and multiple second elastic components 120 are to default axis
Line is drawn close.When bone expansion structure 10 is in expansion state, multiple first elastic components 110 and multiple second elastic components 120 are to remote
The first elastic dilatation part of perforation 11 opposite two is formed on direction from default axis between expansion and multiple first elastic components 110
The expansion cavity at end.At this point, can clearly learn, the bone expansion structure 10 in compressive state is than the bone expansion in expansion state
Structure 10 it is small.When actually using the bone expansion structure 10, the bone in compressive state is expanded by sting device
Structure 10 is transported in corpus vertebrae, and when bone expansion structure 10 is between centrum, control bone expansion structure 10 makes it be converted into expansion
The state of opening (in the present embodiment, due to the characteristic of the material of bone expansion structure 10 itself, it can be formed and be expanded by the variation of temperature,
In other specific implementation modes, can control bone expansion structure 10 by other means and be expanded), the first bullet after expansion
Property part 110 and the second elastic component 120 expansion support carried out to centrum, and be implanted into filler to filling space 90.Due to by filling out
Fill the effect of object and elastic force so that bone expansion structure 10 effectively can be filled support to centrum.Further, bone expands
It opens structure 10 and centrum is expanded by the deformation of itself, reach corpus vertebrae replacement and support effect steady in a long-term, and bone expansion knot
Structure 10 is an elastomer in itself, and the stress generated when centrum squeezes is absorbed with resilience performance.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of bone expansion structure, which is characterized in that including：
First elastic dilatation part, the first elastic dilatation part include：
First elastic component, multiple first elastic components are sequentially connected around default axis, are limited between multiple first elastic components
Surely the filling space of the first elastic dilatation part end face is penetrated through；And
Second elastic dilatation part, the second elastic dilatation part include：
Second elastic component, multiple second elastic components are sequentially connected around the default axis；
The second elastic dilatation part is located at side of the first elastic dilatation part far from the default axis, the bone expansion
Structure is configured to have under the resilient force of first elastic component and the second elastic component：
Compressive state, multiple first elastic components and multiple second elastic components are drawn close to the default axis；And
Expansion state, multiple first elastic components and multiple second elastic components are on the direction far from the default axis
It expands and the volume in the filling space increases.
2. bone expansion structure according to claim 1, it is characterised in that：
On the cross section of the first elastic dilatation part, multiple first elastic components are centrosymmetric around the default axis
Distribution；
On the cross section of the second elastic dilatation part, multiple second elastic components are centrosymmetric around the default axis
Distribution.
3. bone expansion structure according to claim 1, it is characterised in that：
When the bone expansion structure is in the compressive state, second elastic component is tight close to the wall surface of the default axis
Paste the wall surface of first elastic component；
When the bone expansion structure is in the expansion state, second elastic component close to the default axis wall surface with
There is gap between first elastic component.
4. bone expansion structure according to claim 1, it is characterised in that：
First elastic component includes elastic strip and connector；
The elastic strip has opposite first end and second end along the extending direction of the default axis；
Multiple connectors are respectively arranged at two opposite sides of the first end and opposite two sides of the second end
Face；
It is connected by the connector between the two neighboring elastic strip.
5. bone expansion structure according to claim 4, it is characterised in that：
Two opposite sides of the first end are respectively set there are two the connector, and two connectors are by described first
It holds to tilt on the direction of the second end and extend；
First elastic component is symmetrical set along the center line of the elastic strip.
6. bone expansion structure according to claim 5, it is characterised in that：
When the bone expansion structure is in the expansion state, the elastic strip prolonging in meandering shape and along the default axis
It stretches direction round and has and extend out section and invagination section, the section that extends out is against second elastic component, the invagination section and described the
There is gap between two elastic components；
When the bone expansion structure is in the compressive state, the first elastic dilatation part is cylindrical.
7. bone expansion structure according to claim 6, it is characterised in that：
When the bone expansion structure is in the expansion state, the elastic strip prolonging in meandering shape and along the default axis
It stretches direction successively and has and described extend out section, the invagination section and described extend out section.
8. bone expansion structure according to claim 7, it is characterised in that：
Second elastic component includes connection elastic portion and filling part；
The connection elastic portion has opposite third end and the 4th end, the connection bullet along the extending direction of the default axis
Property portion inside there is hollow hole, the filling part is located in the hollow hole, the opposite both ends of the filling part respectively with
The third end is connected with the 4th end, has gap between the filling part and the inner wall of the hollow hole；
There is the side wall of the connection elastic portion tie point, the two neighboring connection elastic portion to be connected by the tie point,
The third end is bonded with the first end, and the 4th end is bonded with the second end.
9. bone expansion structure according to claim 8, it is characterised in that：
The connection elastic portion includes two sub- elastic components, and two elastic parts are in mirror symmetry, the elastic part edge
Interval is convexly equipped with multiple tie points on the direction of the default axis；
When the bone expansion structure is in the expansion state, elastic part round along the direction of the default axis
Concave section with parantheses section and the close filling part far from the filling part, the parantheses section limit the connection
Point；
When the bone expansion structure is in the compressive state, two elastic parts are mutually drawn close.
10. bone expansion structure according to claim 9, it is characterised in that：
The outer profile of the filling part is corresponding with the elastic part, and the filling part corresponds to the parantheses section and offers through-hole.
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| CN108670394B (en) | 2024-04-19 |
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