CN110025371A - Vertebral bone fills support device - Google Patents
Vertebral bone fills support device Download PDFInfo
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- CN110025371A CN110025371A CN201910382736.2A CN201910382736A CN110025371A CN 110025371 A CN110025371 A CN 110025371A CN 201910382736 A CN201910382736 A CN 201910382736A CN 110025371 A CN110025371 A CN 110025371A
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- pipe portion
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- protrusion
- support device
- central pipe
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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
- A61B17/7071—Implants for expanding or repairing the vertebral arch or wedged between laminae or pedicles; Tools therefor
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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
- A61B17/7094—Solid vertebral fillers; devices for inserting such fillers
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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
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
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- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The present invention provides a kind of vertebral bones to fill support device, comprising: implantation piece comprising a central pipe portion and multiple surrounding protrusions, described central pipe portion one end are cecum, and the other end is inlet；In the centrally disposed pipe portion main body of surrounding's protrusion, and multiple surrounding protrusions are circumferentially in divergent shape distribution along central pipe portion outer wall；Surrounding protrusion inner cavity is connected to central pipe portion inner cavity；The center line of the center pipe portion is straight line or camber line；The material of the central pipe portion main body and surrounding protrusion is soft elastic material, and when Xiang Zhongyang pipe portion inner cavity applies pressure, surrounding protrusion can expand stretching, extension and form support construction.It is difficult fracture site uniformly strutting the drawbacks of being resetted to all directions to solve existing product.The invention enables the percolation ratios of bone cement to be reduced to zero, reduces the generation of the osteonecrosis caused by there is thermal damage because of bone cement for the perfusion of agglomerate, and the vertebral height that soleplate collapses on the maximally efficient directional recovery of energy.
Description
Technical field
The present invention relates to bone cement engineering device technique field, in particular to a kind of vertebral bone fills support device.
Background technique
Current China is in the flourishing age of economic development, the attention of increasingly aging and people to quality of life of population,
Osteoporosis has been concerned, while having become global public health problem.Osteoporotic vertebral fracture
(osteoporotic vertebral compression fractures, OVCF) is the most common complication of osteoporotic
One of, while being also the major reason for causing the elderly disabled and dead.For compression fracture of vertabral body, traditional treatment is still to protect
Based on keeping, including bed, analgesic, wearing chest waist brace etc., it is abnormal that 84% patient will leave acute and chronic chest flank pain, backbone
Shape etc. limits daily life, influences spinal function, reduces quality of life.And operative treatment is selected, previous pedicle screw is solid
Determine to cause holding power insufficient because of patient's osteoporosis, the loosening for screw occur and Unstable internal fixation is easy to, although in recent years
Most scholars have developed bone cement screw treatment treatment of multiple osteoporotic spinal fractures fracture, and new hope is brought to patient, but most
Patient can not be resistant to anesthesia because merging internal disease, and yield the operative treatment of interior fixation.
For such patient, under local anaesthesia percutaneous vertebroplasty (PVP) and balloon kyphoplasty (PKP) be at present most
To generally acknowledge the invasive methods for effectively treating OVCF, however there is higher bone cement percolation ratio in this 2 kinds of art formulas, according to the literature
The former percolation ratio is 11%~76% respectively, and the latter is about 4.8%~39.0%.For the percolation ratio hair for further decreasing bone cement
It is raw, operation safety is improved, push-in bone cement forms blister cavities after going to toward the expansion for first carrying out former, bone cement low pressure is infused
Enter, convex plasty (Balloon-kyphoplasty, BKP) the Mark Reiley invention in 1994 after Kyphon sacculus earliest,
FDA in 1998 ratifies its clinical application and is expanded by hydraulic system indirectly-acting, resets the centrum that compression collapses, and manufactures cavity,
Belong to soft expansion, expansion is not easy to orient.Sky bone is made using high molecular material in Disc-O-Tech company, Israel invention in 2004
Convex plasty (Sky-bone expander kyphoplasty, EKP), is packed into the front art of cylindrical expander after expander
Middle wrinkle are folded to be gone out to be expanded, and for rigidity expansion, can be oriented, the disadvantage is that: the position after expanded height finite extension cannot change
Become, height is unadjustable, and shape is in " mulberry fruit " after expansion, therefore restores slightly higher to centrum middle height, and then the convex angle Cobb improves not
It is good.New type bone pouch filling centrum molding (Vesselplasty) technology has been invented by A-Spine company in 2007, and 2013 formal
China is introduced after obtaining the certification of China's food and medicine surveillance authority.The Vessel-X pouch tucker that the technology uses is by high score
Sub- material is interlaced to be woven into net bag shape structure, can reach the purpose of expansion by the way that sticky bone cement is directly perfused i.e.,
Fine and close macromolecule net-layer structure can wrap up most of bone cement, and a small amount of bone cement is only allowed to be seeped into except stratum reticulare, this
Sample can be effectively controlled the generation of bone cement leakage, its percolation ratio is still 1.7%~54.5%, Er Qieyou according to the literature
It is oozed out outward in the limitation cement of mesh bag, hinders microcosmic strand between bone cement and bone trabecula to lock, net occurs in postoperative and document report
The loosening of marsupial bone cement group is simultaneously free on outside centrum, and secondly mesh bag bone cement still exists in centrum with the state of agglomerate, office
Temperature is excessively high when portion's intensity and polymerization reaction, and the polymerization exotherm reaction temperature of bone cement is up to 47 DEG C -100 DEG C according to the study, high temperature
Lead to vertebral bone meronecrosis, the thickness of bone cement polymerization exotherm and bone cement is there are certain relationship, and bone cement is thicker, release
Heat is more.
Bone cement leakage is that minimally-invasive treatment compression fracture of spine is most common and one of the complication of consequence most serious, bone water
Mud wire drawing phase and agglomerate phase push-in reduce leakage, but the disperse for bone cement occur is uneven, so that postoperative perfusion segment office
Portion's formation mechanical gradient is poor, easily occurs that segment cortical bone is not perfused and neighbouring section centrum fractures again, and bone water
Mud formed in centrum agglomerate occur bone cement shift again it is commonplace.Secondly the toxic reaction of bone cement, allergy and shock
Deng.
So far, formation system all on Vehicles Collected from Market makes to inject bone cement leakage, Cheng Tuanzhuan uneven distribution,
Thermal damage, toxic reaction and the displacement of later period bone cement etc. are current spinal vertebral plastic operations in the presence of main in the urgent need to address
The problem of.
Summary of the invention
It is an object of the present invention to provide a kind of vertebral bone fill support device, the device can completely solve bone cement leakage and
Toxic reaction, and its displacement is reduced, and perfusion slurry is evenly distributed, it reduces because the perfusion that bone cement is agglomerate occurs
The generation of osteonecrosis caused by thermal damage, and the vertebral height that soleplate collapses on the maximally efficient directional recovery of energy, and bone cement shape
At the good apparatus system of similar bone trabecula columnar stays uniform force.
In order to realize that above-mentioned task, the present invention take following technical solution:
A kind of vertebral bone filling support device, comprising:
Implantation piece comprising a central pipe portion and multiple surrounding protrusions, described central pipe portion one end is cecum, another
End is inlet；In the centrally disposed pipe portion main body of surrounding's protrusion, and multiple surrounding protrusions are outside central pipe portion
Wall is circumferentially in divergent shape distribution；Surrounding protrusion inner cavity is connected to central pipe portion inner cavity；
The material of the central pipe portion main material and surrounding protrusion is soft elastic material, in Xiang Zhongyang pipe portion
When chamber applies pressure, surrounding protrusion can expand stretching, extension and form support construction.
As a further improvement of the present invention, the inlet is through injection fillers perfusion slurry in the central pipe portion
When, perfusion slurry is protruded into after pushing the surrounding protrusion expansion and is cured in skeletal tissue.
As a further improvement of the present invention, the central pipe portion is column structure, and the surrounding protrusion is rotary table knot
Structure, surrounding protrusion one end are cecum, and the other end is open end, and open end is connect with central pipe portion.
As a further improvement of the present invention, the surrounding protrusion is arranged circumferentially cyclization along the central pipe portion
Shape, cricoid surrounding protrusion are evenly arranged along the axial direction of the central pipe portion.
As a further improvement of the present invention, surrounding's protrusion of adjacent annular, which misplaces, arranges.
As a further improvement of the present invention, the center line of the central pipe portion is straight line；The center pipe portion is placed in not
The wall thickness of surrounding's protrusion of fracture tissue side is greater than the wall thickness for being placed in protrusion around side at fracture gap cavity.
As a further improvement of the present invention, the center line of the central pipe portion is camber line；Wherein, surrounding protrusion includes
Outer curvature and inner curve, surrounding's protrusion wall thickness of outer curvature are less than surrounding's protrusion wall thickness of inner curve.
As a further improvement of the present invention, further includes:
Auxiliary positioning part comprising positioning core and card-tight part, card-tight part setting is in positioning core end；The cecum
Inner wall is provided with card slot, after auxiliary positioning part protrudes into central pipe portion inner cavity, card-tight part and cecum interior contact, and rotational positioning core
Portion, card-tight part can be locked with card slot.
As a further improvement of the present invention, the implantation piece further include: development snap ring, development snap ring setting is in described
It is held before, during and after the pipe portion outer wall of centre.
As a further improvement of the present invention, the inlet inner wall is provided with internal screw thread.
Compared with prior art, the invention has the following advantages:
Vertebral bone of the invention fills support device, and surrounding's protrusion of implantation piece is in hollow structure, with central pipe portion
Face connection, the protrusion around central pipe portion setting multi-turn, the soft bullet of the central pipe portion main body and surrounding protrusion
Property the inflatable expansion of material, when Xiang Zhongyang pipe portion inner cavity applies pressure, surrounding protrusion can expand stretching, extension and form support construction.
When being placed in centrum, implantation piece can be easily placed in the centrum of lesion through channel, surrounding's protrusion that cement can be open through side
Portion enters, and since the injection pressure at rear gradually increases, gradually expansion stretching, extension forms the column of class bone trabecula around mesotube
In shape extension and skeletal tissue；Uniform trapezoidal columnar stays are formed after subsequent bone cement ossification.The week of the divergent shape of implantation piece
It encloses leakage when protrusion solves bone cement perfusion to occur, so that the percolation ratio of bone cement is reduced to zero；It solves simultaneously existing
Formation system injects the shortcomings that bone cement of centrum is at bulk uneven distribution, and class bone trabecula is formed such that perfusion slurry distribution is equal
It is even, under, rear end wall portion thicken so that be perfused slurry to before protrusion around, upper end flow, to the centrum front middle part of fracture
It collapses gradually Cylindrical Homogeneous support and carries out active homing correction kyphosis deformity；It is uniformly distributed by bone cement and reduces lesion centrum
Local mechanical gradient presence, greatly reduce postoperative lesion centrum and fracture and the loss of height and neighbouring occur again
The risk that segment centrum fractures.Existing crumby bone cement is solved replaced surrounding's protrusion by divergent shape
The thermal damage that polymerization reaction occurs when cement clusters distribution, reduces the thermal damage of cement clusters initiation.
Further, before the device center tube wall portion in after have three metal lines through perspective determine be located at centrum middle line it is to the front
When position, when bone cement being directly perfused through central pipe portion, convenient for positioning and instrument tracing study.
Further, the device is in the trapezoidal columnar wall portion of bone trabecula forming portion close to centrum lower end and rear with a thickness of preceding
1 times with upper end is held, when the meaning of the design is to inject bone cement, is easy to swollen positioned at the surrounding of front end and upper end protrusion
Swollen, pressure is higher than lower end and rear, because the compression fracture of centrum is frequently experienced in collapsing for centrum front middle part and upper soleplate, causes
Above fractured vertebral body and the density of the cortical bone in front is higher than the non-fractures of remaining centrum, the expansion root of surrounding protrusion forming portion
It is distributed according to centrum internal pressure, the oriented trend lower than zone broadening, lower end and rear end wall portion thicken and force bone cement flow direction easy
The protrusion around the upper end and front end of expansion is difficult fracture site to solve all products currently on the market to each
Direction uniformly struts the drawbacks of being oriented reset.
Further, surrounding protrusion is interspersed to form gap, is conducive to bone trabecula remaining in centrum and is deposited in gap
It is interior, vertebral bone filling support device is stabilized in centrum after union, reduces the later period because patient activity squeezes initiation bone water
The generation of loosening and the displacement of mud.
Detailed description of the invention
Fig. 1 is that vertebral bone of the present invention fills support device diagrammatic cross-section；
Fig. 2 is that vertebral bone of the present invention fills the schematic diagram (linear type) after support device expansion stretching, extension；
Fig. 3 is that vertebral bone of the present invention fills the schematic diagram (flexure type) after support device expansion stretching, extension；
Fig. 4 is that vertebral bone of the present invention fills partial sectional view (flexure type) after support device expansion stretching, extension；
Fig. 5 is that vertebral bone of the present invention fills support device expansion stretching, extension rear end schematic diagram (cecum)；
Fig. 6 is that vertebral bone of the present invention fills partial sectional view (size marking) after support device expansion stretching, extension；
Fig. 7 is that vertebral bone of the present invention fills support device implantation vertebral body operation state diagram；
Fig. 8 is that vertebral bone of the present invention fills support device implantation centrum schematic internal view (single linear type)；
Fig. 9 is that vertebral bone of the present invention fills support device implantation centrum schematic internal view (two linear types)；
Figure 10 is that vertebral bone of the present invention fills support device implantation centrum schematic internal view (single flexure type)；
Wherein, 100 be implantation piece, and 101 be surrounding protrusion, and 102 be central pipe portion, and 103 be development snap ring, and 104 be note
Entrance, 105 be cecum, and 106 be card slot；1011 be outer curvature, and 1012 be inner curve；200 be auxiliary positioning part, and 201 are
Core is positioned, 202 be card-tight part；300 be perfusion slurry, and 400 be centrum, and 401 is at fracture gap cavitys, and 402 do not fracture group
It knits, 500 be bone cement injector part.
Specific embodiment
Invention is further described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figures 1 to 6, a kind of vertebral bone of the present invention fills support device, comprising:
Implantation piece 100 comprising a central pipe portion 102 and multiple surrounding protrusions 101, the central pipe portion 102 1
End is cecum 105, and the other end is inlet 104；In centrally disposed 102 main body of pipe portion of surrounding's protrusion 101, and it is more
A surrounding protrusion 101 is circumferentially in divergent shape distribution along central 102 outer wall of pipe portion；101 inner cavity of surrounding protrusion and central pipe portion
The connection of 102 inner cavities；The center line of the center pipe portion 102 is straight line or camber line；
The material of 102 main body of central pipe portion and surrounding protrusion 101 is soft elastic material, Xiang Zhongyang pipe portion
When 102 inner cavities apply pressure, surrounding protrusion 101 can expand stretching, extension and form support construction.The inlet 104 is filled out through injection
Grout material 300 is charged when in the central pipe portion 102, perfusion slurry 300 is pushed after the surrounding protrusion 101 expands and protruded into
And it is cured in skeletal tissue.Leakage when surrounding's protrusion of the divergent shape of implantation piece solves bone cement perfusion occurs, so that
The percolation ratio of bone cement is reduced to zero；The bone cement of existing formation system injection centrum is solved simultaneously into bulk uneven distribution
The shortcomings that, surrounding protrusion 101 is that class trabecular bone structure makes perfusion slurry be evenly distributed.
Preferably, the central pipe portion 102 is column structure, and the surrounding protrusion 101 is frustum cone structure, surrounding protrusion
101 one end of portion is cecum, and the other end is open end, and open end is connect with central pipe portion 102.Cement from the bottom of frustum cone structure to
Top diffusion, convenient for flowing and expansion.
Preferably, the surrounding protrusion 101 being arranged circumferentially circlewise along the central pipe portion 102, it is cricoid
Surrounding protrusion is evenly arranged along the axial direction of the central pipe portion 102.
Preferably, surrounding's protrusion of adjacent annular, which misplaces, arranges.
Preferably, the wall thickness for surrounding's protrusion that the central pipe portion 102 is placed in 402 side of tissue of not fracturing, which is greater than, to be placed in
At fracture gap cavity around 401 sides protrusion wall thickness.When injecting bone cement, positioned at the surrounding of front end and upper end protrusion
101 are easy to expand, and pressure is higher than lower end and rear.The expansion of surrounding protrusion 101 is distributed according to centrum internal pressure, oriented low
In the trend of zone broadening, lower end and rear end wall portion thicken the upper end for forcing bone cement flow direction to be easy to expand and head forming section into
Row distraction reduction is difficult fracture site uniformly strutting the drawbacks of being resetted to all directions to solve existing product.
Preferably, further includes:
Auxiliary positioning part 200 comprising positioning core 201 and card-tight part 202, the setting of card-tight part 202 is in positioning core 201
End；105 inner wall of cecum is provided with card slot 106, after auxiliary positioning part 200 protrudes into central 102 inner cavity of pipe portion, card-tight part
202 can be locked with 105 interior contact of cecum, rotational positioning core 201, card-tight part 202 with card slot 106.It send to default
Behind position, rotational positioning core 201, card-tight part 202 can be unlocked with card slot 106, exit auxiliary positioning part 20.
Preferably, the implantation piece 100 further include: development snap ring 103, the setting of development snap ring 103 is in the central pipe portion
It is held before, during and after 102 outer walls.To ensure to be implanted into the optimum position of the device.
Preferably, 104 inner wall of inlet is provided with internal screw thread.Convenient for carrying out screw thread company with bone cement injector part
It connects.
Embodiment 1
As shown in Figure 1, Figure 2 and shown in Fig. 5, a kind of vertebral bone filling support device, implantation piece 100 and auxiliary including elasticity are fixed
Position part 200；Central 102 integral outer structure of pipe portion is the cylindric hollow structure of diameter about 5.0mm；Surrounding protrusion 101 is ladder
Shape cylindrical hollow structure (frustum cone structure), one end are cecum, another end opening is connect with central 102 inner face of pipe portion, are surrounded
Pipe portion 102 circumferential circle in centre is provided with 10 surrounding protrusions 101, and a total of 7 circle total length is 25cm or so, vertebral bone when merging
The hollow fold of support device is filled at internal orifice, the channel that underwent operative opens expansion can be easily placed in the centrum of lesion；The device
The development snap ring 103 for thering are three metal lines to be made into before, during and after central 102 outer wall of pipe portion.The snap ring 103 that develops is had an X-rayed determining position
When centrum middle line position to the front, when perfusion slurry 300 (such as bone cement) is directly perfused in the inlet 104 through central pipe portion 102,
Its distal end be cecum 105, perfusion slurry 300 can enter side opening surrounding's protrusion 101, due to rear injection pressure by
It is cumulative plus, 70 surrounding protrusions 101 around central pipe portion 102, which gradually expands to stretch, to be formed class bone trabecula and extend into bone
In bone tissue；Uniform round table-like support is formed after subsequent bone cement solidification.
Auxiliary positioning part 200 includes positioning core 201 and card-tight part 202, and the setting of card-tight part 202 is at positioning 201 end of core
Portion, 105 side wall of cecum is provided with card slot 106, and after auxiliary positioning part 200 protrudes into central 102 inner cavity of pipe portion, card-tight part 202 is in
105 interior contact of cecum of pipe portion 102, rotational positioning core 201 are entreated, card-tight part 202 can be locked with card slot 106.It is logical
Crossing auxiliary positioning part 200 can make implantation piece 100 accurately be sent into the centrum 400 of lesion.202 main body of card-tight part is disk
Structure, disk are provided with the buckle cooperated with card slot 106.
Because the compression fracture of centrum is frequently experienced in collapsing for centrum front middle part and upper soleplate, cause above fractured vertebral body and
The density of the cortical bone in front is higher than the non-fractures of remaining centrum, therefore the device is being dashed forward close to around centrum lower end and rear
When the characteristics of wall thickness for playing portion 101 is 1 times of front end and upper end, the structure is to inject bone cement, positioned at front end and upper end
Surrounding protrusion 101 is easy to expand, and pressure is higher than lower end and rear.The expansion for surrounding's protrusion 101 that the present invention designs according to
The distribution of centrum internal pressure, the oriented trend lower than zone broadening, lower end and rear end wall portion, which thicken, forces bone cement flow direction to be easy to
The upper end of expansion and head forming section carry out distraction reduction, are difficult fracture site to solve existing product to all directions
Uniformly strut the drawbacks of being resetted.
Round table-like designs the principle so that the surrounding's protrusion 101 similar " jack " formed, and bottom major diameter is
The top 3.5mm minor diameter is 1.5mm, will play maximum support force and reset.There is 10 week around central pipe portion 1021 circle
It encloses protrusion 101 and dissipates extension around, having 7 circle total lengths is 27mm or so.
Distance is excessive between surrounding's protrusion 101 on adjacent turn in order to prevent, causes the non-uniform situation of support force, this
Surrounding's protrusion 101 of 2nd circle of invention design will integrally rotate clockwise 15 ° relative to previous circle, fill up prominent around the 1st circle
The gap between portion 101 is played, so that spacing structure span reduces between girder and girder, is uniformly distributed.
Embodiment 2
As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, a kind of vertebral bone of the present invention fills support device, overall structure and embodiment 1
Structure is identical, and difference is: central pipe portion 102 all strut after in micro-arc structure, 70 surrounding protrusions 101 are along mesotube
The axial camber arrangement in portion 102, the axis of central pipe portion 102 are parallel with 101 outside coronal-plane of surrounding protrusion.
Wherein, on the outer curvature 1011 of arcuate structure the wall thickness of surrounding protrusion be inner curve 1012 surrounding's protrusion
The half of portion's wall thickness.Outer curvature 1011 is correspondingly arranged at 401 at fracture gap cavity, and inner curve 1012 is arranged in non-bone
It rolls at tissue 402.
Slurry 300, which is perfused, to be bone cement, PMMA, CPC object etc..
As shown in fig. 6, large, medium and small three kinds of models can be set in vertebral bone filling support device of the invention, to adapt to difference
The operation demand of object, by taking medium size as an example, size is as follows:
A: total height 20mm；B: total length 27mm；C: central pipe diameter 4.0mm；D: central hollow pipe diameter 2.4mm；E:
101 basal diameter 3.5mm of surrounding protrusion；F: 101 cecum 1.5mm of surrounding protrusion；H: convex side class first lap bone trabecula and
Two circle bone trabecula spacing 4.8mm；G: concave side bone trabecula spacing 3.0mm；J: coaxial bone trabecula spacing is 4.9mm.
As shown in Fig. 7~10, a kind of vertebral bone of the present invention fills support device, and application method is as follows:
1. it can be easily placed in the centrum 400 of lesion through tube channel used in current clinical use vertebroplasty, it should
There is the development snap ring 103 of the titanium alloy of development after in front of device respectively, to ensure to be implanted into the optimum position of the device, when centre
Snap ring projected on P-A Cephalomatrics it is Chong Die or close with the projected position of spinous process after, the nut at rotating channel rear exits central pipe portion
102 inner core 200.
2. ready bone cement is injected through central pipe portion 102 in cooperation bone cement injector part 500, bone cement way
When surrounding's protrusion 101 of 102 upper opening of diameter center pipe portion, slowly expansion, the principle first expanded will be gradually opened at its fold
For soft materials, bone cement perfusion is that the tissue 402 of not fracturing that surrounding protrusion 101 encounters hardness, which can be got around, to be kept away to be Liquidity
It allows and extends 401 sprawling at i.e. fracture gap cavity to other soft tissues or gap, the bone trabecula that surrounding is not fractured is cut
It cuts smaller, forms pyramidal structure after inflatable；
Fig. 8 and Fig. 9 is the linear structure of embodiment 1, places a vertebral bone according to operation demand and fills support device
(Fig. 8) or two vertebral bone fillings support device (Fig. 9).
Figure 10 is the flexure mode structure of embodiment 2, and the crooked outline of implantation piece 100 is consistent with 400 arcuate structure of centrum.
3. with injecting for rear bone cement, around pressure in protrusion 101 gradually increase, because of lower section and rear
Trabecular bone structure cyst wall thickens, and the forming portion of Xiang Shangfang and front end is concentrated after pressure, by the soleplate of fracture and the centrum collapsed
Cortex support resets, and gradually forms and cured trapezoidal cylinder shape structure is inlayed in centrum bone tissue, between class bone trabecula column
Gap will by remaining fracture cancellous bone fill.The activity of the device has been entirely limited after union.
4. can be wherein such as bone cement (bone cement) using perfusion slurry 300, poly- methallyl acid methyl esters
(PMMA, poly methyl methacrylate), hydroxyapatite (HA, hydroxy apatite) can be used bone and take
Herein with no restriction for object (bone substitute), such as gypsum, calcium phosphate, calcium sulfate series etc.；
The present invention solves Railway Project existing for clinic, using above technical scheme, compared with prior art, have with
Under advantage and good effect:
1. leakage when being fully solved bone cement perfusion occurs, so that the percolation ratio of bone cement is reduced to zero；
2. solving the disadvantage that the bone cement of all formation system injection centrums in market into bulk uneven distribution, class bone
Girder is formed such that perfusion slurry is evenly distributed, under, rear end wall portion thicken so that be perfused slurry to before forming portion, upper end shape
It is flowed at portion, gradually Cylindrical Homogeneous support is collapsed to the centrum front middle part of fracture and carries out active homing correction kyphosis deformity；
3. being uniformly distributed the presence for reducing the local mechanical gradient of lesion centrum by bone cement, postoperative lesion centrum is again
The risk that the secondary loss that fracture and height occurs and neighbouring section centrum fracture.
4. crumby bone cement will will solve bone cement by 70 with a thickness of replaced protrusion 101 around 3.5mm
The thermal damage that polymerization reaction occurs when agglomerate is distributed, studies have found that the temperature of the thickness effect polymerization exotherm of bone cement, and
Bone cement does not have thermal damage in 5mm thickness, can then cause thermal damage more than 5mm；
5. the staggered distribution of surrounding protrusion 101 is conducive to bone trabecula remaining in centrum and is deposited in gap there are gap
It is interior, vertebral bone filling support device is stabilized in centrum after union, reduces the later period because patient activity squeezes initiation bone water
The generation of loosening and the displacement of mud；
6. the closed device of class bone trabecula completely solves bone cement monomer toxicity, allergy, inflammation, embolism etc. and human body
The adverse reaction of contact；
7. the device has non-leakage characteristic, all vertebral forming systems of existing market are broken because centrum rear wall is broken
Taboo bad, that imperfect person uses, the appearance of the product expand its indication；
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although referring to above-described embodiment pair
The present invention is described in detail, those of ordinary skill in the art still can to a specific embodiment of the invention into
Row modification perhaps equivalent replacement these without departing from any modification of spirit and scope of the invention or equivalent replacement, applying
Within pending claims of the invention.
Claims (10)
1. a kind of vertebral bone fills support device characterized by comprising
Implantation piece (100) comprising a central pipe portion (102) and multiple surrounding protrusions (101), the central pipe portion
(102) one end is cecum (105), and the other end is inlet (104)；Described surrounding's protrusion (101) the centrally disposed pipe portion
(102) in main body, and multiple surrounding protrusions (101) are circumferentially in divergent shape distribution along central pipe portion (102) outer wall；Surrounding protrusion
Portion (101) inner cavity is connected to central pipe portion (102) inner cavity；
The material of central pipe portion (102) main material and surrounding protrusion (101) is soft elastic material, Xiang Zhongyang
When pipe portion (102) inner cavity applies pressure, surrounding protrusion (101) can expand stretching, extension and form support construction.
2. vertebral bone according to claim 1 fills support device, which is characterized in that the inlet (104) is through injecting
When the center pipe portion (102) is interior, the surrounding protrusion (101) is pushed in perfusion slurry (300) for filling perfusion slurry (300)
It protrudes into and is cured in skeletal tissue after expansion.
3. vertebral bone according to claim 1 fills support device, which is characterized in that the center pipe portion (102) is column
Shape structure, the surrounding protrusion (101) are frustum cone structure, and surrounding protrusion (101) one end is cecum, and the other end is opening
End, open end are connect with central pipe portion (102).
4. vertebral bone according to claim 1 fills support device, which is characterized in that surrounding protrusion (101) edge
Center pipe portion (102) is arranged circumferentially circlewise, axis of the cricoid surrounding protrusion along the central pipe portion (102)
To being evenly arranged.
5. vertebral bone according to claim 4 fills support device, which is characterized in that surrounding's protrusion of adjacent annular is wrong
Position arrangement.
6. vertebral bone according to claim 1 fills support device, which is characterized in that in the center pipe portion (102)
Heart line is straight line；The wall thickness that the center pipe portion (102) is placed in surrounding's protrusion of tissue of not fracturing (402) side, which is greater than, to be placed in
At fracture gap cavity around (401) side protrusion wall thickness.
7. vertebral bone according to claim 1 fills support device, which is characterized in that in the center pipe portion (102)
Heart line is camber line；Wherein, surrounding protrusion (101) includes outer curvature (1011) and inner curve (1012), outer curvature
(1011) surrounding's protrusion wall thickness is less than surrounding's protrusion wall thickness of inner curve (1012).
8. vertebral bone according to any one of claims 1 to 7 fills support device, which is characterized in that further include:
Auxiliary positioning part (200) comprising positioning core (201) and card-tight part (202), card-tight part (202) are arranged in locating core
Portion (201) end；Described cecum (105) inner wall is provided with card slot (106), and auxiliary positioning part (200) protrudes into central pipe portion
(102) behind inner cavity, card-tight part (202) and cecum (105) interior contact, rotational positioning core (201), card-tight part (202) can
It is locked with card slot (106).
9. vertebral bone according to any one of claims 1 to 7 fills support device, which is characterized in that the implantation piece
(100) further include: development snap ring (103), development snap ring (103) setting are held before, during and after described central pipe portion (102) outer wall.
10. filling support device according to claim to 7 described in any item vertebral bones, which is characterized in that the inlet
(104) inner wall is provided with internal screw thread.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382736.2A CN110025371A (en) | 2019-05-09 | 2019-05-09 | Vertebral bone fills support device |
| PCT/CN2019/106791 WO2020224161A1 (en) | 2019-05-09 | 2019-09-19 | Vertebral-body bone filling and support apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382736.2A CN110025371A (en) | 2019-05-09 | 2019-05-09 | Vertebral bone fills support device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110025371A true CN110025371A (en) | 2019-07-19 |
Family
ID=67241680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910382736.2A Pending CN110025371A (en) | 2019-05-09 | 2019-05-09 | Vertebral bone fills support device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110025371A (en) |
| WO (1) | WO2020224161A1 (en) |
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| CN113317911A (en) * | 2021-06-04 | 2021-08-31 | 张丽君 | Pressure expansion type femoral stem |
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Also Published As
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| WO2020224161A1 (en) | 2020-11-12 |
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