CN109758273A - A kind of adjustable autostability lumbosacral segment artificial vertebral body - Google Patents
A kind of adjustable autostability lumbosacral segment artificial vertebral body Download PDFInfo
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- CN109758273A CN109758273A CN201910149414.3A CN201910149414A CN109758273A CN 109758273 A CN109758273 A CN 109758273A CN 201910149414 A CN201910149414 A CN 201910149414A CN 109758273 A CN109758273 A CN 109758273A
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- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical group [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims abstract description 6
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- Prostheses (AREA)
Abstract
The invention discloses a kind of adjustable autostability lumbosacral segment artificial vertebral body, upper centrum component is made of bottom plate, side plate and outside cylinder shell；Hypocentrum component is made of trapezoidal base station, antiskid plate and interior cylindrical shell, is equipped with serration with soleplate contact surface on rumpbone；Antiskid plate is located at trapezoidal base station front lower place, and the plane for being equipped with serration with base station is equipped with angle gradient, closely attaches with anterior sacral surface, prevents prosthese from moving back and cause spinal compression；Upper centrum component and hypocentrum component are mutually inserted by outer cylindrical housing and inner cylindrical housing to be connected, the limiting device only mutually rotated of inside setting up defences.There is hydroxyapatite coating layer at entire prosthese and bone face contact, can be merged inside cylindrical shell with bone grafting.The present invention can substitute L5 caused by the diseases such as tuberculosis, tumour and adjacent discs are destroyed, and the physiological camber and stability at reconstruction operations position, not only easy to operate but also its height are easy to adjust with angle.
Description
Technical field
The present invention relates to the medical prosthesis manufacturing technologies in field of medical technology, specifically a kind of adjustable from steady
Qualitative lumbosacral segment artificial vertebral body.
Background technique
Lumbosacral segment is the important component of human spine, is maintaining pelvis form, carrying upper body weight, buffering backbone pressure
Power etc. plays important physiological action.The region is both bent before lumbar vertebrae to migrate segment and movement model with bent after sacral
Enclose the sacral junction of biggish lumbar vertebrae Yu basic without motion function.Unique anatomic form and biomechanical environment cause
The position is the high-incidence region of the diseases such as disc herniation, centrum olisthe, scoliosis, infection.Above-mentioned disease usually causes vertebra
Disk or vertebral bodies destroyed cause lumbosacral segment backbone physiological bending and stability impaired.The destruction of backbone physiological bending and stability
The force unbalance that will lead to each institutional framework in part to a certain extent makes the transmitting disequilibrium in lumbosacral segment in power, causes
The adverse reactions such as muscular strain, pain, inability, long can lead to the complication such as spinal compression, deformity of spine, lower limb paralysis, sternly
The quality of life of patient is reduced again.It rebuilds lumbosacral segment backbone physiological bending and stability is the key that treat the site disorders.
Because of the particularity of lumbosacral segment topography, unified art formula is still lacked for above-mentioned illness.Traditional preceding road
Operative edge is that focal cleaning can be carried out under direct-view, and its disadvantage are as follows: 1. main artery, vein and important organ nearby,
Operative approach risk is big；2. lacking this suitable position internal fixation method, stablizing fixation after lesion can be removed and reducing blood
Pipe complication.Although and simple posterior approach is in treating lumbosacral segment, rear pillar lesion when obtain relatively satisfactory curative effect, the art formula
The thorough cleaning of responsibility lesions is often difficult to realize for lesion in front of front pillar and lumbosacral segment and easily causes peripheral vessels, mind
Through complication such as damages.In order to solve above-mentioned problem, many scholars are cleared up using preceding road lesion and bone grafting merges joint way of escape vertebra
The above-mentioned disease of nut nail-stick system fixation for treatment, although the operation have lesion cleaning completely, spinal nerve decompression sufficiently etc. it is excellent
Gesture, but the drawbacks such as that there is also operating times is long, wound is big.
Currently, fixation mainly has lumbosacral spine anatomical form titanium plate, iliac bone graft steel in anterior approach within the scope of can look into
Plate is fixed, stick is singly followed closely in iliac bone graft side or double nail single rod systems are fixed, boat nail stick fixation etc. after bone grafting joint.Permitted to build medium answer
It is fixed with the preceding road self-locked plate of lumbosacral spine, it is believed that the fixing means can reduce Fusion levels, provide and be reliably fixed.However such side
Method fixing intensity is limited, and the controllable flexibility of fixture is insufficient (pressurizeing between such as screw orientation, steel plate length and centrum), and
It is difficult to use in the serious patient of L5 vertebral bodies destroyed.Although Yang Yin etc. is merged double in front of joint side by the road a Qi Ceqian titanium cage bone grafting
Nail-stick system fixes the successful treatment patient of 30 lumbosacral segment tuberculosis and achieves preferable clinical efficacy, but there is also titanium cages
The complication such as sinking.Consult domestic and international pertinent literature also find no close be suitable for that L5 centrum and adjacent discs destroy from steady
Property artificial vertebral body report, the present invention still belongs to the first in lumbosacral segment prosthetic designs in summary.
Summary of the invention
The present invention is a kind of adjustable autostability lumbosacral segment artificial vertebral body, it overcomes lacking for existing artificial vertebral body
Point fully considers operative approach and clinical manipulation, it, which passes through, is arranged mutually matched upper hypocentrum, to the screw hole on artificial vertebral body
It is improved with screw fit mode, the modes of operation such as angle corresponding with skeleton is set on centrum to realize, made
Not only height, angle are easy to adjust novel centrum, and can preferably realize operative site physiological camber and stability
It rebuilds.
The present invention realizes that above-mentioned purpose uses following technical scheme:
A kind of adjustable autostability lumbosacral segment artificial vertebral body, it includes upper centrum component and hypocentrum component.
The upper centrum component includes bottom plate, side plate, outside cylinder shell, and the outside cylinder shell is connected to bottom plate lower part,
Bottom panel side is equipped with side plate；The hypocentrum component includes trapezoidal base station, antiskid plate, interior cylindrical shell, the interior cylindrical shell
It is connected to the top of trapezoidal base station, the bottom sides of trapezoidal base station are equipped with antiskid plate；The upper centrum component and hypocentrum portion
Part is attached by way of outside cylinder shell and the interior mutual grafting of cylinder shell phase；On the upper centrum component and hypocentrum component
It is respectively equipped with the screw for being connected to skeleton.
Screw hole, screw hole are respectively equipped on the trapezoidal base station of the bottom plate of the upper centrum component, side plate and hypocentrum component
Screw described in interior installation；The screw hole designs for counter sink, and the diameter of screw hole is slightly larger than the diameter in body of screw portion.
Upward dome is equipped at the top of the bottom plate, it is prominent that bottom plate top is additionally provided with equally distributed tooth；Described
Prominent tooth is in triangular pyramid or coniform, and the prominent height of tooth is 1mm.
The ground of the trapezoidal base station is inclined surface, and the inclined surface is equipped with serration；Trapezoidal base station bottom
Inclined surface equipped with serration corresponds to soleplate on rumpbone.
The outer cylindrical housing is identical with the height of inner cylindrical housing, on the side wall of outer cylindrical housing and inner cylindrical housing
It is equipped with diamond shape hollow hole.
The inner cylindrical housing is equipped with longitudinal gap slot, and the inner wall of outer cylindrical housing is equipped with stringer bolt, described
Stringer bolt snap into the gap slot on inner cylindrical housing, by the external cylindrical shell of the cooperation of stringer bolt and gap slot and interior
The relative rotation of cylindrical shell in the axial direction is limited.
The inclined screw hole being parallel to each other there are two being set on the bottom plate of the upper centrum；The side plate is integrally in triangle
Shape, side plate and bottom plate are in 80 degree or so of angle, are equipped with screw hole parallel to the base plate at the center of side plate；Peace in the screw hole
Equipped with screw；Before the trapezoidal base station and side is respectively equipped with screw hole, is equipped with screw in screw hole.
The antiskid plate is located at the front lower place of trapezoidal base station, and the angle of the inclined surface on antiskid plate and trapezoidal base station is in 135 °
It is ± 5 °, identical as lumbosacral angle.
The side of the outer cylindrical housing is set there are two mutual corresponding holding holes.
The outer cylindrical housing is equipped with the rounding of arc with the position that bottom plate, inner cylindrical housing are connected with trapezoidal base station
Angle reinforcing portion.
The upper centrum component and hypocentrum component use medical titanium alloy material or polyether-ether-ketone material.
The upper centrum component, hypocentrum component and surrounding sclerotin contact surface have hydroxyapatite coating layer, with blood vessel
The close position of equal soft tissues carries out smooth treatment.
The present invention has the advantages that by adopting the above technical scheme
The autostability lumbosacral segment artificial vertebral body of height of the present invention, adjustable angle, has fully considered human body waist sacrum
The anatomical features of section backbone, bottom plate and the side plate and soleplate under L4 centrum and centrum side of upper centrum component are combined closely, lower vertebra
The trapezoidal base station of body component is combined closely with soleplate on S1 centrum and front respectively with antiskid plate, to effectively reduce contact surface
Stress concentrate, meet the weight-bearing function of normal waist lumbosacral segment backbone.
The outside cylinder shell of upper centrum component of the present invention and the interior cylindrical shell height of hypocentrum component are consistent, are equipped with
Altitudinal gradient, it is preoperative according to CT surface sweeping data, it measures L5 centrum and adjacent discs height selects suitably sized inside and outside circle
Column shell is assembled, to meet the demand of different patients.
The plane and antiskid plate that the trapezoidal base station of the present invention is contacted with soleplate on rumpbone are all provided with angled gradient, preoperative basis
Patient's lumbosacral segment CT and three-dimensional reconstruction measure the angle of soleplate and horizontal plane on lumbosacral angle and rumpbone, select proper angle
Trapezoidal base station and antiskid plate can satisfy the demand of different patients.
Screw hole of the present invention is all set in prosthese side, front, fully considers lumbosacral segment spinal operation side anterior lateral cervical approach operation behaviour
Make process, is easier operation.
Dome in the present invention on centrum base plate matches with lumbar vertebrae soleplate center place's recess to the rear, dome top with
Periphery is equipped with dentation, keeps bottom plate even closer in conjunction with soleplate, secured.Side plate is fitted closely with L4 centrum side, effectively
Avoid stress concentration.Bottom plate and outside cylinder shell junction and trapezoidal base station and interior cylindrical shell junction are equipped with rounded corner
Reinforcing portion avoids the generation of adverse events such as fractureing.
Cylindrical shell side of the present invention is equipped with diamond shape hollow hole, attachment and remaining sclerotin conducive to surrounding tissue
It grows into, hollow structure can accommodate more implantation bone, to be more conducive to merge with surrounding tissue, ensure that postoperative long-term
Stability.In addition, outside cylinder shell-side face is set there are two holding holes, it is conducive to patient and clamps prosthese, be convenient for surgical procedure.
Screw hole of the present invention is countersunk screw holes, convenient for the embedment of tail portion after screw placement, is avoided to surrounding tissue
Friction.In addition, screwhole diameter is slightly larger than body of screw portion diameter, adjustment angle certain when screw placement is given, is conducive to nail
Implantation.
There is hydroxyapatite coating layer at prosthese and bone face contact, is more favorable for merging with surrounding tissue, ensure that steady
It is qualitative.
Detailed description of the invention
Fig. 1 is main view of the invention
Fig. 2 is rearview of the invention
Fig. 3 is side view of the invention
Fig. 4 is top view of the invention
Fig. 5 is bottom view of the invention
Fig. 6 is coronal-plane cross-sectional view of the invention
Fig. 7 is explosive view of the invention
Fig. 8 is the isometric views of upper centrum component
Fig. 9 is the isometric views of hypocentrum component
Figure 10 is trapezoidal base station angle [alpha] and interior cylindrical shell height H2 parameter schematic diagram
Figure 11 is antiskid plate angle beta and interior cylindrical shell height H2 parameter schematic diagram
Figure 12 is side plate and bottom plate angle γ and outside cylinder shell height H1 parameter schematic diagram
Figure 13 is the schematic diagram after novel Using prosthesis backbone
1 is bottom plate in figure, and 2 be side plate, and 3 be outside cylinder shell, and 4 trapezoidal base stations, 5 be antiskid plate, and 6 be interior cylindrical shell, and 7 be water chestnut
Shape hollow hole, 8 be rounded corner reinforcing portion, and 9 be stringer bolt, and 10 be gap slot, and 11 be holding holes, and 12 be screw hole, and 13 be zigzag
Protrusion, 14 be dome, and 15 is prominent for tooth, and 16 be screw.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to Fig. 1-Fig. 7, artificial vertebral body of the present invention includes upper centrum component, hypocentrum component and screw.It is described
Upper centrum component is made of bottom plate 1, side plate 2 and outside cylinder shell 3；Hypocentrum component is by trapezoidal base station 4, antiskid plate 5 and interior cylinder
Shell 6, the plane and antiskid plate 5 that trapezoidal base station 4 is contacted with soleplate on rumpbone are all provided with angled gradient (α, β), to realize
Angle adjustment.
Referring to Fig. 8-Figure 12, the outside cylinder shell 3 and 4 height of interior cylindrical shell are consistent (H1=H2), are equipped with height ladder
It spends (altitude range: 40mm-60mm, gradient: 2mm), side is equipped with diamond shape hollow hole 7.Outside cylinder shell 3 and 1 junction of bottom plate
And interior cylindrical shell 6 is equipped with rounded corner reinforcing portion 8 with trapezoidal 4 junction of base station, keeps prosthese stronger.3 side of outside cylinder shell
It is assembled equipped with 10 phase of gap slot on stringer bolt 9, with interior cylindrical shell 6, to prevent prosthese axial-rotation.To be planted convenient for prosthese
Enter, outside cylinder shell-side face is set there are two holding holes 11.4 front of trapezoidal base station is equipped with screw hole 12 with side, on rumpbone
The plane of soleplate contact is equipped with serration 13, prevents prosthese from moving forward, and the plane is equipped with angle gradient α, makes itself and sacrum
Soleplate is substantially parallel on bone.
The screw hole 12 is counter sink design, and diameter is slightly larger than 16 body portion diameter of screw, one when giving screw placement
Fixed adjustment angle, conducive to the implantation of nail.The antiskid plate 5 is located at the front lower place of trapezoidal base station 4, with serrated face on base station
Angle β be in 135 ° ± 5 °, it is identical as lumbosacral angle.To adapt to different lumbosacral angles, it is provided with 1 ° of angle gradient.The bottom
Plate 1 is equipped with dome 14, tooth prominent 15 and two parallel screw holes 12, and endplate concavity matches under dome 14 and L4 centrum, reduces
Local stress, avoids the prosthese from sinking.The tooth prominent 15 is in triangular pyramid or cone, is contacted on bottom plate 1 with soleplate under L4
Plane, height 1mm increases the fixing intensity of prosthese and neighbouring terminal plate of vertebral body.The side plate 2 is whole triangular in shape,
It is in about 80 degree of angle γ with floor, center is equipped with countersunk screw holes 12 parallel to the base plate.
The upper and lower centrum component and screw take integrated molding.The centrum component uses medical titanium alloy material
Matter or polyether-ether-ketone material.The upper and lower centrum component and surrounding sclerotin contact surface have hydroxyapatite coating layer, with blood
The close position of the soft tissues such as pipe carries out smooth treatment.
Embodiment
Referring to Fig. 1-Figure 12, a kind of height, adjustable angle autostability lumbosacral segment artificial vertebral body include upper centrum component,
Hypocentrum component and screw.The upper centrum component is made of bottom plate, side plate and outside cylinder shell；Hypocentrum component is by trapezoidal base
Platform, antiskid plate and interior cylindrical shell, the plane and antiskid plate that trapezoidal base station is contacted with soleplate on rumpbone are all provided with angled gradient, from
And realize angle adjustment.The outside cylinder shell is consistent with interior cylindrical shell height, is equipped with altitudinal gradient, to make prosthese height
Degree is conveniently adjusted.Outside cylinder shell and back plate connections and interior cylindrical shell and trapezoidal base station junction are equipped with rounded corner reinforcing
Portion keeps prosthese stronger.The gap slot that outside cylinder shell-side face is equipped on stringer bolt, with interior cylindrical shell mutually assembles, to prevent
Prosthese axial-rotation.For convenient for Using prosthesis, outside cylinder shell-side face sets that there are two holding holes.Before the trapezoidal base station with side
Equipped with screw hole, the plane contacted with soleplate on rumpbone is equipped with serration, prevents prosthese from moving forward, and the plane is equipped with angle
Gradient is spent, is substantially parallel it with soleplate on rumpbone.All components of prosthese are all made of medical titanium alloy material or polyether-ether-ketone material
Matter.Novel prosthese and bone face contact part such as substrate, side plate inner face, centrum side etc. are equipped with the hydroxyl phosphorus of 20um or so
Lime stone coating.
Referring to Figure 13, adjustable autostability lumbosacral segment artificial vertebral body assembly relation of the invention is as follows: preoperative according to trouble
Person's lumbosacral segment CT scan and three-dimensional reconstruction, the relevant anatomies parameter such as acquisition lumbosacral angle select suitable types according to size of tumor
Upper and lower centrum component.The gap slot of hypocentrum component is corresponding with the stringer bolt of upper centrum component, then interior cylindrical shell is inserted into
In outside cylinder shell, cancellous bone is then inserted from the circumferential notch on the bottom plate of upper centrum component, finally by the prosthese after assembling
It is implanted into lesion, suitable screw is then selected to be fixed.Dome on bottom plate matches with the recess of soleplate under L4 centrum, circle
Cone cell tooth is prominent to keep bottom plate stronger in conjunction with soleplate, and side plate increases the contact area with neighbouring centrum, effectively reduces
Stress is concentrated, to meet the weight-bearing function of lumbosacral segment.Centrum component side is equipped with diamond shape hollow hole, more conducively surrounding tissue
Attachment, growth, ensure that postoperative long-time stability.
Adjustable autostability lumbosacral segment artificial vertebral body of the present invention in a word, including upper centrum component, hypocentrum portion
Part and screw.Upper centrum component is made of bottom plate, side plate and outside cylinder shell.Bottom plate is equipped with that dome, tooth are prominent and two parallel
Screw hole, side plate are equipped with a screw hole, and outside cylinder shell is equipped with altitudinal gradient, and side is equipped with diamond shape hollow hole, stringer bolt
With holding holes.Hypocentrum component is made of trapezoidal base station, antiskid plate and interior cylindrical shell.Trapezoidal base station side and front are respectively arranged one
Soleplate contact surface is equipped with serration on piece screw hole, with rumpbone；Antiskid plate is located at trapezoidal base station front lower place, with base
The plane that platform is equipped with serration is equipped with angle gradient, closely attaches with anterior sacral surface, prevents prosthese from moving back and cause spinal cord
Compressing；Interior cylindrical shell height is identical as cylindrical shell, is equipped with identical altitudinal gradient, and side is equipped with diamond shape hollow hole and notch
Slot, the notch are combined with the stringer bolt on outside cylinder shell, to put combined prosthese axial-rotation.Entire prosthese and bone face
There is hydroxyapatite coating layer in contact position, can be merged inside cylindrical shell with bone grafting.The present invention can substitute the diseases such as tuberculosis, tumour and draw
The L5 and adjacent discs risen is destroyed, the physiological camber and stability at reconstruction operations position, not only easy to operate but also its height
It is easy to adjust with angle.
Claims (10)
1. a kind of adjustable autostability lumbosacral segment artificial vertebral body, it includes that upper centrum component and hypocentrum component, feature exist
In: the upper centrum component includes bottom plate, side plate, outside cylinder shell, and the outside cylinder shell is connected to bottom plate lower part, bottom plate side
Face is equipped with side plate；The hypocentrum component includes trapezoidal base station, antiskid plate, interior cylindrical shell, and the interior cylindrical shell is connected to
The bottom sides on the top of trapezoidal base station, trapezoidal base station are equipped with antiskid plate；The upper centrum component and hypocentrum component pass through
Outside cylinder shell and the mode of the interior mutual grafting of cylinder shell phase are attached；It is set respectively on the upper centrum component and hypocentrum component
There is the screw for being connected to skeleton.
2. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 1, it is characterised in that: the upper vertebra
Screw hole is respectively equipped on the trapezoidal base station of the bottom plate of body component, side plate and hypocentrum component, the installation screw in screw hole；
The screw hole designs for counter sink, and the diameter of screw hole is slightly larger than the diameter in body of screw portion.
3. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 2, it is characterised in that: the bottom
Upward dome is equipped at the top of plate, it is prominent that bottom plate top is additionally provided with equally distributed tooth；The prominent tooth is in triangular pyramid or circle
Cone cell, the prominent height of tooth are 1mm.
4. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 3, it is characterised in that: described trapezoidal
The ground of base station is inclined surface, and the inclined surface is equipped with serration；Trapezoidal base station bottom is equipped with serration
Inclined surface corresponds to soleplate on rumpbone.
5. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 4, it is characterised in that: described is outer
Cylindrical shell is identical with the height of inner cylindrical housing, and diamond shape hollow out is equipped on the side wall of outer cylindrical housing and inner cylindrical housing
Hole.
6. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 5, it is characterised in that: described is interior
Cylindrical shell is equipped with longitudinal gap slot, and the inner wall of outer cylindrical housing is equipped with stringer bolt, and the stringer bolt snaps into interior
In gap slot on cylindrical shell, in the axial direction by the external cylindrical shell of the cooperation of stringer bolt and gap slot and inner cylindrical housing
Relative rotation limited.
7. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 6, it is characterised in that: the upper vertebra
The inclined screw hole being parallel to each other there are two being set on the bottom plate of body；The side plate is integrally triangular in shape, and side plate and bottom plate are in 80
The angle of left and right is spent, is equipped with screw hole parallel to the base plate at the center of side plate；Screw is installed in the screw hole；The ladder
Before shape base station and side is respectively equipped with screw hole, is equipped with screw in screw hole.
8. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 7, it is characterised in that: described anti-skidding
Plate is located at the front lower place of trapezoidal base station, and the angle of the inclined surface on antiskid plate and trapezoidal base station is in 135 ° ± 5 °, with lumbosacral angle phase
Together.
9. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 8, it is characterised in that: described is outer
The side of cylindrical shell is set there are two mutual corresponding holding holes；The outer cylindrical housing and bottom plate, inner cylindrical housing and ladder
The position that shape base station is connected is equipped with the rounded corner reinforcing portion of arc.
10. a kind of adjustable autostability lumbosacral segment artificial vertebral body according to claim 9, it is characterised in that: described
Upper centrum component and hypocentrum component use medical titanium alloy material or polyether-ether-ketone material.The upper centrum component, lower vertebra
Body component and surrounding sclerotin contact surface have hydroxyapatite coating layer, carry out with close positions of soft tissues such as blood vessels smooth
Processing.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112057210A (en) * | 2020-08-11 | 2020-12-11 | 上海三友医疗器械股份有限公司 | Expandable artificial vertebral body and mounting tool thereof |
Citations (12)
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