CN105997309A - Bionic anti-dislocation goat lumbar vertebra junction complex - Google Patents
Bionic anti-dislocation goat lumbar vertebra junction complex Download PDFInfo
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- CN105997309A CN105997309A CN201610285489.0A CN201610285489A CN105997309A CN 105997309 A CN105997309 A CN 105997309A CN 201610285489 A CN201610285489 A CN 201610285489A CN 105997309 A CN105997309 A CN 105997309A
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- lumbar vertebra
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2002/4445—Means for culturing intervertebral disc tissue
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a bionic anti-dislocation goat lumbar vertebra junction complex, which comprises a lumbar vertebra body part and an intervertebral disk part. The lumbar vertebra body part comprises a K-shaped geometric body that has a shape similar to a goat lumbar vertebra; the inside of the geometric body is hollow; a round groove and a rectangular through groove are provided at the side surface of the geometric body; an annular channel is provided at the up and the down transverse plane respectively; and the inner walls of the channels have a large hemisphere structure. The intervertebral disk part comprises a base plate, a curved side plate and a cylindrical protrusion; a screw is provided in the curved side plate and a nearly hemispherical shell structure with two curved protrusions is provided at the end of the cylindrical protrusion. The nearly hemispherical shell structure cooperates with the large hemisphere structure to form a ball socket joint; the joint surface is polished; a hydroxy apatite coating is provided in the complex where contacts the bone surface. According to the invention, both lumbar vertebra removed in the operation and contiguous intervertebral disk can be substituted; intervertebral disk functions like rotation, flexion and extension are reserved; an anti-dislocation apparatus is provided in the ball socket joint structure, thereby guaranteeing postoperative stability and reserving lumbar vertebra activity. In this way, the complex is similar to goat physiological state.
Description
Technical field
The invention belongs to medical prosthesis manufacturing technology field, after particularly relating to goat lumbar vertebra and adjacent discs excision
Carry out prosthese transplanting, it is possible to retain the bionical anti-dislocation goat lumbar vertebra junctional complex of lumbar vertebra movable function.
Background technology
Goat belongs to Mammalia, typically has 6～7 lumbar vertebras, and compared with human body lumbar vertebra, its vertebral body is longer, but crown
Footpath is the least with sagittal diameter, and " K " character form structure is seen in class in side, is connected also through intervertebral disc, thus protects between each vertebral body
Demonstrate,prove the rotation of vertebral body, the motor function such as bent and stretched.Although goat equally cannot walk upright with the mankind, but scholar is had to grind
Study carefully and find that therefore the most many spinal columns are false because the force-bearing situation acting on its lumbar vertebra of paravertebral muscles is similar to human body lumbar vertebra
The developmental research of body mostly carried out safety evaluation by goat experiment in vivo and vitro before stepping into clinic.
Tuberculosis of spine, tumor, old fracture often result in the severe complication such as scoliosis, spinal compression, are serious prestige
One class disease of side of body health.At present, focal cleaning postoperative row titanium cage bone-graft fusion connection is usually taken for above-mentioned illness
Dowel rod internal fixation treatment, because this art formula is obtained in that at once and long-time stability, widely used by spinal surgeons.
But three neighbouring vertebral bodys are the most at least merged in this operation, are fused vertebral body and lose normal movable function, cause not melting
Close sections stress to concentrate and range of activity increase, may result in adjacent discs regression, Secondary cases spinal canal stenosis, joint for a long time
The severe complications such as prominent articular degeneration, acquired spondylolysis, shakiness.Additionally, there is scholar's long term follow-up to find to carry out titanium
The patient of cage bone-graft fusion there may be the complication such as titanium cage sedimentation, and the person of being in a bad way needs operative treatment again.On overcoming
The research stating defect, artificial vertebral body and artificial intervertebral disk receives much concern always, at present achieved with remarkable progress, but
Still suffer from being difficult to preservation spinal physiological function or causing the complication such as unstable spine.
For solving an above-mentioned difficult problem, the professor such as domestic he Xijing, Lei Wei puts forth effort on grinding of artificial vertebral body and intervertebral disc system first
Study carefully, at present achieved with gratifying achievement, bionical atlas and axis prosthese and the artificial vertebral body of Cervical vertebra and intervertebral in terms of cervical vertebra
Dish complex achieves satisfied effect in goat in vivo and in vitro.But because of lumbar vertebra anatomical structure and physiological function
Complexity, artificial vertebral body and the intervertebral disc complex of cervical vertebra are dfficult to apply to lumbar vertebra.Lumbar vertebra complex must meet following three points:
1. ensure implant posterior spinal at once and long-time stability.2. retain the motor function of neighbouring vertebral body.3. meet natural spine
Weight-bearing function.But artificial prosthesis, artificial intervertebral disk and the artificial vertebral body of Cervical vertebra and intervertebral disc system are all difficult to do at present
Arrive.For solving this difficult problem, applicant designs artificial lumbar vertebra and intervertebral disc junctional complex, for assessing its safety,
Need row goat in vivo and in vitro, but because goat lumbar vertebra dissects the difference with human body, this junctional complex cannot be used directly for mountain
Sheep, therefore designs a kind of bionical anticreep goat lumbar vertebra complex according to goat lumbar vertebra anatomical features, consults domestic and foreign literature,
This design still belongs to the first.
Summary of the invention
It is an object of the invention to fully draw the advantage of current artificial intervertebral disk and artificial vertebral body, learn from other's strong points to offset one's weaknesses and comprehensive mountain
The anatomical features of Ren Caprae seu Ovis vertebra provides a kind of bionical anti-dislocation goat lumbar vertebra junctional complex.
For reaching above-mentioned purpose, present invention employs techniques below scheme:
This goat lumbar vertebra junctional complex includes vertebral body parts and is arranged at the disc components at vertebral body parts two ends, described
Vertebral body parts include K font solid, described disc components include respectively with soleplate and the side shape of lumbar vertebra
The corresponding base plate of shape and arc side plate, described arc side plate is arranged on described base plate, the base plate of described disc components
And it is connected by ball-and-socket joint between the respective side end face of K font solid.
The line segment that the edge of described base plate is connected by oval segmental arc and the two ends with this ellipse segmental arc forms, described elliptic arc
Section round and smooth process with the junction of line segment, described oval segmental arc is arranged with corresponding oval long axial symmetry, described arc side plate
In the oval segmental arc of described bottom edge, described arc side plate slopes inwardly and is 60～70 degree of angles with described base plate,
It is provided with screw on described arc side plate.
Said two screw is not in same level.
Being provided with coniform tooth on described base plate to dash forward and cylindrical protrusion, coniform tooth is prominent to be positioned at described with described arc side plate
The surface, the same side of base plate, coniform tooth nosing ellipse is spaced apart on described base plate, and cylindrical protrusion is positioned at described
On the opposite side surface of base plate, the centrage of cylindrical protrusion and described base plate plane center superposition.
The side of described K font solid includes the rectangle plane extended along coronalplane and is connected with described rectangle plane
Saddle curved surface, be provided with cavity in described K font solid, if being provided with on the side of described K font solid
Dry circular groove and the rectangle through slot connected with described cavity, two end faces of described K font solid are provided with
Opening is circular groove, is provided with for the spheroid as ball-and-socket joint ball and socket joint, described spheroid and institute in described groove
State and between groove, leave gap.
Described circular groove is randomly distributed on the side of described K font solid, and described rectangle through slot is respectively along sagittal plane
And coronalplane direction traveling being distributed in symmetrically on described K font solid about by-level face, described spheroid is high
Go out described K font solid respective side end face, be provided with in described gap coordinate with described spheroid for as ball-and-socket
The glenoid spherical shell in joint, described spherical shell is connected with the cylindrical protrusion being arranged on described base plate.
Being provided with two arc-shaped protrusions at the edge of opening of described spherical shell, said two arc-shaped protrusions position is relative, and closes
Symmetrical in median sagittal plane, the wall of described groove is provided with two breach, two gap positions relatively and about
Coronalplane is symmetrical, the outside wall surface of two arc-shaped protrusions be smaller than or equal between said two breach away from
From, and this spacing is more than the diameter at described slot opening.
Described vertebral body parts and disc components all use one-body molded.
Described goat lumbar vertebra junctional complex uses medical titanium alloy material, the side of described vertebral body parts and disc components
The upper surface directly contacted with surface of bone is provided with hydroxyapatite coating layer.
The articular surface of described ball-and-socket joint uses polishing.
Beneficial effects of the present invention is embodied in:
Bionical anti-dislocation goat lumbar vertebra junctional complex of the present invention has taken into full account the anatomical features of goat lumbar vertebra, vertebral body
Parts use K font solid, and base plate and arc side plate on disc components are combined closely, effectively with neighbouring vertebral body
The stress reducing contact surface is concentrated, and meets the weight-bearing function of normal lumbar vertebra, because of the existence of ball-and-socket joint, remains intervertebral
The rotation of dish, bend and stretch function, be more nearly physiological status.The present invention can be used for artificial lumbar vertebra and intervertebral disc junctional complex
Safety evaluation.
The further technique effect that the present invention obtains is as follows:
1, activity centre is not only made to be located exactly at intervertebral space central authorities by the ball-and-socket joint of Ti alloy casting, it is to avoid because of activity
The potential complication that middle ectopia cordis may cause, and remain the rotation of vertebral body, lateral bending, anteflexion, dorsiflexion function, more
Add close to physiological status.The present invention can substitute the vertebral body taken down in goat lumbar surgery and neighbouring intervertebral disc, and ball
Nest articulation structure is provided with anti-drop device, both ensure that postoperative stability, has remained again the activeness of lumbar vertebra, at bionics
On closer to goat physiological status.
2, the shape of the base plate of disc components of the present invention is similar with goat lumbar vertebra soleplate front shape, and base plate sets
There is coniform tooth to dash forward, make base plate be combined with soleplate more closely, firmly.Arc side plate fits tightly with vertebral body side, increases
Big contact area, effectively avoids stress and concentrates, and the cylindrical protrusion on base plate can be born well because bending and stretching fortune
The cross shear that movable property is raw, it is to avoid the generation of adverse events such as deform, fracture.
3, vertebral body parts side of the present invention is provided with attachment and the remaining of the small cylindrical tank of random distribution, beneficially surrounding tissue
Growing into of sclerotin, utilizes the cavity within K font solid and rectangle through slot can accommodate more implantation bone, from
And it is more conducive to the fusion with surrounding tissue, it is ensured that postoperative long-term stability.
4, two sides, the most polished process of spherome surface and groove outer wall face inside and outside spherical shell of the present invention, effectively reduces
The friction of articular surface, disc components all has a hydroxyapatite coating layer with the side of surface of bone contact position and vertebral body parts,
It is more favorable for the fusion with surrounding tissue, it is ensured that activeness and stability.
5, arc side plate of the present invention is provided with two not screws in same level, by the spiral shell of different directions
Nail is implanted, and is firmly fixed to close on vertebral body by arc side plate, reduces the risk loosening abjection.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention；
Fig. 2 is the rearview of the present invention；
Fig. 3 is the side view of the present invention；
Fig. 4 is the upward view of the present invention；
Fig. 5 is the sagittal plane sectional view of the present invention；
Fig. 6 is the front view of vertebral body parts；
Fig. 7 is the sagittal plane sectional view of vertebral body parts；
Fig. 8 is the isometric views of vertebral body parts；
Fig. 9 is the upward view of vertebral body parts；
Figure 10 is the rearview of disc components；
Figure 11, Figure 12 are vertebral body parts each parameter schematic diagrams；
Figure 13, Figure 14 are disc components each parameter schematic diagram；
In figure: 1 is K font solid, and 2 is base plate, and 3 is arc side plate, and 4 is ball-and-socket joint, 6 is oval segmental arc,
7 is line segment, and 8 is round and smooth process, and 9 is screw, and 10 is that coniform tooth is dashed forward, and 11 is cylindrical protrusion, and 12 is cavity,
13 is circular groove, and 14 is rectangle through slot, and 15 is end face, and 16 is annular groove, and 17 is more than half sphere structure, and 18 are
Breach, 19 is spherical shell, and 20 is arc-shaped protrusions, and 21 is the annular groove opening at K font solid end face, and 22 are
Screw.
Detailed description of the invention
With embodiment, the present invention is elaborated below in conjunction with the accompanying drawings.
Seeing Fig. 1～Figure 10, bionical anti-dislocation goat lumbar vertebra junctional complex of the present invention, including vertebral body parts, vertebra
Between disk component and screw 22.
Vertebral body parts are made up of the K font solid 1 of class goat lumbar vertebra form, and K font solid 1 is internally formed sky
Chamber 12, side is provided with the small cylindrical tank 13 of random distribution, along the relative rectangle through slot 14 of two openings of sagittal plane traveling
And along the relative rectangle through slot 14 of two openings of coronalplane traveling, rectangle through slot 14 is along K font solid 1
By-level face is symmetric, and K font solid about 1 both ends of the surface 15 are provided with annular groove 16, annular groove 16
Inwall is more than half sphere structure 17, and described more than half sphere structure 17 top is above K font solid end face 15, institute
Two it are provided with about the symmetrical breach 18 of coronalplane before and after stating on annular groove 16 outer wall.
Disc components includes the corresponding base plate of soleplate shape 2 with lumbar vertebra and the side view with lumbar vertebra
Corresponding arc side plate 3, the edge 5 of described base plate 2 by oval segmental arc 6 (radian is 180 degree) and with this ellipse
The line segment 7 that the two ends of segmental arc connect forms, and carries out round and smooth process at end points, and oval segmental arc 6 is with corresponding oval major axis pair
Claiming, arc side plate 3 is arranged in the oval segmental arc at base plate 2 edge, and the development length of arc side plate 3 is less than or equal to four points
One of ellipse, described base plate 2 is provided with coniform tooth and dashes forward 10 and cylindrical protrusion 11, coniform tooth dashes forward 10 and arc
Shape side plate 3 is positioned at the surface, the same side of base plate 2, and coniform tooth is dashed forward and 10 is distributed on base plate 2 along ellipse uniform intervals,
Cylindrical protrusion 11 is positioned at base plate 2 and deviates from a side surface of neighbouring lumbar vertebra soleplate, in its centrage and base plate 2 plane
The heart overlaps, and described cylindrical protrusion 11 end connects nearly hemispherical Shell 19, connects at described nearly hemispherical Shell 19 rim openings
Two arc-shaped protrusions 20, two arc-shaped protrusions 20 positions are relative and symmetrical about median sagittal plane, and two arcs
Being smaller than or equal to the distance between said two breach 18, more than described annular groove of shape projection 20 outside wall surface
Overall diameter at the opening part of K font solid end face.Ring can be put into by 18 liang of arc-shaped protrusions 20 of two breach
In connected in star 16, by rotating after entrance, by arc-shaped protrusions 20 away from breach 18, thus prevent spherical shell 19 from annular
Groove 16 is deviate from, not only forms ball-and-socket joint 4, and ensure that the stability of this ball-and-socket joint 4.Described arc
Side plate 3 is provided with two not screws 9 in same level, is firmly fixed by arc side plate 3 by screw 22
In closing on vertebral body.In this junctional complex, spherical shell 19 structure matches with more than half sphere structure 17 and constitutes ball-and-socket joint 4,
Ball-and-socket joint 4 ensure that the postoperative rotation of vertebral body, lateral bending, anteflexion, the dorsiflexion function of closing on, described screw 22 position respectively
In screw 9.
It can be seen that annular groove 16 is exactly for laying the gap of spherical shell 19, annular groove from Fig. 5 and Fig. 7
Opening overall diameter at K font solid end face is less than the spacing of described arc-shaped protrusions 20 outside wall surface.
Vertebral body parts, disc components all use medical titanium alloy material one-body molded, and contact surface direct with surface of bone is all provided with
It is equipped with hydroxyapatite coating layer, is more conducive to the fusion with surrounding tissue, it is ensured that postoperative stability.Described spherical shell 19
Surfaces externally and internally, the inside and outside wall of annular groove 16 are all processed by shot blasting, can effectively reduce contact surface (articular surface)
Friction.
See Fig. 6～Fig. 9, the K font solid 1 height 40 ± 3mm of vertebral body parts, by-level face Median sagittal diameter
Being 10 ± 1mm, crown footpath, back is 14 ± 2mm, before at the end points that is connected with line segment below of circular arc through smoothed curve
Being attached, junction carries out the round and smooth process of fillet of radius R1=1mm.The level of distance by-level face 10mm
Face Median sagittal diameter is 13 ± 1mm, and crown footpath, back is 18 ± 2mm, before at the end points that is connected with line segment below of circular arc
Being attached by smoothed curve, junction carries out the round and smooth process of fillet of radius R2=2mm.Distance by-level face
The horizontal plane Median sagittal diameter of 15～20mm is 15 ± 1mm, and crown footpath, back is 22 ± 2mm, before circular arc and rear wires
Being attached by smoothed curve at the end points that section connects, junction carries out the round and smooth process of fillet of radius R3=3mm,
Sideline, above-mentioned each horizontal plane rear portion is positioned on same coronalplane.In distance K font solid 1 by-level face 2～3mm
Both sides up and down inside carry out hollowing out process, make the side thickness 2～3mm, four, side rectangle through slot 14 opening be
4mm × 6mm, the small cylindrical tank 13 of side random distribution is 1mm deeply, and radius is 1mm.
See Figure 11, Figure 12, described more than half sphere structure 17 diameter D2=10mm, more than half sphere structure 17 top with
The distance of K font solid end face 15 is H1=2mm, described annular groove 16 width W2=1.5mm, annular groove
In the opening 21 overall diameter D3=11mm of K font solid end face, breach 18 spacing on annular groove 16 outer wall
D1=13mm, width W=6.2mm, depth H 2=3mm, breach 18 bottom rang ring connected in star 16 bottom H3=2mm,
Hollow out inside K font solid 1 two ends and at a distance of crown footpath, W1=3～5mm, K font solid end face 15 back be
W3=22 ± 2mm.
See the thick H6=1.5mm of Figure 13, Figure 14, described disc components base plate 2 and arc side plate 3, base plate 2 limit
Edge ellipse segmental arc 6 minor axis radius is 13mm, and major axis radius is 15mm, and the junction of oval segmental arc 6 and line segment 7 is entered
The row radius round and smooth process of R4=2mm fillet, the described high 12mm of arc side plate 3, with base plate 2 in 60～70 degree of angles,
Described cylindrical protrusion 11 radius is 4mm, high H4=1mm, and end is connected with spherical shell 19, spherical shell 19 thickness
W5=1.3mm, spherical shell 19 distance from top edge of opening height H5=2mm, the spacing of described arc-shaped protrusions 20 outside wall surface
W4=12.8mm, arc-shaped protrusions width W6=6mm.
Described hydroxyapatite coating layer thickness is 20 μm.
Above-mentioned parameter suitably can change according to the difference of goat lumbar vertebra size.
Bionical anti-dislocation goat lumbar vertebra junctional complex assembly relation of the present invention is as follows: cylindric on described base plate 2
The spherical shell 19 of projection 11 end and arc-shaped protrusions 20 structure and the more than half sphere structure 17 on vertebral body parts and annular groove
16 constitute anticreep ball-and-socket joint, and each contact surface of ball-and-socket joint is highly polished process, it is ensured that joint is in motor process
Less friction and wear, arc side plate 3 is fixed on neighbouring vertebral body by screw 22 respectively by screw 9.Intervertebral disc
Base plate 2 shape of parts is similar with goat lumbar vertebra soleplate, and coniform tooth is dashed forward and 10 made base plate 2 be combined more with adjacent endplates
Firmly, arc side plate 3 adds and the contact area of neighbouring vertebral body, effectively reduces stress and concentrates, thus meets waist
The weight-bearing function of vertebra.Vertebral body components interior carries out hollowing out process, can accommodate more bone grafting, and it is through that side is provided with rectangle
The small cylindrical tank 13 of groove 14 and random distribution, the more conducively attachment of surrounding tissue, growth, it is ensured that postoperative is steady in a long-term
Property.Anticreep ball-and-socket joint not only ensure that the stability of vertebral disc portion after implantation, prevents disc components and vertebral body parts
Separate, and remain interpyramidal rotation, lateral bending, anteflexion, dorsiflexion function, more conform to goat physiological status.
In a word, bionical anti-dislocation goat lumbar vertebra junctional complex of the present invention, including vertebral body parts, disc components
And screw.Vertebral body parts are made up of " K " font solid of class goat lumbar vertebra form, carry out hollowing out process inside solid,
Side is provided with small cylindrical tank and rectangle through slot, and upper and lower both ends of the surface are provided with annular groove, and groove inner wall is more than half sphere structure,
It is provided with two small gaps before and after on outer wall.Disc components is made up of with cylindrical protrusion base plate, arc side plate, on base plate
Being provided with coniform tooth to dash forward, arc side plate is provided with two not screws in same level, and cylindrical protrusion end is band
There is the nearly hemispherical Shell structure of two arc-shaped protrusions.Nearly hemispherical Shell structure on disc components and vertebral body in this junctional complex
More than half sphere structure on parts matches and constitutes anticreep ball-and-socket joint, and articular surface is processed by shot blasting, with bone in complex
There is hydroxyapatite coating layer contact position, face.The present invention not only can substitute the vertebral body taken down in goat lumbar surgery and neighbouring
Intervertebral disc, and remain the rotation of intervertebral disc, bend and stretch function, and total is provided with anti-drop device, both ensure that
Postoperative stability, remains again the activeness of lumbar vertebra, closer to goat physiological status on bionics, and can be as people
With the safety evaluation model of prosthese.
Claims (10)
1. a bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: this goat lumbar vertebra junctional complex includes
Vertebral body parts and be arranged at the disc components at vertebral body parts two ends, described vertebral body parts include K font solid (1),
Described disc components includes base plate (2) corresponding with the soleplate of lumbar vertebra and side view and arc side plate respectively
(3), described arc side plate (3) is arranged on described base plate (2), the base plate (2) of described disc components and K word
It is connected by ball-and-socket joint (4) between the respective side end face of shape solid (1).
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
The line segment (7) that the edge of base plate (2) is connected by oval segmental arc (6) and the two ends with this ellipse segmental arc (6) forms,
Described oval segmental arc (6) and the round and smooth process in junction of line segment (7), described oval segmental arc (6) is with corresponding ellipse
Long axial symmetry, described arc side plate (3) is arranged in the oval segmental arc (6) at described base plate (2) edge, described arc
Shape side plate (3) slopes inwardly and with described base plate (2) in 60～70 degree of angles, and described arc side plate (3) is upper to be arranged
There is screw (9).
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
Screw (9) is two, and two screws (9) are not in same level.
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
Coniform tooth prominent (10) and cylindrical protrusion (11), coniform tooth prominent (10) and described arc it is provided with on base plate (2)
Shape side plate (3) is positioned at the surface, the same side of described base plate (2), coniform tooth prominent (10) along ellipse spaced apart in
On described base plate (2), cylindrical protrusion (11) is positioned on the opposite side surface of described base plate (2), cylindrical protrusion
(11) centrage overlaps with described base plate (2) planar central.
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
The side of K font solid (1) includes the rectangle plane extended along coronalplane and the saddle being connected with described rectangle plane
Shape curved surface, is provided with cavity (12), the side of described K font solid (1) in described K font solid (1)
On be provided with several circular grooves (13) and the rectangle through slot (14) connected with described cavity (12), described K word
Being provided with opening on two end faces of shape solid (1) is circular groove, is provided with for as ball in described groove
The spheroid of nest joint ball and socket joint, leaves gap between described spheroid and described groove.
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
Circular groove (13) is randomly distributed on the side of described K font solid (1), and described rectangle through slot (14) is respectively
Along sagittal plane and the traveling of coronalplane direction and it is distributed in symmetrically on described K font solid (1) about by-level face,
Described spheroid exceeds described K font solid (1) respective side end face, is provided with and coordinates with described spheroid in described gap
For as the glenoid spherical shell of ball-and-socket joint (19), described spherical shell (19) be arranged on described base plate (2)
Cylindrical protrusion (11) is connected.
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
Two arc-shaped protrusions (20), said two arc-shaped protrusions (20) position phase it is provided with at the edge of opening of spherical shell (19)
Right and symmetrical about median sagittal plane, the wall of described groove is provided with two breach (18), two lack
Mouthful (12) position relatively and symmetrical about coronalplane, the outside wall surface of two arc-shaped protrusions (20) be smaller than or
Person is equal to the distance between said two breach (18), and is more than the diameter at described slot opening.
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
Vertebral body parts and disc components all use one-body molded.
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
Goat lumbar vertebra junctional complex uses medical titanium alloy material, with surface of bone on the side of described vertebral body parts and disc components
Directly the surface of contact is provided with hydroxyapatite coating layer.
A kind of bionical anti-dislocation goat lumbar vertebra junctional complex, it is characterised in that: described
The articular surface of ball-and-socket joint uses polishing.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108685627A (en) * | 2018-06-15 | 2018-10-23 | 陕西东望科技有限公司 | A kind of spinal prostheses and preparation method thereof based on 3D printing |
| CN109758273A (en) * | 2019-02-28 | 2019-05-17 | 河南省人民医院 | A kind of adjustable autostability lumbosacral segment artificial vertebral body |
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| GB2612444B (en) * | 2022-07-12 | 2024-04-03 | Hao Dingjun | Two-segment bionic cervical intervertebral disc system for connecting to a vertebral body |
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