CN205683167U - The bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex - Google Patents

Abstract

The utility model discloses a kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, including vertebral body parts, disc components and screw.Vertebral body parts are made up of with the Elliptic Cylinder of deep groove upper and lower surface, disc components includes arc L plate and composite wood backing strap, arc L plate is by base plate, arc side plate is constituted with cylindrical protrusion, cylindrical protrusion end is the nearly hemispherical Shell structure with two arc-shaped protrusions, composite wood backing strap groove deep with Elliptic Cylinder is connected, nearly hemispherical Shell structure matches with the more than half sphere structure in composite wood backing strap and constitutes anticreep ball-and-socket joint, this utility model not only can substitute the vertebral body taken down in lumbar surgery and neighbouring intervertebral disc, and remain the rotation of intervertebral disc, bend and stretch and certain pooling feature, and total is provided with anti-drop device, both ensure that postoperative stability, remain again the activeness of lumbar vertebra, closer to human body physiological state on bionics.

Description

The bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex

Technical field

This utility model belongs to medical prosthesis manufacturing technology field, particularly relates to lumbar vertebra and adjacent discs pathological changes is cut Carrying out prosthese transplanting except postoperative, the artificial lumbar vertebra of bionical anti-dislocation and the intervertebral disc that can retain lumbar vertebra movable function connect compound Body.

Background technology

Lumbar vertebra is positioned at the hypomere of human spine, and vertebral body is relatively big, and upper and lower soleplate is kidney type, and place to the rear of soleplate central authorities is slightly concave to be fallen into, Being connected by front wide and rear narrow intervertebral disc between vertebral body with vertebral body, physiology bends, and is the load-bearing organ wanted of body weight for humans.? In normal human, because of the effect of intervertebral disc, vertebral body has certain rotation, lateral bending, anteflexion, dorsiflexion function, studies have reported that 20-30 year Normal lumbar motion segment (L1/L2 L5/S1) flexion-extension motion degree scope (Overlay method): male is 14.15 °～29.39 °, Women is 14.54 °～26.61 °.

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 associating is usually taken for above-mentioned illness Nail rod internal fixation treatment, operative approach is divided into simple front road, the simple way of escape and anterior-posterior.Because this art formula is obtained in that i.e. Carve and long-time stability, widely used by spinal surgeons.But three neighbouring vertebral bodys are the most at least merged in this operation, are melted Close vertebral body and lose normal movable function, cause non-Fusion levels stress to be concentrated and range of activity increases, may result in neighbour for a long time The severe complications such as nearly intervertebral disc degeneration, Secondary cases spinal canal stenosis, zygapophysial joints regression, acquired spondylolysis, shakiness.This Outward, the patient carrying out titanium cage bone-graft fusion there may be the complication such as titanium cage sedimentation to have scholar's long term follow-up to find, is in a bad way Person needs operative treatment again.

For overcoming titanium cage defect, the improvement of artificial vertebral body receives much concern always, the most by the initial type that struts merely, sends out Exhibition is to strutting fixed pattern, adjustable fixed pattern and self-retaining type, and making material, also by original metal material, develops into present The multiple materials such as pottery, polymer composite are also deposited.Although the development of artificial vertebral body makes post surgery stabilization increased, individually Prosthese even eliminates the fixing of nail-stick system, decreases operation wound, but because above-mentioned prosthese is still fixed as master to merge, it is impossible to Retain the movable function of normal vertebral body, the complication that may cause after fusion the most still cannot be avoided fixing.Although there being scholar to grind Make the artificial vertebral body with certain movable function, but the activity centre of this prosthese is positioned at vertebral body central authorities, away from intervertebral space, and And range of activity is less, it is not inconsistent with the normal physiological condition of spinal column, may result in facet joint abrasion, calcification for a long time and be difficult to The potential complication expected, is not therefore used widely.

For retaining the movable function of vertebral body, lot of domestic and foreign scholar is devoted to the research of artificial intervertebral disk, in the market Multiple artificial intervertebral disk is had to be applied to treating neck, intervertebral disc of lumbar vertebra pathological changes, wherein SB Charit é Disc and Prodisc II Treatment lumbal vertebra in be widely used, in a prospective random control study SB Charit é Disc implant relative to The internal fixations such as bone-graft fusion achieve more preferable effect in terms for the treatment of lumbago and backache.But studies have reported that intervertebral disc is implanted Rear there is prostheses migration, coming off causes closing on blood vessel, neural damage, and implants may make for multistage artificial intervertebral disk Becoming unstable spine, for there is the patient merging Vertebral body, artificial intervertebral disk will be difficult to implant.

For solving an above-mentioned difficult problem, the professor such as domestic he Xijing, Lei Wei puts forth effort on artificial vertebral body and intervertebral disc system first Research, 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 zoopery.But because of lumbar vertebra anatomical structure and the complexity of physiological function, Artificial vertebral body and the intervertebral disc complex of cervical vertebra are dfficult to apply to lumbar vertebra.Artificial lumbar vertebra and intervertebral disc junctional 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. just meeting The often weight-bearing function of spinal column.But artificial prosthesis, artificial intervertebral disk and the artificial vertebral body of Cervical vertebra and intervertebral disc system are equal at present It is difficult to, consults domestic and international pertinent literature and also find no the artificial lumbar vertebra in pass and the report of intervertebral disc junctional complex.

Summary of the invention

The purpose of this utility model is to overcome the shortcoming of tradition integration technology, fully draws current artificial intervertebral disk and people The advantage of work vertebral body, learns from other's strong points to offset one's weaknesses, it is provided that a kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex.

For reaching above-mentioned purpose, this utility model have employed techniques below scheme:

This artificial lumbar vertebra and intervertebral disc junctional complex include vertebral body parts and are arranged at the intervertebral at vertebral body parts two ends Disk component, described disc components include arc L plate and composite wood backing strap, described arc L plate include respectively with lumbar vertebra Soleplate and the corresponding base plate of side view and side plate, described side plate is arranged on described base plate, and described base plate is with compound Being connected by ball-and-socket joint between material cushion, described vertebral body parts include Elliptic Cylinder, and two end faces of Elliptic Cylinder are offered Fluted, the composite wood backing strap of two disc components is respectively embedded in the groove on the corresponding end face of Elliptic Cylinder.

The edge of described base plate is by oval segmental arc and the M font curve that is connected with the two ends rounding off of this ellipse segmental arc Duan Zucheng, described oval segmental arc is with corresponding oval short axial symmetry, and described side plate is arranged at the oval segmental arc of described bottom edge On, described side plate slopes inwardly and is 70～80 degree of angles with described base plate, and described side plate is provided with screw.

Being provided with ellipticity dome on described base plate and coniform tooth is dashed forward, described ellipticity dome and coniform tooth are dashed forward With the surface, the same side that described side plate is positioned at described base plate, the center of ellipticity dome and described base plate center superposition, ellipticity Dome height is successively decreased to surrounding by center, and coniform tooth nosing ellipse is spaced apart on described base plate.

Described screw is two, and two screws are not in same level.

Described composite wood backing strap includes the lower cylindroid being embedded in the groove on the corresponding end face of described Elliptic Cylinder, sets It is placed in the upper cylindroid being connected with described lower cylindroid of this slot opening position and for as ball-and-socket joint ball and socket joint Composite spheroid, it is circular groove that described upper cylindroid is provided with opening, and the groove that this opening is circular extends to In lower cylindroid, described composite spheroid is arranged in the groove that described opening is circle, described composite spheroid and institute Stating cylindroid upper shed is to leave gap between circular groove, is provided with and joins with described composite spheroid in described gap That closes is used for as the glenoid spherical shell of ball-and-socket joint, and 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, described Opening is to be provided with two breach on the wall of circular groove, and two gap positions are relative, the outside wall surface of two arc-shaped protrusions It is smaller than or equal to the distance between said two breach, and this spacing is circular slot opening more than described opening The diameter at place.

Described arc-shaped protrusions is symmetrical about sagittal plane, and described breach is symmetrical about coronalplane.

Described cylindrical protrusion includes the big cylinder being connected with described base plate and the small column being connected with described big cylinder, Described spherical shell is connected with described small column, and described big cylinder overlaps with the centrage of small column, described big cylinder and small column Contact surface crest line use the round and smooth process of fillet, described composite spheroid top exceeds described upper cylindroid, described upper ellipse Post uses the round and smooth process of fillet with the outward flange of described base plate opposite flank, and (opening is the recessed of circle to the inward flange on this surface At channel opening) use tapered expansion to process.

Several circular grooves of random distribution, the centre position of described Elliptic Cylinder it is provided with on the side of described Elliptic Cylinder Being provided with two cross one another rectangle through slots, two rectangle through slots are respectively along sagittal plane and coronalplane traveling.

Described Elliptic Cylinder, arc L plate and composite wood backing strap are respectively adopted one-body molded, described Elliptic Cylinder and arc Shape L plate uses medical titanium alloy material, and described composite wood backing strap uses ultra-high molecular weight polyethylene material or polyether-ether-ketone material, Described arc L plate is provided with hydroxyapatite coating layer with the side of surface of bone contact position and described Elliptic Cylinder.

The beneficial effects of the utility model are embodied in:

The bionical artificial lumbar vertebra of anti-dislocation described in the utility model and intervertebral disc junctional complex have taken into full account the solution of lumbar vertebra Cuing open feature, arc L plate is for combining closely with neighbouring vertebral body, and the stress effectively reducing contact surface is concentrated, and meets normal lumbar vertebra Weight-bearing function, because of the existence of ball-and-socket joint, be more nearly physiological status, composite wood backing strap is embedding with vertebral body ends groove Enter formula connection and not only play cushioning effect, and be possible to prevent to cause composite wood backing strap from vertebra because intervertebral space is broadening in motor process Body component is deviate from.

The further technique effect that this utility model obtains is as follows:

1, the big hemisphere being made up of nearly hemispherical Shell and the polyethylene with arc-shaped protrusions of Ti alloy casting collectively forms Anticreep ball-and-socket joint, not only make activity centre be located exactly at intervertebral space central authorities, it is to avoid because activity centre dystopy may cause Potential complication, and remain the rotation of vertebral body, lateral bending, anteflexion, dorsiflexion and certain pooling feature, it is more nearly physiology shape State.

2, the shape of the base plate of arc L plate described in the utility model is similar with lumbar vertebra soleplate front shape, oval dome Caving in place to the rear of lumbar vertebra soleplate central authorities and match, dome top and periphery are provided with coniform tooth and dash forward, and make base plate be combined with soleplate More closely, firmly.The side plate of arc L plate fits tightly with vertebral body side, increases contact area, effectively avoids stress Concentrating, the big cylindrical protrusion on base plate can bear the cross shear produced because of flexion and extension well, it is to avoid deforms, fracture Generation Deng adverse events.

3, vertebral body parts side described in the utility model is provided with the attachment of the circular groove of random distribution, beneficially surrounding tissue and residual Depositing growing into of sclerotin, two rectangle through slots at middle part can accommodate more implantation bone, thus is more conducive to and surrounding tissue Merge, it is ensured that postoperative long-term stability.

4, arc L plate described in the utility model all has hydroxyapatite coat with the side of surface of bone contact position and vertebral body parts Layer, is more favorable for the fusion with surrounding tissue, it is ensured that activeness and stability.

5, the side plate of arc L plate described in the utility model is provided with two not screws in same level, by not Side plate is firmly fixed to close on vertebral body by equidirectional screw placement, reduces the risk loosening abjection.

Accompanying drawing explanation

Fig. 1 is front view of the present utility model；

Fig. 2 is rearview of the present utility model；

Fig. 3 is side view of the present utility model；

Fig. 4 is top view of the present utility model；

Fig. 5 is upward view of the present utility model；

Fig. 6 is coronalplane sectional view of the present utility model；

Fig. 7 is sagittal plane sectional view of the present utility model；

Fig. 8 is the isometric views of arc L plate；

Fig. 9 is the isometric views of composite wood backing strap；

Figure 10 is the isometric views of vertebral body parts；

Figure 11 is arc L plate each parameter schematic diagram；

Figure 12 is composite wood backing strap each parameter schematic diagram；

In figure: 1 is Elliptic Cylinder, 2 is deep groove, and 3 is arc L plate, and 4 is composite wood backing strap, and 5 is ellipticity dome, and 6 are Coniform tooth is dashed forward, and 7 is cylindrical protrusion, and 8 is arc-shaped protrusions, and 9 is nearly hemispherical Shell, and 10 is side plate, and 11 is screw, and 12 is upper ellipse Post, 13 is lower cylindroid, and 14 is arc groove, and 15 is big hemisphere, and 16 is breach, and 17 is upper cylindroid upper edge, and 18 are Base plate, 19 is crest line after base plate, and 20 is big cylinder, and 21 is small column, and 22 is big cylinder and small column contact surface crest line, and 23 are Arc groove opening, 24 is small cylindrical tank, and 25 is rectangle through slot, and 26 is cylindrical grooves, and 27 is screw.

Detailed description of the invention

With embodiment, this utility model is elaborated below in conjunction with the accompanying drawings.

See Fig. 1-Figure 10, the bionical artificial lumbar vertebra of anti-dislocation described in the utility model and intervertebral disc junctional complex, including Vertebral body parts, disc components and screw 27.Vertebral body parts are made up of with the Elliptic Cylinder 1 of deep groove 2 upper and lower surface, side It is provided with small cylindrical tank 24 and centrally located two rectangle through slots 25, the two rectangle through slots 25 edge arrow respectively of random distribution Shape face and coronalplane traveling, small cylindrical tank 24 is beneficial to surrounding tissue attachment, and rectangle through slot 25 can carry out bone grafting.Along coronalplane It is provided with two cylindrical grooves 26, beneficially patient to the rectangle upper and lower lateral symmetry of through slot opening part of traveling and is clamped and connected compound Body, it is simple to operation technique.Disc components includes two parts, the arc L plate 3 that is i.e. connected with adjacent vertebral bodies and with vertebral body parts phase Composite wood backing strap 4 even, both are connected by anticreep ball-and-socket joint.Arc L plate 3 by base plate 18, arc side plate 10 with cylindric Projection 7 three part forms, and described base plate 18 is in big half elliptic, through the round and smooth process of fillet at crest line 19 after base plate, and itself and phase Adjacent terminal plate of vertebral body contact surface is provided with ellipticity dome 5 and coniform tooth is dashed forward 6, the center of described ellipticity dome 5 and base plate 18 Center superposition, ellipticity dome 5 height is successively decreased to surrounding by center, and coniform tooth is dashed forward and 6 is distributed in the end along ellipse uniform intervals On plate 18；Cylindrical protrusion 7 is arranged at the elliptical center of base plate 18 and composite wood backing strap 4 opposite face, and cylindrical protrusion 7 includes leaning on The big cylinder 20 of nearly base plate 18 and small column 21 two parts away from base plate 18, both centrages overlap, big cylinder and small column Contact surface crest line 22 carries out the round and smooth process of fillet, and small column 21 end is nearly hemispherical Shell 9 structure with two arc-shaped protrusions 8, Described arc-shaped protrusions 8 is symmetrically distributed in nearly hemispherical Shell 9 both sides about sagittal plane；Described arc side plate 10 cross section is four/ One is oval, is positioned at edge, base plate 18 left front, and gradually slopes inwardly, and arc side plate 10 is provided with two not in same level The screw 11 in face, is firmly fixed to close on vertebral body side by arc L plate 3 by screw 27.Composite wood backing strap 4 is by upper and lower two Individual cylindroid is constituted, and upper cylindroid 12 has dug arc groove 14 for one week around its centrage, and arc groove 14 internal face is big hemisphere Body 15 structure, is provided with two small gaps 16 before and after arc groove 14 outside wall surface, said two small gap 16 is symmetrical about coronalplane Be distributed in arc groove 14 outside wall surface, big hemisphere 15 top of arc groove 14 internal face exceeds upper cylindroid 12, arc Groove 14 opening part carries out tapered expansion process, not only can ensure that the mobility of flexion and extension but also can limit hyperkinesia.Arc Connected in star 14 opening overall diameter is less than the distance on nearly hemispherical Shell 9 between two arc-shaped protrusions 8 outside wall surface, and little scarce before and after arc groove Distance between mouth 16 is then equal with the distance between two arc-shaped protrusions 8 outside wall surface, can put into arc by this breach two arc-shaped protrusions 8 Connected in star 14, by rotating after entrance, by arc-shaped protrusions 8 away from breach, thus prevents nearly hemispherical Shell 9 de-from arc groove 14 Go out, further ensure the stability of this ball-and-socket joint.The deep groove that under composite wood backing strap, cylindroid is arranged on Elliptic Cylinder 1 In 2, composite wood backing strap can be effectively avoided to deviate from from groove.Upper cylindroid upper edge 17 carries out the round and smooth process of fillet. In this junctional complex, nearly hemispherical Shell 9 structure matches with upper cylindroid big hemisphere 15 structure composition ball-and-socket joint, ball-and-socket Joint ensure that postoperative closes on the rotation of vertebral body, lateral bending, anteflexion, dorsiflexion function, and described screw 27 lays respectively in screw.Compound The lower cylindroid of material cushion is connected with the deep groove 2 of vertebral body parts, it is ensured that the stability of junctional complex self.

It can be seen that arc groove 14 is exactly for laying the gap of nearly hemispherical Shell 9 from Fig. 6 and Fig. 7.

Vertebral body parts and arc L plate 3, screw 27 take medical titanium alloy material one-body molded, arc L plate 3 and Cortex Lycii Matter contact surface (such as substrate, arc side plate inner face) and vertebral body parts side are equipped with hydroxyapatite coating layer, are more conducive to Fusion with surrounding tissue, it is ensured that postoperative stability.Composite wood backing strap 4 uses ultra high molecular polyethylene material or polyethers Ether ketone material is one-body molded, and inside and outside arc groove 14, inside and outside two walls and nearly hemispherical Shell 9 structure, two sides is all processed by shot blasting, The friction of contact surface can be effectively reduced.

Seeing Figure 10, the high 26mm of Elliptic Cylinder 1 of vertebral body parts, oval major radius is 23mm, and short radius is 15mm, up and down Two sides groove (deep groove) is 10mm deeply, and major radius is 21mm, and short radius is 13mm, and two, side rectangle through slot 25 opening is 3mm × 15mm, the small cylindrical tank 24 of random distribution is 1mm deeply, and radius is 1mm, and cylindrical grooves 26 is 1.5mm deeply, and radius is 1.5mm。

Seeing Fig. 8, Figure 11, the base plate 18 thickness about 2mm of arc L plate 3, in big half elliptic, radian is 225 °, oval long by half Footpath is 23mm, and short radius is 18mm, and after base plate, crest line is through the round and smooth process of fillet that radius is 5mm.Ellipticity on base plate 18 Dome 5 center height 2mm, is successively decreased to surrounding by center, and dome major radius is 15mm, and short radius is 10mm, center and base plate center Overlap.Coniform tooth on base plate 18 is dashed forward 6 high 0.5mm, and end radius is that 0.25mm (only draws part dentation, is intended in figure Reference).The arc side plate 10 thickness about 2mm of arc L plate 3, oval in 1/4th, height is 12mm, is 70～80 with base plate Degree angle, screw 11 radius 2mm.Cylindrical protrusion 7 height overall is 5mm, the big high H1=2mm of cylinder 20, the high H2=of small column 21 3mm, big cylindrical radius is 10mm, and small column radius is 7mm, and both contact surface crest lines carry out the round and smooth place of fillet that radius is 1mm Reason.Small column end nearly hemispherical Shell 9 thickness about 2mm, spherical shell inside radius is 8.1mm, spherical shell plane of the opening and spherical shell vertex distance D1 =5.1mm, two arc-shaped protrusions 8 base plane and spherical shell plane of the opening distance D2=3mm, the wide W1=6.8mm of arc-shaped protrusions 8.

See Fig. 9, Figure 12, the high 3mm of upper cylindroid 12 of composite wood backing strap 4, the lower high H3=10mm of cylindroid 13, upper ellipse Column length radius is 23mm, and short radius is 15mm, and lower cylindroid major radius is 21mm, and short radius is 13mm, limit above upper cylindroid Edge carries out the round and smooth process of fillet that radius is 2mm.The a width of 2.0mm of arc groove 14, deep H4=9mm, big hemisphere 15 diameter phi 1 =16mm, spheroid peak exceeds distance D3=2mm of upper cylindroid 12 plane, and arc groove opening is carried out at tapered expansion Reason, a height of 3mm of taper, is 75 degree of angles (β) with upper cylindroid end face.Before and after arc groove, the deep H5=5.3mm of small gap 16, wide For 7mm.

Hydroxyapatite coating layer thickness is 20 μm.

Above-mentioned parameter suitably can change according to the difference of human body lumbar vertebra size.

The bionical artificial lumbar vertebra of anti-dislocation described in the utility model and intervertebral disc junctional complex assembly relation are as follows: composite wood The lower cylindroid 13 of backing strap 4 is put in the deep groove 2 of Elliptic Cylinder 1, the nearly hemispherical Shell of cylindrical protrusion 7 end of arc L plate 3 9 and arc-shaped protrusions 8 structure and composite wood backing strap 4 on arc groove 14 constitute anticreep ball-and-socket joint, each contact surface of ball-and-socket joint Being highly polished process, it is ensured that the friction and wear that joint is less in motor process, screw 27 passes through screw 11 respectively will Arc L plate 3 is fixed on neighbouring vertebral body.Base plate 18 shape of arc L plate is similar with soleplate, ellipticity dome 5 and terminal plate of vertebral body On depression match, coniform tooth dashes forward 6, and to make base plate 18 be combined with adjacent endplates more firm, and arc side plate 10 adds with adjacent The contact area of nearly vertebral body, effectively reduces stress and concentrates, thus meet the weight-bearing function of lumbar vertebra.Elliptic Cylinder 1 is provided with square Shape through slot 25 and the attachment of random distribution small cylindrical tank 24, more conducively 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 prosthese from deviating from, and remains vertebral body Between rotation, lateral bending, anteflexion, dorsiflexion function, more conform to human body physiological state.

In a word, the bionical artificial lumbar vertebra of anti-dislocation described in the utility model and intervertebral disc junctional complex, including vertebral body parts, Disc components and screw.Vertebral body parts are made up of with the Elliptic Cylinder 1 of deep groove 2 upper and lower surface, and side is provided with random point The small cylindrical tank 24 of cloth and two, centre position rectangle through slot 25.Disc components includes two parts, is i.e. connected with adjacent vertebral bodies Arc L plate 3 and the composite wood backing strap 4 that is connected with Elliptic Cylinder 1, arc L plate 3 by base plate 18, arc side plate 10 with cylindric Projection 7 is constituted, and base plate 18 is provided with ellipticity dome 5 and coniform tooth is dashed forward 6, and arc side plate 10 is provided with two not same flat The screw 11 in face, cylindrical protrusion 7 end is nearly hemispherical Shell 9 structure with two arc-shaped protrusions 8；Composite wood backing strap 4 is by upper Lower two cylindroids are constituted, and lower cylindroid 13 is arranged in the deep groove of Elliptic Cylinder 1, and upper cylindroid 12 digs around its centrage for one week Having arc groove 14, groove inner face is big hemisphere 15 structure, nearly hemispherical Shell structure and upper cylindroid more than half sphere structure phase Coordinating and constitute ball-and-socket joint, articular surface is processed by shot blasting, has hydroxyapatite coating layer with surface of bone contact position.This utility model is not But the vertebral body taken down in lumbar surgery and neighbouring intervertebral disc can be substituted, and remain the rotation of intervertebral disc, bend and stretch and one Fixed pooling feature, both ensure that postoperative stability, had remained again the activeness of lumbar vertebra, raw closer to human body on bionics Reason state.

Claims (10)

1. the bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: this artificial lumbar vertebra and intervertebral disc Junctional complex includes vertebral body parts and is arranged at the disc components at vertebral body parts two ends, and described disc components includes arc Shape L plate (3) and composite wood backing strap (4), described arc L plate (3) include respectively with soleplate and the side view of lumbar vertebra Corresponding base plate (18) and side plate (10), described side plate (10) is arranged on described base plate (18), and described base plate (18) is with multiple Being connected by ball-and-socket joint between condensation material pad (4), described vertebral body parts include Elliptic Cylinder (1), two of Elliptic Cylinder (1) Offering groove on end face, the composite wood backing strap (4) of two disc components is respectively embedded in the corresponding end face of Elliptic Cylinder (1) On groove in.

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: institute State the edge of base plate (18) by oval segmental arc and the M font curved section group that is connected with the two ends rounding off of this ellipse segmental arc Becoming, described oval segmental arc is with corresponding oval short axial symmetry, and described side plate (10) is arranged at the ellipse at described base plate (18) edge In segmental arc, described side plate (10) slopes inwardly and with described base plate (18) in 70～80 degree of angles, and described side plate (10) is upper to be arranged There is screw (11).

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: institute State that to be provided with ellipticity dome (5) and coniform tooth on base plate (18) prominent (6), described ellipticity dome (5) and coniform Tooth prominent (6) and described side plate (10) are positioned at the surface, the same side of described base plate (18), the center of ellipticity dome (5) and the described end Plate (18) center superposition, ellipticity dome (5) height is successively decreased to surrounding by center, and coniform tooth prominent (6) is along ellipse interval point It is distributed on described base plate (18).

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: institute Stating screw (11) is two, and two screws (11) are not in same level.

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: institute State the lower cylindroid (13) in composite wood backing strap (4) includes the groove being embedded on the corresponding end face of described Elliptic Cylinder (1), set It is placed in the upper cylindroid (12) being connected with described lower cylindroid (13) of this slot opening position and for closing as ball-and-socket The composite spheroid of joint ball and socket joint, it is circular groove that described upper cylindroid (12) is provided with opening, and this opening is circular Groove extend to lower cylindroid (13) in, described composite spheroid is arranged in described opening is circular groove, described Leave gap between composite spheroid and described upper cylindroid (12), be provided with in described gap and described composite spheroid Coordinate is used for as the glenoid spherical shell of ball-and-socket joint, described spherical shell and the cylindrical protrusion being arranged on described base plate (18) (7) it is connected.

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: institute Stating and be provided with two arc-shaped protrusions (8) at the edge of opening of spherical shell, said two arc-shaped protrusions (8) position is relative, described opening Being provided with two breach (16) on wall for circular groove, two breach (16) positions are relative, two arc-shaped protrusions (8) Outside wall surface be smaller than or equal to the distance between said two breach (16), and be circular recessed more than described opening Diameter at channel opening.

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: institute Stating arc-shaped protrusions (8) symmetrical about sagittal plane, described breach (16) is symmetrical about coronalplane.

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: institute State cylindrical protrusion (7) and include the big cylinder (20) being connected with described base plate (18) and little with what described big cylinder (20) was connected Cylinder (21), described spherical shell is connected with described small column (21), and described big cylinder (20) overlaps with the centrage of small column (21), The contact surface crest line of described big cylinder (20) and small column (21) uses the round and smooth process of fillet, described composite spheroid top Exceeding described upper cylindroid (12), described upper cylindroid (12) uses fillet with the outward flange of described base plate (18) opposite flank Round and smooth process, the inward flange on this surface uses tapered expansion to process.

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: institute Stating several circular grooves being provided with random distribution on the side of Elliptic Cylinder (1), the centre position of described Elliptic Cylinder (1) is arranged Having two cross one another rectangle through slots (25), two rectangle through slots (25) are respectively along sagittal plane and coronalplane traveling.

A kind of bionical artificial lumbar vertebra of anti-dislocation and intervertebral disc junctional complex, it is characterised in that: Described Elliptic Cylinder (1), arc L plate (3) and composite wood backing strap (4) are respectively adopted one-body molded, described Elliptic Cylinder (1) with And arc L plate (3) uses medical titanium alloy material, described composite wood backing strap (4) uses ultra-high molecular weight polyethylene material or poly- Ether ether ketone material, described arc L plate (3) is provided with hydroxyl phosphorus with the side of surface of bone contact position and described Elliptic Cylinder (1) Lime stone coating.