CN207520241U - Intervertebral disk prosthesis - Google Patents

Abstract

The utility model provides a kind of intervertebral disk prosthesis, is arranged between adjacent the first centrum and the second centrum, intervertebral disk prosthesis includes：First soleplate, including the first joint portion being in contact with the first centrum and positioned at first mounting base of first joint portion far from the first centrum side, the material of the first mounting base is different from the first joint portion；Second soleplate, including the second joint portion being in contact with the second centrum and positioned at second mounting base of the second joint portion far from the second centrum side, the material of the second mounting base is different from second joint portion；Nucleus pulposus is arranged between the first mounting base and the second mounting base, and the first mounting base and the second mounting base match the activity to complete intervertebral disk prosthesis with nucleus pulposus.The technical solution of the utility model efficiently solve the problems, such ass that Integrated implant ability in the prior art and articular surface wearability cannot be taken into account.

Description

Intervertebral disk prosthesis

Technical field

The utility model is related to bone surgery implant field, in particular to a kind of intervertebral disk prosthesis.

Background technology

Artificial disc replacement (total disc replacement TDR) is to treat degenerative disc in recent years The new method of disease starts clinical practice the 1980s.It has not only cut off pathological interspinal disk, but also restores simultaneously The stability and movable function of the segment centrum can theoretically avoid spinal fusion from accelerating the situation hair of Adjacent segment degeneration It is raw.

Artificial disc replacement is mainly used for treating the degenerative disc diseases such as discogenic pain.

Recent domestic has carried out the development and application of artificial intervertebral disk, it is intended that both can reach human body intervertebral Disk excision decompression and the effect of fixed fusion, and the regression of adjacent segment can be prevented, while keep the physiological activity range of backbone.

Cervical spondylosis is the retrogression pathological changes and its change of secondary articuli intervertebrales due to cervical intervertebral disk, stimulates or oppresses and is neighbouring Tissue causes a kind of common disease of corresponding sings and symptoms.It is reported that China patient with cervical Spondylopathy has reached nearly 200,000,000 at present, and suffer from Person shows the trend of becoming younger at the age.The design of cervical artificial disc is initially started from application in the 1960s, and developing then Since the eighties.So far, prosthese only few in number is recognized into clinical.Carry out from the end of the year 2003 artificial in China Cervical disc replacement surgery, what is used for many years is all imported product, and the product of China's cervical artificial disc in the market is complete at present Import is relied on, the place of production is Switzerland, Germany and the U.S..

Artificial intervertebral disk currently on the market is made of cobalt chrome molybdenum material, can be caused when carrying out MRI and CT scan tight The artifact of weight, influences the clinical observation and judgement of doctor.Although titanium alloy has good biocompatibility, its anti-friction scouring Damage poor performance, it is considered to be a kind of unfavorable articular surface material.

Utility model content

The utility model is intended to provide a kind of intervertebral disk prosthesis, to solve the Integrated implant energy of intervertebral disk prosthesis in the prior art The problem of power and articular surface wearability cannot be taken into account.

To achieve these goals, the utility model provides a kind of intervertebral disk prosthesis, is arranged on the first adjacent centrum And second between centrum, intervertebral disk prosthesis includes：First soleplate including the first joint portion being in contact with the first centrum and is located at First mounting base of first joint portion far from the first centrum side, the material of the first mounting base are different from the first joint portion；Second Soleplate, including the second joint portion being in contact with the second centrum and positioned at second peace of the second joint portion far from the second centrum side Seat is filled, the material of the second mounting base is different from second joint portion；Nucleus pulposus is arranged between the first mounting base and the second mounting base, First mounting base and the second mounting base match the activity to complete intervertebral disk prosthesis with nucleus pulposus.

Further, used by the first mounting base material wearability better than used by the first joint portion material it is resistance to Mill property and/or, the wearability of material is better than the wearability of material used by second joint portion used by the second mounting base.

Further, nucleus pulposus includes columnar part and curved face part, and opposite two surface of columnar part is plane, and curved face part is set It puts on first surface of the columnar part towards the first soleplate, is provided on the lower surface of the first mounting base matched with curved face part Recess portion, the depth of recess portion are less than the height of curved face part.

Further, curved face part is relative to columnar part eccentric setting.

Further, the thickness of the first joint portion by its center close to curved face part side to far from curved face part center Side gradually increase and/or, the thickness in second joint portion is by the side at its center close to curved face part to far from curved face part The side at center gradually increases.

Further, the surface of curved face part is elliposoidal, when intervertebral disk prosthesis install to the first centrum and the second centrum it Between when, the long axis of ellipsoidal surface is arranged along the left and right of intervertebral disk prosthesis, and the short axle on the surface of elliposoidal is along intervertebral disk prosthesis Front and rear arrangement.

Further, the long axis of ellipsoidal surface and the ratio of short axle are between 1.2 to 1.5.

Further, it is set on the second surface of columnar part fluted.

Further, it is positioned apart from the surface towards nucleus pulposus of the second mounting base there are two protrusion, two protrude Portion is symmetrical arranged, and the position that nucleus pulposus corresponds to protrusion is provided with spacing breach, and protrusion is threaded through in spacing breach.

Further, there is predetermined gap, so that nucleus pulposus can be with respect to the second mounting base between spacing breach and protrusion It moves and/or rotates within a predetermined range.

Further, intervertebral disk prosthesis further includes department of assembly, and department of assembly includes the be arranged on the first soleplate first assembling Notch and be arranged on protrusion outer surface second assembling notch.

Further, the first joint portion includes the first matrix and the first porous structure for being arranged on the first matrix, and first Porous structure be in contact with the first centrum and/or, second joint portion include the second matrix and be arranged on the second matrix second Porous structure, the second porous structure are in contact with the second centrum.

Further, the first quil, the first quil are provided on the surface being in contact on the first joint portion with the first centrum Stretch into the first centrum and/or, the second quil, the second quil are provided on the surface that second joint portion is in contact with the second centrum Stretch into the second centrum.

Further, the first dovetail groove is provided in the first mounting base, is provided on the first joint portion and the first dovetail groove The cooperation that the first ramp structure being adapted, the first mounting base and the first joint portion pass through the first dovetail groove and the first ramp structure Link together and/or, the second dovetail groove is provided in the second mounting base, is provided in second joint portion and the second dovetail groove The cooperation that the second ramp structure being adapted, the second mounting base and second joint portion pass through the second dovetail groove and the second ramp structure It links together.

Further, the first joint portion and second joint portion are made of titanium alloy material 3D printing.

Using the technical solution of the utility model, the first soleplate is divided into for its different working condition in upper and lower two surfaces The first joint portion matched with the first centrum and with matched first mounting base of nucleus pulposus, and two kinds of material systems are respectively adopted Into intervertebral disk prosthesis being allow to make full use of the different characteristics of different materials, to meet respective application environment to the maximum extent. Similarly, the second soleplate is also classified into the different second joint portion of material and the second mounting base.Above structure plays each to the greatest extent The advantage of material avoids its shortcoming, can take into account biocompatibility and abrasion resistance simultaneously, and high degree solves at present Intervertebral disk prosthesis cause since material is single be implanted into organism after it is ineffective, hold time the problem of short.

Description of the drawings

The accompanying drawings which form a part of this application are used to provide a further understanding of the present invention, this practicality Novel illustrative embodiments and their description do not form the improper restriction to the utility model for explaining the utility model. In the accompanying drawings：

Fig. 1 shows the structure diagram of the embodiment of intervertebral disk prosthesis according to the present utility model；

Fig. 2 shows the left view schematic diagrams of the decomposition texture of the intervertebral disk prosthesis of Fig. 1；

Fig. 3 shows the schematic cross-sectional view of the intervertebral disk prosthesis of Fig. 2；

Fig. 4 shows the schematic rear view of the decomposition texture of the intervertebral disk prosthesis of Fig. 1；

Fig. 5 shows the structure diagram of the first soleplate of the intervertebral disk prosthesis of Fig. 1；

Fig. 6 shows the structure diagram of the nucleus pulposus of the intervertebral disk prosthesis of Fig. 1；And

Fig. 7 shows the structure diagram of the second soleplate of the intervertebral disk prosthesis of Fig. 1.

Wherein, above-mentioned attached drawing is marked including the following drawings：

10th, the first soleplate；11st, the first joint portion；111st, the first matrix；112nd, the first porous structure；113rd, the first quil； 12nd, the first mounting base；13rd, recess portion；20th, the second soleplate；21st, second joint portion；211st, the second matrix；212nd, the second porous knot Structure；213rd, the second quil；22nd, the second mounting base；23rd, protrusion；30th, nucleus pulposus；31st, columnar part；311st, first surface；312nd, Two surfaces；313rd, groove；32nd, curved face part；33rd, spacing breach；40th, department of assembly；41st, the first assembling notch；42nd, the second assembling lacks Mouthful.

Specific embodiment

It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

The intervertebral disk prosthesis of the present embodiment is arranged between adjacent the first centrum and the second centrum, and Fig. 1 shows basis The structure diagram of the embodiment of the intervertebral disk prosthesis of the utility model.As shown in Figure 1 to Figure 3, intervertebral disk prosthesis includes first Soleplate 10, the second soleplate 20 and nucleus pulposus 30.Wherein, the first soleplate 10 include the first joint portion 11 for being in contact with the first centrum and Positioned at first mounting base 12 of first joint portion 11 far from the first centrum side, the material of the first mounting base 12 is different from first and closes Section portion 11.Second soleplate 20 includes the second joint portion 21 being in contact with the second centrum and positioned at second joint portion 21 far from second Second mounting base 22 of centrum side, the material of the second mounting base 22 are different from second joint portion 21.Nucleus pulposus 30 is arranged on first Between 12 and second mounting base 22 of mounting base, the first mounting base 12 and the second mounting base 22 match to complete intervertebral with nucleus pulposus 30 The activity of disc prosthesis.

It should be noted that " activity of intervertebral disk prosthesis " mentioned here refers to, intervertebral disk prosthesis mimic biology vertebra The rotation and the action of translation that disk is made.Space coordinates as shown in Figure 1, it is assumed that the first soleplate 10, the second soleplate 20 It is arranged with nucleus pulposus 30 along Z-direction, then the intervertebral disk prosthesis of the present embodiment can do the rotation relative to X-axis, Y-axis and Z axis, with And the translation along X-axis and/or Y-axis.In addition, the first soleplate 10, the second soleplate 20 and 30 three of nucleus pulposus it is unseparated under the conditions of, The intervertebral disk prosthesis of the present embodiment can also carry out the translation along Z-direction in a certain range.

In addition, stating the activity dimension of interverbebral disc for convenience, above-mentioned space coordinates, the intervertebral of the present embodiment are established The scope of activities of disc prosthesis is not limited to that various dimensions can also be completed in solid space along the translation of axis and rotation merely The compound movement of superposition.

Using the technical solution of the present embodiment, the first soleplate 10 is divided into for its different working condition in upper and lower two surfaces The first joint portion 11 matched with the first centrum and with 30 matched first mounting base 12 of nucleus pulposus, and two kinds of materials are respectively adopted Material is made, and intervertebral disk prosthesis is allow to make full use of the different characteristics of different materials, to meet respective application to the maximum extent Environment.Similarly, the second soleplate 20 is also classified into different 21 and second mounting base 22 of second joint portion of material.Above structure maximum journey The advantage of each material of performance of degree avoids its shortcoming, can take into account biocompatibility and abrasion resistance simultaneously, high degree Solve the problems, such as current intervertebral disk prosthesis cause since material is single be implanted into organism after it is ineffective, hold time it is short.

Specifically, it is mutually bonded with the first centrum for the first joint portion 11 needs and keeps opposing stationary work shape State and the first mounting base 12 need with 30 relative motion of nucleus pulposus and generate the working condition of friction, and the first of the present embodiment closes The Bone Ingrowth ability of material is better than the Bone Ingrowth ability of material used by the first mounting base 12, the first peace used by section portion 11 The wearability of material is better than the wearability of material used by the first joint portion 11 used by dress seat 12.Similarly, second joint The Bone Ingrowth ability of material is better than the Bone Ingrowth ability of material used by the second mounting base 22, the second installation used by portion 21 The wearability of material is better than the wearability of material used by second joint portion 21 used by seat 22.

It should be noted that Bone Ingrowth ability (or Integrated implant ability etc.) herein refers in bone tissue and implant Binding ability.After intervertebral disk prosthesis implantation human body, the cell on the surface that centrum is in contact with intervertebral disk prosthesis is after being stimulated New bone can be differentiated to form.According to material and the difference of structure, different intervertebral disk prosthesis stimulations and the ability for receiving new bone formation Difference, first joint portion 11 of the present embodiment and second joint portion 21 use the material of higher Bone Ingrowth ability, to improve vertebra Between disc prosthesis and interpyramidal compatibility and bonding strength.

In the other embodiment being not shown in figure, it can also be plated by increasing in the first mounting base and the second mounting base The mode of layer improves wearability, its Bone Ingrowth energy is improved by the form for increasing coating on the first joint portion and second joint portion Power.

Preferably, the first joint portion 11 and second joint portion 21 are preferably using titanium alloy, the first mounting base 12 and the second peace It fills seat 22 and preferably uses vitallium.Titanium has body fluid, secretion in organism etc. because of its good " one's own physical property " Good corrosion resistance, and common method for disinfection is can adapt to, suitable for being in contact with organism sclerotin or meat fiber Place.Vitallium has stronger wearability compared to titanium alloy, can preferably adapt to the friction between nucleus pulposus 30, Ensure the time that the first mounting base 12 and the second mounting base 22 are resident in vivo.And above structure can reduce interverbebral disc The prosthese metal artifacts that vitallium generates in MRI and CT scan, and then reduce to doctor's clinical observation and the shadow judged It rings.

As shown in Figure 1 to Figure 3, the nucleus pulposus 30 of the present embodiment include columnar part 31 and curved face part 32, columnar part 31 it is opposite Two surfaces for plane, curved face part 32 is arranged on columnar part 31 towards on the first surface 311 of the first soleplate 10, the first installation It is provided on the lower surface of seat 12 and is less than the height of curved face part 32 with 32 matched recess portion 13 of curved face part, the depth of recess portion 13. The curved face part 32 of nucleus pulposus 30 is stretched into the recess portion 13 of 12 lower surface of the first mounting base, to realize the first soleplate 10 of intervertebral disk prosthesis Relative to the rotation of the second soleplate 20.In rotation process, because there is height in the depth of recess portion 13 and the height of curved face part 32 Difference, the first surface 311 of plane plays rotary stopper effect, when the edge of recess portion 13 and the first surface 311 of columnar part 31 connect When touching, the first soleplate 10 cannot continue to rotate relative to nucleus pulposus 30, i.e., the difference in height between recess portion 13 and curved face part 32 defines this reality The maximum rotation amplitude of the intervertebral disk prosthesis of example is applied, to ensure that the first soleplate 10 has appropriate relative rotation during bending and stretching.

What deserves to be explained is as shown in Fig. 2, the curved face part 32 of the present embodiment is adopted for the distribution of force between biological taper profile It is set with relative to 31 eccentric position of columnar part, i.e., the axis of columnar part 31 is not conllinear with the center line of curved face part 32.With people For the vertebra of body, in the everyday actions of people, in vertebra, rear pillar be main stress area.As shown in Figure 1 to Figure 3, originally It is biased to the Y-axis forward direction setting of columnar part 31 in the center of the curved face part 32 of embodiment.In this way, the intervertebral disk prosthesis when the present embodiment is planted When entering human spine, curved face part 32 can closer in vertebra, rear pillar prevent column to adapt to the force-bearing situation of human body reality The centre of motion is preposition when the axis in shape portion and the centerline collineation of curved face part, and interverbebral disc is caused to be acted on by eccentric force, leads to first Soleplate and the second soleplate are not parallel, and then the problems such as lead to intervertebral disk prosthesis force unbalance, easily patient is enabled to leave sequelae.

Further, as shown in Figures 2 to 5, the surface of the curved face part 32 of the present embodiment is elliposoidal, works as intervertebral disk prosthesis When installation is between the first centrum and the second centrum, the long axis of ellipsoidal surface is arranged along the left and right (X-axis) of intervertebral disk prosthesis, ellipse The short axle on spherical surface is arranged along (Y-axis) before and after intervertebral disk prosthesis.Make curved face part 32 in human body sagittal plane (YZ faces) upslide The curvature of shadow is different from the curvature projected on human coronary face (XZ faces), and to meet human motion when is different in different directions Range of flexion.

Meanwhile as shown in figure 3, the use elliposoidal recess portion of 13 the being also adapted to property of recess portion of the first mounting base 12, due to ellipsoid The long axis of shape is different from minor axis length, and when intervertebral disk prosthesis is done along during the rotation of Z axis, recess portion 13 can provide torsion to curved face part 32 Square, and then nucleus pulposus 30 is driven to rotate on the upper surface of the second soleplate 20, curved face part 32 is avoided to undertake what all movements generated Friction, reduces the work load of curved face part 32 to a certain extent, while provides better adaptive ability.

Preferably, the long axis of ellipsoidal surface and the ratio of short axle are between 1.2 to 1.5.

The working condition for needing to often rub against according to nucleus pulposus 30, it is preferred that nucleus pulposus is using polyethylene, PEEK (polyethers ethers Ketone), the wear-resistant materials such as ceramics are made.

Also, there is radian for biological bone surface, as shown in figure 3, first joint portion 11 of the present embodiment Thickness gradually increased by side to the side at center far from curved face part 32 at its center close to curved face part 32, second joint The thickness in portion 21 is gradually increased by the side at side to the center far from curved face part 32 at its center close to curved face part 32.With people Centrum for, curved face part 32 is biased to the canalis spinalis setting of centrum, and thickness of first joint portion 11 at canalis spinalis is less than far from vertebra Thickness at pipe, thickness of the second joint portion 21 at canalis spinalis are less than far from the thickness at canalis spinalis.

Further, as shown in Fig. 3, Fig. 4 and Fig. 6, between 31 and second mounting base 22 of columnar part to reduce the present embodiment Friction, set fluted 313 on the second surface 312 of columnar part 31.Receiving body fluids are to play the work of lubrication in groove 313 With so as to reduce the abrasion of nucleus pulposus 30 in vivo.In the embodiment being not shown in figure, the number and shape of groove are not limited to In the present embodiment situation shown in figure, groove could be provided as it is parallel or intersect it is a plurality of, can also be arranged to it is latticed, To improve the lubricity between nucleus pulposus and the second soleplate.

Further, as shown in Figure 1 to Figure 4 with shown in Fig. 7, the surface towards nucleus pulposus 30 of second mounting base 22 of the present embodiment On be positioned apart from there are two protrusion 23, two protrusions 23 are symmetrical arranged, and nucleus pulposus 30 corresponds to the position setting of protrusion 23 There is spacing breach 33, protrusion 23 is threaded through in spacing breach 33.Protrusion 23 is matched with spacing breach 33, ensure that second Assembling structure between mounting base 22 and nucleus pulposus 30 is stablized, so as to which nucleus pulposus 30 be prevented to be detached from the second soleplate 20.

Further, as shown in Figures 1 to 4, there is predetermined gap, so that nucleus pulposus between spacing breach 33 and protrusion 23 30 can move and/or rotate within a predetermined range relative to the second mounting base 22.Protrusion 23 limits nucleus pulposus 30 in water simultaneously The amplitude peak for moving and rotating in plane (XY faces) ensures that intervertebral disk prosthesis is movable in safe range.In addition, above structure The shearing force between the contact surface of bone and intervertebral disk prosthesis is effectively attenuated, reduces the effect for centrum rear Minor articulus Power.

Furthermore, it is contemplated that reduce the difficulty of implant surgery, as shown in Fig. 2, Fig. 4, Fig. 5 and Fig. 7, the interverbebral disc of the present embodiment Prosthese further includes department of assembly 40, and department of assembly includes the be arranged on the first soleplate 10 first assembling notch 41 and is arranged on protrusion Second assembling notch 42 of the outer surface in portion 23.First assembling notch 41 and second, which assembles notch 42, to be convenient for 10 He of the first soleplate The clamping of second soleplate 20, and then convenient for the progress of implant surgery process.

As shown in Figures 2 to 5, the first joint portion 11 includes the first matrix 111 and be arranged on the first matrix 111 first Porous structure 112, the first porous structure 112 are in contact with the first centrum, are in contact on the first joint portion 11 with the first centrum The first quil 113 is provided on surface, the first quil 113 stretches into the first centrum.In the intervertebral disk prosthesis implantation the of the present embodiment After between one centrum and the second centrum, the first quil 113 is pierced into the bone surface of the first centrum to fix the first joint portion 11, and first Porous structure 112 forms bone trabecula, with the healing of surgical wound and the growth of the first centrum bone surface, the first centrum and first The sclerotin on the surface that joint portion 11 is in contact grows into the first porous structure 112 and forms new bone, further strengthens the first centrum and the Structural strength between one joint portion 11.

Further, as shown in Figure 4 and Figure 5, it is provided with the first dovetail groove in first mounting base 12 of the present embodiment, first The first ramp structure being adapted with the first dovetail groove is provided on joint portion 11, the first mounting base 12 and the first joint portion 11 are logical Cross cooperating together for the first dovetail groove and the first ramp structure.Above structure is easily achieved and sound construction, makes two kinds Material is bonded, and is realized the application and played the respective advantage of two kinds of materials while avoid its shortcoming, and solve mesh Preceding intervertebral disk prosthesis cause since material is single be implanted into organism after it is ineffective, hold time the problem of short.

The design that angle between the bottom surface and inclined-plane of dovetail groove can be embodied according to actual needs, dovetail groove are opposite Two inclined-planes extending direction can also either connection structure be needed to select parallel or is intersected according to intensity requirement, specifically Intersecting angle can also carry out preferably as the case may be.

Similarly, as shown in Fig. 2 to Fig. 4 and Fig. 7, second joint portion 21 includes the second matrix 211 and is arranged on the second matrix The second porous structure 212 on 211, the second porous structure 212 are in contact with the second centrum.21 and second centrum of second joint portion The second quil 213 is provided on the surface being in contact, the second quil 213 stretches into the second centrum.It is provided in second mounting base 22 Second dovetail groove is provided with the second ramp structure being adapted with the second dovetail groove, the second mounting base 22 in second joint portion 21 With the cooperating together by the second dovetail groove and the second ramp structure of second joint portion 21.

Further, as shown in Figures 2 and 3, centrum, first quil 113 of the present embodiment and the are inserted into for convenience of quil Two quils 213 use asymmetrical design.When the intervertebral disk prosthesis of the present embodiment pushes centrum to from diagram left side to diagram right side, The left side of quil is higher than right side, to prevent intervertebral disk prosthesis from deviating to the left.

Further to strengthen the connection structure of dovetail groove and inclined-plane, can be added between dovetail groove and inclined-plane raised and recessed It falls into, to limit the opposite slip between joint portion and mounting base.And by two lateral intermediate clampings after joint portion is inserted into mounting base Dovetail groove, so that dovetail groove fully clamps inclined-plane.

First joint portion 11 described above and second joint portion 21 can pass through 3D printing system by material of titanium alloy Into.3D printing has the characteristics that efficient, saving material, suitable for making complicated product.By the porous structure of joint portion, Quil and matrix are integrally formed by the form of 3D printing, and joint portion is can also ensure that while guaranteed efficiency, saving material Structural strength.

First mounting base 12 and the second mounting base 22 can also Ceramics material completed by 3D printing technique, due to pottery Porcelain sheet will not generate artifact, and be ideal with good wearability as nonmetallic materials in MRI or CT scan Seat material is installed.

It can be seen from the above description that the above embodiments of the present invention achieve the following technical effects：

First soleplate is divided into matched with the first centrum first for its different working condition in upper and lower two surfaces and closes Section portion and with 30 matched first mounting base of nucleus pulposus, and two kinds of materials are respectively adopted and are made, allow intervertebral disk prosthesis abundant Using the different characteristics of different materials, to meet respective application environment to the maximum extent.Similarly, the second soleplate is also classified into material Different second joint portions and the second mounting base.Above structure plays the advantage of each material, avoids its shortcoming to the greatest extent, i.e., Biocompatibility and abrasion resistance can be taken into account simultaneously, and the current intervertebral disk prosthesis that solves of high degree is led since material is single Cause implantation organism after it is ineffective, hold time the problem of short.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (15)

1. a kind of intervertebral disk prosthesis is arranged between adjacent the first centrum and the second centrum, which is characterized in that the interverbebral disc Prosthese includes：

First soleplate (10), including the first joint portion (11) being in contact with first centrum and positioned at first joint portion (11) the first mounting base (12) far from the first centrum side, the material of first mounting base (12) are different from described the One joint portion (11)；

Second soleplate (20), including the second joint portion (21) being in contact with second centrum and positioned at the second joint portion (21) the second mounting base (22) far from the second centrum side, the material of second mounting base (22) are different from described the Two joint portions (21)；

Nucleus pulposus (30) is arranged between first mounting base (12) and second mounting base (22), first mounting base (12) and second mounting base (22) matches activity to complete the intervertebral disk prosthesis with the nucleus pulposus (30).

2. intervertebral disk prosthesis according to claim 1, which is characterized in that material used by first mounting base (12) Wearability better than material used by first joint portion (11) wearability and/or, the second mounting base (22) institute The wearability of the material of use is better than the wearability of material used by the second joint portion (21).

3. intervertebral disk prosthesis according to claim 1, which is characterized in that the nucleus pulposus (30) includes columnar part (31) and song Facial (32), opposite two surface of the columnar part (31) is plane, and the curved face part (32) is arranged on the columnar part (31) it towards on the first surface (311) of first soleplate (10), is provided on the lower surface of first mounting base (12) With the curved face part (32) matched recess portion (13), the depth of the recess portion (13) is less than the height of the curved face part (32).

4. intervertebral disk prosthesis according to claim 3, which is characterized in that the curved face part (32) is relative to the columnar part (31) eccentric setting, when the intervertebral disk prosthesis is installed between first centrum and the second centrum, the curved face part (32) close to rear side.

5. intervertebral disk prosthesis according to claim 4, which is characterized in that the thickness of first joint portion (11) is leaned on by it The side at the side at the center of the nearly curved face part (32) to the center far from the curved face part (32) gradually increase and/or, institute The thickness in second joint portion (21) is stated by the side at its center close to the curved face part (32) to far from the curved face part (32) The side at center gradually increase.

6. intervertebral disk prosthesis according to claim 3, which is characterized in that the surface of the curved face part (32) is elliposoidal, When the intervertebral disk prosthesis is installed between first centrum and the second centrum, the long axis of the ellipsoidal surface is described in The left and right arrangement of intervertebral disk prosthesis, the front and rear arrangement of the short axle on the surface of the elliposoidal along the intervertebral disk prosthesis.

7. intervertebral disk prosthesis according to claim 6, which is characterized in that the long axis of the ellipsoidal surface and the ratio of short axle Value is between 1.2 to 1.5.

8. intervertebral disk prosthesis according to claim 3, which is characterized in that the second surface (312) of the columnar part (31) It is upper that fluted (313) are set.

9. intervertebral disk prosthesis according to claim 1, which is characterized in that the direction marrow of second mounting base (22) It is positioned apart from the surface of core (30) there are two protrusion (23), two protrusions (23) are symmetrical arranged, the nucleus pulposus (30) position of the corresponding protrusion (23) is provided with spacing breach (33), and the protrusion (23) is threaded through the limiting and lacks In mouth (33).

10. intervertebral disk prosthesis according to claim 9, which is characterized in that the spacing breach (33) and the protrusion (23) between have predetermined gap so that the nucleus pulposus (30) can relatively described second mounting base (22) move within a predetermined range Dynamic and/or rotation.

11. intervertebral disk prosthesis according to claim 9, which is characterized in that the intervertebral disk prosthesis further includes department of assembly (40), the department of assembly includes the be arranged on first soleplate (10) first assembling notch (41) and is arranged on described convex Go out the second assembling notch (42) of the outer surface in portion (23).

12. intervertebral disk prosthesis according to claim 1, which is characterized in that first joint portion (11) includes the first base Body (111) and the first porous structure (112) being arranged on first matrix (111), first porous structure (112) with First centrum be in contact and/or, the second joint portion (21) is including the second matrix (211) and is arranged on described second The second porous structure (212) on matrix (211), second porous structure (212) are in contact with second centrum.

13. intervertebral disk prosthesis according to claim 1, which is characterized in that with described on first joint portion (11) Be provided with the first quil (113) on the surface that one centrum is in contact, first quil (113) stretch into first centrum and/ Or, the second quil (213) is provided on the surface that is in contact with second centrum of the second joint portion (21), described second Quil (213) stretches into second centrum.

14. intervertebral disk prosthesis according to claim 1, which is characterized in that is provided on first mounting base (12) One dovetail groove is provided with the first ramp structure being adapted with first dovetail groove on first joint portion (11), described The cooperation that first mounting base (12) and first joint portion (11) pass through first dovetail groove and first ramp structure Link together and/or, the second dovetail groove is provided on second mounting base (22), is set on the second joint portion (21) It is equipped with the second ramp structure being adapted with second dovetail groove, second mounting base (22) and the second joint portion (21) cooperating together by second dovetail groove and second ramp structure.

15. the intervertebral disk prosthesis according to any one of claim 1 to 14, which is characterized in that first joint portion (11) it is made with the second joint portion (21) of titanium alloy material 3D printing.