CN107361885A - Intervertebral disk prosthesis - Google Patents
Intervertebral disk prosthesis Download PDFInfo
- Publication number
- CN107361885A CN107361885A CN201710642081.9A CN201710642081A CN107361885A CN 107361885 A CN107361885 A CN 107361885A CN 201710642081 A CN201710642081 A CN 201710642081A CN 107361885 A CN107361885 A CN 107361885A
- Authority
- CN
- China
- Prior art keywords
- soleplate
- intervertebral disk
- hole
- disk prosthesis
- nucleus pulposus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
Abstract
The invention provides a kind of intervertebral disk prosthesis, is arranged between adjacent the first centrum and the second centrum, intervertebral disk prosthesis includes：First soleplate, it is connected with the first centrum；Second soleplate, it is connected with the second centrum；Nucleus pulposus, it is arranged between the first soleplate and the second soleplate, first soleplate and the second soleplate are engaged with nucleus pulposus to complete the activity of intervertebral disk prosthesis, wherein, the first through hole structure of the upper and lower surface of the first soleplate of insertion is provided with first soleplate, and/or second be provided with soleplate the second soleplate of insertion upper and lower surface the second through-hole structure.Technical scheme efficiently solves the problem of frictional dissipation is serious between the soleplate and nucleus pulposus of intervertebral disk prosthesis in the prior art.
Description
Technical field
The present invention relates 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, start clinical practice the 1980s.It has not only cut off pathological interspinal disk, and recovers simultaneously
The stability and movable function of the section centrum, spinal fusion can be avoided to accelerate the situation hair of Adjacent segment degeneration in theory
It is raw.
Artificial disc replacement is mainly used in 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 can prevents the regression of adjacent segment, while keeps the physiological activity scope of backbone.
Cervical spondylopathy is due to that the retrogression pathological changes of cervical intervertebral disk and its Secondary cases articuli intervertebrales change, and stimulates or oppresses and be neighbouring
Tissue, cause 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 is made using cobalt chrome molybdenum material in the market, the friction between soleplate and nucleus pulposus easily causes end
Plate and nucleus pulposus heavy wear, the service life of artificial intervertebral disk is influenceed, the daily life of patient can be also influenceed if situation is serious.
The content of the invention
The present invention is intended to provide a kind of intervertebral disk prosthesis, with solve the soleplate of intervertebral disk prosthesis in the prior art and nucleus pulposus it
Between frictional dissipation it is serious the problem of.
To achieve these goals, the invention provides a kind of intervertebral disk prosthesis, the first adjacent centrum and are arranged on
Between two centrums, intervertebral disk prosthesis includes：First soleplate, it is connected with the first centrum；Second soleplate, it is connected with the second centrum
Connect；Nucleus pulposus, it is arranged between the first soleplate and the second soleplate, the first soleplate and the second soleplate are engaged with nucleus pulposus to complete intervertebral
The activity of disc prosthesis, wherein, be provided with the first soleplate insertion the first soleplate upper and lower surface first through hole structure,
And/or second be provided with soleplate the second soleplate of insertion upper and lower surface the second through-hole structure.
Further, first through hole structure is multiple, multiple radial arrangements of first through hole structure, first through hole structure
Hole in the lower surface of the first soleplate is inwardly gathered, first through hole structure the upper surface of the first soleplate hole to outgoing
Dissipate, and/or, the second through-hole structure is multiple, multiple radial arrangements of second through-hole structure, and the second through-hole structure is whole second
The hole of the upper surface of plate is inwardly gathered, and hole of second through-hole structure in the lower surface of the second soleplate outwards dissipates.
Further, multiple first through hole structures point to the center arrangement of nucleus pulposus, or, multiple first through hole structure compositions
Multiple first through hole groups, the axis of multiple first through hole structures in each first through hole group are parallel to each other, each first through hole group it
Between multiple first through hole structures the angled arrangement of axis.
Further, multiple second through-hole structures point to the center arrangement of nucleus pulposus, or, multiple second through-hole structure compositions
Multiple second sets of vias, the axis of multiple second through-hole structures in each second sets of vias are parallel to each other, each second sets of vias it
Between multiple second through-hole structures the angled arrangement of axis.
Further, multiple first through hole structures density at the center of nucleus pulposus is big, density at the center away from nucleus pulposus
It is small, and/or, multiple second through-hole structures density at the center of nucleus pulposus is big, and density is small at the center away from nucleus pulposus.
Further, first through hole structure and/or the second through-hole structure are capillary.
Further, nucleus pulposus includes columnar part and curved face part, and relative two surface of columnar part is plane, curved face part bag
First surface portion and the second curved face part are included, first surface portion is arranged on the first surface of columnar part the first soleplate of direction, and second
Curved face part is arranged on columnar part towards on the second surface of the second soleplate, is provided with the lower surface of the first soleplate and first surface
The first recess that portion is engaged, the depth of the first recess are less than the height of curved face part, be provided with the upper surface of the second soleplate with
The second recess that second curved face part is engaged, the depth of the second recess are less than the height of the second curved face part.
Further, the curvature in first surface portion is different with the curvature of the second curved face part.
Further, the curvature in first surface portion is identical with the curvature of the first recess, the curvature of the second curved face part and second
The curvature of recess is identical.
Further, first surface portion and the surface of the second curved face part are elliposoidal, when intervertebral disk prosthesis is attached to
When between one centrum and the second centrum, the major axis of the ellipsoidal surface of first surface portion and the second curved face part is along intervertebral disk prosthesis
Left and right arrangement, the short axle of the ellipsoidal surface of first surface portion and the second curved face part is along the front and rear arrangement of intervertebral disk prosthesis.
Further, the major axis of the ellipsoidal surface of first surface portion and the second curved face part and the ratio of short axle are 1.2
To between 1.5.
Further, first surface portion and the second curved face part are both with respect to columnar part eccentric setting, when intervertebral disk prosthesis is pacified
When being filled between the first centrum and the second centrum, first surface portion and the second curved face part are close to rear side.
Further, the first soleplate and/or the second soleplate and/or nucleus pulposus are ceramic material.
Apply the technical scheme of the present invention, nucleus pulposus is arranged between the first soleplate and the second soleplate, enables the first soleplate
All around swing and rotate clockwise or counterclockwise relative to the second soleplate.First soleplate and the second soleplate respectively with it is adjacent
The first centrum be connected with the second centrum, make patient can normally make in daily life bending or twisting action.The
One through-hole structure penetrates the first soleplate, makes caused body fluid of human body itself etc. can be by between the first centrum and the first soleplate
Gap enters first through hole structure, and then enters on the contact surface of the first soleplate and nucleus pulposus, the shape between the first soleplate and nucleus pulposus
Into liquid film, lubrication is played, reduces the friction between the first soleplate and nucleus pulposus.Similarly, the second through-hole structure insertion second is whole
Plate, body fluid is entered the second through-hole structure by the gap between the second centrum and the second soleplate, reduce the second soleplate and
Friction between nucleus pulposus.First through hole structure and the second through-hole structure enable body fluid automatically flow into the first soleplate and nucleus pulposus it
Between, between the second soleplate and nucleus pulposus, keep having body fluid lubrication all the time between said structure, alleviate the abrasion between material.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the structural representation of the embodiment of the intervertebral disk prosthesis according to the present invention；
Fig. 2 shows the cross section structure diagram of Fig. 1 intervertebral disk prosthesis；
Fig. 3 shows the A-A of Fig. 2 intervertebral disk prosthesis to cross section structure diagram；
Fig. 4 shows the structural representation of the first soleplate of Fig. 1 intervertebral disk prosthesis；
Fig. 5 shows the overlooking the structure diagram of the nucleus pulposus of Fig. 1 intervertebral disk prosthesis；
Fig. 6 shows the C-C of Fig. 5 nucleus pulposus to cross section structure diagram；And
Fig. 7 shows the D-D of Fig. 6 nucleus pulposus to cross section structure diagram.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
10th, the first soleplate；11st, first through hole structure；12nd, the first recess；13rd, the first loose structure；14th, the first quil；
20th, the second soleplate；21st, the second through-hole structure；22nd, the second recess；23rd, the second loose structure；24th, the second quil；30th, nucleus pulposus；
31st, columnar part；311st, first surface；312nd, second surface；32nd, curved face part；321st, first surface portion；322nd, the second curved face part.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the application and its application or makes
Any restrictions.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the application protection.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
Unless specifically stated otherwise, the part and positioned opposite, the digital table of step otherwise illustrated in these embodiments
Up to the unlimited scope of the present application processed of formula and numerical value.Simultaneously, it should be appreciated that for the ease of description, each portion shown in accompanying drawing
The size divided not is to be drawn according to the proportionate relationship of reality.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely exemplary, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms is represented in following accompanying drawing with letter, therefore, once it is defined in a certain Xiang Yi accompanying drawing, then subsequent attached
It need not be further discussed in figure.
As shown in figure 1, the intervertebral disk prosthesis of the present embodiment be placed in as the substitute of the interverbebral disc of human body itself it is adjacent
Between first centrum and the second centrum, intervertebral disk prosthesis includes the first soleplate 10, the second soleplate 20 and nucleus pulposus 30.Wherein,
One soleplate 10 is connected with the first centrum, and the second soleplate 20 is connected with the second centrum, and nucleus pulposus 30 is arranged on the He of the first soleplate 10
Between second soleplate 20.First soleplate 10 and the second soleplate 20 are engaged with nucleus pulposus 30 to complete the activity of intervertebral disk prosthesis.Its
In, be provided with the first soleplate 10 insertion the first soleplate 10 upper and lower surface first through hole structure 11, the second soleplate
The second through-hole structure 21 of the upper and lower surface of the second soleplate 20 of insertion is provided with 20.
Using the technical scheme of the present embodiment, nucleus pulposus 30 is arranged between the first soleplate 10 and the second soleplate 20, makes first
Soleplate 10 all around can swing and rotate clockwise or counterclockwise relative to the second soleplate 20.First soleplate 10 and second
Soleplate 20 is connected with the first adjacent centrum and the second centrum respectively, patient is normally made bending in daily life
Or twisting action.First through hole structure 11 penetrates the first soleplate 10, makes caused body fluid of human body itself etc. can be by first
Gap between centrum and the first soleplate 10 enters first through hole structure 11, and then enters the first contact with nucleus pulposus 30 of soleplate 10
On face, liquid film is formed between the first soleplate 10 and nucleus pulposus 30, plays lubrication, is reduced between the first soleplate 10 and nucleus pulposus 30
Friction.Similarly, the second through-hole structure 21 penetrates the second soleplate 20, enable body fluid by the second centrum and the second soleplate 20 it
Between gap enter the second through-hole structure 21, reduce the friction between the second soleplate 20 and nucleus pulposus 30.The He of first through hole structure 11
Second through-hole structure 21 enables body fluid to automatically flow between the first soleplate 10 and nucleus pulposus 30, the second soleplate 20 and nucleus pulposus 30 it
Between, keep having body fluid lubrication all the time between said structure, alleviate the abrasion between material.
Further, as shown in Figures 1 to 4, the first through hole structure 11 of the present embodiment is multiple, multiple first through hole knots
11 radial arrangement of structure.Specifically, as shown in Fig. 2 first through hole structure 11 the lower surface of the first soleplate 10 hole to
Inside gather, hole of the first through hole structure 11 in the upper surface of the first soleplate 10 outwards dissipates；Second through-hole structure 21 is also more
It is individual, multiple second through-hole structure, 21 radial arrangements, the second through-hole structure 21 the upper surface of the second soleplate 20 hole to
Inside gather, hole of second through-hole structure 21 in the lower surface of the second soleplate 20 outwards dissipates.
By taking upright human body as an example, in adjacent the first centrum and the second centrum, the first centrum is located above the second centrum.
Accordingly, in the intervertebral disk prosthesis of the present embodiment, the first soleplate 10 is located at the top of the second soleplate 20, and the first soleplate 10 is arranged on
The lower surface of first centrum, the upper surface of the first soleplate 10 are in contact with the lower surface of the first centrum, the following table of the first soleplate 10
Face is in contact with the upper surface of nucleus pulposus 30.The first through hole structure 11 of above-mentioned radial arrangement will flow to the upper table of the first soleplate 10
Face body fluid is directed to the core of nucleus pulposus 30.First soleplate 10 is rotated or swung around nucleus pulposus 30, and the center of nucleus pulposus 30 is born
Power and friction be greater than power and the friction that periphery is born, therefore, the first through hole structure 11 of said structure makes body fluid preferential
The middle part of nucleus pulposus 30 is concentrated on, is penetrated into automatically further according to distribution of force in the gap between the first soleplate 10 and nucleus pulposus 30.
Similarly, the second through-hole structure 21 makes body fluid preferentially concentrate on the middle part of nucleus pulposus 30, is oozed automatically further according to distribution of force
Thoroughly into the gap between the second soleplate 20 and nucleus pulposus 30.
Specifically, as shown in Fig. 2 in the present embodiment, left and right directions (intervertebral of multiple first through hole structures 11 along Fig. 2
The fore-and-aft direction of disc prosthesis) the multiple first through hole groups of composition, the axle of multiple first through hole structures 11 between each first through hole group
The angled arrangement of line；As shown in figure 3, the axis of multiple first through hole structures 11 in each first through hole group is parallel to each other, so that
Multiple first through hole structures 11 in same first through hole group radial arrangement in a section or perspective plane.Similarly, it is more
Individual second through-hole structure 21 forms multiple second sets of vias, the axis phase of multiple second through-hole structures 21 in each second sets of vias
It is mutually parallel, the angled arrangement of axis of multiple second through-hole structures 21 between each second sets of vias.
Preferably, as shown in Figure 2 and Figure 4, in the intervertebral disk prosthesis of the present embodiment, multiple first through hole structures 11 are close to marrow
Density is big at the center of core 30, and density is small at the center away from nucleus pulposus 30.Density herein is referred to the first of unit area
The quantity of the hole of first through hole structure 11 in the lower surface of soleplate 10.Said structure further optimizes body fluid in the first soleplate
Distribution between 10 and nucleus pulposus 30, be advantageous to the friction between body fluid the first soleplate 10 of reduction and nucleus pulposus 30, and then mitigate first
The abrasion of soleplate 10 and nucleus pulposus 30, ensure the service life of intervertebral disk prosthesis.
Similarly, multiple second through-hole structures 21 density at the center of nucleus pulposus 30 is big, close at the center away from nucleus pulposus 30
Spend small.Preferably, the through-hole structure 21 of first through hole structure 11 and second is capillary of the diameter between 0.2 to 1 millimeter, is utilized
The contact surface that the capillarity of capillary guides contact surface of the body fluid automatically between soleplate and centrum between soleplate and nucleus pulposus into,
So as to avoid the contact surface that body fluid smoothly can not enter between soleplate and nucleus pulposus under gravity.
Specifically, as shown in Figures 5 to 7, the nucleus pulposus 30 of the present embodiment includes columnar part 31 and curved face part 32, columnar part 31
Relative two surface be plane, curved face part 32 includes the curved face part 322 of first surface portion 321 and second, first surface portion 321
Columnar part 31 is arranged on towards on the first surface 311 of the first soleplate 10, the second curved face part 322 is arranged on columnar part 31 towards
On the second surface 312 of two soleplates 20, first be engaged with first surface portion 321 is provided with the lower surface of the first soleplate 10
Recess 12, the depth of the first recess 12 are less than the height of curved face part 32, are provided with the upper surface of the second soleplate 20 and the second song
The second recess 22 that face 322 is engaged, the depth of the second recess 22 are less than the height of the second curved face part 322.
The curved face part 32 of nucleus pulposus 30 stretches into recess (the first recess 12 of soleplate (the first soleplate 10 and the second soleplate 20) up and down
With the second recess 22) in, to realize rotation of the first soleplate 10 of intervertebral disk prosthesis relative to the second soleplate 20.In rotation process
In, because difference in height, the flat surface (first surface 311 and second of nucleus pulposus 30 be present in the depth of recess and the height of curved face part
Surface 312) rotary stopper effect is played, when the edge of recess contacts with the flat surface of columnar part 31, upper and lower soleplate can not
Continuation rotates relative to nucleus pulposus 30.Difference in height i.e. between recess and curved face part 32 defines the maximum of the intervertebral disk prosthesis of the present embodiment
Rotation amplitude, there is appropriate rotate against to ensure upper and lower soleplate during subject patient bends and stretches.
Further, it is different with the stressing conditions of the second soleplate 20 for the first soleplate 10, the first surface of the present embodiment
The curvature of the curvature in portion 321 and the second curved face part 322 has made the adjustment of adaptability respectively, to optimize the first soleplate 10 and second
The stressing conditions of soleplate 20.
Further, as shown in Figures 2 and 3, the accordingly curvature in first surface portion 321 and first in the present embodiment
The curvature of recess 12 is identical, and the curvature of the second curved face part 322 is identical with the curvature of the second recess.Said structure makes first surface portion
321 are fitted close with the first recess 12, are advantageous to form vacuum between the recess 12 of first surface portion 321 and first, so as to promote
Enter body fluid to flow to the contact surface between the recess 12 of first surface portion 321 and first.Said structure is advantageous to holding first simultaneously
Body fluid in through-hole structure 11 keeps flow regime, avoids the less first through hole structure 11 in aperture from blocking.
Similarly, the effect above is also embodied between the second curved face part 322 and the second recess 22, and said structure is more beneficial for body
Liquid offsets self gravitation, is flowed to the contact surface between the second curved face part 322 and the second recess 22.
Specifically, as shown in Figures 5 to 7, the surface of the curved face part 322 of first surface portion 321 and second of the present embodiment is equal
For elliposoidal, when intervertebral disk prosthesis is attached between the first centrum and the second centrum, the curved face part of first surface portion 321 and second
The major axis of 322 ellipsoidal surface arranges (above-below direction in such as Fig. 5) along the left and right of intervertebral disk prosthesis, first surface portion 321
With the short axle of the ellipsoidal surface of the second curved face part 322 along the front and rear arrangement (right and left in such as Fig. 5 and Fig. 6 of intervertebral disk prosthesis
To).
Preferably, the major axis and short axle of the ellipsoidal surface of the curved face part 322 of first surface portion 321 and second of the present embodiment
Ratio between 1.2 to 1.5.The intervertebral disk prosthesis of said structure disclosure satisfy that the activity in corpus vertebrae normal range (NR),
Simultaneously in intervertebral disk prosthesis activity above and below soleplate be not easy to separate with nucleus pulposus 30.
What deserves to be explained is as shown in Figure 5 and Figure 6, the curved face part 32 of the present embodiment is directed to the stress point between biological taper profile
Cloth, set using relative to the eccentric position of columnar part 31, i.e., the axis of columnar part 31 is not conllinear with the center line of curved face part 32.
By taking the vertebra of human body as an example, in the everyday actions of people, in vertebra, rear pillar be main stress area.Such as Fig. 5 and Fig. 6 institutes
Show, the left side of columnar part 31 is inclined at the center of the curved face part 322 of first surface portion 321 and second of the present embodiment.So, when this
When between the first centrum and the second centrum of the intervertebral disk prosthesis implantation human spine of embodiment, (the first surface portion of curved face part 32
321 and second curved face part 322) can closer in vertebra, rear pillar prevent column to adapt to the actual force-bearing situation of human body
The centre of motion is preposition when the axis in portion and the centerline collineation of curved face part, causes interverbebral disc to be acted on by eccentric force, causes first eventually
Plate and the second soleplate are not parallel, and then cause intervertebral disk prosthesis force unbalance, the problems such as easily making patient leave sequelae.
The thickness of first soleplate 10 is by it close to the side at the center in first surface portion 321 to remote first surface portion 321
The side at center gradually increase, and/or, the thickness of the second soleplate 20 is by it close to the side at the center of the second curved face part 322
Gradually increase to the side at the center away from the second curved face part 322.
As shown in Figure 1 to Figure 3, the first loose structure 13, the first loose structure 13 and are additionally provided with the first soleplate 10
One centrum is in contact, and the first quil 14, the first quil 14 are provided with the surface being in contact on the first soleplate 10 with the first centrum
Stretch into the first centrum.The second loose structure 23 is additionally provided with second soleplate 20, the second loose structure 23 connects with the second centrum
Touch, the second quil 24 is provided with the surface that the second soleplate 20 is in contact with the second centrum, the second quil 24 stretches into the second centrum.
After the intervertebral disk prosthesis of the present embodiment is implanted between the first centrum and the second centrum, the first quil 14 is pierced into first
For the bone surface of centrum to fix the first soleplate 10, the first loose structure 13 forms bone trabecula, with the healing of surgical wound and the
The growth of one centrum bone surface, the sclerotin on the surface that the first centrum is in contact with the first soleplate 10 grow into the shape of the first loose structure 13
Into new bone, further strengthen the structural strength between the first centrum and the first soleplate 10.Similarly, the second quil 24 is pierced into the second centrum
Bone surface to fix the second soleplate 20, the second loose structure 23 forms bone trabecula, healing and the second vertebra with surgical wound
The growth of body bone surface, the sclerotin on the surface that the second centrum is in contact with the second soleplate 20 grow into the second loose structure 23 and formed newly
Bone, further strengthen the structural strength between the second centrum and the second soleplate 20.
Preferably, first soleplate 10 of the present embodiment, the second soleplate 20 and nucleus pulposus 30 are that ceramic material is made.Ceramics
Material has good wearability, and has good compatibility with human body, will not be caused in MRI and CT scan serious
Artifact, be advantageous to doctor's observation and judge the situation of patient.
In other unshowned embodiments, the first soleplate and the second soleplate can be made of metal material, such as cobalt
Chrome molybdenum, titanium alloy etc.；Nucleus pulposus can be made of plastic material, such as polyethylene, polyether-ether-ketone etc..Above-mentioned material species
Free collocation can be carried out according to being actually needed.
It is further preferred that first soleplate 10 of the present embodiment, the second soleplate 20 and nucleus pulposus 30 can pass through 3D printing
Mode be made.3D printing has the characteristics that efficiency high, saves material, suitable for making baroque product.By joint portion
Loose structure, quil and matrix are integrally formed by the form of 3D printing, can also be protected while guaranteed efficiency, saving material
Demonstrate,prove the structural strength of joint portion.
It should be noted that the intervertebral disk prosthesis of the application is not limited to the intervertebral disc replacement of human body.Above-described embodiment
Intervertebral disk prosthesis can apply and have vertebrate all, so as to receive the receptor biological of the intervertebral disk prosthesis of the application
Vertebra or cervical vertebra normally can bend and reverse, and above-described embodiment is only the explanation carried out by taking human body as an example.
The intervertebral disk prosthesis (not shown) of embodiment two table first through hole structure and the second through-hole structure are not
It is mode.Specifically, multiple first through hole structures of the intervertebral disk prosthesis of embodiment two point to the center arrangement of nucleus pulposus, so that the
One through-hole structure is using the center of nucleus pulposus as the centre of sphere, in the form of spherical radially outward.Similarly, multiple second through-hole structures are also in ball
Shape radiation sickness points to the center arrangement of nucleus pulposus.
It is may not be in the centre of sphere pointed by the first through hole structure of balloon, radiation and the second through-hole structure in nucleus pulposus
The bearing of trend of the heart, each first through hole structure or the second through-hole structure points to same point.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
Nucleus pulposus is arranged between the first soleplate and the second soleplate, enable the first soleplate relative to the second soleplate all around
Swing and rotate clockwise or counterclockwise.First soleplate and the second soleplate respectively with the first adjacent centrum and the second centrum phase
Even, patient is made normally to make bending or twisting action in daily life.First through hole structure penetrates the first soleplate,
Body fluid etc. caused by human body itself is entered first through hole structure by the gap between the first centrum and the first soleplate, enter
And enter on the contact surface of the first soleplate and nucleus pulposus, liquid film is formed between the first soleplate and nucleus pulposus, plays lubrication, is reduced
Friction between first soleplate and nucleus pulposus.Similarly, the second through-hole structure penetrates the second soleplate, body fluid is passed through the second centrum
Gap between the second soleplate enters the second through-hole structure, reduces the friction between the second soleplate and nucleus pulposus.First through hole knot
Structure and the second through-hole structure enable body fluid to automatically flow between the first soleplate and nucleus pulposus, between the second soleplate and nucleus pulposus, keep
All the time there is body fluid lubrication between said structure, alleviate the abrasion between material.
In the description of the present application, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, vertical,
Vertically, orientation or position relationship indicated by level " and " top, bottom " etc. are normally based on orientation or position shown in the drawings and closed
System, it is for only for ease of description the application and simplifies description, in the case where not making opposite explanation, these nouns of locality do not indicate that
There must be specific orientation with the device or element for implying meaning or with specific azimuth configuration and operation, therefore can not manage
Solve as the limitation to the application protection domain；The noun of locality " inside and outside " refers to relative to inside and outside each part profile in itself.
For the ease of description, space relative terms can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.For example, if the device in accompanying drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
Furthermore, it is necessary to explanation, limits parts, it is only for be easy to using the word such as " first ", " second "
Corresponding parts to be distinguished, do not have Stated otherwise such as, above-mentioned word does not have particular meaning, therefore it is not intended that to this
Apply for the limitation of protection domain.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (13)
1. a kind of intervertebral disk prosthesis, it is arranged between adjacent the first centrum and the second centrum, it is characterised in that the interverbebral disc
Prosthese includes：
First soleplate (10), it is connected with first centrum；
Second soleplate (20), it is connected with second centrum；
Nucleus pulposus (30), be arranged between first soleplate (10) and second soleplate (20), first soleplate (10) and
Second soleplate (20) is engaged to complete the activity of the intervertebral disk prosthesis with the nucleus pulposus (30),
Wherein, first that the upper and lower surface for penetrating first soleplate (10) is provided with first soleplate (10) is logical
Pore structure (11), and/or, the upper and lower surface for penetrating second soleplate (20) is provided with second soleplate (20)
The second through-hole structure (21).
2. intervertebral disk prosthesis according to claim 1, it is characterised in that the first through hole structure (11) is more to be multiple
The radial arrangement of the individual first through hole structure (11), the first through hole structure (11) is under first soleplate (10)
The hole on surface is inwardly gathered, the first through hole structure (11) the upper surface of first soleplate (10) hole to outgoing
Dissipate, and/or, second through-hole structure (21) is multiple, the radial arrangement of multiple second through-hole structures (21), described
Hole of second through-hole structure (21) in the upper surface of second soleplate (20) is inwardly gathered, second through-hole structure (21)
Hole in the lower surface of second soleplate (20) outwards dissipates.
3. intervertebral disk prosthesis according to claim 2, it is characterised in that multiple first through hole structures (11) point to institute
The center arrangement of nucleus pulposus (30) is stated, or, multiple first through hole structures (11) form multiple first through hole groups, and each described the
The axis of multiple first through hole structures (11) in one sets of vias is parallel to each other, multiple between each first through hole group
The angled arrangement of the axis of the first through hole structure (11).
4. intervertebral disk prosthesis according to claim 2, it is characterised in that multiple second through-hole structures (21) point to institute
The center arrangement of nucleus pulposus (30) is stated, or, multiple second through-hole structures (21) form multiple second sets of vias, and each described the
The axis of multiple second through-hole structures (21) in two sets of vias is parallel to each other, multiple between each second sets of vias
The angled arrangement of the axis of second through-hole structure (21).
5. the intervertebral disk prosthesis according to any one of claim 2, it is characterised in that multiple first through hole structures
(11) density is big at the center of the nucleus pulposus (30), and density is small at the center away from the nucleus pulposus (30), and/or, it is multiple
Second through-hole structure (21) density at the center of the nucleus pulposus (30) is big, close at the center away from the nucleus pulposus (30)
Spend small.
6. intervertebral disk prosthesis according to claim 5, it is characterised in that the first through hole structure (11) and/or described
Second through-hole structure (21) is capillary.
7. intervertebral disk prosthesis according to claim 1, it is characterised in that the nucleus pulposus (30) includes columnar part (31) and song
Facial (32), relative two surface of the columnar part (31) is plane, and the curved face part (32) includes first surface portion
(321) and the second curved face part (322), the first surface portion (321) are arranged on the columnar part (31) towards the described first end
On the first surface (311) of plate (10), it is whole towards described second that second curved face part (322) is arranged on the columnar part (31)
On the second surface (312) of plate (20), it is provided with the lower surface of first soleplate (10) and the first surface portion (321)
The first recess (12) being engaged, the depth of first recess (12) are less than the height of the curved face part (32), and described second
The second recess (22) being engaged with second curved face part (322) is provided with the upper surface of soleplate (20), described second is recessed
The depth in portion (22) is less than the height of second curved face part (322).
8. intervertebral disk prosthesis according to claim 7, it is characterised in that the curvature of the first surface portion (321) and institute
The curvature for stating the second curved face part (322) is different.
9. intervertebral disk prosthesis according to claim 7, it is characterised in that the curvature of the first surface portion (321) and institute
State that the curvature of the first recess (12) is identical, the curvature of second curved face part (322) and the curvature phase of second recess (22)
Together.
10. intervertebral disk prosthesis according to claim 7, it is characterised in that the first surface portion (321) and described second
The surface of curved face part (322) is elliposoidal, when the intervertebral disk prosthesis is attached between first centrum and the second centrum
When, the major axis of the ellipsoidal surface of the first surface portion (321) and second curved face part (322) is false along the interverbebral disc
The short axle of the ellipsoidal surface of the left and right arrangement of body, the first surface portion (321) and second curved face part (322) is along institute
State the front and rear arrangement of intervertebral disk prosthesis.
11. intervertebral disk prosthesis according to claim 10, it is characterised in that the first surface portion (321) and described
The major axis of the ellipsoidal surface of two curved face parts (322) and the ratio of short axle are between 1.2 to 1.5.
12. intervertebral disk prosthesis according to claim 7, it is characterised in that the first surface portion (321) and described second
Curved face part (322) is both with respect to the columnar part (31) eccentric setting, when the intervertebral disk prosthesis is attached to first centrum
And second between centrum when, the first surface portion (321) and second curved face part (322) are close to rear side.
13. the intervertebral disk prosthesis according to any one of claim 1 to 12, it is characterised in that first soleplate (10)
And/or second soleplate (20) and/or the nucleus pulposus (30) are ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642081.9A CN107361885A (en) | 2017-07-31 | 2017-07-31 | Intervertebral disk prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710642081.9A CN107361885A (en) | 2017-07-31 | 2017-07-31 | Intervertebral disk prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107361885A true CN107361885A (en) | 2017-11-21 |
Family
ID=60309243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710642081.9A Pending CN107361885A (en) | 2017-07-31 | 2017-07-31 | Intervertebral disk prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107361885A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108095863A (en) * | 2018-01-20 | 2018-06-01 | 西安市红会医院 | A kind of 3D printing cervical artificial disc prosthese |
| CN108969162A (en) * | 2018-07-27 | 2018-12-11 | 深圳清华大学研究院 | A kind of intervertebral motion retaining device |
| CN109106478A (en) * | 2018-08-17 | 2019-01-01 | 中国人民解放军第四军医大学 | A kind of durable artificial disc after arthroplasty |
| CN110368149A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disk prosthesis |
| CN112294502A (en) * | 2020-10-30 | 2021-02-02 | 四川大学华西医院 | Assembly type total intervertebral disc prosthesis based on 3D printing technology and manufacturing method thereof |
| CN112451184A (en) * | 2020-12-18 | 2021-03-09 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disc prosthesis |
| WO2021169746A1 (en) * | 2020-02-24 | 2021-09-02 | 汕头大学 | 3d printed bionic artificial cervical intervertebral joint |
| CN117017590A (en) * | 2023-10-09 | 2023-11-10 | 北京爱康宜诚医疗器材有限公司 | Artificial vertebral prosthesis assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040111160A1 (en) * | 2001-07-18 | 2004-06-10 | Evans David L. | Prosthetic devices employing oxidized zirconium and other abrasion resistant surfaces contacting surfaces of cross-linked polyethylene |
| JP2005143800A (en) * | 2003-11-14 | 2005-06-09 | Takiron Co Ltd | Biomaterial for artificial cartilage |
| CN101056598A (en) * | 2004-10-18 | 2007-10-17 | 卡林·巴特纳-扬茨 | Inner prosthesis of vertebral disc with sports adapting edge for lumbar and cervical vertebra |
| CN101686860A (en) * | 2006-04-19 | 2010-03-31 | 脊椎动力学公司 | Can be by the artificial intervertebral disk of minimally invasive surgical techniques implantation |
| CN106333770A (en) * | 2016-09-29 | 2017-01-18 | 万邦德医疗科技有限公司 | Movable artificial cervical intervertebral prosthesis |
| CN208910599U (en) * | 2017-07-31 | 2019-05-31 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disk prosthesis |
-
2017
- 2017-07-31 CN CN201710642081.9A patent/CN107361885A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040111160A1 (en) * | 2001-07-18 | 2004-06-10 | Evans David L. | Prosthetic devices employing oxidized zirconium and other abrasion resistant surfaces contacting surfaces of cross-linked polyethylene |
| JP2005143800A (en) * | 2003-11-14 | 2005-06-09 | Takiron Co Ltd | Biomaterial for artificial cartilage |
| CN101056598A (en) * | 2004-10-18 | 2007-10-17 | 卡林·巴特纳-扬茨 | Inner prosthesis of vertebral disc with sports adapting edge for lumbar and cervical vertebra |
| CN101686860A (en) * | 2006-04-19 | 2010-03-31 | 脊椎动力学公司 | Can be by the artificial intervertebral disk of minimally invasive surgical techniques implantation |
| CN106333770A (en) * | 2016-09-29 | 2017-01-18 | 万邦德医疗科技有限公司 | Movable artificial cervical intervertebral prosthesis |
| CN208910599U (en) * | 2017-07-31 | 2019-05-31 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disk prosthesis |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108095863A (en) * | 2018-01-20 | 2018-06-01 | 西安市红会医院 | A kind of 3D printing cervical artificial disc prosthese |
| CN108969162A (en) * | 2018-07-27 | 2018-12-11 | 深圳清华大学研究院 | A kind of intervertebral motion retaining device |
| CN109106478A (en) * | 2018-08-17 | 2019-01-01 | 中国人民解放军第四军医大学 | A kind of durable artificial disc after arthroplasty |
| CN109106478B (en) * | 2018-08-17 | 2023-10-13 | 中国人民解放军第四军医大学 | Durable artificial intervertebral disc prosthesis |
| CN110368149A (en) * | 2019-08-05 | 2019-10-25 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disk prosthesis |
| CN110368149B (en) * | 2019-08-05 | 2024-03-15 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disc prosthesis |
| WO2021169746A1 (en) * | 2020-02-24 | 2021-09-02 | 汕头大学 | 3d printed bionic artificial cervical intervertebral joint |
| CN112294502A (en) * | 2020-10-30 | 2021-02-02 | 四川大学华西医院 | Assembly type total intervertebral disc prosthesis based on 3D printing technology and manufacturing method thereof |
| CN112451184A (en) * | 2020-12-18 | 2021-03-09 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disc prosthesis |
| CN117017590A (en) * | 2023-10-09 | 2023-11-10 | 北京爱康宜诚医疗器材有限公司 | Artificial vertebral prosthesis assembly |
| CN117017590B (en) * | 2023-10-09 | 2024-01-23 | 北京爱康宜诚医疗器材有限公司 | Artificial vertebral prosthesis assembly |
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