CN106236334A - Artificial cervical intervertebral disk prosthesis - Google Patents
Artificial cervical intervertebral disk prosthesis Download PDFInfo
- Publication number
- CN106236334A CN106236334A CN201610873632.8A CN201610873632A CN106236334A CN 106236334 A CN106236334 A CN 106236334A CN 201610873632 A CN201610873632 A CN 201610873632A CN 106236334 A CN106236334 A CN 106236334A
- Authority
- CN
- China
- Prior art keywords
- soleplate
- vertebral pulp
- plate body
- limit stop
- arc convex
- 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.)
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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
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30649—Ball-and-socket joints
Abstract
The present invention relates to a kind of meet human cervical spine intercalated disc natural motion pattern, more meet half restricted type cervical artificial disc prosthese of human spine's Anatomical Structure profile.This cervical artificial disc prosthese, forms ball-and-socket joint including upper soleplate, vertebral pulp and lower soleplate, described upper soleplate lower surface and described vertebral pulp upper surface, and described vertebral pulp lower surface is fitted with described lower soleplate upper surface and forms the movable matching mechanism of grasping type with lower soleplate.The sphere dome that described ball-and-socket joint is protruded by the spherical groove of upper soleplate lower surface molding and vertebral pulp upper surface is constituted, make described upper soleplate relative to described vertebral pulp realize anteflexion/after stretch, left/right lateral bending, left/right rotate six direction free motion.The movable matching mechanism of described grasping type is made up of with lower soleplate upper surface vertebral pulp lower surface；Make described vertebral pulp can realize in direction, front, rear, left and right moving and around central axis at lower soleplate upper surface, and be difficult to abjection.
Description
Technical field
The present invention relates to orthopaedic implants field, meet human cervical spine intercalated disc natural motion pattern particularly to one
Half restricted type cervical artificial disc prosthese.
Background technology
Cervical intervertebral disk prosthesis product has had Bryan, Prestige LP, Prodisc-C, PCM, CerviCore, Mobi-
Many moneys imported products such as C, Discover, but the Specifeca tion speeification of these products is all with external crowd's skeletal size as base
Plinth is designed, unsuitable for Chinese population skeletal size.Domestic cervical artificial disc prosthetic designs major part is all copied
The imitated structure design that external product size is carried out, high, middle high, rear height front for product Specifeca tion speeification such as cervical vertebral space,
Footmark face sizes etc. do not have after compatriots' skeletal size is measured in detail, adds up and analyzed, based on compatriots' skeleton chi
Very little feature is designed.
CN103315830 B discloses a kind of band herringbone two-way retaining pawl Ω type cervical artificial disc and implants prosthese,
The non-contacting elastic construction of Ω type of this prosthese above bottom plate integration replaces traditional sphere, saddle spherical bearing structure author horse
Ungulate elastic piece structure, upper and lower end plate outer surface is provided with retaining pawl two-way with the herringbone that upper and lower vertebra anchors, improves prosthese
And the surface stress of vertebral body is to extend life-span resisting fatigue, this prosthese relies on the non-contacting bullet of Ω type of upper and lower end plate integration
Property the bearing capacity of structure and impact energy absorbability, recover and maintain the height of intervertebral space, keep segmental stabilization, protect
Stay the flexing of intervertebral disc, stretching and compression shock absorption function, be disadvantageous in that: this prosthese is integral structure, it is impossible to depend on
Axial rotation is realized, it is impossible to realize human spine's proper motion by self structure.
CN204839838 U discloses a kind of cervical artificial disc prosthese, and structure includes: goes up soleplate, lower soleplate and is located at
Anti abrasive vertebral pulp between upper soleplate and lower soleplate, has rotation, bends and stretches, translates three-dimensional six-freedom degree space operation model
Enclose, it is possible to meet the cervical vertebra motor function of human normal, solve prior art has problems, be disadvantageous in that: vertebral pulp is solid
Dingan County is contained on lower soleplate, and center of rotation is fixed.Cervical intervertebral disk is its vertebral pulp during cervical vertebral segment produces relative motion
Position is constantly in variation, and i.e. it is provided that instantaneous variable center of rotation, thus fixing center of rotation does not meets human body
The instantaneous variable virtual condition of vertebral pulp center of rotation.
Summary of the invention
It is an object of the invention to provide one to meet human cervical spine intercalated disc natural motion pattern, more meet human spine's structure
Dissect half restricted type cervical artificial disc prosthese of profile.
The technical solution of the present invention is described cervical artificial disc prosthese, including upper soleplate, vertebral pulp and lower soleplate, its
Being characterized in that, described upper soleplate lower surface and described vertebral pulp upper surface form ball-and-socket joint, described vertebral pulp lower surface and institute
State the laminating of lower soleplate upper surface and form the movable matching mechanism of grasping type with lower soleplate.
As preferably: the ball that described ball-and-socket joint is protruded with vertebral pulp upper surface by the spherical groove of upper soleplate lower surface molding
Face dome is constituted, make described upper soleplate relative to described vertebral pulp realize anteflexion/after stretch, left/right lateral bending, left/right rotate six sides
To free motion.
As preferably: described upper soleplate plate body, plate body lower surface by upper and lower surface level or with an inclination angle caves in into
The pawl that the arc convex of the spherical groove of type, plate body upper surface protuberance, plate body upper surface are symmetrically or non-symmetrically distributed, before plate body
End or both sides are provided with is easy to the groove of clamping or protruding composition.
As preferably: the movable matching mechanism of described grasping type is made up of with lower soleplate upper surface vertebral pulp lower surface；Make described
Vertebral pulp can realize in direction, front, rear, left and right moving and around central axis at lower soleplate upper surface, and is difficult to abjection.
As preferably: if plate body, plate body upper surface that described lower soleplate is by upper and lower surface level or with an inclination angle are provided with
Plate body is divided into the cross recess of corpus medullae cross dog embedding for vertebral pulp, plate body by dry limit stop post, described some limit stop posts
Pawl, plate body front end or both sides that the arc convex of lower surface protuberance, plate body lower surface are symmetrically or non-symmetrically distributed are provided with and are easy to
The groove of clamping or protruding composition.
As preferably: described vertebral pulp by the corpus medullae of cross dog, the plane of corpus medullae lower surface and the laminating of lower soleplate upper surface,
The sphere dome composition that corpus medullae upper surface protuberance matches with upper soleplate lower surface spherical groove.
As preferably: the surface that the surface that described upper soleplate contacts with vertebra, lower soleplate contact with vertebra is equipped with arc
Projection, described arc convex is the integral curved projection of whole endplate surface, or the local arc convex of soleplate portion；
Described arc convex is the projection of rule, or is irregular projection, as there is part plan different radian combinations or top, with really
Protecting the external shape of soleplate to match with vertebral body concave shaped anatomical surface, inner matter contacts tightr with osseous tissue.
As preferably: described vertebral pulp and the way of contact of some limit stop posts of described lower soleplate upper surface be face contact,
The one of linear contact lay.
As preferably: described limit stop post be column, the outer surface of described column be irregularly shaped, described spacing
The end shape of bumping post is the one of flat shape, the inclined plane shape spherical shape concentric with vertebral pulp sphere top；Limit stop post
Highly equal to or less than the height with vertebral pulp contact site, produce with upper soleplate when preventing from rotating and interfere.
Another technical solution of the present invention is described cervical artificial disc prosthese, including upper soleplate, vertebral pulp and lower end
Plate, it is characterized in that, described upper soleplate lower surface and described vertebral pulp upper surface form ball-and-socket joint, described vertebral pulp lower surface
Fit with described lower soleplate upper surface and form the movable matching mechanism of grasping type with lower soleplate；Described ball-and-socket joint is by under upper soleplate
The sphere dome that the spherical groove of surface forming and vertebral pulp upper surface protrude is constituted, and makes described upper soleplate real relative to described vertebral pulp
Existing the most anteflexion/after stretch, left/right lateral bending, left/right rotate the free motion of six direction；Described upper soleplate by upper and lower surface level or
Plate body, plate body lower surface with an inclination angle cave on the spherical groove of molding, the arc convex of plate body upper surface protuberance, plate body
The pawl that surface is symmetrically or non-symmetrically distributed, plate body front end or both sides are provided with is easy to the groove of clamping or protruding composition；Described grab
The movable matching mechanism of drot gfasplng is made up of with lower soleplate upper surface vertebral pulp lower surface；Make the described vertebral pulp can be at lower soleplate upper surface
Direction, front, rear, left and right realizes moving and around central axis, and is difficult to abjection；Described lower soleplate by upper and lower surface level or
Plate body, plate body upper surface with an inclination angle are provided with some limit stop posts, described some limit stop posts and are divided into by plate body for marrow
The cross recess of corpus medullae cross dog embedding of core, the arc convex of plate body lower surface protuberance, plate body lower surface are symmetrically or non-symmetrically
Pawl, plate body front end or the both sides of distribution are provided with is easy to the groove of clamping or protruding composition；Described vertebral pulp is by the marrow of cross dog
Body, plane, corpus medullae upper surface protuberance and the upper soleplate lower surface spherical groove phase that corpus medullae lower surface is fitted with lower soleplate upper surface
The sphere dome composition coordinated；The surface that the surface that described upper soleplate contacts with vertebra, lower soleplate contact with vertebra is equipped with arc
Shape is protruding, and described arc convex is the integral curved projection of whole endplate surface, or the local arc of soleplate portion is convex
Rise；Described arc convex is the projection of rule, or is irregular projection, as there is part plan different radian combinations or top,
To guarantee that the external shape of soleplate matches with vertebral body concave shaped anatomical surface, inner matter contacts tightr with osseous tissue；Described vertebral pulp
The way of contact with some limit stop posts of described lower soleplate upper surface be face contact, the one of linear contact lay；The shape of described pawl
Shape is the one of wedge shape, cone, triangular pyramid type；Described limit stop post be column, described column outer surface for not advise
Then shape, the end shape of described limit stop post is the spherical shape that flat shape, inclined plane shape are concentric with vertebral pulp sphere top
One；Limit stop post height, equal to or less than the height with vertebral pulp contact site, produces dry with upper soleplate when preventing from rotating
Relate to.
Compared with prior art, beneficial effects of the present invention:
On the most described cervical intervertebral disk prosthesis, soleplate upper surface can be provided with arc convex, lower soleplate lower surface also can be provided with arc
Projection, this configuration design makes the arcuation micro-pits of soleplate and the arcuate recess of upper vertebral body lower edge, lower soleplate and hypocentrum upper limb
Dissection profile matches so that inner matter can increase contact area with osseous tissue close contact, improves implant surgery success rate.
Under the most described cervical intervertebral disk prosthesis, soleplate upper surface is provided with some limit stop posts, vertebral pulp shape movable with " cross dog "
Become grasping type movably coordinate, it is ensured that vertebral pulp realize on lower soleplate upper surface around a range of movement in direction and around
The a range of rotation of central shaft, with the most mobile of limit vertebral pulp and rotation, prevents vertebral pulp from deviating under excess pressure.
The most described cervical intervertebral disk prosthesis vertebral pulp forms ball-and-socket joint with upper soleplate, forms grasping type with lower soleplate and movably joins
Close, take half restricted type motion mode, remain the instantaneou axis of rotation, be provided that instantaneous variable center of rotation, meet human body marrow
The instantaneous variable virtual condition of core center of rotation, it is achieved the physiological activity degree that treatment sections is more natural is normal after meeting operation in patients
Cervical vertebra motor function.
Accompanying drawing explanation
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of cervical intervertebral disk prosthesis of the present invention.
Fig. 2 is the assembling structural representation of cervical intervertebral disk prosthesis of the present invention.
Fig. 3 is the sectional view of cervical intervertebral disk prosthesis of the present invention.
Fig. 4 is the perspective view of cervical intervertebral disk prosthesis of the present invention.
Primary clustering symbol description:
Upper soleplate 1, plate body 11, arc convex 12, pawl 13, clamp groove 14, spherical groove 15, vertebral pulp 2, sphere dome
21, laminating plane 22, lower soleplate 3, plate body 31, limit stop post 32, clamp groove 33, pawl 34, arc convex 35.
Detailed description of the invention
The present invention is further detailed in conjunction with the accompanying drawings below:
Refer to shown in Fig. 1, Fig. 2, described cervical artificial disc prosthese, it is made up of upper soleplate 1, vertebral pulp 2 and lower soleplate 3,
Upper soleplate 1 lower surface and vertebral pulp 2 upper surface constitute ball-and-socket joint, and vertebral pulp 2 lower surface is fitted with lower soleplate 3 upper surface, and relied on
Lower soleplate 3 surface texture realizes a range of activity, forms the movable matching mechanism of grasping type with lower soleplate 3.
Referring to shown in Fig. 1, Fig. 2, described ball-and-socket joint is by upper soleplate 1 lower surface spherical groove 15 and vertebral pulp 2 sphere vault
Top 21 composition, make described upper soleplate 1 relative to described vertebral pulp 2 can realize anteflexion/after stretch, left/right lateral bending, left/right rotate six
The free motion in individual direction；The movable matching mechanism of described grasping type is made up of with lower soleplate 3 surface structure vertebral pulp 2, makes described
Vertebral pulp 2 can realize a range of movement and around the certain model of central shaft at lower soleplate 3 upper surface in direction, front, rear, left and right
Enclose interior rotation, and be difficult to abjection.
Referring to shown in Fig. 2, Fig. 3, described upper soleplate 1 is by upper and lower surface level or with the plate body 11 at an inclination angle, plate
The arc convex 12 of spherical groove 15 that body 11 lower surface upwards caves in, plate body 11 upper surface protuberance, plate body 11 upper surface are symmetrical
Or mal-distribution and shape include but not limited to pawl 13, plate body 11 front end or the both sides of wedge shape, cone, triangular pyramid type etc.
It is easy to the groove 14 of clamping or protruding composition.
Referring to shown in Fig. 1, Fig. 2, described vertebral pulp 2 is by the corpus medullae of cross dog, corpus medullae lower surface and lower soleplate upper surface
The sphere dome 21 that the plane 22 of laminating, corpus medullae upper surface protuberance matches with upper soleplate lower surface spherical groove forms.
Referring to shown in Fig. 2, Fig. 3, described lower soleplate 3 is by upper and lower surface level or with the plate body 31 at an inclination angle, plate body
31 upper surfaces are provided with some limit stop posts 32, plate body 31 is divided into the corpus medullae cross for vertebral pulp convex by described some limit stop posts 32
The cross recess of pawl embedding, the arc convex 35 of plate body 31 lower surface, plate body 31 lower surface are symmetrically or non-symmetrically distributed and shape bag
Include but be not limited to pawl 34, plate body 31 front end or the both sides of wedge shape, cone, triangular pyramid type etc. and be easy to the groove 33 or convex of clamping
Play composition.Described limit stop post 32 be column, the outer surface of described column be irregularly shaped.
Referring to shown in Fig. 1, Fig. 2, Fig. 3, surface, lower soleplate 3 that described upper soleplate 1 contacts with vertebra contact with vertebra
Surface is equipped with arc convex 12, arc convex 35, the overall arc that described arc is convex 12, arc convex 35 is whole endplate surface
Shape is protruding, or soleplate portion such as middle local arc convex；Described arc convex is the projection of rule, or for not advise
Projection then, as there is part plan different radian combinations or top, to guarantee upper soleplate 1, lower soleplate 3 profile and vertebral body concave shaped
Anatomical surface matches, and inner matter contacts tightr with osseous tissue.
Referring to shown in Fig. 1, Fig. 2, described lower soleplate 3 upper surface projection is supplied described corpus medullae by some limit stop post 32 molding
The cross recess that cross dog embeds, some limit stop posts 32 are one-body molded with lower soleplate 3, and described vertebral pulp is permissible with described lower soleplate
It is plane contact, it is also possible to be cambered surface contact or linear contact lay, constitute half restricted type forms of motion, it is ensured that vertebral pulp 2 is on lower soleplate 3
The a range of movement in direction and around a range of rotation of central shaft around realizing on surface, with limit vertebral pulp 2
Excessively mobile and rotate, prevent vertebral pulp 2 from deviating under excess pressure；Limit stop post 32 can be regular or irregularly shaped several
He Ti, end shape includes but not limited to the spherical shape etc. that flat shape, inclined plane shape are concentric with vertebral pulp 2 sphere top；Limit
Position bumping post 32 height, equal to or less than the height with vertebral pulp 2 contact site, produces with upper soleplate when preventing from rotating and interferes.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the invention as claimed with
Modify, all should belong to the covering scope of the claims in the present invention.
Claims (10)
1. a cervical artificial disc prosthese, including upper soleplate, vertebral pulp and lower soleplate, it is characterised in that described upper soleplate following table
Face and described vertebral pulp upper surface form ball-and-socket joint, described vertebral pulp lower surface and the laminating of described lower soleplate upper surface and with lower soleplate
Form the movable matching mechanism of grasping type.
Cervical artificial disc prosthese the most according to claim 1, it is characterised in that described ball-and-socket joint is by upper soleplate lower surface
The sphere dome that the spherical groove of molding and vertebral pulp upper surface protrude is constituted, before making described upper soleplate realize relative to described vertebral pulp
Bend/after stretch, left/right lateral bending, left/right rotate six direction free motion.
Cervical artificial disc prosthese the most according to claim 2, it is characterised in that described upper soleplate is by upper and lower surface level
Or with an inclination angle plate body, plate body lower surface depression the spherical groove of molding, plate body upper surface protuberance arc convex, plate body
The pawl that upper surface is symmetrically or non-symmetrically distributed, plate body front end or both sides are provided with is easy to the groove of clamping or protruding composition.
Cervical artificial disc prosthese the most according to claim 1, it is characterised in that the movable matching mechanism of described grasping type is by marrow
Core lower surface is constituted with lower soleplate upper surface；Make described vertebral pulp can realize in direction, front, rear, left and right at lower soleplate upper surface
Move and around central axis, and be difficult to abjection.
Cervical artificial disc prosthese the most according to claim 4, it is characterised in that described lower soleplate is by upper and lower surface level
Or be provided with some limit stop posts with plate body, the plate body upper surface at an inclination angle, plate body is divided into confession by described some limit stop posts
The cross recess of corpus medullae cross dog embedding of vertebral pulp, the arc convex of plate body lower surface protuberance, plate body lower surface are symmetrical or the most right
Pawl, plate body front end or the both sides claiming distribution are provided with is easy to the groove of clamping or protruding composition.
6. according to cervical artificial disc prosthese described in claim 2 or 4, it is characterised in that described vertebral pulp is by the marrow of cross dog
Body, plane, corpus medullae upper surface protuberance and the upper soleplate lower surface spherical groove phase that corpus medullae lower surface is fitted with lower soleplate upper surface
The sphere dome composition coordinated.
7. according to cervical artificial disc prosthese described in claim 3 or 5, it is characterised in that described upper soleplate contacts with vertebra
The surface that surface, lower soleplate contact with vertebra is equipped with arc convex, and described arc convex is the overall arc of whole endplate surface
Shape is protruding, or the local arc convex of soleplate portion；Described arc convex is the projection of rule, or is irregular convex
Rise, as there is part plan different radian combinations or top, to guarantee that the external shape of soleplate matches with vertebral body concave shaped anatomical surface,
Inner matter contacts tightr with osseous tissue.
Cervical artificial disc prosthese the most according to claim 6, it is characterised in that described vertebral pulp and described lower soleplate upper surface
The way of contact of some limit stop posts be face contact, the one of linear contact lay..
Cervical artificial disc prosthese the most according to claim 5, it is characterised in that described limit stop post is column, described
The outer surface of column is irregularly shaped, and the end shape of described limit stop post is flat shape, inclined plane shape and vertebral pulp ball
The one of the spherical shape that top, face is concentric；Limit stop post height, equal to or less than the height with vertebral pulp contact site, prevents
Produce with upper soleplate during rotation and interfere.
10. a cervical artificial disc prosthese, including upper soleplate, vertebral pulp and lower soleplate, it is characterised in that described upper soleplate following table
Face and described vertebral pulp upper surface form ball-and-socket joint, described vertebral pulp lower surface and the laminating of described lower soleplate upper surface and with lower soleplate
Form the movable matching mechanism of grasping type；Described ball-and-socket joint is convex with vertebral pulp upper surface by the spherical groove of upper soleplate lower surface molding
The sphere dome that goes out is constituted, make described upper soleplate relative to described vertebral pulp realize anteflexion/after stretch, left/right lateral bending, left/right rotate
The free motion of six direction；Described upper soleplate plate body, plate body lower surface by upper and lower surface level or with an inclination angle caves in
The pawl that the arc convex of the spherical groove of molding, plate body upper surface protuberance, plate body upper surface are symmetrically or non-symmetrically distributed, plate body
Front end or both sides are provided with is easy to the groove of clamping or protruding composition；The movable matching mechanism of described grasping type by vertebral pulp lower surface with under
Soleplate upper surface is constituted；Make described vertebral pulp can realize in direction, front, rear, left and right moving and around center at lower soleplate upper surface
Axle rotates, and is difficult to abjection；Described lower soleplate plate body, plate body upper surface by upper and lower surface level or with an inclination angle is provided with
Plate body is divided into the cross recess of corpus medullae cross dog embedding for vertebral pulp, plate by some limit stop posts, described some limit stop posts
Pawl, plate body front end or both sides that the arc convex of body lower surface protuberance, plate body lower surface are symmetrically or non-symmetrically distributed are provided with just
Groove or protruding composition in clamping；Described vertebral pulp is fitted with lower soleplate upper surface by the corpus medullae of cross dog, corpus medullae lower surface
Plane, the corpus medullae upper surface sphere dome that matches with upper soleplate lower surface spherical groove of protuberance forms；Described upper soleplate with
The surface that the surface of vertebra contact, lower soleplate contact with vertebra is equipped with arc convex, and described arc convex is whole soleplate table
The integral curved projection in face, or the local arc convex of soleplate portion；Described arc convex is the projection of rule, or is
Irregular projection, as there is part plan different radian combinations or top, to guarantee that the external shape of soleplate is dissected with vertebral body concave shaped
Surface matches, and inner matter contacts tightr with osseous tissue；Described vertebral pulp and some limit stop posts of described lower soleplate upper surface
The way of contact be face contact, the one of linear contact lay；The one being shaped as wedge shape, cone, triangular pyramid type of described pawl；Institute
State limit stop post be column, the outer surface of described column be irregularly shaped, the end shape of described limit stop post is flat
The one of the spherical shape that face shape, inclined plane shape are concentric with vertebral pulp sphere top；Limit stop post height equal to or less than with
The height of vertebral pulp contact site, produces with upper soleplate when preventing from rotating and interferes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610873632.8A CN106236334A (en) | 2016-09-30 | 2016-09-30 | Artificial cervical intervertebral disk prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610873632.8A CN106236334A (en) | 2016-09-30 | 2016-09-30 | Artificial cervical intervertebral disk prosthesis |
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| CN106236334A true CN106236334A (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610873632.8A Pending CN106236334A (en) | 2016-09-30 | 2016-09-30 | Artificial cervical intervertebral disk prosthesis |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618811A (en) * | 2017-02-22 | 2017-05-10 | 无锡宝莱福医疗器械有限公司 | Functional bionic artificial cervical disc |
| CN107049563A (en) * | 2017-04-19 | 2017-08-18 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disk prosthesis |
| CN108095863A (en) * | 2018-01-20 | 2018-06-01 | 西安市红会医院 | A kind of 3D printing cervical artificial disc prosthese |
| 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 |
| CN109157312A (en) * | 2018-10-23 | 2019-01-08 | 福州大学 | A kind of artificial lumbar intervertebral disc structure and its working method based on metal-rubber |
| CN111938880A (en) * | 2020-08-18 | 2020-11-17 | 四川大学华西医院 | Artificial cervical intervertebral disc device and cover film suitable for same |
Citations (6)
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| 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 |
| CN109157312A (en) * | 2018-10-23 | 2019-01-08 | 福州大学 | A kind of artificial lumbar intervertebral disc structure and its working method based on metal-rubber |
| CN109157312B (en) * | 2018-10-23 | 2023-09-12 | 福州大学 | Lumbar intervertebral disc prosthesis structure based on metal rubber and working method thereof |
| CN111938880A (en) * | 2020-08-18 | 2020-11-17 | 四川大学华西医院 | Artificial cervical intervertebral disc device and cover film suitable for same |
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