CN209316158U - A kind of bionical intervertebral disk prosthesis - Google Patents
A kind of bionical intervertebral disk prosthesis Download PDFInfo
- Publication number
- CN209316158U CN209316158U CN201821279282.3U CN201821279282U CN209316158U CN 209316158 U CN209316158 U CN 209316158U CN 201821279282 U CN201821279282 U CN 201821279282U CN 209316158 U CN209316158 U CN 209316158U
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- Prior art keywords
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- bionical
- fixed
- plate
- metal drag
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000000806 elastomer Substances 0.000 claims abstract description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 20
- 239000010936 titanium Substances 0.000 claims description 20
- 229910052719 titanium Inorganic materials 0.000 claims description 20
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Abstract
The utility model relates to a kind of bionical intervertebral disk prosthesis, which is characterized in that the disk spring group that the elastomer is located in it by bellows and coaxially forms；Two groups of metal drag-lines are symmetrically distributed with linear state in the centre bore of the disk spring group, each group of metal drag-line is at least three；The via hole equal with one group of metal drag-line quantity is respectively symmetrically distributed in axis on the top board and lower platen around the bellows；Two groups of metal drag-lines, one group of following is fixed on lower platen, top sequentially passes through corresponding via hole on the centre bore and top board of the butterfly spring group and is fixed on the top plate, another group of top is fixed on top board, and following sequentially passes through corresponding via hole on the centre bore and lower platen of the butterfly spring group and is fixed on the bottom plate.This bionical intervertebral disk prosthesis all has buffer function under compression, stretching even rotation and curved load, and stability is good, bionical excellent result.
Description
Technical field
The utility model relates to can be transplanted to intracorporal prosthese, and in particular to the artificial prosthesis for spinal disc.
Background technique
Backbone is made of vertebrae and interverbebral disc, is a kind of quite soft movable structure of energy again.The activity of backbone is depended on
In the complete of interverbebral disc, the harmony being related between vertebrae articular process.Interverbebral disc has the characteristics that viscoplasticity, and human body fortune can be absorbed
It is dynamic, alleviate shock loading and brings damage to the human body.Backbone regression or wound are likely to result in the funeral of vertebra osteoarticular function
It loses, therefore generallys use spinal disc displacement clinically to carry out repairing and treating.
The application for a patent for invention of Publication No. CN 1925815A discloses a kind of " modular intervertebral disk prosthesis ", the vertebra
Between disc prosthesis one central part clamped by upper and lower two pieces of agproximation plates constitute, wherein the central part includes bellows, the bellows
Both ends are equipped with soleplate, and inside is equipped with butterfly spring group and helical spring, and the helical spring is located at the center of butterfly spring group
In hole, both ends are acted on the soleplate；The spring characteristic curve f of the central part has in the first subregion in 450N/mm
Spring rate between 550N/mm, and there is the spring rate between 1400N/mm and 1600N/mm in the second subregion.
According to the description of the patent application specification, central part of the spring rate between 450N/mm and 550N/mm is suitable for 40-
The load of the patient of 65kg weight, the central part between 1400N/mm and 1600N/mm are suitable for the negative of the patient of 60-100kg weight
It carries.Description prompt, doctor will select the spring rate of the central part according to the patient weight load carried.But
The widely dispersed of patient body weight, it is only tens kilograms light, and weight then has one two hundred kilograms, and the intervertebral of different location
The load great disparity that disk is undertaken is very big, as long as such as cervical intervertebral disk carrier head weight, and lumber ertebral disc will carry on entire
The weight of body.Therefore the scheme of above-mentioned patent application, will select to design the central part spring rate according to specific case
Big difficulty is foreseeable.If the spring rate of the central part is excessive, it is clear that buffer function is not had, if in described
The spring rate of heart part is too small, and stability can cause the clinical responses such as dizziness with regard to poor.In addition, the scheme of above-mentioned patent application is also
There are buffer function, let alone what stability are not just had when tension (such as when pitching by bus) at all, because
Butterfly spring group described in when stretching does not work.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of bionical intervertebral disk prosthesis, the bionical intervertebral disk prosthesis
All there is buffer function under compression, stretching even rotation and curved load, and stability is good, bionical excellent result.
The technical solution that the utility model solves above-mentioned technical problem is:
A kind of bionical intervertebral disk prosthesis, the bionical intervertebral disk prosthesis include the top plate being sequentially coaxially arranged from top to bottom, bullet
Property body and bottom plate, which is characterized in that
The center of top plate lower surface and the center of plate upper surface is respectively equipped with a discoid protrusion；The top
The edge of plate upper surface and lower surface of base plate the same side is respectively symmetrically set there are two lug, is respectively equipped with spherical surface on each lug
Hole；
The disk spring group that the elastomer is located in it by bellows and coaxially forms, wherein the bellows
It is made of nonbiodegradable medical macromolecular materials, both ends are respectively equipped with the connection to match with the discoid protrusion
Mouthful, the disk spring group is made of one group of disk spring overlapping；
The both ends of disk spring group are respectively equipped with top board and lower platen in the bellows, set by the top plate lower surface
Protrusion puts in bellows one connector and acts on top board, and it is another that protrusion set by the plate upper surface puts in bellows
One connector simultaneously acts on lower platen；Two groups are symmetrically distributed in the centre bore of the disk spring group with linear state
Metal drag-line, each group of metal drag-line are at least three；Distinguish on the top board and lower platen around the axis of the bellows
It is symmetrically distributed with the via hole equal with one group of metal drag-line quantity；Two groups of metal drag-lines, one group of following are fixed on down
On pressing plate, top sequentially passes through corresponding via hole on the centre bore and top board of the butterfly spring group and is fixed on the top plate
On, another group of top is fixed on top board, and following sequentially passes through phase on the centre bore and lower platen of the butterfly spring group
The via hole answered is fixed on the bottom plate；
Be tensioned two groups of metal drag-lines, make on the top plate on set protrusion root and bottom plate between set raised root away from
From equal to the length that the elastomer is compressed to default initial stiffness.
In order to accurately preset the initial stiffness of the elastomer, one improvement project of the utility model is, described
Top plate and bottom plate on be respectively equipped with the quantity upper and lower perforative counterbore equal with one group of metal drag-line radical；Two groups of gold
Belong to drag-line, one group of top is equipped with nipple and is fixed by nuts on the top plate respectively in corresponding counterbore, another
The following of group is equipped with nipple and is fixed by nuts on the bottom plate respectively in corresponding counterbore.
In order to make prosthese and adjacent vertebra preferably realizes bone fusion, in the cover top surface and lower surface of base plate
Be distributed with several rise it is prominent.
In above scheme, the nonbiodegradable medical macromolecular materials can be the poly- ammonia of polyurethane, polycarbonate
Ester or polyether-polyurethane, preferably polyurethane.
In above scheme, the metal drag-line is medical titanium cable.
Bionical intervertebral disk prosthesis described in the utility model has the advantages that:
(1) dexterously to be selected the technical problem for designing the elastomer rigidity simple according to specific case the prior art
The length for presetting the metal drag-line is turned to, so that position carries out phase to the weight and interverbebral disc according to patient in human vertebrae
To accurately presetting, the adaptation range of the intervertebral disk prosthesis of same specification has been expanded significantly.
(2) when resilience of the dynamic loading of human motion greater than initial stiffness set by the bionical intervertebral disk prosthesis,
Bidirectional elastic deformation, therefore the bionical intervertebral disk prosthesis is in the case where compression and tension load (such as when pitching by bus) acts on
All have good stability.
(3) it is only connected and fixed, be may be not present other by two groups of metal drag-lines between top plate and bottom plate and elastomer
Rigid fixation structure, while the bellows is made of nonbiodegradable medical macromolecular materials, therefore entire interverbebral disc
Prosthese not only can be axially stretched or compress, but also can rotate or be bent microly, and bionical effect is obviously improved.
(4) top plate and bottom plate are both provided with two earholes, can by the top plate of prosthese and bottom plate and adjacent vertebra stitching,
Preventing prosthese, dystopy causes secondary injury after surgery.
Detailed description of the invention
Fig. 1~7 are the structural schematic diagram of bionical one specific embodiment of intervertebral disk prosthesis described in the utility model, wherein
Fig. 1 is main view (semi-cutaway), and Fig. 2 is top view (the lug partial cutaway on right side), and Fig. 3 is bottom view (the lug part on right side
Cut open), Fig. 4 is the A-A cross-sectional view (medical titanium cable is omitted) of Fig. 1, and Fig. 5 is the B-B cross-sectional view (medical titanium cable is omitted) of Fig. 1,
Fig. 6 is the partial enlarged view of the I in Fig. 1, and Fig. 7 is the II partial enlarged view in Fig. 1.
Fig. 8 is the usage state diagram of bionical intervertebral disk prosthesis shown in Fig. 1~7.
Fig. 9 is the comparison diagram of bionical intervertebral disk prosthesis compression and tension state shown in Fig. 1~7, wherein left figure is compression shape
State, right figure are tension state.
Specific embodiment
Referring to Fig. 1~7, the bionical intervertebral disk prosthesis in this example include the top plate 1 being arranged from top to bottom along same axis 9,
Elastomer and bottom plate 2.
Referring to Fig. 1 and Fig. 2, the upper surface of top plate 1 is the curved surface similar with human vertebrae planform to arch upward upwards, should
Several are distributed on curved surface and plays prominent 12, edge is symmetrically arranged with two lugs 8, is respectively equipped with sphere hole 11 on each lug 8；
The lower surface center of the top plate 1 is equipped with one discoid raised 18；About four are symmetrically arranged with around axis 9 on the top plate 1 to pass through
The counterbore 13 worn, and four counterbores 13 are distributed on the circumference that radius is R.
Referring to Fig. 1~3, bottom plate 2 in addition to the distributing position of four counterbores 13 is different, other structures feature with 1 mirror of top plate
As symmetrical.Four 13 distributing positions of counterbore are staggered 45° angle around axis 9 on four 13 distributing positions of counterbore and top plate 1 on bottom plate 2.
Referring to Fig. 1 and Fig. 4~5, the butterfly spring group 5 that the elastomer is located in it by bellows 7 and coaxially is formed,
Wherein, bellows 7 is made of nonbiodegradable polyurethane, and both ends are respectively equipped with connector, the connector respectively with top plate 1
Discoid convex 18 match set by discoid raised 18,2 upper surface of bottom plate set by lower surface；Disk spring group 5 is by four
Piece disk spring overlapping composition.
Referring to Fig. 1 and Fig. 4~5, the both ends of disk spring group 5 are respectively equipped with top board 3 and lower platen 4 in bellows 7, top
Protrusion 18 set by 1 lower surface of plate puts in the connector of 7 top of bellows and acts on top board 3, convex set by 4 upper surface of bottom plate
18 are played to put in the connector of 7 following of bellows and act on lower platen 4；With linear state in the centre bore of disk spring group 5
Two groups of medical titanium cables 6 are symmetrically distributed with, each group of medical titanium cable 6 is four.
Referring to Fig. 1 and Fig. 4~5, on top board 3 and lower platen 4, centered on axis 9, R be on the circumference of radius respectively
Symmetrical to be staggeredly equipped with 4 via hole 14 and 4 screw holes 15, central angle is 45 degree between the screw hole 15 and adjacent via hole 14.Upper pressure
Four via holes 14 on plate 3 are coaxially disposed with four counterbores 13 on top plate 1 respectively, four via holes 14 difference on lower platen 8
It is coaxially disposed with four counterbores 13 on bottom plate 2.
Referring to Fig. 1 and Fig. 5~7, the both ends of medical titanium cable 6 are equipped with nipple 10, the nipple 10 be use with
What lower method was processed into: the titanium silk at 6 both ends of medical titanium cable is heated to the simultaneously jumping-up that is consolidated, is ground to cylinder after cooling,
Then nipple 10 is processed.
Referring to Fig. 1~5, protrusion 18 set by 2 upper surface of protrusion 18 set by 1 lower surface of top plate and bottom plate is embedded respectively and hot sulphur
Change is fixed in the connector at 7 both ends of bellows；In two groups of medical titanium cables 6, the following of one group of medical titanium cable 6 is fixed on lower platen
In 4 screw hole 15, top is sequentially passed through on the centre bore and top board 3 of butterfly spring group 5 after corresponding via hole 14 by nut 19
It being fixed in counterbore 13 set on top plate 1, the top of another group of medical titanium cable 6 is fixed in the screw hole 15 on top board 3, under
Head sequentially passes through and fixes institute on a base plate 2 by nut 19 after corresponding via hole 14 on the centre bore and lower platen 4 of butterfly spring group 5
If counterbore 13 in.
Referring to Fig. 1~7, the overall structure and its assembly method of bionical intervertebral disk prosthesis described in this example are as described below:
(1) 46 one, medical titanium cable nipples 10 are spirally connected in the screw hole 15 that simultaneously solid welding is set on top board 3,
In the screw hole 15 that remaining 6 one, 4 medical titanium cables nipples 10 are spirally connected and solid welding is set on lower platen 4；
(2) butterfly spring group 5 is placed in bellows 7, then by top board 3 and lower platen 4 respectively by 7 liang of bellows
End is put into, and be fixed on top board 3 four medical titanium cables 6 is made to pass through corresponding via hole 14 on lower platen 4 respectively, fixed
Four medical titanium cables 6 on lower platen 4 pass through corresponding via hole 14 on top board 3 respectively, then in each medical titanium cable 6
Weld the wire of a traction technique in the end face of other end；
(3) by top plate 1 and bottom plate 2 both ends staggered relatively in bellows 7 and discoid raised 18 are made to be respectively embedded into wave
The connector at 7 both ends of line pipe, and two lugs 8 is made on top plate 1 to be located at the same side with two lugs 8 on bottom plate 2, it then will be each
Simultaneously medical titanium cable 6 is straightened in counterbore 13 that the wire of traction technique is pierced by respectively on top plate 1 and bottom plate 2；
(4) top plate 1 and bottom plate 2 are put on a fixture together with bellows 7 between the two and are forced into medical titanium cable 6
On nipple 10 stretch out top plate 1 and bottom plate 2, then remove the wire of the traction technique, and connect in each screw thread
A nut 19 is arranged on first 10；Then,
(5) gradually loosen the fixture, when set raised 18 root on raised 18 root set on top plate 1 and bottom plate 2
The distance between portion is equal to when the elastomer is compressed to the length of default initial stiffness, tightens nut 19 and puts and is welded, and
The connector at 7 both ends of bellows is fixed on discoid raised 18 on top plate 1 and bottom plate 2 respectively using the method for heat cure
Together.
Referring to Fig. 8 and Fig. 1, the method for implantation of bionical intervertebral disk prosthesis described in the utility model is as described below: will assemble
Bionical intervertebral disk prosthesis 17 be placed between adjacent two vertebra 16, and make on top plate 1 two lugs 8 and two lugs 8 on bottom plate 2
Positioned at the front side of vertebrae, then bionical intervertebral disk prosthesis 17 is fixed on through the sphere hole 11 on lug 8 with ball screw 20
On adjacent vertebra 16.
Referring to Fig. 9 and Fig. 1 and 8 is combined, the bullet under the quiet effect of patient's weight, in the bionical intervertebral disk prosthesis 17
Property body is indeformable, once under the influence of certain factor (such as when pitching by bus), bionical 17 top of intervertebral disk prosthesis
When human body moves up and down, the bionical intervertebral disk prosthesis 17 is just alternately tension or in compression.When the bionical intervertebral disk prosthesis
When 17 compression, pressure is transmitted on the elastomer by top plate 1 and bottom plate 2, the bellows 7 in elastomer and butterfly spring group
5 generate flexible deformation by compression simultaneously；When bionical 17 tension of intervertebral disk prosthesis, which drives top plate 1 and bottom
Plate 2 moves backward, and generated displacement is transmitted on top board 3 and lower platen 4 through two groups of medical titanium cables 6, forces 3 He of top board
Lower platen 4 relatively moves and compresses butterfly spring group 5 and generate flexible deformation, while bellows 7 is in the reversed of top plate 1 and bottom plate 2
It is directly stretched in moving process and generates flexible deformation.
Claims (5)
1. a kind of bionical intervertebral disk prosthesis, which includes the top plate being sequentially coaxially arranged from top to bottom, elasticity
Body and bottom plate, which is characterized in that
The center of top plate lower surface and the center of plate upper surface is respectively equipped with a discoid protrusion；On the top plate
The edge of surface and lower surface of base plate the same side is respectively symmetrically set there are two lug, is respectively equipped with sphere hole on each lug；
The butterfly spring group that the elastomer is located in it by bellows and coaxially forms, wherein the bellows is by non-
Biodegradable medical macromolecular materials are made, and both ends are respectively equipped with the connector to match with the discoid protrusion, institute
The butterfly spring group stated is made of one group of butterfly spring overlapping；
The both ends of the butterfly spring group are respectively equipped with top board and lower platen, and protrusion set by the top plate lower surface puts in wave
The connector of line Guan Yitou simultaneously acts on top board, and protrusion set by the plate upper surface puts in the connection of bellows other end
Mouth simultaneously acts on lower platen；Two groups of metal drag-lines are symmetrically distributed with linear state in the centre bore of the butterfly spring group,
Each group of metal drag-line is at least three；Axis on the top board and lower platen around the bellows is respectively symmetrically distributed with
The via hole equal with one group of metal drag-line quantity；Two groups of metal drag-lines, one group of following are fixed on lower platen, top
It sequentially passes through corresponding via hole on the centre bore and top board of the butterfly spring group to be fixed on the top plate, another group upper
Head is fixed on top board, and following sequentially passes through corresponding via hole on the centre bore and lower platen of the butterfly spring group and is fixed on
On the bottom plate；
Two groups of metal drag-lines are tensioned, the distance between set protrusion root and raised root set on bottom plate etc. on the top plate are made
In the length that the elastomer is compressed to default initial stiffness.
2. a kind of bionical intervertebral disk prosthesis according to claim 1, which is characterized in that on the top plate and bottom plate respectively
Equipped with the quantity upper and lower perforative counterbore equal with one group of metal drag-line radical；Two groups of metal drag-lines, one group of top
It is equipped with nipple and is fixed by nuts on the top plate respectively in corresponding counterbore, another group of following is equipped with screw thread
Connector is simultaneously fixed by nuts on the bottom plate in corresponding counterbore respectively.
3. a kind of bionical intervertebral disk prosthesis according to claim 1 or 2, which is characterized in that the cover top surface and
Be distributed in lower surface of base plate several rise it is prominent.
4. a kind of bionical intervertebral disk prosthesis according to claim 1 or 2, which is characterized in that described is nonbiodegradable
Medical macromolecular materials are polyurethane.
5. a kind of bionical intervertebral disk prosthesis according to claim 1 or 2, which is characterized in that the metal drag-line is doctor
With titanium cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821279282.3U CN209316158U (en) | 2018-08-09 | 2018-08-09 | A kind of bionical intervertebral disk prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821279282.3U CN209316158U (en) | 2018-08-09 | 2018-08-09 | A kind of bionical intervertebral disk prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209316158U true CN209316158U (en) | 2019-08-30 |
Family
ID=67705867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821279282.3U Withdrawn - After Issue CN209316158U (en) | 2018-08-09 | 2018-08-09 | A kind of bionical intervertebral disk prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209316158U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108938152A (en) * | 2018-08-09 | 2018-12-07 | 深圳市龙岗区人民医院 | A kind of bionical intervertebral disk prosthesis |
| CN108938152B (en) * | 2018-08-09 | 2024-05-14 | 深圳市龙岗区人民医院 | Bionic intervertebral disc prosthesis |
-
2018
- 2018-08-09 CN CN201821279282.3U patent/CN209316158U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108938152A (en) * | 2018-08-09 | 2018-12-07 | 深圳市龙岗区人民医院 | A kind of bionical intervertebral disk prosthesis |
| CN108938152B (en) * | 2018-08-09 | 2024-05-14 | 深圳市龙岗区人民医院 | Bionic intervertebral disc prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190830 Effective date of abandoning: 20240514 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190830 Effective date of abandoning: 20240514 |