CN2333369Y - Artificial lumbar intervertebral disc - Google Patents
Artificial lumbar intervertebral disc Download PDFInfo
- Publication number
- CN2333369Y CN2333369Y CN98234325U CN98234325U CN2333369Y CN 2333369 Y CN2333369 Y CN 2333369Y CN 98234325 U CN98234325 U CN 98234325U CN 98234325 U CN98234325 U CN 98234325U CN 2333369 Y CN2333369 Y CN 2333369Y
- Authority
- CN
- China
- Prior art keywords
- cover plate
- nuclear
- artificial lumbar
- degree
- lumbar disc
- 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.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 5
- 230000002045 lasting effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 208000018650 Intervertebral disc disease Diseases 0.000 description 1
- 206010050296 Intervertebral disc protrusion Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000002271 resection Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Images
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
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The utility model relates to an artificial lumbar intervertebral disc, which consists of an upper cover plate (3), a lower cover plate (3) and a middle sliding core (5), and is fixed with upper and lower vertebrae through a protruded tooth (1) on the cover plate, and is characterized in that a cutting edge (2) is added on the back of the protruded tooth (1), the upper surface of the cover plate (3) is provided with a rough layer, the depth of a concave groove flange of the cover plate is deepened, the top of the core flange is enlarged to be 0.64mm, and the maximum inclination angle of a combination body is 12-14 degrees. The utility model has the advantages that the mobility of the prosthesis is moderate, the sliding core is limited to be separated, the cover plate can grow into the bone surface mutually, and the stability is lasting.
Description
This utility model relates to a kind of artificial lumbar disc.
Human intervertebral disc is a kind of viscoelasticity tissue, is connecting and is going up hypocentrum, and the effect of stabilizing spine, absorption concussion, transmitted load, distributed stress is not only arranged, and the activity of spinal column is had conclusive effect.Unfortunately, the intervertebral disc disorder due to a variety of causes can make the integrity of intervertebral disc be damaged, and clinical common intervertebral disc prolapse need be gone discectomy or resection of nucleus pulposus again.So how to rebuild its function behind the lumbar discectomy, be a difficult problem of orthopedics circle.Subject matter during at present external only SB Charite artificial lumbar disc uses is: (1) prosthese mobility is excessive and stable not enough; (2) phenomenon that has the nuclear that slides to deviate from; (3) metal cover board lacks surface treatment, thereby not good enough with growing into mutually of bone surface.
The purpose of this utility model is to provide that a kind of prosthese mobility is moderate, limit slippage examine deviate from, can grow into and stable persistent artificial lumbar disc mutually with bone surface.
This utility model is achieved in that artificial lumbar disc, and it comprises up and down two cover plates and intermediary slip nuclear, and the nuclear periphery that slides be circular, and central authorities' recessed being pickled with grains or in wine of projection and cover plate slightly are complementary, and by lobe on the cover plate and vertebra fixation up and down.Increased at the back side of lobe and to have cut rib; The upper surface of cover plate has coarse top layer; The allowable angle of inclination of examining that slides is 12 degree～14 degree.The spacing angle of interlock of slip nuclear and cover plate is 52.6 degree.The nuclear flange top of sliding thickness is 0.64mm.The radius of examining of ball up and down that slides accurately equates.Metal cover board divides two kinds of plane and plagiohedrals, and the gradient of plagiohedral cover plate is 10 degree.
Advantage of the present utility model is: increased at the back side of lobe and cut rib, and to the coarse processing of the upper surface of cover plate, be beneficial to growing into mutually of metal cover board and bone surface, its stability increases; The increase at the spacing angle of interlock of slip nuclear and cover plate has increased inside lateral confinement power, and its probability of deviating from reduces; The ball radius equates that accurately the both sides stress balance has been eliminated the non-horizontal component that causes; Deepened the degree of depth of the recessed poor flange of cover plate, limited assembly slide nuclear mobility and stability increases; Increase the thickness of kernel flange top simultaneously, reduced the flange distortion and caused the probability that core is deviate from.
The utility model is described in further detail below in conjunction with drawings and Examples.
Figure one is a plagiohedral structural representation of the present utility model.
Artificial lumbar disc, belong to low friction slip surface design, slide by up and down two Ti Alloy Cover Plate (3) and intermediary VHD polyethylene and to examine (5) and form, polyethylene slides and examines periphery (5) is circular, central authorities' projection slightly are complementary with the recessed poor of cover plate (3), and, on the basis of SB Charite artificial lumbar disc, made the improvement of following structure by 6 lobes (1) on the cover plate and vertebra fixation up and down:
Increased at the back side of lobe (1) and to have cut rib (2), its width is about 0.3～0.5mm, is about 1～3, is beneficial to growing into of kindred and increases stability.Former SB Chariter artificial lumbar disc surface roughness is lower, be unfavorable for growing into of kindred and slip phenomenon is arranged, now to the upper surface of cover plate (3) through corundum sandblast, spraying hydroxyapatite coating or plasma spraying, make its surface have certain roughness, be beneficial to growing into mutually of metal cover board and bone surface, produce the frictional force that stops cover plate to be deviate from, increase its stability.
The spacing angle of interlock (8) of slip nuclear and cover plate adds greatly 52.6 degree from 42 degree of former SB Chariter artificial lumbar disc, less than the self-locking angle of friction, has increased inside lateral confinement power, so that anti-sliding stop is examined.Deepened the degree of depth of the recessed poor flange of cover plate (4), according to body mechanics's precision calculating the allowable angle of inclination of the intravital slip nuclear of combination (5) is changed to 12 from 19.6 degree of SB Chariter artificial lumbar disc and spend～14 degree, and changed the stable not enough problem that causes owing to the prosthese mobility is excessive; Simultaneously the thickness at kernel flange (7) top is added greatly 0.64mm from 0.5mm, also reduced flange (7) distortion and caused the probability that core is deviate from.Thereby strengthened the stability of the nuclear that slides, reduced its probability of deviating from.In addition, suitably reduced the surface smoothness of ball and the recessed poor contact surface of cover plate, so that reduce mobility.
Now adopt the slip nuclear of red excision forming cutter machine-shaping, ball radius in both sides accurately equates up and down, has eliminated the non-horizontal component that causes.The both sides ball radius of former SB Chariter is also unequal, and both sides are produced by force unbalance and make the open non-horizontal component of cover plate.Increased the recessed poor radius of ball and cover plate simultaneously, made both have bigger contact area and axial thrust load.
Periphery at the nuclear (5) that slides has X line locating ring (6), can detect the particular location of artificial lumbar disc.
Metal cover board divides two kinds of plane and plagiohedrals, and plane all is applicable to L
4.5(waist 4 and waist 5 gaps) or above gap, the plagiohedral person is applicable to L
5S
1The gap is to adapt to L
5S
1The front wide and rear narrow characteristics that intervertebral disc is bigger, its gradient are 10 degree.
Design transverse diameter of upper cover plate and radius vector deduct a standard deviation to adapt to about 75% people by the dissection average of compatriots' lumbar intervertebral disc.Design time-division 3 kinds of specifications, the artificial lumbar disc transverse diameter of large size is 36mm, radius vector is 28mm; The artificial lumbar disc transverse diameter of medium size is 32mm, and radius vector is 25mm; Small size artificial lumbar disc transverse diameter is 28mm, and radius vector is 22mm.Poly-alkene slides nuclear for circular, and central authorities' projection slightly are complementary with the recessed poor of cover plate, and thickness is respectively three kinds of 7mm, 9mm, 11mm to adapt to the intervertebral thickness of Different Individual.
Claims (5)
1. artificial lumbar disc, it comprises two cover plates (3) and intermediary slip nuclear (5) up and down, nuclear (5) periphery that slides is circular, central authorities' projection slightly are complementary with the recessed poor of cover plate (3), and, it is characterized in that: increased at the back side of lobe (1) and cut rib (2) by lobe on the cover plate (1) and vertebra fixation up and down; The upper surface of cover plate (3) has coarse top layer; The allowable angle of inclination of examining that slides is 12 degree～14 degree.
2. artificial lumbar disc according to claim 1 is characterized in that: the spacing angle of interlock (8) of slide nuclear and cover plate is 52.6 degree.
3. artificial lumbar disc according to claim 1 is characterized in that: the thickness at nuclear flange (7) top of sliding is 0.64mm.
4. artificial lumbar vertebra according to claim 1 is asked dish, it is characterized in that: the radius of ball up and down of the nuclear that slides accurately equates.
5. artificial lumbar disc according to claim 1 is characterized in that: metal cover board divides two kinds of plane and plagiohedrals, and the gradient of plagiohedral cover plate is 10 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98234325U CN2333369Y (en) | 1998-05-29 | 1998-05-29 | Artificial lumbar intervertebral disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98234325U CN2333369Y (en) | 1998-05-29 | 1998-05-29 | Artificial lumbar intervertebral disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2333369Y true CN2333369Y (en) | 1999-08-18 |
Family
ID=33982869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98234325U Expired - Fee Related CN2333369Y (en) | 1998-05-29 | 1998-05-29 | Artificial lumbar intervertebral disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2333369Y (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100396258C (en) * | 2002-12-17 | 2008-06-25 | 斯恩蒂斯有限公司 | Intervertebral implant |
| CN100401996C (en) * | 2001-05-04 | 2008-07-16 | Ldr医学公司 | Intervertebral disc prosthesis and fitting tools |
| CN100457062C (en) * | 2002-12-17 | 2009-02-04 | 斯恩蒂斯有限公司 | Intervertebral implant comprising joint parts mounted to form a universal joint |
| CN1901854B (en) * | 2003-12-10 | 2010-05-12 | 公理医学脊骨公司 | Method and apparatus for replacing a damaged spinal disc |
| CN101060818B (en) * | 2004-10-18 | 2010-07-07 | 卡林·巴特纳-扬茨 | Physiological prosthesis for vertebral disc used for cervical spondylosis and lumbar vertebra |
| CN101056598B (en) * | 2004-10-18 | 2010-07-21 | 卡林·巴特纳-扬茨 | Inner prosthesis of vertebral disc with sports adapting edge for lumbar and cervical vertebra |
| CN1698551B (en) * | 2004-05-18 | 2010-10-27 | 齐默尔有限公司 | Intervertebral disk implant object |
| CN1909856B (en) * | 2004-01-09 | 2010-12-22 | 华沙整形外科股份有限公司 | Posterior spinal device |
| US8012212B2 (en) | 2003-04-07 | 2011-09-06 | Nuvasive, Inc. | Cervical intervertebral disk prosthesis |
| CN102232880A (en) * | 2010-04-23 | 2011-11-09 | 蒋秀英 | Artificial intervertebral disk |
| CN101404957B (en) * | 2006-01-30 | 2012-06-20 | 华沙整形外科股份有限公司 | Posterior joint replacement device |
| CN101815486B (en) * | 2007-10-05 | 2012-06-27 | 樊尚·玻缇拉忒 | Intervertebral prosthesis |
| CN102670334A (en) * | 2005-07-06 | 2012-09-19 | 弗朗茨·小科弗 | Intervertebral disc prosthesis |
| CN101340863B (en) * | 2005-11-04 | 2013-04-03 | 彼得·麦克康比 | A method of reducing loading failure for a prosthetic component |
| CN103479451A (en) * | 2013-10-10 | 2014-01-01 | 北京贝思达生物技术有限公司 | Polyether-ether-ketone artificial spine intervertebral 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 |
| WO2021169746A1 (en) * | 2020-02-24 | 2021-09-02 | 汕头大学 | 3d printed bionic artificial cervical intervertebral joint |
-
1998
- 1998-05-29 CN CN98234325U patent/CN2333369Y/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401996C (en) * | 2001-05-04 | 2008-07-16 | Ldr医学公司 | Intervertebral disc prosthesis and fitting tools |
| CN1720878B (en) * | 2001-05-04 | 2010-09-29 | Ldr医学公司 | Intervertebral disc prosthesis |
| CN100457062C (en) * | 2002-12-17 | 2009-02-04 | 斯恩蒂斯有限公司 | Intervertebral implant comprising joint parts mounted to form a universal joint |
| CN100396258C (en) * | 2002-12-17 | 2008-06-25 | 斯恩蒂斯有限公司 | Intervertebral implant |
| US8012212B2 (en) | 2003-04-07 | 2011-09-06 | Nuvasive, Inc. | Cervical intervertebral disk prosthesis |
| US8147551B2 (en) | 2003-04-07 | 2012-04-03 | Cervitech, Inc. | Method for implanting an intervertebral disk prosthesis |
| CN1901854B (en) * | 2003-12-10 | 2010-05-12 | 公理医学脊骨公司 | Method and apparatus for replacing a damaged spinal disc |
| CN1909856B (en) * | 2004-01-09 | 2010-12-22 | 华沙整形外科股份有限公司 | Posterior spinal device |
| CN1698551B (en) * | 2004-05-18 | 2010-10-27 | 齐默尔有限公司 | Intervertebral disk implant object |
| CN101060818B (en) * | 2004-10-18 | 2010-07-07 | 卡林·巴特纳-扬茨 | Physiological prosthesis for vertebral disc used for cervical spondylosis and lumbar vertebra |
| CN101056598B (en) * | 2004-10-18 | 2010-07-21 | 卡林·巴特纳-扬茨 | Inner prosthesis of vertebral disc with sports adapting edge for lumbar and cervical vertebra |
| CN102670334A (en) * | 2005-07-06 | 2012-09-19 | 弗朗茨·小科弗 | Intervertebral disc prosthesis |
| CN101340863B (en) * | 2005-11-04 | 2013-04-03 | 彼得·麦克康比 | A method of reducing loading failure for a prosthetic component |
| CN101404957B (en) * | 2006-01-30 | 2012-06-20 | 华沙整形外科股份有限公司 | Posterior joint replacement device |
| CN101815486B (en) * | 2007-10-05 | 2012-06-27 | 樊尚·玻缇拉忒 | Intervertebral prosthesis |
| CN102232880A (en) * | 2010-04-23 | 2011-11-09 | 蒋秀英 | Artificial intervertebral disk |
| CN103479451A (en) * | 2013-10-10 | 2014-01-01 | 北京贝思达生物技术有限公司 | Polyether-ether-ketone artificial spine intervertebral 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 |
| CN107049563B (en) * | 2017-04-19 | 2020-02-07 | 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |