NO175703B - Anordning for justerbar fiksering av spinal osteosyntesestenger - Google Patents
Anordning for justerbar fiksering av spinal osteosyntesestenger Download PDFInfo
- Publication number
- NO175703B NO175703B NO910459A NO910459A NO175703B NO 175703 B NO175703 B NO 175703B NO 910459 A NO910459 A NO 910459A NO 910459 A NO910459 A NO 910459A NO 175703 B NO175703 B NO 175703B
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- Norway
- Prior art keywords
- rod
- screw
- housing
- ring
- locking screw
- Prior art date
Links
- 230000001097 osteosynthetic effect Effects 0.000 title 1
- 230000000295 complement effect Effects 0.000 claims abstract description 3
- 239000002775 capsule Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 102000004315 Forkhead Transcription Factors Human genes 0.000 description 1
- 108090000852 Forkhead Transcription Factors Proteins 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/704—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other the longitudinal element passing through a ball-joint in the screw head
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8695—Washers
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Surgical Instruments (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Massaging Devices (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Golf Clubs (AREA)
- Earth Drilling (AREA)
- Prostheses (AREA)
Description
Foreliggende oppfinnelse vedrører en anordning for fiksering av spinalosteosyntesestenger på pedikulærskruer som muliggjør anpasning og reetablering av de fysiologiske kurvene til ryggraden.
Generelt er de pedikulære skruene implantert ved stenger eller plater, hvor skruen i alle tilfeller er strengt rettvinklet til stangen eller platen.
Fra WO-A-89/00028 er det kjent et spinalfeste hvor skruen, for å kunne tillate en justering mellom stangen og skruen, har et ytre sfærisk hode og hver av mutterne har en komple-mentært utformet sfærisk konkav overflate som er festet på stangen på hver side av skruehodet. En ulempe med denne festeanordningen er at den krever en gjenget stang som er kostbar og gjengene danner spisse kanter som generelt er sterkt uønsket i implantater. Fra DE-A-2 834 891 er det kjent et festesystem som også innbefatter en gjenget stang. Stangen må være gjenget for å motta strammemuttere og de sfæriske delene av mutterne er i seg selv ikke istand til å utvise en strammeeffekt på stengene. Fra DE-A-3 504 495 er det kjent et festeorgan hvis hode har en gjennomgående åpning som strekker seg fra side til side. Denne publikasjonen hverken foreslår eller beskriver en gjenget plugg som virker som en sfærisk splittering.
DE-A-3 614 101 beskriver et festeorgan som utgjøres av tilsammen seks deler. Festeorganet er ikke utformet for å motta og låse på plass en sylindrisk stang. Innretningene som er nødvendig for å oppnå en justerbar vinkel mellom skruedelen og endedelen er ekstremt komplisert.
Fra US-A- 4 836 196 er det kjent et festeorgan som er ment å samvirk med en plate. Dette festeorganet vil kreve ytterst kompliserte modifikasjoner for å kunne tilpasses en ring med vinkeljustering og det er ikke foreslått noen slike modifikasjoner .
Fra EP-0-077 159 er det kjent en ryggmargsspreder, men det er 1 denne publikasjonen ikke foreslått noen slags sfærisk splittring som er festet på en glatt sylindrisk stang.
Fra EP-A-0 330 881 er det kjent et festeorgan med inn-retninger for binkeljustering mellom skruene og stangen. En ulempe med dette festeorganet er at før stanges festes i skruehodet, kan den løse strammedelen mistes. En annen ulempe med denne anordningen er at den krever tilskruing av to strammeskruer og finjusteringen av vinkelorienteringen av stangen krever etterfølgende stramming av begge skruene og dette er meget arbeidskrevende.
Fra EP-A-0 348 272 er det kjent et gaffelhode i henhold til kjent teknikk. Det er imidlertid ikke beskrevet at det kan oppnås en vinkeljustering av stangen ved bruk av en ytterli-gere splittring og passende utforming av den gjengede pluggenden og gaffelbunnen.
Oppfinnelsen prøver å unngå disse problemene og frembringer en stangfikseringsanordning som gjør det mulig å justere ribbene med hensyn til aksene til de pedikulære skruene.
Hensikten med oppfinnelsen er å frembringe en anordning for fiksering av spinal osteosyntesestenger på pedikulære stenger av den typen som inkluderer et gaffelformet hode som definerer to grener som mottar en stang som skal fikseres, hvilken stang låses i innkapslingen med en låseskrue, hvor den videre omfatter, plassert på stangen og innført mellom låseskruen og bunnen av innkapslingen, en splittring hvis ytre motstående flate er rettet mot låseskruen og bunnen er konveks og mottas i tilsvarende konkave overflater på enden av låseskruen og bunnen av den mottakende innkapslingen av stangen, hvilken ring tillater en viss vinklet klaring av stangen med hensyn til skruens akse før stramming av skruen. En slik anordning muliggjør en justering av vinkelen som dannes mellom stangen og aksen til pedikaerskruen, spesielt i saggitalplanet, og å låse stangen i den ønskede posisjonen ved hjelp av splittringen som deformeres og immobiliserer stangen under trykk av låseskruen.
Andre egenskaper og fordeler med oppfinnelsen vil fremgå fra den videre beskrivelsen av en utførelsesform, hvilken beskrivelse kun er gitt som et eksempel med henvisning til de medfølgende tegningene. Fig. 1 viser delene til en anordning i henhold til oppfinnelsen. Fig. 2 viser anordningen i fig. 1 sammensatt, bortsett fra kapselen. Fig. 3 viser en seksjon langs saggitalplanet til den pedikulære skruen i henhold til oppfinnelsen. Fig.4 er en perspektivskisse av en splittring i henhold til oppfinnelsen.
Fig. 5 viser ringen i fig. 4 forfra.
Fig. 6 viser et utsnitt av en låseskrue i henhold til oppfinnelsen. Fig. 7 viser en forstørrelse av enden av stangen i fig. 1. Figur 1 viser ved 1 en kjent type pedikulærskrue. Den består av en konisk skrue 2, en spiss 3, og et gaffelformet sylindrisk hode 4 gjennomskåret på begge sider. Mer spesielt omfatter hodet 4 to motsatt parallell grener 4a og 4b som sammen definerer et skall eller innkapsling 5 med en generell akse rettvinklet på skrueaksen 2 og som kan motta en generelt sylinderformet stang eller integraliseringselement 6. En slik konstruksjon er velkjent og er f.eks. beskrevet i GB-2.173.104 .
De motstående indre flatene til forgreningene 4a og 4b er sylindriske og gjenget på en slik måte at de kan motta en låseskrue 7 for låsing av stangen 6 i innkapslingen 5 på samme måte som skruelåseanordningen beskrevet i EP-0.010.527.
Hodet 4 mottar en kapsel 8 som dekker de øvre delene av forgreningene 4a og 4b.
I henhold til oppfinnelsen sikres låsing av stangen 6 ved hjelp av en splittring 9 som kan gli fritt over stangen 6 i innkapslingen 5 og som er låst av låseskruen 7.
Ringen 9, enden av låseskruen 7 og den delen av innkapslingen som er i kontakt med ringen 9 er tilpasset hverandre på en spesiell måte.
I den fremstilte utførelsesformen består ringen 9 (fig. 4) av en ytre sfærisk konveks flate 10 som for det første samarbeider med en sfærisk konveks flate 11 (fig. 6) i enden av den koniske delen av låseskruen 7, og for det andre med en sfærisk konkav flate 12 (fig. 3) i bunnen av den mottakende innkapslingen 5 mellom forgreningene 4a og 4b til stangen 6.
Ringen 9 er plassert på en slik måte at dens plan er omtrent rettvinklet (fig. 2) til saggitalplanet til skruen 1, som _er definert ved aksen 13 til skruen og den generelle aksen til innkapslingen 5 som mottar stangen 6.
Ringen 9 er forsynt med en rett slisse 14 (fig. 4 og 5) med en indre sylindrisk flate 15 såvidt større enn stangens 6 diameter.
Stangen 6 hvorpå ringen 9 er plassert er innført på innsiden av innkapslingen 5 til den pedikulære skruen 1 etter at skruen er plassert i en passende bendel. Ringen 9 inngripes av huset 5, 12 som vist på fig. 2, deretter skrus låseskruen 7 inn i mellomrommet mellom forgreningene 4a og 4b. Før ringen låses plasseres kapselen 8 ved ganske enkelt å skreve over de to forgreningene 4a og 4b, deretter orienteres stangen 6 passende på innsiden av saggitalplanet (fig. 2) og låses med den ønskede orienteringen ved å komprimere splittringen 9 med låseskruen 7. Klaringen til stangen 6 er f.eks. 15 ° rundt posisjonene rettvinklet til aksen 13 til skruen 1 som vist i fig. 2.
Ved justering av stangen 6 glir ringen 9 over de sfæriske overflatene 11 og 12 som omgir stangen.
For å erholde en fri vinkel mellom stangen 6 er bunnen av innkapslingen 5 til høyre for de to motstående innløpene såvidt utspart ved 15 (fig. 2 og 3), vil den koniske seksjonen 16 til punktet av låseskruen 7 (fig. 6) sikrer stangen en fri klaring fra låseskruesiden.
Kapselen 8 omfatter (fig. 2) to motstående skjellformer 17 for den frie klaringen av stangen 6 og en midtre gjennombo-ring 18 for innføring av en skrunøkkel, f. eks. en sek-skantnøkkel, for tilstramming av låseskruen 7 ved hjelp av en hul seks-kantet utsparing 19 på den øvre delen av skruen 7.
Hensikten med kapselen 8 er i hovedsak å unngå avstand mellom de to forgreningene 4a og 4b når låseskruen tilstrammes. Kapselen 8 kan presses sammen dersom materialet i skruen 1 eller størrelse av forgreningene 4a, 4b, spesielt med hensyn til tykkelsen, tillater det.
En skikkelig tilstramming av skruen 7 medfører at stangen 6 låses av ringen 9 i den valgte posisjonen, hvor åpningen 14 fortrinnsvis er plassert på siden, som vist i fig. 2. Stangen er dermed fullstendig låst, både med hensyn til orientering og rotasjon om dens akse.
Stangen 6 kan f.eks. være en glatt sperreelement med seks-kantede utsparinger i hver ende (fig. 7) eller et jevnt element sammensatt av fleksible flettede sylindriske fibre.
Ved å frembringe hull eller utsparinger 20, gjør dette at en tilsvarende formet skrunøkkel kan innføres for å bevirke dreining av ryggsøylen.
Ved å bevirke rotasjonen med skrunøkkelen i samme retning som stangens 6 akse, vil denne stangen rotere og dermed vil ryggsøylen dreie langs sin vertikale akse.
Oppfinnelsen er ikke kun begrenset til den beskrevne utførelsesformen, men dekker også alle mulige varianter, spesielt med hensyn til form og plassering av de konvekse og konkave overflater til ringen 9 og overflatene 11 og 12 mellom hvilke den skrues og med hensyn til låseskruen 7 som kan skrues i de motstående forgreningene 4a og 4b eller i et stykke som er montert på hodet 4 til skruen. På samme måte kan form og dimensjoner til ringen 9 og slissen 14 også varieres uten å avvike fra oppfinnelsen i den grad at slissen spiller samme rolle for elastisk festing av ringen ved å klemme den på stangen som skal låses.
I tillegg kan endene av stangen 6 generelt ha indre eller ytre vinklede former som vist på fig. 7 og konturen av denne formen kan f.eks. være polygon med n sider og passende anpasset konturen til skrunøkkelen som gjør at stangen 6 kan rotere om sin akse.
Claims (5)
1.
Anordning for fiksering av spinal osteosyntesestenger på pedikulærskruer (1) av den typen som innbefatter et gaffelformet hode (4) som definerer to mot hverandre vendende parallelle grener (4a, 4b) som sammen definerer et hus (5) med en akse generelt rettvinklet til skrueaksen for å motta en stang (6) som skal festes som er blokkert i huset (5) av en strammekrue (7) innført mellom grenene (4a, 4b), karakterisert ved at anordningen ytterli-gere innbefatter en splittring (9) anordnet på stangen (6) og plassert mellom låseskruen og bunnen av huset (5), hvis motstående ytterflater (10) rettet mot strammeskruen (7) og bunnen er konveks og mottas i komplementære konkave overflater (11, 12) som enden av strammeskruen (7) og bunnen av huset (5) som mottar stangen (6) er utstyrt med, hvilken ring (9) tillater en viss vinklet klaring av stangen (6) med hensyn til skruens (1) akse før stramming av skruen (7).
2.
Anordning i henhold til krav 1, karakterisert ved at de konvekse (10) og konkave (11, 12) overflatene til strammeskruen (7) og bunnen av huset (5) som mottar stangen (6) er sfæriske.
3.
Anordning i henhold til et eller flere av kravene 1-2, karakterisert ved at bunnen av huset (5) som mottar stangen (6) på nivå med inngangene til huset og på begge sider av den konkave overflaten (12) er utstyrt med klaringsutsparinger (15).
4 .
Anordning i henhold til et eller flere av de foregående krav, karakterisert ved at grenene (4a, 4b) til hodet (4) til skruen og strammekruen (7) er dekket av en
kapsel (8) som er utstyrt med et midtre hull (18) for tilgang til utsparingen for kontroll av strammeskruen.
5.
Anordning i henhold til krav 4, karakterisert ved at kapslen (8) på sin kant er utstyrt med ved motstående utsparinger (17) som gir fri klaring til stangen (6).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR909001634A FR2657776B2 (fr) | 1989-02-09 | 1990-02-08 | Instrumentation rachidienne pour fixation pediculaire universelle par vis diapason a reglage micrometrique. |
FR9003694A FR2659546B1 (fr) | 1990-03-19 | 1990-03-19 | Dispositif de fixation orientable de tiges d'osteosynthese rachidienne. |
Publications (4)
Publication Number | Publication Date |
---|---|
NO910459D0 NO910459D0 (no) | 1991-02-06 |
NO910459L NO910459L (no) | 1991-08-09 |
NO175703B true NO175703B (no) | 1994-08-15 |
NO175703C NO175703C (no) | 1994-11-23 |
Family
ID=26227857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO910459A NO175703C (no) | 1990-02-08 | 1991-02-06 | Anordning for justerbar fiksering av spinal osteosyntesestenger |
Country Status (13)
Country | Link |
---|---|
US (1) | US5176680A (no) |
EP (1) | EP0441729B1 (no) |
JP (1) | JP2524903B2 (no) |
AT (1) | ATE99907T1 (no) |
AU (1) | AU649995B2 (no) |
CA (1) | CA2035348C (no) |
DE (2) | DE441729T1 (no) |
DK (1) | DK0441729T3 (no) |
ES (1) | ES2048574T3 (no) |
FI (1) | FI102721B1 (no) |
HK (1) | HK101296A (no) |
MY (1) | MY105455A (no) |
NO (1) | NO175703C (no) |
Families Citing this family (411)
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WO1991016020A1 (en) * | 1990-04-26 | 1991-10-31 | Danninger Medical Technology, Inc. | Transpedicular screw system and method of use |
CH685850A5 (de) * | 1990-11-26 | 1995-10-31 | Synthes Ag | Verankerungseinrichtung |
GB9110778D0 (en) * | 1991-05-18 | 1991-07-10 | Middleton Jeffrey K | Apparatus for use in surgery |
FR2680461B1 (fr) * | 1991-08-19 | 1993-11-26 | Fabrication Mat Orthopedique | Implant pour dispositif d'osteosynthese notamment du rachis et dispositif correspondant pour sa mise en place. |
FR2681776A1 (fr) * | 1991-09-30 | 1993-04-02 | Fixano Sa | Dispositif d'osteosynthese vertebrale. |
DE9115201U1 (de) * | 1991-12-07 | 1992-02-06 | Howmedica GmbH, 2314 Schönkirchen | Knochennagel zur Versorgung von Frakturen der Speiche |
DE9202745U1 (de) * | 1992-03-02 | 1992-04-30 | Howmedica Gmbh, 2314 Schoenkirchen | Vorrichtung zum Verspannen von Wirbeln der menschlichen Wirbelsäule |
DE59301618D1 (de) * | 1992-06-04 | 1996-03-28 | Synthes Ag | Osteosynthetisches Befestigungselement |
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US5498264A (en) * | 1992-07-21 | 1996-03-12 | Synthes (U.S.A.) | Clamp connection for connecting two construction components for a setting device, particularly an osteosynthetic setting device |
US5397363A (en) * | 1992-08-11 | 1995-03-14 | Gelbard; Steven D. | Spinal stabilization implant system |
US5888221A (en) * | 1992-08-11 | 1999-03-30 | Gelbard; Steven D. | Spinal stabilization implant system |
US5545165A (en) * | 1992-10-09 | 1996-08-13 | Biedermann Motech Gmbh | Anchoring member |
DE69326867D1 (de) * | 1992-09-15 | 1999-12-02 | Remi Cavagna | Vorrichtung zur Osteosynthese von Rückenwirbeln |
FR2696335B1 (fr) * | 1992-10-07 | 1994-12-02 | Bouvet Jean Claude | Dispositif d'immobilisation d'une barre pour, notamment, ostéosynthèse ou arthrodèse. |
FR2697743B1 (fr) * | 1992-11-09 | 1995-01-27 | Fabrication Mat Orthopedique S | Dispositif d'ostéosynthèse rachidienne applicable notamment aux vertèbres dégénératives. |
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DE4243951C2 (de) * | 1992-12-23 | 1997-07-03 | Plus Endoprothetik Ag | Vorrichtung zur Versteifung eines aus wenigstens zwei Wirbeln bestehenden Wirbelsäulenabschnitts |
US5527314A (en) * | 1993-01-04 | 1996-06-18 | Danek Medical, Inc. | Spinal fixation system |
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FR2702362B3 (fr) * | 1993-02-24 | 1995-04-14 | Soprane Sa | Fixateur pour les ostéosynthèses du rachis lombo-sacré. |
DE4307576C1 (de) * | 1993-03-10 | 1994-04-21 | Biedermann Motech Gmbh | Knochenschraube |
DE4316542C1 (de) * | 1993-05-18 | 1994-07-21 | Schaefer Micomed Gmbh | Osteosynthesevorrichtung |
US6077262A (en) * | 1993-06-04 | 2000-06-20 | Synthes (U.S.A.) | Posterior spinal implant |
ES2324927T3 (es) * | 1993-07-02 | 2009-08-19 | Synthes Gmbh | Implante vertebral posterior. |
US5437669A (en) * | 1993-08-12 | 1995-08-01 | Amei Technologies Inc. | Spinal fixation systems with bifurcated connectors |
FR2709412B1 (fr) * | 1993-09-01 | 1995-11-24 | Tornier Sa | Vis pour fixateur lombo-sacré. |
DE4329788B4 (de) * | 1993-09-03 | 2007-05-16 | Rudolf Mauk | Knochenschraube für die Osteosynthese |
US5415658A (en) * | 1993-12-14 | 1995-05-16 | Pioneer Laboratories, Inc. | Surgical cable loop connector |
JPH07163580A (ja) * | 1993-12-15 | 1995-06-27 | Mizuho Ika Kogyo Kk | 側弯症前方矯正装置 |
JP2605313Y2 (ja) * | 1993-12-28 | 2000-07-10 | 旭光学工業株式会社 | 脊椎後方矯正部材の固定具 |
DE4425357C2 (de) * | 1994-07-18 | 1996-07-04 | Harms Juergen | Verankerungselement |
US5961517A (en) * | 1994-07-18 | 1999-10-05 | Biedermann; Lutz | Anchoring member and adjustment tool therefor |
US5575791A (en) * | 1994-07-27 | 1996-11-19 | Lin; Chih-I | Universal eccentric fixation mechanism for orthopedic surgery |
US5643260A (en) * | 1995-02-14 | 1997-07-01 | Smith & Nephew, Inc. | Orthopedic fixation system |
FR2731344B1 (fr) | 1995-03-06 | 1997-08-22 | Dimso Sa | Instrumentation rachidienne notamment pour tige |
US5584834A (en) * | 1995-07-13 | 1996-12-17 | Fastenetix, L.L.C. | Polyaxial locking screw and coupling element assembly for use with side loading rod fixation apparatus |
US5609593A (en) * | 1995-07-13 | 1997-03-11 | Fastenetix, Llc | Advanced polyaxial locking hook and coupling element device for use with top loading rod fixation devices |
US5554157A (en) * | 1995-07-13 | 1996-09-10 | Fastenetix, L.L.C. | Rod securing polyaxial locking screw and coupling element assembly |
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CH633174A5 (en) * | 1978-06-28 | 1982-11-30 | Synthes Ag | Fixator for fixing bone or bone fragments, especially vertebrae |
US4502473A (en) * | 1981-08-06 | 1985-03-05 | National Research Development Corp. | Apparatus for external fixation of bone fractures |
EP0077159A1 (en) * | 1981-10-14 | 1983-04-20 | Brian Norman Atkins | Vertebrae spreader |
US4483334A (en) * | 1983-04-11 | 1984-11-20 | Murray William M | External fixation device |
US4569338A (en) * | 1984-02-09 | 1986-02-11 | Edwards Charles C | Sacral fixation device |
DE3614101C1 (de) * | 1986-04-25 | 1987-10-22 | Juergen Prof Dr Med Harms | Pedikelschraube |
DE3722590C1 (en) * | 1987-07-08 | 1988-12-08 | Harms Juergen | Positioning device for stabilizing spinal segments |
DE3800052A1 (de) * | 1987-07-08 | 1989-07-13 | Harms Juergen | Positionierungsschraube |
FR2624720B1 (fr) * | 1987-12-21 | 1994-04-15 | Fabrication Materiel Orthopediqu | Implant pour dispositif d'osteosynthese, notamment du rachis |
US4836196A (en) * | 1988-01-11 | 1989-06-06 | Acromed Corporation | Surgically implantable spinal correction system |
US4887596A (en) * | 1988-03-02 | 1989-12-19 | Synthes (U.S.A.) | Open backed pedicle screw |
CH683963A5 (de) * | 1988-06-10 | 1994-06-30 | Synthes Ag | Fixateur intern. |
FR2633177B1 (fr) * | 1988-06-24 | 1991-03-08 | Fabrication Materiel Orthopedi | Implant pour dispositif d'osteosynthese rachidienne, notamment en traumatologie |
FR2642643B1 (fr) * | 1989-02-09 | 1991-05-10 | Vignaud Jean Louis | Instrumentation rachidienne pour fixation pediculaire universelle par vis diapason a reglage micrometrique |
FR2645732B1 (fr) * | 1989-04-13 | 1997-01-03 | Cotrel Yves | Implant vertebral pour dispositif d'osteosynthese |
CH678803A5 (no) * | 1989-07-12 | 1991-11-15 | Sulzer Ag | |
FR2650173B1 (fr) * | 1989-07-26 | 1991-11-15 | Jbs Sa | Procede et dispositif de redressement, fixation, compression, elongation du rachis |
-
1991
- 1991-02-05 CA CA002035348A patent/CA2035348C/fr not_active Expired - Lifetime
- 1991-02-06 FI FI910564A patent/FI102721B1/fi active
- 1991-02-06 NO NO910459A patent/NO175703C/no not_active IP Right Cessation
- 1991-02-06 AU AU70823/91A patent/AU649995B2/en not_active Expired
- 1991-02-06 MY MYPI91000179A patent/MY105455A/en unknown
- 1991-02-08 US US07/652,101 patent/US5176680A/en not_active Expired - Lifetime
- 1991-02-08 DK DK91450001.2T patent/DK0441729T3/da active
- 1991-02-08 AT AT91450001T patent/ATE99907T1/de not_active IP Right Cessation
- 1991-02-08 JP JP3075960A patent/JP2524903B2/ja not_active Expired - Lifetime
- 1991-02-08 DE DE199191450001T patent/DE441729T1/de active Pending
- 1991-02-08 DE DE69100953T patent/DE69100953T2/de not_active Expired - Lifetime
- 1991-02-08 ES ES91450001T patent/ES2048574T3/es not_active Expired - Lifetime
- 1991-02-08 EP EP19910450001 patent/EP0441729B1/fr not_active Expired - Lifetime
-
1996
- 1996-06-13 HK HK101296A patent/HK101296A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US5176680A (en) | 1993-01-05 |
JPH05146451A (ja) | 1993-06-15 |
FI910564A (fi) | 1991-08-09 |
NO175703C (no) | 1994-11-23 |
DK0441729T3 (da) | 1994-05-02 |
CA2035348C (fr) | 2000-05-16 |
DE441729T1 (de) | 1992-10-15 |
EP0441729A1 (fr) | 1991-08-14 |
NO910459D0 (no) | 1991-02-06 |
DE69100953T2 (de) | 1994-06-16 |
FI910564A0 (fi) | 1991-02-06 |
FI102721B (fi) | 1999-02-15 |
NO910459L (no) | 1991-08-09 |
AU649995B2 (en) | 1994-06-09 |
ES2048574T3 (es) | 1994-03-16 |
EP0441729B1 (fr) | 1994-01-12 |
CA2035348A1 (fr) | 1991-08-09 |
DE69100953D1 (de) | 1994-02-24 |
MY105455A (en) | 1994-10-31 |
FI102721B1 (fi) | 1999-02-15 |
JP2524903B2 (ja) | 1996-08-14 |
AU7082391A (en) | 1991-08-15 |
ATE99907T1 (de) | 1994-01-15 |
HK101296A (en) | 1996-06-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK1K | Patent expired |