DE4447686A1 - Knochenschraube - Google Patents
KnochenschraubeInfo
- Publication number
- DE4447686A1 DE4447686A1 DE4447686A DE4447686A DE4447686A1 DE 4447686 A1 DE4447686 A1 DE 4447686A1 DE 4447686 A DE4447686 A DE 4447686A DE 4447686 A DE4447686 A DE 4447686A DE 4447686 A1 DE4447686 A1 DE 4447686A1
- Authority
- DE
- Germany
- Prior art keywords
- screw
- bone
- bone screw
- thread
- tip
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- 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, setting implements or the like
- 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 ; Bone 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
Description
Die Erfindung betrifft eine Knochenschraube, insbesondere
eine Pedikelschraube, mit einem Schraubenkopf und einem
Schraubenschaft.
Derartige Knochenschrauben sind in einer Vielzahl bekannt
(DE-Gbm 90 04 240, DE-Gbm 91 04 027, EP-A-346 521, DE-A 39
42 429, EP-A-443 894, EP-A-348 272, EP-A-465 158, EP-A-528
706, EP-A-443 892, DE-A 39 16 198, DE-C 41 10 002). Aus
diesen Druckschriften sind unterschiedliche Knochenschrauben
mit Schraubenköpfen bekannt, bei denen der Schraubenschaft
im wesentlichen zylinderförmig ausgebildet ist.
Der Erfindung liegt die Aufgabe zugrunde, eine
Knochenschraube der eingangs genannten Art derart
weiterzubilden, daß sie besser im Knochen verankerbar ist.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die
Knochenschraube einen sich von der Schraubenspitze in
Richtung des Gabelkopfes konisch erweiternden Schraubenkern
aufweist.
Die konische Form des Schraubenkerns hat den Vorteil, daß
die Knochenschraube besser im Knochen fixierbar ist, und
insbesondere beim Einschrauben in den Knochen stramm sitzt.
Die Knochenschraube wird nicht nur über die Gewindegänge
gehalten, sondern auch durch die Klemmwirkung des sich
konisch erweiternden Schraubenkerns.
Vorzugsweise ist der Außen- bzw. Nenndurchmesser der
Knochenschraube, d. h. der Gewindedurchmesser, konstant.
Dabei nimmt vorteilhaft die Breite der Gewindeschneide der
Knochenschraube von der Schraubenspitze ausgehend zu. Auch
hierdurch wird eine Klemmwirkung erzielt, durch die die
Knochenschraube zusätzlich am Knochen festgehalten wird.
Dabei ist bevorzugt die Gewindesteigung konstant.
Vorteilhaft erweitert sich der Schraubenkern bis zum Außen
bzw. Nenndurchmesser der Knochenschraube.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung
ergeben sich aus der nachfolgenden Beschreibung, in der
unter Bezugnahme auf die Zeichnung ein besonders bevorzugtes
Ausführungsbeispiel im einzelnen dargestellt ist. Dabei
können die in der Zeichnung dargestellten und in der
Beschreibung erwähnten Merkmale jeweils einzeln für sich
oder in beliebiger Kombination bei der Erfindung
verwirklicht sein. In der Zeichnung zeigen:
Fig. 1 eine Seitenansicht der erfindungsgemäßen
Knochenschraube; und
Fig. 2 eine Seitenansicht in Richtung des Pfeils II gemäß
Fig. 1, teilweise aufgeschnitten.
In der Fig. 1 ist insgesamt mit 1 eine Knochenschraube
dargestellt, die einen Gewindeschaft 2 und einen
Schraubenkopf 3 aufweist. Der Gewindeschaft 2 besteht aus
einem Schraubenkern 4 mit Schraubenspitze 5 und einem den
Schraubenkern 4 umgebenden Gewinde 6. Dabei ist erkennbar,
daß der Schraubenkern 4 sich von der Schraubenspitze 5 in
Richtung des Gabelkopfes 3 konisch erweitert. Der
Durchmesser des Gewindes 6 bleibt jedoch konstant,
wohingegen die Breite der Gewindeschneide 7 ausgehend vom
der Schraubenspitze 5 in Richtung des Gabelkopfes 3 zunimmt.
Die Steigung des Gewindes 6 bleibt jedoch über die ganze
Länge des Gewindeschaftes 2 konstant. Ferner ist in Fig. 1
erkennbar, daß die Unterseite 8 des Schraubenkopfes 3
ballig, insbesondere kugelförmig ausgebildet ist, was auch
durch die Linie 9 andeutungsweise dargestellt sein soll.
Claims (5)
1. Knochenschraube (1) mit einem Schraubenkopf (3) und
einem Schraubenschaft, dadurch gekennzeichnet, daß die
Knochenschraube (1) einen sich von der Schraubenspitze
(5) in Richtung des Gabelkopfes (3) konisch
erweiternden Schraubenkern (4) aufweist.
2. Knochenschraube nach Anspruch 1, dadurch
gekennzeichnet, daß der Außen- bzw. Nenndurchmesser der
Knochenschraube (1) konstant ist.
3. Knochenschrauben nach Anspruch 1 oder 2, dadurch
gekennzeichnet, daß sich der Schraubenkern (4) bis
zum Außen- bzw. Nenndurchmesser der Knochenschraube (1)
erweitert.
4. Knochenschraube nach einem der vorhergehenden
Ansprüche, dadurch gekennzeichnet, daß die Breite der
Gewindeschneide (7) der Knochenschraube (1) von der
Schraubenspitze (5) ausgehend zunimmt.
5. Knochenschraube nach einem der vorhergehenden
Ansprüche, dadurch gekennzeichnet, daß die
Gewindesteigung konstant ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4447686A DE4447686C2 (de) | 1993-05-18 | 1994-04-08 | Knochenschraube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4316542A DE4316542C1 (de) | 1993-05-18 | 1993-05-18 | Osteosynthesevorrichtung |
DE4447686A DE4447686C2 (de) | 1993-05-18 | 1994-04-08 | Knochenschraube |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4447686A1 true DE4447686A1 (de) | 1997-05-07 |
DE4447686C2 DE4447686C2 (de) | 1998-07-02 |
Family
ID=6488335
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4316542A Expired - Fee Related DE4316542C1 (de) | 1993-05-18 | 1993-05-18 | Osteosynthesevorrichtung |
DE59406375T Expired - Lifetime DE59406375D1 (de) | 1993-05-18 | 1994-04-08 | Osteosynthesevorrichtung |
DE4447686A Expired - Fee Related DE4447686C2 (de) | 1993-05-18 | 1994-04-08 | Knochenschraube |
DE59409516T Expired - Lifetime DE59409516D1 (de) | 1993-05-18 | 1994-04-08 | Pedikelschraube |
DE9421989U Expired - Lifetime DE9421989U1 (de) | 1993-05-18 | 1994-04-08 | Knochenschraube |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4316542A Expired - Fee Related DE4316542C1 (de) | 1993-05-18 | 1993-05-18 | Osteosynthesevorrichtung |
DE59406375T Expired - Lifetime DE59406375D1 (de) | 1993-05-18 | 1994-04-08 | Osteosynthesevorrichtung |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE59409516T Expired - Lifetime DE59409516D1 (de) | 1993-05-18 | 1994-04-08 | Pedikelschraube |
DE9421989U Expired - Lifetime DE9421989U1 (de) | 1993-05-18 | 1994-04-08 | Knochenschraube |
Country Status (9)
Country | Link |
---|---|
US (1) | US5738685A (de) |
EP (2) | EP0699055B2 (de) |
AT (2) | ATE196069T1 (de) |
AU (1) | AU6566494A (de) |
DE (5) | DE4316542C1 (de) |
DK (1) | DK0699055T3 (de) |
ES (1) | ES2118404T5 (de) |
HU (1) | HU217893B (de) |
WO (1) | WO1994026191A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2768610A1 (fr) * | 1997-09-22 | 1999-03-26 | Materiel Orthopedique En Abreg | Vis a os pour dispositifs d'osteosynthese, et procede de fabrication de cette vis |
Families Citing this family (213)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2697992B1 (fr) * | 1992-11-18 | 1994-12-30 | Eurosurgical | Dispositif de fixation sur une tige d'un organe, en particulier pour une instrumentation d'orthopédie rachidienne. |
US6077262A (en) * | 1993-06-04 | 2000-06-20 | Synthes (U.S.A.) | Posterior spinal implant |
GB9409691D0 (en) * | 1994-05-14 | 1994-07-06 | Richardson James B | A bone screw |
DE4436262C1 (de) * | 1994-10-11 | 1996-07-25 | Schaefer Micomed Gmbh | Repositionsschraube |
DE19605640C2 (de) * | 1996-02-15 | 2002-08-14 | Peter Griss | Osteosynthetisches Befestigungselement |
US6319270B1 (en) | 1996-08-05 | 2001-11-20 | Arthrex, Inc. | Headed bioabsorbable tissue anchor |
US6117162A (en) * | 1996-08-05 | 2000-09-12 | Arthrex, Inc. | Corkscrew suture anchor |
US6569188B2 (en) | 1996-08-05 | 2003-05-27 | Arthrex, Inc. | Hex drive bioabsorbable tissue anchor |
ES2147033T3 (es) * | 1997-01-23 | 2000-08-16 | Werner Hermann | Disposiciones de apriete para fijador ortopedico y usos de ellas. |
US6287308B1 (en) | 1997-07-14 | 2001-09-11 | Sdgi Holdings, Inc. | Methods and apparatus for fusionless treatment of spinal deformities |
US5951553A (en) * | 1997-07-14 | 1999-09-14 | Sdgi Holdings, Inc. | Methods and apparatus for fusionless treatment of spinal deformities |
DE19818765A1 (de) | 1998-04-07 | 1999-10-14 | Schaefer Micomed Gmbh | Osteosynthesevorrichtung |
FR2778089B1 (fr) * | 1998-04-30 | 2000-07-21 | Dimso Sa | Systeme d'osteosynthese rachidienne avec bride et verrou |
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DE19835816C2 (de) * | 1998-08-08 | 2002-02-07 | Schaefer Micomed Gmbh | Osteosynthesevorrichtung |
US6296642B1 (en) | 1998-11-09 | 2001-10-02 | Sdgi Holdings, Inc. | Reverse angle thread for preventing splaying in medical devices |
US8343186B2 (en) | 2004-04-06 | 2013-01-01 | Arthrex, Inc. | Fully threaded suture anchor with transverse anchor pin |
US9521999B2 (en) | 2005-09-13 | 2016-12-20 | Arthrex, Inc. | Fully-threaded bioabsorbable suture anchor |
ES2154227B1 (es) * | 1999-06-30 | 2001-11-16 | Surgival Co S A | Sistema poliaxial de fijacion de vertebras. |
DE19951145C2 (de) * | 1999-10-23 | 2003-11-13 | Schaefer Micomed Gmbh | Osteosynthesevorrichtung |
US6443953B1 (en) * | 2000-02-08 | 2002-09-03 | Cross Medical Products, Inc. | Self-aligning cap nut for use with a spinal rod anchor |
US6565566B1 (en) * | 2000-03-22 | 2003-05-20 | Spinal Concepts, Inc. | Sacral screw assembly and method |
AU7123101A (en) * | 2000-06-01 | 2001-12-11 | Hipokrat Tibbi Malzemeler Imalat Ve Pazarlama A.S. | New spinal system |
MXPA02012919A (es) * | 2000-07-28 | 2003-09-22 | Synthes Ag | Sistema fijador de columna vertebral. |
US7837716B2 (en) * | 2000-08-23 | 2010-11-23 | Jackson Roger P | Threadform for medical implant closure |
US7833250B2 (en) | 2004-11-10 | 2010-11-16 | Jackson Roger P | Polyaxial bone screw with helically wound capture connection |
DE20014648U1 (de) | 2000-08-24 | 2002-01-10 | Stryker Trauma Gmbh | Osteosynthesemittel |
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US6726689B2 (en) | 2002-09-06 | 2004-04-27 | Roger P. Jackson | Helical interlocking mating guide and advancement structure |
US8377100B2 (en) * | 2000-12-08 | 2013-02-19 | Roger P. Jackson | Closure for open-headed medical implant |
DE10108965B4 (de) * | 2001-02-17 | 2006-02-23 | DePuy Spine Sàrl | Knochenschraube |
KR20020069901A (ko) * | 2001-02-28 | 2002-09-05 | 유앤아이 주식회사 | 뼈 고정장치 |
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US7306603B2 (en) * | 2002-08-21 | 2007-12-11 | Innovative Spinal Technologies | Device and method for percutaneous placement of lumbar pedicle screws and connecting rods |
US8876868B2 (en) | 2002-09-06 | 2014-11-04 | Roger P. Jackson | Helical guide and advancement flange with radially loaded lip |
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US20040167525A1 (en) * | 2002-09-06 | 2004-08-26 | Jackson Roger P. | Anti-splay medical implant closure with multi-stepped removal counterbore |
US8282673B2 (en) | 2002-09-06 | 2012-10-09 | Jackson Roger P | Anti-splay medical implant closure with multi-surface removal aperture |
US20040167524A1 (en) * | 2002-09-06 | 2004-08-26 | Jackson Roger P. | Anti-splay medical implant closure with central multi-surface insertion and removal aperture |
US7914561B2 (en) | 2002-12-31 | 2011-03-29 | Depuy Spine, Inc. | Resilient bone plate and screw system allowing bi-directional assembly |
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US11241261B2 (en) | 2005-09-30 | 2022-02-08 | Roger P Jackson | Apparatus and method for soft spinal stabilization using a tensionable cord and releasable end structure |
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Also Published As
Publication number | Publication date |
---|---|
DE9421989U1 (de) | 1997-07-17 |
WO1994026191A1 (de) | 1994-11-24 |
ATE196069T1 (de) | 2000-09-15 |
HUT74555A (en) | 1997-01-28 |
ES2118404T3 (es) | 1998-09-16 |
EP0797960A2 (de) | 1997-10-01 |
AU6566494A (en) | 1994-12-12 |
DE4316542C1 (de) | 1994-07-21 |
DK0699055T3 (da) | 1998-11-09 |
HU217893B (hu) | 2000-05-28 |
HU9503287D0 (en) | 1996-01-29 |
EP0699055B2 (de) | 2001-09-19 |
DE4447686C2 (de) | 1998-07-02 |
EP0797960A3 (de) | 1997-10-29 |
EP0797960B1 (de) | 2000-09-06 |
ES2118404T5 (es) | 2002-02-16 |
DE59406375D1 (de) | 1998-08-06 |
EP0699055A1 (de) | 1996-03-06 |
US5738685A (en) | 1998-04-14 |
ATE167795T1 (de) | 1998-07-15 |
EP0699055B1 (de) | 1998-07-01 |
DE59409516D1 (de) | 2000-10-12 |
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