DE29810798U1 - Osteosynthesis device - Google Patents

Osteosynthesis device

Info

Publication number
DE29810798U1
DE29810798U1 DE29810798U DE29810798U DE29810798U1 DE 29810798 U1 DE29810798 U1 DE 29810798U1 DE 29810798 U DE29810798 U DE 29810798U DE 29810798 U DE29810798 U DE 29810798U DE 29810798 U1 DE29810798 U1 DE 29810798U1
Authority
DE
Germany
Prior art keywords
fork head
support rod
osteosynthesis device
groove
surface profile
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 - Lifetime
Application number
DE29810798U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DePuy Spine SARL
Original Assignee
Schaefer Micomed GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaefer Micomed GmbH filed Critical Schaefer Micomed GmbH
Priority to DE29810798U priority Critical patent/DE29810798U1/en
Publication of DE29810798U1 publication Critical patent/DE29810798U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A61B17/70—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

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (15)

1. Osteosynthesevorrichtung mit einer Knochenschraube (1) mit einem eine Nut (6) aufweisenden Gabelkopf (4) und einem in die Nut (6) des Gabelkopfes (4) einzulegenden Stützstab (2), der ein Oberflächenprofil aufweist, der Gabelkopf (4) im Nutgrund (7) eine Oberflächenprofilierung (8) aufweist und der Gabelkopf (4) mit einer den Stützstab (2) fixierenden Madenschraube (3) versehen ist, wobei die Oberflächenprofilierung (8) des Nutgrundes (7) die Halterung des Stützstabes (2) in der Nut (6) ermöglichende Mittel aufweist und die Innenseiten der Schenkel (5) des Gabelkopfes (4) mit einem Abschnitt eines Innengewindes (9) versehen sind und das Innengewinde (9) nach Art eines Tannenbaumgewindes ausgebildet ist und eine dem Nutgrund (7) zugewandte Flanke (10) aufweist, die, ausgehend von der Achse (19) der Knochenschraube (1) in radialer Richtung gesehen, ansteigt.1. osteosynthesis device with a bone screw ( 1 ) with a fork head ( 4 ) having a groove ( 6 ) and a support rod ( 2 ) to be inserted into the groove ( 6 ) of the fork head ( 4 ) and having a surface profile, the fork head ( 4 ) has a surface profile ( 8 ) in the groove base ( 7 ) and the fork head ( 4 ) is provided with a grub screw ( 3 ) which fixes the support rod ( 2 ), the surface profile ( 8 ) of the groove base ( 7 ) holding the support rod ( 2 ) has enabling means in the groove ( 6 ) and the inner sides of the legs ( 5 ) of the fork head ( 4 ) are provided with a section of an internal thread ( 9 ) and the internal thread ( 9 ) is designed in the manner of a fir tree thread and one of the groove base ( 7 ) facing flank ( 10 ), which, starting from the axis ( 19 ) of the bone screw ( 1 ) seen in the radial direction, rises. 2. Osteosynthesevorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Flanke (10) radialer Richtung linear ansteigt. 2. Osteosynthesis device according to claim 1, characterized in that the flank ( 10 ) rises linearly in the radial direction. 3. Osteosynthesevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Flanke (10) in radialer Richtung gebogen ist.3. Osteosynthesis device according to one of the preceding claims, characterized in that the flank ( 10 ) is bent in the radial direction. 4. Osteosynthesevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens in einem Abschnitt des Gewindes der Steigungswinkel (α) der einzelnen, zwischen dem Nutgrund (7) und den freien Enden der Schenkel (5) des Gabelkopfes (4) vorgesehenen Flanken (10) gleich ist, abnimmt oder zunimmt.4. Osteosynthesis device according to one of the preceding claims, characterized in that at least in a portion of the thread of the pitch angle (α) of the individual, between the groove base ( 7 ) and the free ends of the legs ( 5 ) of the fork head ( 4 ) provided flanks ( 10 ) is the same, decreases or increases. 5. Osteosynthesevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Madenschraube (3) mit einem Innensechskant (14) betätigbar ist.5. Osteosynthesis device according to one of the preceding claims, characterized in that the grub screw ( 3 ) with an internal hexagon ( 14 ) can be actuated. 6. Osteosynthesevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Nutgrund (7) mit Längsrillen versehen ist.6. Osteosynthesis device according to one of the preceding claims, characterized in that the groove base ( 7 ) is provided with longitudinal grooves. 7. Osteosynthesevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stützstab (2) ein Gewindestab ist und die Oberflächenprofilierung (8) quer zur Längsachse des Stützstabes (2) verlaufende Querrillen aufweist. 7. The osteosynthesis device according to one of the preceding claims, characterized in that the support rod ( 2 ) is a threaded rod and the surface profile ( 8 ) has transverse grooves running transversely to the longitudinal axis of the support rod ( 2 ). 8. Osteosynthesevorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Querrillen zum Gewinde des Stützstabes (2) korrespondieren.8. osteosynthesis device according to claim 7, characterized in that the transverse grooves correspond to the thread of the support rod ( 2 ). 9. Osteosynthesevorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Querrillen eine geringere Tiefe aufweisen als das Gewinde des Stützstabes (2).9. osteosynthesis device according to claim 8, characterized in that the transverse grooves have a smaller depth than the thread of the support rod ( 2 ). 10. Osteosynthesevorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Querrillen eine dem Gewinde des Stützstabes (2) entsprechende Steigung aufweisen.10. Osteosynthesis device according to claim 8 or 9, characterized in that the transverse grooves have a pitch corresponding to the thread of the support rod ( 2 ). 11. Osteosynthesevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Oberflächenprofilierung (8) eine Riffelung ist.11. Osteosynthesis device according to one of the preceding claims, characterized in that the surface profile ( 8 ) is a corrugation. 12. Osteosynthesevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Stützstab (2) Umfangsnuten aufweist.12. Osteosynthesis device according to one of the preceding claims, characterized in that the support rod ( 2 ) has circumferential grooves. 13. Osteosynthesevorrichtung mit einer Knochenschraube (1) mit einem eine Nut (6) aufweisenden Gabelkopf (4) und einem in die Nut (6) des Gabelkopfes (4) einzulegenden Stützstab (2), der ein Oberflächenprofil aufweist, der Gabelkopf (4) im Nutgrund (7) eine Oberflächenprofilierung (8) aufweist und der Gabelkopf (4) mit einer den Stützstab (2) fixierenden Madenschraube (3) versehen ist, wobei die Oberflächenprofilierung (8) des Nutgrundes (7) die Halterung des Stützstabes (2) in der Nut (6) ermöglichende Mittel aufweist und die Innenseiten der Schenkel (5) des Gabelkopfes (4) mit einem Abschnitt eines Innengewindes (9) versehen sind und das Innengewinde (9) eine Flanke (10) aufweist, die, ausgehend von der Achse (19) der Knochenschraube (1) in radialer Richtung gesehen, mit einer Hinterschneidung (17) versehen ist.13. Osteosynthesis device with a bone screw ( 1 ) with a fork head ( 4 ) having a groove ( 6 ) and a support rod ( 2 ) to be inserted into the groove ( 6 ) of the fork head ( 4 ) and having a surface profile, the fork head ( 4 ) has a surface profile ( 8 ) in the groove base ( 7 ) and the fork head ( 4 ) is provided with a grub screw ( 3 ) which fixes the support rod ( 2 ), the surface profile ( 8 ) of the groove base ( 7 ) holding the support rod ( 2 ) in the groove ( 6 ) has enabling means and the inside of the legs ( 5 ) of the fork head ( 4 ) are provided with a section of an internal thread ( 9 ) and the internal thread ( 9 ) has a flank ( 10 ) which, starting from the Axis ( 19 ) of the bone screw ( 1 ) seen in the radial direction, is provided with an undercut ( 17 ). 14. Osteosynthesevorrichtung mit einer Knochenschraube (1) mit einem eine Nut (6) aufweisenden Gabelkopf (4) und einem in die Nut (6) des Gabelkopfes (4) einzulegenden Stützstab (2), der ein Oberflächenprofil aufweist, der Gabelkopf (4) im Nutgrund (7) eine Oberflächenprofilierung (8) aufweist und der Gabelkopf (4) mit einer den Stützstab (2) fixierenden Madenschraube (3) versehen ist, wobei die Oberflächenprofilierung (8) des Nutgrundes (7) die Halterung des Stützstabes (2) in der Nut (6) ermöglichende Mittel aufweist und die Innenseiten der Schenkel (5) des Gabelkopfes (4) mit einem Abschnitt eines Innengewindes (9) versehen sind und das Innengewinde (9) und die Madenschraube (3) ausgehend von der Achse (19) der Knochenschraube (1) in radialer Richtung gesehen, formschlüssig miteinander verbunden sind.14. Osteosynthesis device with a bone screw ( 1 ) with a fork head ( 4 ) having a groove ( 6 ) and a support rod ( 2 ) to be inserted into the groove ( 6 ) of the fork head ( 4 ) and having a surface profile, the fork head ( 4 ) has a surface profile ( 8 ) in the groove base ( 7 ) and the fork head ( 4 ) is provided with a grub screw ( 3 ) which fixes the support rod ( 2 ), the surface profile ( 8 ) of the groove base ( 7 ) holding the support rod ( 2 ) has enabling means in the groove ( 6 ) and the inside of the legs ( 5 ) of the fork head ( 4 ) are provided with a section of an internal thread ( 9 ) and the internal thread ( 9 ) and the grub screw ( 3 ) starting from the axis ( 19 ) of the bone screw ( 1 ) seen in the radial direction, are positively connected. 15. Osteosynthesevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Madenschraube (3) ein dem Innengewinde (14) des Gabelkopfes (4) entsprechendes Aussengewinde (12) aufweist.15. Osteosynthesis device according to one of the preceding claims, characterized in that the grub screw ( 3 ) has an internal thread ( 14 ) of the fork head ( 4 ) corresponding external thread ( 12 ).
DE29810798U 1998-06-17 1998-06-17 Osteosynthesis device Expired - Lifetime DE29810798U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29810798U DE29810798U1 (en) 1998-06-17 1998-06-17 Osteosynthesis device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29810798U DE29810798U1 (en) 1998-06-17 1998-06-17 Osteosynthesis device

Publications (1)

Publication Number Publication Date
DE29810798U1 true DE29810798U1 (en) 1999-10-28

Family

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Family Applications (1)

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DE (1) DE29810798U1 (en)

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EP1316294A3 (en) * 2001-11-27 2004-12-01 BIEDERMANN MOTECH GmbH Fastener assembly for securing a rod-shaped element in a retaining element connected to a shaft
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