DE325682T1 - Knochenschraube. - Google Patents
Knochenschraube.Info
- Publication number
- DE325682T1 DE325682T1 DE198888109604T DE88109604T DE325682T1 DE 325682 T1 DE325682 T1 DE 325682T1 DE 198888109604 T DE198888109604 T DE 198888109604T DE 88109604 T DE88109604 T DE 88109604T DE 325682 T1 DE325682 T1 DE 325682T1
- Authority
- DE
- Germany
- Prior art keywords
- bone
- shaft
- screw
- threaded
- bone screw
- 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.)
- Pending
Links
- 210000000988 bone and bone Anatomy 0.000 title claims 27
- 238000009434 installation Methods 0.000 claims 8
- 230000001154 acute effect Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 claims 1
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
- A61B17/7058—Plates mounted on top of bone anchor heads or shoulders
-
- 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
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
-
- 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
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
-
- 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
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Vehicle Body Suspensions (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Claims (3)
- Patentansprücheeinen länglichen Schaft mit einer zentralen Längsachse; einen ersten Gewindeteil mit einem ersten Aussengewinde, welches in Längsrichtung längs eines ersten Teils des Schaftes angeordnet ist;einen zweiten Gewindeteil mit einem zweiten Aussengewinde, welches in Längsrichtung längs eines zweiten Teils des Schaftes angeordnet und dazu bestimmt ist, in eine Oberfläche, welche eine Ausnehmung im Knochen definiert, einzugreifen, wobei- das zweite Gewinde eine Vorderflanke und eine Hinterflanke aufweist, wobei- die Vorderflanke zur zentralen Längsachse des Schaftes in einem ersten spitzen Winkel angeordnet ist, und- die Hinterflanke zur zentralen Längsachse des Schaftes in einem zweiten spitzen Winkel, welcher grosser als der erste spitze Winkel ist, angeordnet ist und die Vorderflanke unter Bildung eines vom Schaft nach aussen abstehenden Scheitels schneidet; wobeider Schaft zur übertragung von Kräften von aussen auf den Schaft einen Antriebsteil aufweist, um den Schaft um seine zentrale Längsachse zu drehen und den zweiten Gewindeteil bei Anwendung der Kraft von aussen auf den Antriebteil in den Knochen einzuschrauben;eine Mutter zum Aufschrauben auf den ersten Gewindeteil, um beim Anzeihen der Mutter auf dem ersten Gewindeteil eine Zugkraft im Schaft auszuüben und die Scheitel des zweiten Gewindeteils im Knochen zu verankern; wobei der erste Gewindeteil zwischen dem zweiten Gewindeteil und dem Antriebsteil angeordnet ist.
- 2. Knochenschraube zur Verwendung mit einem Verbindungsglied, um einen Knochenteil mit dem Verbindungsglied zu verbinden, wobei die Knochenschraube aufweist:- einen länglichen Schaft, welcher aufweist:- eine zentrale Längsachse;- einen ersten Teil mit Aussengewinde zur Aufnahme einer Mutter mit Innengewinde, um das Verbindungsglied an der Knochenschraube zu befestigen; und- eine zweiten Teil mit Aussengewinde für ein gewindemässiges Eingreiffen in eine Oberfläche, welche eine Ausnehmung im Knochenteil definiert, um die Knochenschraube am Knochenteil zu besfestigen; und- am Schaft angeordnete Mittel, um in einen Teil der Oberfläche, welcher die Ausnehmung im Knochenteil definiert, einzugreifen, um die Bewegung der Knochenschraube gegenüber dem Knochenteil in einer quer zur zentralen Längsachse des Schaftes verlaufenden Richtung zu begrenzen und ein Ausschrauben aus der Ausnehmung des Knochenteils zu blockieren, wobei- diese Mittel zwischen dem ersten Teil mit Aussengwinde und dem zweiten Teil mit Aussengewinde angeordnet sind.
- 3. Knochenschraube zur Verwendung beim Verbinden eines Knochenteils mit einem Verbindungsglied, wobei die Knochenschraube aufweist:- einen an einem ersten Endteil der Knochenschraube vorgesehenen Einbauabschnitt zum Eingreifen in den Knochenteil; und- einem an einem zweiten Endteil der Knochenschraube vorgesehenen Verbindungsabschnitt zur Verwendung beim Verbinden der Knochenschraube mit dem Verbindungsglied; wobei— der Einbauabschnitt einen äusseren Einbau-Schraubengang besitzt, welcher aufweist:- eine Kernteil;- einen Scheitelteil;eine Vörderflanken-Oberflache, welche säcftffzwischen dem Kern- und dem Scheitelteil erstreckt und nach vorn in eine vom Verbindungsabschnitt wegweisende Richtung ge- · richtet ist; undeine Hinterflanken-Oberfläche, welche sich zwischen dem Kern- und dem Scheitelteil erstreckt und nach hinten in eine Richtung auf den Verbindungsabschnitt zu gerichtet ist; wobei- der Kernteil in einer die zentrale Längsachse der Knochenschraube umfassenen Radialebene im Querschnitt gekrümmt ist;- die Hinterflanken-Oberfläche vom Kernteil gegen den Scheitelteil hin nach rückwärts und nach aussen geneigt ist;- der Scheitelteil des Einbau—Schraubengangs vom vordersten Teil der Hinterflanken-Oberfläche um einen Abstand, welcher kleiner als der Krümmungsradius des gekrümmten Kernteils des Einbau-Schraubengangs ist, nach hinten versetzt ist, derart, dass zwischen dem Scheitel- und dem Kerteil des Einbau-Schraubengangs eine nach hinten gerichtete Ausnehmung gebildet wird, und dass zwischen benachbarten Windungen des Kernteils des Einbau-Schraubengangs ein weiter Zwischenraum gebildet wird, durch welchen der Knochen zwischen benachbarten Windungen des Einbau-Schraubengangs an einander gegenüberliegenden Seiten einer sich durch das Krümmungszentrum des Kernteils und lotrecht zur zentralen Längsachse der Knochenschraube erstreckenden Radialebene radial nach innen in den Zwischenraum eindringen kann, um eine feste Befestigung für die Knochenschraube im Knochen zu bewirken.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/146,739 US4854311A (en) | 1986-01-09 | 1988-01-21 | Bone screw |
Publications (1)
Publication Number | Publication Date |
---|---|
DE325682T1 true DE325682T1 (de) | 1991-09-05 |
Family
ID=22518788
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE198888109604T Pending DE325682T1 (de) | 1988-01-21 | 1988-06-16 | Knochenschraube. |
DE88109604T Expired - Lifetime DE3885731T2 (de) | 1988-01-21 | 1988-06-16 | Knochenschraube. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE88109604T Expired - Lifetime DE3885731T2 (de) | 1988-01-21 | 1988-06-16 | Knochenschraube. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4854311A (de) |
EP (1) | EP0325682B1 (de) |
JP (1) | JPH01192345A (de) |
CA (1) | CA1294501C (de) |
DE (2) | DE325682T1 (de) |
ES (1) | ES2023085T3 (de) |
Families Citing this family (155)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH066810Y2 (ja) * | 1989-11-29 | 1994-02-23 | 旭光学工業株式会社 | 椎体固定用プレート |
DE3942326A1 (de) * | 1989-12-21 | 1991-06-27 | Haerle Anton | Schraube als osteosynthesehilfsmittel |
DE4010977C1 (de) * | 1990-04-05 | 1991-11-14 | Aesculap Ag, 7200 Tuttlingen, De | |
JPH04138152A (ja) * | 1990-09-29 | 1992-05-12 | Ikufumi Yamada | 上腕骨頚部骨折の内固定器具 |
US5113685A (en) * | 1991-01-28 | 1992-05-19 | Acromed Corporation | Apparatus for contouring spine plates and/or rods |
US5222954A (en) * | 1991-06-21 | 1993-06-29 | Artifex, Ltd. | Spinal implant system and method for installing the implant |
DE4136178A1 (de) * | 1991-11-02 | 1993-05-06 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen, De | Schaltung zur kontinuierlichen zoom-einstellung der bildbreite in einem fernsehempfaenger |
US5282862A (en) * | 1991-12-03 | 1994-02-01 | Artifex Ltd. | Spinal implant system and a method for installing the implant onto a vertebral column |
EP0616618B1 (de) * | 1991-12-13 | 1997-07-02 | Exxon Chemical Patents Inc. | ETHYLEN/HöHERE ALPHA-OLEFINCOPOLYMERE |
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US9161793B2 (en) | 1993-01-21 | 2015-10-20 | Acumed Llc | Axial tension screw |
US6030162A (en) * | 1998-12-18 | 2000-02-29 | Acumed, Inc. | Axial tension screw |
US8070786B2 (en) | 1993-01-21 | 2011-12-06 | Acumed Llc | System for fusing joints |
US5964768A (en) * | 1993-01-21 | 1999-10-12 | Acumed, Inc. | Tapered bone screw with continuously varying pitch |
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-
1988
- 1988-01-21 US US07/146,739 patent/US4854311A/en not_active Expired - Lifetime
- 1988-06-10 CA CA000569173A patent/CA1294501C/en not_active Expired - Lifetime
- 1988-06-16 DE DE198888109604T patent/DE325682T1/de active Pending
- 1988-06-16 EP EP88109604A patent/EP0325682B1/de not_active Expired - Lifetime
- 1988-06-16 ES ES198888109604T patent/ES2023085T3/es not_active Expired - Lifetime
- 1988-06-16 DE DE88109604T patent/DE3885731T2/de not_active Expired - Lifetime
- 1988-08-03 JP JP63194316A patent/JPH01192345A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0567288B2 (de) | 1993-09-24 |
EP0325682B1 (de) | 1993-11-18 |
CA1294501C (en) | 1992-01-21 |
JPH01192345A (ja) | 1989-08-02 |
DE3885731T2 (de) | 1994-04-28 |
EP0325682A1 (de) | 1989-08-02 |
ES2023085A4 (es) | 1992-01-01 |
US4854311A (en) | 1989-08-08 |
DE3885731D1 (de) | 1993-12-23 |
ES2023085T3 (es) | 1994-02-01 |
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