DE102005037172A1 - Screw for fixing fractured femoral neck, comprises complementary clip held in longitudinal grooves - Google Patents
Screw for fixing fractured femoral neck, comprises complementary clip held in longitudinal grooves Download PDFInfo
- Publication number
- DE102005037172A1 DE102005037172A1 DE200510037172 DE102005037172A DE102005037172A1 DE 102005037172 A1 DE102005037172 A1 DE 102005037172A1 DE 200510037172 DE200510037172 DE 200510037172 DE 102005037172 A DE102005037172 A DE 102005037172A DE 102005037172 A1 DE102005037172 A1 DE 102005037172A1
- Authority
- DE
- Germany
- Prior art keywords
- clasp
- femoral neck
- neck screw
- grooves
- 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.)
- Ceased
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
- A61B17/74—Devices for the head or neck or trochanter of the femur
-
- 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
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (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)
Abstract
Description
Die Erfindung betrifft eine Schenkelhalsschraube mit Rotationssicherung nach dem Oberbegriff des Anspruchs 1.The The invention relates to a femoral neck screw with anti-rotation according to the preamble of claim 1.
Aus
der
Bei Verwendung des beschriebenen Osteosynthesehilfsmittels kann es bei der Versorgung pertrochanterer Femurfraktionen mit kurzem Kopf-Hals-Fragment oder bei erheblicher Osteoporose zu Komplikationen im Bereich der Schenkelhalsschraube kommen. Die Schenkelhalsschraube kann bei reduzierter Knochensubstanz oder kranialer Fehllage ausbrechen. Insbesondere besteht die Gefahr der sekundären Rotation des Kopf-Hals-Fragments bei exzentrischer Positionierung der Schenkelhalsschraube.at Use of the described osteosynthesis adjuvant may be the supply of pertrochanteric femur fractions with a short head and neck fragment or in case of significant osteoporosis complications in the field of Femoral neck screw come. The femoral neck screw can be reduced Break out bone substance or cranial misplacement. Especially there is a danger of secondary Rotation of the head and neck fragment in eccentric positioning the femoral neck screw.
Es ist nun andererseits bekannt, statt einer Schenkelhalsschraube eine Art Klinge zu verwenden, welche durch eine entsprechende Öffnung des Verriegelungsnagels hin durchgeführt wird. Im Hinblick auf die Rotationsstabilität ist eine derartige Klinge günstiger. Das Einbringen einer solchen Klinge ist jedoch im Vergleich zum Einschrauben einer Schenkelhalsschraube weitaus problematischer. Außerdem läßt sich mit Hilfe einer Klinge eine Frakturkompression nicht erzielen.It is now known on the other hand, instead of a femoral neck screw a Art to use blade, which through a corresponding opening of the locking nail carried out becomes. In terms of rotational stability is such a blade cheaper. However, the introduction of such a blade is compared to Screwing in a femoral neck screw is much more problematic. In addition, can be Do not achieve fracture compression using a blade.
Diese
Problematik ist in der
In der zitierten Schrift wird ferner vorgeschlagen, die Tiefe der Nut zum proximalen Ende der Schenkelhalsschraube hin flacher verlaufen zu lassen, um so eine Art Rampe zu bilden, auf welcher sich die Spangenzinken beim Einschieben gegenseitig abspreizen und so eine deutliche Vergrößerung der Last aufnehmenden Flächen bewirken.In The cited document also proposes the depth of the groove flatten towards the proximal end of the femoral neck screw so as to form a kind of ramp on which the Spangenzinken when pushing apart each other and so one significant increase in the Load-bearing surfaces cause.
Anhand
von Prototypen und Versuchen konnte zwischenzeitlich belegt werden,
daß die
in der
Es bestand daher die Aufgabe, eine Schenkelhalsschraube und Spange der beschriebenen Art zu schaffen, welche nicht nur zu wesentlich niedrigeren Kosten herstellbar sein, sondern auch einen deutlich geringeren Einschubkraftbedarf besitzen sollte.It Therefore, the task was a femoral neck screw and clasp of the kind described which is not only essential be produced at lower cost, but also a clear should have lower insertion force requirements.
Die beschriebene Aufgabe wird mit der Erfindung durch die Merkmale des Anspruchs 1 und der verschiedenen Unteransprüche gelöst.The described object is achieved with the invention by the features of Claim 1 and the various subclaims.
Die Erfindung soll nachfolgend anhand von Ausführungsbeispielen näher erläutert werden.The Invention will be explained in more detail with reference to embodiments.
Die
der Erfindung gemäße Schenkelhalsschraube
wird als durchgeschnittenes Ausführungsbeispiel
1 in
Zu
dem Ausführungsbeispiel
der Schenkelhalsschraube gehört
eine Spange
In
Zum
besseren Verständnis
soll noch die
Nachdem
oben die Spange
Die
praktische Umsetzung der Erfindung ist in einer großen Breite
möglich.
Eine derartige Abwandlung soll in
Eine
Gestaltungsalternative der Spangenspitze ist in
Mit der Erfindung wird eine Schenkelhalsschraube mit Rotationssicherung zur Verfügung gestellt, deren Spange aufgrund ihrer Flachform sehr preiswert aus Blech hergestellt werden kann, z. B. mittels eines abrasiven Wasserstrahlschnitts. Entgrat- und Nacharbeiten sind dann kaum erforderlich. Die Spange ist gemäß weiterer Erfindung an ihren Zinken mit achsparallelen Profilierungen ausgerüstet, welche gleichzeitig die vorteilhafte Senkung des Einschubkraftbedarfs als auch die angestrebte Steigerung des Rotationswiderstandes bewirken. Der Einschubkraftbedarf ist durch die vorgeschlagene Ausbildung der Gleitflächen in den Nuten der Schenkelhalsschraube und den korrespondierenden Flächen der Zinkenspangen in Gestalt gekrümmter Kufen weiter reduzierbar. Das der Erfindung gemäße Konzept verspricht eine Reduzierung von Implantatlockerungen beim Patienten und eine verbesserte Handhabbarkeit für den Chirurgen.With The invention is a femoral neck screw with anti-rotation to disposal placed, whose clasp is very inexpensive due to their flat shape Sheet metal can be produced, for. B. by means of an abrasive water jet section. Deburring and rework are then hardly necessary. The clasp is according to others Invention equipped at their tines with paraxial profiles, which at the same time the advantageous reduction of the insertion force requirement than also effect the desired increase in the rotational resistance. The insertion force requirement is due to the proposed training the sliding surfaces in the grooves of the femoral neck screw and the corresponding surfaces the tongs are further reducible in the shape of curved runners. The concept according to the invention promises a reduction of implant loosening in the patient and improved handling for the surgeon.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510037172 DE102005037172A1 (en) | 2005-08-06 | 2005-08-06 | Screw for fixing fractured femoral neck, comprises complementary clip held in longitudinal grooves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510037172 DE102005037172A1 (en) | 2005-08-06 | 2005-08-06 | Screw for fixing fractured femoral neck, comprises complementary clip held in longitudinal grooves |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005037172A1 true DE102005037172A1 (en) | 2007-02-08 |
Family
ID=37670062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510037172 Ceased DE102005037172A1 (en) | 2005-08-06 | 2005-08-06 | Screw for fixing fractured femoral neck, comprises complementary clip held in longitudinal grooves |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005037172A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021004940A1 (en) | 2021-10-01 | 2023-04-06 | Westsächsische Hochschule Zwickau, Körperschaft des öffentlichen Rechts | Fracture treatment device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19900133A1 (en) * | 1999-01-05 | 2000-07-06 | Intraplant Ag Cham | System for positioning and locking an intramedullary force carrier, in particular intramedullary nail |
DE20113345U1 (en) * | 2001-08-17 | 2003-01-02 | Tantum AG, 24534 Neumünster | Femurfrakturnagel |
WO2004089232A1 (en) * | 2003-04-09 | 2004-10-21 | Synthes Gmbh | Intramedullary nail for femur fracture fixation |
DE20320867U1 (en) * | 2002-05-14 | 2005-03-31 | Tantum Ag | Osteosynthesis device, for trochanteric and subtrochanteric femur fractures, comprises locking nail receiving femoral neck screw, and fixing device containing stop element in the form of sliding inhibiting element with a fixing body |
-
2005
- 2005-08-06 DE DE200510037172 patent/DE102005037172A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19900133A1 (en) * | 1999-01-05 | 2000-07-06 | Intraplant Ag Cham | System for positioning and locking an intramedullary force carrier, in particular intramedullary nail |
DE20113345U1 (en) * | 2001-08-17 | 2003-01-02 | Tantum AG, 24534 Neumünster | Femurfrakturnagel |
DE20320867U1 (en) * | 2002-05-14 | 2005-03-31 | Tantum Ag | Osteosynthesis device, for trochanteric and subtrochanteric femur fractures, comprises locking nail receiving femoral neck screw, and fixing device containing stop element in the form of sliding inhibiting element with a fixing body |
WO2004089232A1 (en) * | 2003-04-09 | 2004-10-21 | Synthes Gmbh | Intramedullary nail for femur fracture fixation |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021004940A1 (en) | 2021-10-01 | 2023-04-06 | Westsächsische Hochschule Zwickau, Körperschaft des öffentlichen Rechts | Fracture treatment device |
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Legal Events
Date | Code | Title | Description |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8122 | Nonbinding interest in granting licences declared | ||
R073 | Re-establishment requested | ||
R012 | Request for examination validly filed | ||
R073 | Re-establishment requested | ||
R074 | Re-establishment allowed | ||
R074 | Re-establishment allowed | ||
R012 | Request for examination validly filed |
Effective date: 20120823 |
|
R002 | Refusal decision in examination/registration proceedings | ||
R016 | Response to examination communication | ||
R125 | Request for further processing filed | ||
R126 | Request for further processing allowed | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
R073 | Re-establishment requested | ||
R074 | Re-establishment allowed | ||
R016 | Response to examination communication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |