DE2920223A1 - Osteo-synthesis plate shaping process - involves storage of unhardened plate for shaping and hardening after precise diagnosis of injuries - Google Patents
Osteo-synthesis plate shaping process - involves storage of unhardened plate for shaping and hardening after precise diagnosis of injuriesInfo
- Publication number
- DE2920223A1 DE2920223A1 DE19792920223 DE2920223A DE2920223A1 DE 2920223 A1 DE2920223 A1 DE 2920223A1 DE 19792920223 DE19792920223 DE 19792920223 DE 2920223 A DE2920223 A DE 2920223A DE 2920223 A1 DE2920223 A1 DE 2920223A1
- Authority
- DE
- Germany
- Prior art keywords
- geometry
- bone
- press
- plate
- mold
- 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.)
- Withdrawn
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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
-
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8863—Apparatus for shaping or cutting osteosynthesis equipment by medical personnel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2/30965—Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurology (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
Anpassen von Osteosyntheseplatten aus Verbund- Adaptation of osteosynthesis plates made of composite
werkstoff "Prepreg," an die individuelle Knochengeometrie des Patienten Bei der klinisch-chirurgischen Versorgung von Frakturen an Röhrenknochen mittels längsverlaufender Osteosyntheseplatten ist es nötig, daß diese sowohl in ihrer axialen wie radialen Formgebung, d. h. in ihrer Länge und Quergeometrie, individuell angepaßt werden können. Hierbei ist besonders auf ein möglichst gesamtflächiges Anliegen der Osteosynthese platte am Knochen zu achten. Nur dadurch kann unerwünschte Punkt- bzw. Spitzenbelastung vermieden und die Bruchgefahr eingeschränkt werden. material "prepreg," to the individual bone geometry of the patient In the clinical-surgical treatment of fractures on long bones using longitudinal osteosynthesis plates, it is necessary that these both in their axial like radial shaping, d. H. individually adapted in their length and transverse geometry can be. It is particularly important to ensure that the area is as large as possible Pay attention to the osteosynthesis plate on the bone. This is the only way to avoid undesirable Point- or peak loads are avoided and the risk of breakage is reduced.
Osteosyntheseplatten aus Metall können mittels Verbiegen der örtlichen Knochengeometrie angepaßt werden.Metal osteosynthesis plates can be bent by bending the local Bone geometry can be adapted.
Dies ist bei ausgehärteten Verbundwerkstoffosteosyntheseplatten nicht möglich. Somit würde eine Vielfalt von vorgeforniten Verbundwerkstoffosteosntheseplatten den entsprechend verschiedenen Enochenformen benötigt.This is not the case with cured composite material osteosynthesis plates possible. Thus, a variety of preformed composite osteosthetic plates would be produced the different Enochen forms required.
Aufgabe der irXindung ist es, hier Abhilfe zu schaffen, um einerseits mit einer geringen Zahl verschiedener Typen von Verbundwekstoffosteosyntheseplatten auskommen zu können, andererseits trotzdem die Möglichkeit zu geben, eine genaue Anpassung an die jeweiligen tatsächlichen Veriiäitnisse gewährleisten zu können.The task of finding it is to remedy this, on the one hand with a small number of different types of composite osteosynthesis plates to be able to get along, on the other hand, to still be able to give an exact To be able to guarantee adaptation to the respective actual conditions.
Der Lösung dieser Aufgabe dienen die Merkmale der Patentansprüche.The features of the claims serve to solve this problem.
Die vorgefertigten Osteosyntheseplatten sollen also aus einem Verbundwerkstoffprepreg, d. h. nicht ausgehärtetem Verbundwerkstoff, bestehen, so daß diese, nachdem eine Diagnose gestellt wurde und die Xnochengeometrie des betroffenen knochens bekannt ist (z. 3.The prefabricated osteosynthesis plates should therefore be made from a composite prepreg, d. H. uncured composite material, so that these, after this a diagnosis has been made and the bone geometry of the affected bone known is (e.g. 3.
mittels Röntgenaufaahmen), von Fall zu Fall in eine Presse oder Form der gewünschten Geometrie entsprechend eingespannt und ausgehärtet werden können.by means of x-rays), on a case-by-case basis in a press or mold can be clamped and cured according to the desired geometry.
Ein weiterer Vorteil der Erfindung ist, daß eine Aushärtungsprozedur bei Temperaturen, die über 800G bzw. 120°C liegen, durchgeführt werden kann, wodurch eine gute Sterilisation gewährleistet ist.Another advantage of the invention is that a curing procedure at temperatures above 800G or 120 ° C, can be carried out, whereby good sterilization is guaranteed.
Dies hat rz Bo'ge, daß die logistische Handhabung (Transport, Lagerung usw.) wesentlich erleichtert wird.This has rz Bo'ge that the logistical handling (transport, storage etc.) is made much easier.
Die Erfindung ist nachfolgend anhand der Zeichnung näher erläutert.The invention is explained in more detail below with reference to the drawing.
In der Zeichnung zeigen Fig. 1 in schematischer Darstellung eine erfindungsgemäß einzusetzende Gesamtanordnung und Fig. 2 einen schematisch dargestellten Querschaitt durch eine Anordnung gemäß Fig. 1.In the drawing, FIG. 1 shows a schematic representation of a device according to the invention overall arrangement to be used and Fig. 2 is a schematically illustrated Cross section through an arrangement according to FIG. 1.
In einem Gestell 1 ist eine Vielzahl von einzelnen Haltern angeordnet, von denen jeder aus einem oben offenen ästen 2 und einem an dem Kasten 2 angelenkten Deckel 3 besteht, mit dem der Easten 2 verschließbar ist. Jeder Kasten hat an jedem Ende ein mit einem Innengewinde versehenes Lagerauge 4 bzw. 5, und mit diesen Lageraugen ist der jeweilige Halter 2, 5 auf drehbaren Spindeln 6, 7 gelagert. Durch Drehen der Spindeln 6, 7 ist jeder Halter in vertikaler Richtung x verstellbar und alle Halter der Vorrichtung sind in dieser Richtung relativ zueinander verstellbar. Durch Ausgestaltung der mageraugen 4,5 ist jeder Halter 2, 5 auch in Grenzen um seine Längsachse in Richtung y verschwenkbar.A large number of individual holders are arranged in a frame 1, each of which consists of an open-topped branches 2 and one hinged to the box 2 Lid 3 consists with which the branches 2 can be closed. Each box has on each one End of an internally threaded bearing eye 4 or 5, and with these bearing eyes the respective holder 2, 5 is mounted on rotatable spindles 6, 7. Go berserk of the spindles 6, 7, each holder is adjustable in the vertical direction x and all Holders of the device are adjustable relative to one another in this direction. By Design of the lean eyes 4.5, each holder 2, 5 is also within limits around its The longitudinal axis can be pivoted in the y direction.
Im Kasten 2 jedes Halters ist ein Schieber 8 in Richtung des Pfeiles z verstellbar, so daß die Schieber 8 aller Ealter 2, 3 relativ zueinander in Richtung des Pfeiles z gegeneinander verstellbar sind.In the box 2 of each holder is a slide 8 in the direction of the arrow z adjustable so that the slide 8 of all Ealter 2, 3 relative to each other in the direction of the arrow z are mutually adjustable.
In jedem Schieber ist ein sogenannter Prepreg 9 mit einem Teil seiner Länge einlegbar, wobei die Spiellosigkeit durch beigepackte Püllplatten 10, 11 entsprechend der Kontur des Prepregs9 gewährleistet wird.In each slide is a so-called prepreg 9 with part of it Length insertable, the backlash by the enclosed Püllplatten 10, 11 accordingly the contour of the prepreg9 is guaranteed.
Bei dem Prepreg handelt es sich um ein Halbzeug, das entsprechend dem Einsatzzweck, d. h der Kontur der miteinander zu verbindenden Knochen, in etwa angepaßt ist. Es handelt sich um einen noch nicht ausgehärteten, durch Fasern oder ein Fasergewebe verstärkten Kunststoff. Als Fasern können beispielsweise Kohlenstoffasern, Metallfasern, Glasfasern oder Kevlarfasern Anwendung finden Als Kunststoff kann z, B.The prepreg is a semi-finished product that is accordingly the purpose of use, d. h the contour of the bones to be connected, roughly is adapted. It is a not yet hardened, by fibers or a fiber fabric reinforced plastic. As fibers, for example, carbon fibers, Metal fibers, glass fibers or Kevlar fibers can be used as plastic z, B.
Epoxidharz Anwendung finden Für den Einsatz des Prepregs wird die Kontur der Knochenhälften, die miteinander verheilen sollen, geröntgt. Dann wird das grob konturierte Prepreg in die Vorrichtung eingelegt, wobei die Anzahl der benutzten Halter der Länge des Prepregs entspricht.Find epoxy resin application For the use of the prepreg, the X-rayed contour of the halves of the bones that are supposed to heal together. Then it will be the roughly contoured prepreg is placed in the device, with the number of The holder used corresponds to the length of the prepreg.
Dann werden die Halter entsprechend der mit der Röntgenaufnahne ermittelten Kontur durch Verstellen in den Richtungen x, y und z so ausgerichtet, daß die gewünschte bzw. notwendige Kontur erhalten wird. Hierauf wird dem Prepreg Wärme zugeführt, damit es aushärtet und die in der Vorrichtung übertragene Kontur auch nach der Rerausnahme des nunmehr zur Prothese gewordenen Prepregs stehenbleibt. Die Wärmertifuhr kann dadurch erfolgen, daß die lialter unmittelbar heizbar sind oder daß die Vorrichtung ganz oder partiell in einem Ofen eingestellt wird.Then the holders are determined in accordance with the X-ray exposure Contour by adjusting aligned in the directions x, y and z, that the desired or necessary contour is obtained. This is where the prepreg Heat supplied so that it hardens and the contour transferred in the device also remains after the removal of the prepreg, which has now become a prosthesis. The heat transfer can take place in that the lialter can be heated directly or that the device is completely or partially set in an oven.
Zum Verstellen des Schiebers in jedem Halter ragt der Schieber mit einer Nase 12 durch einen Schlitz im Boden des jeweiligen Kastens, und diese Nase ist mit einer Verstellvorrichtung 13 verbunden.To adjust the slide in each holder, the slide protrudes with it a nose 12 through a slot in the bottom of the respective box, and this nose is connected to an adjusting device 13.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792920223 DE2920223A1 (en) | 1979-05-18 | 1979-05-18 | Osteo-synthesis plate shaping process - involves storage of unhardened plate for shaping and hardening after precise diagnosis of injuries |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792920223 DE2920223A1 (en) | 1979-05-18 | 1979-05-18 | Osteo-synthesis plate shaping process - involves storage of unhardened plate for shaping and hardening after precise diagnosis of injuries |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2920223A1 true DE2920223A1 (en) | 1980-11-27 |
Family
ID=6071148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19792920223 Withdrawn DE2920223A1 (en) | 1979-05-18 | 1979-05-18 | Osteo-synthesis plate shaping process - involves storage of unhardened plate for shaping and hardening after precise diagnosis of injuries |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2920223A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4506681A (en) * | 1981-11-11 | 1985-03-26 | South African Inventions Development Corporation | Surgical implant |
EP0284530A1 (en) * | 1987-03-27 | 1988-09-28 | César Razafindratsiva | Spinal plate |
WO1991007139A1 (en) * | 1989-11-09 | 1991-05-30 | Ian Leonard | Producing prostheses |
EP0637437A1 (en) * | 1993-05-14 | 1995-02-08 | SMITH & NEPHEW RICHARDS, INC. | Composite spinal apparatus |
EP0720835A2 (en) * | 1992-06-15 | 1996-07-10 | Medicon e.G. | Surgical system |
US7947207B2 (en) | 2005-04-12 | 2011-05-24 | Abbott Cardiovascular Systems Inc. | Method for retaining a vascular stent on a catheter |
-
1979
- 1979-05-18 DE DE19792920223 patent/DE2920223A1/en not_active Withdrawn
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4506681A (en) * | 1981-11-11 | 1985-03-26 | South African Inventions Development Corporation | Surgical implant |
EP0284530A1 (en) * | 1987-03-27 | 1988-09-28 | César Razafindratsiva | Spinal plate |
FR2612762A1 (en) * | 1987-03-27 | 1988-09-30 | Grp Rech Etu Bionique | RACHIS PLATE |
WO1991007139A1 (en) * | 1989-11-09 | 1991-05-30 | Ian Leonard | Producing prostheses |
US5298115A (en) * | 1989-11-09 | 1994-03-29 | Ian Leonard | Producing prostheses |
EP0720835A2 (en) * | 1992-06-15 | 1996-07-10 | Medicon e.G. | Surgical system |
EP0720835A3 (en) * | 1992-06-15 | 1996-09-18 | Medicon E G | Surgical system |
EP0637437A1 (en) * | 1993-05-14 | 1995-02-08 | SMITH & NEPHEW RICHARDS, INC. | Composite spinal apparatus |
US7947207B2 (en) | 2005-04-12 | 2011-05-24 | Abbott Cardiovascular Systems Inc. | Method for retaining a vascular stent on a catheter |
US8221112B2 (en) | 2005-04-12 | 2012-07-17 | Abbott Cardiovascular Systems, Inc. | Method for retaining a vascular stent on a catheter |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAM | Search report available | ||
OC | Search report available | ||
8127 | New person/name/address of the applicant |
Owner name: M.A.N. MASCHINENFABRIK AUGSBURG-NUERNBERG AG, 8000 |
|
8139 | Disposal/non-payment of the annual fee |