CH647153A5 - MATERIAL FOR MEDICAL TECHNOLOGY. - Google Patents

MATERIAL FOR MEDICAL TECHNOLOGY. Download PDF

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Publication number
CH647153A5
CH647153A5 CH7003/80A CH700380A CH647153A5 CH 647153 A5 CH647153 A5 CH 647153A5 CH 7003/80 A CH7003/80 A CH 7003/80A CH 700380 A CH700380 A CH 700380A CH 647153 A5 CH647153 A5 CH 647153A5
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CH
Switzerland
Prior art keywords
fibers
nonwovens
fiber
material according
production
Prior art date
Application number
CH7003/80A
Other languages
German (de)
Inventor
Friedrich Dr Esper
Walter Dr Gohl
Original Assignee
Bosch Gmbh Robert
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Application filed by Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of CH647153A5 publication Critical patent/CH647153A5/en

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Classifications

    • 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
    • A61F2/28—Bones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
    • A61L27/44—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
    • A61L27/44—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
    • A61L27/443—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with carbon fillers
    • 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/30004—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
    • A61F2002/30009—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis differing in fibre orientations
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0028—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in fibre orientations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/08—Reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/22—Fibres of short length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2535/00—Medical equipment, e.g. bandage, prostheses, catheter

Description

Die Erfindung geht aus von einem Werkstoff für die medizinische Technik nach der Gattung des unabhängigen Patenanspruchs. Es ist bekannt, als Ersatz für menschliche Knochen, beispielsweise für das Hüftgelenk, Metallegierungen oder Aluminiumoxidkeramik sowie die Kombination dieser beiden Werkstoffe zu verwenden. Ebenso gibt es dafür bereits Metall-Kunststoffsysteme sowie neuerdings solche aus Kohlenstoff bzw. Graphit. Weiterhin ist es bekannt, dass für Stütz- bzw. Verbindungselemente bei Knochenbrüchen Metalle bzw. Metallegierungen verwendet werden. The invention is based on a material for medical technology according to the category of the independent patent claim. It is known to use as a replacement for human bones, for example for the hip joint, metal alloys or aluminum oxide ceramics and the combination of these two materials. Likewise, there are already metal-plastic systems for this, and more recently those made of carbon or graphite. Furthermore, it is known that metals or metal alloys are used for supporting or connecting elements in broken bones.

In beiden Anwendungen wirken sich die bisher verwendeten Werkstoffe in irgendeiner Weise nachteilig aus. Im Falle des Knochenersatzes wird beispielsweise beim Hüftgelenk der Femurschaft nur aus metallischen Werkstoffen hergestellt. Für die Hüftgelenkkugel verwendet man bisher vornehmlich ebenfalls Metallegierungen. Neuerdings wird diese auch aus Aluminiumoxid hergestellt. Für die Hüftgelenkpfanne verwendet man sowohl Metalle als auch Aluminiumoxid und Kunststoff oder Kombinationen dieser Werkstoffe. Zur Befestigung des Femurschaftes und der Pfanne wird bisher meistens noch Knochenzement verwendet. Dieser zersetzt sich im Laufe der Zeit, so dass die Implantate sich lokkern. Neuerdings wird eine neue Befestigungstechnik durchgeführt, die aber auch noch nicht zu einem vollen Erfolg geführt hat. Die bisherigen Misserfolge führt man hauptsächlich auf den grossen Unterschied in den Elastizitätsmoduln von Knochen und Implantatwerkstoff zurück. Der hohe Elastizitätsmodul der Implantatwerkstoffe wirkt sich auch dahingehend nachteilig aus, dass er nicht wie die Knochen harte Stösse dämpft, sondern diese ziemlich ungedämpft auf den Körper weiterleitet. Bei Metallegierungen sind auch noch nicht alle Korrosions- und Verschleissprobleme gelöst, während beim Aluminiumoxid die hohe Schlagempfindlichkeit sich als Nachteil auswirkt. In both applications, the materials used to date have an adverse effect in some way. In the case of bone replacement, for example, the hip joint of the femoral shaft is only made of metallic materials. So far, metal alloys have mainly been used for the hip joint ball. Recently, this is also made from aluminum oxide. Metals as well as aluminum oxide and plastic or combinations of these materials are used for the acetabular cup. Up to now, bone cement has mostly been used to fix the femoral shaft and the socket. This decomposes over time, so that the implants loosen up. Recently, a new fastening technology has been implemented, which has not yet led to complete success. The previous failures are mainly attributed to the large difference in the elastic moduli of bone and implant material. The high modulus of elasticity of the implant materials also has the disadvantage that it does not absorb hard impacts like the bones, but rather passes them on to the body in an undamped manner. Not all corrosion and wear problems have yet been solved with metal alloys, while with aluminum oxide the high impact sensitivity has a disadvantage.

Reine Kunststoffe haben zu geringe Zug-, Biege-, Biegewechsel- und Zeitstandsfestigkeit, um für die betrachteten Anwendungsfälle eingesetzt zu werden. Pure plastics have insufficient tensile, bending, bending fatigue strength and creep rupture strength to be used for the applications under consideration.

Aus der CH-PS 612 085 ist ein Werkstoff bekannt, der im Kern aus einem faserverstärkten duroplastischen Kunststoff als tragendem Element mit einer körperkompatiblen From CH-PS 612 085 a material is known which has a fiber-reinforced thermosetting plastic core as a load-bearing element with a body-compatible

Oberflächenschicht besteht, wobei diese Oberflächenschicht aus Polyäthylen besteht, also einem Thermoplasten, den man bisher für den körperverträglichsten Kunststoff hielt. Es hat sich jedoch zwischenzeitlich nach längeren Versuchen herausgestellt, dass Polyäthylen bezüglich der Körperverträglichkeit bei längeren Verweilzeiten im Körper keineswegs so günstig ist, wie man bisher angenommen hat. Vor allem bezüglich des Einwachsverhaltens ist festzustellen, dass bei der Verwendung von Polyäthylen als Oberfläche eines derartigen Werkstoffs bzw. Bauteils häufig eine mehr oder weniger starke Bindegewebsschicht entsteht, die als weitere Ursache für spätere Implantatlockerungen angesehen wird. Surface layer consists of, this surface layer consists of polyethylene, that is, a thermoplastic that was previously thought to be the most tolerable plastic. In the meantime, however, after longer tests, it has been found that polyethylene is by no means as favorable in terms of body tolerance with longer residence times in the body as was previously assumed. Above all with regard to the ingrowth behavior, it should be noted that when using polyethylene as the surface of such a material or component, a more or less strong connective tissue layer is often formed, which is regarded as a further cause for later implant loosening.

Der erfindungsgemässe Werkstoff mit den kennzeichnenden Merkmalen des Patentanspruchs 1 hat demgegenüber den Vorteil, dass sich nach zwölfmonatiger Implantationsdauer noch keinerlei Nachteile im Hinblick auf die Körperkompatibilität gezeigt haben. Vor allem ist ein völliges Anwachsen des Knochengewebes an das Implantat ohne Zwischenschicht festzustellen. Darüber hinaus lässt sich das Tri-azinharz gut mit Kohlenstoffasern verstärken, so dass ein hochfester, jedoch in seiner Steifigkeit variierbarer Werkstoffherstellbar ist. Dies erlaubt die Gestaltung von Endoprothesen, insbesondere Hüftgelenk-Endoprothesen nach biomechanischen Gesichtspunkten, d. h. Anpassung der Steifigkeit an die Knochensteifigkeit und Gestaltung des Verbunds so, dass im Restknochen keine zum Knochenabbau führenden, schädlichen Spannungen auftreten. The material according to the invention with the characterizing features of claim 1 has the advantage that after twelve months of implantation no disadvantages with regard to body compatibility have been shown. Above all, a complete growth of the bone tissue on the implant can be determined without an intermediate layer. In addition, the tri-azine resin can be easily reinforced with carbon fibers, so that a high-strength material that can be varied in its rigidity can be produced. This allows the design of endoprostheses, in particular hip joint endoprostheses from a biomechanical point of view, i. H. Adaptation of the stiffness to the bone stiffness and design of the bond in such a way that there are no harmful tensions in the residual bone leading to bone loss.

Triazinharze, gleichbedeutend mit Cyanatharzen, wurden bereits in faserverstärkter Form bei dem Werkstoff nach der CH-PS 612 085 als tragender Kern eingesetzt. Es war jedoch eine unter Fachleuten allgemein herrschende Meinung, dass dieses zur Klasse der Duroplaste zählende Kunstharz keine ausreichende Körperkompatibilität aufweisen würde, da Duroplaste stets Stoffe abgeben könnten, die zu einer mangelhaften Körperverträglichkeit führen würden. Es hat sich nun jedoch überraschenderweise gezeigt, dass dieses allgemein herrschende Vorurteil gegen die Duroplaste im allgemeinen und die Triazinharze im besonderen nicht zutrifft, dass vor allem mit Kohlefasern verstärktes Triazinharz vielmehr eine hervorragende Körperverträglichkeit aufweist. Triazine resins, synonymous with cyanate resins, have already been used in a fiber-reinforced form as the load-bearing core in the material according to CH-PS 612 085. However, it was a general opinion among experts that this synthetic resin, which belongs to the class of thermosets, would not have sufficient body compatibility, since thermosets could always give off substances that would lead to poor physical tolerance. It has now surprisingly been found, however, that this general prejudice against thermosets in general and triazine resins in particular does not apply, and that triazine resin reinforced with carbon fibers, in particular, has excellent physical tolerance.

Durch die in den abhängigen Patentansprüchen aufgeführten Massnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Patentanspruch 1 angegebenen Werkstoffs möglich. Besonders vorteilhaft ist es, die Verstärkung des Triazinharzes mit Kohlenstoffvliesen vorzunehmen, die eine unterschiedliche Orientierung der Fasern aufweisen. Hierdurch ist eine hervorragende Anpassung der mechanischen Eigenschaften des Werkstoffs an die Eigenschaften der Knochen möglich. The measures listed in the dependent claims allow advantageous further developments and improvements of the material specified in claim 1. It is particularly advantageous to reinforce the triazine resin with carbon nonwovens that have a different orientation of the fibers. This enables an excellent adaptation of the mechanical properties of the material to the properties of the bones.

Ein Kohlefaservlies mit unterschiedlicher Orientierung der Fasern wird mit einem Triazin-Flüssigharz, z. B. Triazin A der Firma Bayer AG, gelöst in Aceton (70 Gew.% Harz in 30 Gew.% Aceton) getränkt. Das getränkte Vlies wird dann derart zusammengerollt und geformt, dass bereits die groben Umrisse des späteren Formteils entstehen. Dieses vorgeformte Teil wird in eine beispielsweise aus zwei Teilen bestehende Form eingelegt. Dabei ist darauf zu achten, dass das Gesamtvolumen des vorgeformten Teils etwas grösser ist als das Volumen der vollständig geschlossenen Form und diese mindestens eine Öffnung aufweist, aus der das überschüssige Harz beim Zusammendrücken der Formhälften austreten kann. Die Form mit dem vorgeformten Teil wird auf ca. 160 °C erhitzt und dann werden die Formhälften zusammengedrückt. Nach dem Abkühlen ist das Triazinharz ausgehärtet, so dass nach Entnahme des Formkörpers aus der Form dieser als fest zusammenhängender Schichtwerkstoff vorliegt, dessen Oberfläche ebenso wie der Kern aus mit Kohlefasern verstärktem Triazinharz besteht. Das Material weist A carbon fiber fleece with different orientation of the fibers is coated with a triazine liquid resin, e.g. B. Triazin A from Bayer AG, dissolved in acetone (70% by weight resin in 30% by weight acetone) soaked. The soaked fleece is then rolled up and shaped in such a way that the rough outlines of the later molded part are created. This preformed part is inserted into a mold consisting, for example, of two parts. Make sure that the total volume of the preformed part is slightly larger than the volume of the fully closed mold and that it has at least one opening from which the excess resin can escape when the mold halves are pressed together. The mold with the preformed part is heated to approx. 160 ° C and then the mold halves are pressed together. After cooling, the triazine resin is cured, so that after the molded body has been removed from the mold, it is in the form of a firmly connected layer material, the surface of which, like the core, consists of triazine resin reinforced with carbon fibers. The material points

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eine Biegefestigkeit von mehr als 600 N/mm2 und einen Elastizitätsmodul von 50 000 bis 100 000 N/mm2 auf. Durch Variation der Faserlänge und der Faserorientierung in den a bending strength of more than 600 N / mm2 and a modulus of elasticity of 50,000 to 100,000 N / mm2. By varying the fiber length and the fiber orientation in the

Vliesen lassen sich diese Eigenschaften weitgehend an die Eigenschaften der Knochen anpassen. Nonwovens can largely adapt these properties to the properties of the bones.

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Claims (8)

647153 PATENTANSPRÜCHE647153 PATENT CLAIMS 1. Werkstoff für die medizinische Technik, der aus einem faserverstärkten duroplastischen Kunststoff besteht, dadurch gekennzeichnet, dass er aus faserverstärktem Triazin-Harz besteht. 1. Material for medical technology, which consists of a fiber-reinforced thermosetting plastic, characterized in that it consists of fiber-reinforced triazine resin. 2. Werkstoff nach Anspruch 1, dadurch gekennzeichnet, dass die Fasern aus Kohlenstoff bestehen. 2. Material according to claim 1, characterized in that the fibers consist of carbon. 3. Werkstoff nach Anspruch 2, dadurch gekennzeichnet, dass die Fasern in Form von Vliesen eingesetzt werden. 3. Material according to claim 2, characterized in that the fibers are used in the form of nonwovens. 4. Werkstoff nach Anspruch 2, dadurch gekennzeichnet, dass die Fasern in Form einer Kombination von Vliesen und Langfasern eingesetzt werden. 4. Material according to claim 2, characterized in that the fibers are used in the form of a combination of nonwovens and long fibers. 5. Werkstoff nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Fasern in den Vliesen eine unterschiedliche Orientierung aufweisen. 5. Material according to claim 3 or 4, characterized in that the fibers in the nonwovens have a different orientation. 6. Verwendung von Werkstoffen gemäss Patentanspruch 1 zur Herstellung von Implantaten. 6. Use of materials according to claim 1 for the production of implants. 7. Verwendung nach Anspruch 6, gekennzeichnet durch die Herstellung von Knochenersatzwerkstoff, insbesondere von Endoprothesen. 7. Use according to claim 6, characterized by the production of bone substitute material, in particular endoprostheses. 8. Verwendung nach Anspruch 6, gekennzeichnet durch die Herstellung von implantierbaren Stütz- oder Verbindungselementen. 8. Use according to claim 6, characterized by the production of implantable support or connecting elements.
CH7003/80A 1979-10-12 1980-09-18 MATERIAL FOR MEDICAL TECHNOLOGY. CH647153A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792941369 DE2941369A1 (en) 1979-10-12 1979-10-12 MATERIAL FOR MEDICAL TECHNOLOGY

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CH647153A5 true CH647153A5 (en) 1985-01-15

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CH7003/80A CH647153A5 (en) 1979-10-12 1980-09-18 MATERIAL FOR MEDICAL TECHNOLOGY.

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JP (1) JPS5660553A (en)
CH (1) CH647153A5 (en)
DE (1) DE2941369A1 (en)
FR (1) FR2466982A1 (en)
GB (1) GB2060489B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838568A1 (en) * 1988-11-14 1990-05-17 Inst Textil & Faserforschung Joint prosthesis
DE4230339A1 (en) * 1992-09-10 1994-03-17 Man Ceramics Gmbh Implant

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301415A1 (en) * 1983-01-18 1984-07-19 Robert Bosch Gmbh, 7000 Stuttgart Endoprosthesis
DE3324256A1 (en) * 1983-07-06 1985-01-17 Robert Bosch Gmbh, 7000 Stuttgart ENDOPROTHESIS MADE OF FIBER-REINFORCED DUROPLASTIC SYNTHETIC RESIN AND METHOD FOR THE PRODUCTION THEREOF
US4655777A (en) * 1983-12-19 1987-04-07 Southern Research Institute Method of producing biodegradable prosthesis and products therefrom
DE3524020A1 (en) * 1985-03-30 1986-10-02 M A N Technologie GmbH, 8000 München METHOD FOR TREATING BONE REPLACEMENT IMPLANTS
JPS61226038A (en) * 1985-03-30 1986-10-07 マン　テクノロジー　ゲーエムベーハー Production of substitute bone implant
US4738681A (en) * 1985-07-10 1988-04-19 Harrington Arthritis Research Center Femoral-joint prosthetic device
DE3942769A1 (en) * 1989-12-23 1991-06-27 Bosch Gmbh Robert Medical implant for endoprosthesis, esp. ball and socket joints - comprises triazine resin matrix contg. carbon fibres and alumina

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603456C2 (en) * 1976-01-30 1984-04-05 Robert Bosch Gmbh, 7000 Stuttgart Process for the production of a bone implant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838568A1 (en) * 1988-11-14 1990-05-17 Inst Textil & Faserforschung Joint prosthesis
DE4230339A1 (en) * 1992-09-10 1994-03-17 Man Ceramics Gmbh Implant

Also Published As

Publication number Publication date
JPS5660553A (en) 1981-05-25
FR2466982A1 (en) 1981-04-17
FR2466982B1 (en) 1984-07-20
GB2060489B (en) 1984-04-04
GB2060489A (en) 1981-05-07
JPS6357064B2 (en) 1988-11-10
DE2941369A1 (en) 1981-04-23

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