DE2941369A1 - MATERIAL FOR MEDICAL TECHNOLOGY - Google Patents

MATERIAL FOR MEDICAL TECHNOLOGY

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Publication number
DE2941369A1
DE2941369A1 DE19792941369 DE2941369A DE2941369A1 DE 2941369 A1 DE2941369 A1 DE 2941369A1 DE 19792941369 DE19792941369 DE 19792941369 DE 2941369 A DE2941369 A DE 2941369A DE 2941369 A1 DE2941369 A1 DE 2941369A1
Authority
DE
Germany
Prior art keywords
fibers
material according
fiber
reinforced
nonwovens
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
Application number
DE19792941369
Other languages
German (de)
Inventor
Friedrich Dr. 7250 Leonberg Esper
Walter Dr. 7031 Aidlingen Gohl
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19792941369 priority Critical patent/DE2941369A1/en
Priority to CH7003/80A priority patent/CH647153A5/en
Priority to FR8021435A priority patent/FR2466982A1/en
Priority to GB8032794A priority patent/GB2060489B/en
Priority to US06/195,870 priority patent/US4356571A/en
Priority to JP14215880A priority patent/JPS5660553A/en
Publication of DE2941369A1 publication Critical patent/DE2941369A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61F2/28—Bones
    • 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 or catheter

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Materials Engineering (AREA)
  • Dermatology (AREA)
  • Composite Materials (AREA)
  • Medicinal Chemistry (AREA)
  • Epidemiology (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials For Medical Uses (AREA)
  • Reinforced Plastic Materials (AREA)
  • Nonwoven Fabrics (AREA)

Description

57935793

Pf/Jä 10.10.1979Pf / Jä 10.10.1979

Robert Bosch GmbH, 7000 Stuttgart 1Robert Bosch GmbH, 7000 Stuttgart 1 Werkstoff für die medizinische TechnikMaterial for medical technology Stand der TechnikState of the art

Die Erfindung geht aus von einem Werkstoff für die medizinische Technik nach der Gattung des Hauptanspruchs. Es ist bekannt, als Ersatz für menschliche Knochen, beispielsweise für das Hüftgelenk, Metallegierungen oder Aluriiniumoxidkeramik sowie die Kombination dieser beiden Werkstoffe zu verwenden. Ebenso gibt es dafür bereits >ietall-Kunststoff systeme sowie neuerdings solche aus Kohlenstoff bzw. Graphit. Weiterhin ist es bekannt, daß für Stütz- dzw. Verbindungselemente bei Knochenbrüchen Metalle bzw. Metallegierungen verwendet werden.The invention is based on a material for medical technology according to the preamble of the main claim. It is known to use metal alloys as a replacement for human bones, for example for the hip joint or aluminum oxide ceramics and the combination of these two materials. There is also for it already> ietall plastic systems and more recently such made of carbon or graphite. Furthermore, it is known that for support dzw. Fasteners for broken bones Metals or metal alloys are used.

In beiden Anwendungen wirken sich die bisher verwendeten Werkstoffe in irgendeiner Weise nachteilig aus. Im Falle des Knochenersatzes wird beispielsweise beim Hüftgelenk der Feinurschaft nur aus metallischen Werkstoffen hergestellt. Für die Küftgelenkkugel verwendet man bisher vornehmlich ebenfalls Metallegierungen. Neuerdings wird diese auch aus Aluminiumoxid hergestellt. Für die Hüftgelenkpfar.ne 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 Im-In both applications, the materials used hitherto have some disadvantageous effect. In the event of of the bone replacement, for example in the hip joint of the Feinurschaft, is made only of metallic materials. So far, one has used for the joint ball mainly also metal alloys. Recently this has also been made from aluminum oxide. For the hip joint parishes one uses both metals and aluminum oxide and plastic or combinations of these Materials. Until now, bone cement has mostly been used to secure the femoral shaft and the socket. This decomposes over time, so that the im-

1 30017/03091 30017/0309

plantate sich lockern. 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 Elastiztitätsmodul der Implantatwerkstoffe wirkt sich auch dahingegend 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.plans to loosen. Recently there is a new fastening technique carried out, which has not yet led to a complete success. The previous failures one leads mainly to the big difference in the modulus of elasticity of bone and implant material return. The high modulus of elasticity of the implant materials also has a disadvantageous effect, that it does not dampen hard shocks like the bones, but rather transmits them to the body rather undamped. In the case of metal alloys, not all corrosion and wear problems have yet been solved, whereas in the case of aluminum oxide the high impact sensitivity is a disadvantage.

Reine Kunststoffe haben zu geringe Zug-, Biege-, Biegewechsel- und Zeitstandsfestigkeit, um für die betrachteten Anwendungsfälle eingesetzt zu werden.Pure plastics have too little tensile, flexural, alternating bending and creep strength to be considered Use cases to be used.

Aus der Hauptanmeldung ist ein Werkstoff bekannt, der im Kern aus einem faserverstärkten duroplastischen Kunststoff als tragendem Element mit einer körperkompatiblen 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 Bindesgewebsschicht entsteht, die als weitere Ursache für spätere Implantatlockerungen angesehen wird.A material is known from the main application, which is in the Core made of a fiber-reinforced thermosetting plastic as a load-bearing element with a body-compatible surface layer consists, this surface layer consists of polyethylene, so a thermoplastic, the was previously thought to be the most body-friendly plastic. However, it has meanwhile been long Experiments have shown that polyethylene is compatible with the body at longer residence times is by no means as favorable in the body as previously assumed. Especially with regard to the ingrowth behavior it should be noted that when using polyethylene as the surface of such a material or component often a more or less thick layer of connective tissue arises, which is another cause of later Implant loosening is considered.

- 3 130017/0309 - 3 130017/0309

29/.1369 -/- 57 9 3 29 / .1369 - / - 57 9 3

Vorteile der nr-f induneAdvantages of the nr-f indune

Der erfindungsgemäße Werkstoff mit den kennzeichnenden Merkmalen des Hauptanspruchs 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 Triazinharz gut mit Kohlenstoffasern verstärken, so daß ein hochfester, jedoch in seiner Steifigkeit variierbarer Werkstoff herstellbar ist. Dies erlaubt die Gestaltung von Endoprothesen, insbesondere Hüftgelenk-Endoprothesen nach bicmechanischen Gesichtspunkten, d. h. Anpassung der Steifigkeit an die Knochensteifigkeit und Gestaltung des Verbunds so, daß im Restknochen keine zum Knochenabtau führenden, schädlichen Spannungen auftreten. The material according to the invention with the characteristic Features of the main claim has the advantage that after twelve months of implantation have not yet shown any disadvantages in terms of body compatibility. Above all is a complete Growth of the bone tissue on the implant without an intermediate layer to be determined. In addition, the Reinforce triazine resin well with carbon fibers so that a high-strength, but variable in its stiffness material can be produced. This allows the design of endoprostheses, in particular hip joint endoprostheses according to bicechanical points of view, d. H. Adaptation of the stiffness to the bone stiffness and Design of the composite in such a way that no harmful tensions which lead to bone thawing occur in the remaining bone.

Triazinharze, gleichbedeutend mit Cyanatharzen, wurden bereits in faserverstärkter Form bei dem Werkstoff nach der Hauptanmeldung 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 nur. 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 Kör-Derverträglich/.eit aufweist.Triazine resins, synonymous with cyanate resins, were already in fiber-reinforced form with the material the main application as the supporting core. It However, it was a generally prevailing opinion among experts that this belongs to the class of thermosets Synthetic resin would not have sufficient body compatibility, since thermosets could always release substances, which lead to poor body tolerance would. It just has. however, surprisingly shown that this generally prevailing prejudice against the thermosets in general and the triazine resins in the In particular, it is not true that, above all, triazine resin reinforced with carbon fibers has an excellent body tolerance having.

130017/0309130017/0309

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Kauptanspruch 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 subclaims are advantageous developments and improvements of the material specified in the claim is possible. It is particularly advantageous to reinforce the triazine resin to be carried out with carbon fleece, which have a different orientation of the fibers. This results in an excellent adaptation of the mechanical properties of the material to the properties the bones possible.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Ein Kohlefaservlies mit unterschiedlicher Orientierung der Fasern wird mit einem Triazin-Flüssigharz , z. E. 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. l60 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 eine Biegefestigkeit von mehr als 600 N/mm und einen Elastizitätsmodul von 50 000 bisA carbon fiber fleece with different orientations the fibers are coated with a triazine liquid resin, e.g. E. Triazine A from Bayer AG, _ dissolved in acetone (70 wt. Resin impregnated in 30 wt.% Acetone). The soaked fleece is then rolled up and shaped in such a way that already the rough outlines of the later molded part are created. This preformed part is made into an example two-part mold inserted. Care must be taken that the total volume of the preformed part is slightly larger than the volume of the completely closed mold and this has at least one opening, from which the excess resin can escape when the mold halves are pressed together. The shape with the preformed Part is heated to approx. 160 C and then the mold halves are pressed together. After cooling down, that's Triazine resin cured, so that after removal of the molding from the mold it is firmly connected Layer material is present, the surface of which, like the core, is made of triazine resin reinforced with carbon fibers consists. The material has a flexural strength of more than 600 N / mm and a modulus of elasticity of 50,000 to

ρ
100 COC K/mm auf. Durch Variation der Faserlänge und der Faserorientierung in den Vliesen lassen sich diese Eigenschaften weitgehend an die Eigenschaften der Knochen anpassen.ρ
100 COC K / mm. By varying the fiber length and the fiber orientation in the nonwovens, these properties can largely be adapted to the properties of the bones.

130017/0309130017/0309

Claims (1)

Pf/Ja IG.10. 1979Pf / Yes IG.10. 1979 Robert Bosch G-rr.bK, 7000 Stuttgart 1Robert Bosch G-rr.bK, 7000 Stuttgart 1 AnsprücheExpectations für die medizinische Technik, der im Kern aus eine™, faserverstärkten duroplastischen Kunststoff als tragender. Element mit einer korperkompatiblen, faserverstärkten Oberflächenschicht besteht, nach Patent ... (Patentanmeldung P 26 03 ^56.0), dadurch gekennzeichnet, daß Kern und Oberflächenschicht aus faserverstärk-en Triazin-Harz bestehen.for medical technology, the core of which is made of a ™, fiber-reinforced thermosetting plastic as a supporting one. Element with a body-compatible, fiber-reinforced surface layer, according to Patent ... (Patent application P 26 03 ^ 56.0), characterized in that the core and surface layer fiber-reinforced triazine resin. 2. Werkstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Fasern aus Kohlenstoff oder anderen hochfesten Stoffen r.it hohem Elastizitätsmodul bestehen.2. Material according to claim 1, characterized in that that the fibers consist of carbon or other high-strength materials with a high modulus of elasticity. 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. ü. 'Werkstoff nach Anspruch 2, dadurch gekennzeichnet, daß die Fasern in Form einer Kombination von Vliesen und lsn"fasern eingesetzt werden. ü. A material according to claim 2, characterized in that the fibers are used in the form of a combination of nonwovens and insulated fibers. 130017/0309 - 2 -130017/0309 - 2 - 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 that the fibers in the nonwovens have a different orientation. 6. Verwendung von Triazin-Harzen für die Herstellung von Knochenersatzwerkstoff, insbesondere von Endoprothesen. 6. Use of triazine resins for manufacture of bone substitute material, in particular of endoprostheses. 7. Verwendung von Triazin-Harzen für die Herstellung von implantierbar en Stütz- oder Verbindungselemente^7. Use of triazine resins for the production of implantable supporting or connecting elements ^ 1 30017/03091 30017/0309
DE19792941369 1979-10-12 1979-10-12 MATERIAL FOR MEDICAL TECHNOLOGY Ceased DE2941369A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19792941369 DE2941369A1 (en) 1979-10-12 1979-10-12 MATERIAL FOR MEDICAL TECHNOLOGY
CH7003/80A CH647153A5 (en) 1979-10-12 1980-09-18 MATERIAL FOR MEDICAL TECHNOLOGY.
FR8021435A FR2466982A1 (en) 1979-10-12 1980-10-07 RAW MATERIAL USED IN MEDICAL TECHNOLOGY FOR BONE PROSTHESES
GB8032794A GB2060489B (en) 1979-10-12 1980-10-10 Material for medical technology
US06/195,870 US4356571A (en) 1979-10-12 1980-10-10 Prosthetic device
JP14215880A JPS5660553A (en) 1979-10-12 1980-10-13 Material for medical technique

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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DE2941369A1 true DE2941369A1 (en) 1981-04-23

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DE19792941369 Ceased DE2941369A1 (en) 1979-10-12 1979-10-12 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 (5)

* 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
EP0137115A1 (en) * 1983-07-06 1985-04-17 Robert Bosch Gmbh Endoprosthesis of fibre-reinforced duroplastic synthetic resin and method of manufacture
DE3524020A1 (en) * 1985-03-30 1986-10-02 M A N Technologie GmbH, 8000 München METHOD FOR TREATING BONE REPLACEMENT IMPLANTS
DE3838568A1 (en) * 1988-11-14 1990-05-17 Inst Textil & Faserforschung Joint prosthesis
AT397616B (en) * 1989-12-23 1994-05-25 Bosch Gmbh Robert IMPLANT MATERIAL FOR MEDICAL TECHNOLOGY AND USE THEREOF

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4655777A (en) * 1983-12-19 1987-04-07 Southern Research Institute Method of producing biodegradable prosthesis and products therefrom
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
DE4230339A1 (en) * 1992-09-10 1994-03-17 Man Ceramics Gmbh Implant

Citations (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

Patent Citations (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 (5)

* 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
EP0137115A1 (en) * 1983-07-06 1985-04-17 Robert Bosch Gmbh Endoprosthesis of fibre-reinforced duroplastic synthetic resin and method of manufacture
DE3524020A1 (en) * 1985-03-30 1986-10-02 M A N Technologie GmbH, 8000 München METHOD FOR TREATING BONE REPLACEMENT IMPLANTS
DE3838568A1 (en) * 1988-11-14 1990-05-17 Inst Textil & Faserforschung Joint prosthesis
AT397616B (en) * 1989-12-23 1994-05-25 Bosch Gmbh Robert IMPLANT MATERIAL FOR MEDICAL TECHNOLOGY AND USE THEREOF

Also Published As

Publication number Publication date
JPS6357064B2 (en) 1988-11-10
GB2060489A (en) 1981-05-07
GB2060489B (en) 1984-04-04
JPS5660553A (en) 1981-05-25
CH647153A5 (en) 1985-01-15
FR2466982A1 (en) 1981-04-17
FR2466982B1 (en) 1984-07-20

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