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WO1990013266A1 - Process for conforming osteosynthesis plates - Google Patents

Process for conforming osteosynthesis plates Download PDF

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Publication number
WO1990013266A1
WO1990013266A1 PCT/EP1990/000658 EP9000658W WO9013266A1 WO 1990013266 A1 WO1990013266 A1 WO 1990013266A1 EP 9000658 W EP9000658 W EP 9000658W WO 9013266 A1 WO9013266 A1 WO 9013266A1
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WO
WIPO (PCT)
Prior art keywords
osteosynthesis
radiation
heating
fibers
bone
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
PCT/EP1990/000658
Other languages
German (de)
French (fr)
Inventor
Erich Wintermantel
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.)
Aesculap AG
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Aesculap AG
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Filing date
Publication date
Application filed by Aesculap AG filed Critical Aesculap AG
Publication of WO1990013266A1 publication Critical patent/WO1990013266A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/12—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
    • A61L31/125—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
    • A61L31/126—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix containing carbon fillers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • A61B17/8085—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with pliable or malleable elements or having a mesh-like structure, e.g. small strips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0855—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using microwave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts

Definitions

  • the osteosynthesis plate 5 consists of a thermoplastic material which can be deformed at a temperature slightly above body temperature, but which is dimensionally stable at body temperature.
  • a material can be, for example, a modified methacrylate, in particular a polyethyl methacrylate, which can be deformed at a temperature of approximately 50 ° C.
  • Reinforcing fibers 9 are embedded in the plastic mass, for example continuous carbon fibers, which on the one hand reinforce the osteosynthesis.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Vascular Medicine (AREA)
  • Toxicology (AREA)
  • Neurology (AREA)
  • Chemical & Material Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Epidemiology (AREA)
  • Surgical Instruments (AREA)

Abstract

In a process for conforming thermoplastic osteosynthesis plates (5) in which reinforcing fibres (9) are embedded, the thermoplastic is deformed, even in the body, by heating without altering the osteosynthesis plate (5). To this end, the osteosynthesis plate (5) is irradiated with electromagnetic radiation which is converted to heat in the irradiated fibres (9). The plastic surrounding the fibres (9) is thereby heated until it becomes deformable.

Description

B E S C H R E I B U N G DESCRIPTION

Verfahren zur Formanpassung von OsteosyntheseplattenProcess for shape adaptation of osteosynthesis plates

Die Erfindung betrifft ein Verfahren zur Formanpassung von Osteosyntheseplatten, die aus einem thermoplastischen Kunst¬ stoff bestehen und eingelagerte Verstärkungsfasern enthalten. Osteosyntheseplatten werden üblicherweise aus Metall herge¬ stellt, so daß sie formstabil sind und die zum Zusammenhalten von zu fixierenden Knochenfragmenten notwendigen Haltekräfte aufbringen können. Obwohl sich diese Knochenplatten weit¬ gehend bewährt haben, ergibt sich doch eine besondere Schwierig¬ keit dadurch, daß diese Knochenplatten aufgrund ihrer Formsta¬ bilität nicht optimal an die Außenkontur der jeweiligen Knochen¬ fragmente angepaßt werden können.The invention relates to a method for adapting the shape of osteosynthesis plates which consist of a thermoplastic and contain embedded reinforcing fibers. Osteosynthesis plates are usually made of metal so that they are dimensionally stable and can exert the holding forces necessary for holding together bone fragments to be fixed. Although these bone plates have largely proven themselves, a particular difficulty arises from the fact that these bone plates cannot be optimally adapted to the outer contour of the respective bone fragments due to their shape stability.

Es ist daher bereits bekannt, Knochenplatten aus thermoplasti¬ schen Kunststoffen herzustellen und gegebenenfalls mit Fasern zu verstärken (DE-OS 32 40 468) . Diese Knochenplatten können durch Erwärmung auf eine oberhalb der Körpertemperatur lie¬ gende Temperatur verformt werden, so daß es möglich ist, diese Knochenplatten genau der Form der miteinander zu verbindenden Knochenfragmente anzupassen. Bei bekannten thermoplastischen Knochenplatten dieser Art erfolgte die Erwärmung beispiels¬ weise durch in den thermoplastischen Kunststoff eingebettete Kohlenstoffasern, die über die Enden der Knochenplatten heraushängen und die zum Zwecke der Erwärmung nach Anlegen einer Spannung zwischen den Enden der aus der Knochenplatte heraushängenden Fasern von einem Strom durchflössen werden können. Sobald die Erwärmung so ausreichend ist, daß die Knochenplatten verformt werden können, werden diese entweder unmittelbar am Knochen oder an einem Modell in die gewünschte Form gebracht. Daran anschließend müssen die heraushängenden Fasern abgeschnitten werden, eine weitere Verformung ist nicht mehr möglich.It is therefore already known to produce bone plates from thermoplastic plastics and, if necessary, to reinforce them with fibers (DE-OS 32 40 468). These bone plates can be deformed by heating to a temperature above the body temperature, so that it is possible to adapt these bone plates exactly to the shape of the bone fragments to be joined together. In known thermoplastic bone plates of this type, the heating was carried out, for example, by embedded in the thermoplastic Carbon fibers which hang over the ends of the bone plates and which can be flowed through by a current for the purpose of heating after applying a voltage between the ends of the fibers hanging out of the bone plate. As soon as the heating is sufficient so that the bone plates can be deformed, they are brought into the desired shape either directly on the bone or on a model. Then the fibers hanging out must be cut off, further deformation is no longer possible.

•Es ist Aufgabe der Erfindung, ein gattungsgemäßes Verfahren so zu verbessern, daß die Knochenplatten gegebenenfalls an der Anlagestelle am Körper selbst zur Verformung erwärmt werden können, ohne daß anschließend nach abgeschlossener Verformung eine Veränderung an den Knochenplatten notwendig ist.• It is an object of the invention to improve a generic method so that the bone plates can optionally be heated at the abutment on the body itself for deformation, without a change in the bone plates being necessary after the deformation is complete.

Diese Aufgabe wird bei einem Verfahren der eingangs beschrie¬ benen Art erfindungsgemäß dadurch gelöst, daß man die Osteo¬ syntheseplatten mit elektromagnetischer Strahlung beauf¬ schlagt und mit dieser in den Verstärkungsfasern in Wärme umgesetzten Strahlung den die Fasern umgebenden Kunststoff so weit aufwärmt, bis er formbar wird. Wesentlich ist also, daß durch die elektromagnetische Strahlung die Verstärkungs¬ fasern mit einer energiereichen Strahlung beaufschlagt wer¬ den, so daß diese primär aufgeheizt werden. Diese geben dann die in ihnen erzeugte Wärme an den umgebenden Kunst¬ stoff ab, so daß die Osteosyntheseplatte insgesamt die gewünschte Verformbarkeit erfährt. Es kann beispielsweise vorgesehen sein, daß man Infrarot¬ strahlen verwendet. Bei einem anderen Verfahren ist vor¬ gesehen, daß man als Strahlung Mikrowellenstrahlung und als Fasern Kohlenstoffasern verwendet. Diese Kohlenstoff- fasern absorbieren die Mikrowellenstrahlung sehr effektiv und heizen sich im Mikrowellenfeld stärker auf, als bei¬ spielsweise umgebendes Körpergewebe.This object is achieved according to the invention in a method of the type described at the outset by subjecting the osteosynthesis plates to electromagnetic radiation and using the radiation converted into heat in the reinforcing fibers to heat the plastic surrounding the fibers until it can be shaped becomes. It is therefore essential that the electromagnetic radiation impinges on the reinforcing fibers with high-energy radiation, so that they are primarily heated. These then give off the heat generated in them to the surrounding plastic, so that the osteosynthesis plate as a whole experiences the desired deformability. For example, it can be provided that infrared rays are used. Another method provides that microwave radiation is used as radiation and carbon fibers are used as fibers. These carbon fibers absorb the microwave radiation very effectively and heat up more in the microwave field than, for example, surrounding body tissue.

Bei einem weiteren bevorzugten Ausführungsbeispiel erzeugt man in elektrisch leitenden Fasern durch Induktion Ströme und heizt dadurch diese und den umgebenden Kunststoff auf. Dieses Verfahren ist besonders vorteilhaft, da durch die Induktionsheizung im umgebenden Körpergewebe so gut wie keine Erwärmung auftritt, d.h. man kann mit dieser Methode selektiv nur die mit Kohlestoffasern., oder dergleichen versehene Osteo¬ syntheseplatte erwärmen. Es ist dabei vorteilhaft, wenn man die Erwärmung und Verformung an der Stelle vornimmt, an der die Osteosyntheseplatte am Knochen festgelegt wird, d.h. es ist nicht notwendig, die Osteosyntheseplatte extern zu er¬ wärmen, oder aber sogar von der Anlagestelle ein Modell an¬ zufertigen, wie es bei bekannten Verfahren üblich war.In a further preferred exemplary embodiment, currents are generated in electrically conductive fibers by induction, thereby heating them and the surrounding plastic. This method is particularly advantageous because the induction heating in the surrounding body tissue means that practically no heating occurs, i.e. this method can be used to selectively heat only the osteosynthesis plate provided with carbon fibers or the like. It is advantageous if the heating and deformation are carried out at the point where the osteosynthesis plate is attached to the bone, i.e. it is not necessary to heat the osteosynthesis plate externally, or even to make a model from the contact point, as was customary in known processes.

Zur Erwärmung der Osteosyntheseplatte ist es besonders vor¬ teilhaft, wenn man einen Sender für elektromagnetische Strahlung dicht an die am Knochen anliegende Osteosynthese¬ platte heranbringt. Die nachfolgende Beschreibung einer bevorzugten Ausführungs- form einer zur Durchführung des neuen Verfahrens geeigneten Vorrichtung dient der näheren Erläuterung.For heating the osteosynthesis plate, it is particularly advantageous if a transmitter for electromagnetic radiation is brought close to the osteosynthesis plate lying against the bone. The following description of a preferred embodiment of a device suitable for carrying out the new method serves for a more detailed explanation.

In der Zeichnung ist schematisch ein Sender 1 für eine elektromagnetische Strahlung dargestellt, beispielsweise ein Mikrowellensender oder ein Gehäuse mit einer in der Zeichnung nicht dargestellten Induktionsspule. Dieser Sender ist an einem verstellbaren Arm 2 gehalten, der seinerseits beispielsweise über ein Stativ am Operationstisch oder der¬ gleichen festgelegt ist. Der Arm 2 besteht aus einzelnen Gliedern 4, die relativ zueinander fixiert werden können, beispielsweise durch eine Klemmfixierung, die aber auch wahl¬ weise gelöst werden können, so daß der Arm dann frei verstell¬ bar ist. Mittels dieses Armes kann der Sender 1 unmittelbar an eine Osteosyntheseplatte 5 herangebracht werden, die an zwei Fragmenten 6 und 7 eines Knochens anliegt und die dazu verwendet werden soll, diese beiden längs einer Bruchlinie 8 getrennten Fragmente 6 und 7 relativ zueinander festzulegen.The drawing schematically shows a transmitter 1 for electromagnetic radiation, for example a microwave transmitter or a housing with an induction coil, not shown in the drawing. This transmitter is held on an adjustable arm 2, which in turn is fixed, for example, via a tripod on the operating table or the like. The arm 2 consists of individual links 4 which can be fixed relative to one another, for example by means of a clamping fixation, but which can also be released as desired, so that the arm can then be freely adjusted. By means of this arm, the transmitter 1 can be brought directly to an osteosynthesis plate 5 which bears against two fragments 6 and 7 of a bone and which is to be used to fix these two fragments 6 and 7, which are separated along a fracture line 8, relative to one another.

Die Osteosyntheseplatte 5 besteht aus einem thermoplastischen Kunststoffmaterial, das bei einer Temperatur geringfügig ober¬ halb der Körpertemperatur verformbar wird, das aber bei Körper¬ temperatur formstabil ist. Ein solches Material kann beispiels¬ weise ein modifiziertes Methacrylat sein, insbesondere ein Polyethylmethacrylat, welches bei einer Temperatur von eta 50° C verformbar wird. In die Kunststoffmasse sind Verstärkungsfasern 9 eingebettet, beispielsweise Kohlenstoff- endlosfasern, die einerseits der Verstärkung der Osteosynthese- The osteosynthesis plate 5 consists of a thermoplastic material which can be deformed at a temperature slightly above body temperature, but which is dimensionally stable at body temperature. Such a material can be, for example, a modified methacrylate, in particular a polyethyl methacrylate, which can be deformed at a temperature of approximately 50 ° C. Reinforcing fibers 9 are embedded in the plastic mass, for example continuous carbon fibers, which on the one hand reinforce the osteosynthesis.

platte dienen, andererseits aber die auf sie auftreffende elektromagnetische Strahlung absorbieren und in Wärme um¬ wandeln und somit den gesamten Kunststoffverbund über die Verformungstemperatur hinaus aufwärmen.serve plate, but on the other hand absorb the electromagnetic radiation impinging on them and convert them into heat and thus heat the entire plastic composite beyond the deformation temperature.

Wie aus der Zeichnung hervorgeht, kann der Sender 1 unmittel¬ bar bis an die Osteosyntheseplatte 5 herangebracht werden, so daß auch ein sehr effektiver Übergang der vom Sender aus¬ gesandten elektromagnetischen Strahlung auf die Osteosynthese¬ platte 5 erfolgt, ohne daß diese Strahlung mit der Körper¬ umgebung wesentlich in Wechselwirkung tritt. Damit ist eine selektive Aufheizung der Osteosytheseplatte möglich. As can be seen from the drawing, the transmitter 1 can be brought directly up to the osteosynthesis plate 5, so that a very effective transition of the electromagnetic radiation emitted by the transmitter to the osteosynthesis plate 5 also takes place without this radiation with the Body environment interacts significantly. This enables selective heating of the osteosythesis plate.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS 1. Verfahren zur Formanpassung von Osteosyntheseplatten, die aus einem thermoplastischen Kunststoff bestehen und ein¬ gelagerte Verstärkungsfasern enthalten, dadurch gekennzeichnet, daß man die Osteosyntheseplatten mit elektromagnetischer Strahlung beaufschlagt und mit dieser in den Verstärkungs¬ fasern in Wärme umgesetzten Strahlung den die Fasern um¬ gebenden Kunststoff soweit aufwärmt, bis er verformbar wird.1. A method for adapting the shape of osteosynthesis plates, which consist of a thermoplastic and contain embedded reinforcing fibers, characterized in that electromagnetic radiation is applied to the osteosynthesis plates and the radiation surrounding them in the reinforcing fibers converts them into heat Warm up plastic until it can be deformed. 2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß man Infrarotstrahlung verwendet.2. The method according to claim 1, characterized in that infrared radiation is used. 3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß man als Strahlung Mikrowellenstrahlung und als Fasern Kohlenstoffasern verwendet.3. The method according to claim 1, characterized in that microwave radiation is used as radiation and carbon fibers as fibers. 4. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß man in elektrisch leitenden Fasern durch Induktion Ströme erzeugt und dadurch diese un den umgebenden Kunst¬ stoff aufheizt. 4. The method according to claim 1, characterized in that currents are generated in electrically conductive fibers by induction and thereby these un heating the surrounding plastic. 5. Verfahren nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß man die Erwärmung und Verformung an der Stelle vor¬ nimmt, an der die Osteosyntheseplatte am Knochen festgelegt wird.5. The method according to any one of the preceding claims, characterized in that one takes the heating and deformation vor¬ at the point at which the osteosynthesis plate is fixed to the bone. 6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß man zur Erwärmung der Osteosyntheseplatte einen Sender für die elektromagnetische Strahlung dicht an die am Knochen anliegende Osteosyntheseplatte heranbringt. 6. The method according to claim 5, characterized in that for heating the osteosynthesis plate a transmitter for the electromagnetic radiation is brought close to the osteosynthesis plate lying against the bone.
PCT/EP1990/000658 1989-04-28 1990-04-24 Process for conforming osteosynthesis plates Ceased WO1990013266A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3914163.2 1989-04-28
DE19893914163 DE3914163C1 (en) 1989-04-28 1989-04-28

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Publication Number Publication Date
WO1990013266A1 true WO1990013266A1 (en) 1990-11-15

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WO (1) WO1990013266A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0542004A1 (en) * 1991-11-13 1993-05-19 Howmedica GmbH Support plate for the human spine
DE19929255A1 (en) * 1999-06-25 2001-02-15 Leibinger Medizintech Device to deform plates for bone treatment; has heating elements in parallel cylindrical elements, which are hinged to form a pair of tweezers, and temperature sensors coupled to heating elements

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5779706A (en) * 1992-06-15 1998-07-14 Medicon Eg Surgical system
US5290281A (en) * 1992-06-15 1994-03-01 Medicon Eg Surgical system
FR2726757B1 (en) * 1994-11-16 1998-05-22 Soubeiran Arnaud Andre SURGICAL IMPLANTABLE DEVICE WITH GEOMETRY MODIFIABLE BY HEATING AND APPLICATIONS
DE10137010C1 (en) * 2001-07-28 2003-03-13 Aesculap Ag & Co Kg Medicinal implant system comprises an implant consisting of a composite material containing glass fibers, at least one of which is connected to a sender transmitting radiation into the implant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003758A1 (en) * 1980-02-01 1981-08-06 Werner Dipl.-Ing. 8000 München Kraus DEVICE FOR VITAL CONSERVATION OF BONE TISSUE
WO1982003323A1 (en) * 1981-04-01 1982-10-14 Kranz Curt Joint prothesis
GB2109295A (en) * 1981-11-11 1983-06-02 South African Inventions Moulding a precursor device for a surgical implant
GB2181438A (en) * 1985-10-07 1987-04-23 South African Inventions Biocompatible material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003758A1 (en) * 1980-02-01 1981-08-06 Werner Dipl.-Ing. 8000 München Kraus DEVICE FOR VITAL CONSERVATION OF BONE TISSUE
WO1982003323A1 (en) * 1981-04-01 1982-10-14 Kranz Curt Joint prothesis
GB2109295A (en) * 1981-11-11 1983-06-02 South African Inventions Moulding a precursor device for a surgical implant
GB2181438A (en) * 1985-10-07 1987-04-23 South African Inventions Biocompatible material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0542004A1 (en) * 1991-11-13 1993-05-19 Howmedica GmbH Support plate for the human spine
US5527311A (en) * 1991-11-13 1996-06-18 Howmedica Gmbh Support for the human spine
DE19929255A1 (en) * 1999-06-25 2001-02-15 Leibinger Medizintech Device to deform plates for bone treatment; has heating elements in parallel cylindrical elements, which are hinged to form a pair of tweezers, and temperature sensors coupled to heating elements
DE19929255C2 (en) * 1999-06-25 2002-08-01 Leibinger Medizintech Device for deforming plates for bone treatment

Also Published As

Publication number Publication date
DE3914163C1 (en) 1990-08-30

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