DE19963085B4 - Titanium screw for body implants - Google Patents

Titanium screw for body implants Download PDF

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Publication number
DE19963085B4
DE19963085B4 DE1999163085 DE19963085A DE19963085B4 DE 19963085 B4 DE19963085 B4 DE 19963085B4 DE 1999163085 DE1999163085 DE 1999163085 DE 19963085 A DE19963085 A DE 19963085A DE 19963085 B4 DE19963085 B4 DE 19963085B4
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DE
Germany
Prior art keywords
titanium
coating
titanium screw
body implants
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
DE1999163085
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German (de)
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DE19963085A1 (en
Inventor
Peter Brehm
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to DE1999163085 priority Critical patent/DE19963085B4/en
Publication of DE19963085A1 publication Critical patent/DE19963085A1/en
Application granted granted Critical
Publication of DE19963085B4 publication Critical patent/DE19963085B4/en
Anticipated expiration legal-status Critical
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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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/866—Material or manufacture
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A61C8/0013—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
    • 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
    • A61L31/02—Inorganic materials
    • A61L31/022—Metals or alloys
    • 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
    • A61L31/08—Materials for coatings
    • A61L31/082—Inorganic materials
    • 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
    • A61L31/08—Materials for coatings
    • A61L31/082—Inorganic materials
    • A61L31/084—Carbon; Graphite
    • 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
    • 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
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00389—The prosthesis being coated or covered with a particular material
    • A61F2310/00574—Coating or prosthesis-covering structure made of carbon, e.g. of pyrocarbon
    • A61F2310/0058—Coating made of diamond or of diamond-like carbon DLC
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00389—The prosthesis being coated or covered with a particular material
    • A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
    • A61F2310/00856—Coating or prosthesis-covering structure made of compounds based on metal nitrides
    • A61F2310/0088—Coating made of titanium nitride
    • 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
    • A61L2430/00—Materials or treatment for tissue regeneration
    • A61L2430/02—Materials or treatment for tissue regeneration for reconstruction of bones; weight-bearing implants

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Epidemiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Neurology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Chemical Vapour Deposition (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Titanschraube für Körperimplantate, dadurch gekennzeichnet, daß sie eine Oberflächenbeschichtung auf Stickstoff- oder Kohlenstoff-Basis aufweist in Form einer im PVD- oder CVD-Verfahren aufgebrachten TiN-Beschichtung oder einer DLC-Beschichtung.titanium screw for body implants, by doing so characterized in that they a surface coating based on nitrogen or carbon in the form of an im PVD or CVD method applied TiN coating or a DLC coating.

Description

Die Erfindung richtet sich auf eine Titanschraube für Körperimplantate.The Invention is directed to a titanium screw for body implants.

Derartige Schrauben werden aus Titan hergestellt, weil Titan eine hohe Biokompatibilität aufweist ( DE 85 28 004 U1 ).Such screws are made of titanium, because titanium has a high biocompatibility ( DE 85 28 004 U1 ).

Titanschrauben werden einerseits direkt in die Knochen eingeschraubt, andererseits werden sie in ein korrespondierendes Gewinde eingedreht, um auf diese Weise ein Implantat zu fixieren oder Teile zu verbinden. Beispielsweise kann mit Hilfe einer solchen Schraube ein Verbindungsteil einer Versteifungsanordnung an einem Femur- oder Tibia-Schaft angeschraubt werden.titanium screws on the one hand screwed directly into the bone, on the other hand they are screwed into a corresponding thread to open this way of fixing an implant or joining parts. For example can with the help of such a screw a connecting part of a Stiffening arrangement screwed to a femoral or tibial shaft become.

Dabei tritt das Problem auf, daß Titan zum Kaltverschweißen neigt, woraus beim Einschrauben ein Knarren resultiert. Dies hat zur Folge, daß der die Schraube drehende Operateur kein Gefühl dafür ausbringen kann, ob die Schraube schon den gewünschten festen Sitz erzielt hat. Es besteht also die Gefahr, daß der Operateur subjektiv meint, die Schraube sitze schon fest, obwohl der vollständige Verschraubungszustand noch nicht erreicht ist.there the problem arises that titanium for cold welding tends to give a creaking when screwed in. this has with the result that the The screw-rotating surgeon can not muster a feel for whether the screw already the desired firm seat. So there is a risk that the surgeon subjectively means that the screw is already stuck, although the complete screwed state not yet reached.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Titanschraube der in Betracht stehenden Art so auszubilden, daß dieses Problem vermieden wird.Of these, Based on the object of the invention, a titanium screw the type in question in such a way that avoids this problem becomes.

Diese Aufgabe wird erfindungsgemäß mit einer Titanschraube gelöst, die die im Patentanspruch 1 oder 2 angegebenen Merkmale aufweist.These Task is according to the invention with a Solved titanium screw, having the features specified in claim 1 or 2 features.

Es ist vorgesehen, daß eine TiN-Beschichtung aufgebracht ist, und zwar entweder im PVD- (Physical vapour deposition) oder im CVD- (Chemical vapour deposition) Verfahren, oder eine Beschichtung aufgebracht ist in Form einer sogenannten DLC-Beschichtung, d.h. einer Kohlenstoff-Beschichtung, die als "diamondlike carbon" bezeichnet wird. Diese Beschichtung kann in einem PVD- oder CVD-Prozeß mit oder ohne Metall-Kathode aufgebracht werden.It is provided that a TiN coating is applied, either in PVD (Physical vapor deposition) or in the CVD (Chemical vapor deposition) method, or a coating is applied in the form of a so-called DLC coating, i.e. a carbon coating, the as "diamondlike carbon " becomes. This coating can be used in a PVD or CVD process with or without metal cathode be applied.

Eine Alternative besteht in einer Beschichtung, die im Plasma-Ionen-Immersions-Implantations-Verfahren aufgebracht ist. Hierdurch werden in das Titangitter auf Zwischengitterplätze Stickstoff-Ionen eingebracht, wobei die Stickstoffkonzentration von außen nach innen abnimmt. An der Oberfläche bildet sich keramisches Titannitrid aus, wobei die Oberfläche besonders hart ist und sich zur Innenseite hin ein Härtegradient ausbildet, so daß sprungartig Härteänderungen vermieden werden. Hierdurch werden besonders vorteilhafte Einschraubeigenschaften erzielt, insbesondere ergibt sich ein knarrfreier, kontinuierlicher Eindrehvorgang.A Alternative consists in a coating, in the plasma ion immersion implantation method is applied. As a result, in the titanium grid on interstitial sites nitrogen ions introduced, the nitrogen concentration from the outside to decreases inside. Forming on the surface ceramic titanium nitride, the surface especially is hard and forms a hardness gradient to the inside, so that sudden changes in hardness be avoided. As a result, particularly advantageous screwing properties are achieved, In particular, there is a creak-free, continuous screwing.

Claims (3)

Titanschraube für Körperimplantate, dadurch gekennzeichnet, daß sie eine Oberflächenbeschichtung auf Stickstoff- oder Kohlenstoff-Basis aufweist in Form einer im PVD- oder CVD-Verfahren aufgebrachten TiN-Beschichtung oder einer DLC-Beschichtung.Titanium screw for body implants, characterized in that it has a surface coating based on nitrogen or carbon in the form of a PVD or CVD method applied TiN coating or a DLC coating. Titanschraube für Körperimplante, dadurch gekennzeichnet, daß an der Oberfläche eine Titan-Nitrid-Schicht ausgebildet ist, die im Plasma-Ionen-Immersions-Implantations-Verfahren aufgebracht ist.Titanium screw for Body implants, characterized in that the surface a titanium nitride layer is formed, in the plasma ion immersion implantation method is applied. Titanschraube nach Anspruch 2, dadurch gekennzeichnet, daß die Konzentration der auf Zwischengitter-Plätzen abgelagerten Stickstoff-Atome von der Oberfläche nach innen hin kontinuierlich abnimmt.Titanium screw according to claim 2, characterized that the Concentration of deposited on interstitial sites nitrogen atoms from the surface decreases continuously inside.
DE1999163085 1999-12-24 1999-12-24 Titanium screw for body implants Revoked DE19963085B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999163085 DE19963085B4 (en) 1999-12-24 1999-12-24 Titanium screw for body implants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999163085 DE19963085B4 (en) 1999-12-24 1999-12-24 Titanium screw for body implants

Publications (2)

Publication Number Publication Date
DE19963085A1 DE19963085A1 (en) 2001-07-05
DE19963085B4 true DE19963085B4 (en) 2005-07-14

Family

ID=7934556

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999163085 Revoked DE19963085B4 (en) 1999-12-24 1999-12-24 Titanium screw for body implants

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DE (1) DE19963085B4 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10159683A1 (en) * 2001-11-30 2003-06-18 Michael Gahlert Dantalimplantat
EP1927325A1 (en) * 2006-12-01 2008-06-04 ZL Microdent-Attachment GmbH & Co. KG Implant and method for modifying the surface of an implant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8528004U1 (en) * 1985-10-02 1986-01-09 Oswald Leibinger GmbH, 7202 Mühlheim Bone screw
EP0555033A1 (en) * 1992-02-07 1993-08-11 SMITH & NEPHEW RICHARDS, INC. Surface hardened biocompatible metallic medical implants
WO1998043550A1 (en) * 1997-03-27 1998-10-08 Davidson James A Titanium molybdenum hafnium alloys for medical implants and devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8528004U1 (en) * 1985-10-02 1986-01-09 Oswald Leibinger GmbH, 7202 Mühlheim Bone screw
EP0555033A1 (en) * 1992-02-07 1993-08-11 SMITH & NEPHEW RICHARDS, INC. Surface hardened biocompatible metallic medical implants
WO1998043550A1 (en) * 1997-03-27 1998-10-08 Davidson James A Titanium molybdenum hafnium alloys for medical implants and devices

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Publication number Publication date
DE19963085A1 (en) 2001-07-05

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