EP1763375A1 - Interferenz-erzeugende, farbige beschichtung für chirurgische implantate und instrumente - Google Patents
Interferenz-erzeugende, farbige beschichtung für chirurgische implantate und instrumenteInfo
- Publication number
- EP1763375A1 EP1763375A1 EP04738063A EP04738063A EP1763375A1 EP 1763375 A1 EP1763375 A1 EP 1763375A1 EP 04738063 A EP04738063 A EP 04738063A EP 04738063 A EP04738063 A EP 04738063A EP 1763375 A1 EP1763375 A1 EP 1763375A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating according
- oxide
- layer
- interference layer
- interference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61L27/28—Materials for coating prostheses
- A61L27/30—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
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/08—Materials for coatings
- A61L29/10—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
Definitions
- the invention relates to a coating, in particular for the characterization and characterization of surgical implants and instruments, and as a diffusion barrier for surgical implants and instruments according to the preamble of patent claim 1.
- Such coatings serve, in particular, as color coding (identification and characterization) different types and sizes of surgical implants or instruments, e.g. Bone plates, bone screws or fferendre ⁇ hern in a simple and secure way to differentiate and thus match the Kompati ⁇ bility of individual components to each other.
- the diameter, drive type e.g., Torx, Hex, right-hand thread, left-hand thread
- other characteristics can be distinguished.
- a suitable coding scheme is known from US Pat. No. 5,597,384 WALKER ET AL, but without mentioning how the coating is applied to the implant surface.
- DLC diamond-like carbon
- a disadvantage of these known color-coding coatings is the fact that many are electrically conductive and therefore subject to corrosion by occurring potential differences.
- these known color coding coatings are partially porous, adhere poorly to the substrate and the color is material-dependent, so that there is only a small margin for coloring.
- the invention aims to remedy this situation.
- the invention has for its object to provide a coating on surgical implants or instruments, which is not susceptible to corrosion, has good biocompatibility and a free, characteristic drawing coloring of the entire color spectrum, as well as diffusion-inhibiting effects on allergenic substances such as nickel or molybdenum (substrate materials).
- the invention solves the problem with a coating having the features of claim 1.
- the advantages achieved by the invention are manifold and include the following aspects: a) colors can be generated from the whole visible spectrum, e.g. red, orange, yellow, green, blue, indigo, purple; b) thanks to the coating according to the invention, no corrosive streams can arise which can damage, detach or dissolve the interference coating; c) it is resistant and protects against chemical and thermal attack; d) the diffusion process is locally suppressed and the release of metal ions from the substrate is greatly reduced; and e) by choosing suitable layer thicknesses and layer materials (i.e., their refractive indices), the desired interference colors can be generated.
- the coatings according to the invention are colorless and transparent on their own (ie transparent), i. they have no or only a weak absorption. For this reason, the coloration does not just come about through the color material or dyes inherent in the layer material, as is the case with conventional industrial paints.
- the simplest technical solution is the single layer.
- This may for example consist of TiO 2 , or their suboxides, " T ⁇ 2 O 3 , Ti 3 O 5, etc., in addition, for example, Ta 2 O 5 , Nb 2 O 5 , ZrO 2 , HfO 2 , or mixtures thereof, ie metal oxides.
- nitrogen compounds eg Si 3 N 4, etc.
- the greatest challenge to the layers are the applied in practice ag ⁇ gressive cleaning treatments, eg. B. Sterilization at 135 ° C, washing in strongly alkaline solutions at pH's around 10 - 12; this at several hundred aufein ⁇ subsequent cycles.
- the destructive mechanisms occurring at the layers are diffusion processes (penetration of moisture or solutions along the boundary and separation surfaces of the layer system, as well as direct external influences on the layer surface, preferably on pores, layer cracks, surface injuries, etc.
- the principle of color generation by dielectric layers on implant surfaces is therefore based on selectively modifying the course of their consistently flat reflection curve (FIG. 1) in order to produce the required color effects.
- the interference layer consists of a homogeneous material, i. a constant material in terms of chemical composition, morphology and refractive index.
- the interference layer may also be inhomogeneous and in particular consist of a material whose refractive index varies continuously in a direction perpendicular to the interference layer (as in a "rugate filter"). Furthermore, it is advantageous if the interference layer is corrosion-resistant and preferably does not adversely affect the corrosion resistance of the surface of the implant or of the instrument.
- the interference layer may comprise the following substances or mixtures thereof: a) oxides or suboxides of the elements Si, Ta, Ti, Y, Zr, Al, Cr, Nb, V and Hf; b) nitrides of the element silicon; or c) fluorides of the element magnesium.
- the oxide or suboxide can be selected from the group consisting of titanium oxides (TiO 2 and Ti 2 Os), tantalum oxide (Ta 2 O 5 ), zirconium oxide (ZrO 2 ), hafnium oxide (HfO 2 ), niobium oxide (Nb 2 O 5 ), yttrium oxide (Y 2 O 3 ), aluminum oxide (Al 2 Os) and silicon oxide (SiO 2 ) or their suboxides are selected.
- the nitride may be silicon nitride (Si 3 N 5 ) and the fluoride may be magnesium fluoride (MgF 2 ).
- the interference layer has a refractive index n> 1, 9, preferably n> 2.2.
- n> 1, 9, preferably n> 2.2 The advantage of these higher refractive indices lies in the greater effect of modifying the flat curve of the bare substrate surface.
- the specific properties of the coating can be specifically influenced by expanding the number of layers.
- the interference layer consists of several, one above the other, an interference layer system forming Ein ⁇ zel harshen. Since the coating according to the invention as such is transparent, as a result of reflection at several layer transitions (separating surfaces) this leads to a superposition of waves which amplify in certain spectral regions and extinguish in others, which leads to the desired reflection behavior within the spectrum ( see graphs according to Fig. 4-7).
- the interference layer system, or its individual layers - taken individually - typically have a thickness of at most 500 nm, preferably of at most 250 nm, with a minimum thickness of at least 10 nm being advantageous.
- the uncoated surface of the implant or of the instrument advantageously consists of steel, a Co-base alloy, titanium, NiTi or a titanium alloy.
- the interference layer consists of non-conductive titanium oxide (TiO 2 ).
- an intermediate adhesive layer is arranged between the interference layer and the surface of the implant or of the instrument.
- the adhesive layer may consist of an oxide or suboxide of the elements Si, Ta, Ti, Y, Zr, Al, Cr, Nb, V and Hf, in particular a chromium oxide or silicon oxide or mixtures thereof.
- the oxide or suboxide can be selected from the group consisting of: titanium oxide (TiO 2 ), tantalum oxide (Ta 2 O 5 ), zirconium oxide (ZrO 2 ), niobium oxide (Nb 2 O 5 ), or silicon oxide (SiO 2 ) or its suboxides ,
- the adhesive layer advantageously has a thickness of at least 2 nm, preferably at least 10 nm.
- the maximum thickness of the adhesive layer is advantageously at most 20 nm, preferably at most 10 nm.
- a cover layer is applied to the interference layer.
- the cover layer has a protective function and leads to an improved
- the cover layer can consist of one of the following substances or mixtures thereof: a) oxides or suboxides of the elements Si, Ta, Ti, Y, Zr, Al, Cr, Nb, V and Hf; b) nitrides of the element silicon; or c) fluorides of the element magnesium.
- the cover layer preferably consists of Al 2 O 3 , MgF 2 or mixtures thereof.
- the oxide or suboxide may be selected from the group: titanium oxide (TiO 2 ), tantalum oxide (Ta 2 O 5 ), zirconium oxide (ZrO 2 ), niobium oxide (Nb 2 O 5 ), or silicon oxide (SiO 2 ) or their suboxides ,
- the cover layer is equal to or less thick than the interference layer.
- the refractive indices n of adjacent individual layers of the interference layer have a difference ⁇ n of at least 0.5, preferably of at least 0.7. This results in a greater effect in color production, i. brighter colors and better contrasts.
- individual interfaces preferably of aluminum oxide AbO 3 , between the a) surface of the implant or instrument; b) the interference layers; c) the adhesive layer and / or d) cover layer arranged as a diffusion barrier or to improve the mechanical properties ange ⁇ .
- the diffusion barrier also prevents Abga ⁇ be of potentially harmful substrate substances to the human body.
- the diffusion barrier advantageously has a thickness of at least 10 nm, preferably at least 25 nm.
- the maximum thickness of the diffusion barrier is advantageously at most 1000 nm, preferably at most 50 nm.
- the interference layer is advantageously free of pores.
- the coating according to the invention can be produced by the surface of an implant or an instrument by means of a PVD method (Physical Vapor Deposition), a CVD method (Chemical Vapor Deposition), a sputtering method-in particular also by means of an ion source or by ion gun - Is coated or a SolGel method with atoms from the group Mg, Si, Ta, Ti, Y, Zr, Al, Cr, Nb, V and Hf.
- the ion cannon may be eg a Kaufman cannon.
- the surface prior to coating with atoms, is subjected to ion bombardment, preferably with Ar, O 2 or N 2 ions or combinations thereof for their purification.
- the interference layer applied to the surface can be reoxidized with O 2 , preferably in a circulating air tempering furnace.
- the coating according to the invention can also be used as a diffusion barrier.
- the invention and further developments of the invention will be explained in more detail below with reference to the partially schematic diagrams of several embodiments.
- Fig. 1 is a spectral reflection curve of a polished implant surface.
- the respective reflectivity depends on the quality of the surface concerned, that is to say its polish;
- FIG. 2 shows spectral reflection curves of Au, Cu, and Al mirror surfaces
- FIG. 5 shows the spectral reflection curve of an implant surface with a titanium dioxide coating according to the invention for producing the color gold (layer thickness approx. 130 nm);
- FIG. 6 shows the spectral reflection curve of an implant surface with a titanium dioxide coating according to the invention for producing the color red (layer thickness approx. 150 nm);
- FIG. 7 shows the spectral reflection curve of an implant surface with a titanium dioxide coating according to the invention for producing the color green (layer thickness approximately 200 nm).
- the application of the described color coded to medical implants and surgical instruments thus does not correspond to the conventional colorization process, such as painting or spraying on surfaces.
- the vacuum coating technologies described above are used. All of these methods are known standard methods in optics and electronics, for example when applying reflection-reducing layers on lenses (cameras, binoculars, microscopes, etc.) or spectacle lenses, the coating of wafers in chip production, or the application of hard layers (eg B. Ion Plating method) on tools (drills, punching tools) to increase their service life.
- Ion sources can assist in this process by first cleaning the surface before coating by removing the uppermost atomic layers of the substrate, as well as later by compaction of the layer by layers are switched on. It may also be possible to reoxidize the interference layer with O 2 , for example in a circulating air tempering furnace.
- An electropolished bone screw was subjected to a multi-stage ultrasonic washing process in alkaline solution with a final cleaning in deionized water for 10 minutes.
- the bone screw was inserted with tweezers into a clamp holder and the latter into a vacuum chamber and anchored on the carrier provided for this purpose. 4. After all openings of the vacuum chamber which was evacuated to about 5 x 10 " ⁇ mbar and a heating of the bone screw by means Sub ⁇ strattropicung to 300 0 C.
- the crucible of the evaporation source was brought to the evaporation temperature of the vaporized material (about 2000 0 C).
- the coating was carried out for 10 minutes until a layer thickness of 65 nm was measured with a suitable layer thickness measuring device (quartz crystal or optical monitor) and the aperture again covered the crucible of the evaporation source.
- a suitable layer thickness measuring device quartz crystal or optical monitor
- the coated bone screw was removed from the system and cooled for 10 minutes in the ambient air and then removed from the clamping bracket, which was the coating process completed.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Dermatology (AREA)
- Medicinal Chemistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Materials For Medical Uses (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2004/000422 WO2006002553A1 (de) | 2004-07-06 | 2004-07-06 | Interferenz-erzeugende, farbige beschichtung für chirurgische implantate und instrumente |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1763375A1 true EP1763375A1 (de) | 2007-03-21 |
Family
ID=34957835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04738063A Withdrawn EP1763375A1 (de) | 2004-07-06 | 2004-07-06 | Interferenz-erzeugende, farbige beschichtung für chirurgische implantate und instrumente |
Country Status (10)
Country | Link |
---|---|
US (1) | US20070202361A1 (de) |
EP (1) | EP1763375A1 (de) |
JP (1) | JP2008504913A (de) |
CN (1) | CN1972724A (de) |
AU (1) | AU2004321256A1 (de) |
BR (1) | BRPI0418880A (de) |
CA (1) | CA2572977A1 (de) |
NZ (1) | NZ551893A (de) |
TW (1) | TW200602014A (de) |
WO (1) | WO2006002553A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PT1112095E (pt) | 1998-09-11 | 2003-04-30 | Axel Stemberger | Implantes biologicamente activos |
WO2011129754A1 (en) * | 2010-04-12 | 2011-10-20 | Sandvik Intellectual Property Ab | Coated medical implant |
FI2823079T3 (fi) | 2012-02-23 | 2023-05-04 | Treadstone Tech Inc | Korrosiota kestävä ja sähköä johtava metallin pinta |
DE102013215835A1 (de) | 2013-08-09 | 2015-02-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Abscheidung von Farbmarkierungen aus Titanoxiden auf medizintechnischen Produkten, Beschichtungssystem zur Herstellung beschichteter Materialien |
JP2017503564A (ja) * | 2013-12-18 | 2017-02-02 | ノヴォクセル リミテッド | 組織気化装置および方法 |
DE102014210671A1 (de) * | 2014-06-05 | 2015-12-17 | BSH Hausgeräte GmbH | Verfahren zur verhinderung von interferenzfarben auf dünn beschichteten metalloberflächen |
WO2016109481A2 (en) | 2014-12-30 | 2016-07-07 | DePuy Synthes Products, Inc. | Coatings for surgical instruments |
TWI557442B (zh) * | 2015-02-04 | 2016-11-11 | 明新科技大學 | 二氧化鈦光學薄膜及其製備方法 |
US20180028289A1 (en) * | 2015-03-04 | 2018-02-01 | Tav - Medical Ltd | Dental implant installation assembly and coated implantation tool therefore |
EP3292877A1 (de) | 2016-09-09 | 2018-03-14 | Universität Basel | Implantat oder osteosynthese und verfahren zu dessen herstellung |
CN107699860A (zh) * | 2017-10-23 | 2018-02-16 | 南昌航空大学 | 一种提高医用多孔钛合金生物活性的制备方法 |
CN110194659A (zh) * | 2019-06-12 | 2019-09-03 | 南京赛诺特斯材料科技有限公司 | 一种基于纳米氧化锆和氧化铝复合陶瓷的口腔修复材料 |
CN111286591B (zh) * | 2020-03-21 | 2021-12-24 | 哈尔滨工程大学 | 一种低碳钢表面加速元素扩散方法 |
EP4138942A1 (de) * | 2020-04-23 | 2023-03-01 | Sintx Technologies, Inc. | Verfahren zur siliciumnitrid-laserplattierung |
DE102021118400A1 (de) * | 2021-07-16 | 2023-01-19 | Aesculap Ag | Medizinisches System und Verfahren zum Prüfen einer Kompatibilität von Implantaten und Instrumenten eines medizinischen Systems |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1943801C3 (de) | 1968-07-10 | 1975-11-20 | Institut Dr.-Ing. Reinhard Straumann Ag, Waldenburg (Schweiz) | Für die operative Knochenbehandlung dienendes Implantat aus Titan oder einer Legierung auf Titanbasis |
CH497891A (de) * | 1968-09-03 | 1970-10-31 | Straumann Inst Ag | Für die operative Knochenbehandlung dienendes Implantat aus Titan oder einer Legierung auf Titanbasis |
JPS60253439A (ja) * | 1984-05-29 | 1985-12-14 | 京セラ株式会社 | チタン系義歯床用金属部材 |
US4738248A (en) * | 1986-07-17 | 1988-04-19 | Cedar Development Corp. | Surgical retractors |
US5246787A (en) * | 1989-11-22 | 1993-09-21 | Balzers Aktiengesellschaft | Tool or instrument with a wear-resistant hard coating for working or processing organic materials |
JP3439809B2 (ja) * | 1993-12-24 | 2003-08-25 | 京セラ株式会社 | 人工角膜 |
US5597384A (en) | 1994-09-13 | 1997-01-28 | Zimmer, Inc. | Color coding for implant selection |
DE19506188C2 (de) * | 1995-02-22 | 2003-03-06 | Miladin Lazarov | Implantat und dessen Verwendung |
US5674293A (en) | 1996-01-19 | 1997-10-07 | Implant Sciences Corp. | Coated orthopaedic implant components |
DE19707806A1 (de) * | 1997-02-27 | 1998-09-03 | Merck Patent Gmbh | Multischicht-Interferenzpigment mit transparenter Mittelschicht |
US6333093B1 (en) * | 1997-03-17 | 2001-12-25 | Westaim Biomedical Corp. | Anti-microbial coatings having indicator properties and wound dressings |
DE19746067A1 (de) * | 1997-10-17 | 1999-04-22 | Merck Patent Gmbh | Interferenzpigmente |
DE29804057U1 (de) | 1998-03-07 | 1998-05-07 | Aesculap AG & Co. KG, 78532 Tuttlingen | Chirurgisches Instrument |
AU3203599A (en) * | 1998-04-01 | 1999-10-18 | Parallax Medical, Inc. | Pressure applicator for hard tissue implant placement |
CN1158403C (zh) | 1999-12-23 | 2004-07-21 | 西南交通大学 | 一种人工器官表面改性方法 |
US6586098B1 (en) * | 2000-07-27 | 2003-07-01 | Flex Products, Inc. | Composite reflective flake based pigments comprising reflector layers on bothside of a support layer |
GB0116725D0 (en) * | 2001-07-09 | 2001-08-29 | Europ Economic Community | Biomedical titanium implants |
DE10221518A1 (de) * | 2002-05-14 | 2003-11-27 | Merck Patent Gmbh | Infrarot reflektierendes Material |
-
2004
- 2004-07-06 NZ NZ551893A patent/NZ551893A/en unknown
- 2004-07-06 CA CA002572977A patent/CA2572977A1/en not_active Abandoned
- 2004-07-06 AU AU2004321256A patent/AU2004321256A1/en not_active Abandoned
- 2004-07-06 JP JP2007519588A patent/JP2008504913A/ja active Pending
- 2004-07-06 CN CNA2004800433892A patent/CN1972724A/zh active Pending
- 2004-07-06 WO PCT/CH2004/000422 patent/WO2006002553A1/de not_active Application Discontinuation
- 2004-07-06 EP EP04738063A patent/EP1763375A1/de not_active Withdrawn
- 2004-07-06 BR BRPI0418880-2A patent/BRPI0418880A/pt not_active IP Right Cessation
-
2005
- 2005-04-27 TW TW094113410A patent/TW200602014A/zh unknown
-
2007
- 2007-01-05 US US11/650,269 patent/US20070202361A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2006002553A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2572977A1 (en) | 2006-01-12 |
WO2006002553A1 (de) | 2006-01-12 |
AU2004321256A1 (en) | 2006-01-12 |
CN1972724A (zh) | 2007-05-30 |
BRPI0418880A (pt) | 2007-12-11 |
US20070202361A1 (en) | 2007-08-30 |
JP2008504913A (ja) | 2008-02-21 |
TW200602014A (en) | 2006-01-16 |
NZ551893A (en) | 2009-12-24 |
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