ITMO20060170A1 - METHOD FOR MAKING ANTIBACTERIAL AND ANTIVIRAL SURFACES OF METALLIC MANUFACTURED PRODUCTS FOR MEDICAL USE - Google Patents
METHOD FOR MAKING ANTIBACTERIAL AND ANTIVIRAL SURFACES OF METALLIC MANUFACTURED PRODUCTS FOR MEDICAL USE Download PDFInfo
- Publication number
- ITMO20060170A1 ITMO20060170A1 ITMO20060170A ITMO20060170A1 IT MO20060170 A1 ITMO20060170 A1 IT MO20060170A1 IT MO20060170 A ITMO20060170 A IT MO20060170A IT MO20060170 A1 ITMO20060170 A1 IT MO20060170A1
- Authority
- IT
- Italy
- Prior art keywords
- solution
- washing
- irradiating
- washing liquid
- minutes
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 40
- 230000000844 anti-bacterial effect Effects 0.000 title claims description 11
- 230000000840 anti-viral effect Effects 0.000 title claims description 10
- 238000005406 washing Methods 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 241000894006 Bacteria Species 0.000 claims description 11
- 241000700605 Viruses Species 0.000 claims description 11
- 238000011282 treatment Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 7
- 230000001699 photocatalysis Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical class [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 6
- 239000007788 liquid Substances 0.000 claims 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims 2
- 239000007769 metal material Substances 0.000 claims 2
- 229910001069 Ti alloy Inorganic materials 0.000 claims 1
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000007598 dipping method Methods 0.000 claims 1
- 229910010272 inorganic material Inorganic materials 0.000 claims 1
- 239000011147 inorganic material Substances 0.000 claims 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical class [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims 1
- 239000011787 zinc oxide Substances 0.000 claims 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 208000015181 infectious disease Diseases 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000002458 infectious effect Effects 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 208000034309 Bacterial disease carrier Diseases 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000002757 inflammatory effect Effects 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/54—Biologically active materials, e.g. therapeutic substances
-
- 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
- A61L27/02—Inorganic materials
- A61L27/04—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
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Transplantation (AREA)
- Epidemiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dermatology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Laminated Bodies (AREA)
Description
EUROCOATING S.P.A. EUROCOATING S.P.A.
POLITECNICO DI MILANO POLITECNICO DI MILANO
Descrizione di invenzione industriale avente per titolo: Description of an industrial invention entitled:
“METODO PER RENDERE ANTIBATTERICHE ED ANTIVIRALI SUPERFICI DI MANUFATTI METALLICI DESTINATI AD IMPIEGHI MEDICALI". "METHOD FOR MAKING ANTIBACTERIAL AND ANTIVIRAL SURFACES OF METALLIC PRODUCTS INTENDED FOR MEDICAL USE".
Inventori designati: Petrini Paola, Bozzini Sabrina ,Tanzi Maria Cristina, Visai Livia. Designated inventors: Petrini Paola, Bozzini Sabrina, Tanzi Maria Cristina, Visai Livia.
Depositata il: -j ^MAG2006 MO 2 0 0 6 A 0 0 0 1 70 Filed on: -j ^ MAY2006 MO 2 0 0 6 A 0 0 0 1 70
DESCRIZIONE DESCRIPTION
L'invenzione riguarda un metodo per rendere antibatteriche ed antivirali superfici di manufatti metallici destinati ad impieghi medicali. The invention relates to a method for making surfaces of metal articles intended for medical use antibacterial and antiviral.
E’ noto che nel settore medico e veterinario vengono utilizzati metalli di vario genere per costruire manufatti che debbono essere impiantati nel corpo umano e animale, allo scopo di sostituire parti della struttura ossea o per integrarne la funzionalità. It is known that in the medical and veterinary sector various kinds of metals are used to build artifacts that must be implanted in the human and animal body, in order to replace parts of the bone structure or to integrate its functionality.
Questi manufatti, denominate tecnicamente protesi, devono presentare caratteristiche tali da poter essere posti a contatto diretto con i tessuti e gli organi, senza che da questo contatto sorgano fenomeni che portano al fallimento delle protesi : tra questi fenomeni, sono determinanti le formazioni di colonizzazioni batteriche. These artifacts, technically called prostheses, must have characteristics such as to be able to be placed in direct contact with the tissues and organs, without causing phenomena that lead to the failure of the prostheses to arise from this contact: among these phenomena, the formations of bacterial colonizations are decisive .
I metalli utilizzati per costruire le protesi devono anche avere una elevata resistenza meccanica, ma, nel contempo, devono anche essere bio-compatibili e particolarmente leggeri per non creare nei pazienti condizioni di grave disagio determinato dalla stessa applicazione delle protesi che sono sentite come corpi estranei. The metals used to build the prostheses must also have a high mechanical strength, but, at the same time, they must also be bio-compatible and particularly light in order not to create severe discomfort in patients caused by the very application of the prostheses that are felt as foreign bodies. .
Uno dei metalli maggiormente utilizzato per realizzare protesi è il titanio che presenta una resistenza meccanica sostanzialmente pari a quella delle ossa ed una leggerezza tale da limitare sensibilmente i fastidi ai pazienti dovuti agli impianti delle protesi. One of the metals most used to make prostheses is titanium which has a mechanical resistance substantially equal to that of bones and a lightness that significantly limits the discomfort to patients due to the implants of the prostheses.
3 Inoltre, il titanio è anche dotato di alta compatibilità biologica e questa caratteristica limita il verificarsi di infezioni che possono portare al fallimento delle protesi. 3 Furthermore, titanium is also endowed with high biological compatibility and this characteristic limits the occurrence of infections that can lead to the failure of the prostheses.
Tuttavia, il titanio non possiede in sé caratteristiche antibatteriche, ma le protesi realizzate con questo materiale sono naturalmente provviste di uno strato di rivestimento di biossido di titanio che, se sottoposto ad un trattamento fotocatalitico, presenta, invece, buone caratteristiche antibatteriche ed antivirali, essendo in grado di modificare la membrana cellulare dei batteri e dei virus che sono colonizzati sulle superfici delle protesi. However, titanium does not possess antibacterial characteristics in itself, but the prostheses made with this material are naturally provided with a layer of titanium dioxide coating which, if subjected to a photocatalytic treatment, instead has good antibacterial and antiviral characteristics, being able to modify the cell membrane of bacteria and viruses that are colonized on the surfaces of the prostheses.
Tuttavia, si è notato che l'azione antibatterica e antivirale del biossido di titanio risulta di lenta attivazione ed è limitata nel tempo e per queste due ragioni è possibile che batteri e virus possano comunque attaccarsi e stazionare sulle superfici delle protesi, generando ugualmente colonie che portano nel tempo alla nascita dei fenomeni infettivi ed infiammatori precedentemente ricordati. However, it has been noted that the antibacterial and antiviral action of titanium dioxide is slow to activate and is limited in time and for these two reasons it is possible that bacteria and viruses can still attach themselves and stay on the surfaces of the prostheses, equally generating colonies that lead over time to the birth of the previously mentioned infectious and inflammatory phenomena.
Per ovviare a questi inconvenienti, sono stati impiegati ossidi cristallini di titanio che permettono a questo metallo di essere maggiormente reattivo ai trattamenti fotocatalitici. Tuttavia, anche in questo caso, non si sono avuti risultati particolarmente vantaggiosi poiché non si è potuto stabilire con precisione il comportamento di questi ossidi cristallini quando il trattamento di irraggiamento che attiva i processi fotocatalitici viene interrotto, ossia se questi mantengano oppure no la loro capacità antibatterica ed antivirale in grado di eliminare batteri e virus già colonizzati. To overcome these drawbacks, crystalline titanium oxides have been used which allow this metal to be more reactive to photocatalytic treatments. However, even in this case, particularly advantageous results have not been obtained since it has not been possible to precisely establish the behavior of these crystalline oxides when the radiation treatment that activates the photocatalytic processes is interrupted, i.e. whether or not they maintain their capacity. antibacterial and antiviral able to eliminate already colonized bacteria and viruses.
Secondo un'altra tecnica nota, il biossido di titanio è stato modificato utilizzando diversi elementi quali il calcio, l'azoto, il fluoro, l'argento, il rame, lo stagno, il vanadio, l'oro. Anche in questo caso, i risultati ottenuti sono stati insoddisfacenti per evitare la formazione di infezioni ed infiammazioni dei tessuti a diretto contatto con le superfici delle protesi. According to another known technique, titanium dioxide has been modified using various elements such as calcium, nitrogen, fluorine, silver, copper, tin, vanadium, gold. Also in this case, the results obtained were unsatisfactory to avoid the formation of infections and inflammation of the tissues in direct contact with the surfaces of the prostheses.
Uno scopo dell'invenzione è di migliorare lo stato della tecnica. An object of the invention is to improve the state of the art.
Un altro scopo è di mettere a punto un metodo per rendere antibatteriche ed antivirali in modo costante superfìci di manufatti metallici destinati ad impieghi medicali o veterinari, come, ad esempio le protesi, che sia in grado di prevenire la formazione di colonie di batteri e virus su queste superfìci, senza permettere che questi batteri e virus abbiano il tempo di aderire alle protesi. Another purpose is to develop a method to constantly make the surfaces of metal products intended for medical or veterinary use antibacterial and antiviral, such as, for example, prostheses, which is able to prevent the formation of colonies of bacteria and viruses. on these surfaces, without allowing these bacteria and viruses to have time to adhere to the prostheses.
Secondo un aspetto dell'invenzione è previsto un metodo adatto per rendere antibatteriche e/o antivirali superfìci di manufatti metallici destinati ad impieghi medicali caratterizzato dal fatto che comprende: applicare su dette superfìci una barriera inorganica inospitale per batteri e virus, in modo tale che detta barriera inorganica impedisca l'adesione a dette superfìci di batteri e virus; rendere stabile detto applicare. Pertanto, il metodo consente di preparare le superfìci dei manufatti in modo che l'adesione di batteri e virus sia prevenuta, cioè che questi non possano aderirvi ed aggregarsi tra loro per formare colonie infettive. According to an aspect of the invention, a suitable method is provided for making antibacterial and / or antiviral surfaces of metal products intended for medical uses characterized in that it comprises: applying on said surfaces an inorganic barrier inhospitable for bacteria and viruses, so that said inorganic barrier prevents bacteria and viruses from adhering to said surfaces; stabilize said apply. Therefore, the method allows to prepare the surfaces of the manufactured articles so that the adhesion of bacteria and viruses is prevented, that is, that they cannot adhere to them and aggregate together to form infectious colonies.
Ulteriori caratteristiche e vantaggi dell'invenzione saranno maggiormente evidenti dalla descrizione di un esempio non limitativo di attuazione di un metodo per rendere antibatteriche ed antivirali superfìci di manufatti metallici destinati ad impieghi medicali, indicato di seguito. Further characteristics and advantages of the invention will become more evident from the description of a non-limiting example of implementation of a method for making antibacterial and antiviral surfaces of metal articles intended for medical uses, indicated below.
ESEMPI0 1. EXAMPLES0 1.
Nella esecuzione del metodo secondo questo esempio, sono stati utilizzati campioni di substrati di titanio in forma di placche aventi dimensioni di cm. 1 x 1 e spessore di circa cm. 0,3. In carrying out the method according to this example, samples of titanium substrates in the form of plates having dimensions of cm. 1 x 1 and thickness of about cm. 0.3.
a) - Lavaggio. a) - Washing.
In una prima fase, le superfìci delle placche in titanio vengono sottoposte a: In a first step, the surfaces of the titanium plates are subjected to:
- pulizia con getti di aria compressa; - cleaning with compressed air jets;
- lavaggio con ultrasuoni in acqua distillata per un tempo di circa 15 minuti; - ultrasonic washing in distilled water for about 15 minutes;
- ulteriore doppio lavaggio con ultrasuoni in acetone per 15 minuti ogni volta; - asciugatura in un apparecchio di asciugatura e ad una temperatura di circa 40C°. - further double ultrasonic washing in acetone for 15 minutes each time; - drying in a drying machine and at a temperature of about 40C °.
b) - Trattamento UV. b) - UV treatment.
In una seconda fase, le placche vengono esposte a radiazioni Ultraviolette, eventualmente integrate con radiazioni infrarosse, con una potenza di 300 Watt, vengono quindi immersi in acqua distillata per un tempo complessivo di circa tre ore, e ciascuna faccia delle placche viene esposta a radiazioni ogni 30 minuti, in modo da ottenere un irraggiamento completo su tutte le placche. In a second phase, the plates are exposed to Ultraviolet radiation, possibly integrated with infrared radiation, with a power of 300 Watt, they are then immersed in distilled water for a total time of about three hours, and each face of the plates is exposed to radiation. every 30 minutes, in order to obtain a complete irradiation on all the plates.
Quando è completato l’irraggiamento, le placche vengono risciacquate con acqua deionizzata. When irradiation is completed, the plates are rinsed with deionized water.
c) - Modifica con zinco. c) - Modification with zinc.
In una terza fase, si preparano separatamente due soluzioni differenti: una prima soluzione con 500 mi di soluzione di cloruro di ammonio 4M ed un’altra soluzione con cloruro di zinco 0,4M. In a third step, two different solutions are prepared separately: a first solution with 500 ml of 4M ammonium chloride solution and another solution with 0.4M zinc chloride.
Quindi, si miscelano le due soluzioni ed il pH viene portato al valore 6,9, aggiungendo ammoniaca fino a raggiungere il volume di 1 litro. Then, the two solutions are mixed and the pH is brought to 6.9, adding ammonia until reaching the volume of 1 liter.
d) - Trattamento delle placche. d) - Treatment of plaques.
Le placche in titanio, irradiati con i raggi UV, vengono immersi in 100ml della soluzione contenete zinco per un tempo di circa 5 minuti. The titanium plates, irradiated with UV rays, are immersed in 100ml of the zinc-containing solution for about 5 minutes.
Nel caso specifico, le placche vengono mantenute in posizione verticale in modo tale che entrambe le facce possano essere esposte alla soluzione. In this specific case, the plates are kept in vertical position so that both faces can be exposed to the solution.
Questa immersione viene eseguita a temperatura ambiente e mantenendo le superfici esposte alla luce. This immersion is done at room temperature and keeping the surfaces exposed to light.
Quando il trattamento in immersione è completato, le placche sono sottoposte ad un ciclo di tre lavaggi con acqua deionizzata per eliminare eventuali componenti non adsorbiti alla superficie. When the immersion treatment is completed, the plates are subjected to a cycle of three washes with deionized water to eliminate any components not adsorbed on the surface.
Completati i tre lavaggi, le placche vengono asciugate in un apparecchio riscaldante ad una temperatura di circa 40C°. Once the three washes have been completed, the plates are dried in a heating device at a temperature of about 40C °.
Claims (31)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMO20060170 ITMO20060170A1 (en) | 2006-05-31 | 2006-05-31 | METHOD FOR MAKING ANTIBACTERIAL AND ANTIVIRAL SURFACES OF METALLIC MANUFACTURED PRODUCTS FOR MEDICAL USE |
PCT/IB2007/001386 WO2007138446A2 (en) | 2006-05-31 | 2007-05-28 | Method for making antibacterial and antiviral the surfaces of metal products intended for medical uses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMO20060170 ITMO20060170A1 (en) | 2006-05-31 | 2006-05-31 | METHOD FOR MAKING ANTIBACTERIAL AND ANTIVIRAL SURFACES OF METALLIC MANUFACTURED PRODUCTS FOR MEDICAL USE |
Publications (1)
Publication Number | Publication Date |
---|---|
ITMO20060170A1 true ITMO20060170A1 (en) | 2007-12-01 |
Family
ID=38779042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMO20060170 ITMO20060170A1 (en) | 2006-05-31 | 2006-05-31 | METHOD FOR MAKING ANTIBACTERIAL AND ANTIVIRAL SURFACES OF METALLIC MANUFACTURED PRODUCTS FOR MEDICAL USE |
Country Status (2)
Country | Link |
---|---|
IT (1) | ITMO20060170A1 (en) |
WO (1) | WO2007138446A2 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0208642D0 (en) * | 2002-04-16 | 2002-05-22 | Accentus Plc | Metal implants |
DE10243132B4 (en) * | 2002-09-17 | 2006-09-14 | Biocer Entwicklungs Gmbh | Anti-infective, biocompatible titanium oxide coatings for implants and methods of making them |
ITBO20040653A1 (en) * | 2004-10-22 | 2005-01-22 | Guya Bioscience S R L | METHOD FOR THE PREPARATION OF ENDOSSEAN PLANTS WITH HIGH OSTEOINTEGRATION THROUGH FILMS THIN SURFACE OF ANATASIO |
-
2006
- 2006-05-31 IT ITMO20060170 patent/ITMO20060170A1/en unknown
-
2007
- 2007-05-28 WO PCT/IB2007/001386 patent/WO2007138446A2/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2007138446A3 (en) | 2009-03-19 |
WO2007138446A2 (en) | 2007-12-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Wang et al. | Silk fibroin film-coated MgZnCa alloy with enhanced in vitro and in vivo performance prepared using surface activation | |
Kumar et al. | A comprehensive review on techniques to create the anti-microbial surface of biomaterials to intervene in biofouling | |
Erakovic et al. | Corrosion stability and bioactivity in simulated body fluid of silver/hydroxyapatite and silver/hydroxyapatite/lignin coatings on titanium obtained by electrophoretic deposition | |
Myakinin et al. | In vitro evaluation of electrochemically bioactivated Ti6Al4V 3D porous scaffolds | |
Zhang et al. | Sr/ZnO doped titania nanotube array: an effective surface system with excellent osteoinductivity and self-antibacterial activity | |
CN101880874B (en) | Method for improving surface hydrophilicity of medical titanium or titanium alloy | |
Xiang et al. | Surface modification of pure zinc by acid etching: accelerating the corrosion rate and enhancing biocompatibility and antibacterial characteristics | |
Dong et al. | Fabrication of ZnO nanotube layer on Zn and evaluation of corrosion behavior and bioactivity in view of biodegradable applications | |
CN105220451B (en) | Preparation method with antibacterial and the polyethylene terephthalate braided material for promoting mineralization function coating | |
Gopi et al. | Development of lotus-like hydroxyapatite coating on HELCDEB treated titanium by pulsed electrodeposition | |
CN102793947B (en) | Degradable magnesium and surface modification method of alloy thereof | |
Wei et al. | Structures, bonding strength and in vitro bioactivity and cytotoxicity of electrochemically deposited bioactive nano-brushite coating/TiO2 nanotubes composited films on titanium | |
CN109848546A (en) | A kind of titanium or titanium alloy surface micro-nano structure method of modifying | |
US20160143709A1 (en) | Implant coating material for enhancing a bioactivity and osseointegration of implant surface, and the method for manufacturing and storing the same | |
Han et al. | Light-assisted therapy for biofilm infected micro-arc oxidation TiO2 coating on bone implants | |
Sultana et al. | Surface engineering strategies to enhance the in situ performance of medical devices including atomic scale engineering | |
Erdogan et al. | Anodized nanostructured 316L stainless steel enhances osteoblast functions and exhibits anti-fouling properties | |
Park et al. | Nanoscale Topography of Anodic TiO2 Nanostructures Is Crucial for Cell–Surface Interactions | |
CN105797208A (en) | Degradable metal implant for repairing skull and preparation method thereof | |
TW201720472A (en) | Surface-modified dental material having properties of anti-bacteria and stimulating cell growth and manufacturing method thereof | |
ITMO20060170A1 (en) | METHOD FOR MAKING ANTIBACTERIAL AND ANTIVIRAL SURFACES OF METALLIC MANUFACTURED PRODUCTS FOR MEDICAL USE | |
JP5535647B2 (en) | Metal implant | |
CN103628112B (en) | A kind of preparation method of titanium based titanium oxide silver chloride composite coating material | |
Shanaghi et al. | Enhanced corrosion resistance and reduced cytotoxicity of the AZ91 Mg alloy by plasma nitriding and a hierarchical structure composed of ciprofloxacin‐loaded polymeric multilayers and calcium phosphate coating | |
JP2010515513A5 (en) |