DE29603027U1 - Temporary or permanent implant made of a metal alloy - Google Patents
Temporary or permanent implant made of a metal alloyInfo
- Publication number
- DE29603027U1 DE29603027U1 DE29603027U DE29603027U DE29603027U1 DE 29603027 U1 DE29603027 U1 DE 29603027U1 DE 29603027 U DE29603027 U DE 29603027U DE 29603027 U DE29603027 U DE 29603027U DE 29603027 U1 DE29603027 U1 DE 29603027U1
- Authority
- DE
- Germany
- Prior art keywords
- metal alloy
- implant
- metal
- temporary
- alloy
- 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.)
- Expired - Lifetime
Links
- 239000007943 implant Substances 0.000 title claims description 17
- 229910001092 metal group alloy Inorganic materials 0.000 title claims description 10
- 230000000711 cancerogenic effect Effects 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 231100000315 carcinogenic Toxicity 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001257 Nb alloy Inorganic materials 0.000 claims description 2
- RJSRQTFBFAJJIL-UHFFFAOYSA-N niobium titanium Chemical compound [Ti].[Nb] RJSRQTFBFAJJIL-UHFFFAOYSA-N 0.000 claims description 2
- 231100000252 nontoxic Toxicity 0.000 claims 1
- 230000003000 nontoxic effect Effects 0.000 claims 1
- 231100000331 toxic Toxicity 0.000 claims 1
- 230000002588 toxic effect Effects 0.000 claims 1
- 210000004394 hip joint Anatomy 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 241000309551 Arthraxon hispidus Species 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 210000001981 hip bone Anatomy 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
-
- 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
- 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
- A61L27/306—Other specific inorganic materials not covered by A61L27/303 - A61L27/32
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
- A61F2002/30672—Features concerning an interaction with the environment or a particular use of the prosthesis temporary
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3611—Heads or epiphyseal parts of femur
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/365—Connections of heads to necks
-
- 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
- A61F2310/00035—Other metals or alloys
- A61F2310/00053—Vanadium or V-based 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
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
- A61F2310/00407—Coating made of titanium or of Ti-based alloys
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials For Medical Uses (AREA)
- Inorganic Chemistry (AREA)
- Dermatology (AREA)
- Epidemiology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Medicinal Chemistry (AREA)
Description
PATENTANWÄLTEPATENT ATTORNEYS
Dipl.-Ing. Sigurd Leine ■ Dipl.-Phys. Dr. Norbert König zugelassen beim Europäischen Patentamt European Patent AttorneysDipl.-Ing. Sigurd Leine ■ Dipl.-Phys. Dr. Norbert König admitted to the European Patent Office European Patent Attorneys
BurckhardtstraSe 1 Telefon (0511) 62 30 05Burckhardtstrasse 1 Telephone (0511) 62 30 05
D-30163 Hannover Telefax (0511) 62 21 05D-30163 Hanover Fax (0511) 62 21 05
Unser Zeichen DatumOur sign date
Werner Scholz 066/006 12.02.1996Werner Scholz 066/006 12.02.1996
si /nisi /ni
Temporäres oder permanentes Implantat aus einer MetallegierungTemporary or permanent implant made of a metal alloy
Die Erfindung betrifft ein temporäres oder permanentes Implantat aus einer Metallegierung.The invention relates to a temporary or permanent implant made of a metal alloy.
Durch die Firmendruckschrift "cera-nox Titan-Niob-Metall/Keramik-Verbund tiefengehärtete Hüftgelenkköpfe" der Firma o.m.t. GmbH, Lübeck, ist ein Hüftgelenkkopf für eine Hüftgelenkprothese bekannt, der eine kegelige Ausnehmung aufweist, mit der der Hüftgelenkkopf auf ein komplementär konisch ausgebildetes Ende eines in einen Oberschenkelknochen einsetzbaren Verankerungsteiles aufsetzbar ist. Der Kugelkopf dient zum Zusammenwirken mit einer künstlichen Hüftgelenkpfanne, die eine Außenschale aufweist, die in eine vorbereitete Ausnehmung im Hüftknochen einsetzbar und dort verankerbar ist und die eine Innenschale aus Polyäthylen aufweist, die eine komplementär zu dem Kugelkopf ausgebildete kugelförmige Ausnehmung aufweist· Der Kugelkopf bildet dann zusammen mit dieser Hüftgelenkpfanne ein universal-gelenkiges Hüftgelenk.The company brochure "cera-nox titanium-niobium-metal/ceramic composite deep-hardened hip joint heads" from o.m.t. GmbH, Lübeck, describes a hip joint head for a hip joint prosthesis that has a conical recess with which the hip joint head can be placed on a complementary conical end of an anchoring part that can be inserted into a femur. The ball head is used to work together with an artificial hip joint socket, which has an outer shell that can be inserted into a prepared recess in the hip bone and anchored there and which has an inner shell made of polyethylene that has a spherical recess that is complementary to the ball head. The ball head then forms a universally articulated hip joint together with this hip joint socket.
In der genannten Firmendruckschrift ist ausgeführt, daß aufgrund des hohen Härteunterschiedes zwischen Kugeloberfläehe und Polyäthylen erhebungsfreie, glatte Oberflächen erforderlich sind, um einen minimalen Abrieb des Polyäthylens der Lagerschale zu sichern. Um die große Härte der Kugeloberfläche zu erzielen und eine äußerst glatte Oberfläche durch Hochglanzpolieren zu ermöglichen, ist dieser bekannte Hüftgelenkkopf mit einer Titan-Niob-Keramik-Schicht beschichtet.The company brochure mentioned above states that due to the high difference in hardness between the ball surface and polyethylene, smooth surfaces without bumps are required in order to ensure minimal abrasion of the polyethylene of the bearing shell. In order to achieve the high hardness of the ball surface and to enable an extremely smooth surface through high-gloss polishing, this well-known hip joint head is coated with a titanium-niobium-ceramic layer.
Über die Beschaffenheit der Oberfläche des Verankerungsteiles, für das dieser bekannte Hüftgelenkkopf bestimmt ist, enthält diese Firmendruckschrift nichts.This company brochure contains nothing about the nature of the surface of the anchoring part, for which this known femoral head is intended.
Allgemein bekannte Verankerungsteile für Endoprothesen bestehen aus einer Metallegierung, die Bestandteile enthält, die krebserregend sind oder sein können. Ein solcher krebserregender Legierungsbestandteil ist z.B. Vanadium. Die Verwendung solcher Implantate ist daher nachteilig.Commonly known anchoring parts for endoprostheses consist of a metal alloy that contains components that are or could be carcinogenic. One such carcinogenic alloy component is vanadium, for example. The use of such implants is therefore disadvantageous.
Durch Derwent-Ref. (Abstract) 88-087889/13 ist ein Implantat der betreffenden Art bekannt, bei dem die Beschichtung aus einer Legierung besteht, die Vanadium enthält. Die Beschichtung ist also krebserregend und ist deshalb nur an den Stellen verwendet, wo das Implantat höheren Belastungen ausgesetzt ist, also z.B. in Gelenken.Derwent Ref. (Abstract) 88-087889/13 describes an implant of the type in question in which the coating consists of an alloy containing vanadium. The coating is therefore carcinogenic and is therefore only used in places where the implant is exposed to higher loads, e.g. in joints.
Durch Derwent-Ref. (Abstract) 87-194481/28 ist ein Implantat bekannt, dessen Kern aus Titan oder einer Legierung damit besteht. Ein krebserregender Bestandteil ist in der Legierung nicht enthalten, so daß sich das Problem der Krebserregung nicht ergibt. Dieser Vorteil wird durch geringere mechanische Eigenschaften des Kerns erkauft. Zwar wird auch eine Beschichtung verwendet, jedoch nur an den Stellen, an denen eine Abnutzung erfolgen kann, also z.B. an Gelenkstellen. Derwent Ref. (Abstract) 87-194481/28 describes an implant whose core is made of titanium or an alloy with it. The alloy does not contain a carcinogenic component, so the problem of carcinogenicity does not arise. This advantage is achieved at the expense of the core's lower mechanical properties. A coating is also used, but only in places where wear can occur, e.g. at joints.
Durch Patents Abstr. of Japan G-895, 18.12.1991, Vol. 15/ No. 500 ist ein Implantat bekannt, das ähnlich dem zuvor genannten Implantat aufgebaut ist, bei dem also der Kern keine krebserregenden Bestandteile aufweist. Das Gleiche gilt für das Implantat nach EP 0 640 353 A2.An implant is known from Patents Abstr. of Japan G-895, 18.12.1991, Vol. 15/ No. 500 that is constructed similarly to the previously mentioned implant, i.e. the core of which does not contain any carcinogenic components. The same applies to the implant according to EP 0 640 353 A2.
Der Erfindung liegt die Aufgabe zugrunde, ein temporäres oder permanentes Implantat aus einer Metallegierung anzugeben, bei dem eine krebserregende Eigenschaft auch dann ausgeschlossen ist, wenn die Metallegierung einen krebserregenden Legierungsbestandteil enthält.The invention is based on the object of specifying a temporary or permanent implant made of a metal alloy, in which a carcinogenic property is excluded even if the metal alloy contains a carcinogenic alloy component.
Die der Erfindung zugrundeliegende Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Lehre gelöst.The problem underlying the invention is solved by the teaching specified in the characterizing part of claim 1.
Der Grundgedanke dieser Lehre besteht darin, die an sich bekannte Beschichtung aus einem Metall oder einer LegierungThe basic idea of this teaching is to use the known coating of a metal or alloy
auf den Teilen eines Implantates vorzusehen, die mit dem Körpergewebe in Kontakt kommen. Solche Metalle oder Metallegierungen haben keine krebserregenden Eigenschaften und bilden dadurch eine Isolationsschicht, wenn das Implantat selbst eine Metallegierung mit einem krebserregenden Legierungsbestandteil aufweist. Die Beschichtung gemäß der Erfindung dient also nicht wie bei dem bekannten Hüftgelenkkopf zur Verbesserung der Oberflächenhärte oder -glätte, sondern der Vermeidung eines Kontaktes zwischen dem Körpergewebe und dem Implantat. Es werden also lediglich die Isolationseigenschaften der Beschichtung ausgenutzt.on the parts of an implant that come into contact with body tissue. Such metals or metal alloys do not have carcinogenic properties and therefore form an insulating layer if the implant itself contains a metal alloy with a carcinogenic alloy component. The coating according to the invention therefore does not serve to improve the surface hardness or smoothness, as in the case of the known hip joint head, but to prevent contact between the body tissue and the implant. Thus, only the insulating properties of the coating are exploited.
Die Beschichtung kann in an sich bekannter Weise eine Titan-Niob-Legierung sein.The coating can be a titanium-niobium alloy in a conventional manner.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29603027U DE29603027U1 (en) | 1995-06-03 | 1996-02-21 | Temporary or permanent implant made of a metal alloy |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19520467 | 1995-06-03 | ||
| DE29603027U DE29603027U1 (en) | 1995-06-03 | 1996-02-21 | Temporary or permanent implant made of a metal alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29603027U1 true DE29603027U1 (en) | 1996-05-02 |
Family
ID=7763642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29603027U Expired - Lifetime DE29603027U1 (en) | 1995-06-03 | 1996-02-21 | Temporary or permanent implant made of a metal alloy |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE29603027U1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19945049A1 (en) * | 1999-09-20 | 2001-03-22 | Meyer Joerg | Medicinal implant formed from alloy of tungsten, rhenium, osmium or molydenum having pH dependent corrosion rate, useful e.g. for controlled drug release |
| DE10118603A1 (en) * | 2001-04-12 | 2002-10-17 | Gerd Hausdorf | Biodegradable implant, e.g. for sealing defects in blood vessels or the heart, comprises a corrosively degradable tungsten, iron or magnesium alloy support structure bonded with another material |
| US7879367B2 (en) | 1997-07-18 | 2011-02-01 | Alfons Fischer | Metallic implant which is degradable in vivo |
-
1996
- 1996-02-21 DE DE29603027U patent/DE29603027U1/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7879367B2 (en) | 1997-07-18 | 2011-02-01 | Alfons Fischer | Metallic implant which is degradable in vivo |
| DE19945049A1 (en) * | 1999-09-20 | 2001-03-22 | Meyer Joerg | Medicinal implant formed from alloy of tungsten, rhenium, osmium or molydenum having pH dependent corrosion rate, useful e.g. for controlled drug release |
| DE10118603A1 (en) * | 2001-04-12 | 2002-10-17 | Gerd Hausdorf | Biodegradable implant, e.g. for sealing defects in blood vessels or the heart, comprises a corrosively degradable tungsten, iron or magnesium alloy support structure bonded with another material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 19960613 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 19990720 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20020710 |
|
| R158 | Lapse of ip right after 8 years |
Effective date: 20040901 |