摘要:
An endoprosthesis includes a carrier structure which contains a metallic material. The metallic material contains a magnesium alloy of the following composition: magnesium: >90%, yttrium: 3.7%-5.5%, rare earths: 1.5%-4.4% and balance:
摘要:
The invention concerns an endovascular implant comprising a biodegradable material and having a tubular main body which is open at the ends and which is dilatable from an unexpanded condition into an expanded condition. The implant is so designed that when the implant in the expanded condition is subjected to a radially acting compression pressure in the range of between 5 and 30 kPa (0.05-0.3 bar) a cross-sectional area of the implant is reduced to 70% or less of the original cross-sectional area, or an internal volume of the implant is reduced to 70% or less of the original internal volume.
摘要:
The invention concerns an endovascular implant comprising a biodegradable material and having a tubular main body which is open at the ends and which is dilatable from an unexpanded condition into an expanded condition. The implant is so designed that when the implant in the expanded condition is subjected to a radially acting compression pressure in the range of between 5 and 30 kPa (0.05-0.3 bar) a cross-sectional area of the implant is reduced to 70% or less of the original cross-sectional area, or an internal volume of the implant is reduced to 70% or less of the original internal volume.
摘要:
The invention concerns inter alia an implant for vessel ligature, the implant which comprises an alloy, wherein the alloy is at least partially biodegradable, and wherein the alloy comprises: greater than 87% magnesium; from about 3% to about 6% yttrium; from about 1% to about 5% lanthanide; and a balance of about 0.0% to about 2%.
摘要:
An x-ray marker for medical implants made of a biocorrodible metallic material, the x-ray marker comprises a boride or carbide of the elements tantalum or tungsten.
摘要:
An endoprosthesis, in particular an intraluminal endoprosthesis such as a stent, comprises a carrier structure, which includes at least one component comprising a magnesium alloy of the following composition: Rare earth metals: between about 2.0 and about 5.0% by weight, with neodymium between about 1.5 and about 3.0% by weight Yttrium: between about 3.5% and about 4.5% by weight Zirconium: between about 0.3% and about 1.0% by weight Balance: between 0 and about 0.5% by weight wherein magnesium occupies the proportion by weight that remains to 100% by weight in the alloy.
摘要:
A magnesium alloy having Y, Zn, Ca, Mn, Ag, Ce, Zr, or Si. The alloy is distinguished in that, in the event of suitable treatment, the alloy is convertible into a very fine-grained microstructure, in particular, having grain sizes less than 20 μm. The alloy components are not or are hardly toxicologically relevant.
摘要:
A magnesium alloy, comprising: Y:0.5-10 Zn:0.5-6 Ca:0.05-1 Mn: 0-0.5 Ag:0-1 Ce:0-1 Zr:0-1 or Si: 0-0.4, wherein the amounts are based on weight-percent of the alloy and Mg, and manufacturing-related impurities constitute the remainder of the alloy to a total of 100 weight-percent. Also disclosed is a method for manufacturing such an alloy and a biodegradable implant formed therefrom.
摘要:
A magnesium alloy, comprising: Y:0.5-10 Zn:0.5-6 Ca:0.05-1 Mn: 0-0.5 Ag:0-1 Ce:0-1 Zr:0-1 or Si: 0-0.4, wherein the amounts are based on weight-percent of the alloy and Mg, and manufacturing-related impurities constitute the remainder of the alloy to a total of 100 weight-percent. Also disclosed is a method for manufacturing such an alloy and a biodegradable implant formed therefrom.