Thread for vascular stent and vascular stent using the thread
AssigneeKabushikikaisha Igaki Iryo Sekkei
InventorKeiji Igaki
Life of this patent
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Abstract
A thread (1) for forming a vascular stent implanted in vessels. This thread is formed by melt-spinning a biodegradable polymer. On the surface of the thread, there is formed a layer (2) of a drug-containing biodegradable polymer of the same sort as the biodegradable polymer constituting the thread.
Claims35
1-34. (canceled)
A thread for a vascular stent, implanted in vessels, the thread being formed by melt-spinning a first biodegradable polymer, wherein a layer of a second biodegradable polymer that contains a drug is formed on a thread surface, and wherein the first and second biodegradable polymers are composed of substantially the same biodegradable polymer.
A thread for a vascular stent, implanted in vessels, the thread being formed by mixing a drug into a first biodegradable polymer and by melt-spinning the resulting biodegradable polymer, wherein a drug-containing layer of a second biodegradable polymer that is substantially the same as the first biodegradable polymer is formed on a thread surface.
A vascular stent implantable in vessels of a living body, comprising:
- a main stent body formed by threads of a biodegradable polymer for a stent for vessels which are wound to a tube as each of the threads is bent in a zigzag design and is enlarged or contracted in diameter with the bends of the threads as displacing portions;
- wherein the threads constituting the main stent body are formed by melt-spinning a biodegradable polymer, and a layer of a biodegradable polymer containing a drug that is substantially the same as the biodegradable polymer constituting the threads is formed on the surface of the threads.
A vascular stent implantable in vessels of a living body, comprising:
- a main stent body formed by threads of a biodegradable polymer for a stent for vessels which are wound to a tube as each of the threads is bent in a zigzag design and is enlarged or contracted in diameter with the bends of the threads as displacing portions;
- wherein the threads constituting the main stent body are formed by melt-spinning a drug-containing biodegradable polymer, and a layer of a biodegradable polymer containing a drug that is substantially the same as the biodegradable polymer constituting the threads is formed on a surface of the threads.
Dependencies are inferred from the claim text.