Biodegradable intravascular stent and production method thereof
The invention provides a biodegradable intravascular stent and a production method thereof. The biodegradable intravascular stent is characterized in that the biodegradable intravascular stent comprises an annular net structure made of biodegradable fiber braided threads; the annular net structure i...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a biodegradable intravascular stent and a production method thereof. The biodegradable intravascular stent is characterized in that the biodegradable intravascular stent comprises an annular net structure made of biodegradable fiber braided threads; the annular net structure is composed of a plurality of rows of wavy structures; each row of wavy structure is composed of a plurality of V-shaped structure units; every two rows of wavy structures are parallel to each other; the endpoint in the middle of each V-shaped structure unit is connected with the endpoint in the middle of the symmetrical V-shaped structure unit in the adjacent row once every other two non-joint points to form a joint point. The biodegradable intravascular stent low in axial shortening rate can radially deform greatly due to the annular net structure, and the V-shaped structure units of two adjacent rows are connected once every other two non-joint points, so that the length of the stent is not changed greatly under |
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