| abstract |
This invention discloses a vessel stent which is inserted into a vessel such as a blood vessel and retains the shape of the vessel, and a vessel stent insertion device. The vessel stent consists of filaments of continuous in-vivo absorbable polymer fiber, and the filaments are so shaped as to extend in zigzag along the peripheral surface of a cylindrical member, a tubular member, etc. Examples of the in-vivo absorbable polymer are polylactic acid, polyglycolic acid, polyglactin, polydioxanone, polyglyconate, and copolymers between the polyglycolic acid or polylactic acid and ε-caprolactone. The vessel stent insertion device puts the vessel stent over a balloon formation portion near the distal end of a catheter and bonds it by a biocompatible material such as the biodegradable polymer (e.g. polylactic acid), water-soluble protein, fibrin paste. |