| 摘要 |
<p>A torpedo device (1) which is attached to the end of a guide wire (3) to provide a local driving force to the end thereof. The torpedo includes a telescopic structure having a combustion chamber (7) therein. In operation, a combustible fuel is fed to the combustion chamber and an explosion is created by igniting the combustible fuel. Upon explosion, the torpedo expands axially to drive a projectile portion (6) through an obstructed or constricted vessel lumen. Fins (18) can be included on the exterior of the torpedo to prevent backward movement. The fins can also be used to scrape or cut an obstruction by engaging the obstruction and subsequently applying rearward movement to the torpedo.</p> |
