Septotomy Catheter For Aortic Dissection

摘要

Medical methods and devices for treating aortic dissections. A catheter-based cutting device permits cutting a septum of acute or chronic aortic dissections, in a retrograde manner. The catheter includes a base section having a central lumen therethrough, two flexible arms extending from a distal end thereof, where each arm has a channel therethrough for a passage of a guide wire. With distal ends of the two flexible arms separated, the two arms form a Y-shape with the base section. With distal ends of the two flexible arms together, the two arms have a longitudinal profile, about a periphery thereof, identical to a longitudinal profile of the base section. A non-mechanically actuated cutting component resides between the two arms in a vicinity of the distal end of the base section. The cutting component faces distally outward between the two arms with the distal ends of the two flexible arms separated.

主权项

1. A septotomy catheter, comprising:
a base section having a central lumen therethrough; two flexible arms extending from a distal end of the base section, each arm having a channel therethrough for a passage of a guide wire, wherein:
with distal ends of the two flexible arms separated, the two arms form a Y-shape with the base section;with distal ends of the two flexible arms together, the two arms have a longitudinal profile, about a periphery thereof, identical to a longitudinal profile of the base section; a cutting component residing between the two arms adjacent to the distal end of the base section, wherein:
the cutting component faces distally and spans the two flexible arms when separated, residing perpendicularly to a longitudinal axis of the catheter;the two arms each further comprise a notch therein, each notch housing a respective end of the cutting component, each notch providing that the respective end of the cutting component is not exposed outside the catheter when the two arms are separated;the two arms, with distal ends together, completely house the cutting component therein, whereby no part of the cutting component is exposed outside the catheter.