DEVICES, SYSTEMS AND METHODS FOR A PILOTING TIP BUSHING FOR ROTATIONAL ATHERECTOMY

摘要

A high-speed rotational atherectomy device for opening a stenosis in an artery having a given diameter, comprising: a guide wire; a flexible elongated, rotatable drive shaft advanceable over the guide wire, the drive shaft having a proximal end and a distal end; and a piloting element fixedly attached to the drive shaft. When the piloting element is advanced to a stenosis, the piloting element creates a piloting hole when the drive shaft is rotated.

主权项

1. A device, comprising:
a guide wire; an elongated flexible drive shaft advanceable over the guide wire, the drive shaft comprising:
a pre-bent distal section extending proximally from a distal end of the drive shaft, wherein:
at least that portion of the distal section not traversed by the guide wire comprises a curvilinear profile; andat least that portion of the distal section traversed by the guide wire comprises a substantially linear profile;a piloting element fixedly attached to at least a portion of the distal section; andan abrading element fixedly attached to the drive shaft proximal of the distal section.