Atherectomy device with eccentric crown

摘要

An atherectomy device may include an elongated, flexible drive shaft having a distal end for insertion into a vasculature of a patient and having a proximal end opposite the distal end remaining outside the vasculature of the patient, a handle coupled to the proximal end of the drive shaft for controlling the drive shaft, and a head arranged proximate the distal end of the drive shaft wherein the head may include a middle portion having a substantially uninterrupted outer surface and substantially conically-shaped first and second end portions, wherein the middle portion and substantially conically-shaped end portions all have a bore extending therethrough adapted to frictionally engage a drive shaft.

主权项

1. An atherectomy device, comprising:
an elongated, flexible drive shaft having an outer diameter sized for insertion into a vasculature of a patient and having a proximal end opposite a distal end, the proximal end remaining outside the vasculature of the patient, the drive shaft further comprising a tapered distal tip comprising a length and an outer diameter that is gradually decreasing from the drive shaft's outer diameter as the tapered distal tip extends distally to the distal end of the drive shaft; a handle coupled to the proximal end of the drive shaft for controlling the drive shaft; and a head arranged proximate the distal end of the drive shaft comprising a length that is slightly shorter than the length of the tapered distal tip, the head comprising:
a middle portion having a substantially uninterrupted outer surface; andsubstantially conically-shaped first and second end portions, wherein the substantially conically-shaped end portions comprise a canted base, a truncated peak, and a conical outer surface and wherein the canted base of the first end portion extends from a side of the head opposite a longitudinal bore to a side of the head near the bore and travels through substantially the full height of the first end portion as it extends; andthe bore having a diameter and extending through the middle portion and through the substantially conically-shaped end portions, wherein the bore is adapted to frictionally engage at least a portion of the drive shaft and the tapered distal tip of the drive shaft, and wherein a portion of the tapered distal tip extends outwardly distally from the head.