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Eccentric system of abrasive elements with equal mass for rotational atherectomy

  • US 10,064,646 B2
  • Filed: 02/27/2018
  • Issued: 09/04/2018
  • Est. Priority Date: 09/17/2012
  • Status: Active Grant
First Claim
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1. A rotational atherectomy device, comprising:

  • a flexible, elongated and rotatable drive shaft, the drive shaft comprising a rotational axis;

    an eccentric system of abrasive elements comprising;

    a first abrasive element fixedly disposed along on the drive shaft and comprising a mass and a center of mass having a location that is spaced radially away from the rotational axis of the drive shaft in a direction along a first longitudinal plane located at a first rotational angle position;

    a second abrasive element fixedly disposed along on the drive shaft and spaced proximally from the first abrasive element and comprising a mass and a center of mass having a location that is spaced radially away from the rotational axis of the drive shaft in a direction along a second longitudinal plane that is spaced rotationally a distance from the first longitudinal plane; and

    a third abrasive element fixedly disposed along on the drive shaft and spaced distally from the first abrasive element and comprising a mass and a center of mass having a location that is spaced radially away from the rotational axis of the drive shaft in a direction along a third longitudinal plane that is rotationally spaced a distance from the second longitudinal plane,wherein the mass of the first abrasive element, the mass of the second abrasive element and the mass of the third abrasive element are substantially equivalent.

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