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Eccentric drive shaft for atherectomy device and method for manufacture

  • US 6,638,288 B1
  • Filed: 04/18/2000
  • Issued: 10/28/2003
  • Est. Priority Date: 08/14/1997
  • Status: Expired due to Term
First Claim
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1. A rotational atherectomy device comprising a flexible, elongated, rotatable drive shaft having a rotational axis and an asymmetrical enlarged diameter section, at least part of the asymmetrical enlarged diameter section having a tissue removing surface defining a tissue removing segment of the drive shaft, the tissue removing segment being shaped such that an outer surface of each wire turn of the tissue removing segment includes a point that is collinear with a point on the outer surface of each other wire turn of the tissue removing segment, such points defining a straight line which is parallel to the rotational axis of the drive shaft.

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