Lesion retrieval device and atherectomy device

Abstract

A lesion retrieval device includes a shaft having an elongated outer shape, a spirally-arranged protruding portion spirally protruding from an outer peripheral surface of the shaft, and an outer cylindrical tube having a hollow cylindrical shape and accommodating, inside thereof, part of a proximal end side of the shaft provided with the spirally-arranged protruding portion. The spirally-arranged protruding portion includes a wire rod that is spirally wound around the outer peripheral surface of the shaft, and a surface of the wire rod in a transverse cross section has irregularities.

Dependencies are inferred from the claim text.