Puncture needle, puncture catheter provided with puncture needle, and catheter system provided with puncture catheter

Abstract

A puncture needle is a medical puncture needle having a longitudinal direction and including a tubular member having an inner cavity extending in the longitudinal direction of the puncture needle and a helical member in which a wire is wound helically around the tubular member. A distal end portion of the wire and the tubular member are not fixed to each other, or the distal end portion of the wire and the tubular member are not in contact with each other. A puncture catheter includes the puncture needle, and a catheter system includes the puncture catheter.

Dependencies are inferred from the claim text.