Drug coated balloon catheter for arteriovenous shunt

摘要

Problem to be solved: to provide a catheter for an AV shunt capable of easily reaching a target lesion and extending the restenosis completely and reducing the rate of restenosis.The drug coated balloon (DCB) catheter 4 is a shaft 20 having a guide wire tube lumen and an expansion tube lumen extending from the proximal end 24 to the distal end 28 along the axial direction with the connector The shaft is provided with an air injection balloon 48 and includes a fluid coupled to the expansion tube cavity to selectively expand and / or shrink.The balloon is conical and axially symmetrical around the stretching direction, the balloon has an increased diameter from the first end 52 to the second end 56, and the diameter is measured in a cross-sectional plane perpendicular to the extending direction axis The outer surface of the balloon is coated with a medicine to treat restenosis.Diagram