Patent ID: 8486014

Claim:
A balloon catheter comprising: a catheter shaft having an inflation lumen; a perfusion dilatation balloon mounted on a distal portion of the catheter shaft and being formed from an inflatable tube having a balloon inflation lumen extending therethrough and being in fluid communication with the catheter shaft, wherein in the inflated configuration the tube is coiled into a series of contacting windings that together form an hourglass profile wherein inner surfaces of the coiled windings of the inflatable tube define a lumen of the perfusion dilatation balloon to allow blood flow therethrough, wherein in a deflated configuration, the windings of the inflatable tube are radially collapsed to a reduced profile smaller than the hourglass profile and wherein the lumen of the perfusion dilatation balloon is closed to prevent blood flow therethrough; and one or more guide struts that connect a proximal loop of the perfusion dilatation balloon and the catheter shaft and are operable in the deflated configuration to guide the perfusion balloon into a guide catheter.