Patent ID: 9706998
Date: 2017-07-18
CPC Classifications: A61B,A61F,A61M

Claim:
1. A method of targeting a second passage from a first passage to effect retroperfusion in the second passage, the method comprising: inserting a first catheter into the first passage, wherein the first passage comprises an artery, the first catheter comprising: inserting a second catheter into the second passage, wherein the second passage comprises a vein, the second catheter comprising: inflating the balloon, wherein inflating the balloon increases a diameter of the second passage; aligning the ultrasound transmitting transducer and the ultrasound receiving transducer; advancing the needle from the first catheter, out of the first passage, and into the second passage to form a fistula between the first passage and the second passage, monitoring at least one of: reduction in pressure of the balloon and release of contrast from the balloon, advancing a guidewire from the first passage, through the needle, and into the second passage; and deploying a stent graft,