Patent ID: 7766894

Claim:
A method of performing a medical procedure using a coaxial catheter arrangement including an outer catheter having a proximal balloon, and an inner catheter having a distal balloon, the method comprising the steps of: a) introducing the coaxial catheter arrangement within an anatomical vessel of a patient; b) inflating the proximal balloon to anchor the outer catheter within the anatomical vessel; c) after inflating the proximal balloon, linearly translating the inner catheter relative to the outer catheter within the anatomical vessel in the distal direction; d) after linearly translating the inner catheter relative to the outer catheter, inflating the distal balloon to anchor the inner catheter within the anatomical vessel; e) after inflating the distal balloon, deflating the proximal balloon to release the outer catheter from the anatomical vessel; f) after deflating the proximal balloon, linearly translating the outer catheter relative to the inner catheter within the anatomical vessel in the distal direction; and g) after linearly translating the outer catheter relative to the inner catheter, deflating the distal balloon to release the inner catheter from the anatomical vessel, wherein the steps b) to g) are performed automatically.