Patent ID: 9642991
Date: 2017-05-09
CPC Classifications: A61M

Claim:
1. A method for performing a medical procedure within a patient's body, the body comprising a thoracic duct including a terminal valve and an ostium communicating with a patient's venous system of the patient's body, comprising: introducing a distal portion of a tubular member through the patient's venous system into a body lumen adjacent the terminal valve and ostium of the thoracic duct, the distal portion biased to a curvilinear configuration; manipulating the tubular member until a distal tip of the distal portion enters the ostium of the thoracic duct; further manipulating the tubular member to direct the distal portion into the thoracic duct until an expandable member on the distal portion passes through the terminal valve; expanding the expandable member within the thoracic duct beyond the terminal valve to substantially isolate the thoracic duct from the body lumen; and performing a medical procedure via the thoracic duct, wherein the expandable member comprises a first balloon, the method further comprising expanding a second balloon on the distal portion adjacent the first balloon.