Patent ID: 9332914
Filing Date: 2016-05-10
CPC Classification: A61B,A61M

Claim Text:
1. A method, comprising: inserting a catheter having a coaxial dual lumen portion, including an inner lumen and a surrounding outer lumen that share a common axis, and a single lumen portion, including an extension of the inner lumen, into a vascular lumen; advancing the catheter through the vascular lumen, including positioning a segment of the single lumen portion, having one or more distal side holes, on a first side of a lesion and positioning a segment of the dual lumen portion, having one or more proximal side holes, on an opposing second side of the lesion; fluidly coupling a pressure measuring device to the one or more distal side holes of the single lumen portion and the one or more proximal side holes of the dual lumen portion, thereby operatively coupling the pressure measuring device to the first side of the lesion and the second side of the lesion, respectively; obtaining simultaneous pressure measurements from the first side of the lesion and the second side of the lesion; and determining a pressure differential across the lesion, wherein inserting the dual lumen portion, including the inner lumen and the outer lumen, into the vascular lumen includes inserting exactly two lumens that extend along an entire portion length from a manifold to the single lumen portion.