COAXIAL DUAL LUMEN PIGTAIL CATHETER
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Accused Products
Abstract
A coaxial dual lumen pigtail catheter utilizes coaxial construction incorporating a thin wall guiding catheter technology for the outer lumen and using a strong braided diagnostic technology for the central lumen to accommodate high-pressure injections. The catheter includes a manifold body to provide for connection to each of the dual lumens. The distal end of the coaxial dual lumen pigtail catheter tapers to a more flexible portion that is perforated by spiral side holes to provide for more undistorted pressure readings in the left ventricle. The coaxial dual lumen pigtail catheter also utilizes proximal straight sideholes at the end of the dual lumen portion and a taper between the dual lumen portion and the single lumen portion.
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Citations
44 Claims
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1-22. -22. (canceled)
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23. A method, comprising:
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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. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification