Patent ID: 8317715

Claim:
A catheter for measuring translesional pressure used in calculating fractional flow reserve (FFR) in a cardiovascular system, the catheter comprising: a guiding tube adapted for insertion into the cardiovascular system, the guiding tube defining a lumen for sliding a guidewire therethrough, the guiding tube being fully distal to the lesion during measurement of pressure for calculating FFR; a tip pressure sensor located proximal to the guiding tube for sensing a pressure in the cardiovascular system; a signal communicating means extending from the tip pressure sensor and for transmitting a signal indicative of the pressure to a processing device in order to obtain a pressure measurement reading and to calculate the fractional flow reserve (FFR) of the lesion based on the pressure measurement reading; and a miniature hypo-tube for receiving at least a portion of the signal communication means, the miniature hypo-tube standing fully across the lesion during measurement of pressure for calculating FFR, wherein the miniature hypo-tube is made of a high yield strength material comprising one of full hard stainless steel, Nitinol, and Cobalt-chromium.