Pressure-sensing intravascular devices, systems, and methods

A sensor structure for use in an intravascular device assembly, the sensor structure comprising:

• a substrate comprising an elongated shape with a length defined along a longitudinal axis (LA) and a width extending perpendicular to the longitudinal axis, the shape further comprising:
• a proximal surface and an opposing distal surface, each extending substantially perpendicular to the LA;
• and
• an outer surface extending substantially parallel to the LA;
• a plurality of electrodes disposed within the substrate and extending longitudinally through the substrate, the plurality of electrodes being uniformly distributed around the LA, wherein at least one electrode is coupled to an electrical conductor of the intravascular device assembly;
• and
• a sensor circuit disposed on the distal surface, the sensor circuit comprising at least one lead coupled to at least one electrode, wherein the sensor circuit comprises an intravascular pressure sensor circuit.

A system for performing measurements using a sensor exposed to an intravascular environment, the system comprising:

• an intravascular device comprising:
• a flexible elongate member;
• a core member disposed inside the flexible elongate member;
• an electrical conductor extending along the core member;
• and
• an elongated substrate disposed distal to the core member and inside the flexible elongate member, the elongated substrate comprising:
• a plurality of electrodes disposed within the elongated substrate and extending through the elongated substrate in a longitudinal direction, the plurality of electrodes uniformly distributed around a longitudinal axis (LA) of the elongated substrate, wherein the electrical conductor is coupled to at least one electrode;
• and
• a sensor circuit disposed on a distal surface of the elongated substrate, the sensor circuit coupled to at least one electrode, wherein the sensor circuit comprises an intravascular pressure sensor circuit;
• and
• a control console coupled to the intravascular device.