An intravascular imaging device is provided. In one embodiment, the intravascular device includes a flexible elongate member sized and shaped for insertion into a vessel of a patient, the flexible elongate member having a distal portion and a proximal portion； and a physiologic sensor assembly disposed at the distal portion, wherein the distal portion of the flexible elongate member comprises a distal inner member coupled to the physiologic sensor assembly, the distal inner member including a first groove extending longitudinally along the distal inner member, and wherein one of a stiffening wire extending longitudinally within the flexible elongate member or an electrical cable coupled to the physiologic sensor assembly is positioned within the first groove of the distal inner member.
