Patent ID: 11857345
Assignee: BOSTON SCIENTIFIC SCIMED, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 14:
15. A pressure sensing guidewire for measuring fractional flow reserve, the guidewire comprising:
an elongate shaft having a proximal region and a distal region and defining a lumen extending therethrough;
wherein the distal region has a plurality of slots formed therein;
an optical fiber extending within the shaft and including a distal end;
an optical pressure sensing block disposed within the lumen, the optical pressure sensing block including a distal portion, a proximal portion, and a center portion disposed between the distal portion and the proximal portion;
a pressure sensing membrane disposed on a distal end of the optical pressure sensing block;
the proximal portion forming an optical fiber connector extending proximally from the proximal portion and fusion spliced to the distal end of the optical fiber;
an outer surface of the distal portion tapering from the center portion to a position proximate the pressure sensing membrane; and
the proximal portion tapering from the center portion to the optical fiber connector.