Patent ID: 11969221
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 2:
3. A method for sensing a shape in a shape sensing enabled instrument, comprising:
providing a guide wire comprising:
an outer surface which encapsulates interior features, the interior features including an optical fiber lumen configured to receive one or more optical fibers for optical shape sensing; and a guide wire support rod configured to receive the optical fiber lumen therein to permit rotation and translation of the one or more optical fibers and to protect the one or more optical fibers,
wherein: the optical fiber lumen substantially decouples torqueing of the instrument from twisting the one or more optical fibers, which are rotationally isolated from external torqueing; and
the one or more optical fibers are disposed along a central longitudinal axis of the guide wire,
an optical shape sensing fiber disposed within a pull wire;
the guide wire support rod comprising an internal coating disposed on an inner diameter thereof, the internal coating being adapted to reduce friction of one or more optical fibers disposed in the guide wire support rod;

receiving optical signals from the one or more optical fibers; and
interpreting the optical signals to determine a shape of the instrument.