公开(公告)号：US20170370704A1

公开(公告)日：2017-12-28

申请号：US15520950

申请日：2015-12-07

Applicant: INTUITIVE SURGICAL OPERATIONS, INC.

Inventor： Mark FROGGATT ,  Dawn K. GIFFORD ,  Stephen T. KREGER ,  Alexander K. SANG ,  Jeffrey T. LACROIX ,  Eric E. SANBORN

IPC: G01B11/16 ,  G01M11/00 ,  G01B21/04 ,  G01D5/353 ,  G01D5/34 ,  G02B6/02 ,  G01K11/32

CPC classification number: G01B11/161 ,  G01B11/18 ,  G01B21/042 ,  G01D5/344 ,  G01D5/35316 ,  G01D5/35354 ,  G01K11/3206 ,  G01L1/242 ,  G01M11/3172 ,  G01M11/3181 ,  G02B6/02042 ,  G02B6/02057

Abstract: An optical fiber includes multiple optical waveguides configured in the fiber. An interferometric measurement system mitigates or compensates for the errors imposed by differences in a shape sensing optical fiber's response to temperature and strain. A 3-D shape and/or position are calculated from a set of distributed strain measurements acquired for a multi-core optical shape sensing fiber that compensates for these non-linear errors using one or more additional cores in the multicore fiber that react differently to temperature changes than the existing cores.