US 9,810,528 B2
Optical shape sensing with a plurality of optical fibers
Marco Verstege, Eindhoven (NL); Sander Hans Denissen, Best (NL); and Bharat Ramachandran, Morganville, NJ (US)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 14/895,275
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Jun. 27, 2014, PCT No. PCT/EP2014/063659
§ 371(c)(1), (2) Date Dec. 2, 2015,
PCT Pub. No. WO2014/207182, PCT Pub. Date Dec. 31, 2014.
Claims priority of provisional application 61/840,956, filed on Jun. 28, 2013.
Claims priority of application No. 13177245 (EP), filed on Jul. 19, 2013.
Prior Publication US 2016/0102969 A1, Apr. 14, 2016
Int. Cl. G01B 11/24 (2006.01); G01B 11/16 (2006.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01)
CPC G01B 11/24 (2013.01) [A61B 34/20 (2016.02); A61B 90/361 (2016.02); G01B 11/18 (2013.01); A61B 2034/2061 (2016.02)] 12 Claims
OG exemplary drawing
 
1. An optical shape sensing system comprising
a first optical fiber (OSF1) comprising optical shape sensing elements,
a second optical fiber (OSF2) comprising optical shape sensing elements,
a processor (P) arranged to register a first coordinate system indicative of a position of the first optical fiber (OSF1) in space, and to register a position (R2) of the second optical fiber (OSF2) in relation to the first coordinate system, and
an optical console system (C, C1, C2) arranged for interrogating the optical shape sensing elements in both of the first and second optical fibers (OSF1, OSF2), and to accordingly determine a measure of a three-dimensional shape (I) of at least parts of both of the first and second optical fibers (OSF1, OSF2), based on the registered position (R2) of the second optical fiber (OSF2) in relation to the first coordinate system,
characterized in that
the first optical fiber (OSF1) and the second optical fiber (OSF2) are mechanically concatenated so that the second optical fiber (OSF2) serves to extend an effective length of the first optical fiber (OSF1) or to improve accuracy of a three-dimensional shape reconstruction of the first optical fiber (OSF1), and
the processor (P) is arranged to register a position in space (R2) and an orientation of a proximal part of the second optical fiber (OSF2) in relation to the first coordinate system.