US 2025/0152254 A1Published application

Device tracking using longitudinal encoding

AssigneeKoninklijke Philips N.V.

InventorsSander Hans DENISSEN, Marco VERSTEGE, Dirk DIJKKAMP, Marcellinus Petrus Maria CNOOPS

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Abstract

A method for reconstructing 3D shape of a longitudinal device using an optical fiber with optical shape sensing (OSS) properties, e.g. Bragg gratings. By attaching the optical fiber to the longitudinal device, such that the optical fiber follows its 3D shape upon bending, known OSS techniques can be applied to reconstruct 3D shape of the optical fiber, and thus also the longitudinal device, e.g. a medical catheter. E.g. the optical fiber, e.g. placed in a guide wire, can be inserted in a lumen of the longitudinal device. Hereby, one OSS system can be used for 3D tracking a plurality of non-shape sensed catheters or other longitudinal devices. In case the longitudinal device is longer than the optical fiber, the position and shape of the remaining part of the longitudinal device may be estimated and visualized to a user, e.g. based on a known length of the longitudinal device, and based on an orientation of an end point of the optical fiber, e.g. using knowledge about the stiffness or other properties of the longitudinal device.

Claims21

Dependent claims

An optical shape sensing system comprising:

a guide wire (GW) comprising an optical fiber (OF) with optical shape sensing properties along at least a part of its longitudinal extension;
an associated longitudinal device (C) arranged to allow a user to attach the guide wire thereto, so as to ensure that the optical fiber (OF) will follow a three-dimensional shape of at least a part of the associated longitudinal device (C);
a longitudinal offset encoding system (HB) arranged with a lumen having a recognizable curvature such that an algorithm in the optical shape sensing system can automatically derive from the interrogation of the optical fiber where this hub is in space, to establish a corresponding recognizable longitudinal offset between the associated longitudinal device (C) and the optical fiber (OF);
and
an optical console, a processor, and a memory storing instructions, which when executed by the processor, cause the processor to:
automatically recognize, when the optical device is optically interrogated, a recognizable longitudinal offset between the longitudinal device and the optical fiber, and register a longitudinal offset of the longitudinal device in relation to a point along the optical fiber as a unique identification of a respective three-dimensional positioning;
optically interrogate the optical fiber;
reconstruct, when the optical device is optically interrogate, a three-dimensional shape of at least a part of the optical fiber (OF) in response to a result of the optical interrogation of the optical fiber;
and
generate an output indicative of a three-dimensional shape of at least a part of the longitudinal device in response to the reconstructed three-dimensional shape of at least part of the optical fiber, and in response to the registered longitudinal offset of the longitudinal device in relation to a point along the optical fiber.

7 more elements

A non-transitory, computer readable medium that stores computer executable program code, which when executed by a processor, causes the processor to:

automatically recognize, when an optical fiber having optical shape sensing properties is optically interrogated, wherein the optical fiber forms part of a guide wire, a recognizable longitudinal offset between an associated longitudinal device and the optical fiber from the signal received from the interrogated optical fiber;
register data (M_HB_R) indicating the longitudinal offset between the associated longitudinal device and the optical fiber;
receive data (O_I) from an optical interrogation of the optical shape sensing properties of the optical fiber;
reconstruct (R_3D_OF) a three-dimensional shape of at least a part of the optical fiber in response to the data from the optical interrogation;
and
generate an output (G_3D_C) indicative of a three-dimensional shape of at least a part of the associated longitudinal device in response to the three-dimensional shape of at least a part of the optical fiber, and in response to the longitudinal offset of the associated longitudinal device in relation to the optical fiber.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/019,695Filed 14 Jan 2025
Priority: EP 13187014.92 Oct 2013
Published: 15 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61B 34/20
Computer-aided surgery; Manipulators or robots specially adapted for use in surgery: surgical navigation systems; Devices for tracking or guiding…
A61B 1/009
Flexible endoscopes: with bending or curvature detection of the insertion part
A61B 5/065
Devices, other than using radiation, for detecting or locating foreign bodies ; Determining position of diagnostic devices within or on the body…:…
G01B 11/18
For measuring the deformation in a solid, e.g. optical strain gauge: using photoelastic elements

Family

Application15/025,607Continuation · filed 29 Mar 2016
Application19/019,695Continuation
US 2016/0228200 A1Published application
US 2025/0152254 A1This patent

From the US filing history. Foreign family members aren’t listed.

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