MULTIPURPOSE LUMEN DESIGN FOR OPTICAL SHAPE SENSING

• US 20160228199A1
• Filed: 09/16/2014
• Published: 08/11/2016
• Est. Priority Date: 09/30/2013
• Status: Active Grant

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips N.V.
• Inventors: FLEXMAN, MOLLY LARA, NOONAN, DAVID PAUL
• Granted Patent: US 9,974,617 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00323 Cables or rods
• CPC Class Codes: A61B 2017/00845 of moving parts with respect to each other
• CPC Class Codes: A61B 2034/2061 using shape-sensors, e.g. fiber shape sensors with Bragg gratings
• CPC Class Codes: A61B 2562/0266 Optical strain gauges
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 34/71 Manipulators operated by drive cable mechanisms
• CPC Class Codes: A61B 5/1076 for measuring dimensions inside body cavities, e.g. using catheters A61B3/1005 takes precedence
• CPC Class Codes: A61B 5/6852 Catheters
• CPC Class Codes: A61M 2025/091 having a lumen for drug delivery or suction
• CPC Class Codes: A61M 2025/0915 having features for changing the stiffness
• CPC Class Codes: A61M 25/0026 Multi-lumen catheters with stationary elements catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175
• CPC Class Codes: A61M 25/0102 Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod
• CPC Class Codes: G02B 23/2469 using optical fibres
• CPC Class Codes: G02B 23/2476 Non-optical details, e.g. housings, mountings, supports

Abstract

A shape sensing enabled instrument includes a flexible longitudinal body (103) including an outer surface which encapsulates interior features. The interior features include an optical fiber lumen (105) configured to receive one or more optical fibers for optical shape sensing, and a mechanical member (107) forming a hollow extending longitudinally down the body. The mechanical member is configured to receive the optical fiber lumen therein to permit rotation and translation of an optical fiber and to protect the optical fiber.

Claims

1. A shape sensing enabled instrument having one or more optical fibers, comprising:

a flexible longitudinal body including an outer surface which encapsulates interior features;

the interior features including;

an optical fiber lumen configured to receive the one or more optical fibers for optical shape sensing; and

a mechanical member comprising an existing structure which provides another function for the shape sensing enabled instrument, said mechanical member forming a hollow extending longitudinally down the body, the mechanical member configured to include the optical fiber lumen therein, to permit rotation and translation of an optical fiber within the lumen during operation of the instrument and to protect the optical fiber including resisting pinching and/or kinking thereof.

2. The instrument as recited in claim 1, wherein the flexible longitudinal body includes a guide wire and the mechanical member includes a support member of the guide wire.

4. The instrument as recited in claim 1, wherein the flexible longitudinal body includes a catheter and the mechanical member includes a support member of the catheter.

5. The instrument as recited in claim 4, wherein the catheter includes a working channel and the mechanical member includes an off-center support member of the catheter.

6. The instrument as recited in claim 1, wherein the flexible longitudinal body includes a catheter and the mechanical member includes a pull wire of the catheter.

7. The instrument as recited in claim 1, wherein the mechanical member includes an internal coating to reduce friction of an optical fiber in the lumen and to reduce vibrations in the optical fiber.

8. The instrument as recited in claim 1, wherein the mechanical member includes at least one of strands, braids and dampening materials configured to provide vibration-dampening features.

3. The instrument as recited in claim wherein the guide wire, the mechanical member and the optical fiber lumen share a common longitudinal axis.

9. A shape sensing system, comprising:

a shape sensing enabled medical instrument having one or more optical fibers and including a flexible longitudinal body including 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 mechanical member comprising an existing structure which provides another function for the shape sensing enabled instrument, said mechanical member forming a hollow extending longitudinally down the body, the mechanical member configured to include the optical fiber lumen therein to permit rotation and translation of an optical fiber within the lumen during operation of the instrument and to protect the optical fiber including resisting pinching and/or kinking thereof; and

a console configured to receive optical signals from the one or more optical fibers and interpret the optical signals to determine a shape of the instrument.

10. The system as recited in claim 9, wherein the flexible longitudinal body includes a guide wire and the mechanical member includes a support member of the guide wire.

11. The system as recited in claim 10, wherein the guide wire, the mechanical member and the optical fiber lumen share a common longitudinal axis.

12. The system as recited in claim 9, wherein the flexible longitudinal body includes a catheter and the mechanical member includes a pull wire of the catheter.

13. The system as recited in claim 12, wherein the catheter includes a working channel and the mechanical member includes an off-center support member of the catheter.

14. The system as recited in claim 9, wherein the mechanical member includes an internal coating to reduce friction of an optical fiber in the lumen and to reduce vibrations in the optical fiber.

15. (canceled)

16. A method for sensing a shape in a shape sensing enabled instrument having one or more optical fibers, comprising:

providing flexible longitudinal body including an outer surface which encapsulates interior features, the interior features including an optical fiber lumen configured to receive the one or more optical fibers for optical shape sensing and a mechanical member comprising an existing structure which provides another function for the shape sensing enabled instrument, said mechanical member forming a hollow extending longitudinally down the body, the mechanical member configured to include the optical fiber lumen therein to permit rotation and translation of an optical fiber within the lumen during operation of the instrument and to protect the optical fiber including resisting pinching and/or kinking thereof;

receiving optical signals from the one or more optical fibers; and

interpreting the optical signals to determine a shape of the instrument.

17. (canceled)

18. (canceled)

19. (canceled)

20. (canceled)