SHAPE SENSING DEVICE-SPECIFIC

• US 20130325387A1
• Filed: 01/20/2012
• Published: 12/05/2013
• Est. Priority Date: 01/27/2011
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Manzke, Robert, Chan, Raymond, Hall, Christopher Stephen, Ramachandran, Bharat
• Application Number:
  US13/980,056
• Publication Number:
  US 20130325387A1
• Time in Patent Office: Days
• US Class Current: 702/97
• CPC Class Codes: A61B 1/00147 Holding or positioning arrangements
• CPC Class Codes: A61B 1/009 with bending or curvature detection of the insertion part
• 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 2562/085 combined with means for recording calibration data
• CPC Class Codes: A61B 5/065 Determining position of the probe employing exclusively positioning means located on or in the probe, e.g. using position sensors arranged on the probe
• CPC Class Codes: G01B 11/18 using photoelastic elements
• CPC Class Codes: G01B 21/042 Calibration or calibration artifacts G01B3/30, G01B9/02072 take precedence
• CPC Class Codes: G01B 9/00 Measuring instruments characterised by the use of optical techniques
• CPC Class Codes: G01D 18/008 with calibration coefficients stored in memory
• CPC Class Codes: G01D 5/35316 using a Bragg gratings

Abstract

A medical instrument, system and method for calibration are provided. The instrument includes a body (202) and a shape sensing system (204) coupled to the body to permit determination of a shape of the body. A memory element (205, 206) is coupled to the body and configured to store data associated with calibration of the body, the data being readable through a cable (210) connectable to the body so that the data permits calibration of the body.

Claims

1. A medical instrument, comprising:

a body (202);

a shape sensing system (204) coupled to the body to permit determination of a shape of the body;

a memory element (206) coupled to the body and configured to store data associated with calibration of the body, the data being readable from the memory element through a cable (210) connectable to the body so that the data permits calibration of the body.

2. The instrument as recited in claim 1, wherein the memory element includes at least one of a memory chip (206) installed within the body and a portable memory device (205) insertable within the body.

4. The instrument as recited in claim 1, wherein the data associated with calibration of the body includes one of device-specific calibration data and reference data providing a cross-reference to an external memory source (116, 150) having the device specific calibration data.

5. The instrument as recited in claim 1, wherein the data associated with calibration of the body is parameter-dependent such that given a value of a parameter, parameter-dependent data is retrieved from one of the memory element (205, 206) and a cross-reference to an external memory source (116, 150), wherein the parameter includes a temperature and temperature-dependent data is retrieved from one of the memory element and a cross-reference to an external memory source.

8. The instrument as recited in claim 4, wherein the body includes one or more segments (223, 225), and at least one temperature sensor (222) configured to provide the temperature-dependent data, the at least one temperature sensor (222) includes at least one temperature sensor mounted on or in each segment and configured to measure the temperature at each segment to provide the temperature-dependent data for each segment.

9. The instrument as recited in claim 1, further comprising one or more preset devices (220) mounted on or in the instrument, the one or more preset devices configured to provide, when activated, data specifically associated with calibration for that preset device and retrieved from one of the memory element and a cross-reference to an external memory source.

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13. A system for calibrating a medical instrument, comprising:

a processor (114);

memory storage (116) coupled to the processor;

an optical sensing module (115) configured to receive optical feedback from a shape sensing system (104) coupled to a body of a medical instrument (102) to permit determination of a shape of the body;

the medical instrument further comprising;

a memory element (140) coupled to the body and configured to store data associated with calibration of the body, the data being readable from the memory element through a cable coupled from the body to provide the optical feedback to the optical sensing module so that the data permits calibration of the body.

14. The system as recited in claim 13, wherein the memory element (140) includes one of a memory chip (206) installed within the body and a portable memory device (205) insertable within the body or the optical sensing module.

15. The system as recited in claim 13, wherein the data associated with calibration of the body includes one of device-specific calibration data and reference data providing a cross-reference to the memory storage or an external memory source having the device specific calibration data.

16. The system as recited in claim 13, wherein the data associated with calibration of the body is parameter-dependent such that given a value of a parameter, parameter-dependent data is retrieved from one of the memory element and a cross-reference to the memory storage or an external memory source, wherein the parameter includes a temperature and temperature-dependent data is retrieved from one of the memory element and a cross-reference to the memory storage or an external memory source.

19. The system as recited in claim 16, wherein the body includes one or more segments (223, 225), and at least one temperature sensor (222) configured to provide the temperature-dependent data, the at least one temperature sensor includes at least one temperature sensor mounted on or in each segment and configured to measure the temperature at each segment to provide the temperature-dependent data for each segment.

20. The system as recited in claim 13, further comprising one or more preset devices (220) mounted on or in the instrument, the one or more preset devices configured to provide, when activated, data specifically associated that preset device for calibration and retrieved from one of the memory element and a cross-reference to the memory storage or an external memory source.

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24. A method, comprising:

providing (302) an optical shape sensing medical instrument having a body, a shape sensing system coupled to the body to permit determination of a shape of the body, and a memory element coupled to the body and configured to store device-specific data associated with calibration of the body, the data being readable from the memory element through a cable connectable to the body so that the data permits calibration of the body;

retrieving (306) the data associated with calibration of the body from the memory element, the data including one of calibration data or reference data pointing to the calibration data; and

calibrating (312) the body of the instrument by employing the data associated with calibration of the body.

26. The method as recited in claim 24, wherein retrieving (306) includes indexing (307) the data associated with calibration of the body using a parameter-dependent index such that given a value of a parameter, parameter-dependent data is retrieved from one of the memory element and a cross-reference to an external memory source.

28. The method as recited in claim 24, wherein the body includes one or more segments, and the at least one temperature sensor includes at least one temperature sensor mounted on or in each segment and further comprising measuring (309) the temperature at each segment to provide the temperature-dependent data for each segment.

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