Optical fiber instrument system and method with motion-based adjustment

• US 9,500,473 B2
• Filed: 09/04/2012
• Issued: 11/22/2016
• Est. Priority Date: 08/14/2007
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Ramamurthy, Bhaskar S., Tanner, Neal A., Younge, Robert G., Schlesinger, Randall L.
• Primary Examiner(s): Stanfield, Cherie M
• Application Number:
  US13/603,015
• Publication Number:
  US 20130085397A1
• Time in Patent Office: 1,540 Days
• Field of Search: 600/476, 606/41
• US Class Current: 1/1
• CPC Class Codes: A61B 1/00004 characterised by electronic signal processing
• CPC Class Codes: A61B 1/00013 using optical means
• CPC Class Codes: A61B 1/00045 Display arrangement
• CPC Class Codes: A61B 1/00057 provided with means for testing or calibration
• CPC Class Codes: A61B 1/00165 with light-conductive means, e.g. fibre optics A61B1/07 takes precedence
• CPC Class Codes: A61B 1/0017 Details of single optical fibres, e.g. material or cladding
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 18/22 the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
• CPC Class Codes: A61B 2017/00699 correcting for movement caused by respiration, e.g. by triggering
• CPC Class Codes: A61B 2017/00725 Calibration or performance testing
• CPC Class Codes: A61B 2034/2061 using shape-sensors, e.g. fiber shape sensors with Bragg gratings
• CPC Class Codes: A61B 2034/301 for introducing or steering flexible instruments inserted into the body, e.g. catheters or endoscopes
• CPC Class Codes: A61B 2034/715 Cable tensioning mechanisms for removing slack
• CPC Class Codes: A61B 2034/741 Glove like input devices, e.g. "data gloves"
• CPC Class Codes: A61B 2090/374 NMR or MRI
• CPC Class Codes: A61B 2090/376 using X-rays, e.g. fluoroscopy
• CPC Class Codes: A61B 2090/378 using ultrasound
• 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 34/30 Surgical robots
• CPC Class Codes: A61B 34/37 : Master-slave robots A61B34/35 takes precedence
• CPC Class Codes: A61B 34/71 : Manipulators operated by drive cable mechanisms
• CPC Class Codes: A61B 34/77 : Manipulators with motion or force scaling
• CPC Class Codes: A61B 5/0059 : using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/0064 : Body surface scanning
• CPC Class Codes: A61B 5/06 : Devices, other than using radiation, for detecting or locating foreign bodies for removing same A61B17/50 ; determining position of probes within or on the body of the patient
• 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: A61B 5/066 : Superposing sensor position on an image of the patient, e.g. obtained by ultrasound or x-ray imaging
• CPC Class Codes: A61B 5/4887 : Locating particular structures in or on the body
• CPC Class Codes: A61B 5/7285 : for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal A61B6/5205, A61B6/541, A61B8/5207, A61B8/543 take precedence
• CPC Class Codes: A61B 6/12 : Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 8/00 : Diagnosis using ultrasonic, sonic or infrasonic waves imaging of objects using sonar G01S15/00
• CPC Class Codes: A61B 8/48 : Diagnostic techniques A61B8/13 takes precedence
• CPC Class Codes: A61B 90/39 : Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61B 90/96 : using barcodes
• CPC Class Codes: A61B 90/98 : using electromagnetic means, e.g. transponders
• CPC Class Codes: A61M 2025/0166 : Sensors, electrodes or the like for guiding the catheter to a target zone, e.g. image guided or magnetically guided
• CPC Class Codes: G01B 11/16 : for measuring the deformation in a solid, e.g. optical strain gauge
• CPC Class Codes: G01B 11/165 : by means of a grating deformed by the object
• CPC Class Codes: G01L 1/242 : the material being an optical fibre

Abstract

An instrument system that includes an optical fiber and a controller is provided. The optical fiber is coupled to an external structure of a patient and has a strain sensor provided thereon. The controller is operatively coupled to the optical fiber and adapted to receive a signal from the strain sensor and to determine a property of respiration of the patient based on the signal.

Claims

1. A method for monitoring respiration, comprising:

receiving a signal from a strain sensor provided on an optical fiber, wherein the optical fiber is coupled to an exterior of the patient;

determining, using a controller, a property of respiration of the patient based on the signal of the optical fiber; and

controlling, using the controller, ablation timing of an elongate body that is configured to be placed inside the patient based on the determined property of respiration of the patient.

2. The method of claim 1, wherein the exterior of the patient comprises the patient'"'"'s chest, and wherein determining the property of respiration comprises determining movement of the patient'"'"'s chest.

3. The method of claim 2, wherein the controller is configured to control the elongate body based on the determined movement of the patient'"'"'s chest.

4. The method of claim 3, wherein the elongate body is adapted to deliver therapy inside the patient, and wherein the method further comprising controlling, using the controller, timing of the delivery of therapy based on the determined movement of the patient'"'"'s chest.

5. The method of claim 4, wherein the elongate body comprises an ablation catheter, and wherein the controlling the timing of the delivery of therapy comprises causing the ablation catheter to deliver ablation energy at a plurality of times that each correspond to a same point of a respiratory cycle and/or of a cardiac cycle so as to improve the accuracy and effectiveness of ablations.

6. The method of claim 3, wherein the controller is adapted to control an actuation element that is adapted to actuate the elongate body, and wherein the control of the actuation element is based on the determined movement of the patient'"'"'s chest.

7. The method of claim 3, further comprising adjusting, using the controller, a parametric representation model of an internal structure of the patient based on the determined movement of the patient'"'"'s chest.

8. The method of claim 7, wherein the internal structure of the patient is the patient'"'"'s heart and wherein the parametric representation model is configured to be used to navigate the elongate body inside the patient'"'"'s heart.

9. The method of claim 7, wherein the parametric representation model is configured to be used in an electrophysiology procedure.

10. A method for monitoring respiration, comprising:

receiving a signal from a strain sensor provided on an optical fiber, wherein the optical fiber is coupled to an exterior of the patient;

determining, using a controller, a property of respiration of the patient based on the signal of the optical fiber; and

controlling, using the controller, an elongate body, which is configured to be placed inside the patient, to deliver therapy inside the patient based on the determined property of respiration of the patient,

wherein the controller is configured to control timing of the delivery of therapy inside the patient based on the determined property of respiration of the patient such that the timing of the delivery of therapy is controlled based on the determined property of respiration of the patient.