System and Method for Image-Based Alignment of an Endoscope
First Claim
1. A method for confirming correct alignment of a distal end of an endoscope including an imaging arrangement during an endoscopic procedure, the method comprising:
- (a) positioning the distal end of the endoscope adjacent to a target location and capturing a reference image using the imaging arrangement;
(b) sensing a real-time video image using the imaging arrangement; and
(c) comparing features of the real-time video image with the reference image to confirm correct alignment of the endoscope.
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Accused Products
Abstract
Systems and methods for endoscopic procedures employ a first technique to ensure initial correct alignment of an endoscope (100) with a desired target (10). A reference image (51) is then acquired from an imaging arrangement associated with the endoscope. During a subsequent stage of the procedure, tracking of the endoscope position relative to the target is performed partially or entirely by image-based tracking by comparing features in real-time video image (52) produced by imaging arrangement with features in the reference image (51). The feature comparison may be performed visually by a user, or may be automated to offer more specific corrective suggestions to the user.
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Citations
20 Claims
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1. A method for confirming correct alignment of a distal end of an endoscope including an imaging arrangement during an endoscopic procedure, the method comprising:
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(a) positioning the distal end of the endoscope adjacent to a target location and capturing a reference image using the imaging arrangement; (b) sensing a real-time video image using the imaging arrangement; and (c) comparing features of the real-time video image with the reference image to confirm correct alignment of the endoscope. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for ensuring correct alignment of an endoscope during performance of an endoscopic procedure, the system comprising:
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(a) an endoscope having a distal end for insertion into a body; (b) an imaging arrangement associated with said endoscope and configured to generate a real-time video image of a region beyond said distal end; and (c) a processing system associated with said imaging arrangement and configured to; (i) in an initial state of alignment with a target location, derive from said imaging arrangement a reference image corresponding to correct alignment with the target location, (ii) derive from said imaging arrangement real-time images of the region beyond said distal end, and (iii) co-process said reference image and said real-time images to determine a current alignment status of said endoscope with the target location. - View Dependent Claims (14, 15, 16, 17)
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18. A method for facilitating performance of an endoscopic procedure on a target which is obscured from view by an imaging arrangement of an endoscope, the method comprising:
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(a) generating real-time video from the imaging arrangement of the endoscope; (b) determining a position of the target and a position of a distal end of the endoscope; (c) generating a display including the real-time video and a simulated view of the target correctly positioned within the real-time video; and (d) adjusting the display so as to maintain the target correctly positioned within the real-time video when the endoscope is moved. - View Dependent Claims (19, 20)
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Specification