Method and apparatus for collecting and processing physical space data for use while performing image-guided surgery
First Claim
1. A method of collecting and processing physical space data for use while performing image-guided surgery, the method comprising:
- (a) surgically exposing tissue within a living patient;
(b) collecting physical space data by (i) illuminating the surface of the exposed tissue within the living patient with laser light, (ii) receiving light reflected from the illuminated surface of the exposed tissue within the living patient, and (iii) performing an analysis on the reflected light, the physical space data providing three-dimensional (3-D) coordinates for each of a plurality of scanned surface points;
(c) based on the physical space data collected in step (b), determining registrations used to indicate surgical position in both image space and physical space;
(d) using the registrations determined in step (c) to map into image space,(i) image data describing the physical space of an ablative instrument used to perform the image-guided surgery,(ii) an ablation zone of the instrument,(iii) the tissue, and(iv) a particular portion of the tissue to be resected or ablated;
(e) taking a video image after collecting the physical space data; and
(f) texture mapping the video image onto each registration by a dynamic calibration function.
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Accused Products
Abstract
A method and apparatus for collecting and processing physical space data used while performing image-guided surgery is disclosed. Physical space data is collected by probing physical surface points of surgically exposed tissue. The physical space data provides three-dimensional (3-D) coordinates for each of the physical surface points. Based on the physical space data collected, point-based registrations used to indicate surgical position in both image space and physical space are determined. In one embodiment, the surface of surgically exposed tissue of a living patient is illuminated with laser light. Light reflected from the illuminated surface of the exposed tissue is received and analyzed. In another embodiment, one or more magnetic fields of known shape and size are established in the proximity of the exposed tissue. Data associated with the strength of the magnetic fields is acquired and analyzed.
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Citations
13 Claims
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1. A method of collecting and processing physical space data for use while performing image-guided surgery, the method comprising:
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(a) surgically exposing tissue within a living patient; (b) collecting physical space data by (i) illuminating the surface of the exposed tissue within the living patient with laser light, (ii) receiving light reflected from the illuminated surface of the exposed tissue within the living patient, and (iii) performing an analysis on the reflected light, the physical space data providing three-dimensional (3-D) coordinates for each of a plurality of scanned surface points; (c) based on the physical space data collected in step (b), determining registrations used to indicate surgical position in both image space and physical space; (d) using the registrations determined in step (c) to map into image space, (i) image data describing the physical space of an ablative instrument used to perform the image-guided surgery, (ii) an ablation zone of the instrument, (iii) the tissue, and (iv) a particular portion of the tissue to be resected or ablated; (e) taking a video image after collecting the physical space data; and (f) texture mapping the video image onto each registration by a dynamic calibration function. - View Dependent Claims (2, 3, 4, 5, 6)
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7. Apparatus for collecting and processing physical space data for use while performing image-guided surgery, the apparatus comprising:
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(a) a laser scanner for collecting physical space data by (i) illuminating the surface of surgically exposed tissue within a living patient with laser light, (ii) receiving light reflected from the illuminated surface of the exposed tissue within the living patient, and (iii) performing an analysis on the reflected light, the physical space data providing three-dimensional (3-D) coordinates for each of a plurality of scanned surface points; (b) an ablative instrument for resecting or ablating a particular portion of the exposed tissue; (c) an image data processor comprising a computer-readable medium holding computer-executable instructions for; (i) based on the physical space data collected by the laser scanner, determining registrations used to indicate surgical position in both image space and physical space; and (ii) using the registrations to map into image space, a) data describing the physical space of the ablative instrument, b) an ablation zone of the instrument, c) the tissue, and d) a particular portion of the tissue to be resected or ablated; (d) taking a video image after collecting the physical space data; and (e) texture mapping the video image onto each registration by a dynamic calibration function. - View Dependent Claims (8, 9)
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10. An article of manufacture for collecting and processing physical space data for use while performing image-guided surgery, the article of manufacture comprising a computer-readable medium holding computer-executable instructions for performing a method comprising:
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(a) determining registrations used to indicate surgical position in both image space and physical space by processing physical space data collected by (i) illuminating the surface of surgically exposed tissue within a living patient with laser light, (ii) receiving light reflected from the illuminated surface of the exposed tissue within the living patient, and (iii) performing an analysis on the reflected light, the physical space data providing three-dimensional (3-D) coordinates for each of the physical surface points; and (b) using the registrations to map into image space, (i) image data describing the physical space of an ablative instrument used to perform the image-guided surgery, (ii) an ablation zone of the ablative instrument, (iii) the tissue, and (iv) a particular portion of the tissue to be resected or ablated; (c) taking a video image after collecting the physical space data; and (d) texture mapping the video image onto each registration by a dynamic calibration function. - View Dependent Claims (11, 12)
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13. A method of collecting and processing physical space data for use while performing image-guided surgery, the method comprising:
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(a) surgically exposing tissue within a living patient; (b) collecting physical space data by (i) establishing one or more magnetic fields of known shape and size in the proximity of the exposed tissue within the living patient, (ii) acquiring data associated with the strength of the magnetic fields, and (iii) performing an analysis on the acquired data, the physical space data providing three-dimensional (3-D) coordinates for each of a plurality of scanned surface points; (c) based on the physical space data collected in step (b), determining registrations used to indicate surgical position in both image space and physical space; (d) using the registrations determined in step (c) to map into image space, (i) image data describing the physical space of an ablative instrument used to perform the image-guided surgery, (ii) an ablation zone of the instrument, (iii) the tissue, and (iv) a particular portion of the tissue to be resected or ablated; and (e) taking a video image after collecting the physical space data; and (f) texture mapping the video image onto each registration by a dynamic calibration function.
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Specification