Guidance system for localization and cannulation of the coronary sinus
First Claim
Patent Images
1. A method for moving an instrument to a selected location, comprising:
- determining an orientation of an imageable member based on an analysis of a region of interest in an image including the imageable member associated with the instrument;
recalling a probable location of an ostium based upon a predetermined triangulated location of the ostium from selected landmarks in the image;
displaying on a display device a target icon at the recalled probable location of the ostium;
displaying on the display device the imageable member relative to the displayed target icon with the determined orientation of the imageable member;
moving the instrument relative to the ostium based on the determined orientation of the imageable member and the displayed target icon;
receiving image data of the imageable member, wherein the image data may be used to generate the image for display; and
executing instructions with a processor to perform the analysis of the region of interest in the image;
wherein executing instructions with a processor to perform the analysis of the region of interest in the image includes;
determining a center longitudinal line along a distal portion of the imageable member;
determining a first line extending substantially parallel to and on a first side of the center longitudinal line;
determining a second line extending substantially parallel to and on a second side of the center longitudinal line;
determining a first period length of high contrast portions intersecting the first line along its length; and
determining a second period length of high contrast portions intersecting the second line along its length;
wherein the orientation of the imageable member is determined by evaluating at least one of the first period length or the second period length relative to a recalled manufacturer period length, an assumed period length, a maximum period length, or a calculation of an arc cosine within the region of interest.
1 Assignment
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Accused Products
Abstract
A high contrast instrument, such as a radiopaque portion, can be captured and/or viewed in an image that is acquired with an imaging system, such as with a fluoroscopic imaging system. A statistical model can be used to assist in identifying a possible or probable location of a target. A user may move the instrument coil to the statistically probable location of the target to, for example, perform a procedure or carry out a task.
44 Citations
19 Claims
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1. A method for moving an instrument to a selected location, comprising:
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determining an orientation of an imageable member based on an analysis of a region of interest in an image including the imageable member associated with the instrument; recalling a probable location of an ostium based upon a predetermined triangulated location of the ostium from selected landmarks in the image; displaying on a display device a target icon at the recalled probable location of the ostium; displaying on the display device the imageable member relative to the displayed target icon with the determined orientation of the imageable member; moving the instrument relative to the ostium based on the determined orientation of the imageable member and the displayed target icon; receiving image data of the imageable member, wherein the image data may be used to generate the image for display; and executing instructions with a processor to perform the analysis of the region of interest in the image; wherein executing instructions with a processor to perform the analysis of the region of interest in the image includes; determining a center longitudinal line along a distal portion of the imageable member; determining a first line extending substantially parallel to and on a first side of the center longitudinal line; determining a second line extending substantially parallel to and on a second side of the center longitudinal line; determining a first period length of high contrast portions intersecting the first line along its length; and determining a second period length of high contrast portions intersecting the second line along its length; wherein the orientation of the imageable member is determined by evaluating at least one of the first period length or the second period length relative to a recalled manufacturer period length, an assumed period length, a maximum period length, or a calculation of an arc cosine within the region of interest.
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2. A method for moving an instrument to a selected location, comprising:
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analyzing a region of interest in an image to determine an orientation of an imageable member, wherein the image is a single image including the imageable member associated with the instrument, wherein the imageable member is a helical member wrapped around a longitudinal axis of the elongated member; recalling a probable location of a target in the single image based upon a predetermined triangulated location of the target from selected landmarks in the single image; displaying on a display device a target icon at the recalled probable location of the target on the single image; displaying on the display device the helical member relative to the displayed target icon with the determined orientation of the imageable member; and determining the region of interest in the single image based upon movement of the helical member between a prior image and the single image; wherein analyzing the region of interest in the single image to determine the orientation of the imageable member includes; determining a center longitudinal line along a distal portion of the helical member; determining a first line extending substantially parallel to and on a first side of the center longitudinal line; determining a second line extending substantially parallel to and on a second side of the center longitudinal line; determining a first period of high contrast portions intersecting the first line along its length; determining a second period of high contrast portions intersecting the second line along its length; and evaluating the first period and the second period to determine the orientation of the imageable member; wherein the instrument is configured to be moved within a volume relative to the target with the helical member wrapped around the instrument. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for moving an instrument to a selected location, comprising:
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determining an orientation of an imageable member based on an analysis of a region of interest in an image including the imageable member associated with the instrument, wherein the image is a single image; recalling a probable location of an ostium based upon a predetermined triangulated location of the ostium from selected landmarks in the image; displaying on a display device a target icon at the recalled probable location of the ostium; displaying on the display device the imageable member relative to the displayed target icon with the determined orientation of the imageable member at least as one of a “
n”
shape or a “
u”
shape for viewing by a user; andwherein the instrument is configured to be moved relative to the ostium; wherein the imageable member is a helix coil; wherein determining the orientation of the helix coil is based on the analysis of the region of interest in the image including the helix coil including; determining a period length of helix coil to determine an angle of the helix coil, wherein the angle of the helix coil is between a first portion and a second portion of the helix coil; analyzing a shape of the helix coil in the image to determine a direction of the helix coil relative to a plane of the image; and combining the determined angle and the determined direction to determine the orientation of the helix coil as a combination of the determined angle and the determined direction.
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17. A method for moving an instrument to a selected location, comprising:
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determining an orientation of an imageable member based on an analysis of a region of interest in an image including the imageable member associated with the instrument, wherein the image is a single image; recalling a probable location of an ostium based upon a predetermined triangulated location of the ostium from selected landmarks in the image, displaying on a display device a target icon at the recalled probable location of the ostium; displaying on the display device the imageable member relative to the displayed target icon with the determined orientation of the imageable member at least as one of a “
n”
shape or a “
u”
shape for viewing by a user; andproviding the imageable member as a helix coil; wherein the instrument is configured to be moved by the user relative to the ostium; wherein determining the orientation of the imageable member includes; determining a center longitudinal line along a distal portion of the helix coil; determining at least one of a first line extending substantially parallel to and on a first side of the center longitudinal line or a second line extending substantially parallel to and on a second side of the center longitudinal line; determining at least one of a first period length of high contrast portions of the helix coil intersecting the first line along its length or determining a second period length of high contrast portions of the helix coil intersecting the second line along its length; and calculating an angle of the helix coil based on the determined first period length or the second period length for determining the orientation of the imageable marker.
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18. A method for moving an instrument to a selected location, comprising:
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determining an orientation of an imageable member based on an analysis of a region of interest in an image including the imageable member associated with the instrument, wherein the image is a single image; recalling a probable location of an ostium based upon a predetermined triangulated location of the ostium from selected landmarks in the image; displaying on a display device a target icon at the recalled probable location of the ostium; displaying on the display device the imageable member relative to the displayed target icon with the determined orientation of the imageable member at least as one of a “
n”
shape or a “
u”
shape for viewing by a user; andwherein the instrument is configured to be moved by the user relative to the ostium; wherein determining the orientation of the imageable member based on the analysis of the region of interest in the image includes determining whether the imageable member is imaged as a “
n”
shape or a “
u”
shape. - View Dependent Claims (19)
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Specification