Method and apparatus for mapping a chamber of a heart
First Claim
1. A method for intracardially mapping a condition of a chamber of a heart of a subject, said method comprising the steps of:
- a) providing a catheter having a distal tip, said catheter distal tip having at least one sensor contained therein or proximate thereto, said at least one sensor being capable of sensing condition information of said chamber and providing three-dimensional position information of the catheter tip in a positional frame of reference;
b) acquiring a first image of said chamber, said first image taken from a first projection and containing topological information of said chamber;
c) acquiring a second image of said chamber, said second image taken from a second projection different from said first projection, said second image containing topological information of said chamber, and wherein said first projection and said second projection are separated by an angle of about 75 degrees to about 105 degrees. d) registering said first image and said second image with said positional frame of reference;
e) advancing said distal tip of said catheter into said chamber;
f) navigating said distal tip of said catheter proximate an acquisition point in said chamber, said navigation guided by topological information contained in or derived from said first and said second images;
g) acquiring condition information and position information at said acquisition point with said at least one sensor;
h) repeating step (f) and (g) at additional acquisition points to generate a map of said condition in said chamber.
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Accused Products
Abstract
A method for intracardially mapping a condition such as an electrical or mechanical property of a chamber of a heart uses a catheter having a distal tip and at least one condition sensor contained therein or proximate thereto. The at least one sensor is capable of sensing condition information in the chamber and provides the three-dimensional position of the catheter tip in a positional frame of reference. The method includes the steps of acquiring first and second images of the chamber. The images are acquired from different projections and contain topological information of the chamber. The chamber images are registered with the positional frame of reference. The catheter distal tip is advanced into the catheter and is navigated to acquisition points under the guidance of topological information contained in or derived from the images. Condition and position information are acquired at each of the acquisition points, the points being sufficient in number and spacing to permit the generation of a map of the condition in the chamber. The topological information used to guide the navigation of the catheter is preferably a three-dimensional reconstruction of the chamber derived from the topological information contained in the images.
403 Citations
88 Claims
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1. A method for intracardially mapping a condition of a chamber of a heart of a subject, said method comprising the steps of:
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a) providing a catheter having a distal tip, said catheter distal tip having at least one sensor contained therein or proximate thereto, said at least one sensor being capable of sensing condition information of said chamber and providing three-dimensional position information of the catheter tip in a positional frame of reference;
b) acquiring a first image of said chamber, said first image taken from a first projection and containing topological information of said chamber;
c) acquiring a second image of said chamber, said second image taken from a second projection different from said first projection, said second image containing topological information of said chamber, and wherein said first projection and said second projection are separated by an angle of about 75 degrees to about 105 degrees. d) registering said first image and said second image with said positional frame of reference;
e) advancing said distal tip of said catheter into said chamber;
f) navigating said distal tip of said catheter proximate an acquisition point in said chamber, said navigation guided by topological information contained in or derived from said first and said second images;
g) acquiring condition information and position information at said acquisition point with said at least one sensor;
h) repeating step (f) and (g) at additional acquisition points to generate a map of said condition in said chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for intracardially mapping a condition of a chamber of a heart of a subject, said method comprising the steps of:
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a) providing a mapping catheter having a distal tip, said catheter distal tip having at least one sensor contained therein or proximate thereto, said at least one sensor being capable of sensing condition information of said chamber and providing three-dimensional position information of the catheter tip in a positional frame of reference;
b) providing a reconstruction of topological features of said chamber registered with said positional frame of reference, and wherein said reconstruction is based on;
i) a first image of said chamber taken from a first projection, and ii) a second image of said chamber taken from a second projection, wherein each of said first and said second images contain topological information of said chamber, and wherein said first projection and said second projection are separated by an angle of about 75 degrees to about 105 degrees;
c) advancing said distal tip of said catheter into said chamber;
d) navigating said distal tip of said catheter proximate an acquisition point in said chamber, said navigation guided by said topological features of said reconstruction;
e) acquiring condition information and position information at said acquisition point with said at least one sensor;
f) repeating step (d) and (e) at additional acquisition points throughout the chamber to generate a map of said condition in said chamber. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. Apparatus for intracardially mapping a condition of a chamber of a heart of a subject comprising:
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a) a catheter having a distal tip, said catheter distal tip having at least one sensor contained therein or proximate thereto, said at least one sensor being capable of sensing condition information of said chamber and providing three-dimensional position information of the catheter tip in a frame of reference;
b) image processing circuitry for registering a first image of said chamber and a second image of said chamber with said positional frame of reference, said first image and said second image taken from a first projection and a second projection relative to said chamber, said images containing topological information of said chamber, and wherein said first projection and said second projection are separated by an angle of about 75 degrees to about 105 degrees;
c) signal processing circuits for acquiring condition information and position information at a plurality of acquisition points in said chamber with said at least one sensor, said condition and position information permitting the generation of a map of said condition in said chamber. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. Apparatus for intracardially mapping a condition of a chamber of a heart of a subject comprising:
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a) a catheter having a distal tip, said catheter distal tip having at least one sensor contained therein or proximate thereto, said at least one sensor being capable of sensing condition information of said chamber and providing three-dimensional position information of the catheter tip in a frame of reference;
b) image processing circuits for constructing a topological reconstruction of said chamber registered with said frame of reference, said topological reconstruction including a first image of said chamber, said first image taken from a first projection and a second image of said chamber, said second image taken from a second projection different from said first projection, and wherein said first image and said second image are taken from an LAO projection and an RAO projection;
c) signal processing circuits for acquiring condition information and position information at a plurality of acquisition points in said chamber with said at least one sensor, said condition information and position information permitting the generation of a map of said condition in said chamber. - View Dependent Claims (47, 48, 49, 50, 51, 70)
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52. A method for intracardially mapping a condition of a chamber of a heart of a subject, said method comprising the steps of:
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a) providing a catheter having a distal tip, said catheter distal tip having at least one sensor contained therein or proximate thereto, said at least one sensor being capable of sensing condition information of said chamber and providing three-dimensional position information of the catheter tip in a positional frame of reference;
b) acquiring a first image of said chamber, said first image taken from a first projection and containing topological information of said chamber;
c) acquiring a second image of said chamber, said second image taken from a second projection different from said first projection, said second image containing topological information of said chamber, and wherein said first image and said second image are taken from an LAO projection and an RAO projection;
d) registering said first image and said second image with said positional frame of reference;
e) advancing said distal tip of said catheter into said chamber;
f) navigating said distal tip of said catheter proximate an acquisition point in said chamber, said navigation guided by topological information contained in or derived from said first and second images;
g) acquiring condition information and position information at said acquisition point with said at least one sensor;
h) repeating step (f) and (g) at additional acquisition points to generate a map of said condition in said chamber. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
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71. A method for intracardially mapping a condition of a chamber of a heart of a subject, said method comprising the steps of:
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a) providing a mapping catheter having a distal tip, said catheter distal tip having at least one sensor contained therein or proximate thereto, said at least one sensor being capable of sensing condition information of said chamber and providing three-dimensional position information of the catheter tip in a positional frame of reference;
b) providing a reconstruction of topological features of said chamber registered with said positional frame of reference, and wherein said reconstruction is based on;
i) a first image of said chamber taken from a first projection, and ii) a second image of said chamber taken from a second projection, wherein each of said first and said second images contain topological information of said chamber, and wherein said first image and said second image are taken from an LAO projection and an RAO projection;
c) advancing said distal tip of said catheter into said chamber;
d) navigating said distal tip of said catheter proximate an acquisition point in said chamber, said navigation guided by said topological features of said reconstruction;
e) acquiring condition information and position information at said acquisition point with said at least one sensor;
f) repeating step (d) and (e) at additional acquisition points throughout the chamber to generate a map of said chamber. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88)
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Specification