Automated Mapping of Anatomical Features of Heart Chambers
First Claim
1. A method for locating at least one point on an endocardial ridge of a subject'"'"'s heart with a medical device actuated by a remote navigation system, the method comprising;
- advancing a medical device within a subject'"'"'s body near to an anatomical feature of the heart with the remote navigation system;
establishing contact by the medical device with the surface of the heart;
moving the medical device along the surface of the heart towards the anatomical feature until a loss of contact with the surface is sensed; and
determining the point where the loss of contact occurred to identify at least one point along the known anatomical feature.
6 Assignments
0 Petitions
Accused Products
Abstract
A method is provided to facilitate the movement of a medical device for automated mapping of anatomical surfaces of a subject'"'"'s heart with a remote navigation. The method may include one or more distinct movements for moving a medical device for mapping a portion of an anatomical surface of a subject'"'"'s heart. Upon establishing contact of the tip of the medical device with a surface of the heart, one method provides for moving the medical device along the surface of the heart towards an anatomical feature until a loss of contact with the surface is sensed, and determining the point where the loss of contact occurred to identify at least one point along the anatomical feature. The process may be repeated to identify a multiplicity of points that serve to define the ridge on the interior heart surface. The ridge location in the anatomical map can be used as a reference or guide to facilitate the further mapping of physiological properties and to plan therapy delivery during the medical procedure.
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Citations
24 Claims
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1. A method for locating at least one point on an endocardial ridge of a subject'"'"'s heart with a medical device actuated by a remote navigation system, the method comprising;
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advancing a medical device within a subject'"'"'s body near to an anatomical feature of the heart with the remote navigation system; establishing contact by the medical device with the surface of the heart; moving the medical device along the surface of the heart towards the anatomical feature until a loss of contact with the surface is sensed; and determining the point where the loss of contact occurred to identify at least one point along the known anatomical feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for locating at least one point on a ridge of a subject'"'"'s heart for anatomical mapping with a device actuated by a magnetic navigation system, the method comprising:
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advancing a medical device within a subject'"'"'s body to the point near the surface of the subject'"'"'s heart; applying a magnetic field to at least one magnetically responsive element in the tip of the medical device to cause the tip to deflect towards the interior heart wall and establish contact with the endocardial surface of the heart; retracting the medical device while the tip is deflected against the surface of the heart; and detecting a variable change indicative of a loss of contact between the tip and heart surface along the ridge, and determining the location of the tip at the point where a loss of contact occurred. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for locating at least one point on a ridge of a subject'"'"'s heart utilizing a magnetic navigation system, the method comprising:
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changing the direction of a magnetic field applied by the magnetic navigational system to cause a catheter tip to be deflected until the tip establishes contact with the surface of the heart at a given distance from the ridge of a subject'"'"'s heart; identifying a direction of movement to provide a continuous line of contact along the heart tissue surface towards the ridge; moving the catheter along the identified direction of movement towards the ridge until further movement is obstructed by the ridge; retracting the catheter until a loss of tip contact with the tissue surface is sensed, and determining the location of the point at which the tip loses contact with the tissue surface. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification