NON-INVASIVE EVALUATION OF FIT AND SIZING OF DEVICE PRIOR TO IMPLANT
First Claim
1. A non-invasive method for determining whether an expandable medical device is appropriate for implanting in a conduit of patient, comprising:
- imaging a portion of the conduit of the patient into which the medical device is to be implanted, wherein the imaging is performed during a plurality of portions of the cardiac cycle including (i) a portion of the cardiac cycle at which one or more dimensional characteristics of the conduit are at or near minimums and (ii) a portion of the cardiac cycle at which the one or more dimensional characteristics of the conduit are at or near maximums;
deriving, from the imaging, minimum and maximum dimensional characteristics of the conduit at a plurality of locations along a length of the portion of the conduit; and
determining that the medical device is appropriate for implantation if the maximum and minimum dimensional characteristics of the conduit at the predetermined locations along the length of the conduit are within predetermined ranges of maximum, expanded and minimum, contracted dimensional characteristics of the medical device at predetermined locations along the length of the medical device.
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Accused Products
Abstract
Maximum and minimum dimensional characteristics of a conduit are determined by imaging a portion of the conduit into which an expandable medical device is to be implanted at appropriate points in the cardiac cycle (or other suitable cycle, such as the respiratory cycle, or at other suitable times). The dimensional characteristics of the conduits within the portion of interest may be evaluated and compared to the maximum and minimum dimensional characteristics of the medical device to be implanted in the conduit to determine whether the medical device is of an appropriate size for properly fitting in the conduit.
12 Citations
20 Claims
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1. A non-invasive method for determining whether an expandable medical device is appropriate for implanting in a conduit of patient, comprising:
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imaging a portion of the conduit of the patient into which the medical device is to be implanted, wherein the imaging is performed during a plurality of portions of the cardiac cycle including (i) a portion of the cardiac cycle at which one or more dimensional characteristics of the conduit are at or near minimums and (ii) a portion of the cardiac cycle at which the one or more dimensional characteristics of the conduit are at or near maximums; deriving, from the imaging, minimum and maximum dimensional characteristics of the conduit at a plurality of locations along a length of the portion of the conduit; and determining that the medical device is appropriate for implantation if the maximum and minimum dimensional characteristics of the conduit at the predetermined locations along the length of the conduit are within predetermined ranges of maximum, expanded and minimum, contracted dimensional characteristics of the medical device at predetermined locations along the length of the medical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A computer implemented method for determining whether an expandable medical device is appropriate for implanting in a conduit of patient, comprising:
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receiving input of imaging data regarding a portion of the conduit of the patient into which the medical device is to be implanted, wherein the imaging data comprises data obtained during a plurality of portions of the cardiac cycle, including (i) a portion of the cardiac cycle at which dimensional characteristics of the conduit are at or near minimums and (ii) a portion of the cardiac cycle at which the dimensional characteristics of the conduit are at or near maximums; calculating minimum and maximum dimensional characteristics of the conduit at a plurality of locations along a length of the portion of the conduit based on the imaging data; and determining whether the maximum and minimum dimensional characteristics of the conduit at the predetermined locations along the length of the conduit are within predetermined ranges of maximum, expanded and minimum, contracted dimensional characteristics of the medical at predetermined locations along the length of the medical. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A device for determining whether an expandable medical device is appropriate for implanting in a conduit of patient, the device comprising:
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input apparatus configured to receive input of imaging data regarding a portion of the conduit of the patient into which the medical device is to be implanted, wherein the imaging data comprises data obtained during a plurality of portions of the cardiac cycle, including (i) a portion of the cardiac cycle at which dimensional characteristics of the conduit are at or near minimums and (ii) a portion of the cardiac cycle at which the dimensional characteristics of the conduit are at or near maximums; and computing apparatus configured to; calculate minimum and maximum dimensional characteristics of the conduit at a plurality of locations along a length of the portion of the conduit based on the imaging data; and determining whether the maximum and minimum dimensional characteristics of the conduit at the predetermined locations along the length of the conduit are within predetermined ranges of maximum, expanded and minimum, contracted dimensional characteristics of the medical device at predetermined locations along the length of the medical device. - View Dependent Claims (19, 20)
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Specification