Multiple shell construction to emulate chamber contraction with a mapping system
First Claim
1. A method of processing information, comprising the steps of:
- collecting, for at least one sensor, a plurality of sensor locations as the at least one sensor is swept within a heart chamber of a patient;
segregating, using a computer processing apparatus, the collected sensor locations into a plurality of sets in accordance with a respective phase of a cardiac cycle during or at which each sensor location was collected, each set having associated therewith a predetermined phase of the cardiac cycle; and
generating, for each set, a respective geometry of the heart chamber at the associated phase of the cardiac cycle, wherein a first geometry of the plurality of geometries is generated exclusively from a first set of said plurality of sets and a second geometry of the plurality of geometries is generated exclusively from a second set of said plurality of sets, said second set being different from said first set such that sensor locations in said first set are distinct from sensor locations in said second set, the sensor locations in said first set being associated with a first phase of the cardiac cycle during or at which said sensor locations in said first set were collected and the sensor locations in said second set being associated with a second phase of the cardiac cycle during or at which said sensor locations in said second set were collected, wherein said first phase is different from said second phase, and wherein said first phase comprises a first range of phase values and said second phase comprises a second range of phase values different from and non-overlapping with respect to said first range of phase values such that sensor locations in said first set are distinct from sensor locations in said second set by virtue of at least the phase of the cardiac cycle during or at which respective sensor locations were collected.
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Abstract
A system for constructing multiple shells (electronic models) indicative of the geometry and/or volume of a bodily lumen, such as a heart chamber, is configured to collect a plurality of location data points as the electrode is swept within the chamber. Each of the collected data points has an associated measured cardiac phase at which such point was acquired. The system is configured to segregate the collected electrode locations into sets based on the phase. Each set is characterized by a particular, associated phase of its constituent electrode locations. The system is configured to generate, for each set, a respective shell that will represent the chamber at the associated phase. The shells, once constructed, may be used for or in connection with a variety of diagnostic, mapping, and/or therapeutic procedures. The system is also configured to verify that the electrode is in contact with the heart tissue before using the collected data point in the shell construction (e.g., using a phase angle parameter to verify contact).
39 Citations
30 Claims
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1. A method of processing information, comprising the steps of:
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collecting, for at least one sensor, a plurality of sensor locations as the at least one sensor is swept within a heart chamber of a patient; segregating, using a computer processing apparatus, the collected sensor locations into a plurality of sets in accordance with a respective phase of a cardiac cycle during or at which each sensor location was collected, each set having associated therewith a predetermined phase of the cardiac cycle; and generating, for each set, a respective geometry of the heart chamber at the associated phase of the cardiac cycle, wherein a first geometry of the plurality of geometries is generated exclusively from a first set of said plurality of sets and a second geometry of the plurality of geometries is generated exclusively from a second set of said plurality of sets, said second set being different from said first set such that sensor locations in said first set are distinct from sensor locations in said second set, the sensor locations in said first set being associated with a first phase of the cardiac cycle during or at which said sensor locations in said first set were collected and the sensor locations in said second set being associated with a second phase of the cardiac cycle during or at which said sensor locations in said second set were collected, wherein said first phase is different from said second phase, and wherein said first phase comprises a first range of phase values and said second phase comprises a second range of phase values different from and non-overlapping with respect to said first range of phase values such that sensor locations in said first set are distinct from sensor locations in said second set by virtue of at least the phase of the cardiac cycle during or at which respective sensor locations were collected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A system for processing information, comprising:
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means for collecting, for at least one sensor, a plurality of sensor locations as the at least one sensor is swept within a heart chamber of a patient; means, including a computer processing apparatus, for segregating the collected sensor locations into a plurality of sets in accordance with a respective phase of a cardiac cycle during or at which each sensor location was collected, each set having associated therewith a predetermined phase of the cardiac cycle; and means for generating, for each set, a respective geometry of the heart chamber at the associated phase of the cardiac cycle, wherein a first geometry of the plurality of geometries is generated exclusively from a first set of said plurality of sets and a second geometry of the plurality of geometries is generated exclusively from a second set of said plurality of sets, said second set being different from said first set such that sensor locations in said first set are distinct from sensor locations in said second set, the sensor locations in said first set being associated with a first phase of the cardiac cycle during or at which said sensor locations in said first set were collected and the sensor locations in said second set being associated with a second phase of the cardiac cycle during or at which said sensor locations in said second set were collected, wherein said first phase is different from said second phase, and wherein said first phase comprises a first range of phase values and said second phase comprises a second range of phase values different from and non-overlapping with respect to said first range of phase values such that sensor locations in said first set are distinct from sensor locations in said second set by virtue of at least the phase of the cardiac cycle during or at which respective sensor locations were collected.
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25. A system for processing information, comprising:
a processing apparatus configured to collect, for at least one sensor, a plurality of sensor locations as the at least one sensor is swept within a heart chamber of a patient, said processing apparatus being further configured to segregate the collected sensor locations into a plurality of sets in accordance with a respective phase of a cardiac cycle during or at which each sensor location was collected, each set having associated therewith a predetermined phase of the cardiac cycle, said apparatus being further configured to generate, for each set, a respective geometry of the heart chamber at the associated phase of the cardiac cycle, wherein a first geometry of the plurality of geometries is generated exclusively from a first set of said plurality of sets and a second geometry of the plurality of geometries is generated exclusively from a second set of said plurality of sets, said second set being different from said first set such that sensor locations in said first set are distinct from sensor locations in said second set, the sensor locations in said first set being associated with a first phase of the cardiac cycle during or at which said sensor locations in said first set were collected and the sensor locations in said second set being associated with a second phase of the cardiac cycle during or at which said sensor locations in said second set were collected, wherein said first phase is different from said second phase, and wherein said first phase comprises a first range of phase values and said second phase comprises a second range of phase values different from and non-overlapping with respect to said first range of phase values such that sensor locations in said first set are distinct from sensor locations in said second set by virtue of at least the phase of the cardiac cycle during or at which respective sensor locations were collected. - View Dependent Claims (26, 27, 28, 29, 30)
Specification