Patent US20030171805A1 successfully refreshed from Google Patents.
US5595183A
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US
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Systems and methods for examining heart tissue employing multiple electrode structures and roving electrodes
Assignee: EP Technologies Inc
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Filing: 1995-02-17
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Granted: 1997-01-21
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Expires: 2015-02-17
Abstract
Abstract Systems and methods use an array of multiple electrodes supported for operative association with a region of heart tissue, in tandem with a roving second electrode supported for movement relative to the multiple electrode means for operative association with selected, different regions of endocardial tissue within the heart. An analog or digital processing element conditions one of the multiple electrodes and the roving electrode to emit a pacing signal while the other one of the multiple electrodes and the roving electrode records paced electrograms occurring as a result of the pacing signal. A processing element and method input a template of a cardiac event of known diagnosis sensed using the array of multiple electrodes. The processing element and method inputs a sample of a cardiac event acquired by pacing from at least one roving electrode and sensed with the array of multiple electrodes. The processing element and method electronically compare the input sample to the input template and generates an output based upon the comparison. The output can aid the physician in locating potentially appropriate sites for ablation.
Inventors
- 👤 David K. Swanson
- 👤 Dorin Panescu
- 👤 James G. Whayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:02
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6846; A61B5/6847; A61B5/6852; A61B5/6855; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/283; A61B5/287; A61B5/6858; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61B90/00; A61B90/06; A61B2090/064; A61B2090/065; A61B2562/00; A61B2562/04; A61B2562/043
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
107 words
A system for acquiring electrograms comprising an array of multiple electrodes supported for operative association with a region of heart tissue, roving second electrode means supported for movement relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart, and a processing element coupled to the multiple electrodes and the roving second electrode means for conditioning one of the multiple electrodes and the roving second electrode means to emit a pacing signal and for conditioning the other one of the multiple electrodes and the roving second electrode means to record paced electrograms occurring as a result of the pacing signal.
Claim 2
Independent Claim
107 words
A system for acquiring electrograms comprising an array of multiple electrodes supported for operative association with a region of heart tissue, roving second electrode means supported for movement relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart, and a processing element coupled to the multiple electrodes and the roving second electrode means for conditioning one of the multiple electrodes and the roving second electrode means to emit a pacing signal and for conditioning the other one of the multiple electrodes and the roving second electrode means to record paced electrograms occurring as a result of the pacing signal.
Claim 3
Dependent Claim
28 words
A system according to claim 1 wherein the multiple electrode array is shaded to assume a radially expanded position in operative association with the region of endocardial tissue.
Claim 4
Dependent Claim
23 words
A system according to claim 1 wherein the roving second electrode means includes means for remote steering of the roving second electrode means.
Claim 5
Independent Claim
110 words
A system for analyzing electrograms comprising an array of multiple electrodes supported for operative association with a region of heart tissue, a roving second electrode supported for movement relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart, a processing element coupled to the multiple electrodes and the roving second electrode for conditioning one of the multiple electrodes and the roving second electrode to emit a pacing signal and for conditioning the other one of the multiple electrodes and the roving second electrode to record paced electrograms occurring as a result of the pacing signal, and means for processing the paced electrograms.
Claim 6
Independent Claim
110 words
A system for analyzing electrograms comprising an array of multiple electrodes supported for operative association with a region of heart tissue, a roving second electrode supported for movement relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart, a processing element coupled to the multiple electrodes and the roving second electrode for conditioning one of the multiple electrodes and the roving second electrode to emit a pacing signal and for conditioning the other one of the multiple electrodes and the roving second electrode to record paced electrograms occurring as a result of the pacing signal, and means for processing the paced electrograms.
Claim 7
Dependent Claim
28 words
A system according to claim 4 wherein the multiple electrode array is shaded to assume a radially expanded position in operative association with the region of endocardial tissue.
Claim 8
Dependent Claim
22 words
A system according to claim 4 wherein the roving second electrode includes means for remote steering of the roving second electrode means.
Claim 9
Independent Claim
159 words
A system for analyzing biopotential morphologies in myocardial tissue comprising an array of multiple electrodes supported for operative association with a region of heart tissue, a roving second electrode supported for movement relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart, and a processing element electrically coupled to the multiple electrodes the roving second electrode including first means for conditioning the multiple electrodes to sense a sample of biopotentials occurring during a cardiac event of known diagnosis and for creating a template based upon the sensed biopotential sample, second means for conditioning either one of the multiple electrodes or the roving second electrode to emit a pacing signal and to sense with the multiple electrodes a sample of the paced biopotentials occurring as a result of the pacing signal, and third means for electronically comparing the paced biopotential sample to the template and generating an output based upon the comparison.
Claim 10
Independent Claim
159 words
A system for analyzing biopotential morphologies in myocardial tissue comprising an array of multiple electrodes supported for operative association with a region of heart tissue, a roving second electrode supported for movement relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart, and a processing element electrically coupled to the multiple electrodes the roving second electrode including first means for conditioning the multiple electrodes to sense a sample of biopotentials occurring during a cardiac event of known diagnosis and for creating a template based upon the sensed biopotential sample, second means for conditioning either one of the multiple electrodes or the roving second electrode to emit a pacing signal and to sense with the multiple electrodes a sample of the paced biopotentials occurring as a result of the pacing signal, and third means for electronically comparing the paced biopotential sample to the template and generating an output based upon the comparison.
Claim 11
Dependent Claim
24 words
A system according to claim 7 wherein the output comprises a matching coefficient indicating how alike the paced biopotential sample is to the template.
Claim 12
Dependent Claim
21 words
A system according to claim 7 wherein the third means compares the paced biopotential sample to the template by matched filtering.
Claim 13
Dependent Claim
21 words
A system according to claim 7 wherein the third means compares the paced biopotential sample to the template by cross correlation.
Claim 14
Dependent Claim
25 words
A system according to claim 7 wherein the third means compares the paced biopotential sample to the template by deriving a norm of the difference.
Claim 15
Dependent Claim
42 words
A system according to claim 7 wherein the third means compares the paced biopotential sample to the template by using the template to create a matched filtered paced biopotential sample and by analyzing the symmetry of the matched filtered paced biopotential sample.
Claim 16
Dependent Claim
44 words
A system according to claim 7 wherein the sensed biopotential sample of the template comprises an electrogram of a first predetermined duration, and wherein the sensed paced biopotential sample comprises an electrogram of a second predetermined duration not shorter than the first predetermined duration.
Claim 17
Dependent Claim
15 words
A system according to claim 13 wherein the first and second predetermined durations are equal.
Claim 18
Dependent Claim
17 words
A system according to claim 14 wherein the first and second predetermined durations comprise one heart beat.
Claim 19
Dependent Claim
28 words
A system according to claim 7 wherein the multiple electrode array is shaped to assume a radially expanded position in operative association with the region of endocardial tissue.
Claim 20
Dependent Claim
22 words
A system according to claim 7 wherein the roving second electrode includes means for remote steering of the roving second electrode means.
Claim 21
Independent Claim
94 words
A method for examining heart tissue comprising the steps of locating an array of multiple electrodes in operative association with a region of heart tissue, moving a roving second electrode means relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart and conditioning one of the multiple electrodes and the roving second electrode means to emit a pacing signal and to record with the other one of the multiple electrodes and the roving second electrode means paced electrograms occurring as a result of the pacing signal.
Claim 22
Independent Claim
94 words
A method for examining heart tissue comprising the steps of locating an array of multiple electrodes in operative association with a region of heart tissue, moving a roving second electrode means relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart and conditioning one of the multiple electrodes and the roving second electrode means to emit a pacing signal and to record with the other one of the multiple electrodes and the roving second electrode means paced electrograms occurring as a result of the pacing signal.
Claim 23
Dependent Claim
16 words
A method according to claim 18 and further including the step of processing the paced electrograms.
Claim 24
Independent Claim
136 words
A method for analyzing biopotential morphologies in myocardial tissue comprising the steps of positioning an array of multiple electrodes in operative association with a region of heart tissue, moving a roving second electrode means relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart, conditioning the multiple electrodes to sense a sample of biopotentials occurring during a cardiac event of known diagnosis and for creating a template based upon the sensed biopotential sample, conditioning either one of the multiple electrodes or the roving second electrode means to emit a pacing signal and sensing with the multiple electrodes a sample of the paced biopotentials occurring as a result of the pacing signal, electronically comparing the paced biopotential sample to the template and generating an output based upon the comparison.
Claim 25
Independent Claim
136 words
A method for analyzing biopotential morphologies in myocardial tissue comprising the steps of positioning an array of multiple electrodes in operative association with a region of heart tissue, moving a roving second electrode means relative to the multiple electrodes for operative association with selected, different regions of endocardial tissue within the heart, conditioning the multiple electrodes to sense a sample of biopotentials occurring during a cardiac event of known diagnosis and for creating a template based upon the sensed biopotential sample, conditioning either one of the multiple electrodes or the roving second electrode means to emit a pacing signal and sensing with the multiple electrodes a sample of the paced biopotentials occurring as a result of the pacing signal, electronically comparing the paced biopotential sample to the template and generating an output based upon the comparison.
Claim 26
Dependent Claim
24 words
A method according to claim 20 wherein the output comprises a matching coefficient indicating how alike the paced biopotential sample is to the template.
Claim 27
Dependent Claim
19 words
A method according to claim 20 wherein the paced biopotential sample is compared to the template by matched filtering.
Claim 28
Dependent Claim
19 words
A method according to claim 20 wherein the paced biopotential sample is compared to the template by cross correlation.
Claim 29
Dependent Claim
23 words
A method according to claim 20 wherein the paced biopotential sample is compared to the template by deriving a norm of the difference.
Claim 30
Dependent Claim
41 words
A method according to claim 20 wherein the comparison compares the paced biopotential sample to the template by using the input template to create a matched filtered paced biopotential sample and by analyzing the symmetry of the matched filtered biopotential sample.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-21 | 2000-07-22 | 2001-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-21 | 2004-07-22 | 2005-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-21 | 2008-07-22 | 2009-01-21 | $7700.00 | Window Closed / Lapsed |