US5855593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prioritized rule based method and apparatus for diagnosis and treatment for arrhythmias
Assignee: Medtronic Inc
•
Filing: 1997-06-12
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Granted: 1999-01-05
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Expires: 2017-06-12
Abstract
Abstract An implantable antiarrhythmia device which detects and classifies arrhythmias of the human heart, and delivers appropriate therapy. The device employs a method of arrhythmia classification based on a set of prioritized rules, each of the rules defining a plurality of criteria based upon characteristics of sensed depolarizations of heart tissue, each rule being met when the criteria associated with the rule are met. Some rules, when met, trigger delivery of antiarrhythmia therapy. Other rules, when met, inhibit delivery of antiarrhythmia therapy. The rules may be met simultaneously, and if so, the highest priority rule governs the behavior of the device.
Inventors
- 👤 Walter H. Olson
- 👤 William F. Kaemmerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:03
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/3621; A61N1/3622; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/283; A61B5/29; A61B5/316; A61B5/318; A61B5/346; A61B5/349; A61B5/361; A61B5/363; A61B5/72; A61B5/7235; A61B5/7264; G; G16; G16H; G16H50/00; G16H50/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
An anti-arrhythmia device, comprising: means for sensing depolarizations of two heart chambers; means for assigning beat codes to intervals between successive depolarizations of one of said heart chambers based on occurrences of depolarizations of the other of said heart chambers therebetween; means for defining a set of sequences of said beat codes, indicative of an arrhythmia; means for detecting occurrence of said arrhythmia comprising means for counting the number of sequential beat codes which fall within said defined set of sequences and for detecting occurrence of said arrhythmia in response to said counted number exceeding a predetermined value; and means responsive to detection of an occurrence of said arrhythmia for delivering an antiarrhythmia therapy.
Claim 2
Dependent Claim
114 words
An anti-arrhythmia device, comprising: means for sensing depolarizations of two heart chambers; means for assigning beat codes to intervals between successive depolarizations of one of said heart chambers based on occurrences of depolarizations of the other of said heart chambers therebetween; means for defining a set of sequences of said beat codes, indicative of an arrhythmia; means for detecting occurrence of said arrhythmia comprising means for counting the number of sequential beat codes which fall within said defined set of sequences and for detecting occurrence of said arrhythmia in response to said counted number exceeding a predetermined value; and means responsive to detection of an occurrence of said arrhythmia for delivering an antiarrhythmia therapy.
Claim 3
Dependent Claim
33 words
A device according to claim 1 wherein said counting means further comprises means for decrementing said counted number in response to beat codes which do not fall within said defined set of sequences.
Claim 4
Dependent Claim
37 words
A device according to claim 2 wherein said decrementing means comprises means for resetting said counted number to a preset value in response to a beat code which does not fall within said defined set of sequences.
Claim 5
Dependent Claim
37 words
A device according to claim 2 wherein said decrementing means comprises means for decrementing said counted number by a preset decrement in response to a beat code which does not fall within said defined set of sequences.
Claim 6
Dependent Claim
33 words
A device according to claim 2 or claim 3 or claim 4 wherein said detecting means is responsive to said counted number being decremented for determining that said arrhythmia is no longer occurring.
References Cited (Backward Citations)
US4316472A
Cited
US4316472C1
Cited
US4375817A
Cited
US4385585A
Cited
US4726380A
Cited
US4588970A
Cited
US4577633A
Cited
US4727877A
Cited
US4880005A
Cited
US4880005B1
Cited
US4800883A
Cited
EP0253505A2
Cited
US4830006A
Cited
US4830006B1
Cited
US4953551A
Cited
US4799493A
Cited
US4949719A
Cited
US5048521A
Cited
US5058599A
Cited
US5161827A
Cited
US5088488A
Cited
US5052388A
Cited
US5086772A
Cited
US5107850A
Cited
US5117824A
Cited
US5188105A
Cited
US5193550A
Cited
US5184615A
Cited
US5205283A
Cited
US5217021A
Cited
WO1993002746A1
Cited
US5193535A
Cited
US5312445A
Cited
US5312441A
Cited
US5243980A
Cited
WO1994019054A1
Cited
US5330508A
Cited
EP0617980A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-01-04 | 2002-07-06 | 2003-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-04 | 2006-07-06 | 2007-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-04 | 2010-07-06 | 2011-01-05 | $7700.00 | Window Closed / Lapsed |