Source: http://www.google.fr/patents/US5447519
Timestamp: 2013-05-23 09:26:19
Document Index: 767043368

Matched Legal Cases: ['art.\n7', 'art.\n11', 'art.\n14', 'art.\n16', 'art.\n22', 'art.\n26', 'art.\n29', 'art.\n31']

Brevet US5447519 - Method and apparatus for discrimination of monomorphic and polymorphic ... - Google�BrevetsRecherche Images Maps Play YouTube Actualit�s Gmail Drive Plus » Recherche avanc�e dans les brevets | Historique Web | Connexion Recherche avanc�e dans les brevets BrevetsAn implantable cardioverter/defibrillator system provided with method and apparatus for discrimination between monomorphic arrhythmias, e.g. ventricular tachycardia from polymorphic arrhythmias, e.g. ventricular fibrillation. A fiducial point of each successive QRS complex is detected prompting the storage...http://www.google.fr/patents/US5447519?utm_source=gb-gplus-shareBrevet US5447519 - Method and apparatus for discrimination of monomorphic and polymorphic arrhythmias and for treatment thereof Num�ro de publicationUS5447519 AType de publicationOctroi Num�ro de demande08/206,486 Date de publication5 sept. 1995 Date de d�p�t19 mars 1994 Date de priorit�19 mars 1994 InventeursDavid K. Peterson Cessionnaire d'origineMedtronic, Inc. Classification aux �tats-Unis607/5600/518607/4 Classification internationaleA61N1/39 Classification coop�rativeA61N1/3962 Classification europ�enneA61N 1/39M2R�f�rencesCitations de brevets (30)Citations hors brevets (6) R�f�renc� par (203)Liens externesUSPTO Cession USPTO EspacenetMethod and apparatus for discrimination of monomorphic and polymorphic arrhythmias and for treatment thereofUS 5447519 A R�sum� An implantable cardioverter/defibrillator system provided with method and apparatus for discrimination between monomorphic arrhythmias, e.g. ventricular tachycardia from polymorphic arrhythmias, e.g. ventricular fibrillation. A fiducial point of each successive QRS complex is detected prompting the storage of sampled and digitized waveform data within a timing window bridging the point in time of fiducial point detection. Stored sets of such sampled wave shape data are compared data point to data point resulting in a sampled morphology index value for each compared set. The magnitude of the sampled morphology index value or a series such index values are analyzed to determine the presence of a single or a progression of beat-to-beat waveform changes indicative of a polymorphic single transition or progression of QRS complexes from monomorphic to polymorphic waveforms indicative of an arrhythmia that should be treated with aggressive cardioversion/defibrillation therapies. The system is preferably provided with a closely spaced and widely spaced pairs of electrodes for sensing each QRS complex of the patient's electrocardiogram. The closely spaced electrode pair is coupled to sense detect circuitry for identifying a predetermined fiducial point in the electrical signal associated with a ventricular depolarization and to counting and comparison circuitry for developing rate and onset data. The widely spaced pair of electrodes is coupled to sense and digitizing circuitry for developing the sampled waveform amplitude data from which the morphology index values are derived.
In conjunction with above application, I claim: 1. In a cardioverter/defibrillator of the type comprising treatment means for delivering a first therapy to a patient's heart to treat tachycardia and a second therapy to said patient's heart to treat fibrillation in response to criteria for discriminating tachycardia from fibrillation, a method of assisting the discrimination between tachycardia and fibrillation through a comparison of the degree of morphology of a series of cardiac electrical signals associated with cardiac depolarizations comprising the steps of: sensing electrical signals from said patient's heart accompanying the depolarization of a chamber or chambers of said patient's heart as the electrical signals successively appear; successively sampling, processing and temporarily storing the sensed electrical signals as sets of wave shape amplitude data values of the sensed electrical signals; successively determining the sampled point at which the sensed electrical signal meets predetermined sense detect criteria and for issuing a fiducial point signal indicative thereof; successively selecting sub-sets of the sets of the processed and stored wave shape data referenced to the fiducial point signal, the sub-sets of wave shape data of a series of data sets being consistently selected with respect to the fiducial point signal so the selected sub-sets of data are consistent in number and sample point position with respect to each fiducial point signal; successively positionally aligning the fiducial point signals of a series of subsets of wave shape data to positionally align the series of wave shape sub-set data; first, comparing the values of the aligned data of at least two successive selected sub-sets of the processed and stored wave shape data to derive a like numbered sub-set of morphology difference data; summing the sub-set of morphology difference data to provide a sampled morphology index value; providing a threshold morphology index value which, if exceeded is indicative of the onset of polymorphic cardiac rhythm indicative of fibrillation; and second, comparing the sampled morphology index value to the threshold morphology index value and generating a tachycardia or a fibrillation discrimination signal for use in confirming tachycardia or fibrillation and for selecting the appropriate therapy.
2. The method of claim 1 wherein: the step of sensing electrical signals from said patient's heart accompanying the depolarization of a chamber or chambers of said patient's heart as the electrical signals successively appear further comprises: providing a pair of widely spaced sense electrodes in relation to the heart and a first sense amplifier coupled to the widely spaced sense electrodes to detect the far field electrical signals accompanying depolarization of the heart; and the steps of successively determining the sample point at which the sensed electrical signal meets predetermined sense detect criteria and for issuing a fiducial point signal indicative thereof further comprises: providing a pair of closely spaced sense electrodes in relation to the heart and a second sense amplifier coupled to the closely spaced sense electrodes to detect the near field electrical signals accompanying depolarization of the heart; and sampling the value of the near field electrical signals and issuing the fiducial point signal when a sampled value meets the predetermined sense detect criteria.
3. The method of claim 2 wherein the second comparing step further comprises: measuring the cumulative variability of a series of sampled morphology index values of a series of depolarizations of said chamber or chambers of said patient's heart and for providing a further tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of said measured variability.
4. The method of claim 3 wherein the second comparing step further comprises: comparing the sampled morphology index value to the threshold morphology index value and generating a tachycardia or a fibrillation count signal for a series of sampled morphology index values; counting the relative numbers of fibrillation and tachycardia count signals in the series, whereby a progression from a monomorphic tachycardia to a polymorphic fibrillation may be confirmed; and providing the tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of the count.
5. The method of claim 4 wherein the first comparing step further comprises: periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference subset to derive the like numbered sub-set of morphology difference data in each case; and after the series of comparing steps, selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
6. The method of claim 5 wherein the first comparing step further comprises: adjusting the number of the series of comparing steps between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
7. The method of claim 1 wherein the second comparing step further comprises: measuring the cumulative variability of a series of sampled morphology index values of a series of depolarizations of said chamber or chambers of said patient's heart and for providing a further tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of said measured variability.
8. The method of claim 7 wherein the second comparing step further comprises: comparing the sampled morphology index value to the threshold morphology index value and generating a tachycardia or a fibrillation count signal for a series of sampled morphology index values; counting the relative numbers of fibrillation and tachycardia count signals in the series, whereby a progression from a monomorphic tachycardia to a polymorphic fibrillation may be confirmed; and providing the tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of the count.
9. The method of claim 8 wherein the first comparing step further comprises: periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference sub-set to derive the like numbered sub-set of morphology difference data in each case; and after the series of comparing steps, selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
10. The method of claim 9 wherein the first comparing step further comprises: adjusting the number of the series of comparing steps between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
11. The method of claim 1 wherein the second comparing step further comprises: comparing the sampled morphology index value to the threshold morphology index value and generating a tachycardia or a fibrillation count signal for a series of sampled morphology index values; counting the relative numbers of fibrillation and tachycardia count signals in the series, whereby a progression from a monomorphic tachycardia to a polymorphic fibrillation may be confirmed; and providing the tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of the count.
12. The method of claim 11 wherein the first comparing step further comprises: periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference sub- set to derive the like numbered sub-set of morphology difference data in each case; and after the series of comparing steps, selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
13. The method of claim 12 wherein the first comparing step further comprises: adjusting the number of the series of comparing steps between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
14. The method of claim 1 wherein the first comparing step further comprises: periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference subset to derive the like numbered sub-set of morphology difference data in each case; and after the series of comparing steps, selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
15. The method of claim 14 wherein the first comparing step further comprises: adjusting the number of the series of comparing steps between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
16. In a cardioverter/defibrillator of the type comprising treatment means for delivering a first therapy to a patient's heart to treat tachycardia and a second therapy to said patient's heart to treat fibrillation in response to criteria for discriminating tachycardia from fibrillation, a apparatus for assisting the discrimination between tachycardia and fibrillation through a comparison of the degree of morphology of a series of cardiac electrical signals associated with cardiac depolarizations comprising: means for sensing electrical signals from said patient's heart accompanying the depolarization of a chamber or chambers of said patient's heart as the electrical signals successively appear; means for successively sampling, processing and temporarily storing the sensed electrical signals as sets of wave shape data representative of a like numbered set of wave shape amplitude values of the sensed electrical signals; means for successively determining the sample point at which the sensed electrical signal meets predetermined sense detect criteria and for issuing a fiducial point signal indicative thereof; means for successively selecting sub-sets of the sets of the processed and stored wave shape data referenced to the fiducial point signal, the sub-sets of wave shape data of a series of data sets being consistently selected with respect to the fiducial point signal so the selected sub-sets of data are consistent in number and sample point position with respect to each fiducial point signal; means for successively positionally aligning the fiducial point signals of a series of sub-sets of wave shape data to positionally align the series of wave shape sub-set data; first means for comparing the values of the aligned data of at least two successive selected sub-sets of the processed and stored wave shape data to derive a like numbered sub-set of morphology difference data; means for summing the sub-set of morphology difference data to provide a sampled morphology index value; means for providing a threshold morphology index value which, if exceeded is indicative of the onset of polymorphic cardiac rhythm indicative of fibrillation; and second means for comparing the sampled morphology index value to the threshold morphology index value and generating a tachycardia or a fibrillation discrimination signal for use in confirming tachycardia or fibrillation and for selecting the appropriate therapy.
17. The apparatus of claim 16 wherein: said means for sensing electrical signals from said patient's heart accompanying the depolarization of a chamber or chambers of said patient's heart as the electrical signals successively appear further comprises: a pair of widely spaced sense electrodes adapted to be positioned in relation to the heart; and a first sense amplifier coupled to the widely spaced sense electrodes to detect the far field electrical signals accompanying depolarization of the heart; and said means for successively determining the sample point at which the sensed electrical signal meets predetermined sense detect criteria and for issuing a fiducial point signal indicative thereof further comprises: a pair of closely spaced sense electrodes adapted to be positioned in relation to the heart; and a second sense amplifier coupled to the closely spaced sense electrodes to detect the near field electrical signals accompanying depolarization of the heart; and means for issuing the fiducial point signal when a value of the near field electrical signal meets the predetermined sense detect criteria.
18. The apparatus of claim 17 wherein said second comparing means further comprises: means for measuring the cumulative variability of a series of sampled morphology index values of a series of depolarizations of said chamber or chambers of said patient's heart and for providing a further tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of said measured variability.
19. The apparatus of claim 18 wherein said second comparing means further comprises: means for comparing the sampled morphology index value to the threshold morphology index value and generating a tachycardia or a fibrillation count signal for a series of sampled morphology index values; means for counting the relative numbers of fibrillation and tachycardia count signals in the series, whereby a progression from a monomorphic tachycardia to a polymorphic fibrillation may be confirmed; and means for providing the tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of the count.
20. The apparatus of claim 19 wherein said first comparing means further comprises: means for periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; means for comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference sub-set to derive the like numbered sub-set of morphology difference data in each case; and means for selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
21. The apparatus of claim 20 wherein said first comparing means further comprises: means for adjusting the number of the series of comparisons between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
22. The apparatus of claim 16 wherein said second comparing means further comprises: means for measuring the cumulative variability of a series of sampled morphology index values of a series of depolarizations of said chamber or chambers of said patient's heart and for providing a further tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of said measured variability.
23. The apparatus of claim 22 wherein said second comparing means further comprises: means for comparing the sampled morphology index value to the threshold morphology index value and generating a tachycardia or a fibrillation count signal for a series of sampled morphology index values; means for counting the relative numbers of fibrillation and tachycardia count signals in the series, whereby a progression from a monomorphic tachycardia to a polymorphic fibrillation may be confirmed; and means for providing the tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of the count.
24. The apparatus of claim 23 wherein said first comparing means further comprises: means for periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; means for comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference sub-set to derive the like numbered sub-set of morphology difference data in each case; and means for selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
25. The apparatus of claim 24 wherein said first comparing means further comprises: means for adjusting the number of the series of comparing steps between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
26. The apparatus of claim 16 wherein said second comparing means further comprises: means for comparing the sampled morphology index value to the threshold morphology index value and generating a tachycardia or a fibrillation count signal for a series of sampled morphology index values; means for counting the relative numbers of fibrillation and tachycardia count signals in the series, whereby a progression from a monomorphic tachycardia to a polymorphic fibrillation may be confirmed; and means for providing the tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of the count.
27. The apparatus of claim 26 wherein said first comparing means further comprises: means for periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; means for comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference sub-set to derive the like numbered sub-set of morphology difference data in each case; and means for selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
28. The apparatus of claim 27 wherein said first comparing means further comprises: means for adjusting the number of the series of comparing steps between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
29. The apparatus of claim 16 wherein said first comparing means further comprises: means for periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; means for comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference sub-set to derive the like numbered sub-set of morphology difference data in each case; and means for selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
30. The apparatus of claim 29 wherein said first comparing means further comprises: means for adjusting the number of the series of comparing steps between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
31. In a cardioverter/defibrillator of the type comprising treatment means for delivering a first therapy to a patient's heart to treat a monomorphic arrhythmia and a second therapy to said patient's heart to treat a polymorphic arrhythmia in response to criteria for discriminating therebetween, a method of assisting the discrimination through a comparison of the degree of morphology of the far field electrogram associated with cardiac depolarizations recurring at a tachycardia rate comprising the steps of: providing a first pair of closely spaced electrodes in or adjacent to a chamber of a heart from which a near field electrogram may be detected; providing a second pair of widely spaced electrodes in or adjacent to a chamber of a heart from which a far field electrogram may be detected; sensing the near field waveform of the electrogram successively appearing across the first pair of electrodes and successively determining a fiducial point at which the sensed waveform amplitude value meets predetermined sense detect criteria and issuing a fiducial point signal indicative thereof; sensing the far field waveform of the electrogram successively appearing across the second pair of electrodes and providing a set of far field sampled amplitude data; aligning successive sets of far field sampled amplitude data positionally aligned to the near field fiducial point of each such data set; processing the values of the aligned successive sets of data to provide a sampled morphology index value; and generating a tachycardia or a fibrillation discrimination signal as a function of the sampled morphology index value for use in confirming monomorphic tachycardia or polymorphic tachycardia or fibrillation and for selecting the appropriate therapy.
32. The method of claim 31 wherein the generating step further comprises: providing a threshold morphology index value which, if exceeded is indicative of the onset of polymorphic cardiac rhythm; and comparing the sampled morphology index value to the threshold morphology index value and generating a polymorphic or a monomorphic discrimination signal for use in confirming the nature of the arrhythmia and for selecting the appropriate therapy.
33. The method of claim 32 wherein the processing step further comprises: establishing event data windows in alignment with and extending for predetermined time windows with respect to each detected fiducial point; comparing sub-sets of the far field sampled amplitude data values of the aligned successive sets of data falling within the event data windows to develop a subset of sampled amplitude difference data values; and summing the sampled amplitude difference data values to derive the sampled morphology index value.
34. The method of claim 31 wherein the processing step further comprises: establishing event data windows in alignment with and extending for predetermined time windows with respect to each detected fiducial point; comparing sub-sets of the far field sampled amplitude data values of the aligned successive sets of data falling within the event data windows to develop a subset of sampled amplitude difference data values; and summing the sampled amplitude difference data values to derive the sampled morphology index value.
35. The method of claim 31 wherein the comparing step further comprises: measuring the cumulative variability of a series of sampled morphology index values of a series of depolarizations of said chamber or chambers of said patient's heart and providing a further morphology discrimination signal for selecting between the appropriate therapies as a function of said measured variability.
36. The method of claim 31 wherein the comparing step further comprises: comparing the sampled morphology index value to the threshold morphology index value and generating a monomorphic or polymorphic count signal for a series of sampled morphology index values; counting the relative numbers of fibrillation and tachycardia count signals in the series, whereby a progression from a monomorphic tachycardia to a polymorphic fibrillation may be confirmed; and providing the tachycardia or fibrillation discrimination signal for selecting between the appropriate therapies as a function of the count.
37. The method of claim 31 wherein the processing step further comprises: periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating mono-morphology; comparing the values of the aligned data of a succeeding series of selected subsets of the processed and stored wave shape data to the reference sub-set to derive the like numbered sub-set of morphology difference data in each case; and after the series of comparing steps, selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating mono-morphology, if any.
38. In a cardioverter/defibrillator of the type comprising treatment means for delivering a first therapy to a patient's heart to treat a monomorphic arrhythmia and a second therapy to said patient's heart to treat polymorphic arrhythmia in response to criteria for discriminating therebetween, apparatus for assisting the discrimination through a comparison of the degree of morphology of a series of cardiac electrical signals associated with cardiac depolarizations recurring at a tachycardia rate comprising: means for sensing near field and far field electrical signals from said patient's heart accompanying the depolarization of a chamber or chambers of said patient's heart as the electrical signals successively appear; means for sampling the far field electrical signals and for providing sets of waveform data representative of a like numbered set of wave shape amplitude values of the sensed far field electrical signals; means for successively determining a fiducial point at which the sensed near field electrical signal amplitude values meets predetermined sense detect criteria and for issuing a fiducial point signal indicative thereof; means for aligning successive sets of far field wave shape data positionally aligned with the fiducial point of each corresponding near field electrical signal; means for processing the values of the aligned data of at least two selected sub-sets of the stored far field wave shape data to provide a sampled morphology index value; means for providing a threshold morphology index value which, if exceeded is indicative of the onset of polymorphic cardiac rhythm indicative of fibrillation; and means for comparing the sampled morphology index value to the threshold morphology index value and generating a morphology discrimination signal for use in confirming monomorphic tachycardia or polymorphic tachycardia or fibrillation and for selecting the appropriate therapy.
39. The apparatus of claim 38 wherein: said sensing means for sensing electrical signals from said patient's heart accompanying the depolarization of a chamber or chambers of said patient's heart as the electrical signals successively appear further comprises: a pair of widely spaced sense electrodes adapted to be positioned in relation to the heart; and a first sense amplifier coupled to the widely spaced sense electrodes to detect the far field electrical signals accompanying depolarization of the heart; and said means for successively determining the fiducial point further comprises: a pair of closely spaced sense electrodes adapted to be positioned in relation to the heart; and a second sense amplifier coupled to the closely spaced sense electrodes to detect the near field electrical signals accompanying depolarization of the heart; and means for issuing the fiducial point signal when a value of the near field electrical signal meets the predetermined sense detect criteria.
40. The apparatus of claim 38 wherein said comparing means further comprises: means for measuring the cumulative variability of a series of sampled morphology index values of a series of depolarizations of said chamber or chambers of said patient's heart and for providing a further morphology discrimination signal for selecting between the appropriate therapies as a function of said measured variability.
41. The apparatus of claim 38 wherein said comparing means further comprises: means for comparing the sampled morphology index value to the threshold morphology index value and generating a monomorphic or a polymorphic count signal for a series of sampled morphology index values; means for counting the relative numbers of monomorphic and polymorphic count signals in the series, whereby a progression from a monomorphic tachycardia to a polymorphic tachycardia or fibrillation may be confirmed; and means responsive to the counted number for selecting between the appropriate therapies as a function of the count.
42. The apparatus of claim 38 wherein said processing means further comprises: means for periodically selecting and storing a reference sub-set of processed and stored wave shape data having a sampled morphology index value confirmed as indicating tachycardia; means for comparing the values of the aligned data of a succeeding series of selected sub-sets of the processed and stored wave shape data to the reference sub-set to derive the like numbered sub-set of morphology difference data in each case; and means for selecting and storing an updated reference sub-set of processed and stored data having a sampled morphology index value confirmed as indicating tachycardia, if any.
43. The apparatus of claim 42 wherein said comparing means further comprises: means for adjusting the number of the series of comparisons between the selection and storage of the updated reference sub-set as a function of rate or stability of a series of depolarizations of said chamber or chambers of said patient's heart.
Citations de brevets Brevet cit� Date de d�p�t Date de publication D�posant TitreUS393722610 juil. 197410 f�vr. 1976Medtronic, Inc.Arrhythmia prevention apparatusUS408814018 juin 19769 mai 1978Medtronic, Inc.Demand anti-arrhythmia pacemakerUS435449723 mai 197719 oct. 1982Medtronic, Inc.Cardiac depolarization detection apparatusUS437581722 d�c. 19808 mars 1983Medtronic, Inc.Implantable cardioverterUS43845856 mars 198124 mai 1983Medtronic, Inc.Synchronous intracardiac cardioverterUS45482096 f�vr. 198422 oct. 1985Medtronic, Inc.Energy converter for implantable cardioverterUS457763328 mars 198425 mars 1986Medtronic, Inc.Rate scanning demand pacemaker and method for treatment of tachycardiaUS45776342 juil. 198525 mars 1986Gessman; Lawrence J.Method and apparatus for alleviating paroxysmal atrail tachycardiaUS458797022 janv. 198513 mai 1986Telectronics N.V.Tachycardia reversion pacerUS469325323 mars 198115 sept. 1987Medtronic, Inc.Automatic implantable defibrillator and pacerUS47125548 avr. 198515 d�c. 1987Baylor College Of MedicineElectronic system to distinguish between sinus and nonsinus atrial depolarizations which do not stimulate ventricular depolarizations in response to nonsinus atrial depolarizationsUS472638015 oct. 198523 f�vr. 1988Telectronics, N.V.Implantable cardiac pacer with discontinuous microprocessor, programmable antitachycardia mechanisms and patient data telemetryUS475475312 nov. 19855 juil. 1988Medtronic, Inc.System for sensing electrical depolarization wave signals and their directionUS479031727 oct. 198613 d�c. 1988Davies; David W.Apparatus for recognition and termination of ventricular tachycardia and ventricular fibrillationUS479949313 mars 198724 janv. 1989Cardiac Pacemakers, Inc.Dual channel coherent fibrillation detection systemUS48008832 avr. 198631 janv. 1989Intermedics, Inc.Apparatus for generating multiphasic defibrillation pulse waveformUS481964318 nov. 198611 avr. 1989Mieczyslaw MirowskiMethod and apparatus for cardioverter/pacer featuring a blanked pacing channel and a rate detect channel with AGCUS483000617 juin 198616 mai 1989Intermedics, Inc.Implantable cardiac stimulator for detection and treatment of ventricular arrhythmiasUS48800047 juin 198814 nov. 1989Intermedics, Inc.Implantable cardiac stimulator with automatic gain control and bandpass filtering in feedback loopUS488000523 mai 198814 nov. 1989Intermedics, Inc.Pacemaker for detecting and terminating a tachycardiaUS494971926 avr. 198921 ao�t 1990Ventritex, Inc.Method for cardiac defibrillationUS494973012 mai 198921 ao�t 1990Cobben; AndreeMonitoring device intended especially for parturition and its applicationUS49535517 ao�t 19894 sept. 1990Medtronic, Inc.Method of defibrillating a heartUS508677230 juil. 199011 f�vr. 1992Telectronics Pacing Systems, Inc.Arrhythmia control system employing arrhythmia recognition algorithmUS511782414 nov. 19902 juin 1992Medtronic, Inc.Apparatus for monitoring electrical physiologic signalsUS516342714 nov. 199017 nov. 1992Medtronic, Inc.Apparatus for delivering single and multiple cardioversion and defibrillation pulsesUS517815418 sept. 199012 janv. 1993Sorba Medical Systems, Inc.Impedance cardiograph and method of operation utilizing peak aligned ensemble averagingUS518810514 nov. 199023 f�vr. 1993Medtronic, Inc.Apparatus and method for treating a tachyarrhythmiaUS519353527 ao�t 199116 mars 1993Medtronic, Inc.Method and apparatus for discrimination of ventricular tachycardia from ventricular fibrillation and for treatment thereofUS53664874 nov. 199322 nov. 1994Angeion CorporationFibrillation and tachycardia detectionCitations hors brevetsR�f�rence1DuFault et al., "Dual Lead Fibrillation Detection for Implantable Defibrillators via LMS Algorithm" Computers in Cardiology, 10-7-10, 1986, Boston, Mass, IEEE Computer Soc. Press, 163-6.2DuFault et al., Dual Lead Fibrillation Detection for Implantable Defibrillators via LMS Algorithm Computers in Cardiology, 10 7 10, 1986, Boston, Mass, IEEE Computer Soc. Press, 163 6.3Mercando, et al., "Measurement of Differences in Timing and Sequence Between Two Ventricular Electrodes as a Means of Tachycardia Differentiation", PACE, vol. 9, Nov.-Dec. 1986 Part II, 1069-78.4Mercando, et al., Measurement of Differences in Timing and Sequence Between Two Ventricular Electrodes as a Means of Tachycardia Differentiation , PACE, vol. 9, Nov. Dec. 1986 Part II, 1069 78.5Olson, et al., "Onset and Stability for Ventricular Tachyarrhythmia Detection in an Implantable Pacer-Cardioverter-Defibrillator", Computers in Cardiology, Oct. 7-10, 1986, 167-170.6Olson, et al., Onset and Stability for Ventricular Tachyarrhythmia Detection in an Implantable Pacer Cardioverter Defibrillator , Computers in Cardiology, Oct. 7 10, 1986, 167 170. R�f�renc� par Brevet citant Date de d�p�t Date de publication D�posant TitreUS559518317 f�vr. 199521 janv. 1997Ep Technologies, Inc.Systems and methods for examining heart tissue employing multiple electrode structures and roving electrodesUS560108817 f�vr. 199511 f�vr. 1997Ep Technologies, Inc.Systems and methods for filtering artifacts from composite signalsUS560515717 f�vr. 199525 f�vr. 1997Ep Technologies, Inc.Systems and methods for filtering signals derived from biological eventsUS560915717 f�vr. 199511 mars 1997Ep Technologies, Inc.Systems and methods for analyzing biopotential morphologies in body tissue using iterative techniquesUS563042517 f�vr. 199520 mai 1997Ep Technologies, Inc.Systems and methods for adaptive filtering artifacts from composite signalsUS564507025 sept. 19958 juil. 1997Ventritex, Inc.Method and apparatus for determining the origins of cardiac arrhythmias morphology dynamicsUS571130517 f�vr. 199527 janv. 1998Ep Technologies, Inc.Systems and methods for acquiring endocardially or epicardially paced electrocardiogramsUS571280125 sept. 199527 janv. 1998Pacesetter, Inc.Method for characterizing dynamical systemsUS572241617 f�vr. 19953 mars 1998Ep Technologies, Inc.Systems and methods for analyzing biopotential morphologies in heart tissue to locate potential ablation sitesUS57760699 janv. 19977 juil. 1998Hewlett-Packard CompanyMethod and system for quantitatively determining EKG waveform organizationUS578287615 avr. 199621 juil. 1998Medtronic, Inc.Method and apparatus using windows and an index value for identifying cardic arrhythmiasUS57953032 sept. 199718 ao�t 1998Ep Technologies, Inc.Systems and methods for making time-sequential measurements of biopotentials sensed in myocardial tissueUS580046530 oct. 19961 sept. 1998Medtronic, Inc.System and method for multisite steering of cardiac stimuliUS58715086 ao�t 199716 f�vr. 1999Medtronic, Inc.Apparatus for cardiac pacing in transplantUS591623730 avr. 199829 juin 1999Medtronic, Inc.Power control apparatus and method for a body implantable medical deviceUS595466221 oct. 199721 sept. 1999Ep Technologies, Inc.Systems and methods for acquiring endocardially or epicardially paced electrocardiogramsUS596799528 avr. 199819 oct. 1999University Of Pittsburgh Of The Commonwealth System Of Higher EducationSystem for prediction of life-threatening cardiac arrhythmiasUS597396830 avr. 199826 oct. 1999Medtronic, Inc.Apparatus and method for write protecting a programmable memoryUS61014096 oct. 19978 ao�t 2000Ep Technologies, Inc.Systems and methods for analyzing biopotential morphologies in body tissueUS61156279 avr. 19995 sept. 2000Pacesetter, Inc.Intracardiac predictor of imminent arrhythmiaUS61344709 nov. 199817 oct. 2000Medtronic, Inc.Method and apparatus for treating a tachyarrhythmic patientUS614823030 janv. 199814 nov. 2000Uab Research FoundationMethod for the monitoring and treatment of spontaneous cardiac arrhythmiasUS616218028 d�c. 199819 d�c. 2000Medtronic, Inc.Non-invasive cardiac monitoring system and method with communications interfaceUS61637219 avr. 199919 d�c. 2000Medtronic, Inc.Power consumption reduction in medical devices by employing pipeline architectureUS61673039 avr. 199926 d�c. 2000Medtronic, Inc.Power consumption reduction in medical devices employing just-in-time clockUS61854549 avr. 19996 f�vr. 2001Medtronic, Inc.Power consumption reduction in medical devices employing just-in-time voltage controlUS618892410 f�vr. 199913 f�vr. 2001Ep TechnologiesSystems and methods for acquiring making time-sequential measurements of biopotentials sensed in myocardial tissueUS61922732 d�c. 199720 f�vr. 2001The Cleveland Clinic FoundationNon-programmable automated heart rhythm classifierUS620026516 avr. 199913 mars 2001Medtronic, Inc.Peripheral memory patch and access method for use with an implantable medical deviceUS62053574 d�c. 199820 mars 2001Uab Research FoundationMethods and apparatus for detecting and treating medical conditions of the heartUS621242822 mai 20003 avr. 2001Cardiac Pacemakers, Inc.Multiple stage morphology-based system detecting ventricular tachycardia and supraventricular tachycardiaUS622307812 mars 199924 avr. 2001Cardiac Pacemakers, Inc.Discrimination of supraventricular tachycardia and ventricular tachycardia eventsUS622308316 avr. 199924 avr. 2001Medtronic, Inc.Receiver employing digital filtering for use with an implantable medical deviceUS624031319 avr. 199929 mai 2001Cardiac Pacemakers, Inc.Cardiac rhythm management system with prevention of double counting of eventsUS626655412 f�vr. 199924 juil. 2001Cardiac Pacemakers, Inc.System and method for classifying cardiac complexesUS627573217 juin 199814 ao�t 2001Cardiac Pacemakers, Inc.Multiple stage morphology-based system detecting ventricular tachycardia and supraventricular tachycardiaUS629547316 avr. 199925 sept. 2001Medtronic, Inc.Digital delay line receiver for use with an implantable medical deviceUS630809417 ao�t 199923 oct. 2001University Of Pittsburgh Of The Commonwealth System Of Higher EducationSystem for prediction of cardiac arrhythmiasUS630809512 f�vr. 199923 oct. 2001Cardiac Pacemakers, Inc.System and method for arrhythmia discriminationUS631238812 mars 19996 nov. 2001Cardiac Pacemakers, Inc.Method and system for verifying the integrity of normal sinus rhythm templatesUS64081997 juil. 200018 juin 2002Biosense, Inc.Bipolar mapping of intracardiac potentials with electrode having blood permeable coveringUS643043520 nov. 20006 ao�t 2002Cardiac Pacemakers, Inc.Multiple state morphology-based system detecting ventricular tachycardia and supraventricular tachycardiaUS643441728 mars 200013 ao�t 2002Cardiac Pacemakers, Inc.Method and system for detecting cardiac depolarizationUS64384103 mai 200120 ao�t 2002Cardiac Pacemakers, Inc.System and method for a classifying cardiac complexesUS644594829 mars 20003 sept. 2002Medtronic, Inc.Implantable medical device having a substantially flat batteryUS644950314 juil. 199910 sept. 2002Cardiac Pacemakers, Inc.Classification of supraventricular and ventricular cardiac rhythms using cross channel timing algorithmUS645956619 mai 20001 oct. 2002Medtronic, Inc.Implantable medical device having flat electrolytic capacitor with laser welded coverUS648073430 juin 200012 nov. 2002Cardiac Science Inc.Cardiac arrhythmia detector using ECG waveform-factor and its irregularityUS648405520 sept. 200019 nov. 2002Cardiac Pacemakers, Inc.Discrimination of supraventricular tachycardia and ventricular tachycardia eventsUS648405721 d�c. 200019 nov. 2002Uab Research FoundationPacing methods and devices for treating cardiac arrhythmias and fibrillationUS648744120 nov. 200026 nov. 2002Ep Technologies, Inc.Systems and methods for acquiring and analyzing electrograms in myocardial tissueUS649895113 oct. 200024 d�c. 2002Medtronic, Inc.Implantable medical device employing integral housing for a formable flat batteryUS653925712 sept. 200025 mars 2003Uab Research FoundationMethod and apparatus for treating cardiac arrhythmiaUS65392586 oct. 200025 mars 2003Medtronic Physio-Control Manufacturing Corp.Energy adjusting circuit for producing an ultra-low energy defibrillation waveform with fixed pulse width and fixed tiltUS661507514 mars 20012 sept. 2003The Regents Of The University Of CaliforniaQRST subtraction using an adaptive template for analysis of TU wave obscured atrial activityUS664729131 mars 200011 nov. 2003Medtronic, Inc.Method and apparatus for cardiac defibrillationUS666357331 mai 200216 d�c. 2003Biosense, Inc.Bipolar mapping of intracardiac potentials using recessed electrodesUS667855920 mars 200013 janv. 2004Medtronic, Inc.Implantable medical device having a capacitor assembly with linerUS668410031 oct. 200027 janv. 2004Cardiac Pacemakers, Inc.Curvature based method for selecting features from an electrophysiologic signals for purpose of complex identification and classificationUS668754021 nov. 20013 f�vr. 2004Cardiac Pacemakers, Inc.Discrimination of supraventricular tachycardia and ventricular tachycardia eventsUS670805830 avr. 200116 mars 2004Cardiac Pacemakers, Inc.Normal cardiac rhythm template generation system and methodUS672857214 ao�t 200227 avr. 2004Cardiac Pacemakers, Inc.System and method for classifying cardiac complexesUS674826725 juil. 20018 juin 2004Biotronik Mess-Und Therapiegeraete Gmbh & Co.Heart therapy deviceUS675276517 nov. 200022 juin 2004Medtronic, Inc.Method and apparatus for monitoring heart rate and abnormal respirationUS67545347 mars 200122 juin 2004Cardiac Pacemakers, Inc.Cardiac rhythm management system with prevention of double counting of eventsUS681028313 sept. 200126 oct. 2004Medtronic, Inc.Multiple templates for filtering of far field R-wavesUS685683527 ao�t 200115 f�vr. 2005Cameron Health, Inc.Biphasic waveform for anti-tachycardia pacing for a subcutaneous implantable cardioverter-defibrillatorUS688907912 avr. 20023 mai 2005Cardiac Pacemakers, Inc.Method and system for characterizing supraventricular rhythm during cardiac pacingUS688908123 juil. 20023 mai 2005Cardiac Pacemakers, Inc.Classification of supraventricular and ventricular cardiac rhythms using cross channel timing algorithmUS690728920 nov. 200114 juin 2005Cardiac Pacemakers, Inc.Triggered storage of diagnostic data associated with compromised resynchronization therapyUS695070215 juil. 200227 sept. 2005Cardiac Pacemakers, Inc.Use of curvature based features for beat detectionUS695921222 oct. 200125 oct. 2005Cardiac Pacemakers, Inc.System and method for arrhythmia discriminationUS69964342 ao�t 20017 f�vr. 2006Cardiac Pacemakers, Inc.Method and system for verifying the integrity of normal sinus rhythm templatesUS70317648 nov. 200218 avr. 2006Cardiac Pacemakers, Inc.Cardiac rhythm management systems and methods using multiple morphology templates for discriminating between rhythmsUS703177031 d�c. 200218 avr. 2006Cardiac Pacemakers, Inc.Distinguishing sinus tachycardia from atrial fibrillation and atrial flutter through analysis of atrial channel wavelet transformsUS70394639 d�c. 20032 mai 2006Cardiac Pacemakers, Inc.Discrimination of supraventricular tachycardia and ventricular tachycardia eventsUS706231428 d�c. 200113 juin 2006Cardiac Pacemakers, Inc.Cardiac rhythm management device with triggered diagnostic modeUS706231621 janv. 200313 juin 2006Cardiac Pacemakers, Inc.Cross chamber interval correlationUS707628929 ao�t 200311 juil. 2006Medtronic, Inc.Methods and apparatus for discriminating polymorphic tachyarrhythmias from monomorphic tachyarrhythmias facilitating detection of fibrillationUS708559923 oct. 20021 ao�t 2006Cardiac Pacemakers, Inc.Characterization of supraventricular rhythm using collected cardiac beatsUS710340529 ao�t 20035 sept. 2006Medtronic, Inc.Methods and apparatus for discriminating polymorphic tachyarrhythmias from monomorphic tachyarrhythmias facilitating detection of fibrillationUS711382413 nov. 200126 sept. 2006Cardiac Pacemakers, Inc.Apparatus and method for treating ventricular tachyarrhythmiasUS713067729 ao�t 200331 oct. 2006Medtronic, Inc.Methods and apparatus for discriminating polymorphic tachyarrhythmias from monomorphic tachyarrhythmias facilitating detection of fibrillationUS713960831 juil. 200221 nov. 2006Uab Research FoundationPacing methods and devices using feedback controlled timingUS716229810 sept. 20029 janv. 2007Uab Research FoundationDevices for detecting the presence of cardiac activity following administration of defibrillation therapyUS716774713 mai 200323 janv. 2007Medtronic, Inc.Identification of oversensing using sinus R-wave templateUS718481526 f�vr. 200427 f�vr. 2007Cardiac Pacemakers, Inc.System and method for selection of morphology templatesUS718481825 mars 200227 f�vr. 2007Cardiac Pacemakers, Inc.Method and system for characterizing a representative cardiac beat using multiple templatesUS720353513 oct. 199910 avr. 2007Cardiac Pacemakers, Inc.System and method for classifying tachycardia arrhythmias having 1:1 atrial-to-ventricular rhythmsUS722817323 nov. 20045 juin 2007Cardiac Pacemakers, Inc.Cardiac tachyarrhythmia therapy selection based on patient response informationUS722817622 juil. 20045 juin 2007Cardiac Pacemakers, Inc.Systems, devices, and methods for tachyarrhythmia discrimination or therapy decisionsUS72429782 d�c. 200410 juil. 2007Medtronic, Inc.Method and apparatus for generating a template for arrhythmia detection and electrogram morphology classificationUS72489211 juin 200424 juil. 2007Cameron Health, Inc.Method and devices for performing cardiac waveform appraisalUS727774723 nov. 20042 oct. 2007Cardiac Pacemakers, Inc.Arrhythmia memory for tachyarrhythmia discriminationUS727775323 sept. 20022 oct. 2007Stephen Colin BrownDefibrillatorUS728984512 d�c. 200330 oct. 2007Cardiac Pacemakers, Inc.Curvature based method for selecting features from an electrophysiologic signal for purpose of complex identification and classificationUS733075727 mai 200412 f�vr. 2008Cameron Health, Inc.Method for discriminating between ventricular and supraventricular arrhythmiasUS734639231 janv. 200318 mars 2008Uab Research FoundationMethod and apparatus for the monitoring and treatment of spontaneous cardiac arrhythmiasUS735440416 mars 20048 avr. 2008Cardiac Pacemakers, Inc.Cardiac rhythm template generation system and methodUS73732035 avr. 200413 mai 2008Cardiac Pacemakers, Inc.Cardiac rhythm management system with prevention of double counting of eventsUS74264111 avr. 200516 sept. 2008Cardiac Pacemakers, Inc.Method and system for characterizing supraventricular rhythm during cardiac pacingUS743044620 janv. 200530 sept. 2008Cardiac Pacemakers, Inc.Methods and apparatuses for cardiac arrhythmia classification using morphology stabilityUS74441822 mai 200528 oct. 2008Cameron Health, Inc.Method for discriminating between ventricular and supraventricular arrhythmiasUS745766625 mai 200525 nov. 2008Cardiac Pacemakers, Inc.Retrograde atrial sensing for identifying sub-threshold atrial pacingUS746392421 janv. 20059 d�c. 2008Cameron Health, Inc.Methods for determining placement of an implantable cardiac stimulus deviceUS747491629 d�c. 20056 janv. 2009Medtronic, Inc.Method and apparatus for discriminating ventricular and supraventricular tachyarrhythmiasUS747793228 mai 200313 janv. 2009Cardiac Pacemakers, Inc.Cardiac waveform template creation, maintenance and useUS74779422 ao�t 200413 janv. 2009Cardiac Pacemakers, Inc.ATP therapy for tachyarrhythmias in VF zoneUS750095527 juin 200310 mars 2009Cardiac Pacemaker, Inc.Signal compression based on curvature parametersUS751595612 mai 20047 avr. 2009Cardiac Pacemakers, Inc.Template based AV/VA interval comparison for the discrimination of cardiac arrhythmiasUS75229567 mars 200521 avr. 2009Cardiac Pacemakers, Inc.Apparatus and method for treating ventricular tachyarrhythmiasUS752295813 mars 200321 avr. 2009Uab Research FoundationMethods and systems for reducing discomfort from cardiac defibrillation shocksUS752958127 f�vr. 20075 mai 2009Cardiac Pacemakers, Inc.Method and system for characterizing a representative cardiac beat using multiple templatesUS753293118 d�c. 200112 mai 2009Cardiac Pacemakers, Inc.System and method for detection enhancement programmingUS75362229 nov. 200419 mai 2009Cameron Health, Inc.Nonvascular implantable defibrillator and methodUS753953621 mars 200626 mai 2009Cardiac Pacemakers, Inc.Cardiac rhythm management systems and methods using multiple morphology templates for discriminating between rhythmsUS754615914 mars 20059 juin 2009Pacesetter, Inc.Subcutaneous cardiac stimulation device, system, and method providing accelerated arrhythmia detection verification and transient rate compensationUS757426028 avr. 200511 ao�t 2009Cardiac Pacemakers, Inc.Adaptive windowing for cardiac waveform discriminationUS758074411 mars 200525 ao�t 2009Cardiac Pacemakers, Inc.Classification of supraventricular and ventricular cardiac rhythms using cross channel timing algorithmUS758206122 d�c. 20051 sept. 2009Cardiac Pacemakers, Inc.Method and apparatus for morphology-based arrhythmia classification using cardiac and other physiological signalsUS758724015 d�c. 20048 sept. 2009Cardiac Pacemakers, Inc.Atrial capture verificationUS76100847 juin 200627 oct. 2009Cardiac Pacemakers, Inc.System and method for classifying cardiac depolarization complexes with multi-dimensional correlationUS765343028 nov. 200526 janv. 2010Cardiac Pacemakers, Inc.Method and system for verifying the integrity of normal sinus rhythm templatesUS765343120 d�c. 200526 janv. 2010Cardiac Pacemakers, Inc.Arrhythmia discrimination based on determination of rate dependencyUS766454910 mai 200516 f�vr. 2010Cardiac Pacemakers, Inc.Cardiac rhythm management system with arrhythmia classification and electrode selectionUS772518430 mai 200725 mai 2010Cardiac Pacemakers, Inc.Cardiac tachyarrhythmia therapy selection based on patient response informationUS77297623 nov. 20051 juin 2010Cardiac Pacemakers, Inc.Adaptive anti-tachycardia therapy apparatus and methodUS77343442 d�c. 20038 juin 2010Uab Research FoundationMethods, systems and computer program products to inhibit ventricular fibrillation during cardiopulmonary resuscitationUS773434715 d�c. 20048 juin 2010Cardiac Pacemakers, Inc.Cardiac pacing response classification based on waveform feature variabilityUS773895021 d�c. 200615 juin 2010Cardiac Pacemakers, Inc.Method and apparatus for identifying potentially misclassified arrhythmic episodesUS77389573 nov. 200515 juin 2010Cardiac Pacemakers, Inc.Tachyarrhythmia therapy device with ranked therapy selectionUS777406412 d�c. 200310 ao�t 2010Cardiac Pacemakers, Inc.Cardiac response classification using retriggerable classification windowsUS779257127 juin 20037 sept. 2010Cardiac Pacemakers, Inc.Tachyarrhythmia detection and discrimination based on curvature parametersUS780161017 nov. 200621 sept. 2010Cardiac Pacemakers, Inc.Methods and systems for management of atrial retrograde conduction and pacemaker mediated tachyarrhythmiaUS78094406 f�vr. 20035 oct. 2010Medtronic, Inc.Methods and apparatus for detecting ventricular depolarizations during atrial pacingUS781805624 mars 200519 oct. 2010Cardiac Pacemakers, Inc.Blending cardiac rhythm detection processesUS78268934 juin 20072 nov. 2010Medtronic, Inc.Method and apparatus for generating a template for arrhythmia detection and electrogram morphology classificationUS789489330 sept. 200422 f�vr. 2011Cardiac Pacemakers, Inc.Arrhythmia classification and therapy selectionUS790800123 ao�t 200515 mars 2011Cardiac Pacemakers, Inc.Automatic multi-level therapy based on morphologic organization of an arrhythmiaUS790800615 d�c. 200415 mars 2011Cardiac Pacemakers, Inc.Cardiac pacing response classification using an adaptable classification intervalUS79125456 ao�t 200922 mars 2011Cardiac Pacemakers, Inc.Method and apparatus for morphology-based arrhythmia classification using cardiac and other physiological signalsUS793002915 d�c. 200419 avr. 2011Cardiac Pacemakers, Inc.Template initialization for evoked response detectionUS793365123 nov. 200426 avr. 2011Cardiac Pacemakers, Inc.Cardiac template generation based on patient response informationUS795347616 f�vr. 200631 mai 2011Cardiac Pacemakers, Inc.Discrimination of supraventricular tachycardia and ventricular tachycardia eventsUS795780313 ao�t 20097 juin 2011Cardiac Pacemakers, Inc.Atrial capture verificationUS796220910 sept. 200814 juin 2011Cardiac Pacemakers, Inc.Method and system for characterizing supraventricular rhythm during cardiac pacingUS796221019 mai 200914 juin 2011Cardiac Pacemakers, Inc.Implantable medical device with voice responding and recording capacityUS799145711 oct. 20102 ao�t 2011Cardiac Pacemakers, Inc.Discrimination of supraventricular tachycardia and ventricular tachycardia eventsUS801940811 janv. 201013 sept. 2011Cardiac Pacemakers, Inc.System for verifying the integrity of cardiac complex templatesUS80460674 oct. 201025 oct. 2011Medtronic, Inc.Methods and apparatus for detecting ventricular depolarizations during atrial pacingUS804606820 avr. 200925 oct. 2011Cardiac Pacemakers, Inc.Apparatus and method for treating ventricular tachyarrhythmiasUS805075724 ao�t 20091 nov. 2011Cardiac Pacemakers, Inc.Classification of supraventricular and ventricular cardiac rhythms using cross channel timing algorithmUS805534421 avr. 20068 nov. 2011Cardiac Pacemakers, Inc.System and method for detection enhancement programmingUS809043410 f�vr. 20093 janv. 2012Biotronik Crm Patent AgDevice, method and computer-readable storage medium for enhanced sense event classification in implantable devices by means of morphology analysisUS81168674 ao�t 200514 f�vr. 2012Cameron Health, Inc.Methods and devices for tachyarrhythmia sensing and high-pass filter bypassUS81216745 mai 200921 f�vr. 2012Cardiac Pacemakers, Inc.Method and system for characterizing a representative cardiac beat using multiple templatesUS814015330 avr. 201020 mars 2012Cardiac Pacemakers Inc.Cardiac tachyarrhythmia therapy selection based on patient response informationUS814529610 ao�t 200927 mars 2012Cardiac Pacemakers, Inc.Adaptive windowing for cardiac waveform discriminationUS814530130 sept. 201027 mars 2012Cardiac Pacemakers, Inc.Blending cardiac rhythm detection processesUS81453107 juil. 200827 mars 2012Cardiac Pacemakers, Inc.Non-captured intrinsic discrimination in cardiac pacing response classificationUS815574121 nov. 200810 avr. 2012Cardiac Pacemakers, Inc.Retrograde atrial sensing for identifying sub-threshold atrial pacingUS81606877 mai 200917 avr. 2012Cameron Health, Inc.Methods and devices for accurately classifying cardiac activityUS816069725 janv. 200517 avr. 2012Cameron Health, Inc.Method for adapting charge initiation for an implantable cardioverter-defibrillatorUS818519518 f�vr. 201022 mai 2012Cardiac Pacemakers, Inc.Arrhythmia classification and therapy selectionUS818520222 mai 200822 mai 2012Cardiac Pacemakers, Inc.Implantable cardiac device for reduced phrenic nerve stimulationUS820460623 juin 200819 juin 2012Cardiac Pacemakers, Inc.Implantable lead for septal placement of pacing electrodesUS820901314 sept. 200626 juin 2012Cardiac Pacemakers, Inc.Therapeutic electrical stimulation that avoids undesirable activationUS82140277 avr. 20083 juil. 2012Cardiac Pacemakers, Inc.Cardiac rhythm template generation system and methodUS82295521 ao�t 201124 juil. 2012Cardiac Pacemakers, Inc.Discrimination of supraventricular tachycardia and ventricular tachycardia eventsUS822956115 d�c. 200424 juil. 2012Cardiac Pacemakers, Inc.Atrial retrograde managementUS823902220 janv. 20097 ao�t 2012Pacesetter, Inc.Methods and systems for discriminating between ventricular waveforms when ventricular rate exceeds atrial rateUS82443488 sept. 200814 ao�t 2012Cardiac Pacemakers, Inc.Method and apparatus for cardiac arrhythmia classification using template band-based morphology analysisUS826042122 mai 20084 sept. 2012Cardiac Pacemakers, Inc.Method for reducing phrenic nerve stimulationUS82657367 ao�t 200711 sept. 2012Cardiac Pacemakers, Inc.Method and apparatus to perform electrode combination selectionUS828050824 f�vr. 20092 oct. 2012Cardiac Pacemakers, Inc.Signal compression based on curvature parametersUS829059017 nov. 200616 oct. 2012Cardiac Pacemakers, Inc.Dynamic morphology based atrial automatic thresholdUS830661927 sept. 20116 nov. 2012Cardiac Pacemakers, Inc.Apparatus and method for treating ventricular tachyarrhythmiasUS831569731 oct. 201120 nov. 2012Cardiac Pacemakers, Inc.Classification of supraventricular and ventricular cardiac rhythms using cross channel timing algorithmUS833202225 sept. 200611 d�c. 2012Medtronic, Inc.Methods and apparatus for discriminating polymorphic tachyarrhythmias from monomorphic tachyarrhythmias facilitating detection of fibrillationUS839654120 oct. 200812 mars 2013Siemens Medical Solutions Usa, Inc.Signal analysis of cardiac and other patient medical signalsUS2009011210620 oct. 200830 avr. 2009Siemens Medical Solutions Usa, Inc.Signal Analysis of Cardiac and Other Patient Medical SignalsEP0801960A215 avr. 199722 oct. 1997Medtronic, Inc.Apparatus for identifying cardiac arrhythmiasEP0813889A218 juin 199729 d�c. 1997Medtronic, Inc.System for multisite cardiac stimulus steeringEP1169973A16 juil. 20019 janv. 2002Biosense, Inc.Bipolar mapping of intracardiac potentialsEP1169975A16 juil. 20019 janv. 2002Biosense Webster, Inc.Catheter with tip electrode having a recessed ring electrode mounted thereonEP1197243A214 ao�t 200117 avr. 2002Pacesetter, Inc.Arrhythmia forecasting based on morphology changes in intercardiac electrogramsEP1233814A117 nov. 200028 ao�t 2002Intermedics, Inc.Dual-chambered pacemaker and defibrillatorEP1279414A223 juil. 200229 janv. 2003BIOTRONIK Mess- und Therapieger�te GmbH &amp; Co Ingenieurb�ro BerlinCardiac therapy apparatusEP1504788A114 ao�t 20019 f�vr. 2005Pacesetter, Inc.Arrhythmia forecasting based on morphology changes in intercardiac electrogramsWO1996025095A114 f�vr. 199622 ao�t 1996Ep Technologies, Inc.Systems and methods for making time-sequential measurements of biological eventsWO1997039681A118 avr. 199730 oct. 1997Dicarlo, Lorenzo, A.Defibrillator control systemWO1998047564A123 avr. 199829 oct. 1998Ep Technologies, Inc.Multi-site defibrillation system using multiple electrode structuresWO1999038568A126 janv. 19995 ao�t 1999University Of Alabama At Birmingham Research FoundationMethod and apparatus for the monitoring and treatment of spontaneous cardiac arrhythmiasWO2000047275A111 f�vr. 200017 ao�t 2000Cardiac Pacemakers, Inc.System and method for arrhythmia discriminationWO2000064534A126 avr. 20002 nov. 2000Cardiac Pacemakers, Inc.Method and apparatus for detecting changes in electrocardiogram signalsWO2001036046A117 nov. 200025 mai 2001Intermedics, Inc.Dual-chambered pacemaker and defibrillatorWO2002002007A18 f�vr. 200110 janv. 2002Cardiac Science, Inc.A cardiac arrhythmia detector using ecg waveform-factor and its irregularityWO2002040096A15 d�c. 200023 mai 2002Medtronic, Inc.Method and apparatus for monitoring heart rate and abnormal respirationWO2004050182A23 d�c. 200317 juin 2004Medtronic, Inc.Systems and methods for discriminating polymorphic from monomorphic tachyarrhythmiasWO2004050184A23 d�c. 200317 juin 2004Medtronic, Inc.Systems and methods for discriminating polymorphic from monomorphic tachyarrhythmiasWO2004050185A23 d�c. 200317 juin 2004Medtronic, Inc.Methods and apparatus for discriminating polymorphic from monomorphic tachyarrhythmiasWO2004067089A128 janv. 200412 ao�t 2004Bodner, Jeffrey, P.Tachy lead system for septal placementWO2005105204A18 avr. 200510 nov. 2005Cao, JianAutomated template generation algorithm for implantable deviceFaire pivoterImage d'origineAccueil Google - Plan du site - T�l�chargements par lot sur l'USPTO - R�gles de confidentialit� - Conditions d'utilisation - � propos de Google�Brevets - Envoyer des commentairesDonn�es fournies par IFI CLAIMS Patent Services©2012 Google