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1. 发明专利

DE69720058D1 未知
公开(公告)号：DE69720058D1
公开(公告)日：2003-04-24
申请号：DE69720058
申请日：1997-12-16
申请人： MEDTRONIC INC
发明人： PETERSON K , JIRAK L , ZHOU REN , HILL R
IPC分类号： A61N1/362 , A61N1/368

2. 发明专利

DE69925493T2 未知
公开(公告)号：DE69925493T2
公开(公告)日：2006-01-26
申请号：DE69925493
申请日：1999-08-13
申请人： MEDTRONIC INC
发明人： MEHRA RAHUL , HILL R , FITTS M , MONGEON R
IPC分类号： A61N1/362 , A61N1/37
摘要： A cardiac pacemaker and a method of its use. The pacemaker paces a patient's heart in a tachyarrhythmia prevention pacing mode for an extended time period, defines a metric of success of the tachyarrhythmia prevention pacing mode, monitors the metric over the extended time period and, responsive to the monitored metric, adjusts the tachyarrhythmia prevention pacing mode. Adjustment of the tachyarrhythmia prevention pacing mode may take the form of pacing the patient's heart with a different set of electrodes, pacing the patient's heart with a different tachyarrhythmia prevention pacing mode and/or terminating operation of the tachyarrhythmia prevention pacing mode.

3. 发明专利

DE60022754D1 未知
公开(公告)号：DE60022754D1
公开(公告)日：2005-10-27
申请号：DE60022754
申请日：2000-06-16
申请人： MEDTRONIC INC
发明人： HILL R , HESS F
IPC分类号： A61N1/362
摘要： A medical device selects the most appropriate among various calculated escape intervals for use in the next cardiac cycle. This is particularly implemented in cardiac event in which a pacemaker is used to prevent multiple tachyarrhythmias. The prevention pacing modes may be simultaneously active, with the escape interval for each mode calculated and updated on a beat-by-beat basis. The medical device selects tachyarrhythmia prevention pacing modality to control the escape interval of the current cardiac cycle in order that a more appropriate method for calculating the escape interval based on the present condition of the patient, may be selected.

4. 发明专利

DE69925266T2 未知
公开(公告)号：DE69925266T2
公开(公告)日：2005-10-06
申请号：DE69925266
申请日：1999-03-03
申请人： MEDTRONIC INC
发明人： WARMAN N , HILL R , PETERSON K , MEHRA RAHUL , MONGEON R
IPC分类号： A61N1/362 , A61N1/39
摘要： An implantable anti-tachyarrhythmia device which delivers atrial cardioversion or defibrillation pulses heart in response to detection of atrial tachyarrhythmias. The pulses are synchronized to atrial and ventricular events in such a fashion as to assure they occur outside of the vulnerable periods associated with both chambers. The device is provided with a pulse synchronizer which defines a first synchronization interval initiated following a sensed atrial event and a second synchronization interval initiated responsive to a sensed ventricular event and a pulse triggerer which triggers delivery of a cardioversion or defibrillation pulse responsive to the first and second synchronization intervals simultaneously being underway. In particular, the pulse triggerer may be responsive to initiation of the first synchronization interval during the second synchronization interval. In addition, the synchronizer may also define minimum time intervals following ventricular events and the triggerer may additionally be responsive to expiration of a defined minimum time interval following a ventricular event preceding the sensed ventricular event which initiated the second synchronization interval currently underway.

5. 发明专利

DE69824170T2 未知
公开(公告)号：DE69824170T2
公开(公告)日：2005-06-23
申请号：DE69824170
申请日：1998-02-09
申请人： MEDTRONIC INC
发明人： HILL R
IPC分类号： A61N1/05 , A61N1/362 , A61N1/39
摘要： A cardiac pacemaker with a rate stabilization pacing mode. The pacemaker varies the increment following a cycle ending in a sensed depolarization as a function of the underlying heart rate and may additionally vary the increment as a function of the prematurity of the most recently sensed depolarization relative to the preceding depolarization. A greater increment is generally provided if the underlying cycle length is greater, while the increment may be lessened following relatively more premature depolarizations. Prematurity may be determined by comparing the cycle (CLnew) ending in the most recently sensed depolarization with the previous cycle length (CLold), for example by calculating CLnew/CLold or CLold-CLnew. The mechanism for determining the duration of the increment provides for a more rapid return to a lower underlying heart rate, while still avoiding the short-long interval pattern sometimes associated with the onset of tachycardia.

6. 发明专利

DE69726195T2 未知
公开(公告)号：DE69726195T2
公开(公告)日：2004-08-19
申请号：DE69726195
申请日：1997-12-10
申请人： MEDTRONIC INC
发明人： PETERSON K , HILL R , ZHOU REN , PRIEVE A
IPC分类号： A61N1/362 , A61N1/39 , A61N1/368
摘要： An implantable pacemaker employing an arrhythmia prevention pacing modality particularly optimized for inclusion in dual chamber pacemakers and anti-arrhythmia devices which include dual chamber pacemakers. When the pacing mode is in effect, the device alters timing of scheduled atrial and/or ventricular pacing pulses in response to depolarizations sensed during the refractory periods and to ventricular depolarizations sensed outside of the pacemaker's A-V escape intervals. The arrhythmia prevention pacing mode is activated and deactivated in conjunction with the operation of arrhythmia detection features which may also be employed by the device to trigger delivery of anti-arrhythmia therapies.

7. 发明专利

DE69824170D1 未知
公开(公告)号：DE69824170D1
公开(公告)日：2004-07-01
申请号：DE69824170
申请日：1998-02-09
申请人： MEDTRONIC INC
发明人： HILL R
IPC分类号： A61N1/05 , A61N1/362 , A61N1/39
摘要： A cardiac pacemaker with a rate stabilization pacing mode. The pacemaker varies the increment following a cycle ending in a sensed depolarization as a function of the underlying heart rate and may additionally vary the increment as a function of the prematurity of the most recently sensed depolarization relative to the preceding depolarization. A greater increment is generally provided if the underlying cycle length is greater, while the increment may be lessened following relatively more premature depolarizations. Prematurity may be determined by comparing the cycle (CLnew) ending in the most recently sensed depolarization with the previous cycle length (CLold), for example by calculating CLnew/CLold or CLold-CLnew. The mechanism for determining the duration of the increment provides for a more rapid return to a lower underlying heart rate, while still avoiding the short-long interval pattern sometimes associated with the onset of tachycardia.

8. 发明专利

DE69925266D1 未知
公开(公告)号：DE69925266D1
公开(公告)日：2005-06-16
申请号：DE69925266
申请日：1999-03-03
申请人： MEDTRONIC INC
发明人： WARMAN N , HILL R , PETERSON K , MEHRA RAHUL , MONGEON R
IPC分类号： A61N1/362 , A61N1/39
摘要： An implantable anti-tachyarrhythmia device which delivers atrial cardioversion or defibrillation pulses heart in response to detection of atrial tachyarrhythmias. The pulses are synchronized to atrial and ventricular events in such a fashion as to assure they occur outside of the vulnerable periods associated with both chambers. The device is provided with a pulse synchronizer which defines a first synchronization interval initiated following a sensed atrial event and a second synchronization interval initiated responsive to a sensed ventricular event and a pulse triggerer which triggers delivery of a cardioversion or defibrillation pulse responsive to the first and second synchronization intervals simultaneously being underway. In particular, the pulse triggerer may be responsive to initiation of the first synchronization interval during the second synchronization interval. In addition, the synchronizer may also define minimum time intervals following ventricular events and the triggerer may additionally be responsive to expiration of a defined minimum time interval following a ventricular event preceding the sensed ventricular event which initiated the second synchronization interval currently underway.

9. 发明专利

DE69724952T2 未知
公开(公告)号：DE69724952T2
公开(公告)日：2004-07-15
申请号：DE69724952
申请日：1997-05-05
申请人： MEDTRONIC INC
发明人： MEADOR T , HESS F , HILL R , MEAD HARDWIN
IPC分类号： A61N1/368 , A61N1/362

10. 发明专利

DE60030555D1 未知
公开(公告)号：DE60030555D1
公开(公告)日：2006-10-19
申请号：DE60030555
申请日：2000-02-02
申请人： MEDTRONIC INC
发明人： HILL R , MEHRA RAHUL , HESS F , PITSCHNEIDER RAYLENE
IPC分类号： A61N1/37 , A61N1/08
摘要： A method and apparatus for determining the occurrence of a mis-location of an atrial electrode in a cardiac stimulation device having an atrial pulse generator coupled with the atrial electrode and a ventricular sense amplifier coupled to a ventricular electrode. The device paces the atrium in a first pacing mode employing atrial pacing pulses at a first energy level and in a test mode employs higher energy atrial pacing pulses. In the test mode the device measures PR intervals between atrial pacing pulses following sensed ventricular depolarizations and determines that the atrial electrode is mis-located responsive to occurrence of a threshold number of short PR intervals or that the atrial electrode is appropriately located responsive to occurrence of a threshold number of long PR intervals. Operation of the device in the test mode may be pre-conditioned on an absence of atrial tachyarrhythmia.

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