Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1997-08-01
2000-06-13
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 5, A61N 1362, A61N 139
Patent
active
060760141
ABSTRACT:
A medical interventional device is structured for implantation in a human patient, to respond to detection of cardiac activity of the patient indicative of cardiac dysrhythmias. The device includes a cardiac therapy system responsive to a detected arrhythmia in either the atrial or ventricular chambers for automatic therapeutic treatment by selective application of an appropriate therapy regimen consisting of pacing, cardioverting or defibrillating waveforms of predetermined type and energy content to the chamber diagnosed as that in which the dysrhythmia originated. The device incorporates a DDD or DDD-R pacemaker for dual chamber sensing of electrical (ECG) activity, and for constant pacing of the atrium and atrioventricular synchronization. A fuzzy logic subsystem is used for diagnosis including identification of the originating heart chamber. The electrode system for delivering the selected therapy regimen includes a single lead for pacing, sensing, cardioversion and defibrillation associated with each of the right atrial and ventricular chambers. A counter-electrode for defibrillation may be the metal case in which the device electronics are housed, or a cardiac electrode implanted in the left pulmonary artery or the distal coronary sinus.
REFERENCES:
patent: 5433729 (1995-07-01), Adams et al.
patent: 5472453 (1995-12-01), Alt
patent: 5690686 (1997-11-01), Min et al.
Kamm William E.
Layno Carl H.
Sulzer Intermedics Inc.
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