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Ideker Raymond E, Fine Michael J, Baker Ross G Jr, Calfee Richard V: Implantable defribrillation electrodes.. Intermedics, August 31, 1988: EP0280564-A2 (120 worldwide citation)

A pair of defibrillation patch electrodes (12,15) is adapted for close fitting placement over the ventricles of the heart, either epicardially or pericardially. One of the patches is contoured to fit over the right ventricle, and the other is contoured to fit over the left ventricle in spaced relati ...


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Haluska Edward A, Whistler Stephen J, Baker Ross G Jr, Calfer Richard V: Cardiac stimulator.. Intermedics, January 20, 1988: EP0253505-A2 (54 worldwide citation)

A cardiac stimulator is provided for detecting and treating ventricular tachyarrhythmias of a patient's heart. The stimulator includes means for selectively dividing the heart rate continuum into regions including at least two classes of tachycardia (TACH-1, TACH-2, TACH-3), contiguous to each other ...


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Baker Ross G Jr, Whistler Stephen J, Calfee Richard V, Ideker Raymond E, Haluska Edward A: Biphasic waveforms for defibrillation.. Intermedics, August 31, 1988: EP0280526-A2 (31 worldwide citation)

An implantable defibrillator is described comprising means for detecting fibrillation, electrical generating means responsive to the detection of fibrillation for producing a biphasic waveform (33-35, 42-46) in which each phase is characterised by an impulse of predetermined polarty, magnitude and d ...


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Baker Ross G Jr, Bradshaw James I: Active fixation mechanism for a cardiac stimulating electrode.. Intermedics, October 24, 1990: EP0393265-A1 (21 worldwide citation)

An active fixation mechanism (15) for a stimulating electrode (12) of an endocardial lead (10) comprises a rigid hook (36) pivotally coupled to the electrode (12) and adapted to engage cardiac tissue in the vicinity of the electrode. A spring (39) biases the hook (36) in an initial position within t ...


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Baker Ross G Jr: Microprocessor controlled cardiac pacemaker with ventricular rate limit.. Intermedics, June 13, 1984: EP0110612-A1 (14 worldwide citation)

A microprocessor-controlled pacemaker is programmed to extend an atrial refractory interval in response to the detection of events which could initiate a pacer sustained tachycardia. The extended atrial refractory interval ensures that a spurious atrial event resulting from retrograde conduction of ...


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Baker Ross G Jr, Haluska Edward A, Calfee Richard V, Whistler Stephen J: Implantable cardiac stimulator with automatic gain control and bandpass filtering in feedback loop.. Intermedics, January 10, 1990: EP0350160-A1 (11 worldwide citation)

An implantable cardiac stimulator for detecting and treating cardiac arrhythmias includes a sense amplifier (25) responsive to sensed cardiac signals for detecting and distinguishing normal and abnormal cardiac activity within the sensed signals. The sense amplifier includes an automatic gain contro ...


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Adkins Robert A, Baker Ross G Jr: Implantable device with circadian rhythm adjustment.. Intermedics, October 17, 1990: EP0392800-A1 (9 worldwide citation)

A body function assistance device, capable of analyzing changing but cyclic physiologic needs of a patient and generating a response based on the analysis. A microprocessor (32) in the body function assistance device controls the response of the device to various external events and internal timer e ...


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Baker Ross G Jr: A heart pacemaker.. Intermedics, October 14, 1987: EP0241102-A2 (8 worldwide citation)

A heart pacemaker comprising means (3,5) for sensing electrical events in the atrium and ventricle of a heart; means (11, 13) for pacing the ventricle in response to sensed atrial events; and means for selecting a value of a ventricular rate limit which defines the maximum rate at which the ventricl ...