Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1991-01-31
1993-08-03
Howell, Kyle L.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607123, A61N 1368
Patent
active
052319857
ABSTRACT:
A cardiac pacemaker and related pacing method. The cardiac pacemaker includes atrial and ventricular sense amplifiers for generating atrial and ventricular sense signals. An activity control circuit measures the activity level and initiates an activity interval. A control circuit responds to the atrial sense signals, the ventricular sense signals, and the activity control circuit, for controlling the atrial and ventricular stimuli generation, by matching the activity interval with the depolarization of the atrial tissue, in order to differentiate true exercise induced sinus tachycardia from atrial arrhythmias and retrograde atrial events, and to permit a selective ventricular rate control. The control circuit initiates a 2 to 1 ventricular to atrial response when the activity interval is greater than a VV interval, which is the sum of the interval between the last sensed or paced ventricular event and the atrial intrinsic depolarization (VA.sub.S interval) and the programmed AV delay or the sensed AV interval. The 2 to 1 block mode is induced by prolonging the post ventricular atrial refractory period (PVARP) for the next beat.
REFERENCES:
patent: 4429697 (1984-02-01), Nappholz et al.
patent: 4467810 (1984-08-01), Vollmann
patent: 4554921 (1985-11-01), Boute et al.
patent: 4712555 (1987-12-01), Thornander et al.
patent: 4712556 (1987-12-01), Baker, Jr.
patent: 4722341 (1988-02-01), Hedberg et al.
patent: 4856523 (1989-08-01), Sholder et al.
patent: 4945909 (1990-08-01), Fearnot et al.
patent: 5007422 (1991-04-01), Pless et al.
patent: 5085215 (1992-02-01), Nappholz et al.
patent: 5086774 (1992-02-01), Duncan
Rate-Responsive Dual-Chamber Pacing by Kappenberger et al., published in New Perspectives in Cardiac Pacing, edited by S. Serge Barold, MD et al., Futura Publishing Co., 1988.
Rate Responsive Dual Chamber Pacing, by Kappenberger et al., published in PACE, vol. 9, Nov.-Dec. 1986, Part II.
Bourgeois Ivan
Dulk Karl D.
Herpers Loek
Sutton Richard
Howell Kyle L.
Kassatly S. A.
Medtronic Inc.
Patton Harold R.
Schaetzle Kennedy J.
LandOfFree
Dual chamber rate responsive pacer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual chamber rate responsive pacer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual chamber rate responsive pacer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2263747