Surgery – Truss – Pad
Patent
1980-08-11
1983-12-20
Kamm, William E.
Surgery
Truss
Pad
A61N 136
Patent
active
044211147
ABSTRACT:
Treatment of re-entry tachycardias through the use of a pacemaker which includes sequentially timed oscillators for delivering stimulating pulses to an atrium and ventricle, preferably on a demand basis, and a circuit for detecting a tachycardia condition and switching to an asynchronous mode of operation. The detector does not respond to a single extraneous or premature beat, but after a predetermined number of beats occurring above a predetermined normal beat rate the detector switches the pacemaker to an asynchronous mode. Relative variation in the phase of the asynchronous pacing and the tachycardia beats results within a short time in occurrence of a pulse in the critical time period to stop the tachycardia. The use of sequential stimulation in both chambers overcomes some of the problems in selecting the proper site for stimulation. Hysteresis is provided in the heartbeat rate detecting circuit for preventing premature discontinuance of the asynchronous mode due to masking of pulses by the refractory period of the QRS-wave amplifying circuits.
REFERENCES:
patent: 3552386 (1971-01-01), Horth
patent: 3587563 (1971-06-01), Ragsdole
patent: 3661158 (1972-05-01), Berkovits
patent: 4181133 (1980-01-01), Kolenik et al.
Berkovits Barouh V.
McDonald Ray S.
LandOfFree
Tachycardia treatment does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tachycardia treatment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tachycardia treatment will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-102818