Variable length scanning burst tachycardia control pacer
First Claim
1. A tachycardia control pacer comprising means for confirming tachycardia, means responsive to each operation of said confirming means for generating a burst of heart stimulating pulses at a constant rate, and means for controlling scanning of heart stimulating pulse bursts with respect to both their numbers of pulses and their rates.
5 Assignments
0 Petitions
Accused Products
Abstract
There is disclosed an improved pacer for controlling tachycardia. Following each tachycardia confirmation, a burst of stimulating pulses is generated. The rates of the bursts increase from cycle to cycle; thus following each tachycardia confirmation, a pulse burst at a different rate is generated. The number of pulses in a burst is similarly scanned, a complete rate scan taking place for each pulse number in a scan. The rate of a burst and the number of pulses in it which are successful in terminating tachycardia are stored, and following the next tachycardia confirmation the stored rate and pulse number are used for the first burst which is generated. In this manner, there is a greater likelihood that tachycardia will be terminated following the first burst since a previously successful rate and pulse number are used. Only if success is not achieved does scanning of the burst rate and pulse number ensue, starting with the previously successful rate and pulse number.
-
Citations
70 Claims
- 1. A tachycardia control pacer comprising means for confirming tachycardia, means responsive to each operation of said confirming means for generating a burst of heart stimulating pulses at a constant rate, and means for controlling scanning of heart stimulating pulse bursts with respect to both their numbers of pulses and their rates.
- 53. A tachycardia control pacer comprising means for confirming tachycardia, means responsive to said confirming means for generating a burst of heart-stimulating pulses at a constant rate which potentially allows tachycardia to be terminated, means for scanning the number of pulses in a burst during sequential cycles of operation of said pulse burst generating means, means for detecting tachycardia termination, said pulse burst generating means ceasing to operate following tachycardia termination, and means for registering the last-used number of pulses which was successful in terminating tachycardia for first use in the next burst which follows tachycardia confirmation.
Specification