Programmable pacer and method of external programming
First Claim
1. A pacemaker having a stimulus generator for delivering stimulus signals at a given rate, the rate of said stimulus signals being programmable, having means for receiving external program signals comprising on-off type signals and means for varying said rate as a function of said received program signals, characterized by said varying means comprisingmeans for counting first and second sequenced series of said program signals;
- decade control means for controlling said rate so that the decade component of said rate corresponds to a first count of said counting means; and
unit control means for controlling said rate so that the unit component of said rate corresponds to the other count of said counting means.
3 Assignments
0 Petitions
Accused Products
Abstract
A pacing system and method of programming the rate of said system is disclosed, wherein the pacemaker comprises circuitry for receiving a first group of simple on-off magnetic pulses which are accumulated and translated into the decades portion of the desired heartbeat rate (in bpm), and also for receiving a second group of pulses which are translated into the units count of the desired pacing rate in bpm. The circuitry provides that an initial portion of the programming signal is inspected relative to predetermined criteria, so that such initial portion acts also as an enabling key for accepting the overall programming signal. The doctor simply applies a simple hand held magnet t times according to the desired tens component of the programmed rate in bpm, maintains the magnet applied for at least a predetermined number of pacer intervals, and then applies the magnet u times corresponding to the units component of the desired heart rate, thereby programming the pacer to operate at tu bpm.
7 Citations
18 Claims
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1. A pacemaker having a stimulus generator for delivering stimulus signals at a given rate, the rate of said stimulus signals being programmable, having means for receiving external program signals comprising on-off type signals and means for varying said rate as a function of said received program signals, characterized by said varying means comprising
means for counting first and second sequenced series of said program signals; -
decade control means for controlling said rate so that the decade component of said rate corresponds to a first count of said counting means; and unit control means for controlling said rate so that the unit component of said rate corresponds to the other count of said counting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16)
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15. A programmable cardiac pacemaker for generation of output signals suitable for delivery to a patient'"'"'s heart, having receiving means for receiving externally generated program signals and signal generating circuitry for generating said output signals, said signal generating circuitry continuously providing timing signals representative of the timing of said circuitry, characterized by:
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program means for generating control signals as a function of the time relationship of said received program signals and said timing signals, means controlled by said control signals for distinguishing first and second sequenced groups of said program signals having a predetermined time relationship and obtaining first and second counts of same; and means for controlling the rate of generating said output signals so that the decades component of said rate in bpm corresponds to one of said counts and the unit component of said rate corresponds to the other of said counts.
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17. A method for programming a cardiac pacing system, said system being adapted for generating of pacing signals suitable for delivery to a patient'"'"'s heart, and having receiving means for receiving externally generated program signals and signal generating circuitry for generating said output signals at a rate corresponding to said received program signals, comprising:
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a. applying a first series of magnetic pulses in the vicinity of said pacemaker; b. detecting said first series of pulses and obtaining a count of said first series; c. applying a magnetic signal of predetermined form and enabling thereby storage of said first count; d. controlling the rate of said pacing signals in response to said enabling so that the decade component of said pacing signal rate in bpm corresponds to said first count; and e. if the unit component of said rate is not zero, applying a second group of magnetic signals, detecting and counting said second group of signals, enabling acceptance of said second group of signals by applying a magnetic signal of predetermined form, and further controlling the rate of said pacing signals so that the unit component of said rate in bpm corresponds to said second count. - View Dependent Claims (18)
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Specification