Surgery – Truss – Pad
Patent
1982-08-05
1986-01-07
Kamm, William E.
Surgery
Truss
Pad
A61N 136
Patent
active
045628416
ABSTRACT:
A programmable cardiac pacemaker that is selectively programmable via a radio frequency communications link into one of a plurality of a single and dual chamber pacing modes. Depending upon the mode selected, an associated plurality of pacing parameters may be programmed, each within a predetermined range of possible magnitudes.
The pacemaker includes a rate smoothing function for preventing the rate interval from changing by more than a predetermined percentage on a cycle-to-cycle basis; and a graceful degradation function for causing the ventricular pacing rate to decay when the atrial rate exceeds a programmed upper rate limit for a predetermined length of time. A graceful degration onset time and rate of decay are also programmable. Additionally, the pacemaker contains a set of pre-programmed alternative pacing parameters for at least one mode and which can be independently reverted to.
The pacemaker control circuitry is organized about a central bus into an I/O controller and a pacing controller. Pacing control is continuous and its I/O communications operate on a prioritized basis. I/O control permits the programming of any register and the interrogation of a variety of analog parameters associated therewith.
REFERENCES:
patent: 3662759 (1972-05-01), Dabolt
patent: 3693626 (1972-09-01), Cole
patent: 3718909 (1973-02-01), Greatbatch
patent: 4052991 (1977-10-01), Zacouto
patent: 4290429 (1981-09-01), Blaser
patent: 4305397 (1981-12-01), Weisbrod et al.
Brockway Brian P.
Dreher Robert D.
Huntwork Daniel E.
Lindstedt Brock S.
Mills Perry A.
Cardiac Pacemakers Inc.
Haugen Orrin M.
Kamm William E.
Nikolai Thomas J.
Tschida Douglas L.
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