04562841 is referenced by 269 patents and cites 7 patents.

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.

Title
Programmable multi-mode cardiac pacemaker
Application Number
6/405711
Publication Number
4562841
Application Date
August 5, 1982
Publication Date
January 7, 1986
Inventor
Perry A Mills
Roseville
MN, US
Douglas C Morrison
St. Paul
MN, US
Brock S Lindstedt
St. Paul
MN, US
Daniel E Huntwork
White Bear Lake
MN, US
Robert D Dreher
Roseville
MN, US
Brian P Brockway
Minneapolis
MN, US
Agent
Douglas L Tschida
Thomas J Nikolai
Orrin M Haugen
Assignee
Cardiac Pacemakers
MN, US
IPC
A61N 1/36
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