发明名称 |
Programmable multi-mode cardiac pacemaker |
摘要 |
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.
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申请公布号 |
US4562841(A) |
申请公布日期 |
1986.01.07 |
申请号 |
US19820405711 |
申请日期 |
1982.08.05 |
申请人 |
CARDIAC PACEMAKERS, INC. |
发明人 |
BROCKWAY, BRIAN P.;DREHER, ROBERT D.;HUNTWORK, DANIEL E.;LINDSTEDT, BROCK S.;MORRISON, DOUGLAS C.;MILLS, PERRY A. |
分类号 |
A61N1/362;A61N1/368;A61N1/372;(IPC1-7):A61N1/36 |
主分类号 |
A61N1/362 |
代理机构 |
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代理人 |
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