Active implantable medical device having a control function resp

Details Active implantable medical device having a control function resp Active implantable medical device having a control function resp

1996-09-17

1998-03-03

Getzow, Scott M.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1365

Patent

active

057229961

ABSTRACT:
An active implantable medical device, particularly a cardiac pacemaker, enslaved to at least one physiological parameter. The device is susceptible to function in an enslaved mode by controlling at least one function, particularly that of a cardiac stimulation frequency, based on at least one physiological parameter, and includes at least one effort sensor, measuring a predominantly physiological parameter and delivering an output signal that is a function of the effort developed by a patient bearing the device and at least one activity sensor, especially a sensor having a response time that is more rapid than the effort sensor, for measuring a predominantly physical parameter. The device also includes a selection means, functioning in response to at least one activity and at least one effort signal of each of the sensors, to analyze periodically the relative sequence of successive state changes of the sensors according to predetermined criteria intrinsic to the device, and to select one of the sensors for the enslavement function as a result of this analysis, in a manner to realize, at a given moment, an enslavement mode function respecting most nearly the physiology of the patient corresponding to the activity and effort level of the patient at the given moment.

REFERENCES:
patent: 4867161 (1989-09-01), Shaldach
patent: 5014702 (1991-05-01), Alt
patent: 5097831 (1992-03-01), Lekholm

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