Enslaved active implantable medical device with reduced power co

Details Enslaved active implantable medical device with reduced power co Enslaved active implantable medical device with reduced power co

1996-10-11

1998-06-16

Getzow, Scott M.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1365

Patent

active

057662282

ABSTRACT:
An active implantable medical device, particularly a rate responsive cardiac pacemaker having reduced power consumption. The device has a first sensor to measure a parameter that is used to control at least one function of the device, particularly a cardiac stimulation frequency, and a first sensing circuit for receiving and processing the output signals delivered by the first sensor. A switch is used to switch in and out of service the first sensing circuit according to the determined activity level of the patient bearing the device. The first sensing circuit determines a state of activity of the first sensor, this state being susceptible to take, according to predetermined criteria, a calculated value that is representative of a state of rest of the patient. The first sensing circuit is then switched according to the determined state of activity of the first sensor being established at the state of rest. Advantageously, a second sensor is used to measure a parameter representative of the activity of the patient and a second sensing circuit is used to receive and process the output signals delivered by this second sensor, such that the first sensing circuit is switched back in service as a function of the output signals delivered by the second sensor.

REFERENCES:
patent: 5014702 (1991-05-01), Alt
patent: 5065759 (1991-11-01), Begemann et al.

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