Surgery – Truss – Pad
Patent
1990-04-30
1991-05-14
Jaworski, Francis
Surgery
Truss
Pad
A61N 100
Patent
active
050147030
ABSTRACT:
An activity-based variable rate pacemaker senses motion in a preselected low frequency range to detect physical activity of the patient and produce an electrical signal having amplitude maxima and minima representative of the speed and intensity of the physical activity. The electrical signal is selectively limited to appreciable amplitude values for detected physical activity which is related to true physical exercise by the patient, in contrast to detected physical activity which is related to internal and external disturbances on the patient. The amplitude maxima and minima of the selectively limited signal are detected in successive equal intervals of time, the results obtained for consecutive blocks of time each containing the same number of successive equal intervals of time are compared to determine whether the physical exercise is more vigorous or less vigorous than that determined for a predetermined number of immediately preceding blocks, and the pacing rate is adjusted accordingly. The amplitude maxima and minima are sampled at a relatively low rate to conserve energy, and the time intervals are about 300 milliseconds each.
REFERENCES:
patent: 4428378 (1984-01-01), Anderson et al.
patent: 4771780 (1988-09-01), Sholder
patent: 4802481 (1989-02-01), Schroeppel
patent: 4907593 (1990-03-01), Rapach et al.
Intermedics Inc.
Jaworski Francis
Manuel George
LandOfFree
Rate responsive cardiac pacemaker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rate responsive cardiac pacemaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rate responsive cardiac pacemaker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1640743