Activity sensor for a heart pacemaker

Details Activity sensor for a heart pacemaker Activity sensor for a heart pacemaker

1989-04-28

1990-01-23

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

128419PG, 310330, 310338, 310359, 310366, H01L 4108, A61N 100

Patent

active

048960683

ABSTRACT:
An activity sensor wherein a piezoelement of the flexural type is employed. The activity sensor avoids a depolarization even given great mechanical stresses and simplifies the contacting of such a sensor regardless of the surfaces to which it is applied. It is provided in accord with the invention that the piezoelement is composed of two individual or inter-related piezoceramic parts arranged side-by-side which are oppositely polarized and are provided with electrodes on both sides. On one side, the electrodes are electrically connected to one another and, on the other side, are connected to terminals.

REFERENCES:
patent: 3239678 (1966-03-01), Kolm et al.
patent: 3456134 (1969-07-01), Ko
patent: 4428378 (1984-01-01), Anderson et al.
Vibrit, Piezoceramic of Siemens, Order No. B-281/5035, pp. 19 and 20.

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