Activity sensor for a heart pacemaker
US4896068A · kind A · utility
53Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1989 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Apr 28, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/302
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.