Apparatus for detecting probe dislodgement
US4399823A · kind A · utility
33Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Oct 5, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/24
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A loose probe alarm in which a temperature responsive element (14) arranged for attachment to a body is periodically heated (20, 22, 26) and the effects of self-heating of the temperature responsive element are monitored (32, 36, 38) to determine whether the temperature responsive element has been dislodged from the body. The alarm is arranged to sense during the heating period of the temperature responsive element the difference in the amount of heat dissipated by the temperature responsive element when it remains in contact with the body to which it has been attached and when it has been dislodged from this body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.