Apparatus for heating tissue with a photoplethysmograph sensor
US5158082A · kind A · utility
238Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 23, 1990 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Aug 23, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1491
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for increasing the blood flow in a patient's tissue by warming the tissue with heat generated by a semiconductor device mounted in a sensor. The amount of heat generated is controlled by varying either the magnitude or the duty cycle of the current that flows through the semiconductor device, with the amount of heat required determined by either the temperature of the sensor's contact surface or the operating performance of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.