Signal conditioning device for interfacing intravascular sensors having varying operational characteristics to a physiology monitor
US6585660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2001 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | May 18, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/92
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A signal conditioning device is disclosed that interfaces a variety of sensor devices, such as guide wire-mounted pressure sensors, to physiology monitors. The signal conditioning device includes a processor for controlling sensor excitation and signal conditioning circuitry within the signal conditioning device. The processor also supplies signals to an output stage on the signal conditioning device representative of processed sensor signals received by a sensor interface of the signal conditioning device. Power for the signal conditioning device processor is supplied by an excitation signal received from a physiology monitor that drives the output stage. In addition, a temperature compensating current source provides an adjustment current to at least one of a pair of resistive sensor elements to compensate for differences between temperature change upon the pair of resistive sensor elements, thereby facilitating nullifying temperature effects upon the resistive sensor elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.