Patent · US Expired

Method and sensor for wireless measurement of physiological variables

US6312380A · kind A · utility

79Cited by

12References

20Claims

0Family size

Assignee

Radi Medical Systems AB · SE

Inventors

Bertil Hoek · Enköping, SE
Ola Hammarstroem · Alunda, SE
Per Benkowski · Uppsala, SE
Per von Malmborg · Uppsala, SE
Lars Tenerz · Uppsala, SE

Key dates

Filing date	Dec 23, 1998
Grant date	Nov 6, 2001
Priority date	—
Expiry date	Dec 23, 2018

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B8/4472
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The sensor guide wire assembly having a sensor element is inserted into the patient's body. Acoustic or electromagnetic waves are then emitted from an external source toward the senor element. The sensor element receives the incident waves and enters into a resonating state. The characteristics of the resonance correspond to the variable or variables to be measured. A transducer is located externally from the patient's body and receives the scattered wave and transmits a resultant signal to an electronic drive and detection unit for signal analysis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.