Patent · US Expired

Method and sensor for wireless measurement of physiological variables

US6517481B2 · kind B2 · utility

70Cited by

20References

6Claims

0Family size

Assignee

Radi Medical Systems AB · SE

Inventors

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

Key dates

Filing date	Sep 12, 2001
Grant date	Feb 11, 2003
Priority date	—
Expiry date	Sep 12, 2021

Classification

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

Abstract

The sensor and guide wire assembly having a sensor element is inserted into the patient's body. Acoustic or electromagnetic waves are them emitted from an external source toward the sensor 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.