The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2004
Filed:
Mar. 20, 2001
Bertil Hoek, Vasteras, SE;
Radi Medical Systems AB, Uppsala, SE;
Abstract
A method and a device for measuring a physiological variable in a living body, whereby a transmitter ( ) is disposed outside of the body to transmit radio frequent energy, and a receiver ( ) of radio frequent energy is disposed outside of the body. A transponder unit ( ), having a sensor ( ) sensitive to the physical variable, and a modulator unit ( ) for controlling the radio frequent energy absorption of the transponder unit according to a time-sequence representing said physical variable, is introduced into the body. The transmitter sends radio frequent energy of substantially constant frequency and amplitude onto the transponder, and the receiver monitors the radio energy absorption of the transponder unit to determine the time-sequence representing said physical variable. The time-sequence is decoded to interpret it as a measure of the physical variable.