Moment fraction computation for sensors

US8720276B2 · kind B2 · utility

Assignee

• Medtronic, Inc. · US

Inventors

• Jonathan L. Kuhn · Ham Lake, US
• Jonathan P. Roberts · Coon Rapids, US
• James D. Reinke · Maple Grove, US
• Richard J. O'Brien · Minneapolis, US
• Michael B. Terry · Camas, US
• Kamal Deep Mothilal · Maple Grove, US

Key dates

• Filing date: Jul 5, 2011
• Grant date: May 13, 2014
• Expiry date: Jun 4, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L15/00
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An implantable medical sensor system provides signals representative of a magnitude of moment fraction applied to a sensor module at a selected site. A sensor module includes a first transducer producing a first signal having an associated first response to pressure and strain applied to the sensor module and a second transducer producing a second signal having an associated second response to pressure and strain applied to the sensor module. A moment fraction is computed in response to the first signal and the second signal. In various embodiments, the moment fraction is used to guide positioning of the sensor module, indicate a need for repositioning the sensor module, report loading of the sensor module during normal operation for use as sensor design information and in setting sensor calibration ranges.