Methods and devices for monitoring the integrity of a fluid connection

US11300474B2 · kind B2 · utility

Assignee

• GAMBRO LUNDIA AB · SE

Inventors

• Martin Furmanski · Malmö, SE
• Anders Roslund · Malmö, SE
• Bo Olde · Lund, SE
• Kristian Solem · Katrineholm, SE
• Thomas Hertz · Lund, SE
• Jan Sternby · Lund, SE

Key dates

• Filing date: Aug 18, 2016
• Grant date: Apr 12, 2022
• Expiry date: Jul 9, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/49
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of monitoring the integrity of a fluid connection between first and second fluid containing systems based on at least one time-dependent measurement signal from a pressure sensor in the first fluid containing system. The pressure sensor detects first pulses originating from a first pulse generator in the first fluid containing system and second pulses originating from a second pulse generator in the second fluid containing system. A parameter value representing a distribution of signal values within a time window is calculated by analyzing the measurement signal in the time domain and/or by using information on the timing of the second pulses in the measurement signal. The parameter value may be calculated as a statistical dispersion measure of the signal values, or from matching the signal to a predicted temporal signal profile of the second pulse. The integrity of the fluid connection is determined from the parameter value.