CPR chest compression machine adjusting motion-time profile in view of detected force

US11723834B2 · kind B2 · utility

Assignee

• PHYSIO-CONTROL, INC. · US

Inventors

• Anders Nilsson · Åkarp, SE
• Jonas Lagerstrom · Fagersanna, SE
• Bo Mellberg · Lund, SE
• Anders Jeppsson · Lund, SE
• Marcus Ehrstedt · Lund, SE
• Bjarne Madsen Härdig · Lund, SE
• Fredrik Arnwald · Lomma, SE
• Erik von Schenck · Lomma, SE
• Paul Rasmusson · Furulund, SE
• Sara Lindroth · Lund, SE
• Fred W. Chapman · Newcastle, US
• Ryan Landon · Redmond, US
• Mitchell A. Smith · Sammamish, US
• Steven B. Duke · Bothell, US
• Krystyna Szul · Seattle, US
• Gregory T. Kavounas · Bellevue, US

Key dates

• Filing date: Apr 23, 2021
• Grant date: Aug 15, 2023
• Expiry date: Sep 17, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61H2230/405
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A CPR machine (100) is configured to perform, on a patient's (182) chest, compressions that alternate with releases. The CPR machine includes a compression mechanism (148), and a driver system (141) configured to drive the compression mechanism. A force sensing system (149) may sense a compression force, and the driving can be adjusted accordingly if there is a surprise. For instance, driving may have been automatic according to a motion-time profile, which is adjusted if the compression force is not as expected (850). An optional chest-lifting device (152) may lift the chest between the compressions, to assist actively the decompression of the chest. A lifting force may be sensed, and the motion-time profile can be adjusted if the compression force or the lifting force is not as expected.