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

US10292899B2 · 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: Feb 6, 2015
• Grant date: May 21, 2019
• Expiry date: Feb 19, 2038

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 compressions on a patient's (182) chest that alternate with releases. The CPR machine includes a compression mechanism (148), and a driver system (141) configured to drive the compression mechanism. A compression force may be sensed, and the driving is 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. An advantage is that a changing condition in the patient or in the retention of the patient within the CPR machine may be detected and responded to.