Stryker Corporation

Dale R Beuning

Mark Rutzer

Steven Barry Duke

David B Stewart

Fred William Chapman

Dennis M Skelton

Tyson G Taylor

Daniel W Piraino

Ryan William Apperson

James Wootten

Thangeswaran Natarajan

Richard Mackie

Alexander Frolov

Mark G Killebrew

Robert Bales

Seshadri K Padmanabha

Defibrillators with enhanced functionality during cardiopulmonary resuscitation (CPR) periods are described. The enhancements include predicting a length of a charging period of a capacitor of the medical device so that capacitor is shock charged at the end of the CPR period. The enhancements also include re-assessing an electrocardiogram (ECG) signal for continued presence of a shockable rhythm during the CPR period and before administration of a defibrillation shock. Together the enhancements can improve the timing and recommended administration of defibrillation therapy.

Defibrillators with enhanced functionality during cardiopulmonary resuscitation periods

Systems and techniques to ensure reliable operation of devices, such as medical devices, that are configured to execute installed software are described. A secure software update process for the device utilizes multiple integrity checks in order to prove that software integrity has not been compromised before the device is allowed to be put into service with the software installed thereon. Also described is a computer architecture for an external defibrillator that isolates the execution of installed software applications by separately compiling the code for those applications and by executing the separately-compiled applications on different processors of the defibrillator. Among other things, this allows the defibrillator to be 'brought online' faster, such as to deliver a shock to a patient.

Secure software updates and architectures

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Seattle, WA, United States of America

Dale R Beuning