Improved automatic chest compression systems which use constricting belts, repeatedly inflating bladders, or reciprocating pistons to compress the chest. A bladder is placed between the chest and the particular mechanism used to compress the chest during CPR. The bladder maximizes the effectiveness of chest compressions.

A computing device includes a memory configured to store instructions. The computing device also includes a processor to execute the instructions to perform operations that include providing an alternating electrical signal to a patient through at least a pair of electrodes, and determining transthoracic impedance of the patient from a measurement associated with the applied alternating electrical signal. Operations also include identifying, from the transthoracic impedance, a sequence of resistance values for controlling the discharge of a charge storage device located external to the patient, and controlling the discharge of the charge storage device using the identified sequence of resistance values.

An example of a CPR data recording system includes a hand-held chest compression measurement device and an external computing device communicatively coupled to the hand-held chest compression measurement device. The hand-held chest compression measurement device includes a housing, a motion sensor, a communication device, a memory disposed within the housing, and a processor disposed within the housing. The processor is configured to process a signal output from the motion sensor, calculate chest compression data from the processed signal output, evaluate the chest compression data after a delay from a start of the chest compressions to identify chest compressions that satisfy a pre-determined quality criterion, record the chest compression data in the memory, and send the recorded chest compression data to the external computing device via the communication device. The external computing device is configured to enable a review of the chest compression data.

A patient management system for providing patient queues of patient reports to users includes communications circuitry configured to receive first physiological information from monitoring medical devices being worn by a first plurality of patients and receive second physiological information from therapeutic medical devices being worn by a second plurality of patients. Each of the monitoring medical devices is configured to sense one or more predetermined physiological parameters of its respective patient. Each of the therapeutic medical devices is configured to monitor its respective patient for a predetermined physiological condition and provide a treatment. The patient management system also includes at least one processor configured to prepare a plurality of monitoring patient reports, prepare a plurality of therapeutic patient reports, generate a patient queue based on the pluralities of monitoring and therapeutic patient reports, and provide the patient queue to an end user computing device via the communications circuitry.

A method and system for expediting the rescue of victims experiencing sudden cardiac arrest (SCA) when used in conjunction with an automated external defibrillator (AED). The system involves an apparatus that calls for help (i.e. 911), detects SCA and cardiac arrhythmias, locates an AED, guides the rescuer through CPR and connection of the AED. A second apparatus is in the enclosure that contains the AED, sends location information to the other apparatus, triggers audible and visual indicators, and provides information on the victim's location.

An automated resuscitation system is provided, which can improve the outcome of patients suffering ventricular fibrillation or the ventricular tachycardia variants of cardiac arrest. This outcome can be achieved by a device that integrates automatic mechanical or pneumatic capability with electrical countershock capability such that the probability of defibrillation or cardioversion with return of spontaneous circulation is increased.

An ECG signal processing system which removes the CPR-induced artifact from measured ECG signals obtained during the administration of CPR.

A wearable medical device, comprising: a garment configured to be worn about a torso of a patient; one or more sensors for detecting a characteristic of a cardiopulmonary resuscitation (CPR) therapy; an output device; and a processor configured for processing information from the one or more sensors and providing, to the output device, information about the CPR therapy, wherein at least one of the one or more sensors is movably attached to the garment, the at least one sensor configured to be positioned to the center of the patient's chest prior to initiation of the CPR therapy.

In various embodiments, the presently described methods, apparatus, and systems can facilitate decreasing a boot time of a medical device, e.g., an amount of time between when a medical device or system is first turned on or powered on and when the medical device or system is ready to perform its intended function. In some embodiments, the present disclosure can also facilitate conducting tests on the functionality of various operational circuits shortly or immediately after the device/system has been activated. In some cases, the emergency medical devices/systems can report on the status or functionality of operational circuits even before the emergency medical device is fully booted up and ready to perform some or all of its intended functions.

A device for the determination of at least one compression parameter during the administration of cardiopulmonary resuscitation (CPR) on a patient. The device includes a compression unit adapted to move in accordance with the chest of a patient and a surface unit adapted to move in accordance with a surface supporting the patient. The compression unit has one of a signal component and reference component, the surface unit has the other of the signal component and the reference component. The device also includes a processor configured to determine a relative measurement between the compression unit and the surface unit using data derived from the signal component and the reference component. The processor is further configured to determine the at least one compression parameter based on the relative measurement. The determined at least one compression parameter takes into account any motion and/or displacement of the surface.