System for controlled defibrillation and ventilation
Inventors
Kantor, Ehud • Shahar, Mark • Barkai, Nir
Assignees
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Publication Number
US-10307099-B2
Publication Date
2019-06-04
Expiration Date
Abstract
A system for providing decision-assisted critical care to a patient in medical emergency situations in an out of hospital setting includes: a ventilator; an Automated External Defibrillator that includes primary electrocardiogram (ECG) sensors configured as chest pads that can be connected to the chest of the patient and to sense ECG and to deliver an electric shock to the patient's heart; at least one secondary ECG sensor connected at a location other than the chest configured to sense ECG but not to deliver electric shock; and a controller configured, upon detection of shockable cardiac arrhythmias by at least one of said at least one secondary ECG sensors, to (a) instruct a caregiver to place the chest pads on the chest of the patient and to activate the AED, or (b) to automatically activate the AED if the chest pads are already in place on the chest of the patient.
Core Innovation
The invention provides a system for providing decision-assisted critical care to a patient in medical emergency situations in an out of hospital setting. The system combines a ventilator and an Automated External Defibrillator (AED) and includes a controller for caregiver assistance and/or automatic operation.
The ventilator comprises a pressure generator and a mask or endotracheal tube for delivering oxygen, air, or oxygen and air to the patient. The AED comprises a battery and primary electrocardiogram (ECG) sensors configured as chest pads connected to the chest of the patient, and the primary ECG sensors are configured to both sense ECG and deliver an electric shock to the patient’s heart.
The system further includes at least one secondary ECG sensor configured to sense ECG but not to deliver electric shock, and the secondary ECG sensors are connected to the body at a location other than the chest. The controller is configured, upon detection of shockable cardiac arrhythmias by at least one of the secondary ECG sensors, to instruct a caregiver to place the chest pads and activate the AED, or to automatically activate the AED if the chest pads are already in place.
Upon detection of shockable cardiac arrhythmia by at least one secondary ECG sensor, the AED applies shock therapy only in a case where the primary ECG sensors sense and confirm the existence of cardiac shockable arrhythmia according to standard protocol, and otherwise does not apply an electric shock.
Claims Coverage
The independent claim covers an out-of-hospital decision-assisted critical care system that integrates a ventilator with an AED that uses primary chest-pad ECG shock sensing and at least one non-chest secondary ECG sensor for decision support. The claim includes the controller logic for caregiver instruction or automatic AED activation and conditional shock application based on primary-sensor confirmation after secondary-sensor detection. It also includes dependent claim elements for ventilator delivery device options, secondary-sensor placement, and additional vital-sign detector sensing and ventilator operation control.
Out-of-hospital decision-assisted critical care system with ventilator and AED
A system for providing decision-assisted critical care to a patient in medical emergency situations in an out of hospital setting, comprising a ventilator for delivering oxygen, air, or oxygen and air, and an Automated External Defibrillator (AED) with a controller for decision-assisted operation.
AED with primary shock-delivering chest-pad ECG sensors and secondary non-chest ECG sensors
An AED comprising a battery and primary electrocardiogram (ECG) sensors configured as chest pads that sense ECG and deliver an electric shock, and at least one secondary ECG sensor configured to sense ECG but not to deliver electric shock and to be connected to a location other than the chest.
Controller instructs caregiver placement and activation or automatically activates AED upon secondary detection
A controller configured, upon detection of shockable cardiac arrhythmias by at least one of the secondary ECG sensors, to instruct a caregiver to place the chest pads on the chest and activate the AED, or to automatically activate the AED if the chest pads are already in place.
AED shock only after primary chest-pad confirmation
Upon detection of shockable cardiac arrhythmia by at least one secondary ECG sensor, the AED is configured to apply electric shock therapy according to standard protocol only in case the primary ECG sensors sense and confirm the existence of cardiac shockable arrhythmia, and not apply an electric shock if the primary ECG sensors do not sense and confirm the existence of cardiac shockable arrhythmia.
Ventilator patient-delivery mask or endotracheal tube for oxygen, air, or oxygen and air
The system includes the ventilator delivering to the patient one of oxygen, air, or oxygen and air using a mask or endotracheal tube.
Secondary ECG sensors connected at accessible location other than chest
Secondary ECG sensors are connected to the patient at an accessible location selected from the wrist, ankle, or neck.
Including vital-sign detectors in addition to ECG sensing
The system includes at least one vital signs detector.
Vital-sign detectors selected to verify breathing and guide operation
The vital-sign detectors are selected from Pulse Ox sensors, capnographs, non-invasive blood pressure sensors, and pressure sensors placed in the delivery means to verify the patient’s breathing.
Controller adjusts ventilator operation based on ECG and vital-sign detector readings
The controller adjusts a ventilator’s operation based on readings from at least one secondary ECG sensor and readings from at least one other vital signs detector.
Overall, the claim coverage centers on combining an out-of-hospital ventilator with an AED that uses secondary non-chest ECG sensors to detect shockable arrhythmias for decision assistance, while conditioning shock delivery on primary chest-pad ECG sensing and confirmation. The dependent claims further specify ventilator delivery device options, secondary ECG sensor accessibility locations, optional vital-sign detector types, and ventilator control adjustments based on secondary ECG and other vital-sign detector readings.
Stated Advantages
Conditionally applies electric shock therapy according to standard protocol only when the primary ECG sensors sense and confirm shockable arrhythmia; otherwise does not apply an electric shock.
Documented Applications
Medical emergency situations in an out of hospital setting requiring decision-assisted critical care using a ventilator and an AED.
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