A medical apparatus provides resuscitative therapy to a patient. The apparatus includes an electrocardiogram (ECG) input, a defibrillation output configured to provide an electrical defibrillation shock treatment, and an applicator body configured to provide active compression decompression therapy to the patient's chest. The applicator body includes a rescuer end configured for hands of the rescuer to press and pull on the applicator body, a coupling surface configured to adhere to the patient's chest to provide active compression decompression therapy, a capacitor, and processor(s) configured to receive and analyze the ECG signal of the patient, determine whether the patient is in need of defibrillation, and administer the defibrillation shock treatment to the patient.

A system and method for mechanical CPR can include a device for providing compressive force to various locations on a patient, and biological monitoring systems to measure the effectiveness of the various locations of compressive force in pumping blood through the patient. The system can also include providing decompressive force to increase the efficacy of blood flow.

An elevation device used in the performance of cardiopulmonary resuscitation (CPR) and after resuscitation includes a base and an upper support operably coupled to the base. The upper support is configured to elevate an individual's upper back, shoulders and head. The elevation device also includes a chest compression device coupled with the base. The chest compression device is configured to compress the chest and to actively decompress the chest.

The disclosed CPR devices, systems, and methods adjust a compression depth of a compression mechanism to account for chest collapse of the patient receiving CPR. Compression depth can be adjusted up to a maximum depth in some examples. The compression depth can also be adjusted linearly or non-linearly as the zero point or starting position of the patient's chest changes due to chest collapse. Other factors can also be used to adjust the compression depth such as patient parameters that can be observed by a rescuer or sensed by sensors wirelessly connected to or integrated into the system. CPR devices that include active decompression can also use the disclosed techniques for adjusting the chest compression depth as the patient's chest collapses.

A method for ventilating a patient during CPR including repeatedly compressing the patient's chest and delivering a positive pressure ventilation to the patient primarily during a decompression phase of the repeated compressions of the patient's chest.

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.

A Cardio-Pulmonary Resuscitation (CPR) device can include a compression mechanism configured to perform successive CPR compressions on a chest of a patient, the compression mechanism including a piston and a contact member attached to the piston, the contact member configured to make and maintain contact with the chest at a first position and a first orientation. The CPR device can also include a controller communicatively coupled with the compression mechanism, the controller configured to: receive at least one input; determine whether the piston should be adjusted based on the at least one input; and responsive to a determination that the piston should be adjusted, cause the piston to move so that the contact member makes and maintains contact with the chest at a second position and a second orientation.

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.

Techniques and devices for extending a piston, for example connected to a medical device such as a mechanical CPR device, to accommodate different sized patients, are described herein. In some cases, a piston of a mechanical CPR device may include an inner piston at least partially slidable into an external piston sleeve. In one aspect, an external piston spacer may be attached to an outward surface of the inner piston to extend the length of the piston. In another aspect an internal bayonet sleeve may contact one or more locking rods at various positions, enabling adjustment of the length of the inner piston. In yet another aspect, a piston adapter may be removably attached to the end of the piston. In all aspects, the change in length of the piston may be detected and used to modify movement of the piston, for example to more safely perform mechanical CPR.

An automated chest compression (CC) system is described that includes a chest compressor configured to administer chest compressions to a patient, at least one tilt adjuster configured to tilt at least the head of the patient to a tilt angle during the administration of chest compressions to the patient, a patient support structure configured to couple to the chest compressor and to the at least one tilt adjuster, one or more tilt sensors, and a CC device controller configured to control the chest compressor to administer the chest compressions at a resuscitative rate, receive one or more signals, from the one or more tilt sensors, indicative of the tilt angle, determine tilt angle information from the one or more signals indicative of the tilt angle, and provide the tilt angle information to a user interface, wherein the patient support structure is adapted to support the back of the patient.