In some embodiments, a wearable medical device system includes a processor configured to determine whether a patient requires electrical therapy to be provided via a plurality of therapy electrodes, the electrical therapy comprising discharging at least a portion of a stored electrical charge from an energy storage module, and if so, cause a fluid deploying mechanism to deploy a portion of the stored fluid to an interface between at least two therapy electrodes and the patient's skin prior to providing the electrical therapy, the deployed portion of fluid adapted to decrease the impedance measured by an impedance measurement circuit, and cause the fluid deploying mechanism to deploy an additional portion of fluid in response to the impedance measured by the impedance measurement circuit increasing above a threshold during the electrical therapy.

A method and a device for defibrillation. When a shock is generated, energy is transmitted from the low-voltage range to a high-voltage range, at least one current surge being generated in the low-voltage range, stepped up to the high-voltage range and guided to electrodes. An energy supply, power electronics and an energy storage device are used in the low-voltage range.

According to at least one aspect, an external medical device is provided. The external medical device includes at least one electrode to detect cardiac activity of a patient, a treatment component to provide a therapy to the patient based at least in part on the detected cardiac activity, a user interface including at least one caregiver interface and at least one patient interface, and a processor in communication with the user interface. The processor may be configured to provide a first set of information to the caregiver interface and a second set of information to the patient interface. The first set of information may include information for operating the external medical device in conjunction with the patient and the second set of information may include information for allowing the patient to cause the external medical device to suspend providing the therapy to the patient.

A therapeutic device for treating an acute medical condition of a patient such as cardiac arrest is provided. The device includes one or more sensors that monitor parameters such as heart rhythm that relate to the patient's medical condition. The device also includes a plurality of medication reservoirs, each reservoir including a conduit, wherein each reservoir holds a predetermined medication that may be used to treat the condition. A manifold is connected with the reservoirs via their respective conduits. A delivery line is connected with the manifold to deliver fluids from the manifold to the patient intravenously. One or more medication pumps are in fluid connection with respective ones of the reservoirs. A processor is connected with the sensors. The processor includes a memory that stores processing instructions to interpret the parameters and to determine a recommended medication to deliver to the patient based on the parameters, the recommended medication being one of the predetermined medications. The processor is operatively connected with the medication pumps. When a recommended medication is determined, the processor actuates the medication pump connected with the reservoir including the recommended medication to deliver the medication to the patient via the manifold and the delivery line.

The present invention discloses a method for synchronized ventilation using an external diaphragm pacemaker and a ventilator, which includes the following steps: (1) filtrating captured EAdi signal to reduce the noises, (2) assessing the absolute peak value a of the EAdi signal and: if a<0.5 V, adjust the external diaphragm pacemaker to issue a stimulus current at a frequency of 10-12 beats per minute, and at the same time trigger the ventilator to perform ventilation in an assisted ventilation mode; if 0.5a1.0 V, adjust the external diaphragm pacemaker to issue a stimulus current at a frequency of 5-8 beats per minute, and at the same time trigger the ventilator to perform ventilation in an assisted ventilation mode; if 1.0<a2.0 V, adjust the external diaphragm pacemaker to issue a stimulus current at a frequency of 3-4 beats per minute and at the same time trigger the ventilator to perform ventilation in an assisted ventilation mode. The present invention also discloses a device which couples an external diaphragm pacemaker to a ventilator. The present invention brings the external diaphragm pacemaker into the application of mechanical ventilation in the emergency room and intensive care unit.

A patient-worn arrhythmia monitoring and treatment device weight between 250 grams and 2,500 grams includes at least one contoured pad configured to be adhesively coupled to a patient's torso, a plurality of therapy electrodes, at least one of which is integrated with the at least one contoured pad, and a plurality of ECG sensing electrodes, at least one of which is integrated with the at least one contoured pad. At least one housing configured to form a watertight seal with the at least one contoured pad extends no more than 5 cm from the contoured pad. A processor disposed within the housing is coupled to a therapy delivery circuit and configured to detect one or more treatable arrhythmias based on at least one ECG signal and cause a therapy delivery circuit to deliver at least one defibrillation pulse on detecting the one or more treatable arrhythmias.

In one example, an apparatus of a wearable cardioverter defibrillator (WCD) system comprises a support structure wearable by a patient, a plurality of electrocardiogram (ECG) electrodes to obtain an ECG signal, a processor to receive and analyze the ECG signal of the patient, wherein the processor is configured to monitor four or more channels of the ECG signal, a high voltage subsystem coupled with defibrillation electrodes configured to be coupled with patient, wherein processor is configured to cause the high voltage subsystem to apply a therapeutic shock to the patient through the defibrillation electrodes in response to a shockable event detected by the processor from the ECG signal. The processor measures a peak-to-peak amplitude of QRS complexes of the ECG signal, and detects asystole in the patient when the peak-to-peak amplitude of one or more QRS complexes is less than an asystole threshold. Other examples and related methods are disclosed herein.

Aspects of the disclosure relate to an instrument for pacing, mapping, sensing, and/or ablating cardiac tissue that includes an electrogram filtering circuit. To supply radio frequency energy, the disclosed instruments are only optionally connected to a radio frequency generator. When connected to a generator, the electrogram filtering circuit can be provided in a handle of the instrument, or in a connector, for example, to protect the instrument from potentially high-powered radio frequency energy. Alternatively, various disclosed embodiments are capable of pacing/sensing as a standalone device. The connector can be provided separately from both the instrument and the generator. In some embodiments, the electrogram filtering circuit is adaptive to suit a variety of generators.

An electrical connector includes a plug that mates with a receptacle. In a medical application, the plug is connected to electrical leads that pass through a patient's skin to an implanted medical device in the patient's body, while the receptacle is connected to external medical equipment. All electrical contacts in the plug are on internal portions. The receptacle includes annular contacts that contact the internal electrical contacts on the plug when the plug and receptacle are properly mated. The receptacle includes a plurality of annular electrical contacts that have a first diameter and are separated by a plurality of annular insulators having a second diameter smaller than the first diameter.

Systems, devices and methods for providing a pressurized fluid for facilitating conductive gel release prior to providing cardiac therapy to a patient are disclosed. A first system can include a chemical reaction chamber including a first chemical and a second chemical isolated from each other by a mechanical barrier. The mechanical barrier is configured to be compromised upon receiving a signal from an electrotherapy device controller such that the first chemical and second chemical come into contact to produce a sufficient amount of pressurized fluid. An alternative system can include a pressure source comprising a reservoir containing a pressurized fluid. The pressure source can also include at least one release mechanism configured to cause a release of the pressurized fluid from the reservoir to an exit port of the pressure source when a wearable medical device is preparing to deliver a therapeutic shock to a patient.