Water resistant wearable medical device

An accessory kit for use with a wearable medical device, the wearable medical device including a control unit and a first plurality of electrodes electrically coupled to the control unit, the first plurality of electrodes including a first plurality of ECG sensing electrodes and a first plurality of therapy electrodes configured to provide a defibrillating shock to a body of a patient, the accessory kit comprising:

• a second plurality of electrodes, distinct from the first plurality of electrodes, configured for attachment to the body of the patient in a wet environment, and including a second plurality of ECG sensing electrodes and a second plurality of therapy electrodes, the second plurality of therapy electrodes being distinct from the second plurality of ECG sensing electrodes and being configured to provide a defibrillating shock to the body of the patient, the second plurality of electrodes being electrically coupled to a connector that is configured to removably and electrically couple to the control unit of the wearable medical device;
• and
• a waterproof enclosure configured to receive the control unit and protect the control unit during operation in the wet environment;
• wherein at least one of the second plurality of electrodes is configured to be adhesively attached to the patient during a period when the patient is in the wet environment.

An accessory kit for use with a wearable medical device, the wearable medical device including a control unit and a first plurality of electrodes electrically coupled to the control unit, the first plurality of electrodes including a first plurality of ECG sensing electrodes and a first plurality of therapy electrodes configured to provide a defibrillating shock to a body of a patient, the accessory kit comprising:

• a second plurality of electrodes, distinct from the first plurality of electrodes, configured for attachment to the body of the patient in a wet environment, and including a second plurality of ECG sensing electrodes and a second plurality of therapy electrodes, the second plurality of therapy electrodes being distinct from the second plurality of ECG sensing electrodes and being configured to provide a defibrillating shock to the body of the patient, the second plurality of electrodes being electrically coupled to a connector that is configured to removably and electrically couple to the control unit of the wearable medical device;
• and
• a waterproof enclosure configured to receive the control unit and protect the control unit during operation in the wet environment;
• wherein each of the second plurality of ECG sensing electrodes and each of the second plurality of therapy electrodes are configured to be adhesively attached to the patient during a period when the patient is in the wet environment.