Wearable cardiac defibrillation system with electrode assemblies having pillow structure

A Wearable Cardiac Defibrillator (WCD) system, comprising:

• a support structure comprising a pillow structure, the support structure configured to exert nonzero pressure to a body of a patient while worn by the patient;
• an electronics module;
• a signal conductor having a first end terminating in a first electro-mechanical connector and a second end configured to be coupled to the electronics module;
• and
• an electrode assembly comprising an electrode configured to be communicatively coupled to the electronics module;
• a moisture barrier disposed between the pillow structure and the electrode;
• and
• a flexible inner conductor configured to electrically couple the electrode to the first electro-mechanical connector,
• wherein the electrode assembly is configured to be coupled to the support structure so that the electrode is aligned with the pillow structure and placed against the body due to the nonzero pressure when the support structure is worn,
• wherein the pillow structure is placed between the electrode and the first electro-mechanical connector, wherein the pillow structure is configured to provide patient compliance with the WCD system, and wherein to provide the patient compliance, the pillow structure is flexible to acquire a first shape when the electrode assembly is subjected to the nonzero pressure and a second shape different from the first shape when the electrode is deposited on a flat level surface and the pillow structure is not being subjected to the nonzero pressure, and
• wherein the flexible inner conductor is configured to flex when the pillow structure transitions from the first shape to the second shape, and wherein the flexible inner conductor includes a first portion that is coextensive with the main surface of the electrode, and a second portion that is configured to make contact with the first electro-mechanical connector.