Tensioning Applicators for Attaching Wearable Medical Devices to Skin Surfaces and Methods Thereof

An applicator for attaching a wearable medical device to a skin surface, the applicator comprising:

• a loading actuator configured to counter-rotationally load a first rotationally-distinct segment and a second rotationally-distinct segment within a wearable medical device,
• a retaining system configured to retain the wearable medical device in a counter-rotationally loaded configuration;
• a skin-tensioning system comprising:
• a plurality of tensioning microneedles, and
• a tensioning actuator configured to rotate the plurality of tensioning microneedles around an area in which the wearable medical device is contained within the applicator;
• and
• a mechanism for releasing the wearable medical device from the counter-rotationally loaded configuration,
• the wearable medical device comprising:
• a base comprising:
• a first rotationally-distinct segment,
• a second rotationally-distinct segment, the second rotationally-distinct segment being at least partly surrounded by the first rotationally-distinct segment,
• a plurality of first microneedles located on the first rotationally-distinct segment, and
• a plurality of second microneedles located on the second rotationally-distinct segment;
• and
• at least one communication member, the at least one communication member being in communication with the first rotationally-distinct segment and the second rotationally-distinct segment.