Medical device inserters and processes of inserting and using medical devices

A glucose monitoring assembly, the assembly comprising:

• (1) an inserter, comprising:
• a sharp carrier assembly disposed in the inserter, wherein the sharp carrier assembly comprises a sharp configured to insert a portion of a glucose sensor into a subject;
• and
• a spring comprising a proximal end disposed in an interior of the sharp carrier assembly;
• (2) an on body electronics unit, comprising:
• an on body electronics unit housing comprising a top surface and a bottom surface, wherein the top surface comprises a first aperture, the bottom surface comprises a second aperture, and wherein a passageway extends through the on body electronics unit between the first aperture and the second aperture;
• the glucose sensor;
• and
• on body electronics coupled with the glucose sensor, wherein the on body electronics are disposed in the on body electronics unit housing, and wherein the on body electronics comprise a processor, memory, a power supply, and wireless communication circuitry configured to wirelessly communicate data indicative of a glucose level,
• wherein the inserter and the on body electronics unit are disposed in a product packaging, and wherein the on body electronics unit is entirely within the inserter when the on body electronics unit and the inserter are within the product packaging,
• wherein the sharp carrier assembly is in direct and removable engagement with the on body electronics unit housing when the sharp carrier assembly and the on body electronics unit are in a proximal position entirely within the inserter, wherein the engagement is external to the passageway and in a spaced relation with the first aperture,
• wherein the inserter is configured to:
• advance the sharp carrier assembly and the on body electronics unit from the proximal position to a distal position such that the sharp inserts the portion of the glucose sensor into the subject and the on body electronics unit housing is secured to a skin surface of the subject in the distal position, and
• automatically retract the sharp carrier assembly from the distal position to a retracted position entirely within the inserter,
• wherein the sharp extends through the second aperture when the sharp carrier assembly and the on body electronics unit are in the proximal position, and
• wherein the inserter further comprises a distal end configured to be placed on the skin surface of the subject before advancement of the sharp carrier assembly and the on body electronics unit from the proximal position.