Researchers at the University of British Columbia
and Switzerland’s Paul Scherrer Institut have come up with a microneedle
that can painlessly measure drugs in a patient’s bloodstream without
requiring expensive and invasive blood draws.
The device is a small, thin patch that is pressed
against a patient’s arm during medical treatment. Its minute,
needle-like projection measures less than half a millimeter long and
doesn’t penetrate the skin like a standard hypodermic needle.
The microneedle is designed to puncture the outer
layer of skin, but not the next layers of epidermis and the dermis,
which house nerves, blood vessels and active immune cells.
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