We were asked to redesign the architecture and interface
of a two-part medical device
(PDA and sample reader)
that measures blood analytes from a fresh sample
at or near the patient.

The core functionality involves
running diagnostic tests on a blood sample while the user
(e.g. nurses, perfusionists, respiratory therapists)
enters other data needed to generate accurate results
(e.g. the patient’s age and weight).

Removing confusion and making the process efficient
were the primary goals.

The test process was designed
to carefully lead inexperienced users along
while also not interfering with the work of users
who are well-versed in the system.