Lab on Chip
Bosch UX/UI Leonberg
Internship semester 2012/2013
Adrian Van Eyndhoven
In laboratory diagnostics, it is important to achieve fast analysis results on a daily basis, which can be accomplished with as few hand movements as possible. Especially when accommodating patients in hospitals, several studies have highlighted the importance of rapid admission and care. Due to a high risk of infection, a wide variety of pathogens must be tested as a preventative measure, which can take up to two hours today with conventional procedures. This represents a relatively long wait time, which is not sustainable in terms of the well-being of the patient.
With "Lab on Chip", a fully automated rapid test procedure was developed which guarantees the medical technical assistants in hospitals a trouble-free and contamination-free result. This is ensured by the use of a cartridge system, which makes processes such as sample preparation, cell lysis, DNA extraction, DNA amplification and bioanalytical detection a thing of the past.
The named steps now run autonomously in the diagnostic unit.
This has the advantage that a test can be broken down to a 30-minute duration. All sample materials such as liquids, tissue samples or sputum are easily suitable for the cartridge system.
Another positive aspect of "Lab on Chip" is the central diagnostic unit with built-in barcode scanner, which does not require any peripherals and therefore enables easy cleaning.
Preparation of presentations
Evaluation of audio recordings
Creation of illustrations
Preparation of the test set for user testing
Creation of the click prototype in Balsamiq
Transition prototype in Flash
Documentation of the survey (image & sound)
Learning new approaches
Laboratory specific context is complex
Time management is structured in a
difficult for international companies
Repeating user tests
Realisation of diagnostic unit
At the beginning of the project, a small visit was made to the Robert Bosch hospital in Stuttgart. The current status quo of laboratory diagnostics was examined.
The first impressions were gathered early on and a rough picture of the subject could be obtained. Not only everyday actions but also problems were also noted and used for the further course of the project.
Another visit to the Robert Bosch hospital was used to record both the work processes and the atmosphere in the room. Back in the project room, these
impressions were examined more closely and the ten top findings were generated.
Moderated user test
After finalizing the prototypes, they had to be tested. Therefor they were tried out in the Robert Bosch hospital by medical-technical assistants who already worked with comparable methods. The laboratory specialists were asked to explain each of their steps and, if necessary, to identify incomprehensible situations. The suggestions for improvement identified in the test were then taken into account.
At a certain point in the project it had to be decided which components should consist in the diagnostic unit. All possible individual components with the respective variants were sketched and a diagram was created. At the end, the team determined the optimal solution approach by linking the selected variants with each other.
Relevant conditions were identified on the basis of the top findings. With the question "how" possibilities were filtered out and integrated into the diagnostic unit to be developed. Questions were raised regarding hygiene standards, potential hazards and efficient work.
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