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PSA testing with only a drop of blood

"One of the 50 Most Innovative Companies in the World for 2011" - MIT Technology Review.
client
Claros Diagnostics, Inc purchased by OPKO Health, Inc.
industry
Medical
SERVICES
Graphical User Interface
Human Factors Engineering
Industrial Design
Manufacturing Transition
Mechanical Engineering
Prototyping and Testing
Software Engineering
User Experience

Microfluidics allows testing right in a doctor's office

Project Background

To get a PSA (prostate-specific antigen) test, while checking for prostate cancer, a patient would need to get blood drawn in a lab, and wait for the results, and then make a follow up appointment to discuss the results.

Claros uses microfluidics technology, which allows for the manipulation of fluids on a chip at microscopic scales, to develop inexpensive, easy-to-use diagnostic devices that can be deployed at the point of care using only a finger stick drop of blood. We helped them with how the technology could be used without needing a trained phlebotomist on site. Claros has successfully validated the technology for urology and infectious disease market applications, and this validation will serve as a bridge to other test panels for infectious disease, cardiology, women’s health, companion diagnostics, and almost any field of blood diagnostics.

Intuitive technology that is easy to learn
Sketch of a device for PSA testing
Sketch of a device for PSA testing
Sketch of PSA testing device
Sketch of PSA testing device
Internal view of PSA testing device
User testing for an instant PSA test.
Simple Blood Collection and Analysis
project overview

The key to a project that changes the paradigm of blood based tests as much as Claros did is making the collection of the blood sample as easy as possible. Traditional blood sampling methods require a visit to a lab for filling a Vacutainer® of blood to send to a lab, but as the Claros device can use a much smaller sample it gave us the opportunity to use a simple finger prick and capillary tube to get enough blood for analysis.

 

Development & Testing

We developed an easy to hold capillary tube that had indicated to the user when it had sufficient blood collected, and enclosed that in a housing that would snap into the disposable test cassette, ready for analysis. The complete system was designed so a user could get a suitable sample with minimal training.

The desktop analyzer contained all the hardware to pull the sample of blood into the microfluidic channels for analysis. Lab space in a urology office is at a premium. We designed the tabletop analyzer to have a small footprint to be less intrusive in the environment. We selected a large display and developed a graphical user interface (GUI) that walks the user through each step of the process.

We were also tasked with selecting and managing a software development partner to analyze optical sensor data to perform complex laboratory-quality assays.

Our human factors group performed formative and summative testing with RNs and MDs to verify and validate that the PSA system was safe and effective with the intended users in the intended environment.

 

results

Successful execution of the first-of-its-kind system that provides rapid, quantitative test results within 10 minutes, directly in a physician’s office. Supported the product through contracting manufacturing as well as FDA and CE-Mark approval.

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