Craig Arnold: A wristband that makes I.V. injections safe, quick and reliable

Oct. 6, 2020

A portable intravenous injection device aims to allow quick and reliable intravenous access for anyone at any time, in any place.

Miles Cole, Class of 2022, began working on the device as a first-year student at Princeton University. Diagnosed at birth with a rare blood disorder, Cole performs venous injections on himself daily and is well acquainted with the challenges of venous punctures. Upon doing some research, he found that needle-injection technology hadn’t changed in a century, and nearly a quarter of all needle insertions fail on the first attempt. He envisioned creating a device that could be attached to the arm like a watch. The user would simply press a button and inject medicine into the vein. The device could also be used to draw blood.

To build the technology, Cole teamed with Craig Arnold, a professor of mechanical and aerospace engineering, to develop a new, miniaturized injection technology. The Princeton approach relies on precise detection of the vein with the help of novel sensing methods and advanced robotic positioning systems to detect the appropriate injection site, leading to accurate and safe insertion of the needle.

Miles Cole

Miles Cole, Class of 2022. Photo by Sameer Khan/Fotobuddy

The team envisions packaging the technology in a device that patients can use to perform convenient injections at any time. Medics in remote locations, battlefields, or in the back of ambulances would be able to inject drugs and draw blood with safety and accuracy. The device has the potential to save many thousands of dollars per year by replacing surgically installed catheter devices used to deliver chemotherapy, for example. Cole is founding a startup company, Invictis Technologies, which he developed as part of the University's Keller Center eLab Summer Accelerator program.

"Working with outstanding students to transform ideas into groundbreaking technologies that can solve real-world problems is one of the most rewarding aspects of being a professor at Princeton.” – Craig Arnold

Innovator: Craig Arnold, the Susan Dod Brown Professor of Mechanical and Aerospace Engineering and Director, Princeton Institute for the Science and Technology of Materials

Co-inventor: Miles Cole, Class of 2022

Development status: Patent protection is pending. A startup company, Invictis Technologies, is developing this innovation.

Funding: Princeton Intellectual Property Accelerator Fund

Learn more:

For licensing enquiries, contact Prabhpreet Gill, Technology Licensing Associate.

Diagram showing direct intravenous injections

Invictis Technologies aims to make intravenous infusions easier via a vertical injection technology. Image provided by Miles Cole