A Robot That Finds Your Veins Better Than Humans Can

When a needle misses the mark, the consequences go beyond a bruise. Failed blood draws mean repeated sticks, patient distress, and precious clinical time lost. Now, a team at Rutgers University has built a device that might make those misses a relic of the past.

How It Works

Researchers supported by the National Institute of Biomedical Imaging and Bioengineering have developed a hand-held robot that guides itself to veins using ultrasound imaging, then draws blood with precision.

The device operates in two distinct phases. First, ultrasound scans map the vein and plot the optimal path for the needle. Then, once the draw is complete, an attached processing module takes over, spinning samples through a centrifuge-based analyzer without requiring additional handling.

Clinical Trial Results

In a clinical trial involving 31 patients, the machine matched or surpassed the performance of human technicians—both for patients with straightforward veins and those whose vessels had long frustrated phlebotomists.

The stakes are real: roughly 1.4 billion blood draws happen in the United States every year. A failed attempt is not just inconvenient—it can cause pain, complications, and delays that ripple through an already strained healthcare system.

The device could prove especially valuable for emergency responders, ICU staff, and anyone working with patients whose veins are difficult to locate.

The work appeared in the journal TECHNOLOGY, led by Martin L. Yarmush, who holds the Paul & Mary Monroe Chair in Biomedical Engineering at Rutgers. The team envisions the system eventually deployed in ambulances, emergency rooms, and clinics—anywhere reliable, rapid blood collection matters.

Based on: Development and Evaluation of an Automated Blood Drawing Robot; Rutgers University Research Team; TECHNOLOGY Journal, Date not specified.