heart of gold
Houston innovation team wins global award for painless heart technology
Houston's Texas Heart Institute's pain-free defibrillation technology was named the top future medical product design worldwide last month as part of the annual Create the Future Design contest.
The tiny technology aims to change the way cardiac arrhythmias are managed and remove the often traumatizing pain associated with their treatment. Developed by THI's Electrophysiology Clinical Research & Innovations team in conjunction with scientists at Rice University and UCLA, the technology allows doctors to place up to 12 tiny nodes around the heart to pace and defibrillate the heart without using a shock.
The technology will be most useful for atrial fibrillation and ventricular fibrillation, which can lead to sudden death, stroke, and congestive heart failure, according to Dr. Mehdi Razavi, the head investigator on this project and leader of the THI team. Razavi says winning the award "speaks to the need" of a new solution in the field as the shocks associated with traditional implantable cardioverter-defibrillators, or ICDs, can cause severe PTSD among patients.
"It's extremely painful. It's like someone takes a two by four and just pounds you from the inside in the chest, or a horse kicking you in the chest," Razavi says. He went on to add: "I have actually one patient who was a Vietnam veteran. He said nothing that he faced in battle was as disconcerting—not just because of the pain, but the fact that you don't know when the pain is when the shock is about to happen. That anxiety is just overwhelming."
Instead of shocking the patient's heart in a central location, the nodes spread energy needed to pace the heart at the correct rate throughout the muscle based on their location. This dilutes the feeling of a sudden jolt, and Razavi says, defibrillation using his technology could go unnoticed in patients.
In addition to this game-changing possibility, the new technology is physically safer in many ways, too. The miniaturized battery-less pacing system is free of traditional wires that send electrical pulses to the heart, known as leads. These leads can dislodge and fracture within the body and can cause infection.
The technology's wireless and miniature nature also allows doctors to better access regions of the heart that currently are difficult to reach with bulkier ICDs. Each node can be individually programmed and can stimulate different regions of the heart in different ways, as well.
A cross disciplinary team developed the device. Aydin Babakhani, an associate professor in physical and wave electronics at UCLA first developed the nodes to stimulate electricity for non-medical purposes. Behnaam Aazhang, the J.S. Abercrombie Professor of Electrical and Computer Engineering and the Director of the Rice Neuroengineering Initiative, first introduced Razavi to Babakhani, and the trio worked together to bring the technology to the medical arena, along with about 15 to 20 other medical professionals and students.
The team at Rice is continuing to develop the hardware for clinical use. And studies on the use of defibrillation through these nodes across the heart are being conducted out to the Texas Heart Institute's research lab. Razavi and his team are currently conducting preclinical studies on the new form of treatment and aims to roll it out for clinical use in the next three to five years.