Researchers at the McCormick School of Engineering are part of a team that has used stretchable electronics to create a multipurpose medical catheter that can both monitor heart functions and perform corrections on heart tissue during surgery.
The device marks the first time stretchable electronics have been applied to a surgical process known as cardiac ablation, a milestone that could lead to simpler surgeries for arrhythmia and other heart conditions. The researchers had previously demonstrated the concept to apply stretchable electronics to heart surgery, but with this research improved the design's functionality to the point that it could be utilized in animal tests.
Researchers utilized stretchable electronics to create a catheter to make cardiac ablation simpler.
A paper describing the research, "Electronic Sensor and Actuator Webs for Large-Area Complex Geometry Cardiac Mapping and Therapy," was published November 12 in the Proceedings of the National Academy of Sciences.
Cardiac ablation is a surgical technique that corrects heart rhythm irregularities by destroying specific heart tissue that triggers irregular heartbeats. The procedure is typically performed either with open-heart surgery or by inserting a series of long, flexible catheters through a vein in the patient's groin and into his heart.
Currently this catheter method requires the use of three different devices, which are inserted into the heart in succession: one to map the heart's signals and detect the problem area, a second to control positions of therapeutic actuators and their contact with the epicardium, and a third to burn the tissue away.
"Our catheter replaces all three devices previously needed for cardiac ablation therapy, making the surgery faster, simpler, and with a lower risk of complication," said Yonggang Huang, Joseph Cummings Professor of Civil and Environmental Engineering and Mechanical Engineering at McCormick.