MIT builds soft robotic benchtop model of left atrium, validated on human imaging and porcine data
MIT researchers paired a soft robotic left atrial simulator with a lumped parameter model of atrial fibrillation; both were validated against human imaging and porcine models.
A team at the Massachusetts Institute of Technology led by Ellen T. Roche has developed a soft robotic benchtop simulator of the left atrium and a matching lumped parameter computational model. The work was published on 7 November 2026 in Nature Communications. nature.com
Nature Communicationsnature.comOpen source ↗ Co-authors come from the Wyss Institute at Harvard, Massachusetts General Hospital, Beth Israel Deaconess Medical Center, Cedars-Sinai Medical Center, Pulse Heart Institute and Universitat Pompeu Fabra in Barcelona.
The models address atrial fibrillation, where the complex geometry of the left atrial appendage complicates personalized interventions for stroke prevention. The authors point out that current work relies on animals and cadavers, which raises reproducibility concerns and creates a need for high-fidelity, physiologically relevant tools.
Benchtop simulator and computational model
The simulator integrates patient-specific geometries with soft robotic actuators to reproduce realistic wall motion and hemodynamics of the left atrium. Carbon, Inc. supplied 3D-printed patient-specific left atrial and ventricular models for the work.
The second component is a lumped parameter model. According to the authors, it provides mechanistic insight and quantifies systemic hemodynamic changes during disease and during interventions. nature.com
Nature Communicationsnature.comOpen source ↗ Together, the simulator and the model form a multimodal framework, as the paper describes it.
Validation against imaging and porcine models
The authors report that both models replicate clinical markers of atrial dysfunction and arrhythmia disorders. Their accuracy was checked against human imaging and porcine models. The animal study was carried out with the Division of Comparative Medicine at MIT, and Philips Research loaned echocardiography equipment.
The authors describe the framework as scalable and versatile, and as a contribution to cardiovascular biomechanics. They say it enables device development, clinical research and training, and personalized treatment of atrial fibrillation. The validation reported covers a benchtop system, a computational model, human imaging and porcine models.
