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A miniature cable-driven robot for crawling on the heart.

N A Patronik¹, M A Zenati, C N Riviere

¹The Robotics Institute, Carnegie Mellon University, Pittsburgh, PA, USA.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference

|February 7, 2007

Summary

A novel cable-driven robot navigates beating hearts for therapy delivery, eliminating the need for mechanical stabilization and lung deflation during cardiac surgery. This advancement offers enhanced mobility and visual feedback for minimally invasive procedures.

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Area of Science:

Robotics
Biomedical Engineering
Minimally Invasive Surgery

Background:

Traditional minimally invasive cardiac surgery requires mechanical stabilization and lung deflation.
Previous cardiac robots had limited mobility due to stiff wire transmissions and fiber optic cameras.

Purpose of the Study:

To design and test a new cable-driven robot for cardiac therapy administration on a beating heart.
To improve robot mobility and visual feedback for enhanced surgical capabilities.

Main Methods:

Developed a cable-driven robot actuated by two antagonistic cable pairs.
Integrated a color CCD camera for improved visual feedback.
Conducted in vitro testing using a poultry model.

Main Results:

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The new prototype demonstrated superior mobility compared to previous versions.
Enhanced visual feedback was achieved through the integrated CCD camera.
Successfully demonstrated prehension, locomotion, and tissue dye injection capabilities.

Conclusions:

The cable-driven robot design effectively overcomes limitations of previous cardiac robots.
This technology offers a promising alternative for minimally invasive cardiac therapy delivery without cardiopulmonary bypass.
Further development could lead to advanced robotic solutions for beating-heart surgery.