Investigation of bioinspired gecko fibers to improve adhesion of HeartLander surgical robot

HeartLander is a medical robot proposed for minimally invasive epicardial intervention on the beating heart. To date, all prototypes have used suction to gain traction on the epicardium. Gecko-foot-inspired micro-fibers have been proposed for repeatable adhesion to surfaces. In this paper, a method for improving the traction of HeartLander on biological tissue is presented. The method involves integration of gecko-inspired fibrillar adhesives on the inner surfaces of the suction chambers of HeartLander. Experiments have been carried out on muscle tissue ex vivo assessing the traction performance of the modified HeartLander with bio-inspired adhesive. The adhesive fibers are found to improve traction on muscle tissue by 57.3%.

[1]  L. Nifong,et al.  Robotic cardiac surgery. , 2003, Journal of long-term effects of medical implants.

[2]  Metin Sitti,et al.  Adhesion of biologically inspired vertical and angled polymer microfiber arrays. , 2007, Langmuir : the ACS journal of surfaces and colloids.

[3]  Jacques Gangloff,et al.  Compliant mechanisms for an active cardiac stabilizer: lessons and new requirements in the design of a novel surgical tool , 2011 .

[4]  M. Sitti,et al.  A motorized anchoring mechanism for a tethered capsule robot using fibrillar adhesives for interventions in the esophagus , 2008, 2008 2nd IEEE RAS & EMBS International Conference on Biomedical Robotics and Biomechatronics.

[5]  P. Dario,et al.  Removing vascular obstructions: a challenge, yet an opportunity for interventional microdevices , 2012, Biomedical microdevices.

[6]  Paolo Dario,et al.  Evaluation of friction enhancement through soft polymer micro-patterns in active capsule endoscopy , 2010 .

[7]  A. Crosby,et al.  Controlling polymer adhesion with "pancakes". , 2005, Langmuir : the ACS journal of surfaces and colloids.

[8]  Metin Sitti,et al.  A Legged Anchoring Mechanism for Capsule Endoscopes Using Micropatterned Adhesives , 2008, IEEE Transactions on Biomedical Engineering.

[9]  R. Full,et al.  Evidence for van der Waals adhesion in gecko setae , 2002, Proceedings of the National Academy of Sciences of the United States of America.

[10]  Marco A. Zenati,et al.  A Miniature Mobile Robot for Navigation and Positioning on the Beating Heart , 2009, IEEE Transactions on Robotics.

[11]  C.N. Riviere,et al.  Improved Traction for a Mobile Robot Traveling on the Heart , 2006, 2006 International Conference of the IEEE Engineering in Medicine and Biology Society.

[12]  Cameron N Riviere,et al.  Synchronization of epicardial crawling robot with heartbeat and respiration for improved safety and efficiency of locomotion , 2012, The international journal of medical robotics + computer assisted surgery : MRCAS.

[13]  Metin Sitti,et al.  Adhesion and anisotropic friction enhancements of angled heterogeneous micro-fiber arrays with spherical and spatula tips , 2007 .

[14]  Carlo Menon,et al.  Recent advances in the fabrication and adhesion testing of biomimetic dry adhesives , 2010 .