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Related Experiment Videos

Experimental off-pump coronary bypass using a robotic telemanipulation system.

Marco A Zenati1, Larry Nichols, Gianluca Bonanomi

  • 1Division of Cardiothoracic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213-2582, USA. zenatim@msx.upmc.edu

Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery
|November 28, 2002
PubMed
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Robotic surgery enables high-quality off-pump coronary artery bypass grafting. This study demonstrates successful left internal thoracic artery to left anterior descending coronary artery anastomosis using robotic telemanipulation and endoscopic stabilization.

Area of Science:

  • Cardiovascular Surgery
  • Medical Robotics
  • Minimally Invasive Procedures

Background:

  • Coronary artery bypass grafting (CABG) is a standard treatment for coronary artery disease.
  • Off-pump CABG aims to reduce complications associated with cardiopulmonary bypass.
  • Robotic systems offer potential for enhanced precision in minimally invasive cardiac surgery.

Purpose of the Study:

  • To evaluate the feasibility and quality of constructing an anastomosis between the left internal thoracic artery (LITA) and the left anterior descending (LAD) coronary artery.
  • To assess the efficacy of a 4-degrees-of-freedom robotic telemanipulation system combined with endoscopic myocardial stabilization for off-pump CABG.
  • To determine the safety and patency of robotic-assisted LITA-LAD anastomosis in a preclinical model.

Main Methods:

Related Experiment Videos

  • A robotic off-pump coronary bypass model was utilized in nine swine.
  • A 4-degrees-of-freedom robotic telemanipulation system, endoscopic myocardial stabilization, and 2D visualization were employed.
  • Anastomosis quality was assessed via angiography, flow analysis, survival studies, and histopathology.

Main Results:

  • All nine LITA-LAD anastomoses were successfully completed robotically off-pump in an average of 22 minutes.
  • Achieved LITA flow was 21.6 ml/min with a diastolic dominant pattern.
  • Angiographic patency was 100% (Fitzgibbon grade A), and 89% of animals survived 60 minutes post-ligation of the LAD, with favorable histopathology.

Conclusions:

  • High-quality LITA-LAD anastomosis can be achieved off-pump using robotic telemanipulation and endoscopic stabilization.
  • The demonstrated technique shows promise for robotic endoscopic off-pump CABG.
  • Further research is warranted to advance robotic technology for clinical application in CABG.