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Related Experiment Video

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Evaluation of a Novel Laser-assisted Coronary Anastomotic Connector - the Trinity Clip - in a Porcine Off-pump Bypass Model
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Catheter-based endoscopic bypass grafting: an experimental feasibility study.

Stephan Jacobs1, David Holzhey, Hubert Stein

  • 1Department of Cardiac Surgery, Heartcenter, University of Leipzig, Leipzig, Germany. stjacobs@aol.com

The Annals of Thoracic Surgery
|October 24, 2007
PubMed
Summary

A novel catheter-guided technique enables endoscopic coronary artery bypass grafting. This method, using glue and a catheter, shows promise for beating heart total endoscopic coronary artery bypass procedures.

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Area of Science:

  • Cardiovascular Surgery
  • Minimally Invasive Procedures
  • Biomedical Engineering

Background:

  • Coronary artery bypass grafting (CABG) is a standard treatment for severe coronary artery disease.
  • Total endoscopic coronary artery bypass (TECAB) offers potential benefits but faces challenges in anastomosis construction.
  • Current methods for anastomosis require precise surgical skills and can be time-consuming.

Purpose of the Study:

  • To develop and evaluate a novel endoscopic, catheter-guided, bonded anastomosis technique.
  • To facilitate total endoscopic coronary artery bypass (TECAB) on a beating heart.
  • To assess the feasibility and preliminary outcomes of this innovative approach.

Main Methods:

  • Total endoscopic coronary artery bypass (TECAB) was performed in six pigs using a telemanipulation system.
  • An angioplasty catheter was used to stabilize the anastomosis site within the left internal thoracic artery (LITA) and left anterior descending (LAD) coronary artery.
  • A glue-based bonding technique was applied externally for anastomosis construction while the catheter maintained vessel patency.

Main Results:

  • Anastomosis construction was achieved rapidly, averaging 3.5 minutes.
  • Graft site angiography and catheter placement took an average of 12 minutes.
  • Adverse events included anastomotic leakage and LAD dissection; 5 out of 6 animals demonstrated graft patency, with one surviving with an open graft and anastomosis.

Conclusions:

  • Catheter-based endoscopic bypass grafting is a feasible technique.
  • The combination of robotic technology and this simple bonding method may enhance beating heart TECAB.
  • This approach holds potential for simplifying and improving TECAB procedures.