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Bilateral Internal Thoracic Artery Harvesting With A Novel Single-port Robotic System: An Experimental Feasibility Study
Jiamiao GONG, Jiexu MA, Sheng LIU, Zhe ZHENG.
National Center for Cardiovascular Diseases and Fuwai Hospital, Beijing, China.

BACKGROUND: We conducted this study to investigate the feasibility of harvesting the bilateral internal thoracic arteries using a novel single-port robotic system through a single left-side intercostal incision.
METHODS: We harvested bilateral internal thoracic arteries from 4 live porcine via a single incision made in the fourth intercostal space. One procedure was performed by senior robotically trained surgeon and the remaining surgeries by junior novice robotic surgeon.
RESULTS: Creating the intercostal access and docking the single-port robotic system took between 16 and 40 min and the total harvest time ranged from 70 to 145 min in all models. The average length of the bilateral internal thoracic arteries was 12.0±2.0 cm and 8.9±2.6 cm. No major bleeding was observed and no cardiac arrythmia occurred during surgery.
CONCLUSIONS: Bilateral internal thoracic artery harvest using the novel single-port robotic system through a single intercostal incision was technically easily reproduced by the surgeons. Further clinical trials will be required to assess true clinical benefits in patients.

Results
PorcineWeightSet-up timeLITA harvestRITA harvestTotal harvestLITA lengthRITA length
150 kg40 min40 min30 min70 min9.0 cm5.0 cm
271 kg20 min75 min70 min145 min13.5 cm10.0cm
372 kg16 min80 min55 min135 min13.0 cm10.0cm
470 kg23 min55 min45 min100 min12.5cm10.5 cm


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