Escape of surgical smoke particles, comparing conventional and valveless trocar systems.

"Declarations DisclosuresMr Frank Sterke and Mr Willem van Weteringen are employees of Spatium Medical B.V., an academic spin-off company which develops insufflation devices for minimal access surgery. Mr Daniel Robertson, Frank Sterke, Willem van Weteringen, Dr Alberto Arezzo, Dr Yoav Mintz, and Dr Tim Horeman have no conflicts of interest or financial ties to disclose. Disclosures Mr Frank Sterke and Mr Willem van Weteringen are employees of Spatium Medical B.V., an academic spin-off company which develops insufflation devices for minimal access surgery. Mr Daniel Robertson, Frank Sterke, Willem van Weteringen, Dr Alberto Arezzo, Dr Yoav Mintz, and Dr Tim Horeman have no conflicts of interest or financial ties to disclose. "

"Funding This study was funded by the TU Delft Covid-19 Response Fund and the Covid-19 Fund of the European Association for Endoscopic Surgery (EAES)."