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Revista chilena de obstetricia y ginecología

Print version ISSN 0048-766XOn-line version ISSN 0717-7526


ORLANDINI, Elisa; CATALAN, Cynthia; POMES, Cristián  and  CUELLO, Mauricio. Safe evacuation system for pneumoperitoneum and surgical smoke in laparoscopic surgery using a water trap in times of COVID-19. Rev. chil. obstet. ginecol. [online]. 2020, vol.85, suppl.1, pp.S67-S74. ISSN 0048-766X.


The recent SARS-CoV-2 (COVID-19) pandemics has raised concern on the incidental exposition of health team to air transmissible infectious agents during surgeries. The main goal of this work is to communicate a simple and low-cost filtering system allowing to reduce the risk of contagion related to the virus, associated with pneumoperitoneum removal during surgical laparoscopy.


A closed circuit of gas removal and filtering was developed and implemented in laparoscopic gynecologic procedures at a tertiary teaching hospital. The circuit included an HEPA (High Efficiency Particulate Air) filter and a vacuum trap containing an inactivating solution based on quaternary ammonium or sodium hypochlorite.


Since its introduction, seventeen laparoscopic surgeries have been carried out for different gynecologic pathologies. Two of them in Covid (+) cases. To date, no contagion has been reported among health teammates participating in these surgeries.


It is possible to implement a pneumoperitoneum evacuation system in laparoscopic surgery presumably effective in minimizing the risk of exposure to the SARS-COV-2 virus (Covid-19). Its low cost makes it especially recommended in developing countries.

Keywords : laparoscopy; SARS-CoV-2 (Covid-19); pneumoperitoneum; water seal trap; protective measures; safety.

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