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. 2020 May 30:opaa168. doi: 10.1093/ons/opaa168

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Copyright © 2020 by the Congress of Neurological Surgeons

This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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FIGURE 4. — A 12-mm laparoscopic surgery trocar cut transversely 1.5 cm from its base A and B. The end of surgical suction tubing cut to adapt the trocar tip C. The end of surgical tubing modified and attached to the distal end of the trocar with the purpose of creating a seal at the nostril. The trocar has an incorporated suction port with the function of suctioning droplets and debris mainly for the passage of powered instrumentation, particularly the high-speed drill D.