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Published in: Surgical Endoscopy 9/2023

Open Access 13-07-2023 | Dynamic Manuscript

The influence of prolonged instrument manipulation on gas leakage through trocars

Authors: Daniel Robertson, Matthijs van Duijn, Alberto Arezzo, Yoav Mintz, Tim Horeman-Franse, Technology Committee of the EAES

Published in: Surgical Endoscopy | Issue 9/2023

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Abstract

Background

During laparoscopic surgery, CO2 insufflation gas could leak from the intra-abdominal cavity into the operating theater. Medical staff could therefore be exposed to hazardous substances present in leaked gas. Although previous studies have shown that leakage through trocars is a contributing factor, trocar performance over longer periods remains unclear. This study investigates the influence of prolonged instrument manipulation on gas leakage through trocars.

Methods

Twenty-five trocars with diameters ranging from 10 to 15 mm were included in the study. An experimental model was developed to facilitate instrument manipulation in a trocar under loading. The trocar was mounted to a custom airtight container insufflated with CO2 to a pressure of 15 mmHg, similar to clinical practice. A linear stage was used for prolonged instrument manipulation. At the same time, a fixed load was applied radially to the trocar cannula to mimic the reaction force of the abdominal wall. Gas leakage was measured before, after, and during instrument manipulation.

Results

After instrument manipulation, leakage rates per trocar varied between 0.0 and 5.58 L/min. No large differences were found between leakage rates before and after prolonged manipulation in static and dynamic measurements. However, the prolonged instrument manipulation did cause visible damage to two trocars and revealed unintended leakage pathways in others that can be related to production flaws.

Conclusion

Prolonged instrument manipulation did not increase gas leakage rates through trocars, despite damage to some individual trocars. Nevertheless, gas leakage through trocars occurs and is caused by different trocar-specific mechanisms and design issues.
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Metadata
Title
The influence of prolonged instrument manipulation on gas leakage through trocars
Authors
Daniel Robertson
Matthijs van Duijn
Alberto Arezzo
Yoav Mintz
Tim Horeman-Franse
Technology Committee of the EAES
Publication date
13-07-2023
Publisher
Springer US
Published in
Surgical Endoscopy / Issue 9/2023
Print ISSN: 0930-2794
Electronic ISSN: 1432-2218
DOI
https://doi.org/10.1007/s00464-023-10240-5

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