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CC BY 4.0 · Endosc Int Open 2025; 13: a27522380
DOI: 10.1055/a-2752-2380
Original article

Enhancing emergency endoscopy efficiency with an additional suction channel: In vitro assessment

Authors

  • André Sasse 

    1   Clinic for Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Thomas Roland Heiduk

    1   Clinic for Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Marvin Scheunemann

    2   High Precision Components Witten GmbH, Witten, Germany

  • Lukas Hiebel

    1   Clinic for Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Richard F Knoop 

    1   Clinic for Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Marius Adler

    3   Avelios Medical GmbH, Munich, Germany

  • Ali Seif Amir Hosseini

    4   Department of Clinical and Interventional Radiology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Edris Wedi

    5   Division of Gastroenterology, Gastrointestinal Oncology and Interventional Endoscopy, Sana Clinic Offenbach, Offenbach, Germany
    1   Clinic for Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Imke Amanzada

    6   Department of Psychiatry and Psychotherapy, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Volker Ellenrieder

    1   Clinic for Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Golo Petzold

    1   Clinic for Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)

  • Ahmad Amanzada

    1   Clinic for Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany (Ringgold ID: RIN27177)
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Abstract

Background and study aims

Emergency endoscopic interventions for upper gastrointestinal hemorrhage are frequently hampered by presence of blood clots and food debris. This study aimed to assess whether integration of an additional suction channel (ASC) onto a standard gastroscope enhances efficiency of aspirating clots and viscous fluids.

Patients and methods

A 5.3-mm suction catheter was used as an ASC mounted on a 2.8-mm standard gastroscope. Suction efficacy was evaluated using gastroscopes with working channel diameters of 2.8 mm, 3.7 mm, and 6 mm in vitro. Defined volumes of water, fruit yogurt, and coagulated blood were aspirated, and time required for complete evacuation was measured. Each setup was tested with and without the BioVac system.

Results

The ASC significantly enhanced suction performance across all test media. Notably, the 2.8-mm gastroscope with ASC outperformed all other configurations in aspirating water and yogurt. For clotted blood, the ASC significantly improved evacuation times compared with all other setups besides 6-mm + BioVac.

Conclusions

A standard gastroscope equipped with an ASC significantly enhances suction performance in an in vitro model, outperforming gastroscopes with larger working channels. These findings warrant further validation in an ex vivo model to determine their clinical applicability.

Keywords

Endoscopy Upper GI Tract - Non-variceal bleeding - Portal hypertension and variceal bleeding - Quality and logistical aspects - Performance and complications


Publication History

Received: 21 April 2025

Accepted after revision: 14 October 2025

Article published online:
09 December 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).

Georg Thieme Verlag KG
Oswald-Hesse-Straße 50, 70469 Stuttgart, Germany

Bibliographical Record
André Sasse, Thomas Roland Heiduk, Marvin Scheunemann, Lukas Hiebel, Richard F Knoop, Marius Adler, Ali Seif Amir Hosseini, Edris Wedi, Imke Amanzada, Volker Ellenrieder, Golo Petzold, Ahmad Amanzada. Enhancing emergency endoscopy efficiency with an additional suction channel: In vitro assessment. Endosc Int Open 2025; 13: a27522380.
DOI: 10.1055/a-2752-2380
 

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