Volume 12, Issue 9 e9461
CASE VIDEO
Open Access

Usefulness of unwinding the colonoscope shaft loop via the universal cord for colorectal endoscopic resections

Taiji Yoshimoto

Corresponding Author

Taiji Yoshimoto

Department of Gastroenterology, Musashino Tokushukai Hospital, Tokyo, Japan

Correspondence

Taiji Yoshimoto, Department of Gastroenterology, Musashino Tokushukai Hospital, 3-5-48, Mukodaicho, Nishitokyo-shi, Tokyo 188-0013, Japan.

Email: [email protected]

Contribution: Conceptualization, Resources, Supervision, Writing - original draft, Writing - review & editing

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Hiroshi Takihara

Hiroshi Takihara

Department of Gastroenterology, Uji Tokushukai Hospital, Uji, Kyoto, Japan

Contribution: Conceptualization, Supervision, Writing - review & editing

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Ryuichi Yamamoto

Ryuichi Yamamoto

Department of Gastroenterology, Tokyo-west Tokushukai Hospital, Tokyo, Japan

Contribution: Conceptualization, Resources

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First published: 20 September 2024

Key Clinical Message

The colonoscope shaft loop can be unwound by establishing a loop in the universal cord of the colonoscope to maintain the same endoscopic view during colorectal endoscopic resections.

1 INTRODUCTION

Endoscopists must rotate the endoscope to bring the lesion closer to the forceps hole (typically in a 5–6 o'clock direction) while performing endoscopic colorectal resections.1, 2 During this process, a loop is sometimes created in the colonoscope shaft and the endoscopist's hands frequently need to maintain the loop to keep the same endoscopic view, making free hand movement difficult.

Unwinding the colonoscope shaft loop via the universal cord can be used for colorectal endoscopic treatment, such as colorectal endoscopic resections, because it frees the endoscopist's hands while maintaining the same endoscopic view during colorectal endoscopic resections (Figure 1, Video 1).

Details are in the caption following the image
Colonic polypectomy case depicting the unwinding usage of the colonoscope shaft loop via the universal cord. Polyp of macroscopic type 0–Is, 5 mm in size, and located in the proximal ascending colon; arrow indicates the polyp. (A) Endoscope must be rotated counterclockwise to bring the polyp to the 5 o'clock direction, restricting the endoscopist's hand movement. (B) After unwinding the colonoscope shaft loop via the universal cord, the polyp remains in the 5 o'clock direction; however, the endoscope returns to a neutral position, enabling free hand movement.
Colonic polypectomy case using the unwinding of the colonoscope shaft loop via the universal cord.

AUTHOR CONTRIBUTIONS

Taiji Yoshimoto: Conceptualization; resources; supervision; writing – original draft; writing – review and editing. Hiroshi Takihara: Conceptualization; supervision; writing – review and editing. Ryuichi Yamamoto: Conceptualization; resources.

ACKNOWLEDGMENTS

We thank the Japan Endoscopy Team for their great support.

    FUNDING INFORMATION

    No funding was received.

    CONFLICT OF INTEREST STATEMENT

    The authors have no conflicts of interest to declare.

    CONSENT

    Written informed consent was obtained from the patient to publish this report in accordance with the journal's patient consent policy.

    DATA AVAILABILITY STATEMENT

    The data that support the findings of this study are available from the corresponding author upon reasonable request.

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