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Split Overtube Prevents Loop Formation During Colonoscopy

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Published March 26th, 2026
Detected March 30th, 2026
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Summary

USPTO published patent application US20260083313A1 for a split overtube device designed to prevent loop formation during colonoscopy. The device features a longitudinal split allowing placement over an endoscope shaft during an ongoing procedure. Invented by Rafal Sadurski, the overtube uses segmented oval openings and a fastening mechanism to create a semi-rigid conduit that translates axial force into forward endoscope movement without dangerous loop formation.

What changed

USPTO published patent application US20260083313A1 on March 26, 2026, disclosing an invention by Rafal Sadurski for a split overtube to prevent loop formation during colonoscopy. The device is a plastic overtube with a longitudinal split that can be placed over the endoscope shaft when a loop has already formed, hindering further insertion. Key features include segmented oval openings to facilitate placement and optimal length selection, and a fastening mechanism to secure the overtube on the endoscope shaft. The overtube provides a semi-rigid conduit that translates the operator's axial force into forward movement of the endoscope tip, eliminating dangerous loop formation. Application number 18893733 was filed September 23, 2024.

This patent publication does not create regulatory obligations or compliance deadlines. Medical device manufacturers developing colonoscopy accessories should review the claims to assess potential freedom-to-operate implications. Healthcare providers performing colonoscopy procedures may benefit from awareness of emerging technologies addressing loop formation. No immediate action is required as this represents an early-stage publication.

Source document (simplified)

← USPTO Patent Applications

Split Overtube to Prevent Looping During Colonoscopy

Application US20260083313A1 Kind: A1 Mar 26, 2026

Inventors

Rafal Sadurski

Abstract

The invention is a device that improves safety and efficiency of colonoscopy by preventing loop formation. It is the plastic overtube with the longitudinal split. The split allows the placement over the shaft of the endoscope when colonoscopy is already in progress and a loop is formed that hinders the further endoscope insertion. The overtube is segmented by oval openings of the split to facilitate placement and to allow using optimal lengths of the overtube. The fastening mechanism is used to close and secure the overtube on the shaft of the endoscope and then it is pushed inside the colon by sliding over the endoscope. Once in place, the overtube is kept steady and provides the semi-rigid conduit for further endoscope insertion. This conduit permits the axial force exerted by the operator to be translated to forward movement of the endoscope tip and eliminates dangerous loop formation.

CPC Classifications

A61B 1/31 A61B 1/00135

Filing Date

2024-09-23

Application No.

18893733

View original document →

Classification

Agency
USPTO
Published
March 26th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Draft
Change scope
Minor
Document ID
US20260083313A1

Who this affects

Applies to
Medical device makers Healthcare providers
Industry sector
3345 Medical Device Manufacturing 6211 Healthcare Providers
Activity scope
Medical Device Patent Filing
Geographic scope
United States US

Taxonomy

Primary area
Healthcare
Operational domain
Legal
Topics
Medical Devices Healthcare

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