Indigo Carmine PEG Oral Composition for Colonoscopy Staining
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Solution Overview
Problem
Current chromoendoscopy methods for colon cancer screening are cumbersome and time-consuming, leading to suboptimal polyp detection rates due to inadequate staining of the gastrointestinal tract, particularly with traditional oral administration of indigo carmine, which does not provide sufficient enhancement for lesion detection.
Innovation Solution
A pharmaceutical composition comprising indigo carmine mixed with polyethylene glycol (PEG) is orally administered, either in one or two sessions before an endoscopic procedure, to enhance staining of the alimentary and gastrointestinal tracts, allowing for improved visualization of colonic lesions without the need for time-consuming dye spraying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional oral indigo carmine administration is used, then the procedure is simple to administer, but the staining enhancement is insufficient for polyp detection
Solution Approach 1:
The patent combines indigo carmine dye with polyethylene glycol (PEG) solution into a single preparatory composition that is administered orally before colonoscopy. This merging eliminates the need for separate dye spraying procedures during the endoscopic examination, thereby improving polyp detection rates while maintaining procedural simplicity.
Solution Approach 2:
The indigo carmine and PEG solution is administered orally in advance (prior to the colonoscopy procedure) to pre-stain the gastrointestinal tract. This preliminary staining action allows for enhanced polyp detection during the subsequent endoscopic examination without requiring time-consuming dye spraying during the procedure itself.
2Measurement precision
If direct chromoendoscopy with dye spraying is performed, then polyp detection sensitivity is improved, but the procedure becomes time-consuming and cumbersome
Solution Approach 1:
The patent administers indigo carmine dye orally in advance before the colonoscopy procedure, allowing the gastrointestinal tract to be pre-stained prior to endoscopic examination. This eliminates the need for time-consuming dye spraying during the procedure while maintaining high lesion detection sensitivity.
Solution Approach 2:
The patent extracts the dye spraying step from the colonoscopy procedure by administering the dye orally beforehand. This separation removes the cumbersome and time-consuming spraying operation from the main procedure, thereby improving procedural efficiency while preserving diagnostic accuracy.
3Measurement precision
If oral indigo carmine capsule or powder is administered, then the administration is convenient, but the staining effect is insufficient to improve polyp detection rate
Solution Approach 1:
The patent uses a composite formulation of indigo carmine dye combined with polyethylene glycol (PEG) solution. This composite material provides both the staining properties of indigo carmine and the carrier properties of PEG, enabling convenient oral administration while achieving sufficient staining enhancement for improved polyp detection rates.
Solution Approach 2:
The patent changes the physical form of indigo carmine from capsule or powder to a dissolved solution form combined with PEG. This parameter change in the dye's physical state improves its solubility, distribution, and staining effectiveness in the gastrointestinal tract while maintaining oral administration convenience.
Data Source
AI summary
Indirect chromoendoscopy is performed by providing a subject with an orally administered composition which includes indigo carmine dye mixed with polyethylene glycol (PEG). Preferably, the subject ingests at least 160 mg of indigo carmine prior to the endoscopic procedure. This is accomplished by ingesting 1 ml to 6 L of a premixed or reconstituted indigo carmine and PEG composition up to twenty four hours prior to the endoscopic procedure.