Quantitative Assessment of Endoscope Tip Angulation Performance in New Endoscopes: A Cross-Sectional Quality...

Area of Science:

• Gastroenterology
• Medical Device Engineering
• Quality Improvement

Background:

• Endoscope tip angulation is crucial for procedural maneuverability.
• Standardized quantitative assessment of angulation is lacking.
• Data on performance degradation of new endoscopes is limited.

Purpose of the Study:

• Evaluate tip angulation in new endoscopes after clinical use.
• Characterize the prevalence and pattern of below-tolerance findings.
• Assess performance degradation by endoscope type.

Main Methods:

• Quality improvement project evaluating tip angulation of new endoscopes within 9 months of use.
• Systematic assessment by physicians using a reference chart.
• Independent evaluation by a company representative using a calibrated instrument.

Main Results:

• 32 new endoscopes (18 colonoscopes, 14 gastroscopes) were evaluated after approx. 9 months of use.
• 27.8% of colonoscopes (5/18) fell below manufacturer tolerance thresholds for tip deflection.
• All 14 gastroscopes met manufacturer tolerance thresholds.

Conclusions:

• A significant proportion of new colonoscopes degrade below performance benchmarks within 9 months.
• Objective, periodic assessment of tip angulation is necessary, even for functional endoscopes.
• Further longitudinal studies are needed to establish deterioration patterns and maintenance guidelines.