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Mechanisms of cutting soft tissues using snare-type tools
Jinghang Wang1, Urara Satake1, Toshiyuki Enomoto1
1Division of Mechanical Engineering, Graduate School of Engineering, Osaka University, 2-1, Yamada-oka, Suita, Osaka, 565-0871, Japan.
Medical Engineering & Physics
|April 3, 2025
Summary
Cold snare polypectomy (CSP) cutting failure is linked to submucosa tissue properties. Optimizing cutting speed and snare design can improve polyp resection efficacy and safety.
Area of Science:
- Gastroenterology
- Biomedical Engineering
- Surgical Technology
Background:
- Cold snare polypectomy (CSP) is standard for small colonic polyps.
- Incomplete resection due to cutting failure necessitates improved snare technology.
Purpose of the Study:
- Investigate cold snare cutting mechanisms.
- Analyze the impact of cutting speed and snare properties on cutting force.
Main Methods:
- Examined cutting forces during CSP.
- Evaluated effects of varying cutting speeds.
- Assessed influence of different snare wire properties.
Main Results:
- Internal tissue fractures precede external tissue fracture during CSP.
- Higher cutting speeds and thinner snares reduce cutting force.
- Submucosa tissue toughness causes defect protrusions and impedes fracture.
Conclusions:
- Understanding soft tissue fracture mechanics is key for CSP optimization.
- Findings offer insights for designing improved snare tools.
- Optimized tools can enhance polyp resection safety and effectiveness.
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