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Factors determining the resection ability of snares in cold snare polypectomy: Construction of an ex vivo model for accurately evaluating resection ability.
- Source :
-
Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society [Dig Endosc] 2024 May; Vol. 36 (5), pp. 573-581. Date of Electronic Publication: 2023 Sep 25. - Publication Year :
- 2024
-
Abstract
- Objectives: Cold snare polypectomy (CSP)-dedicated snares (DSs) may have a higher resection ability than conventional snares. However, a model that can accurately and objectively evaluate and compare the resection ability of each snare has yet to be determined, and characteristics of snare parts that increase resection ability remain unknown. Therefore, we elucidated DSs' resection ability and all characteristics of the parts required for acquiring high resection ability.<br />Methods: An ex vivo model for evaluating resection ability was generated using human colons obtained from forensic autopsy specimens. The force required to resect a 15 mm wide human colonic mucosa (FRR) was measured using this model; if the FRR is small, the resection ability is high. Next, after measuring the stiffness of each snare part, the correlation between the stiffness and resection ability was analyzed.<br />Results: The force required to resect using SnareMaster Plus, Micro-Tech Cold Snare, Captivator Cold, Exacto Cold Snare, or Captivator II was 13.6 ± 1.0, 12.5 ± 1.2, 7.4 ± 1.2, 6.5 ± 1.0, and 28.7 ± 3.7 N, respectively. All DSs had significantly lower FRR than the conventional snare (Captivator II) and had higher resection ability (P < 0.001). A negative correlation was found between FRR and sheath or wire spindle stiffness, with correlation coefficients of 0.72 (P = 0.042) or 0.94 (P < 0.001), respectively. Moreover, 1 × 7 type wire rings had significantly higher friction coefficients than 1 × 3 type wire rings (P < 0.002).<br />Conclusion: Sheath and wire spindle stiffness should be increased to increase resection ability; 1 × 7 type wire rings may be suitable for CSP-snare parts.<br /> (© 2023 Japan Gastroenterological Endoscopy Society.)
Details
- Language :
- English
- ISSN :
- 1443-1661
- Volume :
- 36
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society
- Publication Type :
- Academic Journal
- Accession number :
- 37682639
- Full Text :
- https://doi.org/10.1111/den.14676