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Evaluation of the mechanical properties of current biliary selfexpandable metallic stents: axial and radial force, and axial force zero border.
- Source :
- Clinical Endoscopy; Sep2023, Vol. 56 Issue 5, p633-649, 17p
- Publication Year :
- 2023
-
Abstract
- Background/Aims: Mechanical properties (MPs) and axial and radial force (AF and RF) may influence the efficacy and complications of self-expandable metallic stent (SEMS) placement. We measured the MPs of various SEMSs and examined their influence on the SEMS clinical ability. Methods: We evaluated the MPs of 29 types of 10-mm SEMSs. RF was measured using a conventional measurement device. AF was measured using the conventional and new methods, and the correlation between the methods was evaluated. Results: A high correlation in AFs was observed, as measured by the new and conventional manual methods. AF and RF scatterplots divided the SEMSs into three subgroups according to structure: hook-and-cross-type (low AF and RF), cross-type (high AF and low RF), and laser-cut-type (intermediate AF and high RF). The hook-and-cross-type had the largest axial force zero border (>20°), followed by the laser-cut and cross types. Conclusions: MPs were related to stent structure. Hook-and-cross-type SEMSs had a low AF and high axial force zero border and were considered safest because they caused minimal stress on the biliary wall. However, the increase in RF must be overcome. [ABSTRACT FROM AUTHOR]
- Subjects :
- SCATTER diagrams
RADIO frequency therapy
CHOLESTASIS
Subjects
Details
- Language :
- English
- ISSN :
- 22342400
- Volume :
- 56
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Clinical Endoscopy
- Publication Type :
- Academic Journal
- Accession number :
- 172928315
- Full Text :
- https://doi.org/10.5946/ce.2022.201