 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13554 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8194
|
| In English (Mech. Solids): | | 5360 |
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| A.G. Kuchumov, D.V. Khoroshev, G.D. Selivanov, M.A. Seleznev, V.K. Tsilibin, A.M. Kutuzova, E.A. Barbashina, E.K. Shilova, O.V. Krestyaninov, and A.A. Baranov, "Study of Bending Stiffness of Transcatheter Aortic Valve Stents," Mech. Solids. 60 (7), 5570-5607 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
7 |
Pages |
5570-5607 |
| DOI |
10.1134/S0025654425605427 |
| Title |
Study of Bending Stiffness of Transcatheter Aortic Valve Stents |
| Author(s) |
A.G. Kuchumov (Sirius University of Science and Technology, Sirius Federal Territory, 354340 Russia; Perm National Research Polytechnic University, Perm, 614990 Russia, kychymov@inbox.ru)
D.V. Khoroshev (Perm National Research Polytechnic University, Perm, 614990 Russia)
G.D. Selivanov (Sirius University of Science and Technology, Sirius Federal Territory, 354340 Russia; Perm National Research Polytechnic University, Perm, 614990 Russia)
M.A. Seleznev (Sirius University of Science and Technology, Sirius Federal Territory, 354340 Russia; Perm National Research Polytechnic University, Perm, 614990 Russia)
V.K. Tsilibin (Perm National Research Polytechnic University, Perm, 614990 Russia)
A.M. Kutuzova (Perm National Research Polytechnic University, Perm, 614990 Russia)
E.A. Barbashina (Sirius University of Science and Technology, Sirius Federal Territory, 354340 Russia; Perm National Research Polytechnic University, Perm, 614990 Russia)
E.K. Shilova (Perm National Research Polytechnic University, Perm, 614990 Russia)
O.V. Krestyaninov (Academician E.N. Meshalkin National Medical Research Center, Novosibirsk, 630055 Russia, o_krestyaninov@meshalkin.ru)
A.A. Baranov (Academician E.N. Meshalkin National Medical Research Center, Novosibirsk, 630055 Russia) |
| Abstract |
Transcatheter aortic valve implantation (TAVI) is an innovative minimally invasive procedure designed to replace a damaged or narrowed aortic valve. One of important factor is a device selection, which means variety of stent frame types. Bending stiffness of TAVI stent frame provides an ability to withstand external deformation, when it is implanted in the aortic annulus. Patient-pecific manufacturing can solve a problem of patient-device sizing and compatibility. For customized manufacturing it is necessary to find a relation between TAVI implant design and strength to avoid postoperative complications. Nevertheless, studies of relations between structure of TAVI stents and their mechanical performance are rare. Thus, eight stent geometries (a–h) including commercial ones (a, b) and own-developed (c–h) were manufactured by filament fused fabrication. Basing on mechanical tests, features of TAVI stent frames, numerical simulations of stent deployment and bending were carried out. Three-point bending was also performed on manufactured stents. The least average value of bending stiffness was shown by models a, e, f, g (0.92–1.09 kN⋅mm2), while the greatest average value was obtained for c model (5.05 kN⋅mm2). Additionally, correlation analysis was performed. To reach bending stiffness of 6 kN⸱mm2, waist position should be 22.4 mm, parameters vertical and horizontal should be 3.4 and 8.7, respectively. The proposed study can help to choose proper TAVI stent frame design basing on demanding stiffness of aorta to provide accurate short- and long-term performance of the prothesis. |
| Keywords |
transcatheter aortic valve implantation, stent, bending stiffness, 3 point-bending |
| Received |
01 September 2025 | Revised |
16 September 2025 | Accepted |
17 September 2025 |
| Link to Fulltext |
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