In Vitro Clot Trapping Efficiency of the FDA Generic Inferior Vena Cava Filter in an Anatomical Model: An Experimental Fluid-Structure Interaction Benchmark
| Autor: | Keefe B. Manning, N. S. Price, Bryan C. Good, H. M. Saaid, Brent A. Craven, Kenneth I. Aycock, J. M. Riley |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Vena Cava Filters 0206 medical engineering Biomedical Engineering Ivc filter Inferior vena cava filter 02 engineering and technology Trapping 030204 cardiovascular system & hematology Inferior vena cava 03 medical and health sciences 0302 clinical medicine Fluid–structure interaction medicine Animals Vein Internal flow Models Cardiovascular Thrombosis 020601 biomedical engineering Benchmarking medicine.anatomical_structure medicine.vein Bovine blood cardiovascular system Cattle Cardiology and Cardiovascular Medicine Rheology circulatory and respiratory physiology Biomedical engineering |
| Zdroj: | Cardiovascular engineering and technology. 12(3) |
| ISSN: | 1869-4098 |
| Popis: | Robust experimental data for performing validation of fluid–structure interaction (FSI) simulations of the transport of deformable solid bodies in internal flow are currently lacking. This in vitro experimental study characterizes the clot trapping efficiency of a new generic conical-type inferior vena cava (IVC) filter in a rigid anatomical model of the IVC with carefully characterized test conditions, fluid rheological properties, and clot mechanical properties. Various sizes of spherical and cylindrical clots made of synthetic materials (nylon and polyacrylamide gel) and bovine blood are serially injected into the anatomical IVC model under worst-case exercise flow conditions. Clot trapping efficiencies and their uncertainties are then quantified for each combination of clot shape, size, and material. Experiments reveal the clot trapping efficiency increases with increasing clot diameter and length, with trapping efficiencies ranging from as low as approximately 42% for small 3.2 mm diameter spherical clots up to 100% for larger clot sizes. Because of the asymmetry of the anatomical IVC model, the data also reveal the iliac vein of clot origin influences the clot trapping efficiency, with the trapping efficiency for clots injected into the left iliac vein up to a factor of 7.5 times greater than that for clots injected into the right iliac (trapping efficiencies of approximately 10% versus 75%, respectively). Overall, this data set provides a benchmark for validating simulations predicting IVC filter clot trapping efficiency and, more generally, low-Reynolds number FSI modeling. |
| Databáze: | OpenAIRE |
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