An assessment of magnesium AZ31 coronary stents manufacture
AZ31 magnesium coronary stents were studied through a manufacturing process chain involving laser cutting, acid pickling, and dip coating. The purpose of this study was to evaluate surface thickness and geometrical dimensions of stents after processing. Stents were dip coated in a solution using PCL...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac16f2 |
| _version_ | 1797746893330055168 |
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| author | Mariana Nuñez-Nava Elisa Vazquez Wendy Ortega-Lara Ciro A Rodriguez Erika García-López |
| author_facet | Mariana Nuñez-Nava Elisa Vazquez Wendy Ortega-Lara Ciro A Rodriguez Erika García-López |
| author_sort | Mariana Nuñez-Nava |
| collection | DOAJ |
| description | AZ31 magnesium coronary stents were studied through a manufacturing process chain involving laser cutting, acid pickling, and dip coating. The purpose of this study was to evaluate surface thickness and geometrical dimensions of stents after processing. Stents were dip coated in a solution using PCL with 1% of TiO _2 . Additionally, AZ31 coronary stents were dynamically tested using a degradation system based on peristaltic pumps. Our results indicate that coated stents degraded slower than AZ31 uncoated control stents. After 4 weeks of dynamic degradation under flowing Hank’s solution, coated stents lost only ∼9% in weight while uncoated stents lost ∼27% in weight. Stents were qualitatively evaluated after four weeks of degradation. Our results demonstrate the formation of micro-pores after one and two weeks of degradation for coated stents. Lamination was observed after three weeks of degradation, meanwhile, uncoated stents resulted with notches and an irregular surface caused by degradation. |
| first_indexed | 2024-03-12T15:43:18Z |
| format | Article |
| id | doaj.art-949aca710e6e4c7f9026a00d53814851 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:43:18Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-949aca710e6e4c7f9026a00d538148512023-08-09T15:52:03ZengIOP PublishingMaterials Research Express2053-15912021-01-018707540310.1088/2053-1591/ac16f2An assessment of magnesium AZ31 coronary stents manufactureMariana Nuñez-Nava0Elisa Vazquez1https://orcid.org/0000-0002-1228-9636Wendy Ortega-Lara2Ciro A Rodriguez3https://orcid.org/0000-0003-2289-4239Erika García-López4https://orcid.org/0000-0002-3341-298XTecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501 Sur, Monterrey, N.L., 64849, Mexico; Laboratorio Nacional de Manufactura Aditiva y Digital MADiT, Apodaca, Nuevo León, 66628, MexicoTecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501 Sur, Monterrey, N.L., 64849, Mexico; Laboratorio Nacional de Manufactura Aditiva y Digital MADiT, Apodaca, Nuevo León, 66628, MexicoTecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501 Sur, Monterrey, N.L., 64849, MexicoTecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501 Sur, Monterrey, N.L., 64849, Mexico; Laboratorio Nacional de Manufactura Aditiva y Digital MADiT, Apodaca, Nuevo León, 66628, MexicoTecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501 Sur, Monterrey, N.L., 64849, Mexico; Laboratorio Nacional de Manufactura Aditiva y Digital MADiT, Apodaca, Nuevo León, 66628, MexicoAZ31 magnesium coronary stents were studied through a manufacturing process chain involving laser cutting, acid pickling, and dip coating. The purpose of this study was to evaluate surface thickness and geometrical dimensions of stents after processing. Stents were dip coated in a solution using PCL with 1% of TiO _2 . Additionally, AZ31 coronary stents were dynamically tested using a degradation system based on peristaltic pumps. Our results indicate that coated stents degraded slower than AZ31 uncoated control stents. After 4 weeks of dynamic degradation under flowing Hank’s solution, coated stents lost only ∼9% in weight while uncoated stents lost ∼27% in weight. Stents were qualitatively evaluated after four weeks of degradation. Our results demonstrate the formation of micro-pores after one and two weeks of degradation for coated stents. Lamination was observed after three weeks of degradation, meanwhile, uncoated stents resulted with notches and an irregular surface caused by degradation.https://doi.org/10.1088/2053-1591/ac16f2AZ31 magnesium alloyPCLdynamic degradationacid picklinglaser cutting |
| spellingShingle | Mariana Nuñez-Nava Elisa Vazquez Wendy Ortega-Lara Ciro A Rodriguez Erika García-López An assessment of magnesium AZ31 coronary stents manufacture Materials Research Express AZ31 magnesium alloy PCL dynamic degradation acid pickling laser cutting |
| title | An assessment of magnesium AZ31 coronary stents manufacture |
| title_full | An assessment of magnesium AZ31 coronary stents manufacture |
| title_fullStr | An assessment of magnesium AZ31 coronary stents manufacture |
| title_full_unstemmed | An assessment of magnesium AZ31 coronary stents manufacture |
| title_short | An assessment of magnesium AZ31 coronary stents manufacture |
| title_sort | assessment of magnesium az31 coronary stents manufacture |
| topic | AZ31 magnesium alloy PCL dynamic degradation acid pickling laser cutting |
| url | https://doi.org/10.1088/2053-1591/ac16f2 |
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