Additive Manufacturing of Biomechanically Tailored Meshes for Compliant Wearable and Implantable Devices
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Additive manufacturing (AM) of medical devices such as orthopedic implants and hearing aids is highly attractive because of the potential of AM to match the complex form and mechanics of individual human bodies. Externally worn and implantable...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021
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| Online Access: | https://hdl.handle.net/1721.1/134769 |
| _version_ | 1811081226237247488 |
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| author | Pattinson, Sebastian W Huber, Meghan E Kim, Sanha Lee, Jongwoo Grunsfeld, Sarah Roberts, Ricardo Dreifus, Gregory Meier, Christoph Liu, Lei Hogan, Neville Hart, A John |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Pattinson, Sebastian W Huber, Meghan E Kim, Sanha Lee, Jongwoo Grunsfeld, Sarah Roberts, Ricardo Dreifus, Gregory Meier, Christoph Liu, Lei Hogan, Neville Hart, A John |
| author_sort | Pattinson, Sebastian W |
| collection | MIT |
| description | © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Additive manufacturing (AM) of medical devices such as orthopedic implants and hearing aids is highly attractive because of the potential of AM to match the complex form and mechanics of individual human bodies. Externally worn and implantable tissue-support devices, such as ankle or knee braces, and hernia repair mesh, offer a new opportunity for AM to mimic tissue-like mechanics and improve both patient outcomes and comfort. Here, it is demonstrated how explicit programming of the toolpath in an extrusion AM process can enable new, flexible mesh materials having digitally tailored mechanical properties and geometry. Meshes are fabricated by extrusion of thermoplastics, optionally with continuous fiber reinforcement, using a continuous toolpath that tailors the elasticity of unit cells of the mesh via incorporation of slack and modulation of filament–filament bonding. It is shown how the tensile mesh mechanics can be engineered to match the nonlinear response of muscle. An ankle brace with directionally specific inversion stiffness arising from embedded mesh is validated, and further concepts for 3D mesh devices are prototyped. |
| first_indexed | 2024-09-23T11:43:27Z |
| format | Article |
| id | mit-1721.1/134769 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:43:27Z |
| publishDate | 2021 |
| publisher | Wiley |
| record_format | dspace |
| spelling | mit-1721.1/1347692023-03-01T15:23:20Z Additive Manufacturing of Biomechanically Tailored Meshes for Compliant Wearable and Implantable Devices Pattinson, Sebastian W Huber, Meghan E Kim, Sanha Lee, Jongwoo Grunsfeld, Sarah Roberts, Ricardo Dreifus, Gregory Meier, Christoph Liu, Lei Hogan, Neville Hart, A John Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Additive manufacturing (AM) of medical devices such as orthopedic implants and hearing aids is highly attractive because of the potential of AM to match the complex form and mechanics of individual human bodies. Externally worn and implantable tissue-support devices, such as ankle or knee braces, and hernia repair mesh, offer a new opportunity for AM to mimic tissue-like mechanics and improve both patient outcomes and comfort. Here, it is demonstrated how explicit programming of the toolpath in an extrusion AM process can enable new, flexible mesh materials having digitally tailored mechanical properties and geometry. Meshes are fabricated by extrusion of thermoplastics, optionally with continuous fiber reinforcement, using a continuous toolpath that tailors the elasticity of unit cells of the mesh via incorporation of slack and modulation of filament–filament bonding. It is shown how the tensile mesh mechanics can be engineered to match the nonlinear response of muscle. An ankle brace with directionally specific inversion stiffness arising from embedded mesh is validated, and further concepts for 3D mesh devices are prototyped. 2021-10-27T20:09:03Z 2021-10-27T20:09:03Z 2019 2020-07-17T18:49:48Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134769 en 10.1002/ADFM.201901815 Advanced Functional Materials Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Wiley Other repository |
| spellingShingle | Pattinson, Sebastian W Huber, Meghan E Kim, Sanha Lee, Jongwoo Grunsfeld, Sarah Roberts, Ricardo Dreifus, Gregory Meier, Christoph Liu, Lei Hogan, Neville Hart, A John Additive Manufacturing of Biomechanically Tailored Meshes for Compliant Wearable and Implantable Devices |
| title | Additive Manufacturing of Biomechanically Tailored Meshes for Compliant Wearable and Implantable Devices |
| title_full | Additive Manufacturing of Biomechanically Tailored Meshes for Compliant Wearable and Implantable Devices |
| title_fullStr | Additive Manufacturing of Biomechanically Tailored Meshes for Compliant Wearable and Implantable Devices |
| title_full_unstemmed | Additive Manufacturing of Biomechanically Tailored Meshes for Compliant Wearable and Implantable Devices |
| title_short | Additive Manufacturing of Biomechanically Tailored Meshes for Compliant Wearable and Implantable Devices |
| title_sort | additive manufacturing of biomechanically tailored meshes for compliant wearable and implantable devices |
| url | https://hdl.handle.net/1721.1/134769 |
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