| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Next Generation Biomaterials
|
| Presentation Title |
Digital Light Processing-based Additive Manufacturing of Medical Devices |
| Author(s) |
R Jay Sachan, Roger Narayan |
| On-Site Speaker (Planned) |
R Jay Sachan |
| Abstract Scope |
Polytetrafluoroethylene is finding growing use in many types of medical devices due to its heat resistance and bioinertness. Processing of polytetrafluoroethylene into medical devices is complicated by the fact that it exhibits a glass transition temperature of 185 degrees Celsius. This presentation will consider the processing of arrays of solid microneedles
(https://doi.org/10.1557/s43579-021-00121-0) and hollow needles (https://doi.org/10.1007/s11837-021-04978-3) made of polytetrafluoroethylene by digital light processing (DLP)-based additive manufacturing. Confocal laser scanning microscopy was used to assess the dimensions of the medical devices. Raman spectroscopy and X-ray photoelectron spectroscopy were used to evaluate the chemical bonding and composition of the medical devices, respectively. Nanoindentation was used to understand the hardness and stiffness of the printed polytetrafluoroethylene. In vitro studies were used to evaluate the functionality of the solid microneedles and hollow needles. Our results suggest that DLP-based additive manufacturing is useful for processing polytetrafluoroethylene into functional skin-contacting medical devices. |