Electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoring
Electrophoretic deposition (EPD) is a material processing technology which uses direct current (DC) voltage to deposit thin layers on a metallic substrate. EPD is a promising coating technology for medical devices due to its advantages such as thin homogenous layers and a broad range of usable subst...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2018-09-01
|
| Series: | Current Directions in Biomedical Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/cdbme-2018-0125 |
| _version_ | 1797740380549021696 |
|---|---|
| author | Chen Karin J. Oswald Johanna Krüger Thilo |
| author_facet | Chen Karin J. Oswald Johanna Krüger Thilo |
| author_sort | Chen Karin J. |
| collection | DOAJ |
| description | Electrophoretic deposition (EPD) is a material processing technology which uses direct current (DC) voltage to deposit thin layers on a metallic substrate. EPD is a promising coating technology for medical devices due to its advantages such as thin homogenous layers and a broad range of usable substrates. The objective of this paper is to demonstrate how EPD can be deployed successfully to apply an insulation layer on a stimulation electrode. The Mapping suction probe by inomed Medizintechnik GmbH, Germany, was coated in this investigation. The unique feature of this product is that it combines both a surgical vacuum and a stimulation probe and is used for brain tumour resection. As for the insulation layer, ethylene chlorotrifluoroethylene (ECTFE) was chosen because of its good dielectric and biocompatible properties. ECTFE particles (Halar®6514, Solvay Specialty Polymer, Italy) were mixed with a solvent (Novec™ 7100DL Engineered Fluid, 3M™) to form a suspension. The coating process was partly automatized to ensure good repeatability and reproducibility. For coating, the stimulation probe was immersed in the suspension so that the counter electrode, a stainless-steel net, surrounded it equidistantly. A heat treatment of the coated device in an oven (FED56, Binder, Germany) was required afterwards to melt the deposited polymer particles. After the heat treatment, a glossy black layer (layer thickness 42 μm) was observed on the substrate. A smooth and homogenous surface confirmed that the coating is suitable for surgical application. However, due to a high evaporation rate of the solvent, the ratio of particles and solvent changes and the coating process will have to be controlled in the future to achieve a stable process. Further advantages of EPD such as short processing time, straightforward process flow and scalability enables high production quantities which is attractive for industrial application. EPD might be a promising coating technology for medical devices in the future. |
| first_indexed | 2024-03-12T14:11:36Z |
| format | Article |
| id | doaj.art-66401a9f3f724a299c8b1724fa32bdb9 |
| institution | Directory Open Access Journal |
| issn | 2364-5504 |
| language | English |
| last_indexed | 2024-03-12T14:11:36Z |
| publishDate | 2018-09-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Current Directions in Biomedical Engineering |
| spelling | doaj.art-66401a9f3f724a299c8b1724fa32bdb92023-08-21T06:42:02ZengDe GruyterCurrent Directions in Biomedical Engineering2364-55042018-09-014152152410.1515/cdbme-2018-0125cdbme-2018-0125Electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoringChen Karin J.0Oswald Johanna1Krüger Thilo2University of Stuttgart,Stuttgart, Germanyinomed Medizintechnik GmbH,Emmendingen, Germanyinomed Medizintechnik GmbH,Emmendingen, GermanyElectrophoretic deposition (EPD) is a material processing technology which uses direct current (DC) voltage to deposit thin layers on a metallic substrate. EPD is a promising coating technology for medical devices due to its advantages such as thin homogenous layers and a broad range of usable substrates. The objective of this paper is to demonstrate how EPD can be deployed successfully to apply an insulation layer on a stimulation electrode. The Mapping suction probe by inomed Medizintechnik GmbH, Germany, was coated in this investigation. The unique feature of this product is that it combines both a surgical vacuum and a stimulation probe and is used for brain tumour resection. As for the insulation layer, ethylene chlorotrifluoroethylene (ECTFE) was chosen because of its good dielectric and biocompatible properties. ECTFE particles (Halar®6514, Solvay Specialty Polymer, Italy) were mixed with a solvent (Novec™ 7100DL Engineered Fluid, 3M™) to form a suspension. The coating process was partly automatized to ensure good repeatability and reproducibility. For coating, the stimulation probe was immersed in the suspension so that the counter electrode, a stainless-steel net, surrounded it equidistantly. A heat treatment of the coated device in an oven (FED56, Binder, Germany) was required afterwards to melt the deposited polymer particles. After the heat treatment, a glossy black layer (layer thickness 42 μm) was observed on the substrate. A smooth and homogenous surface confirmed that the coating is suitable for surgical application. However, due to a high evaporation rate of the solvent, the ratio of particles and solvent changes and the coating process will have to be controlled in the future to achieve a stable process. Further advantages of EPD such as short processing time, straightforward process flow and scalability enables high production quantities which is attractive for industrial application. EPD might be a promising coating technology for medical devices in the future.https://doi.org/10.1515/cdbme-2018-0125electrophoretic depositioninsulation layerthin filmmedical devicestimulation electrode |
| spellingShingle | Chen Karin J. Oswald Johanna Krüger Thilo Electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoring Current Directions in Biomedical Engineering electrophoretic deposition insulation layer thin film medical device stimulation electrode |
| title | Electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoring |
| title_full | Electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoring |
| title_fullStr | Electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoring |
| title_full_unstemmed | Electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoring |
| title_short | Electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoring |
| title_sort | electrophoretic deposition of dielectric film on stimulation electrodes for the use in intraoperative neuromonitoring |
| topic | electrophoretic deposition insulation layer thin film medical device stimulation electrode |
| url | https://doi.org/10.1515/cdbme-2018-0125 |
| work_keys_str_mv | AT chenkarinj electrophoreticdepositionofdielectricfilmonstimulationelectrodesfortheuseinintraoperativeneuromonitoring AT oswaldjohanna electrophoreticdepositionofdielectricfilmonstimulationelectrodesfortheuseinintraoperativeneuromonitoring AT krugerthilo electrophoreticdepositionofdielectricfilmonstimulationelectrodesfortheuseinintraoperativeneuromonitoring |