Method for Deposition of Chitosan Coating on Urinary Catheters
| Publication Number: | US20240207569 |
| Application Date: | 01.09.2023 |
| Assignee/Applicant: | Jožef Stefan Institute [SI] |
| Inventor: | Alenka Vesel, Miran Mozetic, Gregor Primc, Rok Zaplotnik, Albert Kurincic |
| Title: | Method for Deposition of Chitosan Coating on Urinary Catheters |
| Description: | The aspects of the disclosed embodiments relates to methods for optimization of the sliding properties of urinary catheters. The urinary catheters are first treated with a non-equilibrium gaseous plasma sustained in reactive gases or a mixture of a reactive gas with a noble gas. The first treatment enables a hydrophilic surface finish when oxygen is a reactive gas and an almost super-hydrophilic finish when the catheter is treated with hydrogen plasma followed by oxygen plasma. The hydrophilicity of the surface finish obtained upon the first plasma treatment is beneficial for adhering a layer of water solution of chitosan, which spreads uniformly on the entire outer surface of the catheter. The catheter with a layer of water solution of chitosan is dried and then treated with plasma containing an oxidative gas for better absorption of water by the dried chitosan film. |
| Drawings: |  |
| Category: | Physical Sciences |
| Technology application codes: | Other industrial technologies, Physical and exact sciences, Measurements and standards |
| Market application codes: | Industrial products, Other |
| www: | https://patentscope.wipo.int/search/en/detail.jsf?docId=US432025924&_cid=P12-M5V36H-10667-1 |
| Patent offices: | WIPO |
Extended patent application
| Publication Number: | EP4389162 |
| Application Date: | 24.12.2022 |
| Assignee/Applicant: | Jožef Stefan Institute [SI] |
| Inventor: | Alenka Vesel, Miran Mozetic, Gregor Primc, Rok Zaplotnik, Albert Kurincic |
| Title: | Method for Deposition of Chitosan Coating on Urinary Catheters |
| www: | https://patentscope.wipo.int/search/en/detail.jsf?docId=EP432040211&_fid=US432025924 |