Coating process and apparatus
US6254921A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1999 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Dec 8, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/32
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process and apparatus for dip-coating intermediate and/or discrete discontinuous portions of longitudinal devices, including medical devices such as catheters and guidewires. The apparatus provides a chamber in which both the desired portion(s) of the device and the coating solution can be controllably contacted. A controlled coating can be achieved within the chamber by providing and controlling one or more of the following relationships: a) the manner in which a chamber (containing solution) is itself moved with respect to a static device, b) the manner in which the device is moved with respect to a fixed chamber position containing a fixed volume of solution, and/or c) the manner in which both the chamber and device are fixed in position, and the coating is achieved by adding and removing a volume of solution from the chamber. The resultant movement of solution and device is intended to mimic or replicate the relative movements involved in a conventional dip-coating procedure, at least along the length of device to be coated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.