Method of measuring properties of interfacial adhesion of medical device coatings
US7287420B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Dec 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring toughness of interfacial adhesion including applying a normal force with a probe to a surface of a coating joined to a major surface of a substrate of a medical device, wherein the surface is substantially parallel to the major surface, and applying a lateral force to the coating with the probe by laterally moving a position of the probe relative to the major surface such that the probe forms at least one delaminated region in the coating as the position of the probe moves laterally across the major surface, the delaminated region having a starting point and an ending point. The method further includes measuring a magnitude of the lateral force over time, and determining a toughness of interfacial adhesion between the coating and the major surface based on changes in magnitude of the lateral force as the position of the probe moves from the starting point to ending point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.