Controlling the uniformity of PECVD deposition on medical syringes, cartridges, and the like
US10201660B2 · kind B2 · utility
4Cited by
638References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2013 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | May 2, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2207/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method and apparatus for plasma modifying a workpiece such as a medical barrel, medical barrel, vial, or blood tube is described. Plasma is provided within the lumen of the workpiece. The plasma is provided under conditions effective for plasma modification of a surface of the workpiece. A magnetic field is provided in at least a portion of the lumen. The magnetic field has an orientation and field strength effective to improve the uniformity of plasma modification of the generally cylindrical interior surface 16 of the generally cylindrical interior surface 16.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.