Polymeric marker with high radiopacity for use in medical devices
US8637132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2010 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Mar 9, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/139
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
High radiopacity is achieved in a polymeric marker by combining a polymeric resin, a powdered radiopaque agent having uniformly shaped particles of a specific particle size distribution and a wetting agent. The method to produce the marker calls for the blending and pelletization of these materials followed by extrusion onto support beading. The resulting supported tubing is subsequently cut to length with the beading still in place. After ejection of the beading remnant the marker is slipped into place on the device to be marked and attached by melt bonding. Marking of a guidewire allows lesions to be measured while the marking of balloon catheters allow the balloon to be properly positioned relative to a lesion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.