Patent · US Active

Medical devices having inorganic particle layers

US8932346B2 · kind B2 · utility

10Cited by

460References

21Claims

0Family size

Assignee

Boston Scientific Scimed, Inc. · US

Inventors

Michael Kuehling · Munich, DE
Dominique Seidel · Munich, DE
Torsten Scheuermann · Munich, DE
Jan Weber · Maple Grove, US

Key dates

Filing date	Apr 23, 2009
Grant date	Jan 13, 2015
Priority date	—
Expiry date	Jun 11, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L2420/02
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An expandable medical device having a particle layer disposed over a reservoir containing a therapeutic agent. The particle layer has a first porosity when the medical device is in the unexpanded configuration and a second porosity when the medical device is in the expanded configuration. The particle layer comprises a plurality of micron-sized or nano-sized particles. In certain embodiments, the particles are not connected to each other, and as such, the different porosities are provided by changes in the spacing between the particles as the medical device is expanded/unexpanded. Also disclosed are medical devices having a particle layer, wherein the particle layer comprises a plurality of encapsulated particles, and methods of coating medical devices with particles.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.