An ultrasonically visible solid device for inserting into a non-gas target medium comprises an echogenic surface having structures entrapping gas when the device is in the target medium, the entrapped gas causing the device to be ultrasonically visible, wherein the gas-entrapping structures are covered with a flexible overcoat that does not significantly reduce the compressibility of the gas trapped in the structures.
申请公布号
EP1663108(A4)
申请公布日期
2009.06.10
申请号
EP20040782027
申请日期
2004.08.25
申请人
ANGIOTECH BIOCOATINGS, CORP.
发明人
VIOLANTE, MICHAEL, R.;WHITBOURNE, RICHARD, J.;LANZAFAME, JOHN, F.;LYDON, MARGARET