Methods and devices having electrically actuatable surfaces

Details Methods and devices having electrically actuatable surfaces Methods and devices having electrically actuatable surfaces

A - Human Necessities

61

F

A61F 2/02 (2006.01) A61F 2/82 (2006.01) A61L 27/40 (2006.01) A61L 27/50 (2006.01) A61L 29/12 (2006.01) A61L 29/14 (2006.01) A61L 31/12 (2006.01) A61L 31/14 (2006.01) A61M 31/00 (2006.01)

Patent

CA 2639421

The present invention generally relates to the field of insertable or implantable medical devices, such as balloon catheters, stents and other similar diagnostic or therapeutic devices which may be provided within the body for treatment and/or diagnosis of diseases and conditions. In particular, the present invention relates to devices whose surfaces are electrically actuatable between a hydrophobic state and a less hydrophobic state or a hydrophilic state. Such devices include drug- eluting devices such as balloon catheters and stents which release therapeutic agents upon the application of an electric field. Such devices further include devices such as balloon catheters and stents whose lubricity may be modulated in situ by the application of an electric field.

La présente invention concerne, d'une manière générale, le domaine des dispositifs médicaux pouvant être insérés ou implantés, tels que cathéters à ballonnets, endoprothèses et autres dispositifs de diagnostic ou de thérapie analogues pouvant être appliqués dans le corps en vue de traiter et/ou de diagnostiquer des maladies et des pathologies. En particulier, la présente invention concerne des dispositifs dont les surfaces peuvent être actionnées électriquement, lesdites surfaces passant alors d'un état hydrophobe à un état moins hydrophobe ou à un état hydrophile. De tels dispositifs comprennent des dispositifs d'élution de médicament, tels que des cathéters à ballonnets et des endoprothèses, qui libèrent des agents thérapeutiques sous l'effet d'un champ électrique. De tels dispositifs incluent également des dispositifs tels que des cathéters à ballonnets et des endoprothèses dont le pouvoir lubrifiant peut être modulé in situ par l'application d'un champ électrique.

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