Selective drug delivery in a lumen

A - Human Necessities – 61 – M

Patent

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Details

A61M 31/00 (2006.01) A61B 5/053 (2006.01) A61L 29/08 (2006.01) A61L 29/16 (2006.01) A61M 25/10 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2743857

Methods and systems are disclosed for selective drug or fluid delivery in a lumen through a coating or fluid delivery channels. One system includes an elongate catheter having a proximal end and a distal end with an axis therebetween, the catheter having a radially expandable balloon near the distal end and an energy delivery portion proximate the balloon for transmission of energy, a thermally changeable coating having a releasable drug coupled to the balloon, the thermally changeable coating being oriented to be urged against the body tissue when the expandable balloon expands and an energy source operatively coupled to the energy delivery portion configured to energize the energy delivery portion to heat and liquefy the thermally changeable coating to release the drug to the body tissue.

L'invention porte sur des procédés et des systèmes pour une administration sélective de médicament ou de fluide dans une lumière à travers un revêtement ou des canaux de distribution de fluide. Un système comprend un cathéter allongé ayant une extrémité proximale et une extrémité distale avec un axe entre elles, le cathéter ayant un ballonnet expansible radialement, proche de l'extrémité distale et une partie distribution d'énergie proche du ballonnet pour une transmission d'énergie, un revêtement pouvant changer thermiquement ayant un médicament libérable couplé au ballonnet, le revêtement pouvant changer thermiquement étant orienté pour être sollicité contre les tissus corporels lorsque le ballonnet expansible s'étend et une source d'énergie couplée opérationnellement à la partie distribution d'énergie, configurée pour exciter la partie distribution d'énergie pour chauffer et liquéfier le revêtement pouvant changer thermiquement pour libérer le médicament vers le tissu corporel.

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