Drug delivery and dilation-drug delivery catheters in a...

Details Drug delivery and dilation-drug delivery catheters in a... Drug delivery and dilation-drug delivery catheters in a...

A - Human Necessities

61

M

A61M 29/02 (2006.01) A61M 25/10 (2006.01)

Patent

CA 2195214

Catheters for drug delivery or for both dilatation and drug delivery are provided with a guide wire lumen (14) terminating within the catheter shaft (12) and having an opening through the catheter shaft (12) to enable a guide wire (28) to exit the catheter shaft (12) substantially distal to the proximal end of the catheter. In one embodiment, drug delivery ports (36) are provided between occlusion balloons (22, 24). In another embodiment, a dilatation balloon (120) is also provided between the occlusion balloons (22, 24). In another embodiment, a double layered balloon is provided to simultaneously dilatate the stenosis and deliver medication to the site. Alternatively, a balloon can be provided which only delivers medication.

Des cathéters permettant d'effectuer la perfusion de médicaments ou la perfusion et la dilatation simultanées, sont pourvus d'une lumière de fil de guidage (14) se terminant à l'intérieur de la tige (12) du cathéter et s'ouvrant à travers ladite tige (12), de façon à permettre à un fil de guidage (28) de sortir de ladite tige (12) en position sensiblement distale par rapport à l'extrémité proximale du cathéter. Dans un mode de réalisation, des orifices d'administration de médicaments (36) se trouvent entre des ballonnets d'occlusion (22, 24). Dans un autre mode de réalisation, un ballonnet de dilatation (120) se trouve également entre les ballonnets d'occlusion (22, 24). Dans un autre mode de réalisation, un ballonnet à double couche sert à effectuer simultanément la dilatation de la sténose et l'administration du médicament au site. Dans encore un autre mode de réalisation, le ballonnet peut servir uniquement à administrer le médicament.

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