A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 25/10 (2006.01)
Patent
CA 2207189
This invention is a dilation catheter (10) for use in performing angioplasty procedures. The catheter includes a relatively long catheter shaft (20) which has two lumens (20-1, 20-2). A relatively short guidewire receiving tube (30) is thermally bonded to the distal end (24) of the shaft, with its lumen approximately aligned with one of the lumens of the catheter shaft, and a stiffening wire (22) positioned therein. A dilation balloon (40), preformed with a shape that enables it to be used in an offset configuration, is thermally bonded to the distal end (44) and proximal end (42) of the tube, with its lumen aligned with the remaining lumen of the catheter shaft. The balloon and tube together define channels for the perfusion of blood past the balloon, which channels remain open even when the balloon bears against the tube during the inflation thereof.
L'invention concerne un cathéter de dilatation (10) s'utilisant en angioplastie. Ce cathéter comprend une tige relativement longue (20) qui possède deux lumières (20-1)(20-2). Un tube relativement court (30) servant à recevoir un fil de guidage est fixé thermiquement à l'extrémité distale (24) de la tige, sa lumière étant alignée approximativement sur une des lumières de la tige du cathéter, et contient un fil de raidissement (22). Un ballonnet de dilatation (40), dont la forme permet de l'utiliser en configuration décalée, est fixé thermiquement à l'extrémité distale (44) et à l'extrémité proximale (42) du tube, sa lumière étant alignée sur les lumières restantes de la tige du cathéter. Le ballonnet et le tube définissent des canaux de perfusion sanguine au-delà du ballonnet, qui restent ouverts même quand le ballonnet porte contre le tube pendant son gonflage.
Borden Ladner Gervais Llp
Janacek Jaroslav
LandOfFree
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