Catheters

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/00 (2006.01) A61M 25/092 (2006.01)

Patent

CA 2241615

A catheter assembly especially adapted for injecting therapeutic liquids such as DNA solutions to a patient's myocardium comprises an elongated guiding catheter for insertion through a patient's artery to the vicinity of the myocardium, a reservoir for therapeutic liquid at the distal end of the guiding catheter, one or more injection needles protruding from the distal end of the guiding catheter and in fluid communication with the reservoir, the extent of needle protrusion being appropriate for penetration of but not passage through the myocardial wall, and operating means for delivering a predetermined quantity of therapeutic liquid from the reservoir through the needles.

Ensemble cathéter spécialement adapté pour l'injection de liquides thérapeutiques, comme des solutions d'ADN, dans la région du myocarde d'un patient. Cet ensemble comprend : une sonde-guide allongée permettant une insertion à travers une artère du patient située près du myocarde; un réservoir contenant le liquide thérapeutique à l'extrémité distale de la sonde-guide; une ou plusieurs aiguilles d'injection en saillie depuis l'extrémité distale de la sonde-guide et en libre communication avec le réservoir, l'importance de la saillie de l'aiguille permettant une pénétration mais non un passage à travers la paroi myocardique; un dispositif de fonctionnement permettant d'administrer une quantité prédéterminée de liquide thérapeutique depuis le réservoir, à travers les aiguilles.

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