Patent ID: 6491660
Filing Date: 2002-12-10
Classification: A61B,A61M

Abstract:
A frontal infusion system for treating a blood vessel lesion comprising:a burr having a distal end and a proximate end, the burr being moveable through a blood vessel containing a lesion for ablating the lesion; a conduit connected to the burr to carry a quantity of infusion liquid thereto, the burr having one or more first passages extending at least partly in a proximate direction for expelling infusion liquid at least partly toward the proximate end portion of the burr; one or more second passages for conveying infusion liquid and constructed and arranged relatively to expel such infusion liquid beyond the distal end of the burr, the first passages and the second passages being constructed and arranged relatively such that more infusion fluid is expelled through the first passages than through the second passages; and an aspiration sheath having an aspiration mouth opening adjacent to the burr for aspiration of inflsion liquid expelled from the first passages and from the second passages.