INTERVENTIONAL CATHETERS INCORPORATING ASPIRATION AND/OR INFUSION SYSTEMS

摘要

An interventional catheter assembly comprising a catheter for insertion and guidance to a target site in a body lumen or a cavity and an operating head mounted in proximity to a distal end of the catheter and comprising a system for removing obstructive material from the target site is provided. In certain embodiments, the catheter assembly includes at least one aspiration port located proximal to the operating head that communicates with a first sealed lumen for withdrawing fluids and obstructive material from the target site. The catheter assembly may also include at least one liquid infusion port that communicates with a second sealed lumen for supplying fluid to a location in proximity to the target site. Kits including the interventional catheter assembly with an aspiration and/or infusion conduit are also provided.

主权项

1. An interventional catheter assembly comprising:
an operating head mounted at a distal end of the catheter assembly configured for removing obstructive material from a target site in a body lumen or a cavity; an aspiration port provided in proximity to the operating head and in communication with a sealed lumen for withdrawing aspirate fluids and obstructive material from the target site; an infusion port for supplying infusate fluid to a location in proximity to the target site; an aspiration system for applying vacuum to the aspiration port; and an infusion system for providing infusate fluid to the infusion port; wherein the infusion and aspiration systems are controlled during operation of the interventional catheter assembly to provide volume ratios of infusate to aspirate of greater than about 1:1 and less than about 2.5:1.