Importance

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Abstract

A device for performing regional perfusion obstruction dissolution, composed of: an infusion catheter insertable into a blood vessel to extend across the site of an obstruction, the catheter having a length and extending in the direction of the length between a distal end via which the catheter is inserted into the blood vessel and a proximal end remote from the distal end, and the catheter being configured to have a blood bypass flow path extending along a portion of the length of the catheter and communicating with regions surrounding the catheter at first and second locations along the length of the catheter such that when the catheter extends across a clot site in a blood vessel, the first and second locations are positioned upstream and downstream, respectively, of the clot with respect to the direction of blood flow in the vessel, and a thrombolytic agent flow path extending along the length of the catheter from the proximal end and communicating with a region surrounding the catheter at a third location along the length of the catheter between the first and second locations for delivering thrombolytic agent to the clot when the catheter extends across the clot site in the blood vessel; a suction catheter insertable into the blood vessel independently of the infusion catheter for withdrawing obstruction material from the obstruction site; and blocking devices secured to the catheters at locations which will enclose the obstruction site when the catheters are inserted, for blocking blood flow along a path exterior to the catheters.

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First Claim