Patent ID: 6096001
Filing Date: 2000-08-01
Classification: A61B

Abstract:
A device for removing thrombus or other tissue from an occluded or obstructed biological or synthetic body vessel or from a body cavity comprising:a. a tubular member having a proximal end and a distal end, the tubular member having a first passage and a second passage extending along the length thereof, each passage with a proximal end and a distal end;b. a high pressure fluid source joiningly attached to said proximal end of said first passage which drives a flow of high pressure fluid into said proximal end of said first passage;c. said first passage comprising tubular means for carrying the flow of high pressure fluid from said proximal end to said distal end, said distal end of said first passage having at least two orifices;d. said second passage comprising tubular means for carrying a flow of fluid and emulsified tissue from said distal end of said second passage to said proximal end of said second passage, said distal end of said second passage being open;e. at least two fluid jets emanating from said orifices formed from the flow of high pressure fluid carried by said first passage;f. at least one of the at least two fluid jets emanating from said distal end of said first passage impinging on said open distal end of said second passage and defining an impinging jet, thereby providing stagnation pressure to drive the flow of emulsified tissue from said distal end of said second passage towards said proximal end of said second passage;g. at least one other of the at least two fluid jets is directed radially outward substantially away from said tubular member rather than being directed to impinge on said open distal end of said second passage of said tubular member and defining an outwardly facing jet; and,h. said proximal end of said second passage provides removal of the tissue from the body vessel or body cavity.