Patent ID: 8608703

Claim:
An infusion flow guidewire system comprising: a. an infusion flow guidewire having a proximal end, a distal end, at least one jet orifice, and a flexible tip at the distal end, wherein the flexible tip has a closed distal end and further comprises a coil and core wire: b. a delivery sheath having a proximally located torque handle, wherein the infusion flow guidewire is capable of passing through the delivery sheath; and c. a coupling assembly removeably attachable to the proximal end of the infusion flow guidewire to facilitate connection of the proximal end of the infusion flow guidewire to a pressurized fluid supply and to facilitate manipulation of the infusion flow guidewire, wherein the torque handle of the delivery sheath includes proximal and distal ends and further includes: i. a torque body having a bore and external threads; ii. a collet for insertion into the bore of the torque body; iii. a collet nut for compressing the collet when tightened on the external threads; and iv. a strain relief having a passage carrying the proximal end of the delivery sheath, wherein the assembled torque handle provides coaxial accommodation of the delivery sheath and frictional engagement of the infusion flow guidewire when tightened, and wherein the infusion flow guidewire passes through the proximal and distal ends of the torque handle.