US 7,566,318 B2
Ultrasonic subcutaneous dissection tool incorporating fluid delivery
Paul A Haefner, Circle Pines, Minn. (US)
Assigned to Cardiac Pacemakers, Inc., St. Paul, Minn. (US)
Filed on Sep. 02, 2003, as Appl. No. 10/653,456.
Claims priority of provisional application 60/462272, filed on Apr. 11, 2003.
Prior Publication US 2004/0204728 A1, Oct. 14, 2004
Int. Cl. A61B 17/20 (2006.01)
U.S. Cl. 604—22 13 Claims
OG exemplary drawing
 
1. A dissection tool, comprising:
an elongated handle having a proximal end and a distal end;
an elongated dissecting element having a proximal end and a tapered distal end, the proximal end of the elongated dissecting element coupled to the handle and the elongated dissecting element extending from the distal end of the handle;
two ultrasonic transducers provided along the tapering of the distal end of the elongated dissecting element, the ultrasonic transducers provided on opposite sides of the elongated dissecting element; and
a fluid channel system extending from at least the proximal end of the elongated dissecting element to the distal end of the elongated dissecting element, the fluid channel system terminating in a port system having a plurality of apertures along the tapering of the distal end of the elongated dissecting element.