title: Oscillating probe aspiration thrombectomy: comparative in vitro evaluation of two concepts.
abstract: Aspiration thrombectomy supported by an oscillating metal probe within the catheter allows continuous aspiration of large thrombi without catheter obstruction. Thrombus aspiration assisted by an ultrasound-driven probe (frequency 26 kHz) and by an electric motor-driven probe (frequency 40 Hz) was compared in two different in vitro models: aspiration of large clots from a Petri dish and recanalization of thrombotic occlusions in a flow model. Comparable results were found for a 1 mm ultrasound-driven probe and a 0.5 mm motor-driven probe. The motor-driven device, however, seems to be more appealing for in vivo application because of its simplicity, probe flexibility, absence of thermal effects, and low cost.
authors.affiliation: Department of Diagnostic Radiology, Klinkum Aachen, University of Technology, Federal Republic of Germany.
authors.forename: T
authors.initials: T
authors.lastname: Schmitz-Rode
authors.forename: R W
authors.initials: RW
authors.lastname: Günther
mesh_terms: D000818:Animals; D002404:Catheterization / Q000295:instrumentation*; D005069:Evaluation Studies as Topic; D066298:In Vitro Techniques; D013396:Suction / Q000295:instrumentation*; D013552:Swine; D013927:Thrombosis / Q000628:therapy*; D014465:Ultrasonics