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Todd Fjield, Edward Paul Harhen, David E Acker, Patrick David Lopath: Thermal treatment methods and apparatus with focused energy application. Transurgical, Lerner David Littenberg Krumholz & Mentlik, October 21, 2003: US06635054 (340 worldwide citation)

A collapsible ultrasonic reflector incorporates a gas-filled reflector balloon, a liquid-filled structural balloon an ultrasonic transducer disposed within the structural balloon. Acoustic energy emitted by the transducer is reflected by a highly reflective interface between the balloons. In a cardi ...


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David E Acker, Patrick David Lopath: Hifu applications with feedback control. Transurgical, Lerner David Littenberg Krumholz & Mentlik, January 21, 2003: US06508774 (245 worldwide citation)

High intensity focused ultrasound heating is provided by applying therapeutic ultrasonic waves using an array of transducers. Cavitation is detected by using some or all of the transducers in the array to detect ultrasonic waves emanating from or reflected from the patient's body or the interfa ...


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David E Acker, Louis R Kavoussi, Bharat B Pant, Patrick David Lopath, Emad S Ebbini: Occlusion of tubular anatomical structures by energy application. Transurgical, Lerner David Littenberg Krumholz & Mentlik, July 29, 2003: US06599256 (244 worldwide citation)

A tubular anatomical structure in a mammalian subject is occluded by directing ultrasonic energy from outside of the body. For example, a male subject may be sterilized by directing ultrasonic energy through the skin of the scrotum, onto the vas deferens. The focal spot of an ultrasonic transducer m ...


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Todd Fjield, Edward Paul Harhen, David E Acker, Patrick David Lopath: Thermal treatment methods and apparatus with focused energy application. Prorhythm, Lerner David Littenberg Krumholz & Mentlik, August 1, 2006: US07083614 (199 worldwide citation)

A collapsible ultrasonic reflector incorporates a gas-filled reflector balloon, a liquid-filled structural balloon an ultrasonic transducer disposed within the structural balloon. Acoustic energy emitted by the transducer is reflected by a highly reflective interface between the balloons. In a cardi ...


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Yegor Sinelnikov, Yong Zou, Reinhard Warnking, James Savage, Robert C Pacheco, Jaime Merino, Patrick David Lopath, John Hotmer, Todd Fjield: Cardiac ablation devices. Recor Medical, Jones Day, Nicola A Pisano, Christopher C Bolten, November 23, 2010: US07837676 (110 worldwide citation)

A cardiac ablation device treats atrial fibrillation by directing and focusing ultrasonic waves into a ring-like ablation region (A). The device desirably is steerable and can be moved between a normal disposition, in which the ablation region lies parallel to the wall of the heart for ablating a lo ...


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Todd Fjield, Patrick David Lopath, Edward Paul Harhen: Ultrasonic transducers. Transurgical, Lerner David Littenberg Krumholz & Mentlik, July 20, 2004: US06763722 (76 worldwide citation)

A compact, high-power ultrasonic emitting transducer has an active element such as a piezoelectric element and structure defining a reflective backing interface such as an air interface behind the rear surface of the active element. A liquid is provided in the resonant unit between the backing inter ...


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Todd Fjield, Edward Paul Harhen, David E Acker, Patrick David Lopath: Thermal treatment methods and apparatus with focused energy application. ProRhythm, Lerner David Littenberg Krumholz & Mentlik, February 5, 2008: US07326201 (70 worldwide citation)

A collapsible ultrasonic reflector incorporates a gas-filled reflector balloon, a liquid-filled structural balloon an ultrasonic transducer disposed within the structural balloon. Acoustic energy emitted by the transducer is reflected by a highly reflective interface between the balloons. In a cardi ...


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Patrick David Lopath, Edward Paul Harhen: Balloon alignment and collapsing system. ProRhythm, Lerner David Littenberg Krumholz & Mentlik, October 26, 2004: US06808524 (42 worldwide citation)

A balloon catheter is provided with engagement elements disposed within the balloon so that, upon inflation of the balloon, the engagement elements move in the proximal to distal direction of the catheter so as to abut one another and form a substantially rigid column to maintain alignment of the di ...


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Patrick David Lopath, Edward Paul Harhen, Yegor Sinelnikov, James D Savage, Jaime Merino, John Hotmer: Balloon alignment and collapsing system. ProRhythm, Lerner David Littenberg Krumholz & Mentlik, March 13, 2007: US07189229 (22 worldwide citation)

A balloon catheter is provided with a sleeve and a flexible material where, upon inflation of the balloon, the sleeve is slid over a ball joint, preventing the flexible material and tube from moving through a range of motion in order to prevent the tube from kinking and misaligning.