1
Axel F Brisken, John R McKenzie, Robert F Zuk, Menahem Nassi, Mark W Cowan, Paul D Corl: Therapeutic ultrasonic catheter for delivering a uniform energy dose. Pharmasonics, Townsend and Townsend and Crew, October 2, 2001: US06296619 (345 worldwide citation)

A method of treating a target region in a body lumen, said method comprising: directing a uniform dose of ultrasonic energy from an interior of the lumen radially outward over a treatment length of the lumen, wherein the dosage of ultrasonic energy received at any one point along the length varies b ...


2
Axel F Brisken: Apparatus and methods for ultrasonically enhanced fluid delivery. Pharmasonics, Townsend and Townsend and Crew, April 7, 1998: US05735811 (210 worldwide citation)

An ultrasonic catheter comprises a catheter body having an interface surface which extends at least partially over a circumferential portion of the catheter body. The interface surface is coupled to an oscillating driver so that axial and/or radial oscillations are radiated into a fluid environment ...


3
N Parker Willis, Axel F Brisken, Mark W Cowan, Michael Pare, Robert Fowler, James Brennan: Optimizing energy transmission in a leadless tissue stimulation system. EBR Systems, Wilson Sonsini Goodrich & Rosati, May 6, 2014: US08718773 (173 worldwide citation)

Method and systems for optimizing acoustic energy transmission in implantable devices are disclosed. Transducer elements transmit acoustic locator signals towards a receiver assembly, and the receiver responds with a location signal. The location signal can reveal information related to the location ...


4
Axel F Brisken: Catheters comprising bending transducers and methods for their use. Pharmasonics, Townsend&Townsend&Crew, August 3, 1999: US05931805 (166 worldwide citation)

A catheter comprises a catheter body having a bending plate transducer disposed at or near its distal end. The bending plate transducer is typically a unimorph, bimorph, or other conventional vibratory transducer capable of imparting pressure waves in a direction generally normal to the plane of the ...


5
Axel F Brisken: Apparatus and methods for ultrasonically enhanced intraluminal therapy. Pharmasonics, Townsend and Townsend and Crew, March 10, 1998: US05725494 (152 worldwide citation)

An ultrasonic catheter comprises a catheter body having a resonantly vibrating assembly at its distal end. The resonantly vibrating assembly comprises a tail mass, an interface member, and a spring element which connects the tail mass to the interface member. An interface surface is formed on the in ...


6
Yue Teh Jang, Axel F Brisken: Method and apparatus for ultrasound imaging and atherectomy. Cardiovascular Imaging Systems, Lyon & Lyon, January 24, 1995: US05383460 (146 worldwide citation)

A catheter for ultrasonic imaging has a transducer fixed to a cutter. The transducer is moved longitudinally within an artery while in a fixed radial position. Ultrasonic reflections are received and processed to display a planer or rectangular field of view image area of the artery. Other axial pla ...


7
Axel F Brisken, Lowell S Smith: Wear plate for piezoelectric ultrasonic transducer arrays. General Electric Company, Donald R Campbell, James C Davis, Marvin Snyder, July 8, 1980: US04211949 (146 worldwide citation)

A linear transducer array for 90.degree. or other wide angle sector scans is covered by a body contacting wear plate made of a material such as filled silicone rubber or polyurethane epoxy in which the longitudinal sound velocity is equal to or less than that in the body and in which the acoustic im ...


8
Axel F Brisken: Pharmasonics, Townsend and Townsend and Crew, March 17, 1998: US05728062 (144 worldwide citation)

An energy-transmitting catheter comprises a catheter body having a vibrating assembly at its distal end. The vibrating assembly comprises a magnetostrictive driver which is mechanically coupled to an interface member on the catheter for radiating energy into an environment surrounding the distal end ...


9
Lowell S Smith, Axel F Brisken: Front surface matched piezoelectric ultrasonic transducer array with wide field of view. General Electric Company, Donald R Campbell, James C Davis, Marvin Snyder, July 8, 1980: US04211948 (140 worldwide citation)

An ultrasonic transducer array with high sensitivity, for use in water tanks and with human subjects in steered beam imagers to make wide angle sector scans, has narrow transducer elements and one or more quarter-wavelength impedance matching layers on the front surface of each element. The matching ...


10
Axel F Brisken, Vartan E Ghazarossian: Balloon catheters having ultrasonically driven interface surfaces and methods for their use. Pharmasonics, Townsend and Townsend and Crew, December 8, 1998: US05846218 (131 worldwide citation)

A catheter comprises a catheter body having an oscillating driver, an interface surface mechanically coupled to the driver, and an inflatable balloon disposed near the interface surface. The balloon may be an angioplasty balloon, in which case the interface surface will deliver ultrasonic or other v ...