Patent
Catheter for laser treatment of atherosclerotic plaque and other tissue abnormalities
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In this paper, a medical catheter for treating atherosclerotic plaque and other abnormalities includes optical fibers (30) for applying laser energy to the plaque and an ultrasonic transducer system (32, 34) for sensing the location and configuration of the plaque.Abstract:
A medical catheter (10) for treating atherosclerotic plaque (16) and other abnormalities includes optical fibers (30) for applying laser energy to the plaque (16) and an ultrasonic transducer system (32, 34) for sensing the location and configuration of the plaque (16). The optical fibers (30) and electrical wiring (40) for the transducers (32, 34) extend through a probe (28) which is rotatable inside of the catheter tube (12) to provide universal directional control of the fibers (30) and transducers (32, 34). A reflective system includes a curved reflector (38) in the probe (28) which can be axially adjusted to vary the directions of the ultrasonic signals. Alternative forms of the invention include different reflector schemes, an angled ultrasonic transducer (32, 34) having a conical signal output that varies with frequency, and various different systems for rotating the transducers (32, 34) and fibers (30).read more
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John A. Hossack,John W. Sliwa,Samuel H. Maslak,Edward A. Gardner,Gregory L. Holley,David J. Napolitano +5 more
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Ultrasonic medical device operating in a transverse mode
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References
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PatentDOI
Acoustic imaging catheter and the like
TL;DR: In this article, the authors presented a set of selectable catheter sheaths, including a sheath with an integral acoustically-transparent window, sheaths with end extensions that aid in positioning and a liquid injection-producing sheath.
PatentDOI
Catheter apparatus, system and method for intravascular two-dimensional ultrasonography
TL;DR: In this paper, an ultrasonic transducer is carried by the distal end of a catheter adapted for insertion into a vessel, and either the transducers or another element is rotated and/or translated relative to the catheter to image different portions of the vessel.
Patent
Ultrasonic imaging catheter having rotational image correlation
TL;DR: An ultrasonically opaque element is attached to the catheter body and disposed through the image plane so that an image artifact or marker appears on the resulting ultrasonic image as discussed by the authors.
Patent
Catheter for removing arteriosclerotic plaque
TL;DR: In this article, an apparatus and method for identifying and removing arteriosclerotic plaque deposits from blood vessels is described, which consists of a catheter having an optical fiber for transmitting laser irradiation and an ultrasonic transducer mounted at the tip of the catheter for transmitting and receiving ultrasonic signals.
Patent
Apparatus with a catheter for examining hollow organs or bodies with the ultrasonic waves
TL;DR: In this article, a device for examining the heart is provided with a catheter adapted to be placed within the heart and including at one end thereof, circumferentially arranged, equidistantly distributed elements, serving for the transmission and reception of ultrasonic waves.