PatentDOI
Use of at least one composite piezoelectric transducer in the manufacture of an ultrasonic therapy apparatus for applying therapy, in a body zone, in particular to concretions, to tissue, or to bones, of a living being and method of ultrasonic therapy
TLDR
In this paper, a composite piezoelectric transducer for making an acoustic or an ultrasonic therapeutic apparatus was proposed, where the transducers can be a single large-size transducers or a multi-transducer device.Abstract:
The invention relates to a composite piezoelectric transducer for making an acoustic or an ultrasonic therapeutic apparatus. The transducer may be a single large-size transducer or it may be a multi-transducer device and it advantageously emits ultrasonic waves that are focused on a focal point.read more
Citations
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Fluid-assisted medical devices, systems and methods
TL;DR: In this article, the authors describe an exemplary surgical device for treating tissue and methods of treating tissue, which includes a handle, a fluid passage connectable to a fluid source, a tip portion and a distal end.
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Vibration sensitive ablation device and method
TL;DR: In this paper, an ablation apparatus including a maneuvering mechanism, a conductive element, a sensor attached to the apparatus and an output device in communication with the sensor is provided.
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Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue
TL;DR: In this paper, the authors present an apparatus and a method for producing a virtual electrode within or upon a tissue to be treated with radio frequency alternating electric current, such tissues including but not limited to liver, lung, cardiac, prostate, breast, and vascular tissues and neoplasms.
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Device and method for determining tissue thickness and creating cardiac ablation lesions
TL;DR: A tissue ablation device has a handle and an ablation head coupled to the handle as mentioned in this paper, and a force measurement device is used to measure the force being applied by the first and second jaws to a piece of tissue.
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Methods of using high intensity focused ultrasound to form an ablated tissue area containing a plurality of lesions
James B. Hissong,Fred B. Dinger +1 more
TL;DR: A device and method for ablating tissue is described in this paper, comprising the steps of acquiring an anatomical image of a patient, correlating the image to the patient, guiding an ablating member within the patient while tracking the position of the ablating body part in the patient.
References
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Patent
Ultrasonic diagnostic imaging systems for varying depths of field
TL;DR: In this paper, an ultrasonic diagnostic imaging system is described in which a multi-element transducer array transmits a focused beam of energy from the transducers elements as the depths of focus'is varied between near and far field focusing under operator control.
PatentDOI
Focussing ultrasound transducer
Helmut Wurster,Werner Krauss +1 more
TL;DR: A focussing transducer for the destruction of objects internal to a patient's body by pulses of ultrasonic waves is described in this paper, where a concave transducers surface is divided into areas and a control means can selectively activate the areas of the transducers so that the waveform arriving at the focus can be adjusted.
PatentDOI
Composite ultrasound transducer and method for manufacturing a structured component therefor of piezoelectric ceramic
Ulrich Bast,Hans Dipl Phys Dr Kaarmann,Karl Lubitz,Martina Vogt,Wolfram Wersing,Dieter Cramer +5 more
TL;DR: A composite ultrasound transducer (array) contains piezoelectric ceramic transducers which radiate substantially in the longitudinal direction, and are embedded in a polymer matrix as mentioned in this paper, and the resulting voids between the hardened ceramic elements are filled with polymer to create the overall composite transducers.
Patent
Ultrasonic medical treatment apparatus
Satoshi C,Akihiro C O Patent Di Ishiguro,Nobuyuki C,Syuzi C O Patent Divisi Suzuki,Syuzi C,Nobuyuki C O Patent Divi Iwama,Akihiro C,Satoshi C O Patent Divisi Aida +7 more
TL;DR: An ultrasonic medical treatment apparatus having an piezoelectric element for generating ultrasonic energy is provided in this paper, where the element is constituted by a plurality of unit PDE elements of two or more different shapes.
PatentDOI
Piezoelectric device with reduced negative waves, and use of said device for extracorporeal lithotrity or for destroying particular tissues
TL;DR: In this article, the authors describe a device for generating ultrasonic waves focused in a focal point, such as a circular dome, where the transducers are divided into at least two groups of transducers, of which the resonance frequency differs in such a way that the principal positive ultrasonic wave produced by each group add up together and the negative wave is at least partly cancelled.