Abstract: The invention, in its several embodiments, includes a method of making a plurality of impedance-matched layers interposed between an acoustical source and a target media providing optimal transmission of energy from the acoustical source to the target media.

Abstract: The invention, in its several embodiments, includes a method of making a plurality of impedance-matched layers interposes between an acoustical source and a target media providing optimal transmission of energy from the acoustical source to the target media.

Abstract: The present invention provides processes and apparatus for selectively dissolving and removing unwanted solid and semi-solid materials and the like, within a highly localized region utilizing ultra-high energy acoustical waves having a frequency in the range above 50 MHz, for example from about 50 MHz to about 100 GHz. The invention apparatus includes a piezoelectric transducer that is modified to increase the amplitude of acoustical waves of a given frequency without increase in power to the system. The invention and apparatus have important applications in surgical procedures for the treatment of atherosclerotic plaque, prostate disorders, cancers, orthopedic and cosmetic surgery, various types of orthopedic surgery, including atheroscopic surgery, and the like. The present invention is also useful in a wide variety of non-surgical applications, including industrial processes, wherein materials are desired to be selectively removed in a very localized region.

Abstract: The present invention provides processes and apparatus for selectively dissolving and removing unwanted solid and semi-solid materials and the like, within a highly localized region utilizing ultra-high energy acoustical waves having a frequency in the range above 50 MHz, for example from about 50 MHz to about 100 GHz. The invention apparatus includes a piezoelectric transducer that is modified to increase the amplitude of acoustical waves of a given frequency without increase in power to the system. The invention and apparatus have important applications in surgical procedures for the treatment of atherosclerotic plaque, prostate disorders, cancers, orthopedic and cosmetic surgery, various types of orthopedic surgery, including atheroscopic surgery, and the like. The present invention is also useful in a wide variety of non-surgical applications, including industrial processes, wherein materials are desired to be selectively removed in a very localized region.

Abstract: The present invention provides processes and apparatus for selectively dissolving and removing unwanted solid and semi-solid materials and the like, within a highly localized region utilizing ultra-high energy acoustical waves having a frequency in the range above 50 MHz, for example from about 50 MHz to about 100 GHz The invention apparatus includes a piezoelectric transducer that is modified to increase the amplitude of acoustical waves of a given frequency without increase in power to the system. The invention and apparatus have important applications in surgical procedures for the treatment of atherosclerotic plaque, prostate disorders, cancers, orthopedic and cosmetic surgery, various types of orthopedic surgery, including atheroscopic surgery, and the like. The present invention is also useful in a wide variety of non-surgical applications, including industrial processes, wherein materials are desired to be selectively removed in a very localized region.

Abstract: The present invention provides processes and apparatus for selectively dissolving and removing unwanted solid and semi-solid materials and the like, within a highly localized region utilizing ultra-high energy acoustical waves having a frequency in the range above 50 MHz, for example from about 50 MHz to about 100 GHz. The invention apparatus includes a piezoelectric transducer that is modified to increase the amplitude of acoustical waves of a given frequency without increase in power to the system. The invention and apparatus have important applications in surgical procedures for the treatment of atherosclerotic plaque, prostate disorders, cancers, orthopedic and cosmetic surgery, various types of orthopedic surgery, including atheroscopic surgery, and the like. The present invention is also useful in a wide variety of non-surgical applications, including industrial processes, wherein materials are desired to be selectively removed in a very localized region.

Abstract: The present disclosure deals with ultrasonically selectively dissolving solid and semi-solid unwanted materials, such as vitreous gels, membranes, cataracts and similar materials in ophthalmic operation applications, for example, by radiating from a physically small source, high-frequency, preferably pulsed, acoustic waves, while positioning the material to be selectively locally dissolved by such waves at a selected region sometimes in contact with or near-contact or within a short distance from the source of the order of a millimeter or so, at which the propagated acoustic wave energy can effect such phenomena as, for example, localized cytolysis of the material at the selected region thereof substantially normal to the wavefront of the radiated acoustic wave region, and without substantial damage to the portions of the material external to said selected region, and with adjustment to obviate any substantial temperature rise at the material.