摘要:
A medical procedure utilizes a high-intensity focused ultrasound instrument having an applicator surface, a liquid-containing bolus or expandable chamber acting as a heat sink, and a source of ultrasonic vibrations, the applicator surface being a surface of a flexible wall of the bolus, the source of ultrasonic vibrations being in operative contact with the bolus. The applicator surface is placed in contact with an organ surface of a patient, the source is energized to produce ultrasonic vibrations focused at a predetermined focal region inside the organ, and a temperature of liquid in the bolus is controlled while the applicator surface is in contact with the organ surface to control temperature elevation in tissues of the organ between the focal region and the organ surface to necrose the tissues to within a desired distance from the organ surface.
摘要:
An ultrasonic horn in accordance with the present invention comprises a horn body having a longitudinal transmission axis, a proximal end attachable at least indirectly to a source of ultrasonic vibrations, and a distal end with an active end face. The end face is provided with a plurality of fingers projecting parallel to one another and to the axis.
摘要:
A surgical shield includes an at least partially rigid shield member extending in at least two spatial dimensions, at least one flexible sheet member, and a coupling element. The shield member has an aperture traversable by a surgical instrument, while the coupling element is provided on the shield member for releasably connecting the shield member to the instrument. The flexible sheet member is attached to the shield member so as to define, with the shield member, an enclosure having one open side opposing the shield member.
摘要:
An ultrasonically excitable tool or probe is provided with a central bore, and a coupling for attachment to an ultrasonic transducer also provided with a central bore. Fluid may be injected along the communicating bores for filling a bowl or concavity on a distal end of the tool. Upon energization of the transducer, fluid in the concavity serves as a conventional ultrasonic cleaning bath for depending parts which the tool may be raised to accommodate in the concavity. This cleaning may be achieved in a confined space where the presence of the transducer is impossible or impermissible, which is further facilitated by the existence of an extended handle or shaft portion, containing the bore, on the ultrasonic tool. A particular shape of the concavity is found to have unexpected utility in creating and focussing an atomized spray.
摘要:
Spinal pain is treated non-invasively by operating a scanning apparatus to locate a spinal disc afflicted with cracks or fissures, and applying waveform energy to the afflicted spinal disc to heat the spinal disc sufficiently to modify collagen fibers of the spinal disc and destroy pain receptors in the spinal disc. The scanning apparatus may be an ultrasound scanner, while the treatment waveform energy may be ultrasonic waveform energy. The applying of the waveform energy includes generating ultrasonic pressure waves in the spinal disc.
摘要:
A surgical instrument comprises, in accordance with the present invention, an elongate probe, a sleeve, a sleeve extension and at least one cauterization electrode. The probe is an ultrasonic element, serving to convey ultrasonic vibrations (as standing waves) to organic tissues at a surgical site. The probe has a working tip and a longitudinal axis. The sleeve surrounds the probe with the working tip of the probe projecting from a distal or free end of the sleeve. The sleeve extension is disposed at the distal or free end of the sleeve and defines a multiplicity of apertures having respective axes oriented at least substantially parallel to the longitudinal axis. The electrode has a distal or free end removably inserted through one of the apertures.
摘要:
A surgical shield includes an at least partially rigid shield member extending in at least two spatial dimensions, at least one flexible sheet member, and a coupling element. The shield member has an aperture traversable by a surgical instrument, while the coupling element is provided on the shield member for releasably connecting the shield member to the instrument. The flexible sheet member is attached to the shield member so as to define, with the shield member, an enclosure having one open side opposing the shield member.