Patents Assigned to EDAP International
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Patent number: 5431621Abstract: A Process and device of location and destruction of an anatomic target includes the periodic emission of a focused treatment beam of elastic waves and an echographic image of the target formed in real time during the treatment period by means of an ultrasonic auxiliary beam carrying out a scanning substantially centered in a symmetry plane of the focused treatment beam. Also displayed superimposed on the target image is a mark showing the theoretical position of the focal point of the treatment beam. Selection of the image forming echoes reflected from the target as a function of the coordinates of the region of impact of the auxiliary beam with respect to the echographic source is effected and the treatment and auxiliary sources are simultaneously displaced under the control of signals derived from the selected echoes until the coincidence between the image of the mark and the image of the target object is reached where the treatment beam emission is then triggered.Type: GrantFiled: May 15, 1991Date of Patent: July 11, 1995Assignee: EDAP InternationalInventor: Jacques Dory
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Patent number: 5354258Abstract: An extracorporeal ultra-high-speed ultrasound hyperthermia treatment method consisting in transmitting and focussing on the tumor ultrasound wave trains at frequencies between 0.5 and 10 MHz with peak electric powers which may reach 20 Kw or more, the parameters which define the concentration of the treatment beam in the focal spot and the power being determined so that, irrespective of the depth and the nature of the tissue, the treatment time is in the order of that enabling significant destruction, preferably total destruction, of the target during the linear part of a curve showing the temperature increase as a function of time.Type: GrantFiled: January 7, 1993Date of Patent: October 11, 1994Assignee: EDAP InternationalInventor: Jacques Dory
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Patent number: 5158070Abstract: The method for the localized destruction of soft structures using negative pressure elastic waves, comprises the steps of generating at a predetermined rate comprised between a few Hz and 3 KHz, trains of elastic pressure waves, said waves having a frequency between 0.3 and 10 MHz, each of said trains having a duration between 1 microsecond and 1 millisecond and comprising negative going oscillations; focussing said waves into a beam; transmitting and directing said beam onto the target through a liquid coupling medium and adjusting the power of said elastic pressure wave at a predetermined value.Type: GrantFiled: July 18, 1990Date of Patent: October 27, 1992Assignee: EDAP International, S.A.Inventor: Jacques Dory
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Patent number: 5150712Abstract: A hyperthermia treatment apparatus combining a generator of a focused ultrasonic beam comprising a main high frequency electric wave emitter and a main piezoelectric transducer whose active surface is focusing, with an echography device comprising an auxiliary high frequency electric pulse generator associated with an auxiliary piezoelectric transducer and means for causing the zone to be treated to be swept by the ultrasonic examination beam generated by said auxiliary transducer; and with switching and adjustment means for causing, during a main treatment and checking operating mode, emission of said focused beam by said main transducer energized by said main emitter during periodic time intervals separated by shorter time intervals during which the emission of the examination beam and the formation of echographic images are effected.Type: GrantFiled: January 9, 1991Date of Patent: September 29, 1992Assignee: EDAP International, S.A.Inventor: Jacques Dory
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Patent number: 5150711Abstract: An extracorporeal ultra-high-speed ultrasound hyperthermia treatment device adapted to enable focussed emission of ultrasound wave trains at frequencies between 0.5 and 10 MHz with peak powers between 10 kW and a few hundred watts, the parameters which define the concentration of the treatment beam in the focal spot and the power being determined so that, irrespective of the depth and the nature of the tissue, the treatment time is in the order of that enabling significant destruction, preferably total destruction, of the target during the linear part of a curve showing the temperature increase as a function of time.Type: GrantFiled: July 23, 1991Date of Patent: September 29, 1992Assignee: EDAP International, S.A.Inventor: Jacques Dory
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Patent number: 5143074Abstract: An ultrasonic treatment device is divulged comprising a power transducer in the form of a spherical cup serving both as treatment wave generator and as echographic transceiver, wherein the transducer is caused to oscillate (motor 2) during the treatment, so as to obtain sectorial B type scanning and it is excited (circuits 1 to 14) with treatment waves only in a restricted angular scanning sector and with echographic waves in the rest of the scanned sector.Type: GrantFiled: May 3, 1991Date of Patent: September 1, 1992Assignee: EDAP InternationalInventor: Jacques Dory
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Patent number: 5143073Abstract: The disclosure relates to a device for locating and disintegrating body anomalies and displaying real time images of a body anomaly during treatment. The images are formed between pulses of disintegrating treatment waves by an ultrasound scanner in line with a shock wave treatment beam.Type: GrantFiled: June 14, 1988Date of Patent: September 1, 1992Assignee: EDAP International, S.A.Inventor: Jacques Dory
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Patent number: 5111822Abstract: An article of manufacture which is used in medical treatment is a concave wave focusing device and a piezoelectric surface coupled to a target locating and treatment aiming ultrasound transducer which is located between the target and the surface and which scans the target to display a target image in coincidence with a visible indication of the focal point of the focusing device.Type: GrantFiled: May 16, 1989Date of Patent: May 12, 1992Assignee: EDAP International, S.A.Inventor: Jacques Dory
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Patent number: 5080101Abstract: The disclosure relates to a method of ultrasonically locating and aiming treatment at a body target and displaying real time images of the body target. A treatment transducer produces a treatment beam of wave vibrations focused on said target and a separate scanning transducer displays images of said target on a display device during treatment with said beam together with a coincident image of a cursor which identifies the focal spot of the treatment beam.Type: GrantFiled: June 19, 1989Date of Patent: January 14, 1992Assignee: EDAP International, S.A.Inventor: Jacques Dory
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Patent number: 5080102Abstract: A hyperthermia treatment apparatus combining a generator of a focused ultrasonic beam comprising a main high frequency electric wave emitter and a main piezoelectric transducer whose active surface is focusing, with an echography device comprising an auxiliary high frequency electric pulse generator associated with an auxiliary piezoelectric transducer and means for causing the zone to be treated to be swept by the ultrasonic examination beam generated by said auxiliary transducer; and with switching and adjustment means for causing, during a main treatment and checking operating mode, emission of said focused beam by said main transducer energized by said main emitter during periodic time intervals separated by shorter time intervals during which the emission of the examination beam and the formation of echographic images are effected.Type: GrantFiled: April 21, 1989Date of Patent: January 14, 1992Assignee: EDAP International, S.A.Inventor: Jacques Dory
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Patent number: 4995012Abstract: An acoustic filter is provided for attenuating or suppressing the negative pressure half-waves of an elastic wave, comprising an enclosure containing a liquid whose saturating vapor tension is close to the atmospheric pressure. A pump causes the liquid to flow and a regulator fixes its temperature.Type: GrantFiled: August 8, 1989Date of Patent: February 19, 1991Assignee: EDAP InternationalInventor: Jacques Dory
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Patent number: 4991151Abstract: An elastic pulse generator including a piezo-electric or magnetrostrictive transducer which is focussing or associated with a focussing device, having a plurality of elementary emitting surfaces generating elastic signals. These signals are superimposed, after propagation over a certain distance, in a focal region. Several groups of elementary emitting surfaces are periodically exciting at a predetermined rate with respective separate electric signals. The emitting surfaces belong to transducer elements electrically isolated from each other and having different transfer functions. Delay lines are provided for phase shifting the elastic signals emitted by the transducer elements.Type: GrantFiled: April 28, 1988Date of Patent: February 5, 1991Assignee: EDAP InternationalInventor: Jacques Dory
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Patent number: 4922917Abstract: A tissue characterization device is provided comprising means for transmitting high carrier frequency ultrasonic pulses to the tissues, means for receiving and converting the echos into high frequency electric signals and means for storing said electric signals with a sampling frequency sufficient for the high frequency information which they contain to be correctly recorded, further comprising means for reading the stored information at a rate less than the sampling frequency and such that the high frequency spectrum is transposed into the range of audible frequencies and means for converting the transposed spectrum into a sound signal.Type: GrantFiled: August 12, 1988Date of Patent: May 8, 1990Assignee: EDAP InternationalInventor: Jacques Dory
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Patent number: 4856107Abstract: An acoustic filter is provided for attenuating or suppressing the negative pressure half-waves of an elastic wave, comprising an enclosure containing a liquid whose saturating vapor tension is close to the atmospheric pressure. A pump causes the liquid to flow and a regulator fixes its temperature.Type: GrantFiled: April 28, 1988Date of Patent: August 8, 1989Assignee: EDAP InternationalInventor: Jacques Dory
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Patent number: RE33590Abstract: A hyperthermia applicator comprises a generator of a focused ultrasonic beam comprising a main high frequency electric wave emitter and a main piezoelectric transducer and an echography device comprising an auxiliary high frequency electric pulse generator associated with an auxiliary piezoelectric transducer which generates an ultrasonic examination beam sweeping the zone to be treated. During a main treatment and checking operating mode, the focused beam is emitted by the main transducer energized by the main emitter during periodic time intervals separated by shorter time intervals. During the shorter time intervals, the examination beam is emitted and echographic images are formed.Type: GrantFiled: November 22, 1988Date of Patent: May 21, 1991Assignee: EDAP International, S.A.Inventor: Jacques Dory