RU2000119766A - FOCUSED IMPACT SYSTEM WITH ULTRASONIC HIGH INTENSITY FOR SCANNING AND TREATING TUMORS - Google Patents

Claims (10)

1. High intensity focused ultrasound system for scanning and treating tumors, consisting of a combined sensor, high intensity energy source, B-mode ultrasound scanner, multidimensional digitally controlled moving device, vacuum degasser, therapeutic couch and computer control system, characterized in that the combined sensor consists of a therapeutic head that generates an ultrasound of the therapeutic effect and a sensor for obtaining images using S ultrasound scanner in B-mode; while it is mounted on a moving device, which consists of a three-dimensional system of rectangular coordinates and a one- or two-dimensional system of rotational coordinates, the upper end of the combined sensor is connected to the central hole of the therapeutic couch through an open water cylinder; in the middle of the therapeutic couch there is a large hole for placing a cylinder of water; the lower part of the water tank is connected to the head of the combined sensor; the combined sensor is mounted on a moving system with a three-dimensional system of rectangular coordinates and a two-dimensional system of rotational coordinates; the combined sensor is also connected to a high-frequency power supply; the B-mode ultrasonic sensor is connected to the B-mode ultrasonic scanner and mounted on the central axis of the combined sensor; the movement system is connected to a digitally controlled scanning system; a water cylinder is connected to a vacuum degasser; the computer control system is independently connected to a high-frequency power supply, an ultrasonic scanner operating in B-mode, a digitally controlled scanning system and a vacuum degasser.  2. A high-intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that the B-mode ultrasonic sensor is installed in the central part of the therapeutic head; at the same time, its adjustment ensures that the focal zone created by the therapeutic head falls into the plane of the image created by the ultrasound scanner operating in B-mode.  3. A high-intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that the surface of the combined sensor emitting ultrasound is located under the part of the body that is exposed and is connected to the patient’s skin through an open water cylinder; in this case, the medium for such a connection is water degassed under vacuum, the acoustic impedance of which is close to that of the human body and which has a low attenuation coefficient for sound vibrations.  4. High intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that the step motor of said displacement device moves the base using a ball screw along a ball path, while the actual position during movement is controlled by a position sensor that senses the signal position and closes the loop control system of the movement system; a multidimensional moving device is formed by combining and sequentially adding a certain number of one-dimensional moving devices.  5. High intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that said high-frequency power supply consists of a signal source, signal modulator, amplifier, matching device, three-phase power supply, manual control unit, computer interface, and display devices; wherein the signal modulator is independently connected to a three-phase power supply, a signal source, a computer interface and an image amplifier; the signal source is independently connected to a three-phase power supply, an amplifier, a display device and a manual control unit; an image amplifier is connected, respectively, with a three-phase power supply and a matching device; moreover, the matching device produces a constant or pulsed, with a frequency of 0.2-0.3 MHz, electrical voltage; the signal source generates a high-frequency sinusoidal low-voltage signal with a small current, which is converted by an electric signal modulation circuit into a constant signal or into a carrier frequency signal of 10-1000 Hz.  6. High intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that said vacuum degasser is an apparatus for vacuum degassing of circulating water, which consists of a vacuum pump, a circulation pump for water, a water compartment, a water temperature controller , a water tank, a combined sensor, and a control circuit, the water compartment is independently connected to a vacuum pump, a water temperature controller, and a circulation pump for water a combined sensor and a cylinder of water; the control circuitry is independently connected to a water circulation pump, a water temperature controller and a vacuum pump; the combined sensor and the water tank are independently connected to a circulation pump for supplying water, which processes the water by a degassing method, which is then used as a coupling medium for ultrasound. 7. A high-intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that the sound power generated by the combined sensor in the focal zone is 100-10000 W / cm ² , while the specified combined sensor has the following technical parameters: distance: 40-280mm; operating frequency for therapeutic exposure to ultrasound 0.2-3.5 MHz; the shape of the focal zone is ellipsoidal; small diameter 1.1-5 mm, large diameter 3.5-12 mm; maximum sound intensity in the center of the focal zone: over 1000 W / cm ² ; focusing angle - 30-120 ^o . 8. High intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that, regardless of the acoustic attenuation coefficient, Ia = (D / d) ² ID, there should be the maximum possible ratio of the average sound intensity in the focal zone and on the surface sensor.  9. A high-intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that it uses a four-coordinate scanning device with digital control and a single-axis rotational head under computer control, with a power source, a B-mode ultrasound scanner and the specified the scanning device all operate continuously.  10. A high intensity focused ultrasound system for scanning and treating tumors according to claim 1, characterized in that said combined sensor is completely enclosed in a shielded shell; the substrate for the water tank and the water tank itself are installed in front of the shielded shell; there is an ultrasonic lens on the sensor core, and in the center of the sensor core is an ultrasonic sensor for operation in B-mode; a piezoceramic element is mounted on the back of the therapeutic head; The electric power of the piezoceramic element for generating ultrasound is supplied via cable.