RU2019119396A - Ультразвуковое устройство и акустический компонент для использования в таком устройстве - Google Patents

Ультразвуковое устройство и акустический компонент для использования в таком устройстве Download PDF

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RU2019119396A
RU2019119396A RU2019119396A RU2019119396A RU2019119396A RU 2019119396 A RU2019119396 A RU 2019119396A RU 2019119396 A RU2019119396 A RU 2019119396A RU 2019119396 A RU2019119396 A RU 2019119396A RU 2019119396 A RU2019119396 A RU 2019119396A
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layer
electroactive
electroactive material
arrangement
component according
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RU2019119396A
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RU2019119396A3 (ru
RU2756022C2 (ru
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Марк Томас ДЖОНСОН
Франсискус Йоханнес Герардус ХАККЕНС
Роланд Александер ВАН ДЕ МОЛЕНГРАФ
Дан Антон ВАН ДЕН ЭНДЕ
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Конинклейке Филипс Н.В.
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4272—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue
    • A61B8/4281—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue characterised by sound-transmitting media or devices for coupling the transducer to the tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
    • A61B8/4494—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer characterised by the arrangement of the transducer elements
    • A—HUMAN NECESSITIES
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    • A61B8/54—Control of the diagnostic device
    • A—HUMAN NECESSITIES
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    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
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    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
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    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • G01S15/8915—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array
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    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0688—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction with foil-type piezoelectric elements, e.g. PVDF
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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Claims (20)

1. Акустический связующий компонент (32) для позиционирования между компоновкой (30) ультразвуковых преобразователей и материалом (34), подлежащим обработке или визуализации, содержащий:
исполнительный механизм на основе электроактивного материала, содержащий слоистую резонансную структуру на основе электроактивного материала из по меньшей мере одного слоя электроактивного материала с настраиваемой толщиной и дополнительного слоя материала с другим акустическим полным сопротивлением, причем исполнительный механизм на основе электроактивного материала выполнен с возможностью принимать ультразвуковой сигнал, имеющий некоторую частоту, от компоновки ультразвуковых преобразователей и передавать этот ультразвуковой сигнал к материалу, подлежащему обработке или визуализации; и
контроллер (36), причем контроллер выполнен с возможностью электрически управлять исполнительным механизмом на основе электроактивного материала для реализации настройки резонансной частоты для реализации посредством этого сдвига резонансной частоты.
2. Компонент по п. 1, в котором слоистая структура имеет по меньшей мере два разных материала (40, 42) с разными акустическими полными сопротивлениями.
3. Компонент по п. 2, в котором первый (40) из материалов слоистой структуры содержит электроактивный полимерный материал на основе PVDF, и второй (42) из материалов слоистой структуры содержит диэлектрический электроактивный полимерный материал на основе силоксана.
4. Компонент по любому из предшествующих пунктов, в котором:
электроактивный материал имеет ассоциативно связанные электроды исполнительного механизма, и дополнительный слой материала является пассивным слоем, или
как слой электроактивного материала, так и дополнительный слой материала являются электроактивными материалами, каждый из которых имеет ассоциативно связанные электроды исполнительного механизма.
5. Компонент по п. 4, в котором слоистая структура содержит верхний (47) и нижний (48) слой с первым акустическим полным сопротивлением и средний слой (49) со вторым, меньшим акустическим полным сопротивлением.
6. Компонент по любому из предшествующих пунктов, в котором слой электроактивного материала и/или дополнительный слой материала содержат частицы наполнителя для настройки акустического полного сопротивления.
7. Компонент по п. 6, в котором частицы наполнителя содержат керамические частицы или металлические частицы, покрытые непроводящим покрытием.
8. Компонент по п. 6 или 7, содержащий сегментированную электродную компоновку, ассоциативно связанную с исполнительным механизмом на основе слоя электроактивного материала.
9. Компонент по любому из пп. 6-8, причем исполнительный механизм на основе электроактивного материала содержит слой электроактивного материала с частицами и слой электроактивного материала без частиц.
10. Компонент по любому из предшествующих пунктов, в котором слой электроактивного материала содержит слой электроактивного полимера на основе PVDF.
11. Ультразвуковое устройство, содержащее:
компоновку (30) преобразователей;
акустический связующий компонент по любому из предшествующих пунктов, выполненный с возможностью быть расположенным между компоновкой преобразователей и материалом, подлежащим обработке или визуализации.
12. Ультразвуковое устройство по п. 11, в котором акустический связующий компонент является акустически пропускающим окном поверх компоновки преобразователей.
13. Ультразвуковое устройство по п. 12, в котором акустический связующий компонент находится на расстоянии от компоновки преобразователей.
14. Ультразвуковое устройство по п. 11, 12 или 13, в котором компоновка преобразователей выполнена с возможностью генерировать ультразвуковые волны, имеющие минимальную длину волны в материале, слой электроактивного материала содержит частицы наполнителя, имеющие максимальный линейный размер, составляющий менее чем 20% упомянутой минимальной длины волны.
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