WO2004071581A1 - Multi-focus ultrasonic transducer - Google Patents

Multi-focus ultrasonic transducer Download PDF

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Publication number
WO2004071581A1
WO2004071581A1 PCT/CN2003/000730 CN0300730W WO2004071581A1 WO 2004071581 A1 WO2004071581 A1 WO 2004071581A1 CN 0300730 W CN0300730 W CN 0300730W WO 2004071581 A1 WO2004071581 A1 WO 2004071581A1
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WO
WIPO (PCT)
Prior art keywords
focus
ultrasonic transducer
focal length
concave spherical
piezoelectric ceramic
Prior art date
Application number
PCT/CN2003/000730
Other languages
French (fr)
Chinese (zh)
Inventor
Fucheng Sun
Yanzhu Qu
Jiwei Jiang
Jiaxian Dong
Haijin Ma
Dawei Li
Jun Shu
Original Assignee
Shanghai A & S Science Technology Development Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai A & S Science Technology Development Co., Ltd. filed Critical Shanghai A & S Science Technology Development Co., Ltd.
Priority to AU2003261584A priority Critical patent/AU2003261584A1/en
Publication of WO2004071581A1 publication Critical patent/WO2004071581A1/en

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices
    • G10K15/043—Sound-producing devices producing shock waves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N7/02—Localised ultrasound hyperthermia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0056—Beam shaping elements
    • A61N2007/0065—Concave transducers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N2007/0078—Ultrasound therapy with multiple treatment transducers

Definitions

  • the invention relates to a multi-focus multi-focus ultrasound transducer for treating tumors, and belongs to the field of medical equipment.
  • Technical background At present, there are mainly ultrasonic focusing methods at home and abroad: lens focusing, spherical ceramic plate arrangement, concave spherical self-focusing, double focusing, etc. These methods can only form one focus. In the treatment of tumors, it takes a long time to scan a larger tumor with one focus.
  • Object of the invention is mainly ultrasonic focusing methods at home and abroad: lens focusing, spherical ceramic plate arrangement, concave spherical self-focusing, double focusing, etc.
  • the purpose of the present invention is to overcome the disadvantage that the existing single-focus ultrasonic transducer requires a long time to treat a large tumor, and provides a multi-focus and multi-focus ultrasonic transducer.
  • Summary of the invention The technical solution of the present invention is: it is composed of multiple focal length components arranged at intervals around the same center of the circle, each component is respectively composed of 2-4 concave spherical spherical self-focusing piezoelectric ceramics, and is symmetrically distributed on a conical surface, each The respective focal points of the components converge to form multiple focal points on a common axis. Since the focal points of multiple concave spherical self-focusing piezoelectric ceramics are brought together, a high sound intensity can be obtained.
  • each group of piezoelectric ceramics is different, and multiple acoustic focal points are formed on the entire transducer.
  • the treatment process can be completed in a short period of time.
  • a dual focus focus ultrasound transducer can complete the treatment process in nearly half the time.
  • Another advantage of the present invention is that in different situations, a long focal length group or a short focal length group can be turned on separately to meet different needs. For example, using a long-focus piezoelectric ceramic sheet alone for the treatment of deep tumors and a short-focus piezoelectric ceramic sheet alone for the treatment of superficial tumors can improve the treatment effect.
  • Figure 1 shows the structure of a long focal length transduction group.
  • FIG. 2 is a schematic structural diagram of a short focal length transduction group
  • Figure 3 is a schematic diagram of the structure of a medium focal length transducer
  • Figure 4 is a schematic diagram of the layout of a long and short focal length transducer
  • Fig. 5 is a schematic diagram showing the arrangement of a long-short-medium focal length transducing component. Summary of the Invention
  • Figures 1, 2, and 4 show a dual-focus, dual-focus ultrasonic transducer. It consists of a long focal length component 3 and a short focal length component 2 spaced at 90 ° around the same center. Each component consists of 2-4.
  • the concave concave spherical self-focusing piezoelectric ceramic sheet 6 is composed of symmetrically distributed on a conical surface, and the respective focal points are brought together to form two focal points 1 and 9.
  • the concave spherical self-focusing piezoelectric ceramic sheet 6 is placed in a circular shell 4 and fixed by a pressing frame 7, and the circular shell 4 is fixed on a mounting plate 8 by a nut 5.
  • Example 2 Example 2.
  • the three-focus triple-focused ultrasonic transducer is composed of long, middle and short three focal length components arranged at 60 ° intervals around the same circle center.
  • the focal points are brought together to form three focal points 1, 9, 11, and the composition and installation method of the middle focal length component 10 are also the same as those of the long and short focal length components in Embodiment 1.
  • the bending angle of the mounting plate 8 in the above two embodiments should be accurately calculated according to the focal length of the concave spherical self-focusing piezoelectric ceramic sheet 6.
  • the present invention can form a multi-focus multi-focus ultrasonic transducer from a plurality of 2, 3, 4, 5, ... multiple different focal length components. Depending on the depth of the tumor, different focal lengths and different frequencies corresponding to different ceramic sheet thicknesses are used for treatment.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The present invention relates to a multi-focus ultrasonic transducer for treating tumour. The said multi-focus ultrasonic transducer is composed of two or more focus assemblies with two or more focal depths. The said focus assemblies are separately mounted around the same center of a circle. Each assembly is respectively composed of two-four concave spherical self-focused piezoelectric ceramic pieces (6) which are symmetrically installed along a conic underside. The respective focus of each assembly is on the common axis.

Description

多焦点多重聚焦超声换能器 技术领域  Multi-focus multi-focus ultrasound transducer TECHNICAL FIELD
本发明涉及一种用于治疗肿瘤的多焦点多重聚焦超声换能器，属于医疗 设备领域。 技术背景 目前国内外超声波聚焦的方法主要有： 透镜聚焦、平板陶瓷片球面布置、 凹球面自聚焦、 双重聚焦等， 这些方法都只能形成一个焦点。 在肿瘤的治疗 上， 以一个焦点扫描较大的肿瘤需要化费较长的时间。 发明目的  The invention relates to a multi-focus multi-focus ultrasound transducer for treating tumors, and belongs to the field of medical equipment. Technical background At present, there are mainly ultrasonic focusing methods at home and abroad: lens focusing, spherical ceramic plate arrangement, concave spherical self-focusing, double focusing, etc. These methods can only form one focus. In the treatment of tumors, it takes a long time to scan a larger tumor with one focus. Object of the invention
本发明的目的是为了克服现有单焦点超声换能器在治疗较大的肿瘤需 要化费较长时间的缺点， 提供一种多焦点多重聚焦超声换能器。 发明概要 本发明的技术方案是： 它由多种焦距组件围绕同一圆心间隔布置构成， 每一组件分别由 2-4片凹球面自聚焦压电陶瓷片构成，在圆锥面上对称分布， 每一组件各自的焦点分别汇聚， 在公共轴线上形成多个焦点。 由于多片凹球面自聚焦压电陶瓷片各自的焦点汇聚在一起，可以得到很 高的声强。 各组压电陶瓷片的焦距不同， 在整个换能器上形成多个声焦点。 这与单焦点的超声换能器相比， 可以在很短的时间内完成治疗过程， 例如， 用双焦点聚焦超声换能器， 则可以在接近一半的时间内完成治疗过程。本发 明的另一个优点是： 在不同的情况下， 可以单独开启长焦距组或短焦距组， 适应不同的需要。 例如， 治疗深部肿瘤单独使用长焦距的压电陶瓷片组， 而 治疗浅表肿瘤则单独使用短焦距压电陶瓷片组， 则可提高治疗效果。 附图说明 The purpose of the present invention is to overcome the disadvantage that the existing single-focus ultrasonic transducer requires a long time to treat a large tumor, and provides a multi-focus and multi-focus ultrasonic transducer. Summary of the invention The technical solution of the present invention is: it is composed of multiple focal length components arranged at intervals around the same center of the circle, each component is respectively composed of 2-4 concave spherical spherical self-focusing piezoelectric ceramics, and is symmetrically distributed on a conical surface, each The respective focal points of the components converge to form multiple focal points on a common axis. Since the focal points of multiple concave spherical self-focusing piezoelectric ceramics are brought together, a high sound intensity can be obtained. The focal length of each group of piezoelectric ceramics is different, and multiple acoustic focal points are formed on the entire transducer. Compared with a single focus ultrasound transducer, the treatment process can be completed in a short period of time. For example, a dual focus focus ultrasound transducer can complete the treatment process in nearly half the time. Another advantage of the present invention is that in different situations, a long focal length group or a short focal length group can be turned on separately to meet different needs. For example, using a long-focus piezoelectric ceramic sheet alone for the treatment of deep tumors and a short-focus piezoelectric ceramic sheet alone for the treatment of superficial tumors can improve the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS
图 1为长焦距换能组结构示意图，  Figure 1 shows the structure of a long focal length transduction group.
图 2为短焦距换能组结构示意图；  FIG. 2 is a schematic structural diagram of a short focal length transduction group;
图 3为中焦距换能组结构示意图； 图 4为长短焦距换能组件布置示意图；  Figure 3 is a schematic diagram of the structure of a medium focal length transducer; Figure 4 is a schematic diagram of the layout of a long and short focal length transducer;
图 5为长短中焦距换能组件布置示意图。 发明内容  Fig. 5 is a schematic diagram showing the arrangement of a long-short-medium focal length transducing component. Summary of the Invention
实施例 1  Example 1
由图 1、 图 2、 图 4所示为双焦点双重聚焦超声换能器， 它由长焦距组 件 3和短焦距组件 2围绕同一圆心间隔成 90° 布置构成， 每一组件分别由 2-4片凹球面自聚焦压电陶瓷片 6构成， 在圆锥面上对称分布， 各自的焦点 汇聚在一起形成两个焦点 1和 9。凹球面自聚焦压电陶瓷片 6置于圆壳 4中， 由压框 7固定， 圆壳 4由螺母 5固定在安装板 8上。 实施例 2 .  Figures 1, 2, and 4 show a dual-focus, dual-focus ultrasonic transducer. It consists of a long focal length component 3 and a short focal length component 2 spaced at 90 ° around the same center. Each component consists of 2-4. The concave concave spherical self-focusing piezoelectric ceramic sheet 6 is composed of symmetrically distributed on a conical surface, and the respective focal points are brought together to form two focal points 1 and 9. The concave spherical self-focusing piezoelectric ceramic sheet 6 is placed in a circular shell 4 and fixed by a pressing frame 7, and the circular shell 4 is fixed on a mounting plate 8 by a nut 5. Example 2.
由图 1、 图 2、 图 3及图 5所示， 三焦点三重聚焦超声换能器， 它由长、 中、短三焦距组件围绕同一圆心成 60° 间隔布置构成，三焦距组件构成各自 的焦点汇聚在一起形成三个焦点 1、 9、 11， 中焦距组件 10构成及安装方式 亦和实施例 1中的长短焦距组件相同。  As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 5, the three-focus triple-focused ultrasonic transducer is composed of long, middle and short three focal length components arranged at 60 ° intervals around the same circle center. The focal points are brought together to form three focal points 1, 9, 11, and the composition and installation method of the middle focal length component 10 are also the same as those of the long and short focal length components in Embodiment 1.
上述两实施例中的安装板 8的弯折角度应根据凹球面自聚焦压电陶瓷片 6的焦距准确计算。 由两实施例所示， 本发明可以由 2、 3、 4、 5...... 多个 不同焦距组件构成多焦点多重聚焦超声换能器。根据肿瘤的深浅采用不同的 焦距及相应于不同陶瓷片厚度得到不同的频率来治疗。  The bending angle of the mounting plate 8 in the above two embodiments should be accurately calculated according to the focal length of the concave spherical self-focusing piezoelectric ceramic sheet 6. As shown in the two embodiments, the present invention can form a multi-focus multi-focus ultrasonic transducer from a plurality of 2, 3, 4, 5, ... multiple different focal length components. Depending on the depth of the tumor, different focal lengths and different frequencies corresponding to different ceramic sheet thicknesses are used for treatment.

Claims

权利要求 Rights request
1、一种多焦点多重聚焦超声换能器， 其特征在于， 它由多种焦距组件围 绕同一圆心间隔布置构成， 每一组件分别由 2-4片凹球面自聚焦压电陶瓷片 构成， 在圆锥面上对称分布， 各自的焦点汇聚在公共轴线上形成多个焦点。  1. A multi-focus multi-focus ultrasonic transducer, characterized in that it comprises a plurality of focal length components arranged at intervals around the same circle center, and each component is respectively composed of 2-4 concave spherical self-focusing piezoelectric ceramic sheets, Symmetrically distributed on the conical surface, the respective focal points converge on a common axis to form multiple focal points.
2、 根据权利要求 1所述的多焦点多重聚焦超声换能器， 其特征在于， 所述的凹球面自聚焦压电陶瓷片置于圆壳中， 由压框固定， 圆壳由螺母固定 在安装板上。  2. The multi-focus and multi-focus ultrasonic transducer according to claim 1, wherein the concave spherical self-focusing piezoelectric ceramic sheet is placed in a round shell, fixed by a pressing frame, and the round shell is fixed by a nut. Mounting plate.
PCT/CN2003/000730 2003-02-11 2003-09-01 Multi-focus ultrasonic transducer WO2004071581A1 (en)

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CN03228743.7 2003-02-11
CNU032287437U CN2608035Y (en) 2003-02-11 2003-02-11 Multi-focus ultra-sonic transducer

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU171512U1 (en) * 2016-06-10 2017-06-02 Общество с ограниченной ответственностью "Центр Сертификации и Контроля" (ООО "ЦСК") Ultrasonic antenna array
US11399695B2 (en) 2017-07-19 2022-08-02 BSH Hausgeräte GmbH Household dishwasher machine and method for operating a household dishwasher machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100490924C (en) 2004-12-27 2009-05-27 赖宁磊 High intensity powerful ultrasonic transducer with quasi-self focusing

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US4401910A (en) * 1981-11-30 1983-08-30 Analogic Corporation Multi-focus spiral ultrasonic transducer
US5072735A (en) * 1988-06-21 1991-12-17 Kabushiki Kaisha Toshiba Ultrasonic imaging apparatus
US5738098A (en) * 1995-07-21 1998-04-14 Hewlett-Packard Company Multi-focus ultrasound lens
CN1288765A (en) * 2000-10-26 2001-03-28 上海交通大学 Multielement self-focusing supersonic transducer
CN2460061Y (en) * 2000-08-23 2001-11-21 范英 Multi-focal rotary ultrosonic focusing device for high intensity ultrosonic therapying tumor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401910A (en) * 1981-11-30 1983-08-30 Analogic Corporation Multi-focus spiral ultrasonic transducer
US5072735A (en) * 1988-06-21 1991-12-17 Kabushiki Kaisha Toshiba Ultrasonic imaging apparatus
US5738098A (en) * 1995-07-21 1998-04-14 Hewlett-Packard Company Multi-focus ultrasound lens
CN2460061Y (en) * 2000-08-23 2001-11-21 范英 Multi-focal rotary ultrosonic focusing device for high intensity ultrosonic therapying tumor
CN1288765A (en) * 2000-10-26 2001-03-28 上海交通大学 Multielement self-focusing supersonic transducer

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Title
RESEARCH DISCOURSE, vol. 399, no. 033, 10 July 1997 (1997-07-10) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU171512U1 (en) * 2016-06-10 2017-06-02 Общество с ограниченной ответственностью "Центр Сертификации и Контроля" (ООО "ЦСК") Ultrasonic antenna array
US11399695B2 (en) 2017-07-19 2022-08-02 BSH Hausgeräte GmbH Household dishwasher machine and method for operating a household dishwasher machine

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AU2003261584A1 (en) 2004-09-06

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