JP4833219B2 - 圧電素子複合変換器 - Google Patents
圧電素子複合変換器 Download PDFInfo
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- JP4833219B2 JP4833219B2 JP2007540042A JP2007540042A JP4833219B2 JP 4833219 B2 JP4833219 B2 JP 4833219B2 JP 2007540042 A JP2007540042 A JP 2007540042A JP 2007540042 A JP2007540042 A JP 2007540042A JP 4833219 B2 JP4833219 B2 JP 4833219B2
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- Prior art keywords
- transducer
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- imaging device
- piezoelectric ceramic
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
-
- 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
-
- 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
- B06B1/0607—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 using multiple elements
- B06B1/0622—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 using multiple elements on one surface
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
- H10N30/852—Composite materials, e.g. having 1-3 or 2-2 type connectivity
-
- 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
- A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
- A61B8/445—Details of catheter construction
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Gynecology & Obstetrics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Description
Claims (27)
- 超音波撮像装置であって、
生体内へと挿入することができ、且つ、生体の内部を撮像するように構成されている、撮像装置を含んでおり、該撮像装置が、圧電素子複合型変換器を含み、
前記圧電素子複合型変換器は、平面から超音波エネルギーを発信するように構成され、且つ圧電セラミック材料の複数の区分を含み、前記圧電セラミック材料の複数の区分は、
a)ポリマー材料の複数の区分と交互に設けられており、前記圧電セラミック材料は、前記圧電セラミック材料とポリマー材料とが複数の伸長区分を構成するように、前記ポリマー材料の伸長する区分と共に並べられて伸張しており、前記圧電セラミック材料の区分は、伸張している長手方向に渡って厚みが変化しており、またはb)柱状に構成され、ポリマー材料のベース区分内に位置する複数の区分に並べられて、前記ポリマー材料のベース区分内において分散しており、前記柱状の圧電セラミック材料の区分は、前記平面の表面から裏面への長手方向に渡って厚みが変化しており、
前記変換器は、少なくとも9MHzの中心周波数を有する、
超音波撮像装置。 - 超音波撮像装置であって、
生体内へと挿入することができ、且つ、生体の内部を撮像するように構成されている、撮像装置を含んでおり、該撮像装置が、圧電素子複合型変換器を含み、
前記圧電素子複合型変換器は、平面から超音波エネルギーを発信するように構成され、且つ圧電セラミック材料の複数の区分を含み、前記圧電セラミック材料の複数の区分は、ポリマー材料の複数の区分と交互に設けられており、前記圧電セラミック材料は、前記圧電セラミック材料とポリマー材料とが複数の伸長区分を構成するように、前記ポリマー材料の伸長する区分と共に並べられて伸張しており、前記圧電セラミック材料の区分は、伸張している長手方向に渡って厚みが変化しており、
前記変換器は、少なくとも9MHzの中心周波数を有し、
前記圧電セラミック材料と、ポリマー材料とが、2−2構成を含有しているものである、
超音波撮像装置。 - 超音波撮像装置であって、
生体内へと挿入することができ、且つ、生体の内部を撮像するように構成されている、撮像装置を含んでおり、該撮像装置が、圧電素子複合型変換器を含み、
前記圧電素子複合型変換器は、平面から超音波エネルギーを発信するように構成され、且つ圧電セラミック材料の複数の区分を含み、前記圧電セラミック材料の複数の区分は、柱状に構成され、ポリマー材料のベース区分内に位置する複数の区分に並べられて、前記ポリマー材料のベース区分内において分散しており、前記柱状の圧電セラミック材料の区分は、前記平面の表面から裏面への長手方向に渡って厚みが変化しており、
前記変換器は、少なくとも9MHzの中心周波数を有し、
前記圧電セラミック材料と、ポリマー材料とが、1−3構成を含有しているものである、
超音波撮像装置。 - 変換器が、1以上の整合層を有している、請求項1に記載の装置。
- 変換器が、単一要素変換器である、請求項1に記載の装置。
- 単一要素変換器が、プレート状に構成されている、請求項5に記載の装置。
- プレートの外側エッジが、曲げられている、請求項6に記載の装置。
- プレートの外側エッジが、実質多角形である、請求項6に記載の装置。
- プレートの外側エッジが、実質4角形である、請求項8に記載の装置。
- プレートの外側エッジが、実質6角形である、請求項8に記載の装置。
- プレートの外側エッジが、実質8角形である、請求項8に記載の装置。
- プレートの外側エッジが、部分的に曲げられており、且つ、部分的に直線状になっている、請求項6に記載の装置。
- 変換器が、アレイ状に構成されている、請求項1に記載の装置。
- 変換器が、複数の電極に結合されている、請求項13に記載の装置。
- 変換器が、複数の変換器要素を含んでいる、請求項13に記載の装置。
- 複数の変換器要素が、互いに結合されている、請求項15に記載の装置。
- 複数の変換器要素が、横列状に並べられている、請求項15に記載の装置。
- アレイが、1次元アレイである、請求項17に記載の装置。
- 複数の変換器要素が、複数の横列に並べられているものであり、各横列が複数の変換器要素を含んでいるものである、請求項15に記載の装置。
- 複数の変換器要素が、各列内にM個の変換器要素が位置している、M横列の状態に並べられているものである、請求項19に記載の装置。
- アレイが、2次元アレイである、請求項19に記載の装置。
- アレイが、開口を有している第1変換器要素と、開口内に位置している第2変換器要素と、を含んでいるものである、請求項15に記載の装置。
- アレイが、環状アレイである、請求項15に記載の装置。
- 変換器要素が、同軸上に並べられている、請求項23に記載の装置。
- アレイが、線形アレイである、請求項13に記載の装置。
- アレイが、位相アレイである、請求項13に記載の装置。
- 超音波撮像装置であって、
生体内へと挿入することができ、且つ、生体の内部を撮像するように構成されている、撮像装置を含んでおり、該撮像装置が、圧電素子複合型変換器を含み、
前記圧電素子複合型変換器は、平面から超音波エネルギーを発信するように構成され、且つ圧電セラミック材料の複数の区分を含み、前記圧電セラミック材料の複数の区分は、
a)ポリマー材料の複数の区分と交互に設けられており、前記圧電セラミック材料は、前記圧電セラミック材料とポリマー材料とが複数の伸長区分を構成するように、前記ポリマー材料の伸長する区分と共に並べられて伸張しており、前記圧電セラミック材料の区分は、伸張している長手方向に渡って厚みが変化しており、またはb)柱状に構成され、ポリマー材料のベース区分内に位置する複数の区分に並べられて、前記ポリマー材料のベース区分内において分散しており、前記柱状の圧電セラミック材料の区分は、前記平面の表面から裏面への長手方向に渡って厚みが変化しており、
前記変換器が、20MHz乃至50MHzの範囲の中心周波数を有する、
超音波撮像装置。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/984,664 US20060100522A1 (en) | 2004-11-08 | 2004-11-08 | Piezocomposite transducers |
| US10/984,664 | 2004-11-08 | ||
| PCT/US2005/039848 WO2006052685A1 (en) | 2004-11-08 | 2005-11-01 | Piezocomposite transducers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008518721A JP2008518721A (ja) | 2008-06-05 |
| JP4833219B2 true JP4833219B2 (ja) | 2011-12-07 |
Family
ID=35677464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007540042A Expired - Fee Related JP4833219B2 (ja) | 2004-11-08 | 2005-11-01 | 圧電素子複合変換器 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20060100522A1 (ja) |
| EP (2) | EP1829127B1 (ja) |
| JP (1) | JP4833219B2 (ja) |
| AT (1) | ATE481742T1 (ja) |
| CA (1) | CA2586657A1 (ja) |
| DE (1) | DE602005023654D1 (ja) |
| ES (1) | ES2349832T3 (ja) |
| WO (1) | WO2006052685A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2292146B1 (en) | 2016-03-09 |
| DE602005023654D1 (de) | 2010-10-28 |
| EP1829127B1 (en) | 2010-09-15 |
| WO2006052685A1 (en) | 2006-05-18 |
| EP1829127A1 (en) | 2007-09-05 |
| CA2586657A1 (en) | 2006-05-18 |
| JP2008518721A (ja) | 2008-06-05 |
| ATE481742T1 (de) | 2010-10-15 |
| US20060100522A1 (en) | 2006-05-11 |
| ES2349832T3 (es) | 2011-01-11 |
| EP2292146A1 (en) | 2011-03-09 |
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