JPWO2017199779A1 - 超音波照射装置とシステム及び超音波照射方法 - Google Patents
超音波照射装置とシステム及び超音波照射方法 Download PDFInfo
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Abstract
Description
Ultrasound, 以後LIPUS)刺激を、骨折部位に対して接触式の超音波プローブを用いて行う方法を開示している。この方法は骨折箇所にLIPUSによる刺激を与え、骨折の治療促進が出来ることを報告している。ここで超音波プローブに用いられた周波数は、周期0.67μsの1.5MHz、パルス繰り返し周波数(Pulse Repetition Frequency,以後PRFと言う)は1,000Hz(周期1ms)、超音波Duty Factorは20%、空間時間平均の音響強度(Intensity
spatial average temporal average,以後Isata)は30〜60mW/cm2である。Duty Factorとは、全体時間の内で実際に超音波を発信している時間の比率であり、例えば200μsを発信し、800μsを停止している場合のDuty Factorは20%となる。これらのLIPUS刺激を20分/日、5〜6回/週、3〜10週間行うことで骨折の治療促進が出来ることを報告している。
Intensity Ultrasound, 以後LIUS<60mW/cm2)に変換して、大面積で出来るだけ均一に制御して低強度超音波を照射させるための超音波拡散材料から成る音響拡散層を備えた超音波照射装置である。特に、前記音響拡散層を、前記音響整合層内部、前記ケース内部、及び前記ケース外部の少なくとも一方に備えたものである。前記超音波振動子は、人又は哺乳動物に対して少なくとも2種類の周波数と2種類のPRFで連続的且つ、自動的にマルチ高強度超音波HIUS(数W/cm2)のビームを発生させものであると良い。
12 ケース
14 基板
16 電源
17 制御部
18 リード線
19 高強度超音波(HIUS)
20,41,42 超音波振動子
21 低強度超音波(LIUS)
22 音響整合層
24,32,48 音響拡散層
26 携帯型電子機器
28 支持台
44 スピーカ
50,60,62,76 超音波照射システム
52 水槽
56 超音波反射材
65 超音波発振部
66 浮き
67 固定部
68 接続線
72 内壁
74 駆動部
Claims (21)
- 超音波を発生可能な超音波振動子と、この超音波振動子を駆動する駆動部と、前記超音波振動子及び前記駆動部を保持したケースと、前記超音波振動子と前記ケースとの間に設けられた音響整合層と、前記超音波振動子から発せられる高強度超音波を拡散させるとともに単位面積当たりの強度が弱い低強度超音波に変換して大面積に照射させる超音波拡散材料から成る音響拡散層とを備え、
前記音響拡散層を、前記音響整合層内部、前記ケース内部、及び前記ケース外部の少なくとも一方に備えたことを特徴とする超音波照射装置。 - 前記超音波振動子は圧電振動子であり、前記音響拡散層の前記超音波拡散材料は、音響インピーダンスが40以上の金属材料であって、多数の孔を有する網により構成され、その目開きが、使用する超音波の水中波長λのλ〜λ/10である請求項1記載の超音波照射装置。
- 前記超音波振動子は圧電振動子であり、前記音響拡散層の前記超音波拡散材料は、気泡及び気体を90〜99体積%含む発泡樹脂により構成される請求項1記載の超音波照射装置。
- 前記超音波振動子は、鉛を用いない圧電材料を使用した請求項2,または3記載の超音波照射装置。
- 前記圧電振動子とその電源のリード線取り出し位置が、前記ケース内の前記超音波振動子とは離れた位置であって、使用状態で上部に位置する請求項4記載の超音波照射装置。
- 前記ケースには、2種類の周波数と2種類のパルス繰り返し周波数の少なくともいずれかを有する前記超音波振動子が配置され、これらが前記駆動部により、連続的且つ自動的に複数の超音波を発生する請求項1記載の超音波照射装置。
- 前記超音波振動子の電源を含む前記駆動部と、前記超音波振動子及び前記音響拡散層を含む超音波発振部が分割されており、分割された前記超音波発振部は防水機能を有して電気的に前記駆動部と接続可能に設けられ、
前記超音波発振部を水面に浮揚可能な保持体に担持させ、分割された前記超音波発振部を前記駆動部に接続することで、水面下で前記超音波発振部を浮遊及び揺動可能に設けられた請求項1記載の照射装置。 - 少なくとも2種類の材料の前記音響整合層を具備し、その厚みは使用する超音波の水中波長λの1/4の倍数であり、外形形状が前記超音波振動子よりも投影面積で、前記超音波振動子の120〜200%である請求項1記載の超音波照射装置。
- 前記音響整合層の一部は、前記ケースを構成する透明な有機材料であり、その厚みは前記λの1/4の倍数である請求項1記載の超音波照射装置。
- 前記各超音波振動子の基本波周波数は、0.3MHzから5MHzの範囲であり、前記各超音波振動子の圧電振動子に前記音響整合層を複数貼り付け、その際に複数の共振周波数の前記超音波を発生させ、少なくとも2種類の異なる周波数の前記超音波を、1枚の前記圧電振動子で連続的且つ自動的に発生させる請求項1記載の超音波照射装置。
- 前記各超音波振動子は、角錐、円錐、または球状の前記ケースの側面に、少なくとも2個設置され、それぞれの超音波放射面が、60〜200度の角度範囲で交わる請求項1記載の超音波照射装置。
- 前記超音波はパルス波であり、前記パルス波の繰り返し周波数(PRF)は、1000Hz〜0.5Hz、Duty Factorは10〜60%であり、前記PRFは、1〜3msと20〜40ms、及び500〜2000msの中から選択した少なくとも2つを連続的且つ自動的に発生させる請求項1記載の超音波照射装置。
- 着脱可能な携帯型電子機器、または他に可聴音の音楽を発生させる装置を有する請求項1記載の超音波照射装置。
- 前記請求項1乃至13のいずれかに記載の超音波照射装置を備え、人又は哺乳動物を収容可能で水を入れた水槽と、前記水槽の水面または水中の少なくともいずれかに、前記超音波照射装置が設けられ、前記水槽中の水中に前記超音波照射装置から超音波を照射可能に設けられたことを特徴とする超音波照射システム。
- 前記水槽の内壁表面は、表面積の少なくも80%以上に、超音波を反射及び拡散させるための超音波反射率が80%以上の超音波反射材が取り付けられている請求項14記載の超音波照射システム
- 前記超音波反射材は複合材料であり、その水槽内面または外面材料の密度は、0.01〜0.1g/cm3で、気体を含む有機材料である発泡材料で構成されている請求項15記載の超音波照射システム。
- 前記超音波反射材はシートからなり、その表面には耐水性のシートを設け、内部には90〜99体積%の気体を含む発泡有機材料を備えた請求項16記載の超音波照射システム。
- 直径が0.01〜10mmの空気のバブルを水中に放出するバブル発生装置を備える請求項14乃至17のいずれか記載の超音波照射システム。
- 前記請求項1乃至13に記載の少なくとも一つの超音波照射装置、又は前記超音波振動子を有する部分を水槽に入れ、前記超音波振動子を水に浮かせて揺動させ、前記超音波振動子から異なる周波数とPRFを持つマルチ超音波を連続的且つ自動的に発生させて、前記水槽の内壁及び水面で前記超音波を反射させ、水中の人又は哺乳動物の全身又は一部に低強度の前記マルチ超音波による刺激を施すことを特徴とする超音波照射方法。
- 前記浴槽中の人又は哺乳動物に対して、超音波照射部分の体重当たりで25〜1000mW/kgの時間平均超音波強度(Isata)を照射する請求項19記載の超音波照射方法。
- 前記水槽中の水の温度を、37〜42℃に設定し、前記超音波振動子から異なる周波数とPRFのそれぞれの超音波を、連続的且つ自動的に一定時間内でシリーズに照射し、これを10〜60分/日、2〜7日/週、且つ2〜50週間、前記超音波を水槽中の頭部を除く前記人又は哺乳動物の全身又は一部に照射する請求項19記載の超音波照射方法。
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- 2017-05-08 CN CN201780002897.3A patent/CN107921281B/zh not_active Expired - Fee Related
- 2017-05-08 JP JP2018518224A patent/JP6931877B2/ja active Active
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Also Published As
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US20190151192A1 (en) | 2019-05-23 |
KR102470451B1 (ko) | 2022-11-23 |
CN107921281B (zh) | 2020-07-21 |
KR20190009734A (ko) | 2019-01-29 |
CN107921281A (zh) | 2018-04-17 |
TW201742649A (zh) | 2017-12-16 |
WO2017199779A1 (ja) | 2017-11-23 |
JP6931877B2 (ja) | 2021-09-08 |
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