JP6718177B2 - 非観血的動静脈圧測定装置及びその測定装置を用いた動静脈圧測定方法 - Google Patents
非観血的動静脈圧測定装置及びその測定装置を用いた動静脈圧測定方法 Download PDFInfo
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- A61B5/021—Measuring pressure in heart or blood vessels
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- A61B5/021—Measuring pressure in heart or blood vessels
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Description
このように、本発明によれば、超音波プローブを用い、非侵襲的で且つ正確に、静脈圧に限らずに動脈圧も測定可能である。また、現在一般的に用いられている血圧計は、上腕にカフを巻き付け、そのカフの圧力を上昇させたのちにカフの圧力を徐々に減圧しながら計測するために測定に時間を要するのに対し、本発明の測定装置は加圧式であり、加圧しつつ動脈や静脈の画像変化を観察することにより大よその動脈圧および静脈圧を直ぐに予測できる。そこで、本発明の測定装置によれば加圧時間を短縮できる。すなわち、現在一般的に用いられている血圧計のように、知りたい測定値以上の加圧に時間を取られることがないため、本発明の測定装置によれば、現在一般的に用いられている血圧計の2分の1から6分の1まで測定時間を短縮することができる。
変形例1の非観血的動静脈圧測定装置(100a)は、バルーン(31)を加圧する手段が追加されたことと圧力センサ(33)の配置において、第1実施形態の非観血的動静脈圧測定装置(100)と異なる。変形例1の非観血的動静脈圧測定装置(100a)では、バルーン(31)の加圧手段を追加することにより、静脈圧の測定だけでなく、動脈圧の測定が可能となる。以下、これらの異なる点について説明する。
変形例2の非観血的動静脈圧測定装置(100b)は、押圧部(10b)のバルーン(31b)を加圧する手段が、第1実施形態の場合と異なる。以下、異なる点を重点的に説明する。本変形例2においても、変形例1と同じように、バルーン(31b)加圧する手段を備えているので、静脈圧の測定だけでなく、動脈圧の測定が可能である。
第1実施形態の非観血的動静脈圧測定装置(100)によれば、非侵襲的に簡便に短時間で動脈圧と静脈圧の測定が可能なことである。この非観血的動静脈圧測定装置(100)では、非特許文献1の測定器と違い、皮膚に接触するエコーウインドウ(15)を楕円形状とし、そのエコーウインドウ(15)の長軸方向と、体の測定する部分の長軸方向との向きを合わせることにより、バルーン(31)が宙に浮くことなく皮膚(61)に密着し、体表面近くの動脈圧と静脈圧を正確に測定することができる。
第1実施形態の非観血的動静脈圧測定装置(100)では、バルーン(31)の圧迫による圧力測定部の加圧法以外に、バルーン(31)に接続されたチューブ(17)を通じて加圧水をバルーン(31)内へ供給してもよい。
20 プローブ
31 バルーン(可撓性容器)
32 押圧ボタン
33 圧力センサ(検出部)
36 水(液体)
40 処理部
50 表示部
61 皮膚
62 血管
100 非観血的動静脈圧測定装置
Claims (10)
- 超音波を皮膚内の血管へ向けて照射するプローブ(20)と、
前記皮膚及び前記プローブ(20)の間に挟まれて、前記皮膚を押圧する押圧部(10)と、
前記押圧部(10)における前記皮膚への押圧力を検出する検出部(33)とを備え、
前記押圧部(10)は、前記超音波を透過させる液体(36)と、前記液体(36)を収容し且つ前記超音波を透過させる可撓性の材料で形成された可撓性容器(31)とを有し、前記可撓性容器(31)の外面のうち前記超音波を透過させた部分の外面で前記皮膚を押圧することを特徴とする非観血的動静脈圧測定装置。 - 前記検出部(33)は、前記可撓性容器(31)内の液体(36)の圧力を前記押圧力として検出することを特徴とする、請求項1に記載の非観血的動静脈圧測定装置。
- 前記押圧部(10)は、前記プローブ(20)を前記可撓性容器(31)に対して進退させる進退機構(85)を備えていることを特徴とする、請求項1又は2に記載の非観血的動静脈圧測定装置。
- 前記押圧部(10)は、前記可撓性容器(31)における前記皮膚との接触部分以外の外面を押圧する押圧ボタン(32)を備えていることを特徴とする、請求項1から3の何れか1つに記載の非観血的動静脈圧測定装置。
- 前記押圧部(10)は、前記可撓性容器(31)の内部に前記液体(36)とともに収容された拡縮自在の袋状体(70)と、前記袋状体(70)に対して流体を流出入させる流体通路(71)とを備えていることを特徴する、請求項1から4の何れか1つに記載の非観血的動静脈圧測定装置。
- 前記流体通路(71)は、前記流体の背圧を調整する背圧調整部(73)を備え、前記背圧調整部(73)により前記袋状体(70)の内部圧力が調整されることを特徴とする、請求項5に記載の非観血的動静脈圧測定装置。
- 前記流体通路(71)には、前記袋状体(70)から流体を流出させるための流出口(74)が形成されていることを特徴とする、請求項5又は6に記載の非観血的動静脈圧測定装置。
- 前記可撓性容器(31)を収容したケーシング(11)を備え、
前記ケーシング(11)は、前記皮膚に接触させる接触面(25)を有し、前記接触面(25)には、前記可撓性容器(31)と前記液体(36)とを透過した前記超音波を通過させる超音波通過口(15)が形成され、
前記可撓性容器(31)の外面は、前記超音波通過口(15)を通じて前記皮膚を押圧する一方、
前記超音波通過口(15)の外縁部は、楕円形状、矩形状、又は矩形の四隅が丸みを帯びた形状であることを特徴とする、請求項1から7の何れか1つに記載の非観血的動静脈圧測定装置。 - 前記可撓性容器(31)は、筒状に形成され、
前記可撓性容器(31)の軸方向の端部には、前記ケーシング(11)の内面の前記超音波通過口(15)の外縁部に密接させる鍔部(42)が形成されていることを特徴とする、請求項8に記載の非観血的動静脈圧測定装置。 - 超音波を皮膚内の血管へ向けて照射するプローブ(20)と、
前記皮膚及び前記プローブ(20)の間に挟まれて、前記皮膚を押圧する押圧部(10)と、
前記押圧部(10)における前記皮膚への押圧力を検出する検出部(33)と、
画像処理装置とを備え、
前記押圧部(10)は、前記超音波を透過させる液体(36)と、前記液体(36)を収容し且つ前記超音波を透過させる可撓性の材料で形成された可撓性容器(31)とを有し、
前記可撓性容器(31)の外面のうち前記超音波を透過させた部分の外面で前記皮膚を押圧し、
前記超音波を皮膚内の血管へ向けて照射して反射された超音波から得たエコー信号を前記画像処理装置で走査処理してBモード画像を得、
前記Bモード画像の複数のフレームを前記画像処理装置で演算処理することによってエコー強度の特定周波数成分の強弱を抽出して拍動の周期を得、
前記検出部(33)で検出された圧力値と、前記拍動の周期とに基づいて、動脈の拡張期と収縮期の血圧を測定することを特徴とする非観血的動静脈圧測定装置を用いた動静脈圧測定方法。
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Application Number | Priority Date | Filing Date | Title |
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JP2015176249 | 2015-09-08 | ||
JP2015176249 | 2015-09-08 | ||
JP2015245177 | 2015-12-16 | ||
JP2015245177 | 2015-12-16 | ||
PCT/JP2016/076323 WO2017043536A1 (ja) | 2015-09-08 | 2016-09-07 | 非観血的動静脈圧測定装置及びその測定装置を用いた動静脈圧測定方法 |
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US10702281B2 (en) | 2016-07-18 | 2020-07-07 | Merit Medical Systems, Inc. | Inflatable radial artery compression device |
US20200383590A1 (en) * | 2016-11-17 | 2020-12-10 | Medici Technologies Llc | Methods and Apparatuses for Central Venous Pressure Measurement Status |
WO2019090104A2 (en) | 2017-11-03 | 2019-05-09 | Merit Medical Systems, Inc. | Hemostasis devices and methods of use |
DE102017221330A1 (de) * | 2017-11-28 | 2019-05-29 | Ulrich A. Baumann | Druckmessvorrichtung zur Druckmessung und/oder Elastizitätsmessung einer Vene oder eines Organs und zur Kombination mit einer Ultraschallmesseinheit sowie System und Verfahren zur Druckmessung und/oder Elastizitätsmessung einer Vene oder eines Organs |
WO2019173492A1 (en) * | 2018-03-09 | 2019-09-12 | Merit Medical Systems, Inc. | Ultrasound compatible inflatable vascular compression and related systems and methods |
CN108652665A (zh) * | 2018-03-21 | 2018-10-16 | 业成科技(成都)有限公司 | 感测装置 |
EP3773257A4 (en) | 2018-04-11 | 2021-12-22 | Merit Medical Systems, Inc. | INFLATABLE COMPRESSION DEVICE |
USD911516S1 (en) | 2018-06-19 | 2021-02-23 | Merit Medical Systems, Inc. | Hemostasis device |
WO2021076833A1 (en) | 2019-10-17 | 2021-04-22 | Verathon Inc. | Systems and methods for ultrasound scanning |
US11666313B1 (en) * | 2020-12-04 | 2023-06-06 | Fonar Corporation | Calibration technique, apparatus and system for pulsed phase-lock loop ultrasound intracranial pressure measurement systems |
WO2023162825A1 (ja) * | 2022-02-22 | 2023-08-31 | 学校法人 久留米大学 | 動静脈圧測定装置及び動静脈圧測定方法 |
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AU3068984A (en) | 1983-07-01 | 1985-02-07 | Skrabal, F. | Blutdruckmessgerat |
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JP4799833B2 (ja) * | 2003-06-19 | 2011-10-26 | サラヤ株式会社 | エコーを用いた血管径測定方法およびその装置 |
JP2005034543A (ja) * | 2003-07-18 | 2005-02-10 | Matsushita Electric Ind Co Ltd | 血流状態モニタ装置 |
US20070270720A1 (en) * | 2006-05-04 | 2007-11-22 | Fry William R | Noninvasive physiologic pressure measurement |
JP2010082337A (ja) * | 2008-10-01 | 2010-04-15 | Hitachi Medical Corp | 超音波診断装置 |
DE102008061018B3 (de) | 2008-12-08 | 2010-07-08 | Charité - Universitätsmedizin Berlin | Messgerät und Verfahren zur nicht-invasiven Langzeitmessung des Blutdruckes |
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WO2011030415A1 (ja) * | 2009-09-09 | 2011-03-17 | 株式会社ユネクス | 血管機能検査装置 |
JP6024120B2 (ja) * | 2012-02-24 | 2016-11-09 | セイコーエプソン株式会社 | 超音波プローブ、プローブヘッド、電子機器及び診断装置 |
JP6069848B2 (ja) * | 2012-02-24 | 2017-02-01 | セイコーエプソン株式会社 | プローブヘッド、超音波プローブ、電子機器及び診断装置 |
JP2013188382A (ja) | 2012-03-14 | 2013-09-26 | Asahi Kasei Medical Co Ltd | 中心静脈圧の測定方法、中心静脈圧の測定システム、透析システム及びプログラム |
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JP2015159934A (ja) * | 2014-02-27 | 2015-09-07 | セイコーエプソン株式会社 | 超音波計測装置及び超音波計測方法 |
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