JP2021526891A - 移植された血管補助システムの領域内の流体中の音速を決定するための方法およびシステム、ならびにそれを用いた血管補助システム - Google Patents
移植された血管補助システムの領域内の流体中の音速を決定するための方法およびシステム、ならびにそれを用いた血管補助システム Download PDFInfo
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- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/538—Regulation using real-time blood pump operational parameter data, e.g. motor current
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- A—HUMAN NECESSITIES
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- 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
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Abstract
【選択図】図1
Description
a)超音波センサによって超音波信号を伝送する工程と、
b)超音波センサの視野に、少なくとも超音波センサまたはさらなる音響反射体に対して定義された距離で配置される、少なくとも一つの音響反射体に超音波信号を反射させる工程と、
c)反射超音波信号を受信する工程と、
d)反射超音波信号を使用して、流体内の音速を決定する工程と、を含む。
補助システム内またはその上に配置された超音波センサと、
超音波センサの視野内に、少なくとも超音波センサまたはさらなる音響反射体に対して定義された距離で配置される、少なくとも一つの音響反射体と、を備える。
・超音波システムの放射範囲で少なくとも一つの超音波反射体を補足することによって、音速は、結果として生じるパルス飛行時間および/または反射体からのランプ飛行時間から決定することができる。
・既知の音速は、流量測定の測定精度を増加させる。
・音速は、血液の組成に依存し、この場合、直接決定して使用することができる。
・FMCWアプローチは、測定に非常に正確な時間差を必要としない。同等の周波数差を代わりに決定することができ、これにより技術的労力が大幅に減少する。
Claims (13)
- 移植された血管補助システム(2)の領域内の流体(1)中の音速を決定する方法であって、
a)超音波センサ(4)によって超音波信号(3)を送信する工程と、
b)前記超音波センサ(4)の視野(6)に、少なくとも前記超音波センサ(4)に対して、またはさらなる音響反射体(5)に対して定義された距離で配置される、少なくとも一つの音響反射体(5)に前記超音波信号(3)を反射させる工程と、
c)前記反射超音波信号(8)を受信する工程と、
d)前記反射超音波信号(8)を使用して、前記流体内の前記音速を決定する工程とを含む、方法。 - 前記超音波信号(3)が、前記超音波センサ(4)から異なる距離(7)に配置される少なくとも二つの音響反射体(5)に反射される、請求項1に記載の方法。
- 前記少なくとも一つの音響反射体(5)が、前記流体(1)の最大音響インピーダンスよりも大きいか、または前記流体(1)の最小音響インピーダンスより小さい音響インピーダンスを有する、請求項1または2に記載の方法。
- 前記少なくとも一つの音響反射体(5)が、埋め込み材料(9)に埋め込まれる、請求項1〜3のいずれか一項に記載の方法。
- 前記音速が、パルス飛行時間ベースの分析アルゴリズムを使用して決定される、請求項1〜4のいずれか一項に記載の方法。
- 前記音速が、FMCWベースの分析アルゴリズムを使用して決定される、請求項1〜5のいずれか一項に記載の方法。
- ビート周波数が決定される、請求項6に記載の方法。
- 移植された血管補助システム(2)の領域内の流体(1)中の音速を決定するシステムであって、
前記補助システム(2)内またはその上に配置される超音波センサ(4)と、
前記超音波センサ(4)の視野(6)に、少なくとも前記超音波センサ(4)に対して、またはさらなる音響反射体(5)に対して定義された距離で配置される、少なくとも一つの音響反射体(5)とを備える、システム。 - 少なくとも二つの音響反射体(5)が、前記超音波センサ(4)から異なる距離(7)に配置される、請求項8に記載のシステム。
- 前記少なくとも一つの音響反射体(5)が、埋め込み材料(9)に埋め込まれる、請求項8または9に記載のシステム。
- パルス飛行時間ベースの分析アルゴリズムがその中に記憶される分析ユニットが提供される、請求項8〜10のいずれか一項に記載のシステム。
- FMCWベースの分析アルゴリズムがその中に記憶される分析ユニットが提供される、請求項8〜11のいずれか一項に記載のシステム。
- 請求項8〜12のいずれか一項に記載の音速を決定するシステムを備える、移植可能な血管補助システム(2)。
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DE102018208899.3A DE102018208899A1 (de) | 2018-06-06 | 2018-06-06 | Verfahren zum Ermitteln der Schallgeschwindigkeit in einem Fluid im Bereich eines implantierten, vaskulären Unterstützungssystems |
DE102018208899.3 | 2018-06-06 | ||
PCT/EP2019/064803 WO2019234163A1 (de) | 2018-06-06 | 2019-06-06 | Verfahren und system zum ermitteln der schallgeschwindigkeit in einem fluid im bereich eines implantierten, vaskulären unterstützungssystems |
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LU100993B1 (de) * | 2018-11-09 | 2020-05-11 | Visseiro Gmbh | Sensoroberfläche |
WO2022109591A2 (en) | 2020-11-20 | 2022-05-27 | Kardion Gmbh | Mechanical circulatory support system with insertion tool |
US20230173250A1 (en) | 2021-12-03 | 2023-06-08 | Kardion Gmbh | Cardiac pump with optical fiber for laser doppler |
US20240011808A1 (en) | 2022-07-11 | 2024-01-11 | Kardion Gmbh | Laser doppler velocimetry flow measurement |
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