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Autoregulation system and method using tissue oximetry and blood pressure

一种自动调节、血压的技术，应用在应用、血管评估、医药科学等方向，能够解决不能假定恒定值等问题

Active Publication Date: 2020-11-06
EDWARDS LIFESCIENCES CORP
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  • Abstract
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  • Application Information

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Problems solved by technology

Therefore, the range of autoregulation of blood flow due to changes in blood pressure varies between subjects and cannot be assumed to be a constant value

Method used

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  • Autoregulation system and method using tissue oximetry and blood pressure
  • Autoregulation system and method using tissue oximetry and blood pressure
  • Autoregulation system and method using tissue oximetry and blood pressure

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Embodiment Construction

[0050] refer to Figure 4A and Figure 4B , shows a non-limiting embodiment of an automatically adjusting measurement and monitoring system ("AM system 20"). As will be described herein, AM system 20 may be configured to generate measurable and / or monitored data values ​​(e.g., coherence values), or data values ​​indicative of the status of the subject's self-regulating system function; for example, the subject's self-regulating system Working degree. While an exemplary AM system 20 is shown, Figure 4A and Figure 4B The exemplary components illustrated in are not intended to be limiting; for example, additional or alternative components and / or implementations may be used. In some embodiments (eg, Figure 4A ), the AM system 20 may include a blood pressure sensing device 22, a tissue oximeter 24, a controller 26, one or more output devices 28, and one or more input devices 30 integrated into a single system device; e.g. , the controller 26 is integrally connected with the ...

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Abstract

A method and apparatus for monitoring a subject's autoregulation function state is provided. The method includes: a) continuously sensing a tissue region of the subject with a tissue oximeter, the sensing producing first signals, and determining frequency domain tissue oxygen parameter values; b) continuously measuring a blood pressure level of the subject using a blood pressure sensing device, the measuring producing second signals, and determining frequency domain blood pressure values; c) determining a coherence value indicative of the subject's autoregulation state in each of a plurality of different frequency bands; and d) determining a peak coherence value indicative of the subject's autoregulation state based on the determined coherence value from each of the plurality of differentfrequency bands.

Description

[0001] related application [0002] This application claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application No. 62 / 607,946, filed December 20, 2017, the disclosure of which is incorporated herein by reference. technical field [0003] The present disclosure relates to medical devices and methods in general, and in particular to medical devices and methods for measuring and / or monitoring autoregulation. Background technique [0004] Autoregulation is a process in mammals whose purpose is to maintain sufficiently stable blood flow to an organ (eg, brain, heart, kidney, etc.) over a range of perfusion pressures. Although most systems in the body exhibit some degree of autoregulation, the brain is very sensitive to both hyperperfusion and hypoperfusion. Figure 1 shows the effect of a sudden decrease in perfusion pressure from 100 mmHg to 70 mmHg. In a passive vascular bed (ie, poor autoregulation), this sudden drop in pressure will result in a sustaine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/02A61B5/0205A61B5/1455G06F17/14G06F17/15
CPCA61B5/02028A61B5/021A61B5/14551A61B5/7257A61B5/742
Inventor P·B·本尼
Owner EDWARDS LIFESCIENCES CORP
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