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Heart failure diagnostic device

A technology for heart failure and diagnostic devices, which is applied in the fields of diagnosis, diagnostic recording/measurement, medical science, etc. It can solve problems such as the difficulty of measuring sympathetic nerve activity, and achieve the effect of suppressing discomfort and good sense of use

Active Publication Date: 2022-04-08
SUMITOMO RIKO CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the evaluation of the state of heart failure by the measurement of sympathetic nerve activity is also considered, but the measurement of sympathetic nerve activity is not easy

Method used

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Embodiment Construction

[0039] Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

[0040] First, in figure 1 A heart failure diagnosis device 10 as an embodiment of the present invention is shown in . This heart failure diagnostic device 10 is configured to include a piezoelectric sensor sheet 12 that receives minute body motions (vibrations) of the body accompanying the respiration and cardiac rhythm of the patient P who is the user as the subject of examination, A detection signal corresponding to the input vibration is output; and an analysis device 14 analyzes the detection signal output from the piezoelectric sensor sheet 12 .

[0041] In more detail, the piezoelectric type sensor sheet 12 has, for example, figure 2 The shown structure is provided with a flexible sensor main body 16 in the shape of a substantially rectangular sheet. Such as image 3 , Figure 4 As shown,...

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Abstract

Provided is a novel heart failure diagnostic device capable of performing high-precision diagnosis of heart failure based on respiratory stability on the basis of the detection results of a flexible piezoelectric sensor sheet that does not need to be worn on a user. A heart failure diagnostic device (10) diagnoses heart failure using an index generated on the basis of the standard deviation of the respiratory rate of a user (P), the heart failure diagnostic device (10) comprising: a flexible piezoelectric sensor sheet (12) that outputs a detection signal in accordance with input vibration; a respiration signal acquisition unit (40) that extracts, as a respiration signal, a signal of a vibration frequency caused by respiration from a detection signal of the piezoelectric sensor sheet (12); and a power spectrum calculation unit (44) that calculates the power spectrum of the respiratory band on the basis of the respiratory signal, the heart failure diagnosis device (10) being provided with a signal correction unit (12). And a signal correction unit (12) that corrects the detection signal so that the maximum value of the primary frequency component of the respiratory waveform in the power spectrum is 1.5 times or more of the maximum value of the secondary frequency component of the respiratory waveform, thereby forming the respiratory signal.

Description

technical field [0001] The present invention relates to a heart failure diagnosis device for diagnosing heart failure using an index obtained based on a detection signal of respiration. Background technique [0002] In patients with heart failure, the deterioration of the condition may lead to serious consequences such as death, so it is important to grasp the condition and detect it early. Therefore, for patients with heart failure, prediction of prognosis of heart failure, early detection of progression of heart failure, evaluation of severity of heart failure, and the like need to be appropriately performed. [0003] However, evaluation of the state of heart failure by measurement of sympathetic nerve activity is also considered, but the measurement of sympathetic nerve activity is not easy. On the other hand, for example, Japanese Patent No. 5679971 (Patent Document 1) proposes a method for easily grasping the condition of heart failure based on a detection signal of re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/113A61B5/11A61B5/08A61B5/00
CPCA61B5/113A61B5/0816A61B5/6892A61B5/7257A61B5/1102
Inventor 高桥涉山本征范清水厚辉近藤光由田口纯麻野井英次泽芳树宫川繁
Owner SUMITOMO RIKO CO LTD
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