Diagnostic support apparatus

A technology supporting equipment and pulse, applied in the system field of detecting abnormal increase or decrease of blood volume, can solve problems such as the difficulty of trying to compare the evolution of delay time

Active Publication Date: 2012-12-26
EMPIRICAL TECH CORP
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Problems solved by technology

As a result, other than step-by-step measurements, attempts to compare the evolution of delay times at certain points on the pulse measured at different arterial pulse locations have been very difficult

Method used

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[0049] definition

[0050] Where terms are defined differently than their commonly used meanings, applicants intend to use the definitions given below unless otherwise indicated.

[0051] For the purposes of the present invention, the term "plethysmograph" refers to a device that measures changes in the dimensions of an organ or body part based on the amount of blood flowing through or present in the organ or body part.

[0052] For the purposes of the present invention, the term "horse racing" refers to a speed competition between a carriage ridden or drawn by a jockey and the driver's horse.

[0053] For the purposes of the present invention, the term "sufficient" refers to a sufficient or appreciable amount, total amount or size. Accordingly, the term "substantially comparable" as used herein refers to data or information that enables a diagnosis to be made based on a comparison of real-time patient data with sufficiently comparable data.

[0054] For the purposes of the ...

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Abstract

The diagnostic support apparatus detects a pulse waveform from an animate being, and measures the time difference between the arrival of a first pulse and the arrival of a second pulse. The first pulse, is the primary left ventricular ejection pulse, and corresponds to the first peak and the second pulse, is the iliac reflection pulse and corresponds to the third peak. Data storage can be provided for storing measured time differences between the first and the second pulses for a period of at least about fifteen real time seconds to produce statistically significant arterial pulse parameter data represented by the time difference. Data relating to blood volume and / or blood volume changes are monitored to show trend changes relative to a baseline value.

Description

[0001] Cross reference to related applications [0002] none. technical field [0003] The present invention relates generally to systems for detecting abnormal increases or decreases in blood volume, and more particularly to detecting decreases in plasma volume. Background technique [0004] Many attempts have been made to derive arterial blood pressure from time-correlated analysis of arterial pulses, as opposed to amplitude-correlated analysis using cuffs and sphygmomanometers and the like. The main advantages of time-based blood pressure monitoring systems over those based on amplitude analysis are that they are comfortable to wear and inherently calibrated. [0005] Amplitude-dependent devices must couple to pressure waves within the artery, and they must closely track the coupled pressure they exert on the artery. Required partial occlusion of the artery often results in marked skin imprinting and arm numbness when the radial artery, which is the most commonly used s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/02
CPCA61B5/02042A61B5/02125A61B5/0295A61B5/0261A61B5/0285A61B5/0535A61B2505/05
Inventor M·巴鲁克D·格雷特C·阿德金斯
Owner EMPIRICAL TECH CORP
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