Autonomic nervous activity monitor, blood processing apparatus, blood collecting apparatus and autonomic nervous activity monitoring method

a technology of autonomic nervous activity and monitor, which is applied in the direction of diagnostic recording/measuring, applications, catheters, etc., can solve the problems of donor or patient slipping into serious conditions, dizziness, fainting, and sometimes falling into serious conditions, so as to reduce the rate of blood collection
US20080281247A1Inactive Publication Date: 2008-11-13JAPANESE RED CROSS SOC +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
JAPANESE RED CROSS SOC
Publication Date
2008-11-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

An autonomic nervous activity monitor capable of predicting occurrence of abnormal reaction depending on autonomic nervous activity and used for medical practice and the like is provided. A blood component collecting apparatus 100 carries out frequency analysis to a pattern of heartbeat which is acquired by an ECG 300 from a donor, and calculates a high frequency component value [msec2] defined as an indicator for parasympathetic activity and a ratio value of a low frequency component to the high frequency component defined as an indicator for sympathetic activity to detect a change in these values on a time-series base. When a judgment circuit 204 predicts that abnormal reaction may occur to a donor after blood collection operation is started, a controller 200 controls a pump 9 to decrease a blood drawing or blood returning speed, or, to stop blood drawing or blood returning operation.
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Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] Applicants claim priority under 35 U.S.C. § 120 to U.S. application Ser. No. 11 / 083,213, filed Mar. 18, 2005, which is currently pending.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to an autonomic nervous activity monitor, a blood processing apparatus, a blood collecting apparatus and an autonomic nervous activity monitoring method.

[0004] 2. Description of Related Art

[0005] Vasovagal reactions (VVR), delayed dizziness or faintness often occur(s) to a donor or patient during or after blood collection as adverse reaction (abnormal reaction).

[0006] The VVR may cause the donor or patient bad feeling, dizziness, faintness or shock disease during blood collection, and the donor or patient occasionally falls into serious conditions. Because such phenomena harm the donor or patient mentally due to implantation of a fear to blood collection, it is likely to have a trouble thereafter in blood collection...

Claims

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