Method of controlling inflation of a cuff in blood pressure determination

A blood pressure and cuff technology, applied in the direction of cardiac catheterization, etc., can solve the problems of prolongation, wasting time, and patient discomfort.

Inactive Publication Date: 2008-10-01
GENERAL ELECTRIC CO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These steps are time consuming and make patients uncomfortable
[0005] Therefore, if the initial inflation pressure is chosen to be much higher than the patient's systolic blood pressure, the NIBP system over-inflates the blood pressure cuff, causing patient discomfort and prolonged measurement time

Method used

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  • Method of controlling inflation of a cuff in blood pressure determination
  • Method of controlling inflation of a cuff in blood pressure determination
  • Method of controlling inflation of a cuff in blood pressure determination

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Embodiment Construction

[0021] In the following detailed description, with reference to the accompanying drawings, which constitute a part of this specification, descriptions of specific embodiments that may be practiced are shown. These embodiments of the invention have been described in sufficient detail to enable those skilled in the art to practice the embodiment, it is to be understood that other embodiments may be utilized and logical, mechanical, electrical, and other changes may be made without departing from the spirit of the invention scope. Therefore, the following detailed description should not be considered as limiting the scope of the invention.

[0022] In various embodiments, a method of estimating a patient's blood pressure to control cuff inflation and deflation, thereby enhancing the performance of a NIBP system, is disclosed. Systolic blood pressure was estimated from the minimal number of oscillations obtained when the cuff was inflated. These oscillations appear early in the ...

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PUM

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Abstract

The present application discloses a method of calculating an initial inflation pressure during a blood pressure determination using an NIB system. The cuff provided with the system is inflated towards a default initial inflation pressure and a plurality of oscillometric pulses are obtained during inflation. A quick systolic pressure is estimated from a pre-defined function having a physiologically- expected shape of an oscillometric envelope fitted to oscillometric data obtained during the inflation. In an embodiment, the parameters within the function are specifically found by fitting a plurality of oscillometric pulse amplitudes along with their corresponding cuff pressures obtained during inflation to the pre-defined function. The cuff is inflated up to a calculated initial inflation pressure, which is found from the estimated quick systolic pressure. After the cuff is brought to the initial inflation pressure, deflation is begun for determining the actual systolic and diastolic pressures for output to a user.

Description

technical field [0001] The present invention generally relates to methods of controlling cuff inflation and deflation to enhance the performance of NIBP systems. More particularly, the present invention relates to a method of estimating the initial inflation pressure when a cuff is inflated. Background technique [0002] The oscillometric method of measuring blood pressure involves placing an inflatable cuff around an extremity of the patient's body, such as the patient's upper arm. When using conventional NIBP monitoring systems, the cuff is inflated to an initial inflation pressure, which is slightly above the patient's systolic blood pressure. The cuff is then gradually deflated, and a pressure sensor detects cuff pressure along with pressure fluctuations or oscillations due to beat-to-beat pressure changes in the arteries beneath the cuff. The data from the pressure sensor is used to calculate the patient's systolic blood pressure, mean arterial pressure (MAP) and dias...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0225
CPCA61B5/02255A61B5/02225
Inventor L·T·赫尔什S·科卢里B·弗里德曼R·梅德罗
Owner GENERAL ELECTRIC CO
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