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HANDHELD HEART RATE DETECTOR

IP.com Disclosure Number: IPCOM000198113D
Publication Date: 2010-Jul-26
Document File: 3 page(s) / 21K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention provides a handheld Heart Rate (HR) detector which determines the heart rate of a fetus or a mother as a stand-alone system. The handheld HR detector has a front end acquisition module, an analog to digital converter and a display. The analog signal comprising the PQRS wave from the front end acquisition module of the HR detector is fed to an analog to digital converter (ADC) that converts the analog incoming signal into digital signal. The digital signals are processed by a Field programmable gate array (FPGA) to provide the heart rate.

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This is the abbreviated version, containing approximately 54% of the total text.

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HANDHELD HEART RATE DETECTOR

FIELD OF INVENTION

The invention generally relates to heart rate detectors and more particularly to a stand- alone handheld fetal and maternal heart rate detector.

BACKGROUND OF THE INVENTION

Fetal and maternal heart monitoring is widely used to indicate the overall health status of a fetus or a mother during pregnancy. Fetal and maternal heart monitoring is especially important in certain stages of pregnancy, for example during stress conditions like labor.

Generally, fetal and/or maternal heart is monitored by Electrocardiography (ECG). Maternal and fetal ECG is one of the vital signs that are monitored to indicate the overall health condition of the mother and fetus respectively. An ECG is obtained by detecting and amplifying the tiny electrical changes on the skin that are caused when the heart muscle depolarizes during each heart beat. A typical ECG comprises a P wave (representing atrial depolarization), a QRS complex (representing ventricular depolarization) and a T wave (representing ventricular repolarization).

However, interpreting the signals from the conventional ECG systems remains a challenge. Multiple factors and considerations affect the ECG, thereby resulting in very challenging situations, where conventional ECG systems fail to provide satisfactory results.

Hence there exists a need for a technique that allows ECG signals to be interpreted simply to monitor fetal and maternal heart.

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BRIEF DESCRIPTION OF THE INVENTION

The invention provides a stand-alone handheld Heart Rate (HR) detector which determines the heart rate of a fetus or a mother. The analog signal comprising the PQRS wave from the front end acquisition module of the HR detector is fed to an analog to digital converter (ADC) that converts the analog incoming signal into digital signal. The digital signals are processed by a Field programmable gate array (FPGA) to provide the heart rate. The handheld HR detector is user friendly, can be designed at a very low cost, consumes low power and can be operated using a battery.

DETAILED DESCRIPTION OF THE INVENTION

A stand-alone handheld Heart Rate (HR) detector which determines the heart rate of a fetus or a mother from ECG signals is disclosed. The HR detector includes a front end acquisition module, an analog to digital converter (ADC) and a display. The analog signal comprising the PQRS wave from the front end acquisition module is fed to an ADC that converts the incoming analog signal into a digital signal.

Signal from the f...