ES2155384A1 - ELECTRONIC SYSTEM FOR THE MEASUREMENT OF THE ELECTRICAL IMPEDANCE OF THE TORAX. - Google Patents

ELECTRONIC SYSTEM FOR THE MEASUREMENT OF THE ELECTRICAL IMPEDANCE OF THE TORAX.

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Publication number
ES2155384A1
ES2155384A1 ES009900983A ES9900983A ES2155384A1 ES 2155384 A1 ES2155384 A1 ES 2155384A1 ES 009900983 A ES009900983 A ES 009900983A ES 9900983 A ES9900983 A ES 9900983A ES 2155384 A1 ES2155384 A1 ES 2155384A1
Authority
ES
Spain
Prior art keywords
impedance
measurement
electrical
electrical impedance
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
ES009900983A
Other languages
Spanish (es)
Other versions
ES2155384B1 (en
Inventor
Vazquez Luciano Boquete
Lledo J Alberto Garcia
Navarro Rafael Barea
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad de Alcala de Henares UAH
Original Assignee
Universidad de Alcala de Henares UAH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidad de Alcala de Henares UAH filed Critical Universidad de Alcala de Henares UAH
Priority to ES9900983A priority Critical patent/ES2155384B1/en
Publication of ES2155384A1 publication Critical patent/ES2155384A1/en
Application granted granted Critical
Publication of ES2155384B1 publication Critical patent/ES2155384B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

Sistema electrónico para la medida de la impedancia eléctrica del tórax. El sistema objeto de invención mide la impedancia eléctrica del tórax, de modo que puede estimarse la pérdida de señal eléctrica del electrocardiograma convencional. Consta de los electrodos a situar en el cuerpo del paciente (1); circuito electrónico para simular una impedancia controlada por tensión (2); amplificador de instrumentación de ganancia variable y elevada impedancia de entrada (3); sistema de ajuste de la impedancia, detección de señal QRS y medida de picos (4); sistema de promediado del número deseado de medidas(5); display para la visualización de la medida (6) y un panel de control (7) que permite seleccionar las condiciones de medida. Esta invención se basa en considerar el corazón como un generador de señal y simular con (2) una impedancia equivalente a la de los tejidos interpuestos entre éste y el electrodo explorador, reconocible porque se reduce a la mitad la amplitud de la señal del ECG.Electronic system for measuring the electrical impedance of the thorax. The system object of the invention measures the electrical impedance of the thorax, so that the loss of electrical signal from the conventional electrocardiogram can be estimated. It consists of the electrodes to be placed on the patient's body (1); electronic circuit to simulate a voltage controlled impedance (2); instrumentation amplifier with variable gain and high input impedance (3); impedance adjustment system, QRS signal detection and peak measurement (4); system for averaging the desired number of measurements(5); display for viewing the measurement (6) and a control panel (7) that allows selecting the measurement conditions. This invention is based on considering the heart as a signal generator and simulating with (2) an impedance equivalent to that of the tissues interposed between it and the exploring electrode, recognizable because the amplitude of the ECG signal is reduced by half.

ES9900983A 1999-05-12 1999-05-12 ELECTRONIC SYSTEM FOR THE MEASUREMENT OF THE ELECTRICAL IMPEDANCE OF THE TORAX. Expired - Fee Related ES2155384B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9900983A ES2155384B1 (en) 1999-05-12 1999-05-12 ELECTRONIC SYSTEM FOR THE MEASUREMENT OF THE ELECTRICAL IMPEDANCE OF THE TORAX.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9900983A ES2155384B1 (en) 1999-05-12 1999-05-12 ELECTRONIC SYSTEM FOR THE MEASUREMENT OF THE ELECTRICAL IMPEDANCE OF THE TORAX.

Publications (2)

Publication Number Publication Date
ES2155384A1 true ES2155384A1 (en) 2001-05-01
ES2155384B1 ES2155384B1 (en) 2001-12-16

Family

ID=8308337

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9900983A Expired - Fee Related ES2155384B1 (en) 1999-05-12 1999-05-12 ELECTRONIC SYSTEM FOR THE MEASUREMENT OF THE ELECTRICAL IMPEDANCE OF THE TORAX.

Country Status (1)

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ES (1) ES2155384B1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494552A (en) * 1980-08-08 1985-01-22 R2 Corporation Physiological monitoring electrode system
US4887609A (en) * 1987-05-13 1989-12-19 The Methodist Hospital System Apparatus and method for filtering electrocardiograph signals
WO1990009146A1 (en) * 1989-02-16 1990-08-23 Air-Shields, Inc. Neonatal cardiorespirograph incorporating multi-variable display and memory
US5178154A (en) * 1990-09-18 1993-01-12 Sorba Medical Systems, Inc. Impedance cardiograph and method of operation utilizing peak aligned ensemble averaging
WO1993005574A1 (en) * 1991-09-09 1993-03-18 Quinton Instrument Company Ecg muscle artifact filter system
US5318036A (en) * 1992-03-17 1994-06-07 Hewlett-Packard Company Method and apparatus for removing baseline wander from an ECG signal
US5443073A (en) * 1991-09-12 1995-08-22 Drexel University System and method of impedance cardiography monitoring
US5762068A (en) * 1995-11-27 1998-06-09 Quinton Instrument Company ECG filter and slew rate limiter for filtering an ECG signal
US6016445A (en) * 1996-04-16 2000-01-18 Cardiotronics Method and apparatus for electrode and transthoracic impedance estimation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494552A (en) * 1980-08-08 1985-01-22 R2 Corporation Physiological monitoring electrode system
US4887609A (en) * 1987-05-13 1989-12-19 The Methodist Hospital System Apparatus and method for filtering electrocardiograph signals
WO1990009146A1 (en) * 1989-02-16 1990-08-23 Air-Shields, Inc. Neonatal cardiorespirograph incorporating multi-variable display and memory
US5178154A (en) * 1990-09-18 1993-01-12 Sorba Medical Systems, Inc. Impedance cardiograph and method of operation utilizing peak aligned ensemble averaging
WO1993005574A1 (en) * 1991-09-09 1993-03-18 Quinton Instrument Company Ecg muscle artifact filter system
US5443073A (en) * 1991-09-12 1995-08-22 Drexel University System and method of impedance cardiography monitoring
US5318036A (en) * 1992-03-17 1994-06-07 Hewlett-Packard Company Method and apparatus for removing baseline wander from an ECG signal
US5762068A (en) * 1995-11-27 1998-06-09 Quinton Instrument Company ECG filter and slew rate limiter for filtering an ECG signal
US6016445A (en) * 1996-04-16 2000-01-18 Cardiotronics Method and apparatus for electrode and transthoracic impedance estimation

Also Published As

Publication number Publication date
ES2155384B1 (en) 2001-12-16

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