# US 7,610,085 B2 · Simplified ECG monitoring system

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- Number: US 7,610,085 B2
- Document ID: US7610085B2
- Status: Granted
- Kind: B2
- Application number: 11/519,520
- Filed: 2006-09-12
- Published: 2008-03-27
- Granted: 2009-10-27
- Earliest claimed: 2006-09-12
- Inventors: Dean O. Allgeyer
- Web page: https://patentgrep.com/patent/US7610085B2

## CPC

- A61B 5/28: for electrocardiography [ECG]
- A61B 5/251: Means for maintaining electrode contact with the body
- A61B 5/265: containing silver or silver chloride
- A61B 5/02233: {Occluders specially adapted therefor (tourniquets A61B17/132)}
- A61B 5/145: Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value {; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue} (non-radiation detecting or locating of foreign bodies in blood A61B5/06)
- A61B 2562/0215: Silver or silver chloride containing
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A simplified device and method for continuous ECG monitoring incorporates electrodes in a pulse oximeter finger probe and/or in a blood pressure cuff. The electrodes in the pulse oximeter and blood pressure cuff generate a continuous ECG tracing without the use of disposable electrodes connected to multiple electrical wires in an ECG harness. In another embodiment, simplified ECG monitoring system can act as a secondary ECG input to a system that uses a primary ECG input as well.

## Claims

### Claim 1

In an ECG patient monitoring system with an ECG tracing display, the improvement consisting essentially of:
a single blood pressure cuff;
a single pulse oximeter;
a single ECG lead consisting of a Lead I with a signal that is generated by;
a first electrical connection operatively connected to the ECG monitoring system and to one electrode located on an inner side of the pulse oximeter for operative contact with a patient's skin on one of the right and left arm or hand;
a second electrical connection operatively connected to the ECG monitoring system and to one electrode on the an inner side of the blood pressure cuff for operative contact with the patient's skin on the other of the right and left arm to create the ECG Lead I; and
an electrical ground.

### Claim 2 (depends on 1)

The invention of claim 1, wherein the electrodes are dry electrodes comprising a sintered coating of Ag/AgCl.

### Claim 3 (depends on 1)

The invention of claim 1, wherein the electrical ground includes an electrode located on the inner side of the blood pressure cuff.

### Claim 4 (depends on 3)

The monitoring system of claim 3, further including at least one of hardware and software polarity detection logic.

### Claim 5 (depends on 1)

The monitoring system of claim 1, wherein the electrical ground includes an electrode located on the inner side of the pulse oximeter.

### Claim 6 (depends on 5)

The monitoring system of claim 5, further including at least one of hardware and software polarity detection logic.

### Claim 7

A system for monitoring a patient's oxygen saturation level, blood pressure, and cardiac function described by a Lead I ECG tracing, consisting essentially of:
an ECG monitoring system with at least one ECG display;
a single blood pressure cuff with an inner and outer surface, adapted to be mounted on one of the right and left side of the patient and connected to at least one blood pressure display;
a single pulse oximeter with an inner and outer surface, adapted to be mounted on the other of the right and left side of the patient and connected to at least one oxygen saturation display;
a first ECG electrode located on the inner surface of the pulse oximeter and operatively connected to the ECG monitoring system;
a second ECG electrode located on the inner surface of the blood pressure cuff and operatively connected to the ECG monitoring system;
a ground electrode mounted on the inner surface of the blood pressure cuff and operatively connected to an electrical ground; and
wherein the electrical potential across the ECG electrodes and the ECG monitoring system generate an ECG Lead I.

### Claim 8 (depends on 7)

The monitoring system of claim 7, wherein the ECG display, the oxygen saturation display, and the blood pressure displays comprise at least one unitary display of the ECG tracing, the oxygen saturation level, and the blood pressure.

### Claim 9 (depends on 7)

The monitoring system of claim 7, wherein the ECG electrode connected to the pulse oximeter is an integral part of the pulse oximeter.

### Claim 10 (depends on 9)

The monitoring system of claim 9, wherein the ECG electrode is comprised of a sintered coating of Ag/AgCl.

### Claim 11 (depends on 10)

The monitoring system of claim 10, wherein all of the ECG electrodes are comprised of a sintered coating of Ag/AgCl.

### Claim 12 (depends on 11)

The monitoring system of claim 11, wherein the ECG electrode connected to the blood pressure cuff is an integral part of the blood pressure cuff.

### Claim 13 (depends on 12)

The monitoring system of claim 12, further comprising at least one of hardware and software polarity detection logic.

### Claim 14 (depends on 7)

The monitoring system of claim 7, wherein the ECG electrodes are removably affixed to the inner surfaces of the pulse oximeter and blood pressure cuff.

### Claim 15 (depends on 14)

The monitoring system of claim 14, wherein all the electrodes are comprised of a sintered coating of Ag/AgCl.

### Claim 16 (depends on 7)

The monitoring system of claim 7, wherein the ground electrode is located on the inner surface of the pulse oximeter.