# US 5,341,812 A · Electrocardiograph monitor system and adaptor

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- Number: US 5,341,812 A
- Document ID: US5341812A
- Status: Granted
- Kind: A
- Application number: 08/056,714
- Filed: 1993-05-03
- Granted: 1994-08-30
- Earliest claimed: 1993-05-03
- Assignees: NDM Acquisition Corp.
- Inventors: Michael J. Allaire; Jeffrey W. Stone
- Web page: https://patentgrep.com/patent/US5341812A

## CPC

- A61B 5/303: {Patient cord assembly, e.g. cable harness}
- A61B 5/308: for electrocardiography [ECG]
- H01R 31/06: Intermediate parts for linking two coupling parts, e.g. adapter (with a holder adapted for supporting apparatus to which its counterpart is attached H01R33/94)
- A61B 2562/227: Sensors with electrical connectors
- H01R 13/24: resilient; resiliently-mounted
- H01R 2201/12: for medicine and surgery
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

An electrocardiograph system is provided wherein a single electrocardiograph cable may be used to interconnect a plurality of lead wires extending from a plurality of associated medical electrodes with a number of different ECG monitors. Each ECG monitor is connected to an adaptor which properly interconnects each monitor with the single electrocardiograph cable. A wire locking mechanism may be provided at one end of the electrocardiograph cable for securely coupling the lead wires to the cable. Further, a cable coupling mechanism may be provided at the other end of the cable for securely coupling the cable to the adaptor.

## Claims

### Claim 1

An adaptor for interconnecting an electrocardiograph apparatus and an electrocardiograph cable including a cable connector connected at one end thereof, said adaptor comprising:
machine coupling means for electrically interconnecting with the electrocardiograph apparatus;
circuit means, electrically connected to said machine coupling means, for conditioning electrical signals so that said electrical signals may be properly received by the electrocardiograph apparatus;
cable coupling means, electrically connected to said circuit means, for electrically interconnecting the cable connector and said circuit means whereby the electrocardiograph apparatus properly receives said electrical signals from the electrocardiograph cable; and
attachment means for mechanically securing said adaptor to the electrocardiograph apparatus.

### Claim 2 (depends on 1)

The adaptor as recited in claim 1 wherein said attachment means is a lanyard.

### Claim 3 (depends on 1)

The adaptor as recited in claim 1 wherein said machine coupling means includes at least one male circular element for electrically connecting with the electrocardiograph apparatus.

### Claim 4

An adaptor for interconnecting an electrocardiograph monitor and an electrocardiograph cable, said adaptor comprising a housing having machine coupling means mounted on a first end for connecting with the electrocardiograph monitor and a cable coupling means mounted on a second end for properly connecting with the electrocardiograph cable, said cable coupling means including at least one plunger contact comprising a slidable center shaft and biasing means for forcing said center shaft against the cable connector so as to electrically connect with the cable connector.

### Claim 5 (depends on 4)

The adaptor as recited in claim 4 wherein said machine coupling means comprises at least one male circular element for electrically connecting with the electrocardiograph apparatus.

### Claim 6

An adaptor for interconnecting an electrocardiograph apparatus and an electrocardiograph cable, said adaptor comprising:
machine coupling means for electrically interconnecting with the electrocardiograph apparatus;
circuit means, electrically connected to said machine coupling means, for conditioning electrical signals so that said electrical signals may be properly received by the electrocardiograph apparatus; and
cable coupling means, electrically connected to said circuit means, for electrically interconnecting the cable connector and said circuit means whereby the electrocardiograph apparatus properly receives said electrical signals, said cable coupling means including at least one plunger contact for electrically connecting with the cable connector, said at least one plunger contact comprising a slidable center shaft and biasing means for forcing said center shaft against the cable connector so as to electrically connect with the cable connector.