PORTABLE SELF-CONTAINED ELECTRICAL CARDIOMETRIC DEVICE WITH THREE FIXED-POSITION NONUNIFORMLY SPACED INPUT PROBES

• US 3,776,228 A
• Filed: 09/20/1971
• Issued: 12/04/1973
• Est. Priority Date: 09/20/1971
• Status: Expired due to Term

• Current Assignee: Herbert J. Semler
• Original Assignee: Herbert J. Semler
• Inventors: Semler, Herbert J.
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US05/181,862
• Time in Patent Office: 806 Days
• Field of Search: 128/2.5R,2.5T,2.6A,2.6B,2.6E,2.6F,2.6R,2.1E,2.1R,417,DIG.4
• US Class Current: 600/523
• CPC Class Codes: A61B 5/332 Portable devices specially adapted therefor
• CPC Class Codes: A61B 5/333 Recording apparatus specially adapted therefor

Abstract

A portable self-contained electrical cardiometric device employable for the quick monitoring and indicating of a heartproduced electrical signal in a person'"'"''"'"'s body. The device includes three specially positioned electrical probes which are for electrically contacting a person'"'"''"'"'s body to detect such a signal, a battery-powered electronic amplifier connected to these probes for amplifying a detected signal, and a suitable display or indicating unit for following the instantaneous amplitude of an amplified signal. The probes include fluid passages that communicate with a pump and a fluid reservoir in the device from which a conductive fluid may be ejected to enhance the electrical contact between the probes and a person'"'"''"'"'s skin.

Claims

1. In a self-contained portable electrical cardiometric device including a housing, electrical circuit means therein for processing heart-produced electrical signals including positive, negative and ground input terminals for said signals, a power source for said circuit means, and indicator means coupled to said circuit means for indicating heart activity, means for electrically contacting a person'"'"''"'"'s body and picking up heart-produced electrical signals therein, said means consisting of three electrically conductive probes, including a positive, a negative and a ground probe each connected to a corresponding one of said input terminals, mounted in spacedapart fixed triangularly disposed positions on said housing, said positive and negative probes being spaced apart by a distance of at least seven centimeters, and said ground probe being disposed closer to the negative probe than to the positive probe.

2. In a self-contained portable electrical cardiometric device including a housing, electrical circuit means therein for processing heart-produced electrical signals, a power source for said circuit means, and indicator means coupled to said circuit means for indicating heat activity, means connected to said circuit means for electrically contacting a person'"'"''"'"'s body and picking up heart-produced electrical signals therein, said means comprising three electrically conductive probes mounted in spaced-apart fixed triangularly disposed positions on said housing, two of said probes being spaced apart by a distance of at least seven centimeters, and the third probe being disposed closer to one of said two probes than to the other probe, with the distance between saiD third and one probes being less than 7 centimeters.

3. The device of claim 2, wherein said electrical circuit means includes positive, negative and ground input terminals, said one probe is connected to said negative terminal, said other probe is connected to said positive terminal, and said third probe is connected to said ground terminal.

4. In a self-contained portable electrical cardiometric device including a housing, electrical circuit means therein for processing heart-produced electrical signals, a power source for said circuit means, and indicator means coupled to said circuit means for indicating heart activity, means connected to said circuit means for electrically contacting a person'"'"''"'"'s body and picking up heart-produced electrical signals therein, said means consisting of three electrically conductive probes mounted in spaced-apart fixed triangularly disposed positions on said housing, two of said probes being spaced apart by a distance of at least 7 centimeters, and the third probe being disposed closer to one of said two probes than to the other probe, with the distance between said third and other probes being less than the distance between said one and said other probes.

5. The device of claim 4, wherein said electrical circuit means includes positive, negative and ground input terminals, said one probe is connected to said negative terminal, said other probe is connected to said positive terminal, and said third probe is connected to said ground terminal.