LIFE DETECTING MEDICAL INSTRUMENT

• US 3,706,308 A
• Filed: 10/19/1970
• Issued: 12/19/1972
• Est. Priority Date: 10/19/1970
• Status: Expired due to Term

• Current Assignee: Erwin Roy John, Robert Laupheimer
• Original Assignee: Erwin Roy John, Robert Laupheimer
• Inventors: John, Erwin Roy, Laupheimer, Robert
• Primary Examiner(s): Howell, Kyle L.
• Application Number:
  US05/081,653
• Time in Patent Office: 792 Days
• Field of Search: 128/2.6R.2.6F,2.6G,2.1R,2.1B,2.1A,2.5R,2.5S,2.5T
• US Class Current: 600/483
• CPC Class Codes: A61B 5/0245 by using sensing means generating electric signals, i.e. ECG signals
• CPC Class Codes: A61B 5/291 for electroencephalography [EEG]
• CPC Class Codes: A61B 5/332 Portable devices specially adapted therefor
• CPC Class Codes: A61B 5/377 using evoked responses

Abstract

An electronic medical instrument to detect the presence or absence of life includes an electroencephalograph (EEG) and an electrocardiogram (EKG), connected to one or more data scanners, a stimulator, an analog or digital data analysis device such as an average response computer, a graphic recorder, and a time stamp. A portable version of this instrument is hand-carried and gives a visual display indicating the presence or absence of life.

Claims

1. A portable instrument for the detection of the presence of life in a person, the instrument comprising a body portion, a handle portion, a visual display means, and protruding connecting means;

said protruding connecting means including a plurality of electrodes adapted to be rapidly fastened to the patient;

said body portion including an electric shock stimulator means and a timer means, said stimulator means being connected to said timer means and to one of said electrodes to provide timed electric shocks to the patient, an electroencephalograph amplifier means connected to at least one of said electrodes, a data averaging means connected to said electroencephalograph amplifier means and said stimulator means, an electrocardiograph amplifier means connected to at least one of said electrodes, said visual display means being connected to said data averaging means and said electrocardiograph amplifier means.

2. An instrument as in claim 1 and also including a cardiotachometer in said body portion and a meter in said visual display means connected to said cardiotachometer.

3. An instrument as in claim 1 wherein the data averaging means is an average response computer including, connected in series, a polarity reversing circuit, a timing circuit, an integrating circuit and an up-down counter circuit.

4. An instrument as in claim 1 wherein at least one of said electrodes comprises a needle connected to said electroencephalograph amplifier means, said needle being spring-loaded and releasable by a trigger within said handle portion.