Monitor and method for acquiring and processing electrical signals relating to bodily functions

• US 5,381,804 A
• Filed: 10/14/1993
• Issued: 01/17/1995
• Est. Priority Date: 10/15/1992
• Status: Expired due to Term

• Current Assignee: Nellcor Puritan Bennett LLC (Medtronic Plc)
• Original Assignee: Aspect Medical Systems, Inc. (Medtronic Plc)
• Inventors: Shambroom, John R.
• Primary Examiner(s): Sykes, Angela D.
• Application Number:
  US08/135,801
• Time in Patent Office: 460 Days
• Field of Search: 128/639-640, 128/642, 128/731-734, 128/741, 607/96, 607/115, 607/148
• US Class Current: 600/544
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/372 Analysis of electroencephalograms
• CPC Class Codes: A61B 5/6843 Monitoring or controlling sensor contact pressure
• CPC Class Codes: A61B 5/7217 of noise originating from a therapeutic or surgical apparatus, e.g. from a pacemaker
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass
• CPC Class Codes: Y10S 128/901 Suppression of noise in electric signal
• CPC Class Codes: Y10S 128/902 Biological signal amplifier

Abstract

A monitor for receiving electrical signals from a living body includes a power supply which is located in a housing for the monitor and a separate acquisition module which acquires signals through one or more electrodes connected to a body. Both data and power are transmitted over the same means between the power supply and the acquisition modules.

Claims

1. A monitor for receiving electrical signals from a living body and processing such signals to obtain information relating to a bodily function or organ, said monitor comprising

a power supply located in a housing of said monitor;

means for acquiring electrical signals through one or more electrodes connected to the body;

means for transmitting both data and power over said same means for transmitting between said housing for said power supply and said means for acquiring electrical signals.

2. The monitor for receiving electrical signals from a living body of claim 1 wherein said means for transmitting both data and power comprises a single transmission line.

3. The monitor for receiving electrical signals from a living body of claim 1 wherein said means for transmitting is connected to a transformer which couples signals from a means for processing and said power supply to said means for acquiring electrical signals.

4. The monitor for receiving electrical signals from a living body of claim 3 further comprising:

means for rectifying said coupled signals received by said means for acquiring electrical signals to produce a DC signal;

means for linearly regulating said DC signal to provide power at appropriate voltage levels to said means for acquiring electrical signals.

5. A monitor for receiving electrical signals from a living body and processing such signals to obtain information relating to a bodily function or organ, said monitor comprising

a power supply located in a housing of said monitor;

means for acquiring electrical signals through one or more electrodes connected to the body;

means for transmitting both biphase encoded data and power over said same means for transmitting between said housing for said power supply and said means for acquiring electrical signals.