Apparatus and system for measuring electrical potential variations in human body
US6026321A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1998 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Mar 31, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/903
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for measuring potential variations in the human body, comprising: a pair of conductors, an attachment patch for attaching the conductors to the measurement sites; an amplifier that amplifies, as AC signals, the potential variations input from the conductors through connecting wires, a transmitter that transmits the amplified signals, a battery that supplies electric power to the amplifier and transmitter, a voltage-divider circuit that divides the voltage applied from the battery, and a compensator circuit that applies a voltage so divided to the amplifier as a reference voltage and, concurrently, rejects DC components input to the conductors, using the divided voltage as a reference voltage. Hence is provided a compact apparatus for measuring body signals such as myoelectric potentials, without restricting the movements of the test subject.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.