Title:
APPARATUS FOR MEASURING INTERFACIAL IMPEDANCE BETWEEN THE BODY AND A STIMULATING ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2011/136409
Kind Code:
A1
Abstract:
The present invention relates to an apparatus for measuring interfacial impedance between the body and a stimulating electrode, comprising: a first electrode connected to some cells in the body; a second electrode connected to other cells in the body so as to provide a current which is applied by a stimulator to the first electrode through the cells; a measurement unit for selectively extracting voltages loaded on the first and second electrodes according to currents applied to the first and second electrodes; a charge storage unit to which a relative potential corresponding to a voltage difference between the first and second electrodes is stored; an A/D conversion unit for converting the signal corresponding to the relative potential into a digital signal and for outputting the digital signal; and an impedance calculation unit for calculating the interfacial impedance between the first and second electrodes according to the digital signal outputted from the A/D conversion unit and the current applied to the second electrode. Therefore, according to the present invention, interfacial impedance between the body and a stimulating electrode implanted to the brain or muscle of the body can be measured by using the difference in voltages loaded on each electrode.
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Inventors:
PARK SE-IK (KR)
LEE HOSEUNG (KR)
LEE HOSEUNG (KR)
Application Number:
PCT/KR2010/002696
Publication Date:
November 03, 2011
Filing Date:
April 28, 2010
Export Citation:
Assignee:
MI TECH CO LTD (KR)
PARK SE-IK (KR)
LEE HOSEUNG (KR)
PARK SE-IK (KR)
LEE HOSEUNG (KR)
International Classes:
A61B5/053
Foreign References:
| KR100333166B1 | 2002-04-18 | |||
| KR20040014852A | 2004-02-18 | |||
| KR20080012075A | 2008-02-11 | |||
| US4870341A | 1989-09-26 |
Other References:
See also references of EP 2564772A4
Attorney, Agent or Firm:
JANG, SEONG KU (KR)
장성구 (KR)
장성구 (KR)
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Claims: