Device for an electrode part for a wireless biopotential measurement unit
A device for an electrode part for a wireless biopotential measurement unit for attaching to the body, the measurement unit comprising a signal processor and transmitter part, and the electrode part including at least one measuring electrode for measuring a biopotential, the at least one measuring electrode communicating with the signal processor and transmitter part, at least the electrode part being provided with, on its side facing away from the body, a substantially covering screen material which is electrically connected to an earth electrode, the earth electrode being in contact with the body. The measuring electrode is surrounded by and isolated from an electrically conductive material, which is earthed to the signal processor and transmitter part.
1. A measurement unit for measuring a biopotential, the measurement unit comprising an electrode part for attaching, to the body of a living organism body, and a signal processor and transmitter part, the electrode part comprising a first side for attaching to the body and a second, opposite side for facing away from the body, the electrode part further comprising at least one measuring electrode oriented towards the first side of the electrode part for measuring a biopotential, the at least one measuring electrode communicating with the signal processor and transmitter part, and the electrode part being provided with, on the second side, an electric conductive screen material, the screen material being electrically connected to an earth electrode, the earth electrode oriented towards the first side and adapted to be in contact with the body, the electrode part further comprising an electrically conductive material that is earthed to the signal processor and transmitter part, wherein the at least one measuring electrode is surrounded by and electrically isolated from the electrically conductive material.
2. The measurement unit in accordance with claim 1 , wherein the earth electrode is substantially spot-shaped.
3. The measurement unit in accordance with claim 1 , wherein the earth electrode surrounds, at least partially, the at least one measuring electrode.
4. The measurement unit in accordance with claim 1 , wherein a contact path between the screen material and the earth electrode extends through the electrode part.
5. The measurement unit in accordance with claim 1 , wherein the electrode part is formed by a multilayered flexible material.
6. The measurement unit in accordance with claim 1 , wherein the height of the electrode part is smaller than 0.25 times the width.
7. The measurement unit in accordance with claim 1 , wherein the at least one measuring electrode is one of at least two measuring electrodes, wherein the measurement unit is configured such that the distance between the at least two measuring electrodes is approximately constant during movement of the body.
8. The measurement unit in accordance with claim 1 , wherein the at least one measuring electrode is one of at least two measuring electrodes, and comprising first contact paths from the at least two measuring electrodes to the signal processor and transmitter part that lay next to each other and are parallel.