Sensor unit for continuous blood glucose measurement
The present disclosure relates to a sensor member for continuous blood glucose measurement, wherein a first electrode layer and a second electrode layer are laminated to be misaligned from each other in the process of forming an electrode layer of the sensor member for continuous blood glucose measurement, so that an electrical contact phenomenon between the first electrode layer and the second electrode layer, which may occur in the process of cutting both side surfaces of the sensor member in the widthwise direction, is prevented, and accordingly, product defects are prevented and the stability of the sensor performance is improved.
1 . A sensor unit for continuous glucose measurement, the sensor unit comprising:
a sensor body; and
a sensor probe unit extended from one side of the sensor body in one direction and configured to be inserted into a body,
wherein the sensor probe unit includes:
a substrate extending in the one direction;
a first electrode layer disposed on an upper surface of the substrate to be positioned toward one side in a width direction of the substrate;
a first insulation layer disposed on the substrate to entirely cover an upper surface of the first electrode layer;
a second electrode layer disposed on the first insulation layer to be positioned toward the other side in the width direction of the substrate;
a second insulation layer disposed on the first insulation layer to entirely cover an upper surface of the second electrode layer,
a third electrode layer disposed on a lower surface of the substrate; and
a third insulation layer disposed on the substrate and on the third electrode layer to cover a lower surface of the third electrode layer,
wherein:
the first electrode layer and the second electrode layer are disposed in opposite directions to each other,
the sensor probe unit includes a first cut surface at one side surface of the sensor probe unit by cutting one side of a stack and a second cut surface at the other side surface of the sensor probe unit by cutting the other side of the stack,
the stack is provided in a state in which the substrate, the first electrode layer, the second electrode layer, the third electrode layer, the first insulation layer, the second insulation layer and the third insulation layer are stacked,
the first electrode layer is exposed at the first cut surface and is covered by the first insulation layer at the second cut surface,
the second electrode layer is exposed at the second cut surface and is covered by the second insulation layer at the first cut surface, and
the first electrode layer exposed at the first cut surface and the second electrode layer exposed at the second cut surface are configured to measure glucose from body fluid in a state in which the sensor probe unit is inserted into the body.
2 . The sensor unit for the continuous glucose measurement of claim 1 , wherein the first electrode layer and the second electrode layer are disposed along a longitudinal direction of the sensor probe unit.
3 . The sensor unit for the continuous glucose measurement of claim 1 , wherein the third electrode layer is covered by the third insulation layer at the first cut surface and at the second cut surface.
4 . The sensor unit for the continuous glucose measurement of claim 1 , wherein the first electrode layer and the second electrode layer are disposed to extend through the sensor body.