Patent ID: 7857759
Filing Date: 2010-12-28
Classification: A61B,A61N

Abstract:
1. An extraction device for extracting an analyte in living tissue through skin, the device comprising: a first path-forming electrode part; a first extraction electrode part for extracting an analyte; a through-current electrode part; and a power supply part for supplying electrical energy to the first path-forming electrode part, the first extraction electrode part, and the through-current electrode part, for forming analyte transmission paths in the skin for the passage of the analyte, and for extracting the analyte at the first extraction electrode part; wherein the first path-forming electrode part comprises a first path-forming electrode connected to the power supply part, and a first chamber comprising purified water/ion-conductive material, wherein the purified water/ion-conductive material contacts the first path-forming electrode; wherein the first chamber is configured such that the purified water/ion-conductive material; is configured to contact the skin over an area of less than 25 mm wherein, during formation of the analyte transmission paths, the first path-forming electrode part is connected to the power supply part; and wherein, during analyte extraction, the first path-forming electrode part is disconnected from the power supply part and the first extraction electrode part is connected to the power supply part.