Patent ID: 7998336

Claim:
A biosensor comprising: a proximal end and a distal end; a first layer comprising a first side edge having a first length and a second side edge opposite to the first side edge and having a second length, wherein the first and second lengths are different; a second layer comprising a first side edge having a first length and a second side edge opposite to the first side edge and having a second length, wherein the first and second lengths are different; the first and second layers fixed together by a third layer; the proximal end having a tapered part; a working electrode provided on the first layer and a counter electrode provided on the second layer, wherein the tip part of the working electrode is provided on the tapered part, and wherein the leads from the working and counter electrodes extend from the tapered part to the distal end, the biosensor further comprising a reference electrode and a tip part of the reference electrode is provided on the tapered part.