Improvements relating to monitoring systems

Abstract From the Canadian patent

Method and electrode assemblies for using or installing an electrode (especially enzyme electrode) in vivo in which a, protecting medium is introduced at the installation site to suppress adverse effects on the electrode's output. The medium is preferably an isotonic solution (e.g. saline) and/or a buffer solution and/or an anti-coagulant, and may be of increased viscosity (e.g. a gel or hydrogel), and may be coated on the electrode assembly. The preferred electrode assembly is a needle within a trocar cannula preferably with the needle tip set back to form a recess to contain gelled medium which can then be fed with liquid medium. The assembly can be made as a sterilised, sealed pack …