A system and method for automatically adjusting the gain for a shock lead system in an implantable medical device is provided. The adhesive sheet for a precision electronic member has an adhesive layer comprising an acrylic copolymer obtained by copolymerizing a monomer mixture which comprises alkyl acrylate having 4 or less carbon atoms in an alkyl group and vinyl acetate in a proportion of 50:50 to 99. The actuating mechanism is able, in the second position, to butt against an integral portion of the fastening mechanism that prevents displacement of the actuating mechanism from the first to the second position. A method for producing an optoreflective structure comprising providing a substrate supporting a first cladding layer having a first planar cladding surface; disposing a waveguide material on the first cladding layer; and forming on the waveguide material a second cladding layer having a second planar cladding surface. There is a means for closing such elongated member after the foam material has been added and also a means for securing the cup like member to such elongated member.