Biomedical device comprising a mechanically adaptive member

An electrical or electronic biomedical device comprising:

• a soft substrate composed of a polymeric material selected from elastomeric materials, thermoplastic elastomers, foams, gels, hydrogels or combinations thereof, the soft substrate having a first surface and an opposed surface;
• wherein said first surface and opposed surface are outer surfaces of the soft substrate;
• at least one electrically conductive track fixed to said substrate and configured to interface with a biological surface, the at least one electrically conductive track extending along a first portion of said substrate and within said first portion, the first portion arranged between a proximal end and a distal end of the substrate;
• and
• a rigid member composed of a mechanically adaptive material configured to be softened upon a softening trigger or fully degradable upon a degrading trigger, the rigid member extending only along a limited portion of the substrate and on said limited portion, the limited portion being within said first portion of the substrate,
• wherein a remaining portion of said first portion, outside the limited portion, is free from the rigid member,
• wherein the at least one electrically conductive track extends along and within said remaining portion which is free from the rigid member,
• wherein the rigid member is located on at least one of the first surface and the opposed surface;
• wherein the rigid member is located on no more than 80% of the total surface of one or both of said first surface and opposite surface of the soft substrate,
• wherein the rigid member is configured to be softened by at least one of UV light, liquid uptake, temperature change, pH change and ionic strength change.