#$%^&*AU2017203777A120180104.pdf#####ABSTRACT Described embodiments include an apparatus that includes an expandable structure, configured for insertion into a body of a 5 subject, and a plurality of conducting elements coupled to the expandable structure. Each of the conducting elements comprises a respective coil and has an insulated portion that is electrically insulated from tissue of the subject, and an uninsulated portion configured to exchange signals with the 0 tissue, while in contact with the tissue. Other embodiments are also described. 3203295v11/3 C*4 Q0 co CY) cn C) z co w co LU CN4 CNN C%4 LO C114 014 Cl") 00 C14
