A C-nitroso compound having a molecular weight ranging from 225 to 1,000 on a monomeric basis wherein a nitroso group is attached to a tertiary carbon, which is obtained by nitrosylation of a carbon acid having a pKa less than about 25, is useful as an NO donor. A pair of electrodes are placed on opposed tissue surfaces, and radio frequency power is applied through the electrodes to cauterizing a tissue mass therebetween. The fiber optics provide for accurately transmitting light to viewed objects and images of viewed objects, respectively. The adhering layer is made of a compound material and adhered on an inner layer for protecting the inner surface of the soft circuit board and the RFID as well.