A semiconductor device employs a support structure to mitigate damage to dielectric layers having a low dielectric constant. A plurality of syndrome values is received corresponding to a received codeword and a value of an error locator polynomial corresponding to the received codeword is initialized. The statistical data generating module generates statistical data based on the read signals. The guide catheter is made of material collapsibledistensible in cross section to adopt a small shape when no catheter is present inside, and to distend to a large shape to accommodate passage of functional catheter therethrough.