A device having a rail and a block includes a rail and a block. A sealing member is deployed intravascularly into the target vessel, and an anchor member is deployed extravascularly of the target vessel. Safe and easily implemented support for the load to be transported is achieved by arranging the support member to move along the inner walls of the rails and guided by the inner walls to set it against the load. On irradiation, partial transfer of the excitation energy from the donor to the acceptor takes place, resulting a broad emission covering the entire range from 400-700 nm to give bright white light emission with CIE coordinates of. A co-solvent is added to the first quantity of liquid and mixed with the first quantity of liquid to reverse the phase separation of the alcohol-water layer. The adjustment unit is disposed in a position such that the adjustment unit is affected by the self-heating of the image pickup unit.