Abstract: The present application discloses an invention of a surgical operation method using microwave characterized in that microwaves are radiated to bio-tissue from a monopolar type operating electrode attached to the tip of a coaxial cable for transmitting microwaves, and an operation of coagulation, hemostasis or transection is performed on the bio-tissue with the use of thermal energy generated from the reaction of the microwaves on the bio-tissue. The bio-tissue can be operated in an easy, safe and bloodless manner. Therefore, the present method can be utilized for an operation on a parenchymatous organ having a great blood content or for coagulation or transection on a parenchymatous tumor.According to the present method, there can be performed an operation on liver cancer which has been conventionally regarded as very difficult.Apparatus for embodying the present method can be economically manufactured in a small size.

Abstract: A cassette including a light-tight housing having a pair of opposed sidewalls and an open end for insertion of a film into the space between the sidewalls. One of the sidewalls has an opening therethrough and the opening is surrounded by a first frame whose outer margin is covered by a panel opaque to visible light but transparent to X-rays. A second frame is disposed within the first frame and is provided with an illumination screen on its inner margin. The first and second frames have slots in the sides thereof for receiving pins on an actuator member which partially embraces the first frame, the slots in the second frame being inclined so that the illumination screen will move into and out of a position contiguous to the film in the space between the sidewalls when the actuator member moves back and forth longitudinally of the one sidewall relative to the first frame.