US Patent 7871365 Gynecological instrument

An apparatus is described for irradiating cervical cancer, comprising multiple source guide tubes with a coupling piece situated outside the patient that connects the tubes outside the patient. The source guide tubes are formed such that the portions of the tubes situated in the patient upon insertion hook to each other so that the tubes are locked relative to each other. In an embodiment, the apparatus further comprises a central catheter tube to be guided into the uterus, which is provided with a flange-shaped stop for stabilizing the central tube relative to the uterus, the stop being formed for securing a position of the central tube relative to the further source guide tubes.