The invention discloses a
medicine release instrument and an
endoscope assembly, and relates to the technical field of endoscopes. The
drug release instrument comprises a first tube body, a
balloon and a light-emitting structure. The
balloon is arranged to be of a light-transmitting and expandable structure, the inner cavity is defined by the structural layer of the
balloon, the inner cavity and the far end of the first tube body are arranged in a sealed mode and communicate with each other, meanwhile, the first tube body extends into the inner cavity, and then the light-emitting structure is arranged in the balloon; light emitted by the light-emitting structure and the photosensitive cross-linked
medicine composite layer located outside the structural layer are utilized to induce a cross-linking reaction, after the balloon stretches into the
uterus, liquid can be injected into the balloon through the first tube body so that the balloon can be expanded, the balloon can abut against the
endometrium after being expanded, and after the light-emitting structure emits the light, the light-emitting structure can emit the light. The photosensitive cross-linked
drug composite layer can be adhered to the surface of the
endometrium, so that the
drug in the photosensitive cross-linked drug composite layer can be fully and tightly adhered to the
endometrium, and the endometrium can be continuously treated or repaired.