The invention discloses a medical developing marker and a manufacturing method thereof, and relates to the field of
medical instruments, the medical developing marker comprises a
closed tube, the outer wall of the
closed tube is provided with a bionic barb structure, the bionic barb structure is distributed in a flexible zigzag convex manner, and the bionic barb structure and the
closed tube are integrally formed through an
injection molding process; a
closed cavity is arranged in the closed tube, four developing strips are symmetrically arranged in the tube wall of the
closed cavity, the tube wall of the region where the developing strips are located is etched to form a weak band, and a developing material layer and a sustained-release
medicine layer are sequentially deposited at the weak band. The developing material layer and the sustained-release
drug and / or marked nano-particle layer are alternately deposited to form a
functional composite layer, and the
functional composite layer can directionally rupture to release the therapeutic
drug under the action of implantation pressure. The marker integrates the functions of precise development, tissue anchoring and
drug sustained release, is adaptive to multi-mode imaging such as
ultrasonic imaging, X-
ray imaging,
CT imaging,
MRI imaging and PET-
CT imaging, and has remarkable
clinical value in precise positioning treatment of
solid tumors such as
breast cancer and
liver cancer.