The invention provides a chest drainage tube for slowly releasing
analgesic medicine and a preparation method of the chest drainage tube, and belongs to the technical field of medical nano
biological materials. The invention provides a chest drainage tube capable of slowly releasing
analgesic medicine. The chest drainage tube comprises a drainage tube body and
local anesthetic composite hydrogel loaded on the outer surface of the drainage tube body. The
local anesthetic composite hydrogel is attached to the outer surface of the drainage tube and can slowly release the loaded
local anesthetic, the hydrogel is used as a
drug carrier, the first-time
drug loading amount is increased, the effective concentration of the local
anesthetic can be maintained in the tube indwelling period through slow degradation of the hydrogel, and the local
anesthetic in the tube indwelling period can be reduced. The long-acting
analgesic effect is achieved, the basic purpose of postoperative chest drainage can be achieved, the long-term sustainable
analgesic effect can be achieved, the adverse effects caused by a traditional analgesic method are obviously reduced, the pain caused by indwelling of a chest duct after a
surgery can be obviously relieved, and
rehabilitation of the patient is promoted. And theoretical support is provided for subsequent research and expansion to
abdominal cavity operations and
pelvic cavity operations.