Removal device for cutting external bone fixation needle passage or soft tissue around fixation nail passage

The invention discloses a release device for cutting soft tissue around an external bone fixing needle passage or a fixing nail passage, and relates to the technical field of medical instruments, the release device comprises a scraper knife, the cross section of the scraper knife is bent, and the inner side wall of the scraper knife is used for allowing a fixing needle or a fixing nail outside the soft tissue to partially lean against; a first cutting edge for cutting soft tissue wound on a fixing needle or a fixing nail is arranged at one end of the first blade; the back knife is located at the end, close to the first blade, of the scraper knife and located on the outer side of the scraper knife, and a second blade used for cutting soft tissue wound around the fixing needle or the fixing nail and soft tissue on one side of the fixing needle or the fixing nail is arranged at one end of the back knife. The blade face of the first blade inclines towards the inner side of the scraper knife. Or the blade face of