A kind of outer tube for applying the lavation of what wound drainage is disclosed herein, this outer tube can be used with drainage irrigating tube collocation. The outer tube is connected with each other comprising a cone cell front end and an open tubular portion. In addition, the outer tube is configured to the tubular portion of the opening from outer tube can be allowed to be loaded into and/or remove drainage irrigating tube in conjunction with drainage irrigating tube during wound lavage.在此揭示一種應用於傷口引流灌洗之外套管，此外套管可和引流灌洗管搭配使用。所述外套管，包含一錐狀前端和一開放的管狀部，彼此相連。此外，所述外套管被設置成可在傷口灌洗過程中，可與引流灌洗管結合，允許自外套管之開放的管狀部載入和/或移除引流灌洗管。
