Surgical instrument for preparing a tympanic membrane graft

Abstract

The utility model discloses a kind of surgical instruments for preparing tympanic membrane graft, comprising: outer sleeve;Inner tube is arranged in outer sleeve, and inner tube is coaxially arranged with outer sleeve;Outer cutting knife is fixedly connected at the bottom end of outer sleeve;Inner cutting knife is fixedly connected at the bottom end of inner tube.In the utility model, through the design of inner cutting knife and outer cutting knife, the accurate cutting of cartilage and perichondrium can be realized respectively, the perichondrium skirt of cartilage periphery is retained after cutting, the risk of tissue damage caused by irregular or rough cutting edge is reduced, and the smooth incision helps the graft to better adhere to the damaged area, promotes healing and reduces the occurrence of postoperative complications.

Images