The artificial silica gel membrane

The artificial silica gel membrane       The artificial tympanic membrane is a thin film device with silicon rubber and human tympanic membrane thickness and the size of the same film or with frame, used to subsidize the tympanic membrane perforation, promote healing, improving listening.        Previously, used paper, cotton piece, egg membrane, garlic, latex, perforation of tympanic membrane patch, although they can promote the healing of perforation of tympanic membrane, but low strength, and the performance changes with the environmental factors, aging resistance performance is poor, molding difficult, not as an artificial device placed for a long time, listening comprehension. Over the past 20 years, the rapid development of medical silicone rubber, the 1960 Jayapashy will be 0.15 mm thick translucent silicon rubber film adhesive closure of the perforation; reported in 1963 that Cortopssi operation for repairing tympanic membrane perforation, silicone rubber membrane covering the fracture is satisfactory.       III type artificial tympanic membrane specifications  large size Medium size Small size The elliptical long diameter ( mm ) 10 9 8 lliptic short diameter ( mm ) 9 8 7 Tympanic membrane thickness ( mm ) 0.10 0.10 0.10 Semicircular supporting ring diameter ( mm ) 0.8 0.8 0.8 Small shank diameter ( mm ) 0.8 0.8 0.8