A New "Collagen Sponge" Artificial Dermis for the Repair of Tympanic Membrane Defects and External Auditory Canal Skin Defects at the Outpatient Clinic.

Clinical study of transcanal closure of tympanic membrane perforations using a collagen sponge

“…Recently, transcanal closure of a tympanic membrane using a collagen sponge (Terdermis ® ) has been reported in Japan 4 – 8 . Some reports used a collagen sponge with a sheet of silicon 4 , 5 , 8 and some reports used a collagen sponge without a sheet of silicon 6 , 7 . There are two reasons why we used a collagen sponge with a sheet of silicon.…”

“…Reports in Japan using this type of collagen substrate have found success rates of closure after the initial surgery and after repeat operation of 42.1-71.4 and 66.7-90.9 per cent, and have found the greatest success with dry, small or middle-sized perforations. [4][5][6][7][8] It seems fairly certain that this type of surgery is more effective on dry perforations and if wet, for perforations without active infection.…”

“…[4][5][6][7][8] Some reports used a collagen sponge with a sheet of silicon 4,5,8 and some reports used a collagen sponge without a sheet of silicon. 6,7 There are two reasons why we used a collagen sponge with a sheet of silicon. First, it is easier to place the collagen sponge with a sheet of silicon when the sheet of silicon is peeled back from the edges of the collagen layer.…”

“…2,3 However, Yuasa's method does require fibrin glue, which is a relatively expensive material. Recently, transcanal closure of the tympanic membrane using a collagen sponge (Terdermis ® ), the cost of which is relatively low, has been reported in Japan [4][5][6][7][8] and small dry perforations underwent operation in the Japanese reports. The aim of the present study is to introduce transcanal closure of the tympanic membrane using this collagen sponge to European and American doctors and to investigate the effectiveness of this surgery and its indications.…”