A device for use in the repair of an ear drum in a subject in need of such treatment, said device: having a tensile strength Youngs Modulus between approximately 12.5 and 40 MPa; comprising one or more membrane layers, wherein at least one membrane layer comprises a plurality of pores; and wherein the device can support proliferation, migration and/or adhesion of cells selected from the group comprising at least any one or more of: keratinocytes, fibroblasts, vascular cells, mucosal epithelial cells, and stem cells.処置を必要とする対象において鼓膜の修復に使用され、およそ12.5~40MPaの引張強さヤング率を有し、1つ以上の膜層を含み、そのうち少なくとも1つの膜層が複数の孔を含む、デバイスであって、角質細胞、線維芽細胞、血管細胞、粘膜上皮細胞、および幹細胞のうちの少なくとも任意の1つ以上を含む群から選択される細胞の増殖、遊走および/または接着を支持し得る、デバイス。【選択図】図4