| abstract |
The invention discloses a 3D printing acellular matrix support for preventing external auditory canal stenosis, which comprises a support cap, a support main body and a support tail. The bracket cap is in a T-shaped wing shape, so that the bracket is prevented from falling off and shifting. The tail part of the bracket is in a curled semicircular shape, so that seepage and secretion are prevented from flowing into the tympanic membrane to cause myringitis and tympanic membrane perforation, and flow into the middle ear cavity through the tympanic membrane perforation to cause inflammation diffusion. The main body of the bracket is in a circular tube shape, can play a role in pressurizing and stopping bleeding, and the tube body is provided with a circular small hole, so that the effect of fully draining the skin seepage and secretion of the auditory canal can be achieved, and the drug delivery in the auditory canal can be carried out. The degradable composite tubular stent has three-dimensional porous shape, good biocompatibility and mechanical property, elasticity and flexibility, and can keep stable tubular shape. The invention can be used for reconstructing the external auditory canal, can be quickly constructed in a short time in an operating room, does not need to take the materials from the autologous skin, and avoids the complication possibly caused by the material-taking part. |