Myringoplasty perforation and a small part should also extend over the posterior canal wall. The tympanomeatal flap is then replaced. The temporal fascia is harvested. An incision is made to raise medial meatal skin with tympanic membrane epithelium. The graft is placed on the outer surface of the tympanic membrane and a slit is made to tuck it under the handle of malleus. The ear is packed with gelfoam and antibiotics, and the incision is closed. Finally mastoid dressing is performed. Myringoplasty Myringoplasty is the closure of the perforation of pars tensa of the tympanic membrane. When myringoplasty is combined with
Membrane technology in the fluid and membrane phases can be equated at the solution-membrane interface. This principle is more important for "dense" membranes without natural pores such as those used for reverse osmosis and in fuel cells. During the filtration process a boundary layer forms on the membrane. This concentration gradient is created by molecules which cannot pass through the membrane. The effect is referred as concentration polarization and, occurring during the filtration, leads to a reduced trans-membrane flow (flux). Concentration polarization is, in principle, reversible by cleaning the membrane which results in the initial flux being almost totally restored. Using a