METHOD FOR PLASTY OF PERFORATION FORAMEN OF TYMPANIC MEMBRANE Russian patent published in 2005 - IPC

FIELD: medicine, ORL-surgery.

SUBSTANCE: the present innovation deals with treating the lesions of tympanic membrane. For this purpose one should fix a transplant out of a flat bone of human fetal cranial arch. The transplant mentioned should be of 1 mm width, 0.1 mm thickness and its length being 2 mm higher against the size of perforation foramen. Fixation should be fulfilled due to laser biological welding in two points. One should put a fragment out of fetal dura mater above an osseous transplant being 2 mm higher against perforation foramen. Distal part of light guide's edge of semiconductor laser should be put on the transplant perpendicularly its surface. Welding should be carried out by contact technique in impulse mode at impulse duration being 450 msec and output laser radiation power being 8.5 W in 8 points. The method enables to achieve transplant's tight fixation, exclude its shift and prevent penetration of infection into tympanic membrane and keep sound passage through tympanic membrane.

EFFECT: higher efficiency of plasty.

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