MEDICAL DEVICE FOR ELIMINATION OF DIASTASIS AND RESTORATION OF INTEGRITY OF INJURED PERIPHERAL NERVE AND METHOD OF ITS MANUFACTURING

摘要

FIELD: medicine.;SUBSTANCE: medical device for elimination of diastasis and restoration of integrity of injured peripheral nerve consists of tube from compatible with tissues and absorbable in tissues biomaterial, containing substance, which stimulates post-traumatic regeneration of nerve fibres and diastasis elimination. As tube, medical device contains fragment of bird feather calamus. As substance, stimulating post-traumatic regeneration of nerve fibres and diastasis elimination bird feather calamus contains hydroxylapatite or fluorohydroxylapatite. Method of manufacturing medical device for diastasis elimination and for restoration of injured peripheral nerve restoration consists in the following: bird feather with hole diametre which is 1.5-2.0 mm larger than diametre of injured nerve is selected, from bird feather calamus fragment with length from 5 to 15 cm, correspondingly 1-5 cm larger than injured nerve diastasis, is cut out, thickness of wall of feather calamus is reduced to 0.8-1.0 mm. Calamus fragment is kept for 2-3 days in 10 per cent neutral water formalin solution. After that feather calamus fragment is kept for from 3 to 5 days in water solutions of ethyl alcohol of increasing concentration from 70 to 90%. Feather calamus fragment is kept for from 1 to 2 days in 10% water solution of salicylic acid in order to change its hystostructure. Hydroxylapatite or fluorohydroxylapatite are precipitated on internal and external surface of feather calamus fragment, after which feather calamus fragment is sterilised. Method of manufacturing medical device for elimination of diastasis and restoration of injured peripheral nerve integrity in accordance with the second version consists in the following: bird feather with hole diametre which is 1.5-2 mm larger than diametre of injured nerve is selected, from bird feather calamus fragment with length from 5 to 15 cm, correspondingly 1-5 cm larger than injured nerve diastasis, is cut out. Bird feather calamus fragment is mechanically cleaned outside and inside, boiled in water for 3-4 hours, kept for 3-4 days in 10% neutral formalin solution, kept for 5-7 days in 70% water solution of ethyl alcohol. Hydroxylapatite or fluorohydroxylapatite are precipitated on internal and external surface of bird feather calamus fragment, after which bird feather calamus fragment is sterilised.;EFFECT: inventions ensure making medical device for diastasis elimination and restoration of injured peripheral nerve integrity simpler and cheaper and method of such device manufacturing.;9 cl, 1 dwg