METHOD FOR TREATING DACRYOCYSTITIS (VARIANTS) Russian patent published in 2005 - IPC

FIELD: medicine.

SUBSTANCE: by the first variant, one should widen lacrimal point, pass with the probe through inferior lacrimal canaliculus up to the rest into the bone followed by visualization of nasal cavity with endoscope, control for light guide's position should be performed due to diaphanoscopic X-raying via the bone. Burning through osseous tissue of lateral wall in nasal cavity should be fulfilled with laser radiation by developing anastomosis between lacrimal sac and nasal cavity till visualization of light guide in nasal tract. Moreover, lateral wall of nasal cavity should be burned through with a solid-state Nd YAG laser at wave length being 1.44 mcm, impulse energy of 300-440 mJ, impulse frequency 10-20 Hz, impulse duration of 50-150 mcsec. Time for osseous impact corresponds to 0.4-4 min. Intubation of developed anastomosis should be carried out through inferior lacrimal point by withdrawing into nasal cavity with drainage out of silicone as a hollow tube. By the second variant, one should perform visualization of nasal cavity with endoscope followed by burning through bony tissue of lateral wall in nasal cavity with laser radiation. Moreover, light guide's fiber should be applied out of nasal cavity. Burning through should be performed by contact being 3 mm to the front against concha nasalis media in projection of lacrimal fossa with a solid-state Nd YAG laser at wave length being 1.44 mcm at impulse energy of 300-350 mJ, impulse frequency of 10-12 Hz, impulse duration of 50-150 mcsec, time for impact is 0.4-4 min. Then comes passing acutely through inferior lacrimal canaliculus till probe's appearance in developed anastomosis. Then one should fulfill intubation of developed anastomosis through inferior lacrimal point at withdrawing into nasal cavity with drainage out of silicone as a hollow tube. The method enables to achieve permeability of tear-secretion tract at low traumatism and high efficiency in postoperative period at no relapses on closing the anastomosis developed between lacrimal sac and nasal cavity.

EFFECT: higher efficiency of therapy.

2 cl, 2 ex