METHOD OF TREATING ARTERIOVENOUS SHUNTS ACCOMPANYING CHRONIC VENOUS INSUFFICIENCY OF LOWER EXTREMITIES Russian patent published in 2015 - IPC A61N5/00 

FIELD: medicine.

SUBSTANCE: laser coagulation of arteriovenous angiodysplasia is preceded by the intraoperative Doppler measurement of a blood velocity and an arteriovenous shunt diameter. A sphygmomanometer cuff is applied on the shin. A shunt region is located by means of a linear ultrasonic sensor. That is followed by the ultrasound-aided puncture of the arteriovenous shunt. A laser light guide of a diode laser is inserted through a catheter; the cuff pressure is injected until the blood circulation is completely stagnated in the subfacial portion of the arteriovenous shunt. The tissues surrounding the shunt are infiltrated by means of an anaesthetic solution until blood circulation is completely stagnated in the epifascial portion that is followed by laser coagulation. If the shunt diameter is 5 mm or more, the patient is exposed to a laser power of 15 W, and if the diameter is less than 5 mm, a laser power is specified to be 12 W.

EFFECT: method enables providing higher effectiveness, reducing therapeutic injuries of the patients with arteriovenous fistulas of the lower extremities, achieving the high aesthetic effect, reducing a pain component by the applicability of adequate power and energy of the laser light.

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