METHOD OF ENDOVENOUS LASER OBLITERATION OF AN INSUFFICIENT GREAT SAPHENOUS VEIN IN CASE OF ITS POSTTHROMBOPHLEBITIC CHANGES AND ANATOMICALLY COMPLEX STRUCTURE OF ITS ENTRY Russian patent published in 2018 - IPC A61B18/00 

FIELD: medicine.

SUBSTANCE: method refers to medicine, namely to minimally invasive treatment of patients with lower extremity varicose vein disease or postthrombophlebitic syndrome. Laser obliteration is carried out in two stages, following continuously one after another and carried out under constant ultrasound scanning. In this case, the first involves puncturing the great saphenous vein on the boundary of the middle and upper third of the tibia or in the lower third of the thigh. Laser light guide with a spherical radiator is introduced through an introducer into the lumen of the great saphenous vein. Light guide is moved to the place of increased resistance to the movement along the trunk of the great saphenous vein and subsequent laser obliteration of the great saphenous vein from the place of increased resistance to the movement of the laser light guide to the point of its puncture when moving the laser light guide along the trunk of the great saphenous vein from top to bottom. Second stage involves puncturing the great saphenous vein in the region of its entry, directly into the subvalvular space. Laser light guide with a spherical radiator is introduced through an introducer into the lumen of the great saphenous vein, moved to a place from which the great saphenous vein has already been obliterated at the first stage, and the laser obliteration of a trunk of the great saphenous vein from the place of obliteration performed in the first stage is carried out, up to the entry and sub-valvular space when moving the laser light guide along the trunk of the great saphenous vein in the direction from the bottom upwards. In this case, infiltration anesthesia along the trunk of the great saphenous vein is performed separately at the places of the first and second stages of laser obliteration. As the laser radiation, a wavelength of 1,550 nm is used with a constant frequency, with a radiation power of 10 W and a radiation density of 60–80 J/cm².

EFFECT: method allows to fully provide effective laser obliteration of an insufficient great saphenous vein in connection with postthrombophlebitic changes in it and in case of anatomically complex structure of its entry.

1 cl, 2 ex