SELF-EXPANSION ENDOVASCULAR STENT (VARIANTS) Russian patent published in 2004 - IPC

FIELD: medicine, namely device used in roentgen -endovascular surgery for restoring changed zones of blood vessels or other hollow tubular organs.

SUBSTANCE: according to first variant of invention stent includes metallic wire bent to zigzag shape and forming cylindrical surface. Said wire is made of cobalt-iron-chrome-nickel alloy "Plastocryst-08" and it has rectangular cross section with rounded angles. Stent has at least one section whose zigzag shaped wire portions are directed along lengthwise axis of stent and they have camber directed inside stent. According to second variant stent is in the form of wire bent in zigzag shape and defining cylindrical surface. Wire is made of cobalt-iron-chrome-nickel alloy "Plastocryst-08" and it has rectangular cross section with rounded angles. Zigzag shaped portions of wire are in the form of rhombic members with rounded angles, large diagonal of rhomb is inclined by angle 0 - 90 degrees relative to lengthwise axis of stent.

EFFECT: enhanced biological compatibility, maximum adaptation of stent to walls of hollow organ.

14 cl, 16 dwg