Weaving method for nasal sinus stent and stent obtained thereof

A braiding method for a nasal sinus stent, the braiding method comprising:

• providing a filament;
• providing a braiding tool having a longitudinal central axis, wherein the weaving tool comprises a first shaping part and a second shaping part which are axially spaced from each other;
• wherein the first shaping part is provided with n uniformly-spaced first anchor points (1111, 1112 . . . 111n) for hooking the filament in a first cross section perpendicular to the longitudinal central axis;
• the second shaping part is provided with n uniformly-spaced second anchor points (1211, 1212 . . . 121n) for hooking the filament in a second cross section perpendicular to the longitudinal central axis;
• wherein n is an integer in 3-59;
• forming an initial configuration stent around a circumferential direction of the weaving tool, by allowing a single filament starting from a 1st first anchor point (1111) on the first shaping part, coming across m1 vertex intervals to extend towards the second anchor point, and then coming across m2 vertex intervals to extend towards the first anchor point, so as to complete a first “V” shaped braiding path, and then repeating the “V” shaped braiding path until the single filament returns to the 1st first anchor point (1111), wherein the initial configuration stent has a circumference and n vertices;
• m1 and m2 are integral multiples of 0.5, the sum of m1+m2 is an integer, and the sum of m1+m2 is not an integral multiple of a divisor of n, and wherein the divisor of n is not equal to 1.