Weaving method for nasal sinus stent and stent obtained thereof

Abstract

The present invention relates to a braiding method for a nasal sinus stent, comprising: providing a filament; providing a braiding tool having a longitudinal central axis, wherein the braiding 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 first anchor points, and the second shaping part is provided with n second anchor points; forming an initial configuration stent by around a circumferential direction of the braiding tool, allowing a single filament starting from 1st first anchor point 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, wherein the initial configuration stent has a circumference and n vertices with vertex interval obtained by dividing the circumference by n; 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. The sinus stent obtained by the above braiding method has good shape adaptability and is particularly suitable for being used as a self-expanding stent in the nasal cavity.