Stent for use in intestinal tract, and weaving method therefor
AssigneesMicroport Urocare (Jiaxing) Co., Ltd., Microport Urocare (Shanghai) Co., Ltd.
InventorsRan GENG, Jiabo WANG, Xiangyang ZHANG, Zhenzhong FU
Life of this patent
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Abstract
A stent for use in the intestinal tract and a weaving method therefor. A head section and a tail section of the stent are both weaved by a process comprising: moving a first wire in a first V-shaped bending manner between two adjacent rows of positioning pins until all or half of the positioning pins in a first layer region or in a third layer region are wound, and in the case where half of the positioning pins in the first layer region or in the third layer region are wound, winding all the remaining positioning pins in the first layer region or in the third layer region with a second wire.
Claims14
A weaving method for a stent used in an intestinal tract, applied to a cylindrical clamp, the cylindrical clamp being provided with a first layer area, a second layer area and a third layer area arranged sequentially in an axial direction, the first layer area and the third layer area each comprising at least two rows of positioning pins, the second layer area comprising at least one row of positioning pins, each row of positioning pins in the first layer area, the second layer area, and the third layer area comprising at least four positioning pins uniformly distributed in a circumferential direction of the cylindrical clamp, the stent for use in the intestinal tract comprising a head segment, a main body and a tail segment connected in sequence, the weaving method comprising:
- a weaving process of the head segment comprising:
- bending and moving a first wire in a first V-shape between two adjacent rows of positioning pins in the first layer area until all the positioning pins in the first layer area are fully wound around or half of the positioning pins in the first layer area are wound around;
- and allowing a second wire to wind around the remaining positioning pins in the first layer area in a case that half of the positioning pins in the first layer area are wound around by the first wire;
- a weaving process of the main body comprising:
- bending and moving the first wire in a second V-shape between every two adjacent rows of positioning pins in an area from the last row of positioning pins in the first layer area, the second layer area, to the first row of the positioning pins in the third layer area, until all the positioning pins in the area from the last row of positioning pins in the first layer area, the second layer area, to the first row of the positioning pins in the third layer area are fully wound around;
- and
- a weaving processing of the tail segment comprising:
- with the same movement mode as the first wire in the weaving process of the head segment, allowing the first wire to wind around all or half of the positioning pins in the third layer area;
- and in the case that half of the positioning pins in the third layer area are wound around by the first wire, allowing the second wire to wind around the remaining positioning pins in the third layer area;
- wherein, when the first wire or the second wire completes the weaving of adjacent A-th row of positioning pins and B-th row of positioning pins, and the first wire or the second wire returns onto the A-th row of positioning pins, the first wire or the second wire winds around a weaved path between the A-th row of positioning pins and the B-th row of positioning pins, and is moved to the B-th row of positioning pins to form a reinforcing rib, and then starts to move between adjacent B-th row of positioning pins and C-th row of positioning pins;
- and
- wherein when there exists two opposite V-shapes at the same positioning pin, first wires or second wires of the two opposite V-shapes are interlocked with each other.
Dependencies are inferred from the claim text.