SEGMENTATION-TYPE ESOPHAGEAL STENT AND WEAVING METHOD THEREFOR

WIPO Patent Application WO/2020/047878

A1

A segmentation-type esophageal stent and a weaving method therefor. The esophageal stent is a cylindrical mesh stent that is formed by weaving a monofilament and has two ends in the shape of a bell mouth; the mesh stent consists of an upper bell mouth segment and a lower bell mouth segment; the upper bell mouth segment and the lower bell mouth segment are connected by means of several locking structures. Compared with an existing hook-type lock, a cruciform locking structure can enhance the supporting force of a whole esophageal stent and have good rigidity; the two ends of the esophageal stent both are in the shape of the bell mouth; by means of the design of the bell mouth, after the esophageal stent is inserted into an esophagus, the bell mouth in an upper part facilitates the pass of food, and the bell mouth in a lower part can prevent the stent from displacing and have a good function of fixing the stent, so that the stent is accurately fixed and positioned; the weaving process of the whole stent is completed by means one filament, so that the rigidity of the esophageal stent is improved, the axial compressional deformation of the esophageal stent can also be reduced, and the normal use of the esophageal stent is ensured.

ZHENG ZHONGWEI (CN)
YAN HANG (CN)

PCT/CN2018/104739

March 12, 2020

September 09, 2018

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SHANGHAI ELITEK BIOSCIENCES CO LTD (CN)

A61F2/90; A61F2/06; A61M29/04

CN104936557A	2015-09-23
CN204562475U	2015-08-19
EP1795151A1	2007-06-13
US20120089224A1	2012-04-12
CN107126306A	2017-09-05
CN2280525Y	1998-05-06
CN1321520A	2001-11-14

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