Segmented double-membrane flexible stent and manufacturing method thereof

Abstract

The invention relates to the field of accessories for closing a wound or keeping the wound closed in a surgical anastomosis operation, in particular to a segmented double-membrane flexible stent and a manufacturing method thereof. The segmented double-membrane flexible stent comprises net-shaped pipe unit sections (11) and is characterized in that the net-shaped pipe unit sections (11) are sequentially arranged in an end-to-end opposite mode, the adjacent net-shaped pipe unit sections (11) are connected in a hooked mode through fibers (12) to form a net-shaped pipe (10), stent heads (13) are correspondingly arranged at the two ends of the net-shaped pipe (10), and the stent heads (13) and the net-shaped pipe (10) are connected in a hooked mode through the fibers (12) to form a flexible stent (1); and the flexible support (1) is coated with silica gel membranes, and the silica gel membranes attached to the outer side faces of the hooked fibers (12) are mutually folded to form wrinkles. The manufacturing method of the segmented double-membrane flexible stent is characterized by comprising the following steps that I, the silica gel membranes are pasted; and II, sewing is carried out. The segmented double-membrane flexible stent is simple in structure and high in adaptability.

Description

technical field [0001] The invention relates to the field of accessories used in surgical anastomosis for closing wounds or keeping wounds closed, in particular to a segmented double-membrane flexible stent and a manufacturing method thereof. Background technique [0002] In recent years, various metal mesh stents have begun to be used as a support in the intestinal cavity to treat malignant colorectal obstruction, that is, a metal mesh stent is placed at the narrowed part of the intestine to stretch the intestinal tract, so that the narrowed or obstructed part can be reopened. Restoration of patency, the metal mesh stent is suitable for patients with duodenum, small intestine, colon, rectal stenosis and anastomotic stenosis caused by advanced abdominal malignant tumor invasion, compression or other malignant lesions, and can be used as a permanent cure for colorectal cancer malignant obstruction Or temporary treatment, and create conditions for elective surgery. The curren...

AI Technical Summary

Problems solved by technology

The current metal mesh stents are mostly mesh tube stents braided by metal fibers, and a plastic film is pasted on the outside of the metal mesh. The mesh tube has a certain degree of elasticity, but the coefficient of stiffness is relatively large, that is, a certain deformation needs to be applied. Larger external force; while the gaps between various organs in the human body are small, and the contours are often more curved, so it is necessary for the bracket to bend softly and freely to fit the organs, but the current bracket is difficult due to the above reasons. meet this requirement, which limits the application of stents

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