PLASTIC ENDOPROSTHESIS FOR STENTING PANCREATIC DUCTS Russian patent published in 2017 - IPC A61L27/14 A61F2/82 

FIELD: medicine.

SUBSTANCE: stent for stenting the pancreatic ducts is formed from a thermoplastic polymer material in the form of curved, with lateral retainers, tubular pieces with an outer diameter from 1.0 to 4.0 mm And a length of 30 to 180 mm, Equipped with apertures for the collection and carrying out of pancreatic secret when the stent is inserted into the pancreas. The stent is made of polyether block amide having the following structural formula: , where: "n" (degree of polymerization) is 1500 to 3000 units, the block PA corresponds to the polyamide-nylon 12, and the PE block corresponds to the polyester-poly tetramethylene oxide. The content of polyester blocks based on poly tetramethylene oxide is 36.96±0.02 mol %, and the content of polyamide blocks based on nylon 12 is 60.47±0.04 mol %.

EFFECT: invention ensures the functioning of stents during their stay in the body for a long time without blocking the internal lumens of the stent.

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