PROCESS OF MAKING BLOOD COMPATIBLE IRREGULAR PRODUCT AND PRODUCT MADE BY SAID PROCESS Russian patent published in 2011 - IPC A61L27/34 A61L31/10 A61F2/24 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine, and can be used for making an implanted prostheses and blood compatible coating for such prostheses. A process of making a blood compatible product (6) involves the following stages: making a mould (7) having a product configuration (6); adjusting a polytetrafluoroethylene membrane to the product configuration (6) by heating of the membrane and attaching it to the mould (7) be exposing to differential pressure generated between two membrane surfaces; cooling of the membrane adjusted in such a way with simultaneously keeping it in a condition of attaching to the mould (7); and removing the adjusted membrane from the mould (7). The membrane is made of a porous polytetrafluorethylene which was not thermostabilised to adjust the membrane to the product configuration (6), and membrane fibres have no preferential orientation, and heating of the membrane when adjusting the membrane to the product configuration (6) is performed at gel point of said porous polytetrafluorethylene. The invention also refers to a cardiac prosthesis in which at least one of its portions comprises a blood compatible coating generated by implementing said process.

EFFECT: group of inventions allows making the blood compatible irregular products made of polytetrafluorethylene.

9 cl, 9 dwg