BIOLOGICAL VASCULAR PROSTHESIS OF BIFURCATION TYPE AND METHOD OF ITS MANUFACTURE Russian patent published in 2018 - IPC A61F2/06 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medical technology and can be used in cardiovascular surgery to repair damaged areas of blood vessels. Based on the results of a previously performed ultrasound or magnetic resonance imaging study of the anatomy of the patient's vascular bed, the prosthesis 1 is cut in the form of two rectangles 2 and 3 with an allowance of 1.8 to 2.2 mm, connected with each other by short sides. Width of the rectangle 2 is equal to the circumference of tubular base 4. Width of second rectangle 3 is equal to half the length of the circumference of tubular base 4. Then tubular base 4 is formed by sewing the longitudinal edges of first rectangle 2 with double wrapped surgical suture 5. Second rectangle 3 is folded to the surface of formed tubular base 4 to which transverse edge 6 of second rectangle 3 is sewn across the longitudinal axis. Longitudinal edges 7 and 8 of second rectangle 3 are sutured together from the suture of transverse edge 6 to the bend of second rectangle 3 to first indices A and B previously marked on its longitudinal edges 7 and 8 by circles, which can be made in form of blue circles or blue dots with adjacent letters A and B. Next, cut the tubular brushes 13 and 14, performing it in the form of elongated rectangles 11 and 12 with allowance of 0.8–1.2 mm. Lateral edges of elongated rectangles 11 and 12 are sutured together by double coiled surgical sutures 15 and formed tubular branches 13 and 14 are sewn to holes formed by oblique arcuate sections 16 and 17. Oblique arcuate sections 16 and 17 are made, respectively, for the diameters of tubular branches 13 and 14, from first indices 9 and 10 to second indices 18 and 19, previously marked on inflection line of second rectangle 3. Second indices 18 and 19 can be made in the form of black circles or black dots with adjacent letters C and D. Sewing of the formed tubular branches 13 and 14 is performed with offset of sutures 15 connecting lateral edges of tubular branches 13 and 14 with respect to seams of tubular base 4.

EFFECT: group of inventions allows to reduce time of operative intervention by using a bifurcation-type biological vascular prosthesis, completely ready for implantation, ensure restoration of the functions of the replaced section of the patient's vascular bed due to the close elastic-strength properties of the biological tissue, as well as the physiological flow of blood.

11 cl, 1 tbl, 3 ex, 8 dwg