ENDOVASCULAR PROSTHESIS AND DEVICE FOR DELIVERY Russian patent published in 2017 - IPC A61F2/86 A61F2/89 A61F2/92 

FIELD: medicine.

SUBSTANCE: endovascular prosthesis comprises the first expandable member capable of expanding from the first unexpanded state to the second extended state in which it is pressed against the vascular lumen and a retractable sheet member attached to the first expandable member and comprising one longitudinal member connected to the first expandable member, and a plurality of ribs attached to the longitudinal member and comprising a pair of rows of ribs connected to the opposite sides of one longitudinal element. Neighboring in the longitudinal direction, pairs of ribs do not have connecting spacers. On the plane: (i) each rib comprises a proximal rib portion, a distal rib portion and an intermediate rib portion interposed therebetween, and (ii) the distal portion of each rib points towards the first expandable member. According to the second embodiment of the endovascular prosthesis in the plane: (iii) the ratio of the perpendicular distance from the longitudinal axis to the distal end of the rib and 50% of the circumference of the first expandable member in the second expanded state is from about 1:2.5 to about 1:1.5 in the plane. According to the third embodiment of the endovascular prosthesis on the plane: (iii) each rib comprises at least two sub-segments, each of which forms a different angle with the longitudinal axis of the endovascular prosthesis. These prostheses can be removed by a doctor after full or partial deployment.

EFFECT: possibility to change the prostheses position for optimal placement.

66 cl, 43 dwg