WO2023131311A3 - Thrombectomy stent, thrombectomy apparatus, and thrombectomy system - Google Patents

Abstract

A thrombectomy stent, a thrombectomy apparatus, and a thrombectomy system. The thrombectomy stent (1) comprises a first stent body (11) and a second stent body (12); the second stent body (12) is arranged at the distal end of the first stent body (11); the second stent body (12) comprises a plurality of first pipe diameter segments (121) and a plurality of transition segments (122); the first pipe diameter segments (121) and the transition segments (122) are alternately arranged in the axial direction of the thrombectomy stent (1), and two adjacent first pipe diameter segments (121) are connected by means of a transition segment (122); when the proximal end and distal end of the thrombectomy stent (1) are relatively far away from each other in the axial direction, at least a part of the region of each first pipe diameter segment (121) radially shrinks, and the radial shrinkage regions of two first pipe diameter segments (121) that are adjacent to each other in the axial direction are arranged at an angle. When the thrombectomy stent (1) captures a blood clot in a blood vessel and then is pulled, the thrombectomy stent (1) can maintain its shape in different directions, preventing total collapse of the whole thrombectomy stent (1); and the thrombectomy stent (1) capable of maintaining its shape in different directions can increase the escape resistance of the blood clot, thereby being capable of effectively capturing the blood clots in different directions, and reducing the risk of blood clot escape.