Scaffold system, conveying device thereof, rear release structure and scaffold

Abstract

The invention provides a scaffold system, a conveying device thereof, a rear release structure and a scaffold. The near end of the scaffold is provided with one or more near end connecting parts, andeach near end connecting part is provided with one of corresponding through holes; the rear release structure comprises a rear release control piece, one or more far end connecting parts and one or more rear release constraint pieces; each far end connecting part is provided with the other corresponding through hole and arranged at one end of the corresponding rear release constraint piece; and when the other ends of the rear release constraint pieces are connected with a conveyor and one ends of the rear release constraint pieces penetrate through the through holes of the near end connectingparts, one end of the rear release control piece penetrates through the through holes of the far end connecting parts to be connected with the conveyor, then when the other end of the rear release control piece is pulled, one end of the rear release control piece is pulled out from the conveyor and the far end connecting parts, and then constraint of the rear release constraint pieces can be released. Thus, the near end of the scaffold and the conveyor are separably connected, and then when the scaffold is released, even if the near end of the scaffold is impacted by a high-speed blood flow, the near end of the scaffold is not turned over.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a stent system and its delivery device, a post-release structure and a stent. Background technique [0002] The use of covered stents in the treatment of aortic diseases is a major advance in aortic surgery, and its indications include aortic dissection, aortic true aneurysm, aortic pseudoaneurysm, and aortic penetrating ulcer. This technique greatly reduces surgical mortality and postoperative complications, reduces surgical trauma, and patients recover faster. The mechanism of this treatment is that the covered stent is delivered to the lesion site through a special conveyor and then opened to isolate the tumor from the blood, eliminating the risk of death caused by aneurysm rupture and massive bleeding, or the damage of the tumor to surrounding tissues and organs. oppression. [0003] Among them, the precise positioning and release of the covered stent is the key to ...

AI Technical Summary

Problems solved by technology

Folding of the proximal end of the stent will easily lead to poor adherence of the proximal end of the stent, poor lesion isolation effect, and increased stimulation of the apex of the stent to the vessel wall, causing serious clinical consequences

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