Integrated releasing controlling device for spring ring and bare stent

Abstract

The invention discloses an integrated releasing controlling device for a spring ring and a bare stent. The integrated releasing controlling device comprises the spring ring and the bare stent, whereinone end of the spring ring is anchored on the outer surface of the bare stent; the integrated releasing controlling device also comprises a plurality of flexible binding pieces, a first guide wire and a second guide wire, the binding pieces are bent to be in a C shape and used for transversely binding the bare stent on the periphery at intervals, and the two ends of all the binding pieces are sequentially strung through the first guide wire; the second guide wire penetrates through the spring ring in the axial direction of the spring ring and is bound through a fine line. According to the integrated releasing controlling device for the spring ring and the bare stent, it can be effectively avoided that the spring ring and the bare stent are wound in a conveying pin and the positioning releasing process, positioning releasing can be controlled in a multistage mode, and the accuracy is improved; the released spring ring can be wound and shrunk on the periphery of an anchoring area, gapsare accurately blocked off, and the blocking effect of the spring ring is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an integrated spring coil bare support release control device. Background technique [0002] At present, the clinical treatment of Stanford type B aortic dissection usually adopts the method of endovascular minimally invasive. However, since the closure of the dissection breach in the abdominal aortic branch region will affect the blood supply to important organs, the stent graft cannot be used to isolate the breach, and there is a particularity in the treatment. For the treatment of this part, hybrid surgery, fenestration technology, branching technology, multi-layer bare stent technology, etc. are mostly used at present, but there are still various defects, for example, the trauma caused by hybrid surgery is relatively large and the complication rate is high. Fenestration and branching techniques usually require custom-made brackets, which are expensive, lo...

AI Technical Summary

Problems solved by technology

[0004] Therefore, in view of the technical problems that the coils in the existing aortic dissection rip occluder are easy to wrap around the bare stent, cannot be accurately positioned around the breach and are loose in shape, the purpose of the present invention is to provide a device that can effectively avoid the coils and the bare stent. The stent is wound, and the spring coil can hover around the gap after release, which can greatly improve the sealing effect of the integrated spring coil bare stent release control device

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