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Covered stent post-release device and covered stent implantation system

A covered stent and post-release technology, which is applied in the field of medical devices, can solve the problems of low surgical success rate, high surgical difficulty, and scratched blood vessels, and achieve the effects of improving surgical efficiency, simple overall structure, and reducing scratch damage

Pending Publication Date: 2020-10-09
BEIJING PERCUTEK THERAPEUTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a stent-graft post-release device and a stent-graft implantation system, so as to relieve the stent-graft post-release device in the prior art from easily scratching blood vessels in narrow and curved vascular channels, Cause blood vessel damage or even rupture, a little carelessness will cause fatal injury to the patient, and when the proximal end of the stent graft is released through the existing stent graft rear release device, the proximal end of the stent graft will be released and bounced outward at the same time. Open, this release process will also cause great damage to blood vessels, thus leading to technical problems such as high difficulty in surgery and low success rate of surgery

Method used

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  • Covered stent post-release device and covered stent implantation system
  • Covered stent post-release device and covered stent implantation system
  • Covered stent post-release device and covered stent implantation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This embodiment provides a post-release device for a covered stent, refer to Figure 1 to Figure 3 , the stent-graft posterior release device includes a guide seat 100, a pull wire seat 200, a first pull wire 300, a second pull wire 400 and a locking structure.

[0064] Wherein: the first pull wire 300 and the second pull wire 400 are both made of flexible materials; the direction extending from the proximal end of the guide base 100 toward the distal end of the guide base 100 is the axial direction of the guide base 100, and the direction of the self-pull wire base 200 The direction in which the proximal end extends to the distal end of the pull wire seat 200 is the axial direction of the pull wire seat 200 . A second installation through hole 201 , which penetrates through the pull wire seat 200 along the axial direction of the pull wire seat 200 , is disposed thereon.

[0065] The first pull wire 300 is coiled around the outer peripheral surface of the guide base 10...

Embodiment 2

[0086] This embodiment provides a stent graft implantation system, refer to Figure 10 , Figure 11 , combined with Figure 1 to Figure 9 as well as Figure 12 , Figure 13 , the stent-graft implantation system includes an operating handle, a guide wire tube 710, an inner tube 720, an outer tube 730, and the stent-graft post-release device provided in any optional implementation in Example 1; wherein: the guide wire tube 710 Through the inner tube 720, and the guide wire tube 710 passes through the second installation through hole 201, the proximal end of the guide wire tube 710 is fixed inside the first installation through hole 101; Distal end: the distal end of the outer tube 730 and the inner tube 720 are both connected to an operating handle, and the operating handle is configured to drive the outer tube 730 and the inner tube 720 to move forward and backward.

[0087] Since the stent-graft implantation system provided in this embodiment includes the stent-graft post-...

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Abstract

The invention provides a covered stent post-release device and a covered stent implantation system, and relates to the technical field of medical instruments, the covered stent post-release device comprises a guide seat, a pull wire seat, a locking structure, and a first pull wire and a plurality of second pull wires which are made of flexible materials; the first stay wire is wound on the outer or inner circumferential surface of the guide seat, one end of the first stay wire is fixedly connected to the pull wire seat, and the other end is fixed to the guide seat through the locking structure; one end of each second pull wire is fixedly connected to the guide seat, and the free end of each second pull wire is fixed between the first pull wire and the guide seat; and under the condition that the pull wire seat moves away from the guide seat, the first pull wire can be separated from the guide seat, so that the free ends of the plurality of second pull wires are released. According to the invention, the technical problems of high operation difficulty and low operation success rate caused by the fact that the blood vessel is easily scratched, the blood vessel is damaged and even broken by the existing post-covered stent release device and the blood vessel is greatly damaged because all parts of the near-end part of the covered stent are simultaneously released and bounced off outwards when the near end of the covered stent is released are solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a stent-graft post-release device and a stent-graft implantation system. Background technique [0002] Aortic disease includes aortic dissection, aortic aneurysm, etc., mainly caused by hypertension, arteriosclerosis, injury, infection, etc. It is a cardiovascular disease that seriously threatens human health, and patients face a great threat to their lives; The traditional surgical method for arterial disease is to introduce extracorporeal circulation, perform open surgery, and perform artificial blood vessel replacement on the damaged part, but the open surgery takes a long time, has large surgical trauma, and has a high mortality rate; in recent years, minimally invasive interventional methods have become popular Treat patients, that is, release the covered stent to the position of the patient's vascular disease through a unique delivery system, repair the aortic disse...

Claims

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Application Information

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IPC IPC(8): A61F2/95A61F2/954
CPCA61F2/954A61F2002/9505
Inventor 郑殿会刘颖
Owner BEIJING PERCUTEK THERAPEUTICS CO LTD
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