Support device and support system

Abstract

The invention relates to a stent device and a stent system.The stent device comprises a stent and a control mechanism, the control mechanism comprises a control guide wire and a traction part arranged on the control guide wire, and the control guide wire is arranged in the axial direction of the stent and movably arranged on the inner wall of the stent; a window is formed in the support, a connecting part and a limiting part are further arranged on the support, and the connecting part is arranged on the side, provided with the window, of the support and used for being connected with the traction part; the limiting part is used for limiting the position of the control guide wire in the circumferential direction and the radial direction of the stent; when the stent is in an expansion state, the control guide wire applies pulling force to the connecting part through the traction part so that the stent wall around the window can be sunken towards an inner cavity of the stent and can be separated from the blood vessel wall, and it is avoided that when the window and a branch stent are not aligned, branch blood vessels are blocked, and then branch blood vessel ischemia is caused.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a bracket device and a bracket system. Background technique [0002] The fenestration technique of covered stents is generally used in the treatment of diseases involving bifurcated vessels, which has the advantages of isolating diseased vessels and maintaining the blood flow of bifurcated vessels. However, there are individual differences in the shape of blood vessels in patients. Therefore, when the pre-fenestrated stent-graft is delivered to the lesion for release, it is easy to have inaccurate alignment between the window and the bifurcated blood vessel. If the wall sticks together, the bifurcated blood vessels will be blocked, causing ischemia of the bifurcated blood vessels, leading to severe cerebral infarction, upper limb ischemia and other complications. Moreover, a branch stent is generally provided at the window. If the alignment between the window and the bif...

AI Technical Summary

Problems solved by technology

However, there are individual differences in the shape of blood vessels in patients. Therefore, when the pre-fenestrated stent-graft is delivered to the lesion for release, it is easy to have inaccurate alignment between the window and the bifurcated blood vessel. If the wall is attached, it will cause blockage of bifurcated vessels, cause ischemia of bifurcated vessels, and lead to serious complications such as cerebral infarction and upper limb ischemia

Not only that, but a branch stent is generally installed at the window. If the alignment between the window and the bifurcated blood vessel is not accurate, it will also make it difficult to establish the guide wire passage of the branch stent, or even fail to establish the guide wire passage of the branch stent.

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