Split iliac vein stent and placement method thereof

Abstract

The invention discloses a split-type iliac vein stent and a placement method thereof.The split-type iliac vein stent comprises a lesion vein far-end section and a lesion vein near-end section which are located in a lesion vein and connected with each other and a lesion vein opposite-side section located in another iliac total vein, a connecting part is arranged at one end of the lesion vein far-end section, a first developing point is arranged on the connecting part, and a second developing point is arranged at the other end of the lesion vein near-end section; the lesion vein far-end section is connected with one end of the lesion vein opposite-side section through the connecting part, the lesion vein opposite-side section and the lesion vein far-end section form an inverted V shape at the convergence position of the two iliac total veins, and the lesion vein and the opposite side of the lesion vein are connected in a separated mode, so that the lesion vein and the opposite side of the lesion vein can be connected in the blood flowing direction. The stent is split at the intersection of the left and right iliac general veins to form a V-shaped structure, so that the stent is matched with the special form of the convergence position of the left and right iliac general veins to avoid displacement, the stent cannot enter the inferior vena cava, and the mode is convenient for medical staff to position and place and easy to operate.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a split iliac vein stent and a placement method thereof. Background technique [0002] At present, in order to restore the patency of the iliac veins, the treatment of iliac vein compression syndrome mainly adopts endovascular interventional surgery, which is mainly to perform stent implantation or balloon dilation at the location of iliac vein lesions, which is simple, minimally invasive, and remote. The patency rate is high during the stent implantation operation; the stent is usually a hollow or braided tubular structure, which can be used for the recanalization of pathologically changed hollow organs. The stent in the compressed state can be introduced into the position to be treated through the delivery catheter, and certain measures can be taken to expand it, so as to achieve the supporting effect. Although there are many types of vascular stents on the market, the...

AI Technical Summary

Problems solved by technology

The former can be accurately positioned and placed in the common iliac vein, but lacks flexibility, cannot cross the hip joint, and cannot adhere well to the wall

The latter is prone to shortening and poor support

The main problems faced by the existing stents are: (1) during the surgical implantation of the stent, the placement position of the stent is difficult to determine, the release process of the stent is more complicated, and the operation is difficult; (2) to ensure complete coverage of common iliac vein lesions, the stent It needs to be partially released into the inferior vena cava, which will change the original blood flow direction, shape of the blood flow cavity and blood flow field. Lead to the formation of thrombus; ③ Postoperative stents may have displacement problems

However, the placement method of the Y-shaped stent is much more complicated than the existing stents, and the clinical operation is difficult, and the main stent of the inferior vena cava section will increase the burden on the vein wall, which is easy to cause damage to the vein wall, and may even cause in-stent failure. Waiting for new questions

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