Conveying guide wire and lumen implantation system

Abstract

The invention relates to a conveying guide wire and a lumen implantation system, the lumen implantation system comprises a lumen implant, a guide tube and a conveying guide wire, the conveying guide wire is movably arranged in the guide tube in a penetrating mode, and the lumen implant is connected to the far end of the conveying guide wire in a detachable mode. The conveying guide wire of the invention comprises a hollow tube and a core wire, the hollow tube is arranged at the near end of the core wire in a sleeving mode to keep relatively static with the core wire in the axial direction, andthe elastic modulus of the hollow tube is larger than that of the core wire, thus the near end of the conveying guide wire has good pushing performance, and the far end of the conveying guide wire has better flexibility and superelasticity. In this way, the conveying guide wire can give consideration to both conveying performance and flexibility at the same time, so that operability is better, and an operation effect can be well guaranteed. Meanwhile, the risk that the conveying guide wire is broken in the using process due to a technical difficulty in splicing different materials at the nearend and the far end is effectively avoided, the technical difficulty degree is reduced, and the operation safety is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a delivery guide wire and a lumen implantation system. Background technique [0002] Minimally invasive intervention is a treatment method for vascular aneurysms, usually involving the delivery of vascular implants, such as but not limited to stents, coils, aneurysm occlusion devices, etc., to the lesion site through a delivery system. The delivery system includes a delivery guide wire. The distal end of the delivery guide wire is loaded with a vascular implant, and by pushing the delivery guide wire, the vascular implant can be delivered to the site that needs treatment and then released, so as to achieve the relevant therapeutic effect. . [0003] However, most of the existing delivery guide wires have an integrated structure, which cannot take into account the delivery performance and flexibility of the guide wire, so that the operability of the delivery guide wire is...

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing delivery guidewires have an integrated structure, which cannot better balance the delivery and flexibility of the guidewire, making the operability of the delivery guidewire poor, and the surgical effect cannot be guaranteed

Specifically, either the material of the delivery guide wire is relatively soft, which reduces the delivery performance of the delivery guide wire, so problems such as bending and knotting are prone to occur when pushing in the catheter, so it is difficult to push; or, the material of the delivery guide wire is relatively hard , it reduces the flexibility of the delivery guide wire, so the turning ability is poor when it is pushed in the catheter, it is difficult to reach the lesion position, and it is easy to damage the blood vessel

[0004] In order to make the delivery guide wire have better pushability and flexibility, there are also attempts in the prior art to use materials with different softness at the proximal end and the distal end to directly splice or adjust the outer diameter of the delivery guide wire from the proximal end to the far end. However, the processing difficulty and production cost of these two methods are very high, and the actual effect is not good. There is insufficient connection strength at the splicing part, and the existing technology and equipment cannot process the full-length conveying device or cannot Due to problems such as achieving the ideal outer diameter of the distal end, the distal end of the delivery device still cannot achieve the desired flexibility, and there is even a risk of fracture during use

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