Microcatheter moulding stent used for intracranial aneurysm embolization and preparation method of microcatheter moulding stent

Abstract

The invention relates to a microcatheter moulding stent used for the intracranial aneurysm embolization and a preparation method of the microcatheter moulding stent. The microcatheter moulding stent comprises a first bending part and a second bending part, wherein the first bending part is connected with the second bending part, the length of the first bending part is 3-5 mm, the length of the second bending part is 5-15 mm, the diameter of the stent is 1-1.5 mm, the length of the stent is 30-50 mm, and the first bending part and the second bending part are used for closely fitting the intracranial vascular bending and arterial aneurysm positions. According to the microcatheter moulding stent and the preparation method, the bending degree of the stent closely fits the intracranial vascular bending and arterial aneurysm shapes, so that the accurate moulding of the microcatheter is guided, therefore, the accurate placement of the microcatheter in the surgery is facilitated, and further, the operative problems including the difficulty in placement of the microcatheter, the separation of the microcatheter, the floating of a spring ring, and the like caused by poor moulding of the microcatheter in the embolism process are avoided.

Description

technical field [0001] The invention relates to a microcatheter for intracranial aneurysm embolization, in particular to a microcatheter shaping support based on 3D printing. Background technique [0002] Cerebral hemorrhage caused by intracranial aneurysm has the characteristics of acute onset, rapid disease progression, high morbidity and mortality. The secondary bleeding rate is high in the short term, so early treatment is particularly important. The treatment of intracranial aneurysms by interventional vascular access has developed rapidly in modern neurosurgery. However, interventional surgery has extremely high requirements for the precise positioning of intraoperative catheters. Differences in the experience of the operator during the operation and the anatomical differences in the development of the individual blood vessels of the patient can all lead to the difficulty in placing the microcatheter in place or the instability of the microcatheter in the key step of...

AI Technical Summary

Problems solved by technology

At present, auxiliary positioning systems such as intraoperative CT positioning, computer-aided navigation, and surgical robot assistance are common surgical positioning systems in clinical practice. Among them, intraoperative CT positioning is relatively popular in most hospitals, and the equipment is cheap, but the intraoperative operation is not flexible, and There is ray radiation; although the computer-aided navigation is accurate in positioning and can provide real-time image support during the operation, it is expensive and needs to be installed with a positioning device; the surgical robot is the latest intraoperative positioning method, which overcomes hand shaking and accurate positioning, but the price is extremely high. Expensive, difficult to popularize

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