Vascular stent construction method based on modularization

Abstract

The invention discloses a vascular stent construction method based on modularization. The method comprises the following steps of S1, carrying out statistics on vascular stent data, taking vascular stents as modules, and building a stent module database; S2, obtaining lesion blood vessel data, and partitioning the lesion blood vessel; S3, selecting the stent module matched with each partition fromthe stent module database according to the size and lesion condition of each partition of the lesion blood vessel; S4, adjusting models of the stent modules according to the connection conditions ofthe partitions, and determining connection positions and splicing modes of the stent modules of the partitions; and S5, combining the stent modules of the partitions according to the connection positions and the splicing modes of the stent modules of the partitions to complete the construction of a vascular stent. The stent is flexibly adjusted to be combined with high freedom degree and high matching degree, the treatment efficiency is improved, a lantern ring type connecting structure is adopted, a non-overlapping connecting structure is stable, the breakage risk is relatively low, and the service life of the vascular stent is relatively long.

Description

technical field [0001] The invention relates to a method for constructing a vascular stent, in particular to a method for constructing a vascular stent based on modularization. Background technique [0002] Vascular stenosis can be mainly divided into the following two categories: 1. Congenital vascular abnormalities cause vascular stenosis. For such patients, close observation is required if no symptoms are caused. If clinical symptoms are caused, further vascular CTA or DSA angiography is required to determine whether it needs to be opened or whether it can be opened. 2. Vascular stenosis is caused by acquired diseases. The most common diseases that cause vascular stenosis are arteriosclerosis and occlusion. The causes of arteriosclerosis are mostly three highs, namely high blood pressure, high blood sugar and high blood fat. There are also many external factors, the most important of which is the patient's smoking, because smoking can cause vasospasm, which will cause va...

AI Technical Summary

Problems solved by technology

The former can be accurately positioned and placed on diseased vessels and has excellent support performance. However, for long-segment vascular lesions, the use of long-segment cut stents is easy to form thrombus in the stent, and the flexibility of the cut-stent is not good enough to prevent long-segment stents. The metal braided stent has good flexibility and fits the diseased blood vessel ideally. However, because the length of the braided structure cannot be fixed as the former, it is prone to shortening, resulting in abnormal operation of the stent, and the radial support of the braided stent Poor strength is prone to the problem that the stent cannot fully expand the diseased blood vessel

[0004] Vascular stents are used clinically to treat vascular stenosis with interventional medical devices. The choice of stents by professional medical staff depends on the specific vascular conditions of the patient. For long-term vascular lesions, it is difficult for a single stent to properly correspond and be suitable for treatment. Usually, multiple stents are spliced ​​together or hybrid stents with different structures and different performances are used for combined treatment. The current splicing method is to use laser welding to weld the overlapping sections of the two stents. The solder joints are irregular and the structure of the overlapping sections of the two brackets is not uniform, making it difficult to ensure the quality of the welding process and establish a unified quality standard. The brazing method is difficult and has the probability of irregular burrs. Increased chance of small blood clots during overall stent use

At present, due to the production specifications and costs of medical devices, the production and development companies and manufacturers can launch very limited stents of the same type and different specifications. Professional medical staff have a limited range of options when choosing stents corresponding to patients' blood vessels. Select a relatively suitable model for treatment, but there may still be certain inappropriateness or insufficient matching with blood vessels, and the selection process also prolongs the total time required for the treatment process

Images