Guiding catheter with shapeable inner core

Abstract

The invention belongs to the field of medical apparatuses and instruments, specifically relates to a medical treatment material for percutaneous coronary intervention, and in particular relates to a guiding catheter with a shapeable inner core. The guiding catheter with the shapeable inner core comprises a hollow catheter body, and the shapeable inner core which is embedded into the catheter body and is coaxially arranged to the catheter body; the inner core comprises a shapeable head end which is arranged at the front end of the inner core in the marching direction, and a pushing rod which is adhered with the shapeable head end; the shapeable head end is equipped with a hollow through cavity through which a guide line passes; a guide line exchange opening is formed in the sidewall of the pushing rod; the shapeable head end is prepared from elastic nitinol material and can be used for in-vivo shaping. With the adoption of the guiding catheter with the shapeable inner core, the problem that the existing general guiding catheter with fixed shaping head end is difficult to reach the pointed coronary opening under the circumstances such as excessively high coronary opening or excessively low coronary opening, which influences the subsequent interventional therapy, can be solved; the shortages that a patient is exposed for an excessively long time due to repeated attempts, and more contrast mediums are used, can be decreased.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a medical consumable for coronary interventional treatment, and more specifically to a guiding catheter with a shapeable inner core. Background technique [0002] Nowadays, in the treatment of coronary heart disease, coronary intervention is a very important part. In the process of coronary intervention, the supporting force of the guiding catheter is one of the key factors affecting the operation. [0003] As a guiding catheter, the main function of the guiding catheter is to provide a channel for subsequent instrument delivery and provide strong support for passage through stenosis. It is required to have a large lumen, smooth inner surface, and low friction coefficient. The strength, hardness and torque control force are required to guide the catheter to connect with the coronary ostium stably; moreover, due to the need to inject contrast media and introduce other interventiona...

AI Technical Summary

Problems solved by technology

[0006] In the face of symptoms of abnormal coronary artery origin such as too high or too low coronary artery ostium, it is difficult for the existing clinical guide catheter to reach the designated coronary artery ostium to complete the follow-up interventional treatment

like figure 1 The symptoms of the high opening of the left coronary artery shown above are difficult to reach the opening of the coronary artery with the plastic guide catheter at the head end, and the follow-up interventional treatment cannot be completed, which seriously affects the clinical treatment effect; The exposure time is too long, the contrast agent is used too much and other disadvantages

Although guiding catheters with various angles have been designed and developed in the prior art to meet the clinical operation requirements of different coronary artery abnormalities, on the one hand, the clinical proportion of abnormal coronary artery symptoms is relatively low, which often leads to many types of The utilization rate of the guide catheter is low. On the other hand, in some emergency situations, the interventional treatment of abnormal diseases will still face the risk of the above-mentioned disadvantages due to the lack of corresponding model guide catheters.

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