Multifunctional coronary artery guide catheter of transradial artery path

Abstract

The invention provides a multifunctional coronary artery guide catheter of a transradial artery path. The multifunctional coronary artery guide catheter of the transradial artery path comprises a torsion controller, an anti-folding protector, a push rod, a composite tube and a nested catheter; a push steel wire and a first annular steel ring and a second annular steel ring at two ends play a mechanical transmission role; when in use, under the mechanical transmission action of the push steel wire, the nested catheter can freely go in and out of the guide catheter; the longer the nested catheter is inserted into coronary artery, the higher the support force obtained by the guide catheter is; therefore, the support force of the guide catheter is actively increased; the whole body is simple and convenient to operate, safe and reliable; the support force can be increased step by step; and thus, the safety of a surgery is increased.

Description

technical field [0001] The invention belongs to the field of medical equipment, and relates to a multifunctional coronary artery guiding catheter via a radial artery route. Background technique [0002] Complex coronary artery lesions include multi-vessel, diffuse, tortuous, calcified, or chronic total occlusion (CTO) lesions, etc., which are difficult points in percutaneous coronary intervention (PCI). Insufficient support and difficulty in reaching the target lesion are the most common reasons for surgical failure. Therefore, a guiding catheter that can provide super-strong support is the primary guarantee for successful interventional treatment of complex coronary artery lesions. [0003] After 2005, with the maturity of coronary intervention technology and the improvement of equipment, transradial coronary intervention (TRI) technology has gradually become popular. Clinical practice shows that the radial artery route has the advantages of less puncture injury, fewer va...

AI Technical Summary

Problems solved by technology

[0006] At present, the most commonly used technologies and methods to enhance the support force of guiding catheters are: double guide wire technology, balloon anchoring technology, child-mother catheter technology, and Guidezilla extension catheter technology, etc. Both are complex, and at the same time inevitably increase the risk of complications such as myocardial ischemia, guide wire entanglement, device damage, coronary artery injury, dissection or even perforation, cardiac tamponade, aortic dissection and even sudden cardiac death

[0007] Although the Guidezilla extension catheter technology is easy to operate, it has obvious defects: ① relying on a single push rod to push and guide the catheter segment into the diffuse, tortuous, and travertine coronary artery is obviously insufficient, and it is difficult to advance; ② the push rod is easy to twist or break; ③ When the delivery device enters the guiding catheter segment, complications such as discounted or even damage to the guide wire, balloon damage, tilting of the stent steel beam, longitudinal compression or unloading are likely to occur; ④ obstruction of coronary blood flow inevitably increases myocardial infarction risk of complications such as hemorrhage, malignant arrhythmia (ventricular tachycardia, ventricular fibrillation, third-degree atrioventricular block), and even sudden death; grinding operation etc.

[0009] ①The support force cannot be adjusted, and even gradually decreases with the prolongation of the operation time;

[0011] ③Coronary blood flow is inevitably obstructed when using the 5in 6 technique (parent-child catheter technique) or the Guidezilla extension catheter technique, especially when dealing with left main coronary artery bifurcation lesions, there is a huge risk

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