Catheter system for trans-radial cerebro vascular interventional diagnosis and treatment

Abstract

A catheter system for trans-radial cerebro vascular interventional diagnosis and treatment comprises an internal catheter and an external catheter. The internal catheter and the external catheter are coaxially used and in close fit with each other. The internal catheter is of a pigtail structure, wherein one end of the internal catheter is a handle end I, and a head end I away from the handle end I is of a free bending structure; one end of the external catheter is a handle end II, a head end II away from the handle end II is a flexible hose, and the included angle between the head end II and the vertical direction is within the range of 20 degrees to 40 degrees. The catheter system is composed of the internal and external dual-catheter, the internal catheter is used for super-selective vascular openings, and the external catheter follows up. The two catheters are coaxial, and are mutually matched for use; the head of the external catheter is soft, and the rear part of the external catheter is straight, so that it is convenient for the external catheter to follow up the super-selective secondary branch blood vessels; after the success of the super-selective operation, the internal catheter can play the role in stabilizing the system and enhancing the system support, thus facilitating follow-up of the external catheter; and due to the adoption of the coaxial structure, the condition that the external catheter cuts vascular wall to damage blood vessels at the blood vessel turning portion can be avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a catheter system for cerebrovascular intervention through the radial artery. Background technique [0002] Cerebral angiography is the "gold standard" for diagnosing cerebrovascular diseases. Transfemoral artery is the routine approach, and the incidence of complications at the puncture point for interventional therapy via femoral artery puncture is 2% to 10%. Common complications include Puncture site hematoma, subcutaneous or retroperitoneal hemorrhage, pseudoaneurysm, arteriovenous fistula, etc. The position of the radial artery is superficial and the inner diameter is small, so it is easy to locate the arterial breach and compress to stop bleeding after puncture. Femoral artery puncture for neurointerventional patients often requires anticoagulation, antiplatelet and other treatments after interventional therapy, which significantly increases the risk of bleeding at...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing Simon's catheter forming and superselection process is complex, time-consuming and laborious, and it disturbs the aortic arch more, and the follow-up is poor, and it is often difficult to superselect secondary branch vessels. To solve the above problems , providing a catheter system for cerebrovascular intervention through the radial artery

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