Balloon catheter and manufacturing method thereof

Abstract

The invention discloses a balloon catheter and a manufacturing method thereof and aims to improve pushing capability and permeability of the balloon catheter, lower damage to blood vessels, and increase utilization rate of the balloon catheter. A balloon passes through a far-end outer catheter body and a near-end catheter body to a needle seat to form a pressure cavity. A far end of the balloon is connected with a catheter tip. The far-end outer catheter body is made of nylon or nylon elastomer. The near-end catheter body is made of stainless steel or nickel-titanium memory alloy. An inner catheter is arranged in the pressure cavity. A far end of the inner catheter is connected with the catheter tip. A near end of the inner catheter is a fast switching port for a guide wire. The manufacturing method includes obtaining parts and assembling. Compared with the prior art, by the catheter tip, the far end of the balloon catheter is good in tenacity and in good fit with the guide wire. During treating complex lesion such as curve blood vessels with lesion and chronic fully closed blood vessels with lesion, permeating capability of the balloon catheter through the blood vessels with lesion is high, the blood vessels with lesion can be expanded fully, blood vessel damage which can be caused easily can be reduced, and operation cost is lowered.

Description

Technical field [0001] The invention relates to a medical device and a manufacturing method thereof, in particular to a catheter for expanding various pipelines of human tissues and a manufacturing method thereof. Background technique [0002] Since the first case of transendothelial coronary angiography in 1977, endovascular interventional treatment methods have developed rapidly. Compared with non-chronic complete occlusion lesions, the success rate of surgery for chronic complete occlusion lesions is relatively low. From the 1980s to the mid-1990s, the surgical success rate was only 48-76%. With the continuous improvement of the guide wire structure, the progress of the guide wire control method, the application of intravascular ultrasound IVUS, the continuous accumulation of surgeon experience, and the emergence of small balloons, since the late 1990s, surgery for chronic complete occlusive disease The success rate increased to 65-92%. When the success rate of chronic compl...

AI Technical Summary

Problems solved by technology

The balloon catheter of the prior art is not good in the transmission performance and controllability of the proximal end thrust being transmitted to the distal end during the advancement process for the curved blood vessel at the distal end.

Images