Bicuspid valve balloon dilatation catheter

Abstract

The invention provides a bicuspid valve balloon dilatation catheter. The bicuspid valve balloon dilatation catheter comprises a saccule, a catheter and a joint, wherein the catheter comprises an outer catheter body and an inner catheter body, the inner catheter body penetrates through the outer catheter body, and the inner catheter body and the outer catheter body are connected with the joint; a cavity of the inner catheter body is communicated with a connector of the joint, a cavity formed by the inner catheter body and the outer catheter body is communicated with a filling connector of the joint, and the far end of the joint is thermally shrunk and contracted through a thermal shrinkage pipe; the two ends of the saccule are conical, the middle of the saccule is concave, the near end of the saccule and the outer catheter body are welded to form a protrusive portion knot, the far end of the saccule and the inner catheter body are welded to form a tip structure, the portion, penetrating through the saccule, of the inner catheter body is provided with four mark rings, the first mark ring is flush with the first bottom face of the saccule, the second mark ring and the third mark ring are flush with the lowest portion of the waist of the saccule, and the fourth mark ring is flush with the second bottom face of the saccule. The bicuspid valve balloon dilatation catheter is simple in manufacturing process and easy to operate, and does not need a special accessory for use in cooperation when used clinically.

Description

technical field [0001] The invention relates to a balloon dilation catheter of a medical device, in particular to a mitral valve balloon dilation catheter. Background technique [0002] The vast majority of mitral valve stenosis is due to repeated episodes of acute rheumatic fever, exudation and hyperplasia of inflammation on the mitral valve, resulting in gradual thickening of the valve leaflets and adhesion between the valve leaflets. Surgery is the main method for the treatment of rheumatic heart valve disease, including closed dissection, direct vision angioplasty and biological valve or artificial valve replacement, and the treatment effect is constantly improving. Inoue in 1984 and Lock in 1985 successively developed percutaneous balloon mitral valve expansion (percutaneous balloon mitral valvuloplasty, PBMV), which gradually replaced the closed dissection. It has been clinically verified for more than 30 years. Its effect is reliable, patients suffer less, and complic...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a mitral valve balloon dilatation catheter, which solves the complicated manufacturing process and operation process when the balloon material adopts a three-layer structure of latex and nylon mesh, and various special accessories are required to be used in conjunction with it in clinical use. , the filling pressure is relatively limited and the risk of balloon bursting is likely to occur; after the inner balloon bursts, the filling fluid flows into the space between the inner and outer balloons, and the retraction fails, causing the balloon to be difficult to pull out of the body.

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