Balloon dilatation catheter, bent balloon and manufacturing method thereof, and bent balloon forming mold

Abstract

The invention provides a balloon dilation catheter, a bent balloon and a manufacturing method thereof, and a bent balloon forming mold, wherein the bent balloon is applied to the balloon dilation catheter, and the bent balloon comprises a cylindrical bent balloon main body; and a plurality of radial groove lines are formed in the outer surface of the bent balloon main body. By virtue of the groove lines in the outer surface of the bent balloon, one side of the bent balloon, in pressurizing and pressure maintaining processes, can be correspondingly tightened when the opposite side extends under external force, so that the bent balloon is represented as an arc-shaped structure, and the bent balloon, when not controlled by an operator, can automatically bend in accordance with the bending radian and direction of a blood vessel in a lesion part. An ankylosing blood vessel phenomenon can be effectively prevented when an intravascular stent is conveyed, and the stent can be implanted into the targeted lesion blood vessel in accordance with the bending radian of the blood vessel, so that a better adherent effect is guaranteed and the vascular injury caused by the stent is relieved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a balloon dilatation catheter, a curved balloon and a manufacturing method thereof, and a molding die of the curved balloon. Background technique [0002] Endovascular interventional therapy is a minimally invasive treatment method under the guidance of imaging equipment by opening tiny channels on the skin and blood vessels without exposing the lesion. After more than 30 years of continuous development, balloon dilatation catheters are mainly used in percutaneous transluminal angioplasty, vascular stents, and thrombolytic therapy. Balloon dilatation catheters should be used together with a guide wire that has been passed into the lesion in the body in advance. When the balloon catheter is pushed along the path of the guide wire to the lesion, it needs to have a good ability to pass through curved blood vessels and complex diseased blood vessels, which requires that the distal end...

AI Technical Summary

Problems solved by technology

During the time when the balloon maintains pressure, the target lesion blood vessel is often easily damaged by changing its original shape under the action of external force, which brings hidden dangers to the success rate of the operation and postoperative recovery.

Images