| 摘要 |
The present invention relates to technical field of cardiac medical instruments, and more particularly to a balloon dilatation catheter provided with soft coating tip. In the balloon dilatation catheter provided with soft coating tip of the present invention, the balloon dilatation catheter comprises a balloon, and an inner catheter. A distal end of the balloon at a terminal end of the inner catheter extends outward to form a catheter tip with taper inner cavity. A tip coating layer made of a material which is softer than a material of the balloon is coated on the catheter tip. The material of the balloon generally selects a relatively hard material. The distal end of the balloon extends outward to form a catheter tip. The material forming the inner cavity is harder, so that the inner layer of the tip with greater hardness together with the inner hydrophilic coating layer can effectively reduce the occurrence of the dead lock toward the guide wire, so as to ensure the unhindered operation of a surgery and reduce the occurrence of medical accidents. When in a operation with a tip coating layer made of a material which is softer than a material of the balloon is coated on the catheter tip, the injury to the blood vessel when the tip is having contact with the blood vessel is minimized so that a further injury to the cardiovascular system of the patient is prevented. |
