| 摘要 |
A balloon dilatation catheter provided with a soft cladding tip relates to the technical field of medical apparatuses for hearts. The balloon dilatation catheter comprises a balloon (1), an inner tube (2), a catheter tip (3) with a conical inner cavity formed by extending the distal end of the balloon (1) from a terminal of the inner tube (2) to an outer end, and a tip cladding layer (4) having a softer material than the balloon and covered on the catheter tip (3). The material of the balloon (1) is generally a rigid material. The distal end of the balloon (1) extends to form the catheter tip (3). The material of the inner cavity is rigid, so the inner layer of the tip having high rigidity and an inner hydrophilic coating can effectively reduce the locking phenomenon of a guide wire, ensure the success of an operation, and reduce the medical accidents. The tip cladding layer (4) having a softer material than the balloon (1) is covered at the outer layer, so during an operation, the damage to a vascular wall caused by the tip is minimized when the tip contacts the vascular wall, thereby not damaging the heart vessel of a patient again. |
