Dual balloon hemangiectasis catheter

Abstract

The invention provides a dual balloon hemangiectasis catheter for treating vessel blockage, comprising a wire guide tube and a catheter body which are coaxially connected and a balloon connected on a far end part of the catheter body. The catheter body is formed by a wire guide cavity, a first filling cavity and a second filling cavity, and tube walls of the cavities are connected and fixed with one another; the balloon part is designed by adopting an inner layer and an outer layer of the balloon in two specifications which are coaxially sleeved by taking the wire guide tube as a central axis; the layers of the balloon are centralized in sequence from the inside to the outside, and two balloon cavities are respectively communicated with the first filling cavity and the second filling cavity; and the wire guide tube is positioned on the position inside the inner balloon and on the central axis of the two balloons, and is communicated with the wire guide cavity of the catheter body. The catheter can well solves problems caused by an improper single balloon specification or a broken single balloon in a surgery, and overcomes the defect that in the conventional dual balloon catheter, either the balloon part comprises a pressurizing tube to cause oversized cross section area after the balloon is folded, or three cavities of the catheter part are in a free state to cause inconvenient operation.

Description

technical field [0001] The invention relates to a device in the technical field of medical instruments, in particular to a double-balloon vasodilator catheter for treating blood vessel blockage. Background technique [0002] Endovascular interventional therapy has played a strong role in the treatment of cardiovascular and cerebrovascular diseases because of its advantages of less bleeding, less trauma, fewer complications, safety and reliability, and quick postoperative recovery, which greatly reduces the pain suffered by patients and reduces the It reduces the operation difficulty of the operator, significantly shortens the operation time and hospitalization time, and significantly reduces the cost. [0003] The vasodilation balloon catheter is a medical device used in the field of vascular interventional therapy to treat blood vessel blockage. After observing the lesion by angiography of the lesion, the operator selects a balloon of an appropriate size and a stent of the...

AI Technical Summary

Problems solved by technology

[0004] Currently, the vasodilator balloon catheters used clinically are generally single-balloon catheters. Although it is easier to enter the blood vessel, the size of the blood vessel in the lesion can only be determined by angiography of the lesion and the experience of the operator. The diameter of the balloon is selected before the operation, and the structure of some diffuse long lesions is complex and difficult to observe. Therefore, during the operation, the size of the balloon selected before the operation is often inappropriate and cannot expand the entire vascular embolism, which affects the operation. results, and may even require reoperation after balloon catheter replacement

At the same time, during the operation, when the single-balloon catheter is inserted into the lesion along the guide wire, the general operator will use a balloon pressurizer to pressurize and expand the balloon. If it ruptures, the only way at present is to withdraw the entire balloon catheter and replace it with a new balloon to perform the operation again. This will definitely prolong the operation time and may cause vascular damage, which will increase the pain and risk of the operation for the patient.

[0005] Although there are also double-balloon catheters at present, the disadvantage is that either the pressurizing tube of the catheter body extends to the distal end of the double-balloon to inflate and pressurize the double-balloon, which must increase the transverse diameter of the entire delivery device. cross-sectional area, which is not conducive to the delivery in human blood vessels or can not be inserted into smaller blood vessels at all; They are mutually fixed and supported, and are completely independent. For the catheter of a vascular interventional device with a length of about 140-150cm, the three-layer sleeves are in a free state from each other, which is not easy to manipulate, which will definitely reduce the feasibility of the operation and increase the operation time. the risk of

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