A kind of balloon guide catheter and preparation method thereof

Abstract

The invention discloses a balloon guiding catheter and a preparation method thereof. The balloon guiding catheter is sequentially provided with a Y-shaped joint, a diffusion stress tube, an outer tube, an inner tube, a liquid hole and a ball from the proximal end to the distal end. bag. The outer tube and the inner tube are composed of three layers; the balloon guiding catheter contains at least two balloons arranged in a row, and the inner diameter of the balloon at the distal end of the catheter is small; the catheter connected to the distal end of the inner tube The end is made of biomedical materials that can promote blood vessel regeneration. The balloon guiding catheter provided by the patent of the present invention can be used as a guiding catheter to guide other interventional instruments into the lesion position during interventional therapy, and temporarily occlude the distal end of the blood vessel through the expanded balloon to block blood flow and reduce The catheter can be withdrawn smoothly from the body in time due to the balloon contraction time; at the same time, because the middle layer of the extra tube of the present invention is a foam structure, and the density of the foam is getting smaller and smaller from the proximal end to the distal end, it can strengthen the catheter Tracking and passage of complex tortuous blood vessels, while reducing the time for patients to undergo thrombectomy, and improving the operability and efficiency of interventional surgery.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a balloon guiding catheter and a preparation method thereof. Background technique [0002] Interventional technology for cerebrovascular diseases is a representative minimally invasive treatment method. In recent years, with the advancement of imaging equipment, the introduction of new interventional devices has developed rapidly. Brain interventional doctors have been able to deal with more and more complex procedures. There are more and more cases of clinical application, and the types of diseases involved are becoming more and more extensive. At present, the number of cases of interventional treatment of single coronary heart disease in the United States alone has reached 900,000 cases. [0003] One of the conventional treatment methods for cerebral neurovascular - intravenous thrombolytic therapy for ischemic stroke has the disadvantages of short treatment time windo...

AI Technical Summary

Problems solved by technology

However, the balloon guiding catheters currently on the market are all single-balloon guiding catheters. During interventional treatment, the balloon needs to be expanded as much as possible so that the balloon can be tightly attached to the vessel wall, which will increase the risk of damage to the blood vessel. The stimulation of brain nerves and blood vessels will greatly increase various complications of interventional surgery, and at the same time, the high filling pressure of the balloon will also increase the risk of balloon rupture

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