Single-guide wire cutting balloon catheter

Abstract

The invention discloses a single-guide wire cutting balloon catheter. The single-guide wire cutting balloon catheter is characterized by comprising a Luer joint, a pipe body, a balloon, a tip and a cutting guide wire, wherein a connecting pipe is arranged at a near end of the balloon; a limiting catheter is arranged on the outer wall of the connecting pipe; one end of the cutting guide wire is fixed on the far end outer wall of the balloon, and the other end thereof is stretched in the limiting catheter; the cutting guide wire slides back and forth in the limiting catheter along with the expansion and shrinkage of the balloon to reduce pressure of the cutting guide wire to the balloon when the balloon is expanded. According to the single-guide wire cutting balloon catheter disclosed by the invention, the cutting guide wire fixed method in the conventional single-guide wire cutting balloon is changed, the conventional two-end fixation is changed into one-end fixation, while the other end is movably connected, so that the cutting guide wire can stretch out and draw back freely in the balloon axial direction, and the banana-shaped deformation effect of the balloon can be avoided; in the meantime, the single cutting guide wire can cut the lesion plaque into monolete suture, and then the plaque can be faded away through follow-up pharmaceutical action; the surgery is safe and reliable, and high in success rate without complication.

Description

technical field [0001] The invention relates to interventional medical equipment, in particular to a single guide wire cutting balloon catheter. Background technique [0002] Interventional treatment is an emerging treatment method between surgery and medical treatment, including endovascular intervention and non-vascular intervention. To put it simply, interventional therapy is to make tiny channels with a diameter of a few millimeters on the blood vessels and skin without exposing the lesion by surgery, or through the original pipeline of the human body, in the imaging equipment such as angiography machine, fluoroscopy machine, CT, MR, etc. Under the guidance of B-ultrasound, it is a minimally invasive treatment method for treating the lesion locally. [0003] Currently, the cutting balloon catheters used in interventional operations mainly have two structures. One is a cutting balloon, whose structural feature is that multiple cutting pieces are adhered to the surface o...

AI Technical Summary

Problems solved by technology

The disadvantage of this cutting balloon catheter is that the guide wire needs to pass through the outer surface of the balloon, and the contact length between the guide wire and the balloon catheter is greatly reduced, which greatly reduces the ability of the balloon catheter to track along the guide wire, resulting in a greatly reduced passability of the catheter lesion. It is not suitable to enter severe occlusive lesions; since the guide wire is completely fixed on the distal and proximal ends of the balloon, the balloon is prone to banana-shaped deformation during balloon expansion, resulting in uneven force on the lesion; Cutting the unit, prone to dislodgement of the lesion plaque, causing surgical complications leading to risk and possibly life-threatening

[0004] Therefore, there is a need for a balloon cutting catheter to overcome the problems that the traditional cutting balloon has a large external size, is not easy to pass through severe occlusion lesions, and multiple stress points tear lesion plaques to cause risks.

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