Blood vessel dredging and cleaning device

Abstract

The invention discloses a blood vessel dredging and cleaning device. The device comprises a balloon catheter, a balloon and a marking ring, wherein the balloon is wrapped at a distal end of the balloon catheter, a distal end and a proximal end of the balloon are respectively fixedly connected with the balloon catheter passing through the balloon, the marking ring is arranged at the distal end anda proximal end of the balloon catheter, a balloon expansion channel and a guide wire guide channel are arranged in the balloon catheter, a communication hole is formed in a wall of the balloon catheter, an overall shape of the balloon in the inflated state is a truncated cone or a cone, the distal end of the balloon is a large diameter end, and the proximal end is a small diameter end, the balloonis composed of a distal end surface, a proximal end surface, a tapered side wall, and a unit plug-removing protrusion, the distal end face is in arc transition connection with the conical side wall,the proximal end face is in arc transition connection with the conical side wall, the unit thrombus removal protrusions are distributed on the conical side wall of the balloon at intervals, and the unit thrombus removal protrusions are provided with protrusion cavities. The device has advantages of novel structure, good thrombus removal effect, little damage to blood vessel wall and the like.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a blood vessel dredging and cleaning device. Background technique [0002] Various factors can lead to the formation of thrombus in blood vessels, which can cause a series of symptoms and complications. The common treatment for thrombus in blood vessels is surgical treatment, which mostly adopts catheter thrombectomy. The steps of catheter thrombectomy are to cut blood vessels near the body part of the patient's thrombus, insert a thrombus removal catheter and pass along the blood vessel. After passing through the clot site, the thrombus retrieval catheter is equipped with a thrombus retrieval unit for pulling the thrombus, and the thrombus removal device is used to pull out the clot, and after repeated repetitions to confirm that the clot has been cleaned, a balloon is used in the thrombus retrieval catheter. Thrombectomy is a relatively common type of design. [0003]...

AI Technical Summary

Problems solved by technology

[0004] The deficiencies in the existing structure are as follows: First, the balloon is set in an elliptical shape. When the balloon is withdrawn, the friction between the balloon and the blood vessel wall is relatively large, and the damage to the patient's blood vessel wall is large; Spherical, the contact area between the balloon and the vessel wall is small, and part of the broken thrombus can easily flow from the gap between the balloon and the vessel wall to the distal end of the vessel, causing blood vessel blockage again; the second is that the balloon and the vessel wall fit together, and the outer wall of the balloon is smooth Yes, when the thrombus on the vessel wall is relatively hard and sticky, some of the thrombus stuck to the vessel wall may not be removed when the balloon is retracted; when the thrombus is soft, the thrombus is likely to be divided into small thrombi during the thrombus removal process Or thrombus fragments, small thrombus or thrombus fragments are easy to flow to the distal blood vessels, causing secondary embolism, and the blood vessel dredging effect is not good; the third is that the balloon of the prior art cannot completely remove the thrombus at one time, requiring multiple operations, making surgery The operation time becomes longer, which increases the risk of surgery

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