Recyclable plugging device for treating congenital heart disease

Abstract

A recoverable plugging device for treating the congenital heart disease is disclosed in the invention, and comprises a first umbrella-shaped net, a flow blocking pipe and a second umbrella-shaped net which are sequentially connected, a first plugging end is fixed to the middle of the outer side of the first umbrella-shaped net, and a second plugging end is fixed to the middle of the outer side of the second umbrella-shaped net; a connecting rod is arranged in the inner cavity of the first umbrella-shaped net and rotationally connected with the first plugging end, the other end of the connecting rod is detachably connected with a pushing rod, the diameter of the connecting rod is the same as that of the pushing rod, and the tail end of the pushing rod sequentially penetrates through the flow blocking pipe and the second plugging end; the outer side of the pushing rod is sleeved with a connecting tube, and one end of the connecting tube is detachably connected with the second plugging end; and a limiting piece is fixed to the end, away from the second umbrella-shaped net, of the second plugging end, a positioning groove is formed in the end, away from the first plugging end, of the connecting rod, and the limiting piece is matched with the positioning groove. The plugging device is stable in structure, good in locking effect and capable of being prevented from falling off; and the plugging device can be recycled under the condition that a thoracotomy operation is not carried out.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a recoverable occluder for treating congenital heart disease. Background technique [0002] Atrial septal defect is a common congenital heart disease, which means that the atrial septum is abnormal in the process of its occurrence and absorption, and fails to close normally, resulting in a residual communication hole between the left and right atrium. At present, the means of treating atrial septal defect mainly include surgery and interventional therapy. Heart defect occluder is a percutaneous, transcatheter implanted non-surgical medical device for the treatment of congenital heart disease. The device is a self-expanding double-disk structure, and the two discs are connected by a short waist, roughly forming an "工"-shaped structure. After the occluder is sent into the heart defect through the instrument, the heart defect occluder is positioned forward and backward thr...

AI Technical Summary

Problems solved by technology

[0003] However, since the heart defect occluder needs to be placed in the heart defect, when the radial size of the defect occluder is too large, it is difficult to put the heart defect occluder in the heart defect, and if it is too small, the optimal The matching effect

Moreover, due to the unreasonable structure of the existing occluder for interventional therapy of congenital heart disease, its pressure resistance is poor, it is easily deformed, and its occlusion performance is lacking.

Therefore, during interventional treatment, if the above situation occurs, the heart defect occluder needs to be taken out and replaced before treatment, and the existing heart defect occluder is usually taken out through median thoracotomy or lateral thoracotomy. Postoperative pain is severe and recovery is slow, so a retrievable heart defect occluder is urgently needed

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