A blood flow restrictor for interventional surgery of congenital heart disease

Abstract

The invention provides a blood flow limiter for a congenital heart disease interventional operation. The blood flow limiter comprises a flow limiting structural body and a flow limiting rotating piece. The flow limiting structural body comprises a flow limiting fixed piece and a tubular support frame. A through hole is formed in the flow limiting fixed piece. The flow limiting fixed piece is fixedly connected to one end of the tubular support frame. The size of the flow limiting fixed piece is not smaller than the size of the end face, to which the flow limiting fixed piece is connected, of the tubular support frame. The flow limiting rotating piece is rotatably connected to an end face of the flow limiting fixed piece in such a manner of rotating in one way. The flow limiting rotating piece is rotated to adjust the size of a blood flow passage formed by the flow limiting rotating piece in match with the through hole in the flow limiting fixed piece, thus realizing adjustment of blood flow. The area of the blood through hole can be adjusted from 0 to the maximum area of the through hole in the flow limiting fixed piece, so that the blood flow of pulmonary artery can be adjusted according to actual situations after the operation; and therefore, the optimal treatment effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a blood flow restrictor for interventional surgery of congenital heart disease. Background technique [0002] Banding operation is a kind of palliative operation method for complex congenital heart disease, large ventricular septal defect and many other heart diseases with left-to-right shunt. At present, when performing Banding surgery, the traditional operation is to tether the pulmonary artery after opening the pulse to reduce the diameter and blood flow. However, after this operation is adopted, since the diameter of the pulmonary artery behind the tether is fixed, the size of the blood flow cannot be adjusted according to the postoperative situation, resulting in failure to achieve the best therapeutic effect. Contents of the invention [0003] In view of the above-mentioned defects and problems of the prior art, the object of the present invention is to provide a...

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Problems solved by technology

However, after this operation, since the diameter of the pulmonary artery after the tether is fixed, the size of the blood flow cannot be adjusted according to the postoperative situation, resulting in the inability to achieve the best therapeutic effect.

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