Closed atrial septal dilatation scalpel

Abstract

The invention discloses a closed atrial septal dilatation scalpel. The scalpel comprises a scalpel body and a sheath; the scalpel body comprises a scalpel rod, a scalpel handle and a scalpel tip; the scalpel handle is connected with one end of the scalpel rod, scale lines are arranged on the side face of the scalpel handle, and a blade direction indication line is arranged at the tail end of the scalpel handle; the scalpel rod is provided with an external thread, and the other end of the scalpel rod is connected with the scalpel tip; the sheath is of a hollow tubular structure, an internal thread is arranged on the inner wall of the sheath and matched with the external thread, a ampulla-shaped expansion part is arranged at the front end of the sheath, a scalpel outlet hole is formed in the front end of the ampulla-shaped expansion part, and the scalpel tip can enter and exit from the scalpel outlet hole; and the scalpel body can be contained in the sheath. The sheath is in threaded connection with the scalpel body, and the scalpel outlet depth can be finely adjusted. The operation distance is short, and the situation that the cardio-pulmonary function is hit by a traditional extracorporeal circulation operation and puncture pair injuries are possibly caused by intervention of the operation on blood vessels and surrounding tissue is avoided. The scalpel is suitable for patients of different ages and weights, and sheaths of different types can be replaced according to needs to complete dilatation of atrial septal.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a closed atrial septum expansion scalpel. Background technique [0002] Cardiac atrial septostomy or enlargement can improve the hemodynamics of children by increasing the mixed blood flow of the body and pulmonary veins, reduce left or right atrial pressure, increase blood oxygen saturation, and relieve hypoxia and ischemia in children. It is an important palliative treatment for complex congenital heart disease. At present, it is commonly used for left atrial decompression under extracorporeal membrane oxygenation (ECMO) circulation, left (right) myocardial obstructive disease, left ventricular dysplasia syndrome, complete transposition of the great arteries, complete pulmonary venous drainage, etc. Currently, atrial septostomy or enlarged surgery mainly includes surgical and interventional methods. [0003] Traditional surgical operations require extracorporeal circulation...

AI Technical Summary

Problems solved by technology

[0003] Traditional surgical operations require extracorporeal circulation, which aggravates the cardiopulmonary injury of children, especially for critically ill children, such as patients with congenital heart disease who are assisted by ECMO after surgery. Extracorporeal circulation will seriously affect the cardiopulmonary function of the child, and even lead to the death of the child; Although interventional balloon dilatation can avoid extracorporeal circulation, it often needs to be completed under rad

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