Atrial septal stoma device

Abstract

The invention provides an atrial septal stoma device. The atrial septal stoma device comprises an elastic supporting frame, a handle and at least one diameter adjusting line. The waist part of the elastic supporting frame is provided with an electrode for ablating target tissues, and the waist part of the elastic supporting frame is also provided with a plurality of threading holes along the circumferential direction. The diameter adjusting lines are wound among the threading holes and are connected with the handle, the handle pulls the diameter adjusting lines so as to change the diameter of the waist part, and one diameter adjusting line penetrates through at least three threading holes. According to the atrial septal stoma device, the number of the diameter adjusting lines is reduced, the winding mode of the diameter adjusting lines on the elastic supporting frame is simplified, and the smoothness of pulling the diameter adjusting lines is improved. And after the number of the diameter adjusting lines is reduced, mutual influence is weak in the size condition process, the elastic supporting frame is stressed more uniformly, and it can be guaranteed that the shape of a flow dividing channel is regular.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a percutaneously inserted atrial septostomy device. Background technique [0002] Atrial septostomy (also known as interatrial shunt) is an effective percutaneous intervention in the treatment of heart failure patients. Patients with heart failure usually present with elevated left atrial pressure, which can lead to pulmonary congestion, seriously affecting the quality of life of the patient. Establish a shunt channel in the atrium through atrial septostomy, so that the capacity of the right heart system can be compensated to relieve the pressure load of the left heart system (especially the left atrium), which can directly improve the patient's hemodynamic status and reduce the pressure of the left atrium. Mean pressure and pulmonary capillary wedge pressure have high clinical significance in improving the symptoms and prognosis of heart failure patients. [0003] Howe...

AI Technical Summary

Problems solved by technology

At the same time, the setting of multiple diameter-adjusting wires also increases the complexity of winding wires, which may easily cause the uneven tension of the elastic support caused by the mutual influence of multiple diameter-adjusting wires, resulting in the offset of the axis of the elastic support frame and the diameter adjustment. The shape is asymmetrical, and the elastic stent is difficult to accurately contact the blood vessel wall to form adverse phenomena such as treatment.

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