Left auricle plugging device

Abstract

The invention discloses a left auricle plugging device and belongs to the field of medical apparatuses and instruments. The left auricle plugging device is provided with a plugging plate, a plugging umbrella, an elastic column, a plate-column connecting piece and a threaded connecting piece. The surfaces of the plugging umbrella and the plugging plate are covered with permeable polytetrafluoroethylene films. The plugging device is made from nickel-titanium alloy through braiding, bowl-shaped barbs are fixed to the edge of the plugging umbrella, and positioning is easy. Re-positioning of the plugging plate after plugging umbrella release can be achieved by the elastic rod of a spiral structure of the elastic column, and the function of extending and changing the direction of the plugging plate can be achieved, and the requirement relative to a left auricle opening angle of a delivery sheathing canal in operation is reduced. In addition, a thread is arranged on the edge of the plugging plate, the structure can assist the positioning of plugging plate, edge leakage caused by non-attachment between the plugging device and a left auricle wall can be also decreased, and complete plugging of the left auricle can be achieved. The errors caused by subjective judgment of an operator on the plugging device release device are decreased. Furthermore, the left auricle plugging device is suitable for left auricles of different shapes and provides convenience for operating instrument and material selection.

Description

technical field [0001] The invention relates to a retractable and direction-adjustable left atrial appendage occluder, which is used for preventing stroke and other diseases caused by atrial fibrillation, and belongs to the field of medical devices. Background technique [0002] Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia, affecting approximately 2% of the global population. At present, there are about 10 million patients with atrial fibrillation in my country, and the incidence of atrial fibrillation among people over 60 years old is 1%, and it will increase with age. Stroke is one of the main causes of death and paralysis in patients with atrial fibrillation. Its clinical characteristics are sudden onset and serious risks, and the death and disability rate is higher than 50%. 90% of atrial thrombus in non-valvular disease and 60% of atrial thrombus in rheumatic mitral valve disease are formed in the left atrial appendage. The left atrial appe...

AI Technical Summary

Problems solved by technology

Although damage to the distal end of the left atrial appendage can be avoided to a certain extent, the cage-like structure cut out has little tension, and if the structure is too rigid, it will damage the left atrial appendage endothelium

In addition, the occluder lacks an occlusion disk, and instead adopts a cage structure, which leads to the combination of positioning and occlusion functions in the same structure, which cannot adapt to different shapes of left atrial appendages, which greatly increases the difficulty of occlusion

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