Delivery system for left atrial appendage closure device

Abstract

The invention belongs to the technical field of left atrial appendage occlusion devices, in particular to a delivery system of a left atrial appendage occlusion device, comprising a delivery sheath tube, a dilator, and a regulating tube arranged on the outer surface of the delivery sheath tube. The outer surface of the regulating tube is integrally formed with Adjustment seat, the outer surface of the adjustment seat is provided with several limit grooves, the inner wall of the limit groove is integrally formed with a connecting block, the adjustment pipe is fixedly connected with a trapezoidal limit block through the connecting block, and the outer surface of the adjustment pipe is screwed with a fixed The outer surface of the fixing ring is provided with anti-skid stripes. At the same time, several trapezoidal limit blocks are elastically connected to the inner wall of the limit groove inside the adjustment tube through several connecting blocks, and are screwed on the outer surface of the adjustment tube. The fixing ring enables the fixing ring to be screwed together on the outer surface of the adjusting tube, so that the fixing ring can tightly squeeze and fix the delivery sheath inside the adjusting tube by squeezing the trapezoidal limit block, so that the fixing ring and the trapezoidal limiting block can be tightly squeezed and fixed. The bit block facilitates securing the delivery sheath.

Description

technical field [0001] The invention belongs to the technical field of left atrial appendage blocking devices, and in particular relates to a delivery system of the left atrial appendage blocking device. Background technique [0002] Left atrial appendage closure refers to preventing the formation of thrombus in the left atrial appendage during atrial fibrillation by blocking the left atrial appendage, thereby reducing the risk of long-term disability or death caused by thromboembolism in patients with atrial fibrillation. At the same time, the left atrial appendage closure is minimally invasive The treatment plan can eliminate the dependence of patients on long-term oral anticoagulant therapy and provide patients with a new treatment option. The left atrial appendage closure was developed by Boston Scientific and was approved for marketing in Europe in 2006. On December 31, 2013, it was officially obtained The China State Food and Drug Administration approved the marketing ...

AI Technical Summary

Problems solved by technology

[0003] Left atrial appendage occlusion plays an important role in the modern medical field. The existing Chinese invention patent No. CN206745406U provides a safer and more convenient operation method for left atrial appendage occlusion, but it still exists when it is used. Certain inconvenience, when the adjustment knob is in use, it is difficult to fix the knob, which makes the operation inconvenient, and when the dilator is fixed with the delivery sheath through the expansion joint, there is a situation of unstable fixation

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