Locking anchoring device and transcatheter locking anchoring system

Abstract

The invention provides a locking anchoring device and a transcatheter locking anchoring system. The locking anchoring device comprises an adjusting assembly, a releasing assembly and an anchor, wherein the adjusting assembly comprises a catheter and a stop seat arranged at the far end of the catheter in a protruding mode, the stop seat is provided with a thread inlet groove for a suture to pass through, the anchor is contained at the far end of the stop seat, the far end of the anchor extends out of the stop seat, and the releasing assembly penetrates through the catheter and the stop seat and is detachably connected with the anchor. In the heart intervention process, the anchor can be contracted into the catheter, and the conveying difficulty and the damage to human tissue are reduced; and the depth of the anchor penetrating into the myocardium is limited through the stop seat, and the damage to the tissue is reduced while the anchoring force is guaranteed.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a lock-knot anchor device and a transcatheter lock-knot anchor system. Background technique [0002] The heart consists of four chambers, the left atrium, the left ventricle, the right atrium, and the right ventricle. There are valves (atrioventricular valves) between the atrium and the ventricle. These valves allow blood to flow from the atrium to the ventricle, but not back. When the human heart valve causes blood to flow back due to various pathological reasons, it is called "mitral valve regurgitation" or "tricuspid valve regurgitation". For heart valve diseases such as mitral valve regurgitation or tricuspid regurgitation, drug therapy or surgical operation are usually used for treatment. Drug therapy is difficult to effectively eradicate the disease, but surgical treatment requires invasive thoracotomy and full-scale surgery. Anesthesia and moderate hypot...

AI Technical Summary

Problems solved by technology

However, since the connection between the helical anchor and the myocardium is reversible, after implantation, the helical anchor may naturally reverse and rotate out of the myocardium during the long-term beating of the heart. There is a risk of the anchor falling off, causing irreversible damage to the postoperative patient; In addition, the outer diameter of the helical anchor determines its contact area with the myocardium. The larger the contact area, the greater the anchoring force. Therefore, in order to enhance the anchoring force, usually only the outer diameter of the anchor can be increased, and the outer diameter of the anchor can only be increased. If the diameter increases, the outer diameter of the overall conveying system will increase, which will increase the difficulty of conveying and increase the damage to the human body.

In addition, because the puncture depth cannot be limited when the anchor punctures into the myocardium, if the puncture depth is insufficient, the anchor implanted into the myocardium is not deep enough, the anchoring force is insufficient, and there is a risk of falling off; Thinning of the wall, risk of the anchor tip penetrating the myocardium, causing injury to the patient

That is, the current lock-knot anchoring device has a large volume, is difficult to operate, and causes great harm to the human body.

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