Volume reduction device for left ventricle

Abstract

The invention discloses a left ventricle volume reduction device which comprises a tie bar, an inner anchor capable of being recycled or conveyed in a folded mode, a left ventricle and a right ventricle. The inner anchor can be hinged to the far end of the tie bar. The outer anchor is arranged at the near end of the tie bar in a penetrating mode, the outer anchor is provided with a locking structure, the locking structure is provided with a locking piece, the locking piece is provided with a tooth-shaped face, and the outer anchor abuts against the tie bar through the tooth-shaped face of the locking piece. The barb is arranged on the inner anchor, so that when an operation fails or the inner anchor needs to be taken out subsequently, the snare is hung on the barb on the inner anchor, and then the inner anchor is taken out of the body from the conveying sheathing canal. And the locking structure with the tooth-shaped surface is arranged on the outer anchor, and the holding power of the outer anchor and the tie bar is improved through the tooth-shaped surface, so that the risk that the outer anchor falls off in the body is improved. The locking structure is further structurally improved, so that the risk that the outer anchor slides off from the tie bar is further reduced, and the outer anchor is taken back by unlocking the locking structure.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a left ventricular volume reduction device. Background technique [0002] During a heart attack, the delivery of blood, oxygen and nutrients is blocked. This causes the heart tissue to slowly die, and parts of the beating muscle are replaced by inert scar tissue. After a heart attack, the heart enlarges for a short period to keep blood flowing and keep a person alive, but over time scar tissue begins to weigh on the heart and weaken the heart muscle. Common interventions such as coronary stenting and drug therapy do not solve this problem. The Left Ventricular Volume Reduction Device is a transcatheter ventricular augmentation system that can be used to address scar tissue in patients with ischemic cardiomyopathy after myocardial infarction. It embeds a series of anchors into the wall of the ventricle and stitches up excess scar tissue to help the heart reg...

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