Transcatheter heart annuloplasty system

Abstract

The invention belongs to the technical field of medical instruments and particularly relates to the technical field of interventional instruments in third-class medical instruments, in particular to a transcatheter heart annuloplasty system. The transcatheter heart annuloplasty system comprises a forming ring assembly, wherein the forming ring assembly comprises a macromolecular braided tube, an anchor nail, a contraction line and a bidirectional contraction device; a delivery assembly, wherein the delivery assembly is used for conveying the forming ring assembly to a target position; and a continuous anchoring assembly, wherein the continuous anchoring assembly is used for fixing the forming ring assembly to the target position. Through the bidirectional contraction device based on a compression spring, a friction disc and a wire spool, bidirectional contraction of a forming ring fixed to a valve is achieved, the strength and size of contraction of the valve are accurately adjusted, locking can be achieved at any time, a doctor is allowed to adjust the contraction degree of the valve according to different conditions of different patients, and the doctor is allowed to make adjustment in an opposite direction, so that the size change of the valve during continuous opening and closing is adapted, thus, the success rate of an operation is guaranteed, and secondary operation correction is avoided.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to the technical field of interventional devices in the third category of medical devices, and in particular to a transcatheter heart valve annuloplasty system. Background technique [0002] Minimally invasive interventional medical technology is an efficient diagnosis and treatment method that has gradually emerged in recent years. It has outstanding advantages such as small trauma, easy operation, accurate intervention site, and few complications. It has become one of the most important diagnostic and treatment methods for cardiovascular diseases and tumor diseases. . In interventional medical operations, professional doctors usually need to manually operate specific devices to enable one or more slender flexible catheters with different shapes or functions to pass through the patient's complex and changeable cardiovascular and other human body cavity environment, and guid...

AI Technical Summary

Problems solved by technology

Mitral regurgitation (MR) in mitral valve disease has a very serious impact on patients. Under normal circumstances, the mitral valve in the human heart acts as a hemostatic valve, preventing oxygen-rich blood from the lungs from returning to the left atrium. In the middle, once the mitral valve is improperly closed or misplaced, MR will occur, which will significantly reduce the pumping efficiency of the heart and even cause heart failure

[0004] The current annuloplasty devices have the following problems: (1) The take-up device used can only tighten the annulus in one direction. Once it is over-contracted, it can only rely on the self-tension of the annulus to provide a reverse force to drive the contraction shaft. To achieve the purpose of adjusting the degree of shrinkage; (2) The screw needs to be delivered individually, and the delivery device can only deliver one screw at a time. After screwing in, it needs to be withdrawn and loaded with the next screw before continuing to deliver and screw in, which increases the operation time

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