Artificial chordae tendineae and artificial chordae tendineae implanting system

Abstract

The invention discloses artificial chordae tendineae and an artificial chordae tendineae implanting system. The artificial chordae tendineae comprises a flexible chordae tendineae main body, wherein the first end and / or the second end of the chordae tendineae main body are / is connected with a fixing element; and a puncture connecting element is arranged at one side, backing to the chordae tendineae main body, of the fixing element. The artificial chordae tendineae implanting system comprises a clamping device, a puncture device and a pushing device, wherein the pushing device comprises a pushing guide pipe; the puncture device and the clamping device are arranged in different inner cavities of the pushing guide pipe in a penetrating way; the clamping device comprises a clamping push rod, afar end clamp head and a near end clamp head; the near end clamp head is arranged at the far end of the pushing guide pipe; the far end clamp head is arranged at the far end of the clamping push rod;the artificial chordae tendineae is accommodated in the clamping device; the fixing element of the artificial chordae tendineae corresponds to a puncture needle head; the puncture device comprises the puncture needle head and a puncture push rod; the puncture push rod is connected with the near end of the puncture needle head; and the far end of the puncture needle head is a cone-shaped straightsharp end. The artificial chordae tendineae and the puncture needle head form stable connection; the puncture point is small; the injury on valve leaflets is reduced; and the operation time is reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a device for repairing heart valve defects, in particular to an artificial chord and its artificial chord implantation system. Background technique [0002] The mitral valve is a one-way "valve" between the left atrium (abbreviation: LA) and the left ventricle (abbreviation: LV), which can ensure blood flow from the left atrium to the left ventricle. See figure 1 , A normal healthy mitral valve has multiple chordae (referred to as: CT). The leaflets of the mitral valve are divided into anterior leaflet and posterior leaflet. When the left ventricle is in a diastolic state, the two are in an open state, and blood flows from the left atrium to the left ventricle; when the left ventricle is in a systolic state, the chordae are stretched to ensure The valve leaflets will not be rushed to the atrium side by the blood flow, and the front and rear leaflets are well closed, there...

AI Technical Summary

Problems solved by technology

[0005] a) The puncture point formed by the needle with a hook-shaped tip on the valve leaflet is too large, causing greater damage to the valve leaflet, which not only affects the recovery process of the patient after surgery, but also increases the risk of the valve leaflet being torn after surgery;

[0006] b) The contact between the implanted artificial chordae and the leaflet is only a single force point, and the long-term pulling of the artificial chordae on the leaflet may easily cause the leaflet to tear;

[0007] c) The probability of the needle hooking the artificial chord is relatively low, resulting in a low success rate of the operation and prolonging the operation time;

[0008] d) After the needle hooks the artificial chord, since the needle and the artificial chord are only connected by weak friction force, during the process of withdrawing the needle, the artificial tendon will be damaged due to the patient's blood flow or the operator's action. The cable is easy to fall off from the needle, causing the operation to fail and prolonging the operation time

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