Artificial chordal implantation system with gripping aid

Abstract

The invention discloses an artificial chordae implanting system with a clamping auxiliary device. The artificial chordae implanting system comprises a pushing catheter, a clamping device, a puncturingdevice and the clamping auxiliary device; the clamping device comprising a clamping push rod containing artificial chordae, and further comprises a far-end chuck and a near-end chuck which are used for being matched to clamp a valve leaflet; the puncturing device comprises puncturing push rods and puncturing syringe needles arranged at the far ends of the puncturing push rods; the clamping push rod and the puncturing push rods are movably mounted in the pushing catheter in a penetrating mode, and the puncturing syringe needles are provided with conical far ends and hook-shaped bodies; and theclamping auxiliary device comprises a clamping auxiliary arm movably mounted in the pushing catheter in a penetrating mode, and a clamping auxiliary piece arranged at the far end of the clamping auxiliary arm, and the clamping auxiliary arm pushes the clamping auxiliary piece to stretch out from the far end of the artificial chordae implanting system and then is matched with the clamping device to clamp the valve leaflet. According to the artificial chordae implanting system, the clamping auxiliary piece can be supported on the lower surface of the valve leaflet to assist the clamping devicein stabilizing the pulsating valve leaflet, the clamping stability is improved, and the valve leaflet is prevented from slipping away from the clamping device.

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 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. 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, thereby ensuring that blood flows from the left ven...

AI Technical Summary

Problems solved by technology

However, because the valve leaflet is always in a pulsating state, and the surface of the valve leaflet is smooth tissue, it is difficult for the clamping device to quickly and successfully clamp the valve leaflet. Even if the valve leaflet is clamped, the valve leaflet may fall off from the clamping device. Prolonged operation time and even failed operation

Moreover, after the valve leaflets are captured, if the clamping position is found to be unsatisfactory, the operator needs to fine-tune the clamping device. At this time, the valve leaflets are easily slipped from the clamping device, resulting in prolonged operation time or even surgical failure.

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