Artificial chordae tendineae fixing assembly capable of being adjusted several times and intervention method thereof

Abstract

Disclosed is an artificial chordae tendineae fixing assembly capable of being adjusted several times and an intervention method thereof. The fixing assembly comprises an occluder and an adjusting rodwhich are both of hollow structures for the artificial chordae tendineae to penetrate through, the occluder is used for being clamping in the interventricular septum and provided with a switch adjusting device which controls the movement and fixation of the artificial chordae tendineae, the adjusting rod is connected with the occluder, and the switch adjusting device on the occluder can be adjusted several times. The assembly can not only rivet the artificial chordae tendineae on the interventricular septum but also solve the problem that the length of the artificial chordae tendineae is not suitable for most of the patients after operations due to cardiac changes; the assembly can be reserved at a puncturing point of the artificial chordae tendineae on the skin for a short time, the length of the artificial chordae tendineae can be adjusted again according to the cardiac changes of the patients in the early postoperative period, and the function of repeatedly adjusting the artificialchordae tendineae is achieved.

Description

technical field [0001] The invention belongs to the field of biomedical devices, and in particular relates to a multi-adjustable artificial chord fixation component and an intervention method thereof. Background technique [0002] Mitral regurgitation is one of the most common valvular lesions today, the main causes are mitral annulus dilatation, chordal insufficiency, mitral valve mucus degeneration, valve leaflet prolapse, rheumatic heart valve disease, ischemic lesions Wait. Direct mitral valvuloplasty and artificial valve replacement are the most effective methods for the treatment of mitral valve insufficiency, but because the operation requires extracorporeal circulation technical support, the trauma to the human body is relatively large, and there are many complications for elderly patients. disease patients, there are quite high morbidity and mortality. [0003] Therefore, in recent years, medical personnel and scientific researchers from various countries have exp...

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Problems solved by technology

Direct mitral valvuloplasty and artificial valve replacement are the most effective methods for the treatment of mitral valve insufficiency, but because the operation requires extracorporeal circulation technical support, the trauma to the human body is relatively large, and there are many complications for elderly patients. patients with a relatively high rate of morbidity and mortality

MitraClip sends an implantable clip to the vicinity of the mitral valve through atrial septal puncture, and clamps and fixes the free edge of the front and rear valve leaflets, so that the valve leaflets fit well at the end of systole and reduce regurgitation, but this type of device cannot Implantation of chordae is a non-physiological repair

[0004] Implanting artificial chordae on the valve leaflet is a repair method close to the physiological state. Usually, the surgery is performed through the apex, which involves large trauma and high risk. If it can be treated percutaneously, it can bring a safer minimally invasive effect, but the percutaneous approach How to fix the artificial chord is an urgent problem to be solved

In addition, once the artificial chord is fixed, the length of the artificial chord cannot be adjusted again. The length of the artificial chord needs to be adjusted accordingly after the patient’s heart changes with factors such as volume and out of anesthesia. Otherwise, abnormal heart valve function will occur and the operation will fail.

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