Rotary artificial chordae tendineae adjusting system

Abstract

The invention provides a rotary artificial chordae tendineae adjusting system which comprises a wire locking device, and the wire locking device comprises a sheath used for hooking an artificial chordae tendineae and a rotating part rotatably arranged in the sheath; the rotating part rotates in one direction relative to the sheath, and the rotating part winds the artificial chordae tendineae hooked by the sheath to increase the length of the artificial chordae tendineae contained in the sheath. According to the rotary artificial chordae tendineae adjusting system, after the sheath hooks the artificial chordae tendineae, the length of the artificial chordae tendineae in the sheath can be increased by rotating the rotating piece in the sheath to wind the artificial chordae tendineae, so that the effective length of the artificial chordae tendineae is shortened, and the whole system is simple in structure, convenient to operate and high in practicability. The adjusting degree of the artificial chordae tendineae can be visually known through the rotating angle of the rotating piece, quantitative adjustment of the artificial chordae tendineae can be achieved, adjustment and control are achieved through one-way rotation, the wound artificial chordae tendineae can be prevented from loosening again, and the instrument stability is improved; and the chordae tendineae is prevented from being fixed through extrusion, so that the damage to the artificial chordae tendineae is small.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a rotary artificial chord adjustment system. Background technique [0002] Mitral regurgitation is one of the most common valvular diseases today. The main causes of the disease are rheumatic heart disease, mitral valve mucus degeneration, cardiac ischemic disease, cardiomyopathy, etc. Diseases of the valve leaflets, chordae, and papillary muscles prevent the mitral valve from closing completely. [0003] Surgical operations, such as mitral annuloplasty and artificial valve replacement, are effective methods for the treatment of mitral valve insufficiency, but because the operation requires the support of extracorporeal circulation technology, the trauma to the human body is relatively large, and it is not suitable for elderly patients and Patients with more comorbidities have more complications and higher mortality. [0004] Nowadays, minimally invasive interventional ...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, a device for adjusting the length of an artificial chord is disclosed. First, a hook is used to catch the artificial chord, and the chord is stretched by an instrument. The length is determined by the stretching amount, and then the artificial chord is fixed by two positioning clips , to achieve the control effect; the main defects of this technology are: 1. The structure of the control device is complex and the operation is difficult; 2. The clip must be able to provide enough extrusion force to clamp the chord tendon, but too much extrusion force is easy to damage the chord tendon Cause damage; 3. The clip is easy to slip off from the chordae, and the stability is poor; 4. Quantitative control cannot be performed, and the control amount is unstable

These problems will lead to the risk of surgical failure or inability to effectively regulate artificial chordae.

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