Valve clip resection device

Abstract

The invention discloses a valve clip resection device which comprises an outer tube, a capturing device and a resection device, and the capturing device comprises one or more capturing heads; the outer tube is provided with a recovery cavity, the capturing head is arranged at the far end of the outer tube, the capturing head can stretch out in the direction away from the far end of the outer tube and capture a valve clip, and the capturing head can also be withdrawn in the direction towards the far end of the outer tube and capture the valve clip into the recovery cavity of the outer tube; the distal end portion of the resectoscope is disposed around the interior of the recovery lumen of the outer tube, and the resectoscope is used to resect the valve clip captured in the recovery lumen of the outer tube. The device can be used for separating or removing an implant through a catheter, preparation is made for a patient to receive further valve replacement, and the excision device is simple, reliable and convenient and rapid to operate.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a valve clip resection device. Background technique [0002] The incidence of heart valves is related to age, and with the advent of aging, the incidence increases significantly. Among them, mitral regurgitation (MR) is a common valve disease. Mitral regurgitation is the abnormal flow of blood from the left ventricle into the left atrium when the heart contracts. Severe mitral valve regurgitation can cause symptoms such as palpitations, shortness of breath, and chest tightness in patients, and the annual mortality rate of patients with severe mental failure is as high as 30%. For patients with mitral regurgitation, surgical valve repair or valve replacement is usually done. With the development of transcatheter valve technology, transcatheter mitral clips are also used to improve regurgitation. [0003] The principle of the mitral clip is to mimic the edge-t...

AI Technical Summary

Problems solved by technology

However, there are also obvious defects in this type of mitral clip

After the mitral valve clip is implanted, if it is to be removed, it usually requires a surgical thoracotomy, which brings great risks to the patient

[0004] However, prior art systems for resecting implanted clips close to opposing leaflets in heart valves suffer from the following disadvantages: (a) During the design operation, either using magnetic element engagement or designing the ring at the free end of the cutting element structure, will be affected by leaflets, chordae and blood flow impact, resulting in unsuitable coaptation or coaptation failure; (b) In addition, prior art devices may produce tissue particles during cutting, without considering possible embolism

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