Implantation device and delivery system for preventing valvular regurgitation

Abstract

The invention relates to an implantation instrument for preventing regurgitation jet and a delivery system thereof, wherein the implantation instrument comprises a distracting mechanism, a core element and a closure assisting element, wherein the distracting mechanism is connected with the core element; the distal end of the closure assisting element is connected with the distracting mechanism; and the closure assisting element is flexible, in a free state, the distracting mechanism is partially or wholly positioned in the atrium of a patient, or the distracting mechanism is fully positioned in the autologous compartment valve ring of the patient. The closure assisting element is partially arranged between the autologous valve leaflets of the patient, and the proximal end of the closure assisting element is provided with a limit element. The distal end of the limit element is connected to the closure assisting element, the proximal end of the limit element is connected to the core element or fixed to the heart tissue of the patient, and the closure assisting element can partially attach to the core element as the autologous valve is closed. At least one end of the core element is fixed to the heart tissue of the patient. The instrument has the advantages of accurate positioning, convenient operation, firm anchoring, less long-term thrombus formation, and less adhesion to the original tissue and is capable of coping with various degrees and positions of pathological changes.

Description

Technical field: [0001] The invention belongs to the field of medical devices, and in particular relates to an implant device for preventing valve regurgitation and a delivery system thereof. Background technique: [0002] Normal mitral valve closing function depends on the complete structure and normal function of the valve leaflets, valve ring, chordae, papillary muscles, and left ventricle. Structural and functional abnormalities in any of these five parts can cause mitral regurgitation. With mild reflux, the patient has only mild exertional dyspnea. Severe reflux (such as papillary muscle rupture) will soon lead to acute left heart failure, and even cardiogenic shock. Mitral regurgitation can be divided into the following two types: 1. Rheumatic heart mitral regurgitation, mainly caused by mitral regurgitation, can cause blood to flow in reverse, so that different blood can mix, causing heart pumping Blood, oxygen delivery function decreased. 2. Non-rheumatic mitral ...

AI Technical Summary

Problems solved by technology

Mitral regurgitation can be divided into the following two types: 1. Rheumatic heart mitral regurgitation, mainly caused by mitral regurgitation, can cause blood to flow in reverse, so that different blood can mix, causing heart pumping blood, decreased oxygen delivery

The main reason is that the mitral valve ring and tricuspid valve ring have special physiological structures, and there is a complex physiological environment below the valve ring, making it very difficult to accurately position and fix the product

In addition, the degree and location of valve prolapse are different. For example, some patients have regurgitation caused by anterior valve prolapse, and some patients have regurgitation caused by combined valve disease. It also interferes with the physiological structure of the remaining normal mitral valve, and the adaptability of the lesion is insufficient

At the same time, the complex blood flow movement makes the implanted device easy to adhere to the autologous tissue, making the implanted device ineffective, or even generating thrombus, which will be life-threatening if it falls

Images