A liquid-filled cage ball type aortic valve stent system

Abstract

The invention provides a liquid injection type cage ball aortic valve support system and belongs to the technical field of medical instruments. The liquid injection type cage ball aortic valve support system comprises a support body and a liquid injection ball. The system is delivered to the position of the aortic valve of a patient through a catheter after passing through the artery or the cardiac apex of the human body, so that the lesion aortic valve is substituted, and the system controls the blood to flow from the left ventricle to the artery blood vessel in one direction. The support body is divided into four sections which are the valve ring anchoring section, the ball cage section, the transitional section and the aorta anchoring section in sequence. The liquid injection ball moves in the ball cage section of the support body in a reciprocating mode, so that the function of blood one-way flow control is achieved. The liquid injection type cage ball aortic valve support system has the advantages that the system can be implanted into the human body through the catheter and circumferential leakage can be reduced in the valve closing process; the liquid injection ball is adopted in a valve support so that the function of blood one-way flow control can be achieved and the center backflow phenomenon generated when valve leaflets are folded can be eliminated; the force receiving state of the liquid injection ball is better than that of a triple lobe type valve and the service life can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of medical devices, more specifically to the field of interventional therapy devices, in particular to a liquid-filled ball cage type aortic valve stent system. Background technique [0002] In patients with aortic stenosis, if advanced age with severe comorbidities (European Heart Surgery Risk Assessment score greater than 20), secondary surgery with coronary artery bypass graft graft patency and other risk factors, and Patients with calcified aorta are at great risk for conventional aortic valve replacement surgery. The current treatment for the above patients is transfemoral, left axillary or apical catheter aortic valve stent implantation. [0003] The existing aortic valve stent implantation is to install a biological valve on a self-expanding or balloon-expanded stent, and deliver it to the position of the patient's aortic valve through a catheter through the human artery or through the apex of the he...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the existing aortic valve stent system inserted into the heart, there is circumferential leakage between the valve stent and the three-leaflet biological valve, the center of the three-leaflet biological valve has problems of regurgitation and short service life, and to reduce the interventional band The stent system of the tri-leaf bioprosthetic valve has the risk of the leaflets obstructing the blood flow of the coronary arteries. The present invention provides a liquid-filled cage-type aortic valve stent system

Images