67 results about "Cardiac apex" patented technology

A cardiac assist system using a helical arrangement of contractile bands and a helically-twisting cardiac assist device are disclosed. One embodiment discloses a cardiac assist system comprising at least one contractile elastic band helically arrangement around a periphery of a patient's heart, where upon an actuation the band contracts helically, thereby squeezing the heart and assisting the pumping function of the heart. Another embodiment discloses a helically twisting cardiac-apex assist device comprising an open, inverted, substantially conical chamber with two rotatable ring portions of different diameters located at the base and apex of the chamber, with a plurality of substantially helical connecting elements positioned substantially flush with the chamber wall and connecting the two rotatable ring portions, whereby a relative twisting motion of the two rings causes a change in volume of the chamber thereby assisting the cardiac pumping function.

The invention discloses a mitral valve flexible closing plate blocking body implanted through the cardiac apex in the technical field of human heart recovery and an implantation method. A flexible closing plate is implanted through a small incision of the chest of the human left side, enters the left ventricle through the cardiac apex, and is placed and fixed to the position of a regurgitation hole at the front and rear valve leaflet closed position of the mitral valve; when the heart is diastolic, the mitral valve is switched on, and blood passes through two channels between a front valve leaflet, a rear valve leaflet and a closing plate to flow into the left ventricle from the left atrium; when the heart is systolic, the front valve leaflet and the rear valve leaflet are switched off, the edges of the valve leaflets squeeze the closing plate, so that the closing plate deforms slightly, the edges of the valve leaflets and the slightly deformed closing plate are closely combined together, a regurgitation channel of the mitral valve is blocked, and the regurgitation of the mitral valve is effectively avoided. The flexible closing plate blocking body is simple in structure and high in reliability, human trauma caused by the method for implanting the mitral valve flexible closing plate blocking body is small, the remaining regurgitation occurrence rate is very low, the treatment on functional mitral valve insufficiency and the like can be performed, and the success rate of recovering functional mitral valve regurgitation is 90% or above.