67 results about "Cardiac apex" patented technology

A ventricular assist device includes a pump such as an axial flow pump, an outflow cannula connected to the outlet of the pump, and an anchor element. The anchor element is physically connected to the pump, as by an elongate element. The pump is implanted within the left ventricle with the outflow cannula projecting through the aortic valve but desirably terminating short of the aortic arch. The anchor element is fixed to the wall of the heart near the apex of the heart so that the anchor element holds the pump and outflow cannula in position.

Apparatus, systems, and methods are provided for repairing heart valves through percutaneous transcatheter delivery and fixation of annuloplasty rings to heart valves via a trans-apical approach to accessing the heart. A guiding sheath may be introduced into a ventricle of the heart through an access site at an apex of the heart. A distal end of the guiding sheath can be positioned retrograde through the target valve. An annuloplasty ring arranged in a compressed delivery geometry is advanced through the guiding sheath and into a distal portion of the guiding sheath positioned within the atrium of the heart. The distal end of the guiding sheath is retracted, thereby exposing the annuloplasty ring. The annuloplasty ring may be expanded from the delivery geometry to an operable geometry. Anchors on the annuloplasty ring may be deployed to press into and engage tissue of the annulus of the target valve.

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.

The invention discloses a left ventricle auxiliary blood pump, which comprises a cardiac apex sleevelet and a blood pump body fixedly connected with the cardiac apex sleevelet, wherein the cardiac apex sleevelet comprises a suture ring and a flexible skirt edge which is sleeved at the periphery of the suture ring; the suture ring comprises a suture ring inner hole and a convex edge which is convexly arranged in the radial direction; the blood pump body comprises an inlet pipe; the inlet pipe is convexly arranged on a rear cover of the blood pump body; a peripheral ring slot is formed between the convex edge and the flexible skirt edge; a sliding sheet which can only move in the radial direction relative to the blood pump body is arranged on the rear cover of the blood pump body and is stretched into the peripheral ring slot in a movable way; the convex edge is positioned between the sliding sheet and the bottom surface of a settling tank; and the cardiac apex sleevelet and the blood pump body are relatively axially fixed. In the invention, the sliding sheet is used for fixing the cardiac apex sleevelet and the blood pump, so that the cardiac apex sleevelet can be more conveniently and reliably connected with the blood pump; simultaneously, the axial dimension of the inlet pipe of the blood pump is reduced, so that the implantation of the left ventricle auxiliary blood pump in a pleural cavity is facilitated without damages to a diaphragm, and the success rate of a surgery is greatly improved.

The invention discloses a cardiac apex exploration device used in cardiac operations in the technical field of medical equipment. The exploration device comprises two fine steel tubes, a fastener andtwo rotating illumination clamping devices, the middle parts of the outer walls of the two fine steel tubes are hinged together through the fastener, the two rotating illumination clamping devices arein threaded connection with the tops of the two fine steel tubes, and a hollow semicircular holding ring is in threaded connection with the bottom of each fine steel tube; the lower parts of the outer walls of the two thin steel tubes are connected through a telescopic wire in a penetrating mode, and a rechargeable battery is embedded in and clamped to the surface of any one hollow semicircular holding ring. The two fine steel tubes are clamped and loosened by means of the two hollow semicircular holding rings and the fastener, so that a light guide tube drives a rhombic block to conduct clamping; an electric push rod extends, so that light of a laser lamp is emitted out through the light guide tube, the position can be determined conveniently, and repeated exploration is achieved. The device is easy to operate, facilitates clamping, is convenient to fold, reduces the area of an affected part, and has wide market application prospects.