39 results about "Left sided heart" patented technology

In one embodiment, the present invention provides a prosthesis that can be implanted within a heart to at least partially block gaps that may be present between the two mitral valve leaflets. In one preferred embodiment, the prosthesis includes an anchoring ring that expands within the left atrium to anchor the prosthesis and a pocket member fixed to the anchoring ring. The pocket member is positioned within the mitral valve, between the leaflets so that an open end of the pocket member is positioned within the left ventricle. When the mitral valve is open, blood flows past the pocket member, maintaining the pocket member in a collapsed state. When the mitral valve closes, the backpressure of the blood pushes into the pocket member, expanding the pocket member to an inflated shape. The mitral valve leaflets contact the expanded pocket member, allowing the prosthesis to block at least a portion of the openings between the leaflets, thereby minimizing regurgitated blood flow into the left atrium.

A cannulation system for cardiac support uses an inner cannula disposed within an outer cannula. The outer cannula includes a fluid inlet for placement within the right atrium of a heart. The inner cannula includes a fluid inlet extending through the fluid inlet of the outer cannula and the atrial septum for placement within at least one of the left atrium and left ventricle of the heart. The cannulation system also employs a pumping assembly coupled to the inner and outer cannulas to withdraw blood from the right atrium for delivery to the pulmonary artery to provide right heart support, or to withdraw blood from at least one of the left atrium and left ventricle for delivery into the aorta to provide left heart support, or both.

A cannulation system for cardiac support uses an inner cannula disposed within an outer cannula. The outer cannula includes a fluid inlet for placement within the right atrium of a heart. The inner cannula includes a fluid inlet extending through the fluid inlet of the outer cannula and the atrial septum for placement within at least one of the left atrium and left ventricle of the heart. The cannulation system also employs a pumping assembly coupled to the inner and outer cannulas to withdraw blood from the right atrium for delivery to the pulmonary artery to provide right heart support, or to withdraw blood from at least one of the left atrium and left ventricle for delivery into the aorta to provide left heart support, or both.

A method for accessing the left atrial appendage with a balloon-tipped transseptal sheath is disclosed. A transseptal sheath is delivered to the left atrium through the intraatrial septum from the right atrium. The balloon tip may be inflated to prevent the transseptal sheath from falling proximally into the right atrium. The inflated balloon tip permits safe probing and exploration of the left atrial appendage and facilitates safe maintenance of the position of the transseptal sheath within the left atrial appendage while delivering an implantable device to the left atrial appendage.

A device for placement within the left atrial appendage of a patient comprising a retention member and a material positioned within the retention member and unattached thereto. The retention member has a first elongated configuration for delivery and a second expanded configuration for placement within the left atrial appendage. The material is configured to float within the retention member. The retention member can have at least one appendage wall engagement member to secure the retention member to the appendage.

The invention discloses a positioning device for closing the left aurcle through epicardium loop ligature under intracardiac assistant positioning. The positioning device comprises a positioning cy linder, wherein one end of the positioning cylinder is closed, the other end of the positioning cylinder is open, a pressurization cavity is formed in the cylinder wall of the positioning cylinder, a pressurization connector communicated with the pressurization cavity is arranged at the closed end of the positioning cylinder, and a pressure regulating valve is arranged on the pressurization connector. According to the positioning device for closing the left aurcle through epicardium loop ligature under intracardiac assistant positioning, through an adsorption hole communicated with a decompression cavity, negative pressure is utilized for fixing the positioning cylinder to the left aurcle of the epicardium, and the left aurcle penetrates through a loop ligature coil in a loop ligature line containing groove and stretches into the positioning cylinder; when the pressurization connector pressurizes the pressurization cavity, a pressurization hole and an inner cavity of the positioning cylinder, the loop ligature coil is tightened along with change in pressure of the pressurization cavity, blood stagnating in the left aurcle is squeezed into the ventriculus sinister through pressure intensity, and the problem that when the left aurcle is blocked, thrombi are formed due to blood stasis and abnormal blood flow in the left aurcle is solved.