9 results about "Right atrial" patented technology

The invention discloses an interventional valve ring device and an interventional valve device. The interventional valve ring device and the interventional valve device can be used for mitral valve and tricuspid valve lesions. The interventional valve ring device is mainly composed of a valve ring, a valve ring conveying system, a fixing nail and a fixing nail conveying system. The interventional valve is mainly composed of a fixing support, a supporting support, a supporting support covering film and valve leaflets. The interventional valve ring and the interventional valve enter the heart through the interventional delivery system and can pass through the apex of the heart, the femoral vein, the jugular vein or the subclavian vein, the right atrium or the left atrium. The interventional valve is fixed in the interventional valve ring, and a minimally invasive, safe and effective treatment method can be provided for a patient.

VfA cardiac therapy uses an implantable medical device or system. The implantable medical device includes a tissue-piercing electrode implanted in the basal and / or septal region of the left ventricular myocardium of the patient's heart from the triangle of Koch region of the right atrium through the right atrial endocardium and central fibrous body. The device may include a right atrial electrode, a right atrial motion detector, or both. The device may be implanted completely within the patient's heart or may use one or more leads to implant electrodes in the patient's heart. The device may be used to provide cardiac therapy, including single or multiple chamber pacing, atrioventricular synchronous pacing, asynchronous pacing, triggered pacing, cardiac resynchronization pacing, or tachycardia-related therapy. A separate medical device may be used to provide some functionality for cardiac therapy, such as sensing, pacing, or shock therapy.

The engagement of the two atria via atrial pacing therapy is determined using one or more metrics based on monitored external electrical activity. For example, external electrical activity can be monitored during delivery of the atrial pacing therapy, right atrial and left atrial components can be generated based on the monitored external electrical activity, and one or more metrics can be generated based on the right atrial and left atrial components. One or more metrics can then be used to determine whether the atrial pacing therapy has biatrial engagement.

Systems and methods are described for modulating blood flow through a blood vessel by providing an implantable device implanted in the blood vessel, monitoring, pressure in the blood vessel, and in response to detecting when a first pressure in the blood vessel is above a first predefined pressure range, causing actuation of the implantable device to modulate the blood flow through the blood vessel or an adjacent blood vessel according to a first actuation cycle configured to maintain the first pressure within the first predefined pressure range. In addition, the systems and methods may, in response to detecting, when a second pressure is above a second predefined pressure threshold, cause switching of the implantable device to a second actuation cycle to alter the modulation of the blood flow through the blood vessel.

This invention discloses a systemic circulation venous simulation system, comprising a right ventricular simulation component, an arterial compliance simulation component, a venous vessel module, a damping module, a throttling valve, a collapsible venous segment, a venous compliance simulation component, a right atrial simulation component, a drive module, and a data acquisition module. The right ventricular simulation component simulates the pumping function of the right ventricle; the arterial compliance simulation component simulates the elastic energy storage characteristics of the arterial system; the venous vessel module includes a collecting chamber, a superior vena cava return vessel, an inferior vena cava return vessel, and a vena cava confluence conduit; the collapsible venous segment prevents excessive negative pressure in the venous system; the venous compliance simulation component reduces the impact of right atrial pressure fluctuations on the venous vessels; and the right atrial simulation component simulates the right atrial filling state through internal volume changes. This simulation system can be used for in vitro testing of vena cava intervention devices.

A pulmonary arterial catheter system may include a port housing coupled to a catheter and supporting: a right ventricular port, a right atrial port, a pulmonary artery distal lumen, a balloon port, and a volume sensor port. A pulmonary arterial catheter system may include a plurality of volume sensors positioned along a length of the catheter and in communication with the volume sensor ports.

Systems and methods are described for modulating blood flow through a blood vessel by providing an implantable device implanted in the blood vessel, monitoring, pressure in the blood vessel, and in response to detecting when a first pressure in the blood vessel is above a first predefined pressure range, causing actuation of the implantable device to modulate the blood flow through the blood vessel or an adjacent blood vessel according to a first actuation cycle configured to maintain the first pressure within the first predefined pressure range. In addition, the systems and methods may, in response to detecting, when a second pressure is above a second predefined pressure threshold, cause switching of the implantable device to a second actuation cycle to alter the modulation of the blood flow through the blood vessel.

Embodiments described herein include devices, systems, and methods for reducing the distance between two locations in tissue. In one embodiment, an anchor may reside within the right ventricle in engagement with the septum. A tension member may extend from that anchor through the septum and an exterior wall of the left ventricle to a second anchor disposed along a surface of the heart. Perforating the exterior wall and the septum from an epicardial approach can provide control over the reshaping of the ventricular chamber. Guiding deployment of the implant from along the epicardial access path and another access path into and through the right ventricle provides control over the movement of the anchor within the ventricle. The joined epicardial pathway and right atrial pathway allows the tension member to be advanced into the heart through the right atrium and pulled into engagement along the epicardial access path.

A lightweight Mamba right atrial segmentation system based on Atlas prior and boundary awareness is presented, belonging to the field of medical image processing technology. This invention addresses the challenge of existing methods simultaneously achieving segmentation accuracy, lightweight models, and real-time performance. It utilizes a constructed right atrial probabilistic map (Atlas) to provide anatomical structure prior guidance for subsequent segmentation tasks, enhancing performance in LGE-MRI right atrial image segmentation. An attention-guided boundary enhancement module strengthens boundary feature representation at the feature level, while a dynamic weight scheduler optimizes boundary segmentation at the loss function level. This approach obtains complementary information from both region segmentation and boundary optimization, ensuring high image segmentation performance. Furthermore, the lightweight Mamba segmentation network significantly reduces the number of parameters and computational complexity while maintaining long-range dependency modeling capabilities, guaranteeing real-time segmentation. This method can be applied to right atrial image segmentation.