4 results about "Cardiac surface" patented technology

The application provides a kind of based on augmented reality navigation heart blood flow imaging system and navigation image generation method, it is related to biomedical optical imaging technical field, the system includes: laser speckle image acquisition unit according to electrocardiogram ECG signal determines acquisition window, and after the imaging focus is actively compensated based on real-time ranging result in the acquisition window, laser speckle image sequence of heart surface is collected;Navigation image generation unit quantifies the degree of stenosis of blood vessel according to blood flow index, and generates blood flow navigation image in combination with laser speckle image sequence;Navigation image projection unit projects blood flow navigation image to the corresponding blood vessel area of heart surface.The application provides based on augmented reality navigation heart blood flow imaging system and navigation image generation method, not only realizes high-fidelity, quantitative blood flow imaging and intuitive, in situ surgical navigation integration, also significantly improves the precision and safety of coronary artery bypass grafting and other heart surgery.

A method includes receiving a plurality of data points including electrical activation (EA) values measured at respective positions in at least a portion of a surface of a cardiac chamber of a heart of a patient. Using a predefined EA value criterion, the EA values in a given region of the cardiac surface are classified into multiple distinct EA wave-fronts, and multiple layers of EA values are calculated for the given region, wherein each EA layer includes the EA values found to belong to a respective and contiguous EA wave-front. The multiple EA layers are overlayed on a graphical representation of the surface. The graphical representation with the multiple overlaid EA layers is displayed to a user, with a graphical indication distinguishing between the multiple EA layers.

The invention discloses an electrocardiosignal visualization method and related equipment, and relates to the field of electrocardiosignal analysis. According to the method, body surface voltage feature vectors of at least one target moment are obtained from an electrocardiogram, a configured potential estimation model is called, each body surface voltage feature vector is processed, and heart surface electrical excitation intensity distribution of each target moment is obtained. And based on the heart surface electrical excitation intensity distribution at each target moment, rendering the heart three-dimensional model to obtain a target heart three-dimensional model corresponding to each target moment. According to the method, the target heart three-dimensional model of the heart electrical excitation state can be displayed, a user can conveniently and visually observe the process of heart electrical excitation from origin to conduction in the time period of electrocardiogram detection, and the abnormal electrical excitation part of the heart is judged in combination with the diagnosis result of the electrocardiogram.

A cardiac support device comprising an implant with a shell (21), wherein the cardiac support device is an active cardiac support device comprising at least one expandable unit (23), wherein the shell (21) has a structured surface (22) that promotes tissue ingrowth, wherein the structured surface is located on the outer, non-cardiac surface of the shell, and wherein the tissue-stiffened shell (21) forms a support for the at least one expandable unit (23).