101 results about "Heart apex" patented technology

Methods and devices for repairing a cardiac valve. A minimally invasive procedure includes creating an access in the apex region of the heart through which one or more instruments may be inserted. The device can implant artificial heart valve chordae tendineae into cardiac valve leaflet tissues to restore proper leaflet function and prevent reperfusion. The device punctures the apex of the heart and travels through the ventricle. The tip of the device rests on the defective valve and punctures the valve leaflet. A suture or a suture/guide wire combination is inserted, securing the top of the leaflet to the apex of the heart. A resilient element or shock absorber mechanism adjacent to the outside of the apex of the heart minimizes the linear travel of the device in response to the beating of the heart or opening/closing of the valve.

A method is provided, comprising: (1) making a transapical puncture into a left ventricle of the heart; (2) making a transseptal fenestration in the heart; (3) delivering a prosthetic valve via the transapical puncture and implanting the prosthetic valve at a mitral valve of the heart; and (4) subsequently to delivering the prosthetic valve and making the transseptal fenestration, closing the transapical puncture. Other embodiments are also described.

This invention describes apical access methods and devices that enable repair, modification, removal, and/or replacement of a defective heart valve while allowing the beating heart to deliver blood flow through the defective valve annulus for an extended period of time in volumes sufficient to sustain life. The invention is comprised of a flow housing having a blood inflow opening, a blood outflow opening, and a one-way valve disposed within the flow housing between the inflow and outflow openings.

For connecting a cardiac biventricular assist means including a dual-chamber pumping device, and an electrically powered compressor means provided between the two chambers (12, 15) a partially flexible one-part or multi-part adapter (20) is provided with two through-passageways (21, 22; 34, 35) each separate from the other, said adapter being securely held, on the one hand, in a port (4a) in the apical portion of the septum (4) and, on the other, in a port (2a) in/at the apex of the left ventricle (2) so that the through-passageway (22; 35) extending into the left ventricle (2) is connected directly or by means of a first flexible tube (11) to the inlet (12a) of the one chamber (12) and the other through-passageway (21; 34) extending into said right ventricle (3) is connected directly or by means of a second flexible tube (14) to the inlet (15a) of the other chamber (15).

A cardiac constraint jacket is formed of flexible material defining a volume between an open upper end and a lower end. The jacket is dimensioned for an apex of a patient's heart to be inserted into the volume through the open upper end and for the jacket to be slipped over the heart. A delivery device is used to place the jacket on the heart. The delivery device includes a plurality of attachment locations. Each of the attachment locations is releasably secured to separate positions surrounding a periphery of the open upper end of the jacket. The delivery device also includes a control arrangement which is selectively movable between an open position and a closed position. The control arrangement is connected to the attachment locations such that the attachment locations are in a compact array urging the open upper end of the jacket into a collapsed configuration when the control member is in the closed position. When the control arrangement is in the open position, the attachment locations are in an open array. The attachment locations urge the open upper end of the jacket into an open configuration sufficient for the heart to be inserted into the jacket volume through the open upper end and for the jacket to be slipped over said heart.

In vitro performance testing system and testing methods for transcatheter mitral valve stents, involving implantable prostheses, in particular testing devices and testing methods for performance testing of heart valves, including valves with built-in mitral valve stents Test parts, liquid circulation device and monitoring device; the first test part is a heart sample with a circulation inlet at the apex of the left ventricle, and the second test part is a section of artificial blood vessel or blood vessel sample for suturing the tested mitral valve stent; liquid circulation device It is connected with the first test part to form a first test circulation path of steady flow circulation or a second test circulation path that simulates human ventricular pulsation; the liquid circulation device is connected to the second test part to form a third test circulation path connected by circulation side branches, It can realize the in vitro test of the hydrodynamic performance of the mitral valve stent, stent fixation state, valve regurgitation, paravalvular leakage, and the impact on the surrounding important tissue structure, and complete the durability test of the mitral valve stent.

The invention discloses a mitral valve clamp capable of realizing horizontal and vertical clamp and a conveyor system. A main body of the system comprises the mitral valve clamp capable of realizing horizontal and vertical clamp and a conveyor; the mitral valve clamp is composed of an upper valve clamp member, a lower valve clamp member and a vertical arm clamp member; a clamp arm of the mitral valve clamp includes a straight neck section and an arc section, and vertical and horizontal anastomosis or clamping two clamp valve leaflets can be formed under assisted clamp of a vertical arm clamp;and the conveyor is composed of an outer push-pull tube, a vertical arm clamp push tube, a clamp tube or a screw rod and a sheath tube, the conveyor components support the mitral valve clamp and are put in the sheath tube, the conveyor realizes minimally invasive intervention from a chest and the tip of a heart, and can clamp mitral valve leaflets horizontally and vertically and effectively prevent backflow.

Devices and methods for providing localized pressure to a region of a patient's heart to improve heart functioning, including: (a) a jacket made of a flexible biocompatible material, the jacket having an open top end that is received around the heart and a bottom portion that is received around the apex of the heart; and (b) at least one inflatable bladder disposed on an interior surface of the jacket, the inflatable bladder having an inelastic outer surface positioned adjacent to the jacket and an elastic inner surface such that inflation of the bladder causes the bladder to deform substantially inwardly to exert localized pressure against a region of the heart.

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 heart auxiliary device which comprises an outer shell. The outer shell is formed by bonding and fixing a non-elastic flexible rope on the outer surface of a heart model in a spiral mode, a sealed left air bag is arranged along the outer surface of a left heart chamber of the heart model and located in the outer shell, a sealed right air bag is arranged along the outer surface of a right heart chamber of the heart model and located in the outer shell, buckling rings are arranged on the upper portions of the inner walls, close to the side wall of the left air bag and the side wall of the right air bag, of the outer shell respectively, the upper end of the left air bag and the upper end of the right air bag are fixed on the buckling rings, a lower opening of the left air bag is communicated with a left air inlet pipe, a lower opening of the right air bag is communicated with a right air inlet pipe, the left air inlet pipe and the right air inlet pipe penetrate out of the heart apex at the bottom of the outer shell and extend outwards, and the extending parts of the left air inlet pipe and the right air inlet pipe are communicated with an air source control device. The heart auxiliary device is not in direct contact with blood, anticoagulation is not needed in the application process, a series of blood vessel complications like bleeding, thrombosis, hemolysis and immunoreactions are avoided, the infection rate is reduced, and the heart auxiliary device can be suitable for single-heart-chamber assistance and double-heart-chamber assistance, and is flexible in using method.

A delivery catheter system includes a guide catheter, an anchor catheter, a collapsible and expandable anchor, a balloon formed from a portion of the positioning catheter, and a needle. The anchor may be for anchoring a prosthetic heart valve in a native heart valve. The anchor may be configured to be received within the anchor catheter. The balloon may be inflated or deflated and provide mechanical support to enable the needle to pierce a ventricle wall. A metallic guide wire can simultaneously be inserted through the aorta to outline the heart when viewed through fluoroscopic imaging.

The invention relates to a valve clip and a clipping system thereof. The valve clip can be used for effectively treating MR (Mitral Regurgitation) and TR (Tricuspid Regurgitation) after being implanted into the human body by the clipping system. By using the valve clip, the axial operating space of the valve clip can be shortened, and the operating direction can be changed, so that the capturing and clamping operation can be performed from the other side of the valve (i.e., the atrium side) so as to reduce the injury damage on the atrium and the chordae tendineae in the surgical operation process; the length of the valve clip can be shortened, so that the implanted valve clip is shorter so as to reduce the space of the ventricle side occupied by the valve clip, reduce the injury capable ofbeing caused by the valve clip on the heart tissue, and reduce the thrombus forming risk; in addition, after the clipping system passes through the femoral vein and punctures the septum of the rightatrium and the left atrium, the right atrium and the left atrium are used as a delivery path of the clip; the intercostal incision and cardiac apex puncture are not needed; and the surgical trauma issmaller.

The invention relates to a mitral valve replacement system for a percutaneous transcatheter, and belongs to the technical field of medical instruments. The mitral valve replacement system comprises avalve frame supporting body, an artificial valve leaflet and a ventricular septum anchoring structure. The valve frame supporting body is arranged between an atrium and a ventricle and provided with ahollow cavity with the two ends open. The artificial valve leaflet is arranged on the inner wall of the cavity of the valve frame supporting body. The ventricular septum anchoring structure is arranged between the valve frame supporting body and a ventricular septum. The invention provides the mitral valve replacement device intervened through a catheter via a femoral vein admission passage and aims to solve the problems that an existing interventional mitral valve system is generally large in valve stent, has the left ventricular outflow passage obstruction risk, has potential complicationsin transapical admission passage and anchoring and the like, and the mitral valve replacement device provided by the invention is more minimally invasive and firmer in anchoring, and the technical scheme of mitral valve replacement suffering from left ventricular outflow tract obstruction can be effectively avoided.

Devices and methods for providing localized pressure to a region of a patient's heart to improve heart functioning, including: (a) a jacket made of a flexible biocompatible material, the jacket having an open top end that is received around the heart and a bottom portion that is received around the apex of the heart; and (b) at least one inflatable bladder disposed on an interior surface of the jacket, the inflatable bladder having an inelastic outer surface positioned adjacent to the jacket and an elastic inner surface such that inflation of the bladder causes the bladder to deform substantially inwardly to exert localized pressure against a region of the heart.

The invention discloses a mitral valve opening area detection method, system and device based on artificial intelligence. The method comprises the steps that a two-dimensional section video reflectinga mitral valve structure in an ultrasonic cardiogram of a detection object is acquired; inputting the two-dimensional section video into a trained deep learning classification model, and obtaining aprediction value of the two-dimensional section video containing mitral valve stenosis image features; if the prediction value meets a preset condition, inputting the heart tip four-cavity heart mitral valve continuous Doppler frequency spectrum section image of the detection object into an image segmentation network model, and obtaining a frequency spectrum oscillogram corresponding to the section image; and predicting the mitral valve opening area according to the frequency spectrum oscillogram. According to the method, the system and the equipment, the accuracy and the consistency of ultrasonic detection are greatly improved.

The invention provides a deep learning atrial septal defect detection method and device, and the method comprises the steps: obtaining an ultrasonic cardiogram, preprocessing the ultrasonic cardiogram, and extracting a region of interest; carrying out feature extraction on the region of interest, and identifying a subsword process atrial septal frontal section, a subsword process atrial septal sagittal section, a cardiac apex four-cavity cardiac tangent plane, a low-position paracarpal four-cavity cardiac tangent plane and a paracarpal aorta short-axis tangent plane; detecting the minimum distance point of the atrial septal defect; segmenting heart structures of a subsword atrial septal frontal section, a subsword atrial septal sagittal section, a cardiac apex four-cavity cardiac tangent plane, a low paracardial four-cavity cardiac tangent plane and a paracardial aorta minor axis section to obtain segmentation results, the heart structures including a left atrium, a right atrium, a left ventricle, a right ventricle, an aorta and pulmonary arteries; and according to the segmentation results, filtering the detected minimum distance point bounding box of the atrial septal defect, andtaking the filtered result as an atrial septal defect detection result.

The invention discloses an echocardiogram recognition method for congenital heart disease. The method comprises the following steps: collecting five RGB images of a left greenhouse long-axis section RGB image beside the sternum, a main artery short-axis section RGB image beside the sternum, a heart apex four-cavity heart tangent surface RGB image, a xiphoid process lower double-chamber section RGB image and a sternum superior fossa aortic arch long-axis section RGB image of a patient; the five obtained RGB images are respectively processed into five gray level images; carrying out adaptive processing on the five gray level images; connecting the five grayscale images subjected to adaptive processing together in parallel to form a parallel input image matrix; and inputting the image matrix into a trained five-channel neural network, and giving prediction probabilities of three results of VSD, ASD and no congenital heart disease corresponding to the input image matrix by the five-channel neural network according to pre-learned knowledge.

A class of introducers is comprised of a plurality of straight sections and at least two curved sections with a pre-determined sense of curvature preceded, separated and followed by the straight sections, which introducer is adapted by its shape to access the septal wall or apex of a heart. One of the plurality of straight sections is a distal-most straight section. The straight and curved sections define a predetermined three dimensional shape by means of the distal straight section lying out of plane with respect to the remaining curved and straight sections.

The invention provides a left ventricle segmentation method and device and electronic equipment, and the method comprises the steps of obtaining cardiac medical image data; determining a cardiac apexposition and a cardiac base position in the medical image data according to the heart physiological structure characteristics; determining a left ventricular cavity segmentation result by adopting a region growing algorithm based on the cardiac apex position and the cardiac base position; according to the left ventricular cavity segmentation result, performing segmentation based on a level set algorithm to obtain a left myocardial segmentation result; and combining the left ventricular cavity segmentation result and the left myocardial segmentation result to obtain a left ventricular segmentation result. As the apex and the heart base are located in the ventricle, an accurate left ventricular cavity segmentation result can be obtained by adopting a region growing method based on the apex and the heart base, and due to the fact that the left ventricular cavity and the left myocardium are large in gray scale difference and obvious in gray scale gradient change, accurate left myocardium segmentation is conducted through a level set algorithm on the basis of the left ventricular cavity segmentation result, and the evolution speed is fast.