11 results about "Aortic valve replacement" patented technology

A non-invasive diagnostic system assesses the optimal timing for aortic valve replacement (AVR) by quantifying left-ventricular Frank-Starling reserve before irreversible myocardial damage occurs. The system (i) acquires left-ventricular ejection time (LVET) and other systolic-time intervals from optical or vibrational sensors positioned on the patient, (ii) induces a reversible preload change—e.g., passive leg raise or posture transition—to create a controlled venous-return increment, (iii) processes the paired baseline and post-maneuver waveforms to extract systolic time interval metrics, and (iv) analyzes the ΔLVET / Δpreload relationship against historical or population references. A diminished LVET response signals loss of contractile reserve, enabling timely AVR while myocardial changes remain reversible. The platform integrates measurement hardware, a data-processing engine, a data-analysis module, and a reporting interface, and may be configured as a wrist, ring, chest, or ear sensor. The method can be implemented at point-of-care without operator-dependent imaging or invasive monitoring.

The application discloses a guide wire transvalvular guide device for aortic valve replacement surgery, comprising: an inner tube providing a guide wire channel, the distal end of the inner tube being a guide wire outlet; the multiple far-end bags are isolated from one another, and the far-end bags are sequentially arranged on the periphery of the inner tube in the circumferential direction; the outer tube is slidably arranged on the periphery of the inner tube in a sleeving mode, and the far-end bag can be stored to adapt to interventional delivery; the inner tube and the outer tube are controlled by the control handle, a plurality of near-end bags are arranged in the control handle, and the near-end bags and the far-end bags are communicated in a one-to-one correspondence mode and are loaded with fluid; the driving sleeve and the rotating sleeve are arranged on the peripheries of all the near-end bags in a sleeving mode, an extrusion part protruding inwards in the radial direction is arranged in the driving sleeve, and when the driving sleeve rotates, the extrusion part acts on the near-end bags and enables the far-end bag exposed out of the outer tube to deform so as to change the pointing direction of the guide wire outlet. Through mutual linkage of the far-end bag and the near-end bag, the guide wire outlet direction is accurately adjusted, the interventional delivery and release performance is optimized, and the operation efficiency and convenience are improved.

The application provides a rotating type artificial mechanical heart valve, and belongs to the technical field of heart valves, and comprises: a valve ring; a valve leaflet group, which is rotationally arranged in the valve ring; when the valve leaflet group is in an open state, a spiral channel is formed in the valve ring; and when the valve leaflet group is in a closed state, the valve leaflet group limits blood flow through the valve ring; the rotating type artificial mechanical heart valve of the application forms a spiral channel with the same rotation direction as the blood rotation flow state when the valve leaflet group is in the open state; the spiral channel is arranged to effectively rotate the blood flow, generate corresponding spiral flow state, and the rotation of the outlet blood flow is beneficial to the full flow and development of the blood flow in the aorta, reduces the turbulence, stagnation area and damage to the normal rotation flow state in the aorta, and the heart valve provided by the application has excellent hemodynamic characteristics and can effectively inhibit the aortic dilation complication caused by aortic valve replacement.

An aortic valve replacement prosthesis that is delivered through a catheter and does not depend only on friction for fixation. According to the device, multiple supporting arms (50) are provided on an intermediate portion (102) of a tubular body (105); the supporting arms are “D”-shaped after full expansion, and are fixed between a narrowest part (73) of the aorta close to the heart and a narrowest part (74) on an aortic annulus (70), so as to achieve sufficient match between the outer surfaces of the support arms (50) and surrounding tissues; each supporting arm (50) comprises three landing areas (54) and two bending sections (59). The present invention can accurately control the position of a valve to be released on the aortic annulus (70), and thus, adverse events caused by existing fixation relying solely on friction are avoided, thereby better curing aortic valve diseases.

The invention discloses a transcatheter aortic valve replacement auxiliary device, and relates to the technical field of TAVR treatment, and the transcatheter aortic valve replacement auxiliary device comprises a conveying and recycling unit which comprises a conveying pipe used for aortic valve replacement assistance; the protective umbrella unit is installed on the conveying pipe, used for intercepting thrombus / plaque and comprises a block body arranged on the surface of the conveying pipe in a sleeving mode, a rotating shaft is arranged on the block body in a rotating mode, and opening and closing pieces are installed on the rotating shaft and the conveying and recycling unit. The cerebral embolism risk is greatly reduced, operation safety is guaranteed, full coverage of three cerebral blood supply branches is achieved through the inverted-cone-shaped hollow filter screen, the aperture is accurately controlled within the balance interval of thrombus interception and blood circulation, thrombus / plaques can effectively enter the cerebral vessels of the brain, meanwhile, red blood cells and blood platelets are allowed to normally pass through, cerebral ischemia is avoided, and the blood circulation rate is increased. The hollow filter screen is made of a medical elastic material, the risk of blood vessel scratching is avoided in the unfolding / folding process, the protection effect and the biological safety are both considered, and a key guarantee is provided for high-risk patients.

To enable an accurate implant of an artificial valve and a precise development thereof in an aortic valve replacement surgery.SOLUTION: Disclosed is an artificial aortic valve which can expand and shrink in a radial direction and suitable for an implant of a balloon of a delivery catheter in a radially-shrunk state. The artificial aortic valve includes a support frame having three rows extending in a circumferential direction of an angled strut. One row of optional two continuous angles struts of the angles strut extending in the circumferential direction forms a peak and recess. A row of adjacent angled strut is mutually connected via a link (a diamond-shaped cell or a rhombohedral) and forms two rows of cell. The artificial aortic valve includes three valve projections, an inner skirt, and an outer skirt. The support frame and the delivery catheter provides a method for easily and accurately developing the artificial aortic valve at a target part.SELECTED DRAWING: Figure 1

Methods and devices are provided for protecting cerebrovascular circulation from embolic fragments released during indexed surgery. The embolic protection filter is delivered in a reduced profile configuration via the access catheter and positioned on the aorta across the three major vascular openings leading to the cerebral circulation. Thereafter, the indexing surgical catheter is advanced through the same access catheter to perform indexing surgery. The indexing procedure may be transcatheter aortic valve replacement.

The present disclosure relates to the field of medical device technology, and more specifically, to an artificial aortic valve sinus complex. The artificial aortic valve sinus complex comprises a leaflet lower edge skirt and leaflets. One side of the leaflet lower edge skirt is adapted to abut and connect to the valve annulus, while the leaflet lower edge is coupled to the other side of the leaflet lower edge skirt to form a valve pocket between the leaflet and the sinus wall. This solution reduces the operational difficulty of aortic valve replacement and improves the success rate of replacement.

A docking station for use in aortic valve replacement comprises an inner wire frame forming a valve seat configured to receive or couple to an artificial valve. The docking station may include an outer wire frame that may be joined to the inner wire frame at one or more apices, and the outer wire frame may include a series of cells about a circumference of the outer wire frame. The docking station may include a sealing skirt that extends from the valve seat to the apices and turns upward along an exterior region of the outer wire frame. The docking station may include a ratio of a width to a length of the docking station includes a ratio greater than 1:1 and less than 3:1.

Systems and methods for monitoring and managing aortic valve stenosis are disclosed. An example medical device system includes a data receiver to receive heart sound information sensed by a mobile heart sound sensor, and a stenosis detector to detect changes in aortic valve surface area from a baseline non-stenosis state using heart sound components such as S1 and S2 sounds. Based on changes in aortic valve surface area, the stenosis detector may generate an aortic stenosis indicator indicating the presence and severity of aortic valve stenosis. Such indicators may be provided to the user, trigger symptom monitoring and estimation of functional deterioration of the patient, facilitate evaluation of patient candidate qualifications for aortic valve replacement, or triage of heart failure management strategies.

A method for supporting a medical procedure, the method comprising: obtaining a three-dimensional image of a vessel of a patient; deriving measurements of the vessel from the three-dimensional image; constructing a model of fluid flow in the vessel using the measurements; and using a trained machine learning model to make predictions about the medical procedure based on outputs of the model of fluid flow. The medical procedure may comprise implantation of a device and the predictions may comprise at least one of: a recommendation of a size or type of device; a recommendation of a placement of the device; and a predicted lifetime of the device in situ. The medical procedure may comprise an Aortic Valve Replacement, desirably a Transcatheter Aortic Valve Replacement or a valve-in-valve procedure.