91 results about "Artificial heart" patented technology

The application discloses a heart valve device and relates to the technical field of artificial heart valves, which comprises an outer valve frame and a valve leaflet assembly connected to the inside of the outer valve frame, and the outer valve frame is a ring-shaped grid frame; the outer valve frame comprises an inflow side grid frame and an outflow side grid frame arranged in sequence from an inflow end to an outflow end, and the inflow side grid frame and the outflow side grid frame form an annular recess for clamping a native valve ring on the outer periphery of the outer valve frame; the outflow side grid frame comprises a plurality of groups of grid support units connected in sequence along the circumferential direction and enclosed into a ring, and the grid support unit comprises an outer convex grid support and an inner concave grid support, and the outer surface of the inner concave grid support is arranged in a concave manner relative to the outer surface of the outer convex grid support. In this way, the anterior leaflet of the original mitral valve can be attached to the inner concave grid support, the extrusion of the outer valve frame on the anterior leaflet is reduced, the anterior leaflet is prevented from being extruded to the left ventricular outflow tract by the outer valve frame, and the outflow area of the left ventricular outflow tract is prevented from being reduced to cause obstruction.

The present application relates to a kind of trans-catheter heart valve replacement system, which is composed of artificial heart valve and valve anchoring device, wherein the valve anchoring device can be wrapped outside valve chordae tendineae, while capturing native valve leaflet, providing positioning point for subsequent implantation of artificial heart valve;Artificial heart valve can be implanted in heart, and replace the physiological function of native valve.The valve anchoring device and artificial heart valve can be matched and positioned, in order to prevent the two from being too tight and continuous extrusion, friction and causing chordae tendineae rupture, there are two kinds of cooperation between them: the first cooperation state, can let artificial heart valve and valve anchoring device abut each other, ensure the stability of structure and position when the two are matched with each other;Second cooperation state, there is gap between artificial heart valve and valve anchoring device at this time, so that native valve leaflet or chordae tendineae can pass through, to reduce the contact area between valve replacement system and chordae tendineae as much as possible, avoid extruding chordae tendineae.

The present disclosure discloses a matching method and device of a heart valve and an electronic device. The method comprises: determining a plurality of target planes in a heart according to an anatomical structure image of the heart; determining a structural feature of the heart in each plane according to the anatomical structure image; determining a junction point in each target plane of the plurality of target planes according to the structural feature, wherein the junction point is a point at a junction edge between any two adjacent leaflets of the heart valve of the heart, and the junction edge is a connecting position between any two adjacent leaflets; determining a first push-away range corresponding to each target plane according to the junction point and the structural feature of the heart; determining a second push-away range corresponding to the heart valve according to the first push-away range corresponding to each target plane; and determining an artificial heart valve matched with the heart valve according to the second push-away range. The present disclosure solves the technical problem that the accuracy cannot be guaranteed due to the determination of the heart valve according to experience in the related art.

The invention belongs to the technical field of artificial heart, and discloses an artificial heart magnetic suspension blood pump motor system technology based on wireless energy supply. The system is composed of a data acquisition module, a control algorithm module and an execution module. The data acquisition module acquires information such as blood flow, blood pressure, temperature and energy through various sensors and transmits the information to the control algorithm module. The control algorithm module adopts a model prediction control algorithm and calculates optimal control parameters according to the collected information. The execution module comprises a magnetic suspension blood pump motor, and the rotating speed of the magnetic suspension blood pump motor is dynamically adjusted according to the control parameters to meet physiological needs of the patient. According to the magnetic suspension blood pump motor system based on wireless energy supply, the problems of friction, energy loss and heating are reduced, and the reliability of the system is improved. And through a wireless energy supply mode, the movement freedom degree of the patient is effectively improved, and the system stability and the service life are enhanced.

This invention belongs to the field of extracorporeal circulation monitoring technology and discloses a multi-parameter linkage monitoring system for an artificial heart-lung machine, including an artificial heart-lung machine circuit, a detection component, an execution component, and a controller. The artificial heart-lung machine circuit includes a venous drainage line, a blood reservoir, a blood pump, a membrane oxygenator, an arterial perfusion line, and a gas supply line. The detection component is used to detect venous pressure, fluid level, pressure before and after the membrane oxygenator, arterial perfusion flow rate, blood oxygen, and gas supply pressure and flow rate. The controller performs time alignment on the detection signals within the same sampling period and, combined with changes in similar detection signals in adjacent sampling periods, distinguishes between insufficient drainage, increased membrane oxygenator resistance, and abnormal gas supply, outputting corresponding deceleration, speed limiting, gas supply adjustment, gas supply switching, pump shutdown, alarm, and lockout control signals. This system is used for linkage monitoring and control of abnormal sources in the extracorporeal circulation circuit.

This invention discloses a novel valve stent and artificial heart valve, belonging to the field of medical device technology. The valve stent has a hollow, symmetrical, mesh-like tubular structure, with a first layer of hexagonal mesh groups, a second layer of polygonal mesh groups, and a third layer of polygonal mesh groups arranged sequentially from the outflow end to the inflow end. The stent has a small overall mesh count and symmetrical structure, resulting in uniform deformation during compression and expansion. It exhibits excellent radial support and minimal expansion rebound, significantly reducing the risk of paravalvular leakage. While maintaining radial support, this invention can reduce the stent strut width to 0.2–0.4 mm, and the minimum outer diameter of the valve after compression can reach 2.5–4.5 mm. Simultaneously, the overall length change during stent compression and expansion is minimal, greatly improving the smoothness of vascular delivery and the accuracy of valve implantation positioning. This meets the clinical needs of transcatheter aortic valve replacement surgery, enhancing the safety and effectiveness of artificial heart valve implantation.

A delivery device for a replacement heart valve implant includes a handle having first and second rotatable knobs, and an elongate shaft assembly extending from the handle. A distal portion of the shaft assembly includes an implant holding portion configured to constrain the implant in a radially collapsed configuration. The implant includes a first feature and a second feature. The first knob includes a first tactile element representative of the first feature. The second knob includes a second tactile element representative of the second feature. The first tactile element may be embossed on the first knob. The second tactile element may be embossed on the second knob. The first and second tactile elements are configured to reduce a user's cognitive load during deployment of the implant.

The present invention relates to an implantable artificial device, such as an artificial heart valve, and to a mounting configuration and method for attaching a soft component, such as a valve leaflet or skirt, to the frame of such an artificial valve. [Solution] The valve leaflets are connected to the struts of the frame via primary sutures, which are passed in an in-and-out pattern along the cusp end portion of the valve leaflets, and the secondary sutures are passed around the struts through the primary sutures and have a plurality of self-tightening structures configured to contract on the struts under tension.

This image shows a device for checking the rotation speed of the circulating motor in an artificial heart-lung machine, in order to prevent unintentional backflow of circulation when the motor speed is reduced. As shown in the image, the set coast speed (a speed pre-set to prevent accidental backflow when changing the motor speed) and the motor speed are displayed on an arc-shaped indicator using differences in brightness. An icon indicating the set coast speed is displayed outside the indicator, and an icon indicating the current motor speed is displayed inside the indicator. The indicator displays the motor speed with different brightness levels until it reaches the reference coast speed, and when it exceeds the coast speed, allowing the user to check the rotation speed at a glance. Note that the display of the indicator and icons may be reversed; for example, the icons for the set coast speed and motor speed may be displayed around the indicator, and the current motor speed may be displayed on the arc-shaped indicator using differences in brightness.

A device for treating a diseased native valve in a patient is provided, the device comprising: a frame structure; valve segments radially arranged within the frame structure, the valve segments including a plurality of leaflets; and a plurality of commissure attachment mechanisms coupling the leaflets to the frame structure, each commissure attachment mechanism extending radially inward from the outflow end of the frame structure to form a gap between an inner diameter of the outflow end and an outflow edge of the valve segment. Other embodiments and methods of use are also provided.

1. Name of the product in this design: Cardiac stent. 2. Purpose of this design: This design is used to maintain or connect to an artificial heart valve. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A bowl-shaped permanent magnet brushless direct-current motor, including a bowl-shaped stator core and a plurality of permanent magnets; wherein, the bowl-shaped stator core includes a stator yoke portion and a plurality of bent teeth; a height difference exists between a tooth shoe of the bent tooth and a plane on which the stator yoke portion is located, and the tooth shoe of the bent tooth is located at the same height as the permanent magnet in an axial direction, so that an armature magnetic flux path is located at the same height as a permanent magnet excitation magnetic flux path, thereby implementing an unobstructed magnetic flux path.

The invention relates to a blood shearing device and a blood compatibility evaluation method. The blood shearing device comprises an objective table, a fixing support, a supporting beam, a stator, a rotor and a driving source. The device can simultaneously adjust the roughness and wettability of the material surface, breaks through the limitation that only a single factor can be researched in the prior art, and provides a more comprehensive platform for systematically evaluating the blood compatibility; in the experimental method, red blood cell hemolysis is detected, and the degradation condition of plasma protein is evaluated synchronously, so that the overall injury mode of blood components under the action of an artificial surface can be reflected more truly. Experimental basis can be provided for material selection and surface optimization of blood contact type medical instruments such as an artificial heart pump, an ECMO and a hemodialysis machine, the clinical complication risk can be reduced, and development of artificial organs and blood purification technologies is promoted.

An artificial heart valve comprises a frame, a plurality of flexible leaflets attached to the frame, and a plurality of support members, each support member being attached to a corresponding leaflet. The leaflets are movable relative to the frame between an open configuration, in which the leaflets permit blood flow therebetween in a direction having at least a component in a forward direction, and a closed configuration, in which the leaflets prevent or restrict blood flow therebetween in a direction having at least a component in a backward direction which is opposite to the forward direction. The support members are movable with the leaflets relative to the frame. When the leaflets are in the closed configuration and exposed to a back pressure having at least a component in the backward direction, a force is exerted on the leaflets in the backward direction, and the support members at least partially prevent or resist deformation of the leaflets. A leaflet arrangement for an artificial heart valve and a method of manufacturing an artificial heart valve are also disclosed.

A magnetic driver generates a magnetic field that rotates about an axis and induces nutation in a disc with an array of magnets (wobble plate). The magnetic driver can be a drive disc with an array of magnets and rotated by a drive motor, or can be electromagnetic coils sequentially energized, to provide the rotating magnetic field. The wobble plate nutates about the axis of the rotating magnetic field but is constrained from rotating about the axis. The wobble plate can be enclosed in a pump housing where nutation of the wobble plate causes pumping of a fluid to occur, such as in an implanted Left Ventricular Assist Device (LVAD) or a Total Artificial Heart (TAH). Driven in reverse, an input pumping fluid may induce nutation of the wobble plate which in turn induces rotary motion of a drive disc that drives a generator or a motor / generator.

The invention discloses an artificial heart valve with a clamping structure. The artificial heart valve comprises a first valve seat body, a second valve seat body and an artificial valve leaflet, the second valve seat body is arranged on the outer side of the first valve seat body, and the artificial valve leaflet is arranged between the first valve seat body and the second valve seat body; the second valve seat body is provided with a parting line, the midpoint of the parting line intersects with the central axis of the second valve seat body, and the parting line divides the second valve seat body into two halves. The overall symmetry of the artificial valve is improved, meanwhile, the influence of traditional suture on the peripheral suture edge part of the artificial valve leaflet is avoided, and the service life of the artificial heart valve is prolonged. Meanwhile, the replicability and quantitative production of the whole structure of the artificial valve are guaranteed, and the production efficiency is improved.

The utility model belongs to the technical field of artificial heart-left ventricle auxiliary circulation equipment, and particularly discloses an LVAD motor stator system, which comprises an outer stator, an inner stator and a winding arranged between the outer stator and the inner stator, the inner stator is formed by stacking a plurality of silicon steel ring sheets, an axial modulation groove is arranged along the circumferential direction of the inner side of the inner stator, and the inner side of the inner stator is connected with the winding. According to the utility model, the modulation grooves are arranged in the inner stator, so that the harmonic amplitude is reduced, and the fluctuation of the torque is reduced. The utility model also discloses a motor which is filled with epoxy resin, so that the relative positions of related parts are ensured, the coaxiality and dynamic balance of the related parts are ensured, the motor is stable in high-speed operation, the vibration can be reduced, the motor has relatively good biological safety, relatively high heat conductivity coefficient and chemical stability, and the heat is quickly dissipated when the motor is in high-speed operation. The device is suitable for being placed in a human body.

To provide a prosthetic heart valve device, system, and methods.SOLUTION: A system is provided, comprising a prosthetic heart valve device (535, 555, 900, 1108, 1230, 1260, 1400, 1535), and a delivery system (1100, 1105, 1110, 3000, 1500). The prosthetic heart valve device (535, 555, 900, 1108, 1230, 1260, 1400, 1535) comprises a differentially deformable anchoring structure (800, 1229, 1259) concentrically aligned with, radially adjacent to, and in direct connection with a valve frame (700). The atrial region (805, 1005, 1410, 1805, 1850) of the differentially deformable anchoring structure (800, 1229, 1259) comprises a plurality of alignment structures intended to aid in rotational orientation. This atrial region (805, 1005, 1410, 1805, 1850) is in direct connection with the valve frame (700) through inflow region connection elements (745).SELECTED DRAWING: Figure 8D

The present application relates to the field of medical devices, and provides an artificial heart valve frame, a double-layer artificial heart valve frame and an artificial heart valve prosthesis, comprising a framework, an upper anchoring structure and a lower anchoring structure, the framework comprises a valve frame main body, the upper anchoring structure is connected with the upper end of the framework and extends to the outside of the valve frame main body; the lower anchoring structure is connected with the lower end of the framework and extends to the outside of the valve frame main body. When the artificial heart valve frame changes to a radial contraction state, the upper anchoring structure elastically folds in the direction of downward and close to the valve frame main body; the lower anchoring structure elastically folds in the direction of upward and close to the valve frame main body. The present application alleviates the technical problem that the length of the existing valve frame is relatively long after compression, which affects the success rate of operation and the operability of the transseptal puncture approach mode for operation, and at the same time, the surgical risk can be reduced.

This application discloses a testing system and method for artificial heart valve implants, relating to the field of medical device testing technology. The system includes: a ventricular simulator, an atrial simulator, a highly transparent and compliant valve testing chamber containing an artificial heart valve, a vascular compliance simulator, and a vascular damping simulator forming a circulation loop, a high-speed camera, and a laser generator. The circulation loop simulates the blood flow environment of the artificial heart valve, with a tracer particle suspension added to the flow medium. The ventricular simulator, atrial simulator, vascular damper, and vascular compliance simulator provide power, storage space, resistance, and pulse pressure to the flow medium, respectively. The laser generator and high-speed camera work together to acquire particle images after implantation of the artificial heart valve. The particle images are uploaded to a computer for visual analysis of the heart valve pulsating flow field based on digital particle image velocimetry technology, thereby enabling quantitative analysis of the risk after implantation at the intended site.

To provide an artificial valve that can be delivered laterally. [Solution] A laterally deliverable artificial valve comprising a valve frame and a flow control component fitted within a central channel of the valve frame and configured to allow blood flow through the central channel in a direction along the central axis of the artificial valve, wherein the actuator is detachably attached to a proximal inferior annular anchor element of the valve frame.

The invention discloses an artificial heart valve and a preparation method thereof. A valve leaflet material of the valve is a PLCL nanofiber membrane with an I-type collagen coating on the surface. The artificial heart valve not only has good biocompatibility and hemodynamic performance of a biological valve and does not cause acute blood coagulation, but also has good mechanical performance and anti-calcification performance of a mechanical valve, ensures smooth one-way flow of blood, is not easy to calcify, and is relatively long in service life. The mechanical property and the biocompatibility of the artificial heart valve have high adjustability, and particularly, the mechanical property and the biocompatibility are adjusted by controlling the monomer composition of the PLCL nanofiber membrane material and the thickness of the coating, so that the mechanical property and the biological characteristic which are similar to those of a native heart valve are achieved. In addition, the artificial heart valve is of an integrally-formed single-piece structure, the valve leaflets do not need to be sewn, and the machining cost is low.

Methods and assemblies are disclosed for attaching leaflets to a frame of a prosthetic heart valve using a connecting skirt. As an example, the prosthetic heart valve may include an annular frame with a plurality of struts and a valve leaflet structure mounted within the frame and comprising a plurality of leaflets. A leaflet portion of each leaflet may be connected to the frame by a connecting skirt, where each connecting skirt includes a central portion and opposing side base portions on opposing sides of the central portion connected to and disposed between each of the frame and the leaflet leaflet portion, and each connecting skirt may further include a side extension portion extending outwardly from the leaflet leaflet portion and across the struts of the frame disposed between the leaflet leaflet portions of two adjacent leaflets.

The application provides a blood supply and demand balance adjustment method and system of a total artificial heart and the total artificial heart, and belongs to the technical field of medical devices. The blood supply and demand balance adjustment method of the total artificial heart obtains the real-time blood supply and demand balance index of the total artificial heart, compares the blood supply and demand balance index with the blood supply and demand balance index threshold obtained and set in advance, and obtains the blood supply information of the total artificial heart to the human body. In the case that the blood supply information of the total artificial heart to the human body shows that the blood supply of the left ventricle of the total artificial heart and the right ventricle of the total artificial heart to the human body is unbalanced, the running speed of one of the left and right ventricles is changed based on the correlation between the running speed of the power system and the blood pumping capacity of the ventricle, and the blood pumping capacity of the left and right ventricles is also changed, so that the blood supply of the left and right ventricles can be accurately adjusted in real time to achieve balance.

A controller for an artificial heart enables activity-specific adjustments to the operation of an artificial heart by obtaining sensor data from a plurality of sensors monitoring characteristics of a patient's body, and using the sensor data as input to one or more control parameter models for identifying control parameters to be provided to the artificial heart to adjust the operational parameters of the artificial heart. The controller is in wireless communication with the artificial heart via an application program interface (API)-based communication channel that facilitates communication between the controller and the artificial heart. Moreover, a cloud-based management computing entity may be utilized to train and / or execute one or more models to enable real-time updates to the operational characteristics of the artificial heart to enable the artificial heart to appropriately accommodate activities of the patient.

The application belongs to the technical field of electric digital data processing, and is an artificial heart, comprising an artificial heart bpm adaptive parameter auxiliary design method. The method is suitable for artificial heart bpm adaptive parameter adjustment by using computer aided design. The method uses digital data of blood oxygen concentration change amount within a certain time after patient movement, radial artery blood pressure and blood oxygen concentration change amount before and after movement to obtain expected blood oxygen drop speed and blood oxygen recovery difficulty after movement. Movements with similar blood oxygen recovery difficulty are classified into the same group. The artificial heart typical scaling of each movement in the group is determined. The high degree of the artificial heart typical scaling ratio of other movements is compared. The high degree, the artificial heart typical scaling ratio and the expected blood oxygen drop speed are used to correspondingly adjust the artificial heart scaling ratio after the current movement ends. The method effectively represents the decline of patient heart and lung function by the obtained abnormal degree, and improves patient comfort by correspondingly increasing the artificial heart scaling ratio.

The application discloses a kind of tangential magnetization rotor integrated shaftless impeller's magnetic suspension artificial heart pump structure, including impeller and several equidistantly connected independent blades of equal size and material in rotor inside, the blade is located in rotor center, but not connected on main shaft, realize the integration of impeller and rotor and the shaftless of impeller, improve traditional central shaft driven impeller to four peripheral driving type.Blade equidistantly connects in rotor shield sleeve inside, realizes shaftless, to be integrated with rotor in one body.The application adopts above-mentioned tangential magnetization rotor integrated shaftless impeller's magnetic suspension artificial heart pump structure and can reduce motor volume, easy to transplant;Meanwhile, the integrated structure can prevent blood from flowing through motor air gap to the maximum, to reduce the situation of hemolysis and thrombosis.

This invention provides a systemic-pulmonary dual-circulation simulation system for testing the hemodynamic performance of an artificial heart. It includes a cardiovascular silicone model, a ventricular pulsation device, a controller, a data acquisition device, a fluid reservoir, and an artificial heart. The cardiovascular silicone model, ventricular pulsation device, and fluid reservoir are connected in series to form a blood circulation loop. The cardiovascular silicone model includes systemic and pulmonary circulation loops; the ventricular pulsation device has an internal electric cylinder that drives a piston to reciprocate via a push rod, causing fluid flow in the blood circulation loop; the controller controls the movement of the ventricular pulsation device to simulate blood flow with physiological pulsatile flow characteristics; the data acquisition device collects pressure and flow rate data at different locations on the cardiovascular silicone model. This invention can not only completely simulate the blood flow patterns of the human cardiovascular system but also be used to test the impact of artificial heart implantation on the hemodynamic performance of the human cardiovascular system under different physiological conditions, contributing to the development and research of artificial hearts.

Packaging systems are used for medical devices. For example, this specification describes packaging systems for implantable medical devices such as, but not limited to, artificial heart valves that can be delivered in a minimally invasive manner using a catheter system. Some embodiments of the packaging systems described herein are designed to facilitate the preparation process that clinicians perform to prepare implantable medical devices.