26 results about "Ventricular assist device" patented technology

Apparatus and methods are described including an impeller (50) that includes a proximal bushing (64) and a distal bushing (58). Two or more helical elongate elements (52) extend from the proximal bushing (64) to the distal bushing (58), and an axial structure (54) is disposed inside of the two or more helical elongate elements (52), and along an axis around which the helical elongate elements (52) wind. The impeller (50) includes an impeller-overexpansion-prevention element (72). The impeller-overexpansion-prevention element is a single integrated structure that includes a ring (73) disposed around the axial structure (54), and a plurality of elongate elements (67) each of the elongate elements (67) extending from the ring to a respective helical elongate element (52) and being coupled to the respective helical elongate element (52) so as to prevent radial expansion of the impeller (50). Other applications are also described.

1. Name of the product in this design: Percutaneous ventricular assist device. 2. Purpose of this design: for use in medical and health care, for emergency support in cases of acute myocardial infarction, cardiogenic shock, high-risk PCI, etc. 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.

The invention relates to an intrusive foldable left ventricle auxiliary device, the near end of a driving shaft is connected with a motor, the far end of the driving shaft is connected with a pump head assembly, and the pump head assembly comprises a foldable impeller driven by the driving shaft and an expandable support covering the periphery of the foldable impeller; the expandable stent is covered with a blood flow flexible film, a blood inlet is formed in the far end of the blood flow flexible film, and at least one blood outlet is formed in the near end area of the blood flow flexible film; the blood flow flexible membrane comprises a first channel, an expansion section and a second channel. When blood passes through the expansion section, the blood flow speed is reduced, the flow distribution is uniform, and the shearing force borne by the blood is directly reduced, so that the hemolysis risk is remarkably reduced from the source; meanwhile, blood flow is more stable, turbulent flow and flow stagnation areas are reduced, and the thrombosis risk is reduced; the near-end edge of the expansion section is located on the far side of the near-end edge of the expandable stent, after blood is decelerated, damage caused by impacting the inner wall of the stent is reduced, and hemolysis is further reduced.

The invention discloses a control circuit, device and control method of a ventricular assist device, a microcontroller can control a blood pump to stop and protect the blood pump from being damaged due to overcurrent when a voltage signal is greater than a first voltage threshold, and can also control the blood pump to stop and protect the blood pump from being damaged due to overcurrent when the voltage signal is less than a second voltage threshold. The human body is protected from being influenced by blood pump underflow, and the human body safety is protected; the isolation power supply module can stop outputting the current to the driving circuit when the output current of the isolation power supply module is larger than the preset current, so that the blood pump is protected from being damaged due to overcurrent. Therefore, in the use process of the blood pump, overcurrent and undercurrent protection can be carried out on the blood pump, and the safety of the blood pump and the safety of a human body are protected.

The embodiment of the invention provides an intelligent detection system and device based on ventricular assist equipment, and relates to the technical field of medical instruments.The system comprises the ventricular assist equipment and detection equipment, and the ventricular assist equipment is implanted into the heart of a patient in a percutaneous intervention mode and assists the heart of the patient in blood pumping; the detection device is used for detecting physiological nerve parameters of a patient during operation of the ventricular assist device, and the detection device executes the following intelligent detection method: acquiring a physical measurement signal at the current moment; mapping the physical measurement signal into a target discharge frequency of the baroreceptor according to a preset nonlinear mapping relation; and based on the target discharge frequency, adopting a physiological correlation model to predict the target neural activity of the patient. By applying the scheme provided by the embodiment, the autonomic nerve regulation state of the patient can be accurately and continuously evaluated.

An implantable pump includes a rigid housing with an oblate spheroid shape and having an inner chamber divided by a movable elastomeric membrane into a gas sub-chamber which is connectible through a drive line to an external pneumatic source, and a blood sub-chamber which is connectible through a graft assembly to an anatomical heart. The housing includes a blood port opening oriented at an angle and at the upper apex of the housing and connected to the blood sub-chamber, and a gas port opening to the gas sub-chamber that is situated at a lower apex of the housing. The pump is provided with a drive line that includes a gas conduit and a heart sensor, the drive line connectible to a drive system that is capable of delivering gas flow through the drive line gas conduit in response to signals driven by the heart sensor.

Apparatus and methods are provided for use with a left-ventricular assist device (20) including a pump-outlet tube (24) configured for insertion, through an aorta of a subject, into a left ventricle of a heart of the subject such that a proximal section of the pump-outlet tube is disposed within the aorta and a distal section of the pump-outlet tube is disposed within the left ventricle. A pressure sensor (206) outputs a signal indicative of an aortic pressure within the aorta over an interval. A processor (25) compares an indication of the minimum of the aortic pressure to an indication of the peak-to-peak amplitude of the estimated pressure gradient between the aorta and the left ventricle over an interval, and, in response thereto, outputs an indication that the pump-outlet tube (24) is positionally biased toward the aorta. Other applications are also described.

The present disclosure relates an apical connector and a method for implanting and removing a ventricular assist device. The apical connector includes a first connection assembly and a second connection assembly. The first connection assembly includes a first base, a first positioning portion, and an annular cuff. The second connection assembly includes a second base and a first stopping portion. When the second base is mounted to the first through hole, the first stopping portion is located at a second position, and the first positioning portion is blocked on an end surface of the first stopping portion facing a first direction.

This invention provides a method and apparatus for recommending ventricular assist devices, relating to the field of medical device technology. The method includes: obtaining first data characterizing the real-time cardiac state of a target subject and second data characterizing the historical cardiac state; predicting the target ventricular assist device used by the target subject based on the first and second data; and recommending the target ventricular assist device to the target subject. Applying the solution provided in this embodiment to recommend ventricular assist devices can improve recommendation efficiency.

The invention relates to a sensor head device for a heart support system, wherein the sensor head device has at least one sensor carrying element, wherein the sensor carrying element has at least one sensor cavity for accommodating at least one sensor and / or at least one signal transmitter cavity for accommodating at least one signal transmitter.

This application provides an intelligent control system and device based on a ventricular assist device, relating to the field of medical device technology. The system includes a ventricular assist device and a control device. The control device controls the ventricular assist device and executes the following control method: acquiring the physical measurement signal of the ventricular assist device at the current moment; based on the physical measurement signal, using a signal prediction model in the first closed loop of a dual-closed-loop control architecture to predict the patient's pressure signal and nerve signal at the next moment; based on the pressure signal and nerve signal, using a speed prediction model in the first closed loop to predict the target speed at the next moment, and using the second closed loop of the dual-closed-loop control architecture to control the ventricular assist device according to the target speed. Applying the solution provided in this embodiment enables adaptive control of the ventricular assist device.

The invention relates to the technical field of medical instruments, and discloses a double-optical-fiber pressure sensor assembly and a percutaneous ventricular auxiliary device, and the double-optical-fiber pressure sensor assembly comprises a housing, a first optical fiber pressure sensor and a second optical fiber pressure sensor. The shell is provided with a first inner cavity and a second inner cavity, a first window and a second window are formed in the two opposite sides of the outer wall of the shell respectively, the first window is communicated with the first inner cavity, and the second window is communicated with the second inner cavity. The end portion of the first optical fiber pressure sensor extends into the first inner cavity, and the first pressure sensing element is attached to the first window. The end portion of the second optical fiber pressure sensor extends into the second inner cavity, and the second pressure sensing element is attached to the second window. The two optical fiber pressure sensors are packaged and protected through the arrangement of the shell, integrated installation of the two optical fiber pressure sensors and the catheter is facilitated, the optical fiber pressure sensors can work in blood for a long time, mutual interference of the two pressure sensing elements is avoided, and the accuracy and stability of pressure detection are improved.

This application discloses a method, apparatus, device, storage medium, and program product for determining blood flow rate. Applied to ventricular assist devices, the ventricular assist device includes a blood pump motor and a blood pumping catheter connected to the blood pump motor. The method includes: acquiring first operating information of the blood pump motor, a first usage duration of the blood pumping catheter, and first hemodynamic parameter information of a target object; wherein the target object includes the object on which the blood pump motor acts; inputting the first operating information, the first usage duration, and the first hemodynamic parameter information into a blood flow rate determination model to obtain the blood flow rate output by the blood flow rate determination model. According to the embodiments of this application, the blood flow rate is comprehensively determined by considering factors such as the usage duration of the blood pumping catheter and the hemodynamic parameters of the target object, thereby improving the accuracy and robustness of the blood flow rate determination.

A method for providing therapeutic treatment to reduce pre-load may be provided. The method may include placing a ventricular assist device (VAD) at least partially within a left ventricle or a right ventricle of a patient, and placing a catheter-based device including an adjustable flow limiting element (FRE) such that the FRE is disposed within a superior vena cava (SVC) of the patient. The method may include receiving information from the VAD and / or conduit-based FRE device, determining a first determination value based on the information, and controlling at least one performance parameter of the VAD and / or conduit-based device based on the first determination value.

Apparatus and methods are described including an impeller (50) that includes a proximal bushing (64) and a distal bushing (58). Two or more helical elongate elements (52) extend from the proximal bushing (64) to the distal bushing (58), and an axial structure (54) is disposed inside of the two or more helical elongate elements (52), and along an axis around which the helical elongate elements (52) wind. The impeller (50) includes an impeller-overexpansion-prevention element (72). The impeller-overexpansion-prevention element is a single integrated structure that includes a ring (73) disposed around the axial structure (54), and a plurality of elongate elements (67) each of the elongate elements (67) extending from the ring to a respective helical elongate element (52) and being coupled to the respective helical elongate element (52) so as to prevent radial expansion of the impeller (50). Other applications are also described.

A sliding bearing and a ventricular assist device, the sliding bearing being configured to be adapted to mount an expandable stent of the ventricular assist device and comprising a bearing body comprising a bearing proximal section, a bearing distal section, and a bearing channel provided in the bearing body; the bearing channel is configured to be suitable for mounting a rotor of the ventricular auxiliary equipment, so that the rotor and the bearing near section form axial sliding and circumferential running fit; the bearing distal section is configured to be adapted to mount a pigtail tube of a ventricular assist device. According to the sliding bearing, integrated installation of the expandable stent, the rotor and the pigtail tube of the ventricular auxiliary equipment is achieved, and the strength and reliability of a connecting structure of the expandable stent, the rotor and the pigtail tube are ensured without affecting axial sliding and circumferential rotation of the rotor on the sliding bearing; and meanwhile, the structural size can be reduced as much as possible due to matching and integrated installation, so that the injury degree of the ventricular auxiliary equipment to a human body in an operation is reduced, and the success probability of the operation is improved.

The invention relates to the technical field of medical instruments, and discloses a two-way valve and ventricular auxiliary equipment. The two-way valve comprises a valve body, the valve body is of a tubular structure with a proximal end and a telecentric end, a first window is formed in the side wall of one side of the valve body, and a first contact area is arranged at the edge of the end, close to the telecentric end, of the window on the inner side wall of the valve body; the valve clack is rotatably arranged in the valve body, the valve clack is divided into two sections, the middles of the two sections are connected through a rotatable structure, a valve clack contact area is arranged at the position, opposite to the first contact area, of the valve clack, and the valve clack can rotate between a first state position and a second state position relative to the valve body; the opening window is opened or closed. According to the technical scheme, through the structure that the valve clack is divided into the two sections, when blood flows back, the telecentric end section falls in the blood flow direction and is attached to the inner surface of the catheter on the side face opposite to the window of the valve body; the proximal end section also falls into the valve body and can be attached to the inner surface of the valve body, and due to supporting of the distal end section, the proximal end section is more stable and not prone to shaking.

The invention relates to the technical field of medical instruments, and provides a blood flow control method and device for ventricular assist equipment. The method comprises the steps that the systolic period and the diastolic period of a ventricle are determined based on collected electrocardiosignals; controlling the blood pump to operate at a first rotating speed in the systolic period, and controlling the blood pump to operate at a second rotating speed in the diastolic period; wherein the first rotating speed and the second rotating speed are obtained through calculation based on a preset target blood flow, a preset rotating speed difference, a pump front and back pressure difference monitored in real time, a systolic period duration and a diastolic period duration. According to the blood flow control method and device of the ventricular auxiliary equipment, the systolic period and the diastolic period of the ventricle can be determined based on the electrocardiosignal, the blood pump is controlled to operate at the first rotating speed in the systolic period, and the blood pump operates at the second rotating speed in the diastolic period, so that the pumped blood flow presents physiological pulsation.

Provided is a fluid driving device (100). The fluid driving device (100) is configured to drive a fluid in a flushing pipeline (4B) to enter an interventional instrument. The flushing pipeline comprises pipeline branches (41). The fluid driving device (100) comprises placement regions (3), which are each provided with at least three mounting positions (31) arranged in a first axial direction. The pipeline branches (41) and the placement regions (3) are all multiple, and at least some of the pipeline branches (41) correspond one-to-one with the multiple placement regions (3). The multiple placement regions (3) are arranged in a second axial direction, and each pipeline branch (41) corresponding to the placement region (3) is in a bent shape within its corresponding placement region (3).

The embodiment of the utility model provides a flushing system of a ventricular assist device, and relates to the technical field of medical instruments, the flushing system comprises a flushing control device and a flushing device, the flushing equipment comprises a flushing pressure detection module, a flushing cavity detection module, a radio frequency identification (RFID) module, a bubble detection module, a flushing driving motor and a motor position detection module; the flushing control equipment comprises an acquisition module, a communication module, a processing module, an alarm module, a control module and a driving module; by applying the scheme provided by the embodiment, effective and stable flushing control can be realized.

A blood pump device with a leak-proof aortic adapter assembly includes a T-shaped flow connector comprising a catheter insertion portion, a collar portion, and a truss. The catheter insertion portion is connected to the collar portion and the truss is disposed in the catheter insertion portion. The inner wall of the catheter insertion portion is tapered at both ends of the catheter insertion portion and is compliantly matched to the implant site artery. The proximal end of the collar portion is configured to be connected to an inlet adapter of a blood pump. The aortic adapter assembly is provided with a quick connector type coupler and a method of installation to achieve insertable flow communication between a ventricular assist device and the human circulatory system.

Apparatus and methods are described including a ventricular assist device that includes an impeller configured to be placed inside a left ventricle of a subject, and a frame configured to be disposed around the impeller. The frame is shaped such that, in a non-radially constrained configuration of the frame, the frame defines a cylindrical central portion, and a distal conical portion that is disposed distally with respect to the cylindrical central portion and that widens from a distal end of the frame to a distal end of the cylindrical central portion. The frame defines struts that define openings therebetween, and all openings that are defined at least partially within the distal conical portion of the frame extend into the cylindrical central portion of the frame. Other applications are also described.

The invention discloses a shaftless left ventricle auxiliary device capable of achieving human-computer interaction, and relates to the technical field of medical instruments. The left ventricle auxiliary device comprises a cylinder body, a magnetic driving mechanism and a control host, the barrel comprises an inner barrel, an outer barrel and a plurality of blades, and the outer barrel sleeves the periphery of the inner barrel; the magnetic driving mechanism comprises a coil winding and a permanent magnet, the coil winding is arranged on or in the outer cylinder and forms a stator with the outer cylinder, and the permanent magnet is arranged on or in the inner cylinder and forms a rotor with the inner cylinder. The shaftless left ventricle auxiliary device capable of achieving human-computer interaction is provided with the control host arranged in vitro, and good human-computer interaction is achieved; moreover, the contact area between the blade and blood is obviously reduced, and the damage of the blade rotating at a high speed to blood cells is reduced; besides, the outer diameter of the blood pump is reduced, the overall size of the device is small, the blood pump can be directly connected to the aorta, and the problem that an existing centrifugal pump type left ventricle auxiliary device needs heart puncture and then suture is solved.

An epicardial implant system prevents right heart failure following left ventricular assist device (LVAD) implantation through dual-mechanism support of the right ventricular free wall and tricuspid valve annulus. The device comprises a biocompatible independent adjustment mechanisms for ventricular wall constraint and annular geometry optimization. The invention simultaneously treats both ventricular dilation and annular valve dysfunction through separate adjustable elements. Epicardial placement eliminates atriotomy requirements while providing real-time hemodynamic optimization. Atraumatic anchoring permits repositioning without tissue damage. Preclinical validation confirms six-minute implantation with independent component efficacy under afterload conditions. The ventricular component prevents dilation while the annular component reduces regurgitation, validating dual-mechanism necessity. The prophylactic approach addresses mechanical disruption causing right heart failure in 40% of LVAD recipients. Applications extend beyond LVAD to coronary bypass, and valvular corrections. Biodegradable embodiments accommodate pediatric cardiac growth. The system provides the first dedicated prophylactic intervention for post-surgical right heart failure across multiple cardiac procedures.

The invention discloses a control system and a control method for ventricular assist equipment. Belongs to the technical field of medical instruments and comprises a central control system comprising a processor and at least one first communication interface connected with the processor; one first communication interface is connected with the corresponding ventricular auxiliary device; each ventricular auxiliary device is used for providing pump blood power for a corresponding target object; the processor is used for acquiring a first parameter of a corresponding target object and / or a second parameter of the ventricular assist device through the ventricular assist device, the first parameter comprises basic information of the target object and physiological parameter information of the target object, and the second parameter comprises a current operation parameter. According to the embodiment of the invention, the operation parameters of the ventricular auxiliary equipment can be monitored in real time, and at least one ventricular auxiliary equipment can be remotely controlled, so that the labor cost is reduced, and the auxiliary efficiency of the ventricular auxiliary equipment on a patient is improved.

The application relates to a flow determination method, a training method of a flow detection model, equipment and a medium, and belongs to the technical field of medical devices. The method comprises the following steps: acquiring perfusion data corresponding to a trans-catheter ventricular assist device, blood pressure data and motor operation data corresponding to the trans-catheter ventricular assist device; performing flow detection processing according to the perfusion data, the blood pressure data and the motor operation data to obtain flow data corresponding to the trans-catheter ventricular assist device. The technical scheme provided by the application greatly reduces the dependence of flow detection on a flow sensor, effectively solves the technical problem that the pumping flow of the trans-catheter ventricular assist device in the heart is difficult to detect, reduces the complexity of flow detection and improves the efficiency of flow detection.