15 results about "Heart-Lung Machine" patented technology

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.

The present invention relates to a pulsatile positive-displacement pump with a flexible positive-displacement diaphragm which is operated pneumatically and by whose movement the blood is aspirated and displaced. A mechanical switching device in the interior of a drive unit ensures an autonomous operation of the blood pump, wherein no electricity or electronics system is needed.

Customizable and intuitive user interfaces are provided for medical systems and devices, such as cardiopulmonary bypass systems, perfusion systems, extracorporeal circulation apparatus, and heart-lung machines, that allow easy access to critical patient data to facilitate blood perfusion, as well as monitoring and adjusting various physiological parameters of the patient and extracorporeal blood flow circuit during procedures such as cardiopulmonary bypass and extracorporeal membrane oxygenation (ECMO).

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.

An embodiment includes a cardioplegia delivery system having a console, controller, and disposables. The console, in conjunction with the disposables, combines blood from the heart-lung machine and crystalloid from the IV-bag in a specified ratio and then adds in a drug (arrest agent and / or additive). The electro-mechanical console incorporates a blood / crystalloid pump, temperature controllable water circulation system, pressure and temperature monitors, a sensor interface with the disposables, an arrest agent pump, an additive pump and ultra-sonic air detection sensors. The system monitors and controls the blood-crystalloid ratio, drug concentration, flow rate, pressure, temperature, and delivery route of the cardioplegia solution delivered to the patient. The system is a software-controlled system with a graphical user interface controller. The controller is utilized to initiate / stop cardioplegia delivery, monitor delivery parameters and view / save relevant case information and data.

Methods and systems for controlling one or more pumps of a heart-lung-machine. An illustrative method may comprise receiving an actual flow rate of a pump, determining the actual flow rate is from a primary pump, determining an available amount of the actual flow rate of the primary pump that is available to one or more subordinate pumps, comparing the available amount of the actual flow rate of the primary pump to a sum of set flow rates of the one or more subordinate pumps, and operating the one or more subordinate pumps in a proactive control mode or a reactive control mode.

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 utility model discloses a pipe wrench support for extracorporeal circulation, which comprises a fixing piece, a universal arm and a hanging ring, specifically, the fixing piece is suitable for being fixed on a support column of a heart-lung machine; the universal arm is connected to the fixing piece; the hanging ring is arranged on the universal arm in a penetrating mode and suitable for containing the pipe wrench. According to the pipe wrench support for extracorporeal circulation, the universal arm is fixed to the supporting column of the heart-lung machine, the hanging ring is arranged on the universal arm in a penetrating mode, and a pipe wrench can be placed on the hanging ring before and after use, so that the embarrassing phenomenon that the pipe wrench has no place to be placed when not used and has no place to be found when urgently needed is avoided, and convenience in an operation is greatly improved; the height and the angle of the placing platform can be adjusted at will, the position and the direction of the interlinked tee joint are changed accordingly, and great convenience is brought to operation of a perfusion worker.

The invention relates to a cannula (1), in particular a cannula for bidirectional perfusion, having a distal cannula end (2) for introduction into a blood vessel, for example into a leg artery, a proximal cannula end (3) for connection to an extracorporeal system, for example to a heart-lung machine and / or to an ECMO device, and having a main fluid channel (4) extending from the distal cannula end (2) to the proximal cannula end (3), wherein the main fluid channel (4) is formed by an outer wall (5), wherein a side channel element (6) is formed in and / or on the outer wall (5), wherein the side channel element (6) can be moved between a first position in which it is introduced into and / or onto the outer wall (5) and a second position in which it is removed from the outer wall (5), and wherein the side channel element (6), in the removed, second position, forms a side channel (7), characterised in that at least one fluid pressure channel (8, 9) runs from the proximal cannula end (3) to the side channel element (6) in order to move the side channel element (6) between the first position and the second position by means of a fluid. The invention further relates to a system (14) comprising a cannula (1) and a dilator (15).

To optimize intraoperative visualization of the mitral valve during intraoperative assessment of valvular regurgitation, a device according to the present invention provides an alternative method of filling the LV. The device can also provide direct coronary ostial and standard antegrade aortic root cardioplegia. A novel cannula is used in conjunction with the heart-lung machine during open-heart surgery. The device described herein features an additional port with extension tubing to be advanced through the aortic valve in a retrograde manner, resulting in an extended piece of tubing sitting in the left / right ventricle or coronary ostia. This new tubing can deliver cardioplegia or saline into the coronary ostia (cardioplegia) or left / right ventricle (saline). The coronary ostia are perfused thereafter with cardioplegia in standard fashion. The left / right ventricle may be distended with known pressure and / or volume, allowing the surgeon to assess the mitral valve in a hands-free and more physiologic loaded manner.

The present application relates to the technical field of medical devices, and discloses an extracorporeal circulation system and an assembling method thereof, wherein the extracorporeal circulation system comprises a heart-lung machine and a cardioplegic solution device, and the present application limits the bubble catcher to have a first state of being clamped on the pipeline of the heart-lung machine and a second state of being separated from the pipeline of the heart-lung machine, so that when the bubble catcher is in the second state, the bubble catcher can be installed on the pipeline of the cardioplegic solution device to detect the bubbles in the pipeline of the cardioplegic solution device. Since the bubble catcher on the heart-lung machine is a clip structure, the bubble catcher on the heart-lung machine is used on the cardioplegic solution device, which not only does not increase the pre-charge of the cardioplegic solution device, but also avoids the bubbles from entering the patient's body, thereby achieving the technical effect of improving the reliability of the use of the cardioplegic solution device.

A heart lung machine (HLM) includes: a pump actuator; an actuator control unit (ACU) operably connected to the pump actuator; a processing unit configured to receive a set of parameter data from the actuator; a display device configured to present a subset of the set of parameter data; and an input control device operably connected to the pump actuator. The input control device includes a rotatable knob. The ACU may be configured to: determine that the pump actuator has been stopped in response to a pump-stop trigger event; determine that the rotatable knob has been rotated to a first position; and in response to determining that the rotatable knob has been rotated to the first position, starting the pump actuator.

The present disclosure includes a system monitor and associated methods for a heart-lung machine (HLM) and / or other like device. Example system monitors may include a profile module adapted to accept user parameters and receive settings changes from a remote interface, and provide updated user parameters to a safety module based upon received settings changes. The system monitors of the present disclosure may include a subsystem module in communication with one or more subsystems. The subsystem module may be adapted to periodically scan subsystem data from the one or more subsystems and provide actual user parameters to the safety module from the scanned subsystem data. The safety module of the present disclosure may be configured to compare the updated user parameters to the actual user parameters, and correct the actual user parameters to match the updated user parameters.

The invention belongs to the technical field of extracorporeal circulation control, and discloses an artificial heart-lung machine multi-pump cooperative control system which comprises a main circulation loop, an auxiliary recovery loop, a pump set, a parameter acquisition unit and a control unit. The control unit is used for determining the target single-time feedback amount and controlling the recycling pump to perform feedback for several times according to the perfusion flow, the drainage flow, the venous pressure, the blood storage liquid level and the recycling liquid level, collecting parameters again after feedback, judging feedback conditions again, and entering a limited safety mode when collection is abnormal. The system is used for multi-pump cooperative control in the extracorporeal circulation process of the artificial heart-lung machine.

Provided are an information processing device, a computer program, an information processing method, and a learning model generation method capable of predicting the onset risk of acute kidney injury after surgery before surgery.SOLUTION: The information processing device includes a control unit, and the control unit acquires examination data of a patient before surgery using an artificial heart-lung machine, and in a case where the examination data before surgery is input, inputs the acquired examination data to a learning model for predicting an onset risk of acute kidney injury after surgery, and predicts the onset risk of acute kidney injury after surgery of the patient.SELECTED DRAWING: Figure 1