CN212490965U - Extracorporeal life support blood circulation device - Google Patents
Extracorporeal life support blood circulation device Download PDFInfo
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- CN212490965U CN212490965U CN202020326957.6U CN202020326957U CN212490965U CN 212490965 U CN212490965 U CN 212490965U CN 202020326957 U CN202020326957 U CN 202020326957U CN 212490965 U CN212490965 U CN 212490965U
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Abstract
The utility model discloses an external life supports blood circulation device, include: a centrifugal pump, an oxygenator, a sensor, a flow channel loop, a sensor and a driving system; the centrifugal pump, oxygenator and drive system are integrated into one device. The utility model has the advantages that: the integrated, integrated and portable gas exchange device realizes the high-efficiency gas exchange after integration and reduces the blood damage degree. The equipment is simple and convenient to use, can be transported along with bed outage in a short time, is extremely suitable for the use of first aid, auxiliary condition, and the popularization degree is high, the operation degree of difficulty is low.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to an external life supports blood circulation device.
Background
Respiratory system diseases are the group of systemic diseases with the highest global incidence, and the main factor in the pathogenesis of critical respiratory diseases is Acute Lung Injury (ALI), which is the damage of alveolar epithelial cells and capillary endothelial cells caused by various direct and indirect injury factors, causing diffuse interstitial pulmonary disease and alveolar edema, and causing acute hypoxic respiratory insufficiency. The pathophysiology characteristics of lung volume reduction, lung compliance reduction and ventilation/blood flow ratio disorder are clinically manifested as progressive hypoxemia and respiratory distress, and lung imaging is manifested as non-uniform exudative disease, and the severe is called Acute Respiratory Distress Syndrome (ARDS). According to the ALI/ARDS diagnostic standard proposed by the European and American Union conference in 1994, the incidence of ALI and ARDS in the United states in 2005 is 79/10 ten thousand and 59/10 ten thousand respectively. In recent years, the incidence rate of ALI/ARDS can reach 25-50% during severe infection, the incidence rate of mass blood transfusion can reach 40%, and the incidence rate of multiple trauma can reach 11-25%. In addition, the longer the duration of the action of the risk factors, the higher the incidence of ALI/ARDS, and the prevalence of ARDS of 76%, 85% and 93% respectively when the risk factors last for 24, 48 and 72 hours, is the primary disease threatening human health.
ECMO (extracorporal Membrane oxygenation), a Chinese name of extracorporeal Membrane lung oxygenation, commonly known as "leaf-gram Membrane" and "artificial lung", is a medical emergency treatment device. ECMO was first successfully applied in 1972 by the university of michigan surgeon Robert barrett (Robert h. bartlett) for the treatment of patients with acute respiratory distress, and the technology became more mature as medical science advanced. ECMO is mainly used in clinical applications to provide continuous external respiration and circulation for severe cardiopulmonary failure patients, such as heart failure and acute respiratory distress syndrome, and also can be used for short-term cardiopulmonary support to perform complete cardiopulmonary function replacement (V-a ECMO, venous-arterial mode) or only replace pulmonary function (V-V ECMO, venous-venous mode) according to the needs of patients to maintain the lives of the patients, and to provide time for cardiopulmonary transplantation, functional recovery, and even patient life maintenance.
ECMO systems typically include a blood pump to provide an input flow, a membrane oxygenator to supply oxygen, heparin coated and pre-filled connecting tubing, a variable temperature water tank to maintain blood temperature, and various sensing devices such as blood oxygen saturation, venous line negative pressure sensing, and the like. The ECMO system on the market is large in size and complex in structural operation, is mainly used for maintaining life for a long time and is not beneficial to being used in emergency rescue. Meanwhile, the size is large, the operation is complex, and another problem is that the cost is too high, the rapid popularization and application cannot be realized, the method can be only used in a small number of large medical centers, and operators can use the method in clinical application only by needing a great deal of experience.
The hemodialysis and filtration system leads blood out of the body in a radial artery drainage mode and the like, and certain components in the blood are filtered out or added by a specific method to complete the treatment scheme of a patient.
Hemodialysis or filtration systems have a relatively small amount of blood to drain, are roller pump systems prone to blood damage, and cannot be used to relieve the symptoms of pulmonary dyspnea without the oxygenator to accomplish extracorporeal blood oxygenation. If the oxygenator is forcibly connected, the rolling pump is easier to generate blood damage under the same blood flow volume, and the using effect is far inferior to that of the low-damage centrifugal pump used by the utility model; and because the drainage volume is not enough, the blood flow speed is low, so that thrombus grows in the oxygenator, and the life risk of a patient is increased.
Therefore, the design of portableization, the simplification operation is the direction of future development, and it is favorable to reducing operating personnel training time, increases operating personnel, is favorable to the quick popularization of equipment, is favorable to effectively going on of first aid work, or under the scene that needs a large amount of uses to save patient's life.
SUMMERY OF THE UTILITY MODEL
The utility model provides an external life supports blood circulation device to prior art's defect, has solved above-mentioned problem.
In order to realize the purpose of the utility model, the utility model discloses the technical scheme who takes as follows:
an extracorporeal life support blood circulation device comprises a shell, wherein the surface of the shell is provided with a touch screen 1, an adjusting knob 2, a switch 3, a handle 4, a fixed seat 5, a bedside fixing frame 6, a centrifugal pump driving seat 7, an oxygenator fixed seat 8, a centrifugal pump 9, an oxygenator 10, a screen shaft 11 and a power supply 12;
the touch screen 1 is used for displaying the working information of the blood circulation system and touch screen control;
the adjusting knob 2 is used for adjusting the rotating speed of the centrifugal pump 9;
the switch 3 is used for a power switch of the blood circulation system;
the fixing seat 5 is annular, is horizontally fixed at the bottom of the shell and is used for stabilizing the whole device and preventing the equipment from being inclined when the blood circulation system is placed on a table top.
The bedside fixing frame 6 is annular, is fixed on the side surface of the shell and is used for fixing the blood circulation system at the bedside of a patient;
the centrifugal pump driving seat 7 and the oxygenator fixing seat 8 are arranged on the back or the top of the shell;
the centrifugal pump 9 is assembled on the centrifugal pump driving seat 7, the centrifugal pump 9 is in circuit connection with the centrifugal pump driving seat 7, and the centrifugal pump driving seat 7 is in circuit connection with the power supply 12;
the oxygenator 10 is fixed on the oxygenator fixing seat 8, and the oxygenator fixing seat 8 is connected with the power circuit.
The power supply 12 is used to power all components of the blood circulation system.
A flow channel loop, a blood oxygen monitoring probe, a micro-bolt/micro-bubble filter, a pressure sensor, a flow sensor, a driving circuit, a monitoring system and a protection system are arranged in the shell;
blood enters from an inlet of the flow passage loop, the flow passage loop sequentially passes through the centrifugal pump 9, the oxygenator 10, the blood oxygen monitoring probe, the micro-suppository/micro-bubble filter and the protection system, and finally the blood flows out from an outlet of the flow passage loop and is sent back to the human body.
A flow passage loop between the centrifugal pump 9 and the oxygenator 10 is provided with a pressure sensor and a flow sensor for reflecting the running state of the centrifugal pump and displaying the running state of the centrifugal pump;
a flow channel loop between the micro-suppository/micro-bubble filter and the protection system is provided with a pressure sensor and a flow sensor, and is used for monitoring the pressure and the flow after the oxygenation of the oxygenator after the centrifugal pump, reflecting the blood pressure and the current flow sent back to the human body and adjusting the state by a doctor;
the blood oxygen monitoring probe is used for monitoring the proportion of the blood oxygen content in blood;
the micro-thrombus/micro-bubble filter is used for filtering fine thrombus and bubbles in blood in the flow channel;
the driving circuit is used for driving the centrifugal pump and controlling the rotating speed, flow and running mode of the centrifugal pump;
the monitoring system is used for receiving signals sent by a pressure sensor and a flow sensor in the runner loop, integrating and processing the signals and displaying the signals to the outside through the touch screen 1;
the protection system sends an alarm when the monitoring system finds that abnormal parameters occur in the flow passage loop according to preset values and preset parameters, and simultaneously adjusts the mode of the centrifugal pump through the driving circuit to enable the centrifugal pump to be in a 0 flow state.
Further, the drive circuit is divided into a base module and a control module, the base module interface is an alternating current input 220V and mainly comprises three parts: AC/DC module, UPS, battery.
The AC/DC module mainly realizes the conversion work from alternating current 220V to direct current 24V, the converted 24V is output to the UPS, two batteries of direct current 24V are output to the UPS, and the UPS outputs uninterrupted direct current 19V power to the control module after receiving external 24V and 24V batteries.
The control module mainly comprises six components: the system comprises a DC/DC isolation conversion module, a redundancy module, an ohm dragon UPS, a PLC, a touch screen and a motor driving board.
The DC/DC direct current isolation conversion module has the function that the voltage of 19V-24V output by the base is regulated to 24V output and output to the redundancy module, then the redundancy module is output to the ohm dragon UPS, and the ohm dragon UPS is provided with the battery module, so that when the controller is not connected with the base and 24V direct current is not input outside, power supply work is undertaken, and the ohm dragon UPS outputs to the PLC, the screen and the motor driving board for power supply. And the two ohm dragon UPS modules are connected with the PLC, and transmit the battery power signal to the PLC for planning the battery power supply.
The PLC is a programmable logic controller used for controlling the work of a centrifugal pump, an oxygenator, a touch screen, a blood oxygen monitoring probe, a micro-suppository/micro-bubble filter, a pressure sensor, a flow sensor, a driving circuit, a monitoring system and a protection system.
Preferably, the touch panel 1 is fixed to the housing by a panel shaft 11, and the panel shaft 11 can rotate the touch panel 1 by an angle.
Preferably, the length, width and height of the shell are as follows: 290mm 260mm 160 mm.
Compared with the prior art, the utility model has the advantages of:
the centrifugal pump and the oxygenator are integrated, so that the device is more portable and is beneficial to simplifying the use and operation process; providing pulmonary function relief for acute lung injury in a variety of respiratory diseases; can be used for a large number of patients needing breathing assistance in a short time, is simple and convenient to use, can be transported along with bed power failure in a short time, and is extremely suitable for first aid and auxiliary conditions. The user has the advantages of convenient operation, high popularity and wide application prospect.
Drawings
Fig. 1 is a perspective view of a housing of a blood circulation device according to an embodiment of the present invention;
FIG. 2 is a front view of a housing of a blood circulation device according to an embodiment of the present invention;
FIG. 3 is a rear view of a housing of a blood circulation device according to an embodiment of the present invention;
fig. 4 is a left side view of a housing of a blood circulation device according to an embodiment of the present invention;
fig. 5 is a block diagram of the structure inside the casing of the blood circulation device according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments are provided according to the accompanying drawings, and the present invention will be described in further detail.
As shown in fig. 1 to 4, an extracorporeal life support blood circulation device comprises a housing, the surface of which is provided with a touch screen 1, an adjusting knob 2, a switch 3, a handle 4, a fixed seat 5, a bedside fixed frame 6, a centrifugal pump driving seat 7, an oxygenator fixed seat 8, a centrifugal pump 9, an oxygenator 10, a screen shaft 11 and a power supply 12;
the length, width and height of the shell are as follows: 290mm 260mm 160 mm;
the touch screen 1 is used for displaying the working information of the blood circulation system and touch screen control;
the adjusting knob 2 is used for adjusting the rotating speed of the centrifugal pump 9;
the switch 3 is used for a power switch of the blood circulation system;
the fixing seat 5 is annular, is horizontally fixed at the bottom of the shell and is used for stabilizing the whole device and preventing the equipment from being inclined when the blood circulation system is placed on a table top.
The bedside fixing frame 6 is annular, is fixed on the side surface of the shell and is used for fixing the blood circulation system at the bedside of a patient;
the centrifugal pump driving seat 7 and the oxygenator fixing seat 8 are arranged on the back of the shell;
the centrifugal pump 9 is assembled on the centrifugal pump driving seat 7, the centrifugal pump 9 is in circuit connection with the centrifugal pump driving seat 7, and the centrifugal pump driving seat 7 is in circuit connection with the power supply 12;
the oxygenator 10 is fixed on the oxygenator fixing seat 8, and the oxygenator fixing seat 8 is connected with the power circuit.
The touch screen 1 is fixed on the shell through the screen shaft 11, and the screen shaft 11 can rotate the touch screen 1 for an angle.
The power supply 12 is used for supplying power to the blood circulation system and can be externally connected with 220V household electricity.
As shown in fig. 5, a blood oxygen monitoring probe, a micro-plug/micro-bubble filter, a pressure sensor, a flow sensor, a driving circuit, a monitoring system, a protection system and a monitoring end are arranged inside the shell;
the blood inlet and the blood outlet are judged according to the actual condition of a doctor and the operation requirement, and the access positions are more. Generally, the human vein is the blood inlet, and the aorta is the blood outlet. The method is characterized in that the method is divided into artery and vein drainage according to different types of human outflow access blood vessels, and according to different positions of outflow access blood vessels, ascending aorta intubation, femoral artery intubation, left common carotid artery intubation, superior vena cava intubation, inferior vena cava intubation, pulmonary artery intubation, femoral vein intubation, left heart drainage and the like, one vein is selected as a blood inlet of an instrument, and an artery or vein matched with the vein is selected as a blood outlet of the instrument.
For example, blood is drawn from a human vein into an instrument, and is sent back from a human femoral artery sequentially through an instrument inlet (pipeline), a centrifugal pump, a pipeline (external sensor module), an oxygenator, a pipeline, a blood oxygen monitoring probe, a pipeline (external sensor module), a micro-suppository/micro-bubble filter and pipeline, a protection system and pipeline (zero flow, over-pressure protection), and an instrument outlet (pipeline).
The blood oxygen monitoring probe is used for monitoring blood oxygen and is provided with a blood oxygen monitoring probe for monitoring the proportion of the blood oxygen content in blood;
the micro-thrombus/micro-bubble filter is a micro-thrombus or micro-bubble filter and is used for filtering fine thrombus and air bubbles possibly formed due to improper operation of the pump or other reasons in blood;
the driving circuit is used for driving the centrifugal pump and controlling the rotating speed, flow rate, operation mode and the like of the centrifugal pump;
the monitoring system is mainly used for receiving signals sent by a pressure sensor and a flow sensor in a loop, carrying out integration processing and displaying the signals to the outside through the touch screen 1;
the protection system sends out an alarm when the monitoring system finds that abnormal parameters occur in the loop according to preset values and preset parameters, and simultaneously adjusts the mode of the centrifugal pump through the driving circuit to enable the centrifugal pump to be in a 0 flow state.
The pressure sensor is used for acquiring the pressure at the current position, and a pump output pressure test node is arranged behind the centrifugal pump to reflect the running state of the centrifugal pump in real time; the flow sensor displays the running state of the centrifugal pump;
the pressure and flow sensor behind the blood oxygen monitoring probe is the pressure and flow (resistance can be generated in the oxygenator, the pressure and the flow are reduced) after the pump passes through the oxygenation of the oxygenator, reflects the pressure and the current flow of blood sent back to the human body, and is used for adjusting the state of a doctor;
sensors are arranged behind the pump and the oxygenator for monitoring, so that the operation is intuitive, the state after operation can be confirmed, and if a fault occurs, the problem can be detected quickly;
the drive circuit can be divided into a base module and a control module, the interface of the base module is an alternating current input 220V and mainly comprises three parts: AC/DC module (switching power supply EPL225PS24), UPS (SITOP UPS1600), and battery (SITOP UPS 1100).
The AC/DC module mainly realizes the conversion work from alternating current 220V to direct current 24V, the converted 24V is output to the UPS, two batteries of direct current 24V are output to the UPS, and the UPS outputs uninterrupted direct current 19V power supply (about) to the control module after receiving the external 24V and the batteries of 24V.
The control module mainly comprises six components: DC/DC isolation conversion module (TEP), redundancy module (SITOP PSE202U), ohm dragon UPS (S8BA), PLC (CPU 1215C), screen (TP700 OUTDOR), motor driver board.
The DC/DC direct current isolation conversion module has the main functions that the voltage of 19V-24V output by the base is regulated to 24V output and output to the redundancy module PSE202U, then the redundancy module PSE202U outputs to the ohm dragon UPS which is provided with a battery module, therefore, when the controller is not connected with the base and no 24V direct current is input outside, the power supply work is undertaken, and the ohm dragon UPS outputs to the PLC, the screen and the motor driving board for power supply. The two UPS modules are connected with the PLC, and transmit the battery electric quantity signal to the PLC for planning the battery power supply.
PLC realizes multiple functions, if adjustable rotational speed output, adjustable flow type output, beat advection function, the survey of pressure and flow, the pressure alarm, liquid level alarm etc. for integrating diversified control and providing support, the single screen display has been realized with the design of integrating of control simultaneously, no longer need when medical personnel operate at each part value of many screen inspection, greatly reduced the error occurrence rate, improve work efficiency, reduce the work degree of difficulty, be favorable to medical personnel's quick adaptation.
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (4)
1. An extracorporeal life supports blood circulation device, includes the casing, its characterized in that: the surface of the shell is provided with a touch screen (1), an adjusting knob (2), a switch (3), a handle (4), a fixed seat (5), a bedside fixing frame (6), a centrifugal pump driving seat (7), an oxygenator fixed seat (8), a centrifugal pump (9), an oxygenator (10), a screen shaft (11) and a power supply (12);
the touch screen (1) is used for displaying the working information of the blood circulation system and touch screen control;
the adjusting knob (2) is used for adjusting the rotating speed of the centrifugal pump (9);
the switch (3) is used for a power switch of the blood circulation system;
the fixing seat (5) is annular, is horizontally fixed at the bottom of the shell and is used for stabilizing the whole device and preventing the equipment from being inclined when the blood circulation system is placed on a table top;
the bedside fixing frame (6) is annular, is fixed on the side surface of the shell and is used for fixing the blood circulation system at the bedside of a patient;
the centrifugal pump driving seat (7) and the oxygenator fixing seat (8) are arranged on the back or the top of the shell;
the centrifugal pump (9) is assembled on the centrifugal pump driving seat (7), the centrifugal pump (9) is in circuit connection with the centrifugal pump driving seat (7), and the centrifugal pump driving seat (7) is in circuit connection with the power supply (12);
the oxygenator (10) is fixed on the oxygenator fixing seat (8), and the oxygenator fixing seat (8) is connected with the power circuit;
the power supply (12) is used for supplying power to all parts of the blood circulation system;
a flow channel loop, a blood oxygen monitoring probe, a micro-bolt/micro-bubble filter, a pressure sensor, a flow sensor, a driving circuit, a monitoring system and a protection system are arranged in the shell;
blood enters from an inlet of the flow channel loop, the flow channel loop sequentially passes through a centrifugal pump (9), an oxygenator (10), a blood oxygen monitoring probe, a micro-suppository/micro-bubble filter and a protection system, and finally the blood flows out from an outlet of the flow channel loop and is sent back to a human body;
wherein a flow passage loop between the centrifugal pump (9) and the oxygenator (10) is provided with a pressure sensor and a flow sensor;
a flow channel loop between the micro-plug/micro-bubble filter and the protection system is provided with a pressure sensor and a flow sensor;
the blood oxygen monitoring probe is used for monitoring the proportion of the blood oxygen content in blood;
the micro-thrombus/micro-bubble filter is used for filtering fine thrombus and bubbles in blood in the flow channel;
the driving circuit is used for driving the centrifugal pump and controlling the rotating speed, flow and running mode of the centrifugal pump;
the monitoring system is used for receiving signals sent by a pressure sensor and a flow sensor in the runner loop, integrating and processing the signals and displaying the signals to the outside through the touch screen (1);
the protection system sends an alarm when the monitoring system finds that abnormal parameters occur in the runner loop according to preset values and preset parameters, and simultaneously adjusts the mode of the centrifugal pump through the driving circuit to enable the centrifugal pump to be at 0 flow.
2. An extracorporeal life support blood circulation apparatus according to claim 1, wherein: the drive circuit is divided into a base module and a control module, the interface of the base module is an alternating current input 220V and mainly comprises three parts: an AC/DC module, a UPS, and a battery;
the AC/DC module mainly realizes the conversion work from alternating current 220V to direct current 24V, the converted 24V is output to the UPS, two batteries of direct current 24V are output to the UPS, and the UPS outputs uninterrupted direct current 19V power to the control module after receiving external 24V and 24V batteries;
the control module mainly comprises six components: the system comprises a DC/DC isolation conversion module, a redundancy module, an ohm dragon UPS, a PLC, a touch screen and a motor drive board;
the DC/DC direct current isolation conversion module has the function of regulating the voltage of 19V-24V output by the base to 24V output and outputting the voltage to the redundancy module, and then outputting the voltage to the ohm dragon UPS which is provided with a battery module, so that when the controller is not connected with the base and 24V direct current input does not exist outside, the power supply work is undertaken, and the ohm dragon UPS outputs the voltage to the PLC, the screen and the motor driving board for power supply; the two ohm dragon UPS modules are connected with the PLC, and transmit the battery electric quantity signal to the PLC for planning the battery power supply;
the PLC is a programmable logic controller used for controlling the work of a centrifugal pump, an oxygenator, a touch screen, a blood oxygen monitoring probe, a micro-suppository/micro-bubble filter, a pressure sensor, a flow sensor, a driving circuit, a monitoring system and a protection system.
3. An extracorporeal life support blood circulation apparatus according to claim 1, wherein: the touch screen (1) is fixed on the shell through the screen shaft (11), and the screen shaft (11) can rotate the angle of the touch screen (1).
4. An extracorporeal life support blood circulation apparatus according to claim 1, wherein: the length, width and height of the shell are as follows: 290mm 260mm 160 mm.
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| CN202020326957.6U CN212490965U (en) | 2020-03-16 | 2020-03-16 | Extracorporeal life support blood circulation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111228598A (en) * | 2020-03-16 | 2020-06-05 | 美茵（北京）医疗器械研发有限公司 | Extracorporeal life support blood circulation device and flow channel design method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111228598A (en) * | 2020-03-16 | 2020-06-05 | 美茵（北京）医疗器械研发有限公司 | Extracorporeal life support blood circulation device and flow channel design method thereof |
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