CN-117065123-B - External membrane pulmonary oxygenation system and control method

CN117065123BCN 117065123 BCN117065123 BCN 117065123BCN-117065123-B

Abstract

The application provides an extracorporeal membrane oxygenation system and a control method, which can be used in the field of medical appliances. In the system, a blood pump in an extracorporeal membrane lung oxygenation system is connected with an oxygenator, a gas temperature and humidity adjusting unit is arranged in a connecting path between the oxygenator and gas source equipment, the gas temperature and humidity adjusting unit is used for adjusting the temperature and humidity of gas flowing into the oxygenator, a control device in the extracorporeal membrane lung oxygenation system is respectively connected with the blood pump and the gas temperature and humidity adjusting unit, and the control device determines working parameter data corresponding to the gas temperature and humidity adjusting unit according to the operating parameter data of the extracorporeal membrane lung oxygenation device, so that the gas can work according to the working parameter data to reach target temperature and humidity. According to the scheme, the temperature and humidity regulation unit is controlled to work so that the gas reaches the target temperature and humidity, the temperature and humidity regulation is carried out on the gas flowing into the oxygenator, and the water loss of blood in the extracorporeal circulation loop can be reduced.

Inventors

ZHU YUXIN
LIU MENGJIE
Hua Xuhui

Assignees

心擎医疗（苏州）股份有限公司

Dates

Publication Date: 20260512
Application Date: 20230829

Claims (16)

1. An extracorporeal membrane lung oxygenation system is characterized by comprising an oxygenator, a blood pump, a gas temperature and humidity adjusting unit, gas source equipment and control equipment; the blood pump is connected with the oxygenator, and the blood pump and the oxygenator are connected with a target object to form a circulation loop; The gas temperature and humidity adjusting unit is arranged in a connecting path between the oxygenator and the gas source equipment and is used for adjusting the temperature and humidity of the gas flowing into the oxygenator; The control equipment is respectively connected with the blood pump and the gas temperature and humidity adjusting unit; The control equipment is used for controlling the gas temperature and humidity adjusting unit to work so as to enable the gas to reach a target temperature and humidity, the target temperature and humidity corresponds to operation parameter data of the extracorporeal membrane pulmonary oxygenation system, the operation parameter data comprise at least one of air flow data and blood flow data, and the target temperature and humidity is a temperature and humidity target value corresponding to the operation parameter data.
2. The extracorporeal membrane oxygenation system of claim 1, wherein the gas temperature and humidity regulation unit comprises a gas washing device and a first temperature control device; The gas outlet of the gas source equipment is connected with the gas inlet of the gas washing device, the gas outlet of the gas washing device is connected with the gas inlet of the oxygenator, and a preset liquid is stored in the gas washing device and is used for humidifying the gas entering the gas washing device; the gas washing device is arranged in the accommodating cavity of the first temperature control device, and the first temperature control device is used for regulating and controlling the temperature of the preset liquid.
3. The extracorporeal membrane oxygenation system of claim 2, wherein the gas washing apparatus further comprises a liquid delivery interface, the gas temperature and humidity adjustment unit further comprising a first infusion assembly coupled to the liquid delivery interface, the first infusion assembly configured to supplement or withdraw the predetermined liquid.
4. The extracorporeal membrane oxygenation system of claim 1, wherein the target subject comprises a blood storage device, the extracorporeal membrane oxygenation system further comprising a second temperature control device comprising a temperature-controlled housing cavity for housing the blood storage device, the second temperature control device for controlling a temperature of blood in the blood storage device.
5. The extracorporeal membrane oxygenation system of claim 4, wherein the blood storage device comprises a fluid bag, and further comprising a container corresponding to the fluid bag, wherein the fluid bag is placed in the fluid contained in the container, and the container is provided with a fluid level scale for indicating the change of the volume of the fluid in the fluid bag.
6. The extracorporeal membrane oxygenation system of claim 5, further comprising a liquid level detection unit for detecting a level of liquid in the container.
7. The extracorporeal membrane oxygenation system of any of claims 1-6, further comprising a second infusion assembly for delivering a liquid to the target subject.
8. The extracorporeal membrane lung oxygenation system of claim 7, wherein the control apparatus is configured to control operation of the second infusion assembly to deliver fluid to the target subject.
9. A control device for an extracorporeal membrane lung oxygenation system, characterized by being installed in an extracorporeal membrane lung oxygenation system according to any of claims 1 to 8, the device comprising: the acquisition module is used for acquiring the operation parameter data of the extracorporeal membrane pulmonary oxygenation system; The processing module is used for determining the working parameter data corresponding to the gas temperature and humidity adjusting unit according to the operating parameter data; And the control module is used for controlling the gas temperature and humidity adjusting unit to work based on the working parameter data so as to enable the gas to reach the target temperature and humidity, and the target temperature and humidity corresponds to the operating parameter data.
10. The apparatus of claim 9, wherein the airflow volume data comprises at least one of airflow volume detection data, airflow volume related data, the airflow volume related data being used to characterize the flow volume of the gas.
11. The apparatus of claim 10, wherein the air supply device comprises an air flow rate adjustment unit, and wherein the air flow rate related data comprises operational parameter data corresponding to the air flow rate adjustment unit.
12. The apparatus of claim 9, wherein the blood flow data comprises at least one of blood flow detection data, blood flow correlation data, the blood flow correlation data being used to characterize blood flow in the circulatory loop.
13. The apparatus of claim 12, wherein the blood flow related data comprises at least one of blood pump rotational speed, blood pump current value, blood pump differential pressure data.
14. The apparatus of claim 9, wherein the device comprises a plurality of sensors, The acquisition module is also used for acquiring temperature data of the gas flowing into the oxygenator; The device also comprises an output module, wherein the output module is used for outputting gas temperature alarm information if the temperature data of the gas is out of a preset temperature range.
15. The apparatus of claim 14, wherein the device comprises a plurality of sensors, The acquisition module is also used for acquiring humidity data of the gas flowing into the oxygenator; the output module is further configured to output preset alarm information if the humidity data is outside a target humidity range, where the preset alarm information is used to indicate a dehydration risk or gas humidity abnormality of the target object.
16. The apparatus of claim 9, wherein the obtaining module is further configured to obtain a patient treatment policy corresponding to the control device; The processing module is specifically configured to determine working parameter data corresponding to the gas temperature and humidity adjustment unit according to the operating parameter data and the patient treatment policy, where the target temperature and humidity is a temperature and humidity target value corresponding to the operating parameter data under the patient treatment policy.

Description

External membrane pulmonary oxygenation system and control method Technical Field The application relates to the field of medical equipment, in particular to an extracorporeal membrane lung oxygenation system and a control method. Background The extracorporeal membrane oxygenation (Extracorporeal Membrane Oxygenation, ECMO) device is used for providing continuous extracorporeal respiration and circulation for patients suffering from severe cardiopulmonary failure, can temporarily replace the cardiopulmonary function of the patients, and reduces the cardiopulmonary burden of the patients. In the prior art, the ECMO device works by pumping blood from a target object, such as a patient or a blood bag, to an oxygenator, and re-infusing the blood back to the patient or the blood bag after the blood is oxygenated by the oxygenator, so as to maintain the oxygen content of the blood. During the use process of the ECMO device, gas is input into the ECMO device by a gas source, so that the oxygenation of blood is realized. However, when the extracorporeal membrane oxygenation device is used in different situations, the operation parameter data of the extracorporeal membrane oxygenation device are different, and for some special situations, such as high gas flow, the gas in the oxygenator can take away the moisture in the blood when exchanging with the blood, so that the moisture in the blood is lost. Disclosure of Invention The embodiment of the application provides an extracorporeal membrane lung oxygenation system and a control method, which are used for solving the urgent need of the extracorporeal membrane lung oxygenation system and the control method, and can reduce the water loss of blood in an extracorporeal circulation loop in the use process of extracorporeal membrane lung oxygenation equipment. In a first aspect, an embodiment of the present application provides an extracorporeal membrane lung oxygenation system, which includes an oxygenator, a blood pump, a gas temperature and humidity adjustment unit, a gas source device, and a control device; the blood pump is connected with the oxygenator, and the blood pump and the oxygenator are connected with a target object to form a circulation loop; The gas temperature and humidity adjusting unit is arranged in a connecting path between the oxygenator and the gas source equipment and is used for adjusting the temperature and humidity of the gas flowing into the oxygenator; The control equipment is respectively connected with the blood pump and the gas temperature and humidity adjusting unit; The control equipment is used for controlling the gas temperature and humidity adjusting unit to work so as to enable the gas to reach the target temperature and humidity, and the target temperature and humidity corresponds to the operation parameter data of the extracorporeal membrane pulmonary oxygenation system. The external membrane lung oxygenation system has the advantages that a blood pump in the external membrane lung oxygenation system is connected with an oxygenator, a gas temperature and humidity adjusting unit is arranged in a connecting path between the oxygenator and an air source device and used for adjusting the temperature and humidity of gas flowing into the oxygenator, a control device is respectively connected with the blood pump and the gas temperature and humidity adjusting unit, and the control device controls the gas temperature and humidity adjusting unit to work so that the gas reaches a target temperature and humidity, and the target temperature and humidity correspond to operation parameter data of the external membrane lung oxygenation system. According to the scheme, the temperature and humidity regulation unit is controlled to work so that the gas reaches the target temperature and humidity, the temperature and humidity regulation is carried out on the gas flowing into the oxygenator, and the water loss of blood in the extracorporeal circulation loop can be reduced. In one specific embodiment, the gas temperature and humidity regulating unit comprises a gas washing device and a first temperature control device; The gas outlet of the gas source equipment is connected with the gas inlet of the gas washing device, the gas outlet of the gas washing device is connected with the gas inlet of the oxygenator, and a preset liquid is stored in the gas washing device and is used for humidifying the gas entering the gas washing device; the gas washing device is arranged in the accommodating cavity of the first temperature control device, and the second temperature control device is used for regulating and controlling the temperature of the preset liquid. The gas temperature and humidity adjusting device has the beneficial effects that the temperature and humidity of the gas flowing into the oxygenator are adjusted through the gas washing device and the first temperature control device, and the temperature and humidity of the gas can be effectively and timel