CN-122006040-A - Air bag pressure control device, medical ventilation equipment and control method thereof

Abstract

The embodiment of the application discloses an air bag pressure control device, medical ventilation equipment and a control method thereof, wherein a user inflates or exhausts an air bag of an air pipe intubation through a pressure adjusting module of the air bag pressure control device in the process of connecting the medical ventilation equipment with the air pipe intubation to convey respiratory gas to the air pipe of a patient, so as to adjust the pressure of the air bag, and measures the pressure of the air bag through a pressure monitoring module, the pressure adjusting module is controlled by the control module to adjust the air bag at different pressures, meanwhile, the air leakage determined by the medical ventilation equipment under different air bag pressures is obtained, and then the pressure of the air bag can be adjusted according to the target pressure after the target pressure is determined, so that the air bag pressure can be automatically adjusted to adapt to physiological differences of different patients, and more accurate, real-time and personalized air bag pressure management is realized.

Inventors

• LI XIANG
• LIU JINGLEI
• ZHOU XIAOYONG
• Nan Zhibai
• YANG YIFAN

Assignees

• 深圳迈瑞生物医疗电子股份有限公司

Dates

Publication Date

20260512

Application Date

20241112

Claims (20)

1. 1. An airbag pressure control apparatus, comprising: The pressure adjusting module is used for inflating or exhausting an air bag of the trachea cannula so as to adjust the pressure of the air bag, wherein the trachea cannula is connected with the medical ventilation equipment to convey respiratory gas to the trachea of a patient; a pressure monitoring module for measuring the pressure of the air bag; The control module is used for controlling the pressure adjusting module to adjust the air bags sequentially at different first pressures; Acquiring air leakage amounts of the medical ventilation devices respectively determined by the medical ventilation devices under different first pressures, wherein one first pressure corresponds to one air leakage amount; And determining the target pressure of the air bag according to the change condition of the at least two air leakage amounts, and controlling the pressure regulating module to regulate the pressure of the air bag according to the target pressure.
2. 2. The airbag pressure control apparatus according to claim 1, wherein the determining the target pressure of the airbag according to the change in the at least two air leakage amounts, controlling the pressure adjusting module to adjust the pressure of the airbag according to the target pressure, comprises: The control module is used for judging whether the air bag leaks or not according to the change condition of the at least two air leakage amounts; The control module is also used for increasing the first pressure to obtain target pressure after the air bag leaks, and controlling the pressure regulating module to regulate the pressure of the air bag according to the target pressure; the control module is also used for reducing the first pressure to obtain target pressure after the air bag is not leaked, and controlling the pressure regulating module to regulate the pressure of the air bag according to the target pressure.
3. 3. The airbag pressure control apparatus of claim 2, wherein the control module is configured to determine whether the airbag leaks according to a change in the at least two air leakage amounts, comprising: Comparing the air leakage corresponding to the current first pressure with the air leakage corresponding to the previous N first pressures to obtain the air leakage variation of the current first pressure; if the air leakage variation is larger than a first preset variation threshold or exceeds a first preset variation range, determining that the air bag leaks; if the air leakage variation is smaller than the first preset variation threshold or falls into the first preset variation range, determining that the air bag is not leaked; and the current first pressure is greater than the first N pressures, N is an integer greater than or equal to 1, and the air leakage change amount is positively correlated with the air leakage degree of the air bag.
4. 4. The airbag pressure control apparatus according to claim 2, wherein, The control module is also used for increasing the first pressure to obtain target pressure after the air bag leaks, controlling the pressure regulating module to regulate the pressure of the air bag according to the target pressure, continuously judging whether the air bag leaks according to the new change condition of at least two air leakage amounts, and/or, The control module is further used for reducing the first pressure to obtain target pressure after the air bag is not leaked, and continuously judging whether the air bag is leaked or not according to the new change condition of at least two air leakage amounts after the pressure adjusting module is controlled to adjust the pressure of the air bag according to the target pressure.
5. 5. The airbag pressure control apparatus of claim 1, wherein the control module is configured to determine a target pressure of the airbag based on a change in the at least two air leaks, comprising: the control module is used for comparing the leakage change amount between at least two first pressures in different first pressures, determining at least one first pressure meeting a first condition, and determining the target pressure according to the at least one first pressure meeting the first condition, wherein the first condition comprises that the leakage change amount is smaller than a first preset change amount threshold value or is in a first preset change amount range.
6. 6. The airbag pressure control apparatus of claim 5, wherein the control module determining the target pressure based on at least one first pressure satisfying a first condition comprises: Determining the first pressure with the minimum air leakage as the target pressure in at least one first pressure meeting the first condition, or Determining the first pressure with the smallest variation of the air leakage amount as the target pressure in at least one first pressure meeting the first condition, or Determining the smallest first pressure as the target pressure among at least one first pressure satisfying the first condition, or Determining the first pressure at which the leak variation amount steadily changes as the target pressure among at least one of the first pressures satisfying the first condition, or Determining an average value of all or part of the first pressure satisfying the first condition as the target pressure, or A pressure fine adjustment range is determined from at least one of the first pressures satisfying the first condition, and one of the pressures in the pressure fine adjustment range is determined as the target pressure.
7. 7. The balloon pressure control device of claim 1, wherein an initial one of the different first pressures is an airway peak pressure of the medical ventilator; the control unit is further used for increasing the first pressure to update the first pressure and controlling the pressure adjusting module to adjust the pressure of the air bag according to the updated first pressure, and/or, The control unit is also used for reducing the first pressure to update the first pressure and controlling the pressure adjusting module to adjust the pressure of the air bag according to the updated first pressure.
8. 8. The airbag pressure control apparatus of claim 2 or 7, further comprising an alarm module; The control module is also used for controlling the alarm module to alarm if the first pressure is larger than or equal to the upper limit value of pressure regulation after the first pressure is increased, controlling the pressure regulation module to regulate the pressure of the air bag according to the increased pressure if the first pressure is smaller than the upper limit value of pressure regulation, and/or, The control module is also used for controlling the alarm module to alarm after the first pressure is reduced, if the first pressure is smaller than or equal to the pressure regulation lower limit value, and controlling the pressure regulation module to regulate the pressure of the air bag according to the reduced pressure if the first pressure is larger than the pressure regulation lower limit value.
9. 9. The airbag pressure control apparatus of claim 8, wherein, The control module is further used for controlling the pressure regulating module to maintain the pressure unchanged under the condition that the first pressure adopted by the pressure regulating module is larger than or equal to the pressure regulating upper limit value, and carrying out first alarm prompt through the alarm module, wherein the first alarm prompt represents that the medical ventilation equipment has other types of air leakage except air bag air leakage.
10. 10. The airbag pressure control apparatus of claim 4 or 7, wherein the control module increasing the first pressure comprises the control module increasing the first pressure in a first step, wherein the first step is a preset fixed step, or determining a number of consecutive increases of the first pressure, determining a size of the first step according to the number of consecutive increases, and the more the number of consecutive increases, the smaller the first step; And/or the number of the groups of groups, The control module is used for reducing the first pressure with a second step length, wherein the second step length is a preset fixed step length, or the continuous reduction times of the current first pressure are determined, the size of the second step length is determined according to the continuous reduction times, and the more the continuous reduction times are, the smaller the second step length is.
11. 11. The airbag pressure control apparatus of any one of claims 1 to 7, 9, wherein the control module is further configured to control the pressure adjustment module to adjust the airbag sequentially at different first pressures, comprising: The control module is further used for judging whether the medical ventilation equipment meets a preset air leakage standard according to parameters of the medical ventilation equipment in a first operation state or the air leakage amount of the medical ventilation equipment; and if the air leakage exceeds the preset air leakage standard, controlling the pressure regulating module to regulate the air bag sequentially at different first pressures, wherein the first operation state is that an air suction valve and an air exhalation valve of the medical ventilation equipment are in a closed state.
12. 12. The balloon pressure control device of claim 11, wherein the medical ventilation apparatus comprises a respiratory monitoring module, the control module configured to obtain respiratory parameters of the patient via the respiratory monitoring module; the control module judges whether the medical ventilation equipment meets a preset air leakage standard according to the parameters of the medical ventilation equipment in a first running state, and the control module comprises the following steps: The control module is used for acquiring the airway pressure of the patient when the medical ventilation equipment is in the first running state through the respiration monitoring module, and judging whether the medical ventilation equipment accords with the preset air leakage standard according to a comparison result of the airway pressure and a preset airway pressure threshold value.
13. 13. The balloon pressure control device of claim 11, wherein the medical ventilation apparatus comprises a respiratory monitoring module, the control module configured to obtain respiratory parameters of the patient via the respiratory monitoring module; the control module judges whether the medical ventilation equipment meets a preset air leakage standard according to the air leakage amount of the medical ventilation equipment, and comprises the following steps: The control module is used for acquiring the respiratory parameters of the patient through the respiratory monitoring module, inputting the respiratory parameters into a leakage model for prediction processing to obtain leakage flow rate in unit time, and obtaining the air leakage amount of the medical ventilation equipment in a preset time period by accumulating the leakage flow rate in the preset time period, and judging whether the medical ventilation equipment meets a preset air leakage standard according to the air leakage amount, or The respiratory parameters comprise inspiration tidal volume and expiration tidal volume, the control module is used for obtaining the ventilation volume in a respiratory cycle according to the inspiration tidal volume and the expiration tidal volume, and judging whether the medical ventilation equipment meets a preset air leakage standard according to the ventilation volume.
14. 14. The airbag pressure control apparatus of claim 11, wherein the respiratory monitoring module includes flow rate sensors disposed at an inspiratory end and an expiratory end of the medical ventilator, respectively, and wherein the control module is further configured to determine whether the medical ventilator meets a preset air leakage criterion based on the air leakage of the medical ventilator, comprising: The control module is used for acquiring a first flow rate parameter of the inspiration end and a second flow rate parameter of the expiration end through flow rate sensors of the inspiration end and the expiration end of the medical ventilation equipment, and acquiring an air leakage parameter of the medical ventilation equipment according to the second flow rate parameter and the first flow rate parameter, wherein the air leakage parameter comprises at least one of air leakage, minute air leakage and minute air leakage proportion of each respiratory cycle; judging whether the medical ventilation equipment meets a preset air leakage standard according to the air leakage parameters of the medical ventilation equipment.
15. 15. An airbag air leakage judging device, characterized by comprising: The pressure adjusting module is used for inflating or exhausting an air bag of the trachea cannula so as to adjust the pressure of the air bag, wherein the trachea cannula is connected with the medical ventilation equipment to convey respiratory gas to the trachea of a patient; a pressure monitoring module for measuring the pressure of the air bag; The control module is used for controlling the pressure adjusting module to adjust the air bags sequentially at different first pressures; Acquiring air leakage amounts of the medical ventilation devices respectively determined by the medical ventilation devices under different first pressures, wherein one first pressure corresponds to one air leakage amount; Judging whether the air bag leaks or not according to the change condition of the at least two air leakage amounts.
16. 16. A medical ventilation device, comprising: A breathing circuit for communicating with the endotracheal tube for providing a passageway for the patient to inhale and exhale gases; a respiratory module for providing mechanical ventilation to a patient, the respiratory module being connected to the respiratory tubing; A respiration monitoring module for monitoring a respiration parameter of the patient; The pressure adjusting module is used for inflating or exhausting an air bag of the trachea cannula so as to adjust the pressure of the air bag, wherein the trachea cannula is connected with the medical ventilation equipment to convey respiratory gas to the trachea of a patient; a pressure monitoring module for measuring the pressure of the air bag; The control module is used for controlling the pressure adjusting module to adjust the air bags sequentially at different first pressures; Acquiring the breathing parameters under different first pressures, and determining the air leakage amount of the medical ventilation equipment under the first pressures according to the breathing parameters, wherein one first pressure corresponds to one air leakage amount; And determining the target pressure of the air bag according to the change condition of the at least two air leakage amounts, and controlling the pressure regulating module to regulate the pressure of the air bag according to the target pressure.
17. 17. A medical ventilation device, comprising: A breathing circuit for communicating with the endotracheal tube for providing a passageway for the patient to inhale and exhale gases; a respiratory module for providing mechanical ventilation to a patient, the respiratory module being connected to the respiratory tubing; A respiration monitoring module for monitoring a respiration parameter of the patient; The control module is connected with a balloon pressure control device, and the balloon pressure control device is used for controlling the pressure of a balloon arranged in the airway of the patient; The control module is used for controlling the air bag pressure control device to adjust the air bag at different first pressures in sequence; Acquiring the breathing parameters under different first pressures, and determining the air leakage amount of the medical ventilation equipment under the first pressures according to the breathing parameters, wherein one first pressure corresponds to one air leakage amount; Judging whether the air bag leaks or not according to the change condition of the at least two air leakage amounts.
18. 18. A method of controlling the pressure of an airbag, comprising: The control pressure adjusting module sequentially adjusts the air bags at different first pressures; acquiring air leakage amounts of the medical ventilation devices respectively determined by the medical ventilation devices under different first pressures, wherein one first pressure corresponds to one air leakage amount; And determining the target pressure of the air bag according to the change condition of the at least two air leakage amounts, and controlling the pressure regulating module to regulate the pressure of the air bag according to the target pressure.
19. 19. An airbag air leakage judging method, characterized by comprising: the control pressure adjusting module sequentially adjusts the air bags at different first pressures; Acquiring air leakage amounts of the medical ventilation devices respectively determined by the medical ventilation devices under different first pressures, wherein one first pressure corresponds to one air leakage amount; Judging whether the air bag leaks or not according to the change condition of the at least two air leakage amounts.
20. 20. A control device comprising a memory storing a computer program and a processor that executes the computer program to perform the airbag pressure control method according to claim 18 or the airbag leakage determination method according to claim 19.

Description

Air bag pressure control device, medical ventilation equipment and control method thereof Technical Field The application relates to the technical field of medical equipment, in particular to an air bag pressure control device, medical ventilation equipment and a control method thereof. Background In the medical field, especially in intensive care and surgical procedures, medical ventilation devices are used as important devices for maintaining the life of a patient, wherein in the process of using the medical ventilation device, an endotracheal tube, also called an endotracheal tube, is usually used, and an endotracheal tube is inserted into an trachea through an upper respiratory tract (oral cavity, nasal cavity, tracheostomy opening) to ensure the smooth respiratory tract, ventilation and oxygen supply, respiratory tract suction, and medical operation of respiratory tract administration. The conventional trachea cannula comprises a catheter, an inflatable and deflatable air bag and an inflation tube, wherein the inflated air bag can provide sealing for the inner wall of the trachea, and plays roles in fixing the trachea, preventing air leakage and preventing oral secretion from flowing into the trachea to cause aspiration pneumonia, so that the tightness of the air bag is important for guaranteeing effective ventilation. However, due to individual differences of patients, the appropriate balloon pressures are not the same for each individual, and the patient is injured by the excessive or insufficient balloon pressure. On the one hand, when the pressure of the air bag is too high, the contact part is pressed, so that partial blood supply is insufficient, the tracheal cartilage ring is damaged, the mucous membrane is ulcerated, and the like, on the other hand, if the pressure of the air bag is too low, the air bag cannot be tightly attached to the inner wall of the trachea, gas can leak, secretion on the air bag can be inhaled into the lung by mistake, and the risk of the patient suffering from ventilator-associated pneumonia (VAP) is increased. However, in the prior art, the control of the air sac pressure mainly depends on manual adjustment, and lacks of accuracy and instantaneity, so that the air sac pressure is easy to cause air leakage caused by air pipe damage due to over-high pressure or air leakage caused by over-low pressure, and the treatment effect is affected. Although there is also an automatic air bag management module at present, which can automatically monitor and maintain an air bag pressure level in real time according to the air bag pressure level set by a doctor, so as to realize the functions of automatic inflation and deflation of the air bag and automatic pressure maintenance, the air bag pressure required by each person is not fixed due to the difference of the physiological structures of the air passages, so that the automatic modules still cannot adapt to the individual difference of patients to set proper air bag pressure. Disclosure of Invention The following is a summary of the subject matter of the detailed description of the application. This summary is not intended to limit the scope of the claims. The embodiment of the application provides an air bag pressure control device, medical ventilation equipment and a control method thereof, which can automatically adjust the air bag pressure to adapt to physiological differences of different patients and realize more accurate, real-time and personalized air bag pressure management. In a first aspect, an embodiment of the present application provides an airbag pressure control apparatus, including: The pressure adjusting module is used for inflating or exhausting an air bag of the trachea cannula so as to adjust the pressure of the air bag, wherein the trachea cannula is connected with the medical ventilation equipment to convey respiratory gas to the trachea of a patient; a pressure monitoring module for measuring the pressure of the air bag; The control module is used for controlling the pressure adjusting module to adjust the air bags sequentially at different first pressures; Acquiring air leakage amounts of the medical ventilation devices respectively determined by the medical ventilation devices under different first pressures, wherein one first pressure corresponds to one air leakage amount; And determining the target pressure of the air bag according to the change condition of the at least two air leakage amounts, and controlling the pressure regulating module to regulate the pressure of the air bag according to the target pressure. In a second aspect, an embodiment of the present application provides an air bag leakage judging device, including: The pressure adjusting module is used for inflating or exhausting an air bag of the trachea cannula so as to adjust the pressure of the air bag, wherein the trachea cannula is connected with the medical ventilation equipment to convey respiratory gas to the trachea of a patient; a