CN-121971760-A - Anesthesia workstation for mechanical ventilation

CN121971760ACN 121971760 ACN121971760 ACN 121971760ACN-121971760-A

Abstract

Embodiments of the present disclosure provide an anesthesia workstation for mechanical ventilation, comprising an automatic control module, an anesthesia ventilator module, a host computer module, and a monitor module, wherein the automatic control module is configured to receive patient information and receive ventilation operating parameters and physiological monitoring data in real time, determine whether at least one of trigger conditions for initiating a lung re-tension and a PEEP titration is met, determine a current patient status according to the patient information and/or the physiological monitoring data, and select a corresponding set of PEEP level values from a preset set of PEEP level parameters according to the current patient status for the anesthesia ventilator module to perform the PEEP titration operation when the PEEP titration operation is initiated. The anesthesia workstation disclosed by the disclosure has the functions of multiple automatic regulation and control, integrates the real-time feedback of multidimensional physiological indexes, and forms a full-flow automatic regulation closed loop.

Inventors

HUA WEI
WANG LIHUA
CHEN GENG

Assignees

北京瑞承天启医疗科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260312

Claims (10)

1. An anesthesia workstation for mechanical ventilation is characterized by comprising an automatic control module, an anesthesia respirator module, an upper computer module and a monitor module, wherein, The monitor module is configured to acquire a portion of physiological monitoring data of a patient in real-time; The anesthesia ventilator module is configured to perform mechanical ventilation according to the set ventilation setting parameters and to acquire ventilation operating parameters and at least one of the physiological monitoring data in real time; the upper computer module is configured to input patient information and display one or more of the physiological monitoring data, ventilation operating parameters, ventilation setting parameters, and alarm information; the automatic control module is respectively in communication connection with the anesthesia respirator module, the monitor module and the upper computer module and is configured to Patient information is received and ventilation operating parameters and physiological monitoring data are received in real time, Determining whether at least one of trigger conditions for initiating a pulmonary re-tension and PEEP titration is met, Determining a current patient state based on the patient information and/or the physiological monitoring data, When the PEEP titration operation is started, a corresponding group of PEEP level values is selected from a preset PEEP level parameter group according to the current patient state so as to be used for the anesthesia respirator module to execute the PEEP titration operation, Wherein the set of preset PEEP level parameters comprises a plurality of sets of PEEP level values corresponding to different patient states respectively.
2. The anesthesia workstation for mechanical ventilation according to claim 1 wherein the triggering condition for initiating pulmonary re-tension and PEEP titration comprises a first predetermined time period after initiation of mechanical ventilation, a lung compliance change exceeding a predetermined change value, blood oxygen saturation falling below a first threshold of blood oxygen saturation, a second predetermined time period after airway pressure has been zeroed.
3. The anesthesia workstation for mechanical ventilation of claim 1 wherein the automatic control module is configured to preset a normal range of end tidal carbon dioxide, automatically increment a respiratory rate to adjust the end tidal carbon dioxide when the end tidal carbon dioxide is above an upper limit of the normal range, automatically increment a tidal volume setting to adjust the end tidal carbon dioxide when a predetermined maximum respiratory rate is reached and the end tidal carbon dioxide is still above an upper limit of the normal range until the end tidal carbon dioxide is in the normal range or the tidal volume reaches an upper tidal volume limit, automatically decrement the respiratory rate to adjust the end tidal carbon dioxide when the end tidal carbon dioxide is below a lower limit of the normal range, automatically decrement a tidal volume setting to adjust the end tidal carbon dioxide when a predetermined minimum respiratory rate is reached and the end tidal carbon dioxide is still below a lower limit of the normal range until the end tidal carbon dioxide is in the normal range or the tidal volume reaches a lower limit.
4. The anesthesia workstation for mechanical ventilation according to claim 1 wherein the automatic control module is configured to preset a first and a second threshold of blood oxygen saturation, the second threshold of blood oxygen saturation being lower than the first threshold, the automatic control module generating a prompt to perform lung re-tensioning and PEEP titration when the patient's blood oxygen saturation is lower than the first threshold, the automatic control module controlling the anesthesia ventilator module to gradually increase the inhaled oxygen concentration to increase the blood oxygen saturation when the patient's blood oxygen saturation is lower than the second threshold.
5. The anesthesia workstation for mechanical ventilation according to claim 1 wherein the automatic control module is configured to set a preset set of pulmonary multiplex pressure and PEEP level parameters, wherein each PEEP level value corresponds to one pulmonary multiplex pressure value, and upon activation of pulmonary multiplex Zhang Liucheng, the automatic control module determines a maximum airway pressure based on the patient's BMI value and the abdominal state, and increases the airway pressure step by step based on the preset set of pulmonary multiplex pressure and PEEP level parameters to control the anesthesia ventilator module to ventilate, each level of airway pressure maintaining a plurality of respiratory cycles until the maximum airway pressure is increased.
6. The anesthesia workstation for mechanical ventilation according to claim 1 or 5 wherein the patient status comprises a BMI value, a pneumoperitoneum status and a posture of the patient, the automatic control module being configured to select a set of PEEP level values from the preset PEEP level parameter set for PEEP titration in accordance with the BMI value, pneumoperitoneum status and posture of the patient upon execution of the PEEP titration after execution of the pulmonary doublet.
7. The anesthesia workstation for mechanical ventilation according to claim 6 wherein the automated control module is configured to control the anesthesia ventilator module to perform PEEP titration in such a manner that a maximum PEEP level value in the set of PEEP level values is stepped down to a minimum PEEP level value, each PEEP level value maintaining a plurality of respiratory cycles, recording a lung compliance average for a last predetermined number of respiratory cycles for each PEEP level value, and selecting the PEEP level value corresponding to the highest lung compliance average as the patient's optimal PEEP level.
8. The anesthesia workstation for mechanical ventilation according to claim 1 wherein the automatic control module or the upper computer module is configured to include a parameter setting and calculating unit that calculates a predicted weight from the height and sex of the patient, calculates an initial tidal volume from the predicted weight and sets at least one of an initial respiratory rate, an inhalation-to-exhalation ratio, a positive end-expiratory pressure and an inhalation oxygen concentration from the BMI value and the pulmonary function status of the patient.
9. The anesthesia workstation for mechanical ventilation according to claim 1 wherein the alarm information is displayed when the systolic pressure is below a preset safety threshold or the inhaled oxygen concentration exceeds a preset upper limit, the automatic control module automatically stopping or prompting stopping of the current operation when systolic pressure is below a preset safety threshold during the lung re-tensioning and PEEP titration.
10. An anesthesia workstation for mechanical ventilation according to claim 3 wherein the higher the predicted body weight of the patient the higher the upper and/or lower limit of the tidal volume is set.

Description

Anesthesia workstation for mechanical ventilation Technical Field The present disclosure relates to the field of mechanical ventilation, and in particular, to an anesthesia workstation for mechanical ventilation. Background In existing anesthesia machines, the control of mechanical ventilation is dependent on manual operation, parameter settings are manually calculated from experience by medical personnel, and feedback adjustment of monitoring indicators is delayed. Due to lack of standardized fully automatic feedback logic, parameter adjustment is difficult to match the physiological state of a patient (such as end-tidal carbon dioxide, dynamic changes in blood oxygen saturation, etc.) in real time, which may lead to insufficient ventilation efficiency, increased risk of lung injury, or impaired circulatory stability. Meanwhile, the triggering time and execution flow of key operations such as lung re-tension and PEEP titration are not uniform, the consistency and safety of the treatment effect are further affected, and the operation burden of medical staff is increased. Therefore, there is a need for an anesthesia workstation that can be automatically feedback controlled to improve the accuracy and safety of ventilation management. Disclosure of Invention Based on the shortcomings of the prior art, the present disclosure provides an anesthesia workstation for mechanical ventilation. According to an aspect of the disclosure, an anesthesia workstation for mechanical ventilation is provided, comprising an automatic control module, an anesthesia ventilator module, an upper computer module and a monitor module, wherein the monitor module is configured to acquire a part of a plurality of physiological monitoring data of a patient in real time, the anesthesia ventilator module is configured to perform mechanical ventilation according to set ventilation setting parameters and acquire ventilation operation parameters and at least one physiological monitoring data in real time, the upper computer module is configured to input patient information and display one or more of the physiological monitoring data, ventilation operation parameters, ventilation setting parameters and alarm information, the automatic control module is in communication connection with the anesthesia ventilator module, the monitor module and the upper computer module respectively, is configured to receive patient information and receive ventilation operation parameters and physiological monitoring data in real time, determine whether at least one of trigger conditions for starting pulmonary tension and PEEP titration is met, determine a current patient state according to the patient information and/or the physiological monitoring data, and when PEEP titration operation is started, the PEEP level is not set to correspond to a set of PEEP level corresponding to a preset set of PEEP values from the patient state. In the disclosed embodiments, the patient information may include information of age, gender, height, weight, underlying disease, etc., and the patient status refers to physical indicators related to mechanical ventilation and current physical conditions, more particularly may be patient current status information for determining a lung re-tensioning strategy or PEEP titration strategy, may include one or more of a patient's BMI value, pneumoperitoneum status, and posture. The ventilation operating parameters are state data related to the mechanical ventilation process, which may typically be collected by an anesthesia ventilator, optionally including one or more of positive end expiratory pressure, tidal volume, airway pressure, inhaled oxygen concentration, inhalation to exhalation ratio, and the like. Physiological monitoring data refers to data obtained by monitoring the physiological state of a patient's body, which may optionally include one or more of heart rate, lung compliance, end tidal carbon dioxide (EtCO 2), blood pressure, and blood oxygen saturation (SpO 2), among others. The ventilation setting parameters refer to parameters for controlling the ventilation behavior of the anesthesia respirator, which may include, for example, one or more of tidal volume, respiratory rate, inhalation ratio, positive end expiratory pressure, inhalation oxygen concentration, inhalation time, etc. The physiological monitoring data and ventilation operating parameters can be acquired by different modules respectively, or can be acquired by different sensors or processing units in the same module respectively. The anesthesia workstation can also comprise a power module which is used for providing stable power supply for each module of the anesthesia workstation, supporting the switching of a main power supply and a standby power supply and ensuring the continuous operation of equipment. The power module may also be controlled by an automatic control module. The anesthesia workstation realizes real-time linkage of modules such as an anesthesia res