Intelligent pneumoperitoneum machine capable of removing smoke and having constant pressure

Abstract

The invention discloses an intelligent pneumoperitoneum machine capable of removing smoke and having constant pressure, and relates to the technical field of medical equipment.The intelligent pneumoperitoneum machine comprises a pneumoperitoneum machine body, and a control panel is arranged on the surface of the pneumoperitoneum machine body; a carbon dioxide outlet, a smoke removal pipeline interface, a power switch, a pedal circuit connection socket and a liquid crystal display touch screen are respectively arranged on the surface of the control panel; the pneumoperitoneum machine body comprises a pneumoperitoneum pressure sensor, a proportional valve and a control system, the pneumoperitoneum pressure sensor is used for monitoring abdominal cavity pressure in real time and transmitting data to the control system, and the proportional valve is used for adjusting gas flow so as to accurately control the pneumoperitoneum pressure. The pressure difference can be quickly compensated, the stability of pneumoperitoneum pressure is kept, and the safety of an operation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an intelligent insufflator capable of removing smoke and having a constant pressure. Background Art

[0002] The carbon dioxide insufflator is the core supporting device for modern laparoscopic surgeries. The success of laparoscopic surgeries highly depends on the stable operating environment provided by the insufflator, and it is widely used in minimally invasive surgical fields such as cholecystectomy and subtotal gastrectomy. The technological evolution of the insufflator in laparoscopic surgeries has always revolved around three core requirements: pressure stability, gas safety, and surgical field clarity.

[0003] As the main device for establishing an artificial pneumoperitoneum in laparoscopic surgeries, the development process and technological innovation of the carbon dioxide insufflator have an important impact on the safety and effectiveness of surgeries.

[0004] Traditional insufflators have insufficient dynamic pressure control accuracy. When instruments frequently enter and exit or abdominal cavity aspiration operations are performed, it will cause large fluctuations in the intra-abdominal pressure, affecting the surgical effect. Therefore, there is room for improvement. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages existing in the prior art, and an intelligent insufflator capable of removing smoke and having a constant pressure is proposed. Its advantage is that it can quickly compensate for pressure differences, maintain the stability of the pneumoperitoneum pressure, and improve the safety of surgeries.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An intelligent insufflator capable of removing smoke and having a constant pressure, including an insufflator body, on the surface of the insufflator body is provided a control panel, and on the surface of the control panel are respectively provided a carbon dioxide gas outlet, a smoke removal pipeline interface, a power switch, a foot pedal circuit connection socket, and a liquid crystal display touch screen;

[0008] The insufflator body includes a pneumoperitoneum pressure sensor, a proportional valve, and a control system. The pneumoperitoneum pressure sensor is used to monitor the intra-abdominal pressure in real time and transmit the data to the control system. The proportional valve is used to adjust the gas flow rate to precisely control the pneumoperitoneum pressure. The control system is used to adjust the pneumoperitoneum pressure according to the real-time pressure data, integrating a dynamic pressure regulation algorithm and a PID control algorithm. The PID control algorithm automatically adjusts the opening degrees of the intake valve and the proportional valve, and the dynamic pressure regulation algorithm automatically controls the intake duration and frequency to achieve the purpose of outputting a constant pressure.

[0009] The present invention is further arranged such that the control system adopts a control method based on the PID algorithm, and through real-time feedback adjustment, realizes the constant output of the pneumoperitoneum pressure and the constancy of the output gas temperature;

[0010] The PID control formula is as follows:

[0011]

[0012] Among them, P control (t) represents the target pneumoperitoneum pressure, e(t) is the pneumoperitoneum pressure error, and K p , K i , K d respectively represent the proportional, integral, and differential coefficients, represents the error change rate.

[0013] The present invention is further configured such that, in order to cope with the individual differences of different patients and the changes in the anesthesia state, the control method adopts an adaptive PID control algorithm based on PID control to adjust the control parameters in real time so as to maintain the stability of the pneumoperitoneum pressure during the operation.

[0014] The present invention is further configured such that the update formula of the adaptive PID control algorithm is as follows:

[0015] K p (t) = α·K p (t - 1)+(1 - α)·δP(t)

[0016] K i (t) = β·K i (t - 1)+(1 - β)·δP(t)

[0017] K d (t) = γ·K d (t - 1)+(1 - γ)·δP(t);

[0018] Among them, K p (t), K i (t), K d (t) are the proportional, integral, and differential coefficients after dynamic adjustment respectively; α, β, γ are adjustment coefficients used to control the weight of the adaptive algorithm; δP(t) is the change amount of the pneumoperitoneum pressure.

[0019] The present invention is further configured such that the pneumoperitoneum machine body has a feedback mechanism. Whenever the sensor detects that the pressure deviates from the target value, the feedback signal will be transmitted to the control system; the control system calculates the PID output value according to the error between the feedback signal and the target pressure, and adjusts the proportional valve to control the gas flow; this process is carried out in real time to ensure that the pneumoperitoneum pressure is always within the set range.

[0020] The present invention is further configured such that the pneumoperitoneum machine body includes a gas supply system, and the gas supply system includes a gas source and a pressure regulator, and the pressure regulator is used to dynamically adjust the pressure of the gas source.

[0021] The present invention is further configured such that the insufflator body includes a gas temperature detection module and a heating module. The gas temperature detection module is a temperature sensor, and the heating module is a heater, which is used to increase the gas temperature to the human body temperature before the gas enters the patient's abdominal cavity.

[0022] The present invention is further configured such that the insufflator body includes a gas quality detection module. The gas quality detection module is a gas component detector, which is used to display the concentrations of formaldehyde, volatile organic compounds, PM2.5, and PM10 components in the gas in real time.

[0023] The present invention is further configured such that the insufflator body includes a smoke removal module. The smoke removal module includes a smoke removal pump and a filter. The filter is used to filter the smoke, and the smoke removal pump is used to discharge the gas after purification by the filter.

[0024] The present invention is further configured such that the pressure dynamic regulation process includes the following steps:

[0025] Step 1: When the pressure sensor captures a deviation between the actual abdominal pressure and the preset target value, a pressure difference signal is generated in real time.

[0026] Step 2: The control system performs operations on the difference signal based on the PID algorithm and the dynamic pressure regulation algorithm to generate a corresponding valve adjustment instruction.

[0027] Step 3: The air inlet and outlet valve and the proportional valve precisely adjust the carbon dioxide flow according to the instruction. After the deviation is eliminated, the steady-state output is automatically maintained to keep the insufflation pressure constant.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. For the smokable and intelligent insufflator with a constant pressure, through the high-precision insufflation pressure sensor and proportional valve control system of the present invention, combined with the dynamic pressure regulation system, the insufflation pressure in the abdominal cavity can be precisely adjusted; when the insufflation pressure fluctuates, the control system will immediately adjust the opening of the proportional valve, thereby quickly compensating for the pressure difference and maintaining the stability of the insufflation pressure, improving the safety of the operation.

[0030] 2. For the smokable and intelligent insufflator with a constant pressure, the intraoperative smoke removal function is added. The doctor can control the start and stop of this function by foot to ensure the clarity of the intraoperative field of view. The input gas heating function is added to increase the gas temperature to near the human body temperature before the gas enters the patient's abdominal cavity, reducing the discomfort of the patient; the function of gas quality detection is provided, and the concentrations of components such as formaldehyde, volatile organic compounds, PM2.5, and PM10 in the gas can be displayed in real time. Description of the Drawings

[0031] Figure 1 This is the overall structural schematic diagram of the intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure proposed by the present invention;

[0032] Figure 2 This is the schematic diagram of the dynamic pressure regulation process of the intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure proposed by the present invention.

[0033] In the figure: 1. Carbon dioxide outlet; 2. Smoke removal pipeline interface; 3. Power switch; 4. Foot pedal line connection socket; 5. Liquid crystal display touch screen. Specific embodiments

[0034] The technical solutions of this patent will be further described in detail below in combination with specific embodiments.

[0035] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation of this patent.

[0036] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent.

[0037] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0038] With the deep integration of artificial intelligence technology and the needs of minimally invasive surgery, the carbon dioxide pneumoperitoneum machine will gradually evolve into the core control center of the intelligent surgical environment. By implanting a reinforcement learning AI algorithm, the device can real-time analyze multi-dimensional physiological signals such as the patient's heart rate and blood oxygen saturation, and autonomously optimize the pneumoperitoneum pressure establishment rate, steady-state maintenance threshold, and gas heating strategy, realizing the leap from "mechanical execution" to "physiological adaptation".

[0039] Refer to Figure 1, a smoke-removable intelligent insufflator with a constant pressure, including an insufflator body, on the surface of which there is a control panel. On the surface of the control panel, there are respectively a carbon dioxide outlet 1, a smoke-removal pipeline interface 2, a power switch 3, a foot pedal line connection socket 4 and a liquid crystal display touch screen 5;

[0040] The insufflator body includes an insufflation pressure sensor, a proportional valve and a control system. The insufflation pressure sensor is used to monitor the abdominal cavity pressure in real time and transmit the data to the control system. The proportional valve is used to adjust the gas flow rate to accurately control the insufflation pressure. The control system is used to adjust the insufflation pressure according to the real-time pressure data, integrating the dynamic pressure regulation algorithm and the PID control algorithm. The PID control algorithm automatically adjusts the opening degrees of the intake valve and the proportional valve, and the dynamic pressure regulation algorithm automatically controls the intake duration and frequency to achieve the purpose of outputting a constant pressure.

[0041] In this embodiment, the control system adopts a control method based on the PID algorithm, and through real-time feedback regulation, realizes the constant output of the insufflation pressure and the constant output of the temperature of the output gas;

[0042] The PID control formula is:

[0043]

[0044] Among them, P control (t) represents the target insufflation pressure, e(t) is the insufflation pressure error, K p 、K i 、K d respectively represent the proportional, integral and differential coefficients, represents the error change rate; dynamically adjust the values of K p 、K i 、K d in real time according to the error to adapt to different surgical environments and patient needs.

[0045] In order to cope with the individual differences of different patients and the changes in the anesthesia state, the control method adopts an adaptive PID control algorithm on the basis of the PID control to adjust the control parameters in real time so as to maintain the stability of the insufflation pressure during the operation.

[0046] The update formula of the adaptive PID control algorithm is as follows:

[0047] K p (t) = α·K p (t - 1)+(1 - α)·δP(t)

[0048] K i (t) = β·K i (t - 1)+(1 - β)·δP(t)

[0049] Kd (t) = γ·K d (t-1)+(1-γ)·δP(t);

[0050] Among them, K p (t), K i (t), K d (t) are the proportional, integral and differential coefficients after dynamic adjustment; α, β and γ are the adjustment coefficients used to control the weight of the adaptive algorithm; δP(t) is the change in pneumoperitoneum pressure.

[0051] This adaptive algorithm can dynamically adjust PID control parameters according to real-time pressure feedback and the specific circumstances of the operation, thereby improving control accuracy and system response speed.

[0052] The high-precision pneumoperitoneum pressure sensor and proportional valve control system, combined with a dynamic pressure regulation system, can precisely regulate intra-abdominal pneumoperitoneum pressure. Specifically, when pneumoperitoneum pressure fluctuates, the control system immediately adjusts the opening of the proportional valve to quickly compensate for the pressure difference and maintain stable pneumoperitoneum pressure.

[0053] The pneumoperitoneum machine itself has a feedback mechanism. Whenever the sensor detects that the pressure deviates from the target value, a feedback signal will be transmitted to the control system; the control system calculates the PID output value based on the error between the feedback signal and the target pressure, and adjusts the proportional valve to control the gas flow; this process is carried out in real time to ensure that the pneumoperitoneum pressure is always within the set range.

[0054] Furthermore, the pneumoperitoneum machine body includes a gas supply system, which includes a gas source and a pressure regulator, and the pressure regulator is used to dynamically adjust the pressure of the gas source; the pneumoperitoneum machine body includes a gas temperature detection module and a heating module, the gas temperature detection module is a temperature sensor, and the heating module is a heater, which is used to increase the temperature to human body temperature before the gas enters the patient's abdominal cavity, thereby reducing the patient's discomfort; the pneumoperitoneum machine body includes a gas quality detection module, and the gas quality detection module is a gas composition detector, which is used to display the concentrations of formaldehyde, volatile organic compounds, PM2.5 and PM10 components in the gas in real time; the pneumoperitoneum machine body includes a smoke removal module, and the smoke removal module includes a smoke removal pump and a filter, the filter is used to filter the smoke, and the smoke removal pump is used to discharge the gas after purification through the filter. The doctor can control the start and stop of this function by foot pedal to ensure the clarity of the intraoperative field of view.

[0055] Reference Figure 2 , the pressure dynamic control process includes the following steps:

[0056] Step 1: When the pressure sensor detects a deviation between the actual abdominal pressure and the preset target value, a pressure difference signal is generated in real time;

[0057] Step 2: The control system calculates the difference signal based on the PID algorithm and the dynamic pressure regulation algorithm to generate corresponding valve adjustment instructions;

[0058] Step 3: The inlet and outlet valves and the proportional valve precisely adjust the carbon dioxide flow according to the instructions. After the deviation is eliminated, the system automatically maintains a steady-state output to keep the pneumoperitoneum pressure constant.

[0059] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. An intelligent insufflator that can remove smoke and has a constant pressure, including an insufflator body, characterized in that, The surface of the insufflator body is provided with a control panel, and the surface of the control panel is respectively provided with a carbon dioxide outlet (1), a smoke exhaust pipeline interface (2), a power switch (3), a foot pedal line connection socket (4), and a liquid crystal display touch screen (5); The insufflator body includes an insufflation pressure sensor, a proportional valve, and a control system. The insufflation pressure sensor is used to monitor the abdominal cavity pressure in real time and transmit the data to the control system. The proportional valve is used to adjust the gas flow rate to precisely control the insufflation pressure. The control system is used to adjust the insufflation pressure according to the real-time pressure data, integrating the dynamic pressure regulation algorithm and the PID control algorithm. The PID control algorithm automatically adjusts the opening degrees of the intake valve and the proportional valve, and the dynamic pressure regulation algorithm automatically controls the intake duration and frequency to achieve the purpose of outputting a constant pressure.

2. The intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure according to claim 1, wherein The control system adopts a control method based on the PID algorithm, and through real-time feedback regulation, realizes the constant output of the insufflation pressure and the constant output of the temperature of the output gas; The PID control formula is: Among them, P control (t) represents the target pneumoperitoneum pressure, e(t) is the pneumoperitoneum pressure error, K p , K i , K d represent the proportional, integral, and differential coefficients respectively, represents the error change rate.

3. The intelligent pneumoperitoneum machine capable of removing smoke and having constant pressure according to claim 2 is characterized in that: In order to cope with the individual differences of different patients and the changes in the anesthesia state, the control method adopts an adaptive PID control algorithm on the basis of the PID control to adjust the control parameters in real time and maintain the stability of the insufflation pressure during the operation.

4. The intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure according to claim 3, wherein The update formula of the adaptive PID control algorithm is as follows: K p (t)=α·K p (t-1)+(1-α)·δP(t) K i K(t) = β·K i (t - 1)+(1 - β)·δP(t) K d K(t) = γ·K d (t - 1)+(1 - γ)·δP(t); Among them, K p (t), K i (t), K d (t) are respectively the proportion, integral, and differential coefficients after dynamic adjustment; α, β, γ are adjustment coefficients used to control the weights of the adaptive algorithm; δP(t) is the change in pneumoperitoneum pressure.

5. The intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure according to claim 1, characterized in that, The insufflator body has a feedback mechanism. Whenever the sensor detects that the pressure deviates from the target value, the feedback signal will be transmitted to the control system; the control system calculates the PID output value according to the error between the feedback signal and the target pressure, and adjusts the proportional valve to control the gas flow rate; this process is carried out in real time to ensure that the insufflation pressure is always within the set range.

6. The intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure according to claim 1, wherein, The insufflator body includes a gas supply system, and the gas supply system includes a gas source and a pressure regulator. The pressure regulator is used to dynamically adjust the pressure of the gas source.

7. The intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure according to claim 6, characterized in that, The insufflator body includes a gas temperature detection module and a heating module. The gas temperature detection module is a temperature sensor, and the heating module is a heater, which is used to increase the gas temperature to the human body temperature before the gas enters the patient's abdominal cavity.

8. The intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure according to claim 7, characterized in that, The insufflator body includes a gas quality detection module. The gas quality detection module is a gas composition detector, which is used to display the concentrations of formaldehyde, volatile organic compounds, PM2.5, and PM10 components in the gas in real time.

9. The intelligent pneumoperitoneum machine capable of removing smoke and having constant pressure according to claim 8, characterized in that: The insufflator body includes a smoke exhaust module. The smoke exhaust module includes a smoke exhaust pump and a filter. The filter is used to filter the smoke, and the smoke exhaust pump is used to discharge the gas after being purified by the filter.

10. The intelligent pneumoperitoneum machine capable of removing smoke and having a constant pressure according to any one of claims 1-9, characterized in that, The pressure dynamic regulation process includes the following steps: Step 1: When the pressure sensor captures that there is a deviation between the actual abdominal pressure and the preset target value, a pressure difference signal is generated in real time; Step 2: The control system performs operations on the difference signal based on the PID algorithm and the dynamic pressure regulation algorithm to generate a corresponding valve adjustment instruction; Step 3: The intake and exhaust valves and the proportional valve precisely adjust the carbon dioxide flow rate according to the instruction. After the deviation is eliminated, the steady-state output is automatically maintained to maintain the constancy of the insufflation pressure.

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