Control Method, Control System, Control Device and Pneumoperitoneum Machine of Pneumoperitoneum Machine

Abstract

The present invention relates to the technical field of medical devices, and provides a control method, a control system, a control device and a pneumoperitoneum machine for a pneumoperitoneum machine. The control method of the pneumoperitoneum machine includes the following steps: obtaining the monitored pressure read by the pneumoperitoneum machine; when the monitored pressure is greater than a first pressure threshold and the maintenance duration is greater than or equal to a first preset duration, obtaining the pressure change rate within the first preset duration; if the pressure change rate is greater than a first pressure change rate threshold, it is determined as an expected fluctuation, and a first adjustment program is started; if the pressure change rate is less than or equal to the first pressure change rate threshold, it is determined as a continuous change, and a second adjustment program is started. By making a more detailed distinction about the cause of overpressure through the pressure change rate, different adjustment programs can be adopted, so that targeted adjustments can be made for the overpressure situation of expected fluctuations, avoiding the problems of high loss of equipment components and long time-consuming for equipment voltage stabilization.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a control method, a control system, a control device and a pneumoperitoneum machine for a pneumoperitoneum machine. Background Art

[0002] In existing pneumoperitoneum devices, in order to maintain the stability of the pneumoperitoneum pressure, a pressure monitoring and regulation mechanism is usually adopted. This mechanism sets a specific pressure threshold. Once it is detected that the pneumoperitoneum pressure fluctuates and exceeds this threshold, the device will immediately start the air release program for adjustment. However, in certain specific scenarios, such as when a doctor presses on the patient's body during a surgical operation, it will cause overpressure of the pneumoperitoneum pressure, and this kind of fluctuation often exceeds the preset threshold. According to the traditional pneumoperitoneum stabilization method, the device will quickly release air in this case. After the pressing action ends, a large amount of air needs to be replenished to restore the pressure balance in the pneumoperitoneum.

[0003] This traditional pneumoperitoneum stabilization method has obvious drawbacks. On the one hand, as long as the pneumoperitoneum pressure exceeds the threshold, the device will inevitably perform air release and air replenishment actions, which undoubtedly increases the usage frequency of components, resulting in higher component wear, increasing the maintenance cost and failure risk of the device. On the other hand, frequent air release followed by air replenishment prolongs the time required for the pneumoperitoneum to return to stability, thus slowing down the overall progress of the operation. Especially when the pneumoperitoneum pressure fluctuation caused by the doctor's pressing is relatively short-lived, this problem of delayed stabilization is more prominent, and doctors often hope that the pneumoperitoneum can stabilize more quickly after pressing in order to better perform subsequent surgical operations.

[0004] Therefore, there is an urgent need for a new control method for a pneumoperitoneum machine at present, which can effectively solve the problems of relatively high component wear of the device and long time-consuming for stabilizing the pneumoperitoneum pressure caused by expected fluctuations, such as the fluctuations caused by the doctor's pressing, in order to improve the surgical efficiency and reduce the wear of the device. Summary of the Invention

[0005] The purpose of the present invention is to provide a control method for a pneumoperitoneum machine, so as to solve the technical problems of relatively high component wear of the device and long time-consuming for stabilizing the device caused by expected fluctuations in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides a control method for a pneumoperitoneum machine, including the following steps: obtaining the monitored pressure read by the pneumoperitoneum machine; when the monitored pressure is greater than a first pressure threshold and the maintenance duration is greater than or equal to a first preset duration, obtaining the pressure change rate within the first preset duration; if the pressure change rate is greater than a first pressure change rate threshold, it is determined as an expected fluctuation and a first adjustment program is started; if the pressure change rate is less than or equal to the first pressure change rate threshold, it is determined as a continuous change and a second adjustment program is started.

[0007] Further, the obtaining of the monitored pressure read by the pneumoperitoneum machine includes: obtaining the sampled pressure and the corresponding value-taking moment; taking the average value of the sampled pressures at every consecutive N value-taking moments as the monitored pressure, where N≥1.

[0008] Further, the obtaining of the pressure change rate within the first preset duration includes: within the first preset duration, there are M values of the monitored pressure, dividing the difference between adjacent monitored pressures by the time interval between adjacent monitored pressures to obtain M - 1 pressure change rates; taking the maximum value among the M - 1 pressure change rates as the pressure change rate within the first preset duration.

[0009] Further, the first adjustment program includes: when the monitored pressure is less than or equal to a second pressure threshold and the maintenance duration is greater than a second preset duration, starting a first pressure reduction program; when the monitored pressure is greater than the second pressure threshold, starting a second pressure reduction program.

[0010] Further, the first adjustment program further includes: when the monitored pressure is less than the second pressure threshold and the maintenance duration is less than the second preset duration, sending a first prompt signal; when the monitored pressure is less than or equal to the second pressure threshold and the maintenance duration is greater than the second preset duration, sending a second prompt signal; when the monitored pressure is greater than the second pressure threshold, sending a third prompt signal.

[0011] Further, the first pressure reduction program includes: opening a first pressure relief valve; the second pressure reduction program includes: opening the first pressure relief valve and a second pressure relief valve.

[0012] Further, the second adjustment program includes: when the monitored pressure is less than or equal to the second pressure threshold, starting a third pressure reduction program and starting a first counting program; when the monitored pressure is greater than the second pressure threshold, starting a fourth pressure reduction program and starting a second counting program.

[0013] Further, the second adjustment program further includes: when the monitored pressure is less than or equal to the second pressure threshold, sending a fourth prompt signal; when the monitored pressure is greater than the second pressure threshold, sending a fifth prompt signal.

[0014] Further, the third pressure reduction program includes: opening the first pressure relief valve; the fourth pressure reduction program includes: opening the first pressure relief valve and the second pressure relief valve.

[0015] In a second aspect, an embodiment of the present invention further provides a control system for a pneumoperitoneum machine, including: a pressure monitoring module, configured to obtain the monitored pressure read by the pneumoperitoneum machine and determine whether the monitored pressure is greater than a first pressure threshold and the duration of maintenance is greater than or equal to a first preset duration; a pressure change rate calculation module, connected to the pressure monitoring module, and when the pressure monitoring module determines that the monitored pressure is greater than the first pressure threshold and the duration of maintenance is greater than or equal to the first preset duration, configured to obtain the pressure change rate within the first preset duration; a judgment module, connected to the pressure change rate calculation module, configured to determine whether it is an expected fluctuation or a continuous change according to the pressure change rate calculated by the pressure change rate calculation module; when the pressure change rate is greater than a first pressure change rate threshold, it is determined as an expected fluctuation; when the pressure change rate is less than or equal to the first pressure change rate threshold, it is determined as a continuous change; an adjustment control module, connected to the judgment module, and is activated when the judgment module determines an expected fluctuation, and executes a first adjustment program; and is activated when the judgment module determines a continuous change, and executes a second adjustment program to keep the pneumoperitoneum pressure stable.

[0016] In a third aspect, an embodiment of the present invention further provides a control device for a pneumoperitoneum machine, including a processor, a memory, and a computer program stored in the memory and operable on the processor, and the computer program implements the method steps in the control method of the pneumoperitoneum machine as described in the previous item when running.

[0017] In a fourth aspect, an embodiment of the present invention further provides a pneumoperitoneum machine, including the control device of the pneumoperitoneum machine as described in the previous item; a pressure sensor, configured to measure the pneumoperitoneum pressure; a first pressure relief valve and a second pressure relief valve, configured to control the pneumoperitoneum pressure relief; and the control device of the pneumoperitoneum machine is electrically connected to the pressure sensor, the first pressure relief valve, and the second pressure relief valve.

[0018] The embodiments of the present invention have at least the following technical effects:

[0019] A pneumoperitoneum stability control method provided by an embodiment of the present invention. During the stage where the pneumoperitoneum needs to be kept stable during a surgery, if a phenomenon of pneumoperitoneum overpressure occurs, this control method is used to make the pneumoperitoneum restore the required pressure. First, it is necessary to obtain the monitored pressure of the pneumoperitoneum, and set a first pressure threshold and a first preset duration in advance. When the monitored pressure is greater than the first pressure threshold and the maintenance duration is greater than or equal to the first preset duration, obtain the pressure change rate within the first preset duration; if the pressure change rate is greater than the first pressure change rate threshold, it is judged as an expected fluctuation and the first adjustment program is started; if the pressure change rate is less than or equal to the first pressure change rate threshold, it is judged as a continuous change and the second adjustment program is started.

[0020] The expected fluctuation boost in pressure caused by manual pressing and the continuously changing overpressure caused by other reasons will have obvious differences in the pressure change rate. Therefore, it is necessary to preset the first pressure change rate threshold in advance. The reasons for the expected fluctuation overpressure and the continuously changing overpressure are different. The reason for the expected fluctuation overpressure is relatively clear, and after the expected fluctuation, the pneumoperitoneum also needs to quickly return to the desired pressure; for the overpressure caused by continuous change, there may be various reasons. One is the change of the patient himself, such as the decrease in the abdominal wall compliance of the patient, the edema or congestion of the abdominal viscera, etc., which are unpredictable conditions. Another is the performance problem of the pneumoperitoneum machine. For example, if there is a bend or blockage in the gas delivery pipeline of the pneumoperitoneum machine, it will also cause the pneumoperitoneum pressure to slowly rise. By making a more detailed distinction of the reasons or situations of the overpressure through the pressure change rate, different adjustment programs can be adopted, which can largely avoid the problem of high loss of equipment components, and can make targeted adjustments for the overpressure situation of expected fluctuations, avoiding the problem that it takes a long time to stabilize the pneumoperitoneum pressure after the expected fluctuation, improving the surgical efficiency and reducing the loss of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic flowchart of a control method for a pneumoperitoneum machine provided by an embodiment of the present invention;

[0023] Figure 2 It is a schematic flowchart of obtaining the monitored pressure read by the pneumoperitoneum machine provided by an embodiment of the present invention;

[0024] Figure 3A schematic flowchart for obtaining the pressure change rate within the first preset duration provided by an embodiment of the present invention;

[0025] Figure 4 A partial schematic flowchart of the first adjustment program provided by an embodiment of the present invention;

[0026] Figure 5 Another partial schematic flowchart of the first adjustment program provided by an embodiment of the present invention;

[0027] Figure 6 A partial schematic flowchart of the second adjustment program provided by an embodiment of the present invention;

[0028] Figure 7 Another partial schematic flowchart of the second adjustment program provided by an embodiment of the present invention;

[0029] Figure 8 A schematic structural diagram of a control system of a pneumoperitoneum machine provided by an embodiment of the present invention. Detailed implementation manners

[0030] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Those skilled in the art of the present technology can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless specifically defined as here.

[0032] Those skilled in the art of the present technology can understand that, unless specifically stated, the singular forms "a", "an", "the", and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present invention means the presence of the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or their combinations. The phrase "and / or" used herein includes all or any unit and all combinations of one or more of the associated listed items.

[0033] In the first aspect, please refer to Figures 1 to 7 , an embodiment of the present invention provides a control method for a pneumoperitoneum machine, including:

[0034] S100: Obtain the monitored pressure read by the insufflator.

[0035] In this embodiment, this control method is applicable to the stage where the pneumoperitoneum needs to be kept stable during the operation. If the phenomenon of pneumoperitoneum overpressure occurs, this control method is used to restore the pneumoperitoneum to the original required pressure. First, it is necessary to obtain the monitored pressure read by the insufflator, which is actually the actual real-time pressure of the pneumoperitoneum.

[0036] S200: When the monitored pressure is greater than the first pressure threshold and the maintenance duration is greater than or equal to the first preset duration, obtain the pressure change rate within the first preset duration.

[0037] Both the first pressure threshold and the first preset duration here need to be set in advance. If the pressure that the pneumoperitoneum needs to maintain, that is, the desired pressure, is X mmHg, then the first pressure threshold can be set to (X + 2) mmHg, and the first preset duration can be set to 0.5 s. That is to say, if the difference between the monitored pressure of the pneumoperitoneum and the desired pressure of the pneumoperitoneum exceeds 2 mmHg, and this difference remains above 2 mmHg for 0.5 s, or in other words, when the monitored pressure of the pneumoperitoneum is greater than (X + 2) mmHg and remains for 0.5 s, then at this time, it is necessary to calculate and obtain the pressure change rate within this 0.5 s. Of course, setting the first pressure threshold to (X + 2) mmHg and the first preset duration to 0.5 s here is only for the purpose of giving an example for easy understanding and is not a limitation on its value. Specifically, more appropriate assignments can be made according to the change of the pneumoperitoneum pressure during the actual operation of the surgery. This first pressure threshold is greater than the desired pressure but must be less than the maximum pressure that the human abdominal cavity can withstand.

[0038] S300: If the pressure change rate is greater than the first pressure change rate threshold, it is judged as an expected fluctuation, and the first adjustment program is started.

[0039] S400: If the pressure change rate is less than or equal to the first pressure change rate threshold, it is judged as a continuous change, and the second adjustment program is started.

[0040] The expected fluctuations caused by manual pressing will lead to a sudden increase in intra-abdominal pressure, which is significantly different from the continuously changing overpressure caused by other reasons in terms of the rate of pressure change. Therefore, it is necessary to preset the first pressure change rate threshold. For example, the first pressure change rate threshold can be set to 2 mmHg / s. If the pressure change rate is greater than 2 mmHg / s, it is judged as an expected fluctuation. If the pressure change rate is less than or equal to 2 mmHg / s, it is judged as a continuous change. The reasons for the overpressure of expected fluctuations and continuous changes are different. The reasons for the overpressure of expected fluctuations are relatively clear, and after the expected fluctuation, the pneumoperitoneum also needs to quickly return to the desired pressure; there may be various reasons for the overpressure caused by continuous changes. One is the change of the patient himself, such as the decrease in the compliance of the patient's abdominal wall (after the establishment of pneumoperitoneum, as the surgical operation progresses, the abdominal wall gradually adapts to the pneumoperitoneum pressure, and its elastic retraction force weakens, resulting in a smaller relative space in the abdominal cavity, thus causing the pneumoperitoneum pressure to rise slowly), or unexpected conditions such as abdominal organ edema or congestion. Another is the performance problem of the pneumoperitoneum machine. For example, if there is a bend or blockage in the gas delivery pipeline of the pneumoperitoneum machine, it will also cause the pneumoperitoneum pressure to rise slowly. By making a more detailed distinction of the reasons or situations of overpressure through the pressure change rate, and then adopting different adjustment procedures, the problem of high loss of equipment components can be largely avoided, and targeted adjustments can be made for the overpressure situation of expected fluctuations, avoiding the problem of long time-consuming for the equipment to stabilize the pneumoperitoneum pressure after expected fluctuations, improving the surgical efficiency and reducing the loss of the equipment.

[0041] In this embodiment, specifically, step S100 specifically includes:

[0042] S101: Obtain the sampled pressure and the corresponding sampling time;

[0043] S102: Take the average value of the sampled pressures at every consecutive N sampling times as the monitored pressure, where N≥1.

[0044] Generally speaking, the sampled pressure of the equipment is very high-frequency. For example, the pressure is sampled every 25 ms. However, the monitored pressure of the pneumoperitoneum needs to be displayed for the doctor to observe. Taking the average value of the sampled pressures at every consecutive N sampling times as the monitored pressure, where N≥1. If N is taken as 4, the monitored pressure of the pneumoperitoneum is the average value of the sampled pressures within 100 ms.

[0045] The advantages of such value-taking are as follows. On the one hand, it can reduce the interference of noise. Although high-frequency sampling can capture the rapid changes in pressure, it is also vulnerable to various noises, such as electromagnetic interference in the surgical environment. These noises can cause instantaneous fluctuations in the sampled pressure values, making the monitored pressure data less smooth and stable. By taking the average of consecutive N sampled pressure values, these instantaneous noise interferences can be effectively filtered out. When there is random noise, they will cancel each other out to a certain extent among multiple sampled values, so that the final monitored pressure is closer to the true pneumoperitoneum pressure level and provides a more accurate monitoring result. On the other hand, it can provide a stable and reliable reference. During the operation, doctors need to judge the safety and effectiveness of the surgical operation based on the pneumoperitoneum pressure. If the monitored pressure fluctuates frequently, it will bring difficulties to the doctor's judgment and may even lead to misjudgment. The monitored pressure after averaging is more stable and can provide a reliable reference for the doctor, helping him better control the surgical process. It can also help the device reduce unnecessary adjustments. The monitored pressure after taking the average can more accurately reflect the overall state of the pneumoperitoneum, making the adjustment of the pneumoperitoneum machine more reasonable and necessary and reducing unnecessary losses of the device.

[0046] In this embodiment, specifically, step S200 specifically includes:

[0047] S201: Within the first preset time period, including M values of the monitored pressure, divide the difference between adjacent monitored pressures by the interval time between adjacent monitored pressures to obtain M - 1 pressure change rates;

[0048] S202: Take the maximum value among the M - 1 pressure change rates as the pressure change rate within the first preset time period.

[0049] In this embodiment, taking the maximum value among the M - 1 pressure change rates as the pressure change rate within the first preset time period is mainly to ensure the sensitivity of pressure changes and more accurately judge the type of pressure changes, where M≥2. By taking the maximum value, it can ensure that even if there are rapid pressure changes within a short period of time, they can be captured in time. Suppose it is an overpressure within the expected fluctuation range, for example, the monitored pressure is greater than the first pressure threshold and lasts for the first preset time period, but the monitored pressure does not always increase within the first preset time period and may become flat at a certain moment. By taking the maximum value, it can avoid missing important information that may be missed by taking the average value or a smaller value. During the operation, the maximum value can provide the most direct and obvious pressure change information, reduce misjudgment caused by unobvious pressure changes, and ensure that the adjustment of the pneumoperitoneum machine is more accurate and effective.

[0050] In this embodiment, specifically, step S300 specifically includes:

[0051] S301: When the monitored pressure is less than or equal to a second pressure threshold and is maintained for a time period greater than a second preset time period, a first pressure reduction procedure is initiated.

[0052] Preferably, the first pressure reduction procedure includes: opening a first pressure relief valve.

[0053] S302: When the monitored pressure is greater than a second pressure threshold, a second pressure reduction procedure is started.

[0054] Preferably, the second pressure reduction procedure includes: opening the first pressure relief valve and the second pressure relief valve.

[0055] In this embodiment, it is necessary to pre-set a second pressure threshold and a second preset time, wherein the second pressure threshold is greater than the first pressure threshold, and the second preset time is greater than the first preset time. If the first pressure threshold is set to (X+2) mmHg, then the second pressure threshold can be set to (X+4) mmHg. The value of the second pressure threshold is more inclined to the maximum pressure value that the pneumoperitoneum can withstand but must be less than the maximum pressure value. The first preset time is to learn the change more quickly, and the second preset time is to take into account the fluctuation caused by very short-term compression to avoid excessive reaction of the device. For example, if the second preset time is set to 3s, if the overpressure of the pneumoperitoneum is greater than the first pressure threshold but less than the second pressure threshold, and the duration is only 2s, which is less than the second preset time, then the device does not need to start the depressurization program at this time, because this short-term small-range overpressure will not cause too much damage to the human body, and the overpressure phenomenon will disappear after the compression disappears. Moreover, because the device does not perform depressurization, the pneumoperitoneum will quickly restore the original pressure level, which also reduces the overreaction of the device and the loss of parts. In addition, frequent switching of valves will also bring additional noise, which can also reduce the generation of noise.

[0056] When the monitored pressure is less than or equal to the second pressure threshold, and the duration is greater than the second preset duration, the first depressurization program is started to ensure that even if the range of overpressure is relatively small, if the duration is too long, it may still damage the human body, so it is necessary to reduce the pressure at this time. When the monitored pressure is greater than the second pressure threshold, it means that the pneumoperitoneum pressure is closer to the critical value at this time. In this case, the pressure must be reduced to prevent irreversible damage caused by excessive pneumoperitoneum pressure. These two situations are different, so the depressurization programs used are also different. The first depressurization program only opens the first pressure relief valve, and the second depressurization program needs to open the first pressure relief valve and the second pressure relief valve. The gas flux of the first pressure relief valve is less than the gas flux of the second pressure relief valve, so the pressure relief speed of the first pressure relief valve is less than the pressure relief speed of the second pressure relief valve. The first depressurization program can reduce the pressure without deflation too much, and can stabilize the pneumoperitoneum pressure more quickly after the compression is completed; the second depressurization program can maximize the safety of the operation. In summary, the stability of the pneumoperitoneum is more efficient and less lossy.

[0057] In this embodiment, specifically, step S300 further includes:

[0058] S311: When the monitored pressure is less than the second pressure threshold and the duration is less than the second preset duration, send a first prompt signal.

[0059] S312: When the monitored pressure is less than or equal to the second pressure threshold and the duration is greater than the second preset duration, send a second prompt signal.

[0060] S313: When the monitored pressure is greater than the second pressure threshold, send a third prompt signal.

[0061] In this embodiment, considering that if a doctor only looks at the monitored pressure during the operation, they cannot intuitively grasp the device dynamics, which will also become a hidden danger during the operation. Therefore, prompt signals need to be added. The prompt signals can appear in the form of sound, light, text, etc., and can even be combined. The first, second, and third prompt signals are all different. Next, taking the form of text as an example, the first, second, and third prompt signals can be: expected fluctuation, expected fluctuation timeout, and expected fluctuation overpressure respectively. Prompting "expected fluctuation" means that the device has captured a pressure fluctuation caused by, for example, manual pressing, but will not release air, only for prompting; prompting "expected fluctuation timeout" can prompt the doctor on the one hand, and also means that the device needs to open the first pressure relief valve to relieve pressure, and close the first pressure relief valve when the monitored pressure is less than the first pressure threshold; prompting "expected fluctuation overpressure" can prompt the doctor on the one hand, and also means that the device needs to open the first pressure relief valve and the second pressure relief valve to relieve pressure, and close the first pressure relief valve and the second pressure relief valve when the monitored pressure is less than the first pressure threshold.

[0062] In this embodiment, specifically, step S400 includes:

[0063] S401: When the monitored pressure is less than or equal to the second pressure threshold, start the third pressure reduction program and start the first counting program.

[0064] Preferably, the third pressure reduction program includes: opening the first pressure relief valve.

[0065] Preferably, the first counting program includes: within the third preset duration, if the number of times the third pressure reduction program is started exceeds the first preset number, send a first warning signal.

[0066] S402: When the monitored pressure is greater than the second pressure threshold, start the fourth pressure reduction program and start the second counting program.

[0067] Preferably, the fourth pressure reduction program includes: opening the first pressure relief valve and the second pressure relief valve.

[0068] Preferably, the second counting program includes: within a fourth preset time period, if the number of times the fourth pressure reduction program is started exceeds a second preset number, a second warning signal is issued.

[0069] In this embodiment, since the reason for the continuous increase in pressure is unknown, it is safer to use the method of comparing the monitored pressure with the second pressure threshold as the basis for which pressure reduction program to execute. The third and fourth pressure reduction programs are different. At the same time, because the reason for the continuous increase in pressure is unknown but the pressure continues to rise, in addition to pressure relief, it is also necessary to consider whether it is due to the patient's own reasons or equipment reasons that cause the continuous increase in pressure.

[0070] Therefore, in addition to when the monitored pressure is less than or equal to the second pressure threshold, opening the first pressure relief valve until the monitored pressure is less than the first pressure threshold and then closing the first pressure relief valve; when the monitored pressure is greater than the second pressure threshold, opening the first pressure relief valve and the second pressure relief valve until the monitored pressure is less than the first pressure threshold and then closing the first pressure relief valve and the second pressure relief valve; it is also necessary to consider starting the counting program. Because the pressure change caused by the patient's own changes is limited. If within a certain limited time period in the future, the number of times of the same continuous change exceeds the set number, for example, the third pressure reduction program is started 5 times within the next 10 minutes of the operation, it means that there is a probability that there are some problems with the equipment at this time, and a warning signal is sent to remind the doctor to eliminate potential hazards in time. Here, the third preset time period of 10 minutes and the first preset number of 5 times are only for easy understanding and are not restrictions on their values. The third and fourth preset time periods can be the same or different, and the first and second preset numbers can be the same or different. Reasonable values can be set according to the actual operation process.

[0071] In this embodiment, specifically, step S400 further includes:

[0072] S411: When the monitored pressure is less than or equal to the second pressure threshold, a fourth prompt signal is issued.

[0073] S412: When the monitored pressure is greater than the second pressure threshold, a fifth prompt signal is issued.

[0074] In this embodiment, the fourth and fifth prompt signals are different. The main purpose is to ensure that the doctor can more intuitively grasp the equipment dynamics during the operation. The prompt signals can also appear in the form of sound, light, text, image, etc., and can even be combined.

[0075] In the second aspect, please refer to Figure 8, an embodiment of the present invention provides a pneumoperitoneum stability control system, including: a pressure monitoring module, configured to obtain the monitored pressure read by the pneumoperitoneum machine and determine whether the monitored pressure is greater than a first pressure threshold and the duration of maintenance is greater than or equal to a first preset duration; a pressure change rate calculation module, connected to the pressure monitoring module, and when the pressure monitoring module determines that the monitored pressure is greater than the first pressure threshold and the duration of maintenance is greater than or equal to the first preset duration, configured to obtain the pressure change rate within the first preset duration; a judgment module, connected to the pressure change rate calculation module, configured to judge whether it is an expected fluctuation or a continuous change according to the pressure change rate calculated by the pressure change rate calculation module; when the pressure change rate is greater than a first pressure change rate threshold, it is judged as an expected fluctuation; when the pressure change rate is less than or equal to the first pressure change rate threshold, it is judged as a continuous change; an adjustment control module, connected to the judgment module, is started when the judgment module judges as an expected fluctuation and executes a first adjustment program; is started when the judgment module judges as a continuous change and executes a second adjustment program to keep the pneumoperitoneum pressure stable.

[0076] In this embodiment, the pressure monitoring module is used to monitor the pressure inside the pneumoperitoneum in real time and can determine whether the monitored pressure is greater than the first pressure threshold and the duration of maintenance is greater than or equal to the first preset duration; according to the judgment result of the pressure monitoring module, the pressure change rate within the first preset duration is calculated by the pressure change rate calculation module; the judgment module judges whether it is an expected fluctuation or a continuous change according to the pressure change rate calculated by the pressure change rate calculation module; the adjustment control module selects different adjustment programs according to different overpressure reasons to keep the pneumoperitoneum pressure stable. By making a more detailed distinction of the reasons or situations of overpressure through the pressure change rate, and thus adopting different adjustment programs, the problem of high loss of equipment components can be largely avoided, and targeted adjustments can be made for the overpressure situation of expected fluctuations, avoiding the problem that it takes a long time to stabilize the pneumoperitoneum pressure after an expected fluctuation, improving the surgical efficiency and reducing the loss of the equipment.

[0077] In the control system of the pneumoperitoneum machine described in this embodiment, the functions of each module are the same as the method steps of the control method of the pneumoperitoneum machine described in the first aspect. Therefore, for the details not described in this embodiment, please refer to the first aspect and Figures 1 to 7 its specific description, which will not be elaborated here.

[0078] In the third aspect, an embodiment of the present invention provides a control device for a pneumoperitoneum machine, including a processor, a memory, and a computer program stored in the memory and operable on the processor. When the computer program runs, it implements the method steps in the control method of the pneumoperitoneum machine in the first aspect.

[0079] By means of a computer program stored in a memory and running on a processor, the cause or situation of overpressure is more finely distinguished by the rate of change of pressure, so as to adopt different adjustment programs, avoiding the problems of high loss of equipment components and long time-consuming for stabilizing the pneumoperitoneum pressure after expected fluctuations, improving the surgical efficiency and reducing the loss of the equipment.

[0080] The method steps implemented when the computer program runs in the control device of the pneumoperitoneum machine described in this embodiment correspond to the steps of the control method of the pneumoperitoneum machine in the first aspect. For the details not described in this embodiment, please refer to the first aspect and Figures 1 to 7 the specific description, which will not be elaborated here.

[0081] In a fourth aspect, an embodiment of the present invention provides a pneumoperitoneum machine, including a control device of the pneumoperitoneum machine as in the third aspect; a pressure sensor for measuring the pneumoperitoneum pressure; a first pressure relief valve and a second pressure relief valve for controlling the pneumoperitoneum pressure relief; and the control device of the pneumoperitoneum machine, which is electrically connected to the pressure sensor, the first pressure relief valve and the second pressure relief valve.

[0082] In this embodiment, the control device of the pneumoperitoneum machine in the pneumoperitoneum machine relies on the pressure sensor to monitor and obtain the pneumoperitoneum pressure in real time, so as to make judgments and control the first pressure relief valve and the second pressure relief valve, so that the pneumoperitoneum pressure is kept stable while also avoiding the problems of high loss of equipment components and long time-consuming for stabilizing the pneumoperitoneum pressure after expected fluctuations.

[0083] Preferably, the pneumoperitoneum machine further includes a reminder structure for sending the first to fifth prompt signals and the first and second warning signals. The reminder structure is controlled by the control device of the pneumoperitoneum machine, which is convenient for doctors to better master the equipment dynamics and eliminate potential safety hazards in time. The reminder structure can emit any one or a combination of sounds, lights, texts or images.

[0084] Similarly, for the details not described in this embodiment, please refer to the foregoing first to third aspects and Figures 1 to 8 the specific description, which will not be elaborated here.

[0085] Those skilled in the art of the present technology can understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in the present invention can be alternated, changed, combined, or deleted. Further, the other steps, measures, and solutions in the various operations, methods, and processes discussed in the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and solutions in the prior art that are the same as those disclosed in the various operations, methods, and processes of the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted.

[0086] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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. Therefore, it should not be construed as a limitation to the present invention.

[0087] The terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0088] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0089] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control system for an insufflator, characterized in that: include: A pressure monitoring module, used to obtain the monitoring pressure read by the pneumoperitoneum machine, and determine whether the monitoring pressure is greater than a first pressure threshold and maintained for a time greater than or equal to a first preset time; a pressure change rate calculation module, connected to the pressure monitoring module, and used to obtain the pressure change rate within the first preset time period when the pressure monitoring module determines that the monitored pressure is greater than a first pressure threshold and the maintenance time is greater than or equal to a first preset time period; a judgment module, connected to the pressure change rate calculation module, for judging whether it is an expected fluctuation or a continuous change according to the pressure change rate calculated by the pressure change rate calculation module; when the pressure change rate is greater than a first pressure change rate threshold, it is judged as an expected fluctuation; when the pressure change rate is less than or equal to the first pressure change rate threshold, it is judged as a continuous change; The adjustment control module is connected to the judgment module, and is started to execute the first adjustment program when the judgment module judges that the fluctuation is expected; and is started to execute the second adjustment program when the judgment module judges that the change is continuous.

2. The control system of the pneumoperitoneum machine according to claim 1, characterized in that: The obtaining of the monitoring pressure read by the pneumoperitoneum machine comprises: Obtaining a sampling pressure and a value-taking time corresponding to the sampling pressure; The average value of the sampled pressures at each of N consecutive sampling moments is taken as the monitoring pressure, where N≥1.

3. The control system of the pneumoperitoneum machine according to claim 1, characterized in that: The step of obtaining the pressure change rate within the first preset time period includes: Within the first preset time period, including M values ​​of the monitoring pressure, the difference between adjacent monitoring pressures is divided by the interval time between adjacent monitoring pressures to obtain M-1 pressure change rates; The maximum value of the M-1 pressure change rates is taken as the pressure change rate within the first preset time period.

4. The control system of the pneumoperitoneum machine according to claim 1, characterized in that: The first adjustment procedure includes: When the monitored pressure is less than or equal to the second pressure threshold and the maintenance time is longer than the second preset time, starting the first pressure reduction program; When the monitored pressure is greater than the second pressure threshold, the second pressure reduction program is initiated.

5. The control system of the pneumoperitoneum machine according to claim 4, characterized in that: The first adjustment procedure also includes: When the monitored pressure is less than a second pressure threshold and the duration of the pressure maintenance is less than a second preset duration, a first prompt signal is issued; When the monitored pressure is less than or equal to the second pressure threshold and the duration is greater than the second preset duration, a second prompt signal is issued; When the monitored pressure is greater than the second pressure threshold, a third prompt signal is issued.

6. The control system of the pneumoperitoneum machine according to claim 4, characterized in that: The first pressure reduction procedure includes: opening a first pressure relief valve; The second pressure reduction procedure includes: opening a first pressure relief valve and a second pressure relief valve.

7. The control system of the pneumoperitoneum machine according to claim 1, characterized in that: The second adjustment procedure includes: When the monitored pressure is less than or equal to the second pressure threshold, the third pressure reduction program is started, and the first counting program is started; When the monitored pressure is greater than the second pressure threshold, the fourth pressure reduction program is started, and the second counting program is started.

8. The control system of the pneumoperitoneum machine according to claim 7, characterized in that: The second adjustment procedure further includes: When the monitored pressure is less than or equal to the second pressure threshold, a fourth prompt signal is issued; When the monitored pressure is greater than the second pressure threshold, a fifth prompt signal is issued.

9. The control system of the pneumoperitoneum machine according to claim 7, characterized in that: The third pressure reduction procedure includes: opening a first pressure relief valve; The fourth pressure reduction procedure includes: opening the first pressure relief valve and the second pressure relief valve.

10. A pneumoperitoneum machine, characterized in that: A control system comprising the pneumoperitoneum machine according to any one of claims 1 to 9; Pressure sensor for measuring pneumoperitoneum pressure; The first pressure relief valve and the second pressure relief valve are used to control the pressure relief of pneumoperitoneum; The control device of the pneumoperitoneum machine is electrically connected to the pressure sensor, the first pressure relief valve, and the second pressure relief valve.

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