Control method, control system and control device of pneumoperitoneum machine and pneumoperitoneum machine

Abstract

The invention relates to the technical field of medical instruments, and provides a control method, system and device of a pneumoperitoneum machine and the pneumoperitoneum machine. The control method of the pneumoperitoneum machine comprises the following steps that monitoring pressure read by the pneumoperitoneum machine is obtained; when the monitoring pressure is larger than a first pressure threshold value and the maintaining duration is larger than or equal to a first preset duration, the pressure change rate within the first preset duration is obtained; if the pressure change rate is larger than a first pressure change rate threshold value, expected fluctuation is judged, and a first adjusting program is started; and if the pressure change rate is smaller than or equal to the first pressure change rate threshold value, continuous change is judged, and a second adjustment program is started. The reasons of overpressure are distinguished more meticulously according to the pressure change rate, so that different adjusting programs are adopted, the overpressure condition of expected fluctuation can be adjusted in a targeted mode, and the problems that the loss of equipment parts is high, and the time consumed by equipment pressure stabilization is long are solved.

Description

Technical Field

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

[0002] In existing pneumoperitoneum devices, a pressure monitoring and regulation mechanism is usually used to maintain the stability of pneumoperitoneum pressure. This mechanism is set with a specific pressure threshold. Once the pneumoperitoneum pressure is detected to fluctuate and exceed this threshold, the device will immediately start the deflation program to make adjustments. However, in certain specific scenarios, such as when the doctor presses the patient's body during surgery, it will cause an overpressure of the pneumoperitoneum pressure, and this fluctuation often exceeds the preset threshold. According to the traditional pneumoperitoneum stabilization method, the device will quickly deflate in this case, and after the pressing action is completed, a large amount of air will be needed to restore the pressure balance in the pneumoperitoneum.

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

[0004] Therefore, there is an urgent need for a new insufflator control method that can effectively solve the problems of high wear and tear of equipment parts and long time required to stabilize the insufflator pressure caused by expected fluctuations, such as the fluctuations caused by the doctor's pressing, so as to improve surgical efficiency and reduce equipment wear. Summary of the invention

[0005] The purpose of the present invention is to provide a control method for an insufflator to solve the technical problems existing in the prior art of high loss of equipment parts and components due to expected fluctuations and long time consumption for equipment voltage stabilization.

[0006] In the first aspect, an embodiment of the present invention provides a control method for an insufflator, comprising the following steps: obtaining a monitoring pressure read by the insufflator; when the monitoring pressure is greater than a first pressure threshold and is maintained for a time greater than or equal to a first preset time, obtaining the pressure change rate within the first preset time; if the pressure change rate is greater than the first pressure change rate threshold, it is judged 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 judged as a continuous change, and a second adjustment program is started.

[0007] Furthermore, the obtaining of the monitoring pressure read by the pneumoperitoneum machine includes: obtaining the sampling pressure and the value-taking moment corresponding to the sampling pressure; taking the average value of the sampling pressure at each N consecutive value-taking moments as the monitoring pressure, N≥1.

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

[0009] Furthermore, the first adjustment procedure includes: when the monitored pressure is less than or equal to a second pressure threshold and maintained for a period greater than a second preset period, starting a first pressure reduction procedure; when the monitored pressure is greater than the second pressure threshold, starting a second pressure reduction procedure.

[0010] Furthermore, the first adjustment procedure also includes: when the monitored pressure is less than a second pressure threshold and the maintenance time is less than a second preset time, a first prompt signal is issued; when the monitored pressure is less than or equal to the second pressure threshold and the maintenance time is greater than the second preset time, a second prompt signal is issued; when the monitored pressure is greater than the second pressure threshold, a third prompt signal is issued.

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

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

[0013] Furthermore, the second adjustment procedure also includes: when the monitored pressure is less than or equal to the second pressure threshold, issuing a fourth prompt signal; when the monitored pressure is greater than the second pressure threshold, issuing a fifth prompt signal.

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

[0015] In the second aspect, an embodiment of the present invention further provides a control system of an insufflator, comprising: a pressure monitoring module, used to obtain the monitoring pressure read by the insufflator, 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 when the pressure monitoring module determines that the monitoring pressure is greater than the first pressure threshold and maintained for a time greater than or equal to the first preset time; a judgment module, connected to the pressure change rate calculation module, and used 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 the first pressure change rate threshold, it is determined to be an expected fluctuation; when the pressure change rate is less than or equal to the first pressure change rate threshold, it is determined to be a continuous change; an adjustment control module, connected to the judgment module, and started when the judgment module determines that it is an expected fluctuation, and a first adjustment program is executed; when the judgment module determines that it is a continuous change, it is started and a second adjustment program is executed to keep the insufflator pressure stable.

[0016] In the third aspect, an embodiment of the present invention further provides a control device for a pneumoperitoneum machine, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed, the method steps in the control method for the pneumoperitoneum machine as described in the preceding item are implemented.

[0017] In a fourth aspect, an embodiment of the present invention further provides an insufflator, comprising a control device of the insufflator as described in the preceding item; a pressure sensor for measuring the insufflator pressure; a first pressure relief valve and a second pressure relief valve for controlling the insufflator pressure relief; the control device of the insufflator 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: An embodiment of the present invention provides a pneumoperitoneum stabilization control method. During the stage when the pneumoperitoneum needs to be kept stable during surgery, if the pneumoperitoneum overpressure phenomenon occurs, this control method is used to restore the pneumoperitoneum to the original pressure that needs to be maintained. First, the monitoring pressure of the pneumoperitoneum is obtained, and the first pressure threshold and the first preset time are set in advance. When the monitoring pressure is greater than the first pressure threshold and the maintenance time is greater than or equal to the first preset time, the pressure change rate within the first preset time is obtained; 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.

[0019] The expected internal fluctuation pressure increase caused by manual compression and the continuously changing overpressure caused by other reasons will have obvious differences in the rate of pressure change, so the first pressure change rate threshold needs to be set in advance. The reasons for expected fluctuation overpressure and continuously changing overpressure are different. The reason for expected fluctuation overpressure is relatively clear, and because the expected fluctuation also requires pneumoperitoneum to quickly return to the expected pressure; the overpressure caused by continuous change may be of many kinds, one is the patient's own changes, such as the patient's reduced abdominal wall compliance, edema or congestion of abdominal organs and other unpredictable conditions, and the other is the performance problem of the pneumoperitoneum machine, such as if the gas delivery pipeline of the pneumoperitoneum machine is bent or blocked, it will also cause the pneumoperitoneum pressure to rise slowly. Through the pressure change rate, the cause or situation of overpressure can be distinguished more carefully, so as to adopt different adjustment procedures, which can largely avoid the problem of high loss of equipment parts and components, and can make targeted adjustments to the overpressure situation of expected fluctuations, avoiding the problem of the equipment taking a long time to stabilize the pneumoperitoneum pressure after the expected fluctuation, improving the efficiency of surgery and reducing the loss of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic flow chart of a control method of a pneumoperitoneum machine provided in an embodiment of the present invention; Figure 2 A schematic diagram of a process for obtaining the monitoring pressure read by a pneumoperitoneum machine provided in an embodiment of the present invention; Figure 3 A schematic diagram of a flow chart for obtaining the pressure change rate within the first preset time period provided by an embodiment of the present invention; Figure 4 A schematic diagram of a portion of the flow chart of a first adjustment procedure provided by an embodiment of the present invention; Figure 5 A schematic diagram of another part of the flow chart of the first adjustment procedure provided by an embodiment of the present invention; Figure 6 A schematic diagram of a portion of the flow chart of the second adjustment procedure provided by an embodiment of the present invention; Figure 7 A schematic diagram of another part of the flow chart of the second adjustment procedure provided by an embodiment of the present invention; Figure 8 A schematic structural diagram of a control system of an insufflator provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0024] Those skilled in the art will appreciate that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the 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 combinations thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0025] For the first aspect, see Figures 1 to 7 , an embodiment of the present invention provides a control method for a pneumoperitoneum machine, comprising: S100: Acquire the monitoring pressure read by the pneumoperitoneum machine.

[0026] In this embodiment, this control method is applicable to the stage where the pneumoperitoneum needs to be kept stable during surgery. If the pneumoperitoneum overpressure phenomenon occurs, this control method is used to restore the pneumoperitoneum to the original pressure that needs to be maintained. First, the monitoring pressure read by the pneumoperitoneum machine is obtained, which is actually the actual real-time pressure of the pneumoperitoneum.

[0027] S200: When the monitored pressure is greater than a first pressure threshold and maintained for a period greater than or equal to a first preset period, obtaining a pressure change rate within the first preset period.

[0028] The first pressure threshold and the first preset time here need to be set in advance. If the pressure that needs to be maintained for pneumoperitoneum, that is, the expected pressure, is XmmHg, then the first pressure threshold can be set to (X+2)mmHg, and the first preset time can be set to 0.5s. That is to say, if the difference between the monitoring pressure of pneumoperitoneum and the expected pressure of pneumoperitoneum exceeds 2 mmHg, and this difference is maintained above 2 mmHg for 0.5s, or the monitoring pressure of pneumoperitoneum is greater than (X+2)mmHg and maintained for 0.5s, then the pressure change rate within this 0.5s must be calculated. Of course, the first pressure threshold is set to (X+2)mmHg and the first preset time is set to 0.5s here, just for the sake of example, it is not a limitation on its value. Specifically, a more appropriate value can be assigned according to the change of pneumoperitoneum pressure during the actual operation. This first pressure threshold is greater than the expected pressure, but it must be less than the maximum pressure that the human abdominal cavity can withstand.

[0029] S300: If the pressure change rate is greater than a first pressure change rate threshold, it is determined to be an expected fluctuation, and a first adjustment procedure is started.

[0030] S400: If the pressure change rate is less than or equal to the first pressure change rate threshold, it is determined to be a continuous change, and a second adjustment procedure is started.

[0031] The expected fluctuation caused by artificial compression will cause a sudden increase in intra-abdominal pressure, which is significantly different from the continuously changing overpressure caused by other reasons in the rate of pressure change. Therefore, it is necessary to set the first pressure change rate threshold in advance. 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 expected fluctuation overpressure and continuous change overpressure are different. The reasons for expected fluctuation overpressure are relatively clear, and because the expected fluctuation also requires pneumoperitoneum to quickly return to the expected pressure; the overpressure caused by continuous change may be of many kinds. One is the patient's own changes, such as the patient's reduced abdominal wall compliance (after the establishment of pneumoperitoneum, as the operation proceeds, 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, so that the pneumoperitoneum pressure slowly rises), or unpredictable conditions such as edema or congestion of abdominal organs. The other 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, the pneumoperitoneum pressure will also increase slowly. By making a more detailed distinction between the causes or situations of overpressure through the pressure change rate, and adopting different adjustment procedures, the problem of high loss of equipment parts can be avoided to a large extent, and targeted adjustments can be made to the overpressure situation of expected fluctuations, avoiding the problem of the equipment taking a long time to stabilize the pneumoperitoneum pressure after the expected fluctuation, improving the surgical efficiency and reducing the loss of equipment.

[0032] In this embodiment, it is specifically described that step S100 specifically includes: S101: Acquire a sampling pressure and a value-taking time corresponding to the sampling pressure; S102: taking the average value of the sampled pressures at each of N consecutive sampling moments as the monitoring pressure, where N≥1.

[0033] Generally speaking, the sampling pressure of the equipment is very high frequency, for example, pressure sampling is performed every 25ms, but the monitoring pressure of pneumoperitoneum is to be displayed to the doctor for observation. The average value of the sampling pressure at each N consecutive sampling moments is taken as the monitoring pressure, N ≥ 1. If N is 4, the monitoring pressure of pneumoperitoneum is the average value of the sampling pressure within 100ms.

[0034] The advantage of this value is that, on the one hand, it can reduce noise interference. Although high-frequency sampling can capture rapid changes in pressure, it is also easily affected by various noises, such as electromagnetic interference in the surgical environment. These noises will cause instantaneous fluctuations in the sampled pressure value, making the monitored pressure data not smooth and stable enough. By taking the average of N consecutive sampled pressure values, these instantaneous noise interferences can be effectively filtered out. When there is random noise, they will offset each other in multiple sampled values, so that the final monitoring pressure is closer to the actual pneumoperitoneum pressure level, providing more accurate monitoring results. On the other hand, it can provide a stable and reliable reference. Doctors need to judge the safety and effectiveness of surgical operations based on pneumoperitoneum pressure during surgery. If the monitoring pressure fluctuates frequently, it will bring difficulties to the doctor's judgment and may even lead to misjudgment. The monitoring pressure after averaging is more stable, which can provide doctors with a reliable reference basis to help them better control the surgical process. It can also help the equipment reduce unnecessary adjustments. The averaged monitoring pressure can more accurately reflect the overall state of pneumoperitoneum, making the adjustment of the pneumoperitoneum machine more reasonable and necessary, and reducing unnecessary equipment losses.

[0035] In this embodiment, it is specifically described that step S200 specifically includes: S201: 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; S202: Taking the maximum value of the M-1 pressure change rates as the pressure change rate within the first preset time period.

[0036] In this embodiment, the maximum value of M-1 pressure change rates is taken as the pressure change rate within the first preset time period mainly to ensure the sensitivity of pressure changes and to more accurately judge the type of pressure change, where M≥2. By taking the maximum value, it can be ensured that even rapid changes in pressure that occur in a short period of time can be captured in time. If it is an overpressure within the expected fluctuation, 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 increase continuously within the first preset time period, and it is possible that it becomes flat at a certain moment, by taking the maximum value, it is possible to avoid important information that may be missed due to taking the average value or a smaller value. During surgery, the maximum value can provide the most direct and obvious pressure change information, reduce misjudgment caused by unclear pressure changes, and ensure that the adjustment of the pneumoperitoneum machine is more accurate and effective.

[0037] In this embodiment, it is specifically described that step S300 specifically includes: 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.

[0038] Preferably, the first pressure reduction procedure includes: opening a first pressure relief valve.

[0039] S302: When the monitored pressure is greater than a second pressure threshold, a second pressure reduction procedure is started.

[0040] Preferably, the second pressure reduction procedure includes: opening the first pressure relief valve and the second pressure relief valve.

[0041] 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.

[0042] 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.

[0043] In this embodiment, it is specifically explained that step S300 specifically further includes: S311: When the monitored pressure is less than a second pressure threshold and the maintenance time is less than a second preset time, a first prompt signal is issued.

[0044] S312: When the monitored pressure is less than or equal to the second pressure threshold and the duration of the maintenance is greater than the second preset duration, a second prompt signal is issued.

[0045] S313: When the monitored pressure is greater than the second pressure threshold, a third prompt signal is issued.

[0046] In this embodiment, it is considered that if the doctor only looks at the monitoring pressure during the operation, he cannot intuitively grasp the dynamics of the device, which will also become a hidden danger in the operation. Therefore, it is necessary to add a prompt signal, which can appear in the form of sound, light, text, etc., or even in combination. 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. The prompt "expected fluctuation" means that the device has captured the pressure fluctuation caused by human pressure, but will not be deflated, and is only used as a prompt; the prompt "expected fluctuation timeout" can remind the doctor on the one hand, and also means that the device will open the first pressure relief valve to relieve pressure, and close the first pressure relief valve when the pressure is relieved to the monitoring pressure less than the first pressure threshold; the prompt "expected fluctuation overpressure" can remind the doctor on the one hand, and also means that the device will 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 pressure is relieved to the monitoring pressure less than the first pressure threshold.

[0047] In this embodiment, it is specifically described that step S400 specifically includes: S401: 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.

[0048] Preferably, the third pressure reduction procedure includes: opening the first pressure relief valve.

[0049] Preferably, the first counting procedure includes: within a third preset time period, if the number of times the third voltage reduction procedure is started exceeds a first preset number of times, a first warning signal is issued.

[0050] S402: 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.

[0051] Preferably, the fourth pressure reduction procedure includes: opening the first pressure relief valve and the second pressure relief valve.

[0052] Preferably, the second counting procedure includes: within a fourth preset time period, if the number of times the fourth voltage reduction procedure is started exceeds a second preset number of times, a second warning signal is issued.

[0053] In this embodiment, since the cause of the continuously changing pressure increase is unknown, it is safer to use the method of comparing the monitored pressure with the second pressure threshold as the basis for executing which pressure reduction program, and the third and fourth pressure reduction programs are different. At the same time, because the cause of the pressure increase is unknown but the pressure continues to increase, in addition to pressure relief, it is also necessary to consider whether the continuous pressure increase is caused by the patient himself or the equipment.

[0054] Therefore, in addition to opening the first pressure relief valve when the monitored pressure is less than or equal to the second pressure threshold, and closing the first pressure relief valve until the monitored pressure is less than the first pressure threshold; opening the first pressure relief valve and the second pressure relief valve when the monitored pressure is greater than the second pressure threshold, and closing the first pressure relief valve and the second pressure relief valve when the monitored pressure is less than the first pressure threshold; it is also necessary to consider starting the counting program, because the pressure change caused by the patient's own changes is limited. If the number of the same continuous changes exceeds the set number within a certain limited time period, for example, the third blood 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 issued to remind the doctor to eliminate the hidden dangers in time. The third preset time length of 10 minutes and the first preset number of 5 times are only for the convenience of understanding and examples, and are not restrictions on their assignments. The third and fourth preset time lengths can be the same or different, and the first and second preset times can be the same or different. Reasonable values ​​can be set according to the actual surgical process.

[0055] In this embodiment, it is specifically explained that step S400 specifically further includes: S411: When the monitored pressure is less than or equal to the second pressure threshold, a fourth prompt signal is issued.

[0056] S412: When the monitored pressure is greater than the second pressure threshold, a fifth prompt signal is issued.

[0057] In this embodiment, the fourth and fifth prompt signals are different, mainly to ensure that the doctor can more intuitively grasp the dynamics of the equipment during the operation. The prompt signal can also appear in the form of sound, light, text, image, etc., and can even be combined. For the second aspect, see Figure 8The embodiment of the present invention provides a pneumoperitoneum stable control system, including: 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, when the pressure monitoring module determines that the monitoring pressure is greater than the first pressure threshold and maintained for a time greater than or equal to the first preset time, used to obtain the pressure change rate within the first preset time; a judgment module, connected to the pressure change rate calculation module, used 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 the first pressure change rate threshold, it is determined to be an expected fluctuation; when the pressure change rate is less than or equal to the first pressure change rate threshold, it is determined to be a continuous change; an adjustment control module, connected to the judgment module, when the judgment module determines that it is an expected fluctuation, it is started and a first adjustment program is executed; when the judgment module determines that it is a continuous change, it is started and a second adjustment program is executed, so that the pneumoperitoneum pressure remains stable.

[0058] In this embodiment, a pressure monitoring module is used to monitor the pressure in the pneumoperitoneum in real time, and it can be determined whether the monitored pressure is greater than a first pressure threshold and maintained for a time greater than or equal to a first preset time; based on the judgment result of the pressure monitoring module, the pressure change rate calculation module calculates the pressure change rate within the first preset time; the judgment module determines whether it is an expected fluctuation or a continuous change based on the pressure change rate calculated by the pressure change rate calculation module; the adjustment control module selects different adjustment programs according to different causes of overpressure, so that the pneumoperitoneum pressure remains stable. By making a more detailed distinction between the causes or situations of overpressure through the pressure change rate, and thus adopting different adjustment programs, the problem of high loss of equipment parts can be avoided to a large extent, and targeted adjustments can be made to the overpressure situation of expected fluctuations, avoiding the problem of a long time for the equipment to stabilize the pneumoperitoneum pressure after the expected fluctuation, thereby improving surgical efficiency and reducing equipment loss.

[0059] The functions of each module in the control system of the pneumoperitoneum machine described in this embodiment are the same as the method steps of the control method of the pneumoperitoneum machine described in the first aspect. Therefore, for the unfinished details in this embodiment, please refer to the first aspect and Figures 1 to 7 The detailed description will not be repeated here.

[0060] In a third aspect, an embodiment of the present invention provides a control device for a pneumoperitoneum machine, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed, the method steps in the control method for the pneumoperitoneum machine in the first aspect are implemented.

[0061] Through a computer program stored in a memory and running on a processor, the cause or situation of overpressure can be more finely distinguished through the rate of pressure change, so that different adjustment procedures can be adopted, thereby avoiding the problem of high wear and tear of equipment parts and the problem of long time spent in stabilizing pneumoperitoneum pressure after expected fluctuations, thereby improving surgical efficiency and reducing equipment wear and tear.

[0062] The method steps implemented when the computer program in the control device of the pneumoperitoneum machine described in this embodiment is executed correspond to the steps of the control method of the pneumoperitoneum machine in the first aspect. For details not included in this embodiment, please refer to the first aspect and Figures 1 to 7 The detailed description will not be repeated here.

[0063] In a fourth aspect, an embodiment of the present invention provides an insufflator, comprising a control device of the insufflator as in the third aspect; a pressure sensor for measuring the insufflator pressure; a first pressure relief valve and a second pressure relief valve for controlling the insufflator pressure relief; the control device of the insufflator is electrically connected to the pressure sensor, the first pressure relief valve and the second pressure relief valve.

[0064] In this embodiment, the control device of the insufflator inside the insufflator relies on the pressure sensor to monitor and obtain the insufflator pressure in real time, so as to judge and control the first pressure relief valve and the second pressure relief valve, so that the insufflator pressure remains stable while avoiding the high wear and tear of equipment parts and the long time taken to stabilize the insufflator pressure after expected fluctuations.

[0065] Preferably, the pneumoperitoneum machine further includes a reminder structure, which is used to send out the first to fifth reminder signals and the first and second warning signals. The reminder structure is controlled by the control device of the pneumoperitoneum machine, so that the doctor can better grasp the dynamics of the equipment and eliminate potential safety hazards in time. The reminder structure can send out any one or a combination of sound, light, text or image.

[0066] Similarly, for the details of this embodiment, please refer to the first to third aspects and Figures 1 to 8 The detailed description will not be repeated here.

[0067] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes discussed in the present invention may be alternated, modified, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and schemes discussed in the present invention may also be alternated, modified, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and schemes in the prior art that are similar to those disclosed in the present invention may also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0068] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are 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, and therefore cannot be understood as a limitation on the present invention.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0070] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

[0071] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. 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 method for an insufflator, characterized in that: The following steps are involved: Obtain monitoring pressure readings from the pneumoperitoneum machine; When the monitored pressure is greater than a first pressure threshold and is maintained for a time period greater than or equal to a first preset time period, obtaining a pressure change rate within the first preset time period; If the pressure change rate is greater than a first pressure change rate threshold, it is determined to be an expected fluctuation, and a first adjustment procedure is initiated; If the pressure change rate is less than or equal to the first pressure change rate threshold, it is determined to be a continuous change and the second adjustment procedure is started.

2. The control method 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 method 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 among the M-1 pressure change rates is taken as the pressure change rate within the first preset time period.

4. The control method 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 method 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 method 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 method 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 method 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 method 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 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.

11. A control device for an insufflator, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein the computer program implements the control method steps of the pneumoperitoneum machine according to any one of claims 1 to 9 when executed.

12. A pneumoperitoneum machine, characterized in that: A control device comprising the pneumoperitoneum machine as claimed in claim 11; 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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