技术领域technical field
本发明涉及一种医用智能压力控制方法及医用智能压力控制系统，属于医疗器械技术领域。The invention relates to a medical intelligent pressure control method and a medical intelligent pressure control system, belonging to the technical field of medical equipment.
背景技术Background technique
一些手术过程中，如经皮肾镜手术，要应用大量的生理盐水冲洗内窥镜，以保证术野清晰。如果冲洗液的压力过大，病人吸收的水量过大，就会造成水中毒。由于病人一般采用全身麻醉，临床表现不明显，主要表现为心率快，后期为心律不齐，血压波动，体温过低等。同时由于盐水的吸收过多，增加了心脏的负担，对于有心血管病史的病人，要特别注意心血管方面的表现防止心衰的发生。In some surgical procedures, such as percutaneous nephroscopic surgery, a large amount of normal saline should be used to flush the endoscope to ensure a clear surgical field. If the pressure of the irrigation fluid is too high, the patient absorbs too much water, which will cause water intoxication. Since the patient is usually under general anesthesia, the clinical manifestations are not obvious. At the same time, due to the excessive absorption of salt water, the burden on the heart is increased. For patients with a history of cardiovascular disease, special attention should be paid to the performance of cardiovascular aspects to prevent the occurrence of heart failure.
目前，在手术过程中是靠临床经验去判断，这就需要医生长时间的集中注意力，因此设计一个压力控制系统可以有效地帮助医生在手术过程中了解水压的大小，从而防止患者水中毒。At present, the judgment is based on clinical experience during the operation, which requires the doctor to concentrate for a long time, so designing a pressure control system can effectively help the doctor understand the water pressure during the operation, thereby preventing patients from water intoxication .
有鉴于此，有必要设计一套医用智能压力控制方法及医用智能压力控制系统，实现术中压力的自动化控制以解决上述问题。In view of this, it is necessary to design a set of medical intelligent pressure control method and medical intelligent pressure control system to realize the automatic control of intraoperative pressure to solve the above problems.
发明内容Contents of the invention
本发明的目的是提供一种精准的医用智能压力控制方法，能够精准的实现手术过程中如生理盐水等液体的压力控制，避免了人工靠临床经验控制产生的偏差对手术结果和患者造成影响，有助于减少医疗工作者的劳动量和降低他们的劳动强度。The purpose of the present invention is to provide an accurate medical intelligent pressure control method, which can accurately realize the pressure control of liquids such as normal saline during the operation process, and avoid the deviation caused by manual clinical experience control on the operation results and patients. Help to reduce the workload of medical workers and reduce their labor intensity.
为了解决上述技术问题，本发明采用如下技术方案：一种医用智能压力控制方法，包括如下步骤：In order to solve the above technical problems, the present invention adopts the following technical solutions: a medical intelligent pressure control method, comprising the following steps:
S1：根据手术过程中人体对生理盐水压力的承受能力，预置与人体承受能力所对应的压力阈值程序；S1: According to the human body's ability to withstand the pressure of normal saline during the operation, preset the pressure threshold program corresponding to the human body's ability to withstand;
S2：检测手术过程中所输入人体生理盐水的压力；S2: Detect the pressure of human physiological saline input during the operation;
S3：通过压力阈值程序分析S2中所检测到的压力是否在预定的阈值内，若该压力不在预定的阈值内，则将该压力值与所预定的阈值进行比对分析，根据分析结果给出调节输入人体生理盐水压力的方案指令；S3: Analyze whether the pressure detected in S2 is within the predetermined threshold through the pressure threshold program, and if the pressure is not within the predetermined threshold, compare and analyze the pressure value with the predetermined threshold, and give according to the analysis result Protocol instructions for adjusting the pressure of the input human saline;
S4：执行所述方案指令。S4: Execute the program instruction.
进一步的，所述控制方法还包括如下步骤：对S2中所检测到的压力值进行校准，消除外界干扰因素引起的零点漂移。Further, the control method further includes the following steps: calibrating the pressure value detected in S2 to eliminate zero point drift caused by external disturbance factors.
进一步的，在所述步骤S1中，所述压力阈值程序存储在移动存储器内；所述步骤S3通过控制主板执行，所述控制主板为单片机或电脑。Further, in the step S1, the pressure threshold program is stored in a mobile memory; the step S3 is executed by a control board, and the control board is a single-chip microcomputer or a computer.
进一步的，所述控制方法还包括将S2中所检测到的压力值转换为显示信号，进而显示对应的压力值。Further, the control method further includes converting the pressure value detected in S2 into a display signal, and then displaying the corresponding pressure value.
进一步的，所述控制方法还包括如下步骤：实时监测各部件的使用状态，并采集各部件的各使用状态参数；将该使用状态参数与系统内预置的使用状态阈值进行比对，判断是否有使用状态参数存在异常，如有异常，甄别出检测到异常的使用状态参数的部件名称，进而发出警报。Further, the control method also includes the following steps: monitoring the usage status of each component in real time, and collecting each usage status parameter of each component; comparing the usage status parameter with the preset usage status threshold in the system, and judging whether There is an abnormality in the use state parameter, and if there is an exception, the part name of the use state parameter that detects the abnormality is identified, and then an alarm is issued.
本发明还包括一种医用智能压力控制系统，用于手术过程中对输入人体生理盐水的压力进行控制，其包括The present invention also includes a medical intelligent pressure control system, which is used to control the pressure of physiological saline input into the human body during the operation, which includes
控制主板和设置于所述控制主板的存储器，所述存储器内预置有与手术过程中人体承受能力相适应的压力阈值程序；The control board and the memory set on the control board, the memory is preset with a pressure threshold program that is compatible with the human body's ability to withstand the operation;
检测模块，检测手术过程中所输入人体生理盐水的压力；The detection module detects the pressure of the human saline input during the operation;
信号转换和数据处理系统，将控制主板与检测模块连接，并将由检测模块所检测到的压力发送至控制主板，控制主板通过压力阈值程序分析S2中所检测到的压力是否在预定的阈值内，若该压力不在预定的阈值内，则将该压力值与所预定的阈值进行比对分析，根据分析结果给出调节输入人体生理盐水压力的方案指令；The signal conversion and data processing system connects the control board with the detection module, and sends the pressure detected by the detection module to the control board, and the control board analyzes whether the pressure detected in S2 is within the predetermined threshold through the pressure threshold program, If the pressure is not within the predetermined threshold, then compare and analyze the pressure value with the predetermined threshold, and give a program instruction for adjusting the pressure of the input human physiological saline according to the analysis result;
控制信号输出系统，与控制主板连接，接收方案指令；The control signal output system is connected with the control board to receive program instructions;
压力调节装置，与控制信号输出系统连接，由控制信号输出系统根据所接收的方案指令控制压力调节装置启动。The pressure regulating device is connected with the control signal output system, and the control signal output system controls the pressure regulating device to start according to the program instruction received.
进一步的，所述控制主板为单片机或电脑，所述存储器为与单片机或电脑连接的外置的移动存储器，或者，所述存储器为单片机或电脑内的附属存储器。Further, the control board is a single-chip microcomputer or a computer, and the memory is an external mobile memory connected to the single-chip microcomputer or the computer, or the memory is an auxiliary memory in the single-chip microcomputer or the computer.
进一步的，所述检测模块为微型压力传感器。Further, the detection module is a miniature pressure sensor.
进一步的，所述压力调节装置为蠕动泵，所述蠕动泵包括驱动器、泵头和软管。Further, the pressure regulating device is a peristaltic pump, and the peristaltic pump includes a driver, a pump head and a hose.
本发明具有以下优点：本发明的控制方法通过相比较而言，不仅能够实时监测手术过程中输入人体生理盐水的压力，还能够依据压力阈值程序进行生理盐水的压力控制，从而保证手术过程中生理盐水流量的稳定性、确保患者的安全，生理盐水压力的大小不需要人为刻意的观察，避免了人工靠临床经验控制压力产生的偏差对手术结果和患者造成影响，有助于减少医疗工作者的劳动量和降低他们的劳动强度；该控制系统的控制主板将从检测模块接受到的压力值经过压力阈值程序分析，最终向压力调节装置输出方案指令，实现了手术过程中输入人体生理盐水的压力的实时监测和自动化调节，避免了人工靠临床经验控制压力产生的偏差对手术结果和患者造成影响，有助于减少医疗工作者的劳动量和降低他们的劳动强度。The present invention has the following advantages: by comparison, the control method of the present invention can not only monitor the pressure of normal saline input into the human body during the operation in real time, but also control the pressure of the normal saline according to the pressure threshold program, thereby ensuring the physiological stability during the operation. The stability of saline flow ensures the safety of patients. The pressure of normal saline does not need to be observed artificially, which avoids the influence of manual pressure control on surgical results and patients by relying on clinical experience, and helps to reduce the burden of medical workers. Labor load and reduce their labor intensity; the control board of the control system will analyze the pressure value received from the detection module through the pressure threshold program, and finally output the program instructions to the pressure regulating device, realizing the pressure of human normal saline input during the operation. The real-time monitoring and automatic adjustment avoid the impact of manual pressure control on clinical experience on surgical results and patients, and help reduce the workload of medical workers and reduce their labor intensity.
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.
附图说明Description of drawings
图1是本发明医用智能压力控制系统的系统框架图；Fig. 1 is a system frame diagram of the medical intelligent pressure control system of the present invention;
图2是图1所示控制系统的主视图；Fig. 2 is the front view of the control system shown in Fig. 1;
图3是图1所示控制系统的侧视图；Fig. 3 is a side view of the control system shown in Fig. 1;
图4是微型压力传感器与固定件的连接结构示意图。Fig. 4 is a schematic diagram of the connection structure between the miniature pressure sensor and the fixing piece.
图中：1、控制主板；11、故障自动显示和报警模块；12、显示电路模块；2、检测模块；21、微型压力传感器；3、信号转换和数据采集模块；31、信号调理模块；32、电控箱；4、控制信号输出模块；41、电控箱；411、USB转换接口；5、压力调节装置；6、肾镜；7、固定件；8、信号线；9、支撑杆；10、卡扣。In the figure: 1. Control main board; 11. Fault automatic display and alarm module; 12. Display circuit module; 2. Detection module; 21. Miniature pressure sensor; 3. Signal conversion and data acquisition module; 31. Signal conditioning module; 32 . Electric control box; 4. Control signal output module; 41. Electric control box; 411. USB conversion interface; 5. Pressure regulating device; 6. Nephroscope; 10. Buckle.
具体实施方式Detailed ways
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
本发明一本实施例的一种医用智能压力控制方法包括如下步骤S1至S4。A medical intelligent pressure control method according to an embodiment of the present invention includes the following steps S1 to S4.
S1：根据手术过程中人体对生理盐水压力的承受能力，预置与人体承受能力所对应的压力阈值程序。该压力阈值程序存储在移动存储器内。S1: According to the human body's ability to withstand the pressure of normal saline during the operation, preset the pressure threshold program corresponding to the human body's ability to withstand it. The pressure threshold program is stored in the mobile memory.
S2：检测手术过程中输入人体生理盐水的压力，其通过微型压力传感器21检监测。监测时将微型压力传感器21置于内窥镜上，与内窥镜的前端持平，当生理盐水与内窥镜相互接触时，微型压力传感器21能够实时准确的检测到所输入生理盐水的压力。S2: Detect the pressure of the physiological saline input into the human body during the operation, which is monitored by the miniature pressure sensor 21 . When monitoring, the miniature pressure sensor 21 is placed on the endoscope, which is flat with the front end of the endoscope. When the saline and the endoscope are in contact with each other, the miniature pressure sensor 21 can accurately detect the pressure of the input saline in real time.
S3：通过压力阈值程序分析S2中所检测到的压力是否在预定的阈值内，若该压力不在预定的阈值内，则将该压力值与所预定的阈值进行比对分析，根据分析结果给出调节输入人体生理盐水压力的方案指令。该步骤通过控制主板1执行完成，该控制主板1为单片机或电脑。该控制主板1与移动存储器连接，以读取移动存储器内的压力阈值程序，在此，通过使用单片机作为控制主板1，能够实现降低整个装置的整体制造成本的目的。另外，需要说明的时。步骤S1中的压力阈值程序还可以通过计算机传输至单片机或电脑的附属存储器内。S3: Analyze whether the pressure detected in S2 is within the predetermined threshold through the pressure threshold program, and if the pressure is not within the predetermined threshold, compare and analyze the pressure value with the predetermined threshold, and give according to the analysis result Regulate protocol commands for input human saline pressure. This step is completed through the execution of the control board 1, which is a single-chip microcomputer or a computer. The control board 1 is connected with the mobile memory to read the pressure threshold program in the mobile memory. Here, by using a single-chip microcomputer as the control board 1, the purpose of reducing the overall manufacturing cost of the entire device can be achieved. In addition, when clarification is required. The pressure threshold program in step S1 can also be transferred to a single-chip microcomputer or an attached memory of a computer through a computer.
S4：执行所述方案指令。在本步骤中，需要使用到与单片机或电脑连接的控制信号输出系统4和与控制信号输出系统4连接的压力调节装置5，信号输出系统4接收方案指令，并根据所接收的方案指令控制压力调节装置5启动。该压力调节装置5为蠕动泵，蠕动泵包括驱动器、泵头和软管。方案指令具体为：若所接受的压力信号值低于预定的阈值的最低值，则加快蠕动泵输入生理盐水的速度，从而增大手术过程中输入人体内生理盐水的压力，直至所接受的压力信号值进入预定的阈值范围内，此时保持蠕动泵输入生理盐水的速度恒定；若所接受的压力信号值高于预定的阈值的最高值，则减慢蠕动泵输入生理盐水的速度，从而降低手术过程中输入人体内生理盐水的压力，直至所接受的压力信号值进入预定的阈值范围内，此时保持蠕动泵输入生理盐水的速度恒定。S4: Execute the program instruction. In this step, it is necessary to use the control signal output system 4 connected to the single-chip microcomputer or computer and the pressure regulating device 5 connected to the control signal output system 4. The signal output system 4 receives the program instruction and controls the pressure according to the received program instruction. The regulating device 5 is activated. The pressure regulating device 5 is a peristaltic pump, and the peristaltic pump includes a driver, a pump head and a hose. The program instruction is specifically: if the received pressure signal value is lower than the minimum value of the predetermined threshold, then speed up the speed of the peristaltic pump to input the normal saline, thereby increasing the pressure of the normal saline input into the human body during the operation until the accepted pressure When the signal value enters the predetermined threshold range, keep the speed of the peristaltic pump inputting normal saline constant; if the received pressure signal value is higher than the highest value of the predetermined threshold, slow down the speed of the peristaltic pump inputting normal saline, thereby reducing During the operation, the pressure of physiological saline in the human body is input until the received pressure signal value enters a predetermined threshold range, and at this time, the speed of inputting physiological saline by the peristaltic pump is kept constant.
所述控制方法还包括如下步骤：对S2中所检测到的压力值进行校准，防止传感器探头因操作不当或干扰等原因引起的零点漂移。The control method further includes the following steps: calibrating the pressure value detected in S2 to prevent zero drift of the sensor probe caused by improper operation or interference.
所述控制方法还包括将输入人体内生理盐水的压力转换为显示信号，进而显示对应的压力值，该压力值可以通过显示电路显示，该显示电路具有显示屏。The control method also includes converting the pressure of the physiological saline input into the human body into a display signal, and then displaying the corresponding pressure value. The pressure value can be displayed by a display circuit, and the display circuit has a display screen.
所述控制方法还包括如下步骤：实时监测各部件的使用状态，并采集各部件的各使用状态参数；将该使用状态参数与系统内预置的使用状态阈值进行比对，判断是否有使用状态参数存在异常，如有异常，甄别出检测到异常的使用状态参数的部件名称，进而发出警报，其警报可以通过故障自动显示和报警系统执行完成。The control method also includes the following steps: monitoring the usage status of each component in real time, and collecting each usage status parameter of each component; comparing the usage status parameter with the preset usage status threshold in the system, and judging whether there is a usage status If the parameters are abnormal, if there is any abnormality, the component name of the abnormal use status parameter is identified, and then an alarm is issued. The alarm can be completed through the automatic display of the fault and the execution of the alarm system.
参见图1至图3所示，用以上述控制方法的医用智能压力控制系统，该系统用于手术过程中对输入人体生理盐水的压力进行控制。该系统包括控制主板1和设置于控制主板1的存储器，该控制主板1采用电脑或单片机，采用单片机时本系统制造成本低廉，存储器内预置有与手术过程中人体承受能力相对应的压力阈值程序，该压力阈值程序能够针对病人不同的身体状况进行参数的调整，且控制主板1内具有故障自动显示和报警系统11和显示电路12；检测模块2，采用微型压力传感器21检测手术过程中所输入人体生理盐水的压力；信号转换和数据处理系统3采用信号调理模块31和电控箱32，信号调理模块31通过信号线8分别与微型压力传感器21和电控箱32，电控箱32具有USB转换接口321和电源接口，电控箱32通过USB转换接口321与控制主板1连接，信号调理模块31和电控箱32将由微型压力传感器21所检测到的压力发送至控制主板1，控制主板1通过压力阈值程序分析所检测到的压力是否在预定的阈值内，若该压力不在预定的阈值内，则将该压力值与所预定的阈值进行比对分析，根据分析结果给出调节输入人体生理盐水压力的方案指令；控制信号输出系统4，与控制主板1连接，接收方案指令；压力调节装置5采用蠕动泵，与控制信号输出系统4连接，由控制信号输出系统4根据所接收的方案指令控制压力调节装置5启动。Referring to Fig. 1 to Fig. 3, the medical intelligent pressure control system using the above control method is used to control the pressure of physiological saline input into the human body during the operation. The system includes a control board 1 and a memory arranged on the control board 1. The control board 1 adopts a computer or a single-chip microcomputer. When the single-chip microcomputer is used, the manufacturing cost of the system is low, and the pressure threshold corresponding to the human body's ability to withstand the operation is preset in the memory. program, the pressure threshold program can adjust the parameters according to the different physical conditions of the patient, and the control board 1 has an automatic fault display and alarm system 11 and a display circuit 12; the detection module 2 uses a miniature pressure sensor 21 to detect the Input the pressure of human physiological saline; Signal conversion and data processing system 3 adopt signal conditioning module 31 and electric control box 32, and signal conditioning module 31 is respectively connected with miniature pressure sensor 21 and electric control box 32 by signal line 8, and electric control box 32 has USB conversion interface 321 and power supply interface, electric control box 32 is connected with control mainboard 1 by USB conversion interface 321, and signal conditioning module 31 and electric control box 32 send the pressure detected by miniature pressure sensor 21 to control mainboard 1, control mainboard 1. Analyze whether the detected pressure is within the predetermined threshold through the pressure threshold program. If the pressure is not within the predetermined threshold, compare and analyze the pressure value with the predetermined threshold, and provide adjustment input to the human body according to the analysis result. The program instruction of normal saline pressure; the control signal output system 4 is connected with the control board 1 to receive the program instruction; the pressure regulating device 5 adopts a peristaltic pump and is connected with the control signal output system 4, and the control signal output system 4 is used according to the received program The command controls the pressure regulating device 5 to start.
所述控制主板1为单片机或电脑，存储器为与单片机或电脑连接的外置的移动存储器，或者，存储器为单片机或电脑内的附属存储器。检测模块2采用微型压力传感器21。The control main board 1 is a single-chip microcomputer or a computer, and the memory is an external mobile memory connected with the single-chip microcomputer or the computer, or the memory is an auxiliary memory in the single-chip microcomputer or the computer. The detection module 2 adopts a miniature pressure sensor 21 .
所述压力调节装置5为蠕动泵，蠕动泵包括驱动器、泵头和软管。蠕动泵使用时流体被隔离在泵管中，具有能够快速更换泵管、流体逆行、干运转等特点，因此蠕动泵作为该压力控制系统的压力调节装置5具备了故障排出快、流速调节快速灵活等优点。当冲洗盐水与肾镜6前端相互接触时，水压压力值同时通过微型压力传感器21反馈，压力值的大小会实时在电脑界面显示。术前医生可以在电脑端或单片机设定水压安全控制参数，当手术时水流量压力值与设定安全参数不相符合时就会实时信号反馈，此时蠕动泵就会根据需要自行执行流量控制命令，适当控制水流量的大小从而改变水压。The pressure regulating device 5 is a peristaltic pump, and the peristaltic pump includes a driver, a pump head and a hose. When the peristaltic pump is in use, the fluid is isolated in the pump tube, which has the characteristics of quick replacement of the pump tube, reverse flow of fluid, and dry operation. Therefore, the peristaltic pump, as the pressure adjustment device 5 of the pressure control system, has the advantages of fast fault discharge and fast and flexible flow rate adjustment. Etc. When flushing saline and the front end of the nephroscope 6 contact each other, the water pressure value is fed back through the miniature pressure sensor 21 simultaneously, and the size of the pressure value can be displayed on the computer interface in real time. Before the operation, the doctor can set the water pressure safety control parameters on the computer terminal or the single-chip microcomputer. When the water flow pressure value does not match the set safety parameters during the operation, real-time signal feedback will be sent. At this time, the peristaltic pump will automatically execute the flow rate according to the needs. Control commands, properly control the size of the water flow to change the water pressure.
下面通过具体实施例，对上述控制方法和控制系统进行说明：The above-mentioned control method and control system are described below through specific embodiments:
当进行经皮肾镜手术时，将微型压力传感器21和肾镜6并排安装在固定件7的前端，当固定件为手术导管时，由于手术导管内径一般在8mm以下，肾镜直径约4mm，所以微型压力传感器21的直径在3mm以下；当然，如图4所示，微型传感器21固定在支撑杆9上，信号线8安装在支撑杆9内连接微型传感器21和信号调理模块31，支撑杆8通过卡扣10固定在固定件7上，同样可行。当生理盐水接触肾镜时，同时接触到微型压力传感器21，因此该微型压力传感器21能够实时监测生理盐水的压力，并将压力值通过信号线8依次传输给信号调理模块31、电控箱32、控制主板1，控制主板1首先对所检测到的压力值进行校准，消除因传感器探头操作不当或其它干扰因素引起的零点漂移，同时将所检测到的压力值校准结果转换为显示信号，进而启动显示电路12并在显示电路12的显示屏上显示对应的压力值，然后通过压力阈值程序分析S2中所检测到的压力是否在预定的阈值内，若该压力不在预定的阈值内，则将该压力值与所预定的阈值进行比对分析且结合PID闭环控制算法，根据计算结果给出调节输入人体生理盐水压力的方案指令。When performing percutaneous nephroscopic surgery, the miniature pressure sensor 21 and the nephroscope 6 are installed side by side on the front end of the fixture 7. When the fixture is a surgical catheter, since the internal diameter of the surgical catheter is generally below 8mm, the nephroscopic diameter is about 4mm. So the diameter of miniature pressure sensor 21 is below 3mm; Of course, as shown in Figure 4, miniature sensor 21 is fixed on the support bar 9, and signal wire 8 is installed in support bar 9 and connects miniature sensor 21 and signal conditioning module 31, and support bar 8 is fixed on the fixing member 7 by buckle 10, which is also feasible. When the physiological saline contacts the nephroscope, it also touches the miniature pressure sensor 21 at the same time, so the miniature pressure sensor 21 can monitor the pressure of the physiological saline in real time, and transmit the pressure value to the signal conditioning module 31 and the electric control box 32 sequentially through the signal line 8 1. The control board 1, the control board 1 first calibrates the detected pressure value, eliminates the zero point drift caused by improper operation of the sensor probe or other interference factors, and at the same time converts the detected pressure value calibration result into a display signal, and then Start the display circuit 12 and display the corresponding pressure value on the display screen of the display circuit 12, then analyze whether the pressure detected in S2 is within the predetermined threshold through the pressure threshold program, if the pressure is not within the predetermined threshold, the The pressure value is compared with the predetermined threshold and combined with the PID closed-loop control algorithm, according to the calculation result, a program instruction for adjusting the pressure of the input human physiological saline is given.
上述PID闭环控制算法如下所示：The above PID closed-loop control algorithm is as follows:
定义u(t)为蠕动泵的流量控制输出。Kp为比例系数，Ki为积分系数，Kd为微分系数，该三个系数由系统通过学习算法自整定。t为积分时间，e(t)为设定水压和水压检测实际值的差值。Define u(t) as the flow control output of the peristaltic pump. Kp is a proportional coefficient, Ki is an integral coefficient, and Kd is a differential coefficient, and these three coefficients are self-tuned by the system through a learning algorithm. t is the integral time, and e(t) is the difference between the set water pressure and the actual value detected by the water pressure.
执行所述方案指令。在本步骤中，需要使用到与单片机或电脑连接的控制信号输出系统4和与控制信号输出系4统连接的压力调节装置5，信号输出系统4接收方案指令，并根据所接收的方案指令控制压力调节装置5启动。该压力调节装置5为蠕动泵，蠕动泵包括驱动器、泵头和软管。方案指令具体为：若所接受的压力信号值低于预定的阈值的最低值，则参考计算结果加快蠕动泵输入生理盐水的速度，从而增大手术过程中输入人体内生理盐水的压力，直至所接受的压力信号值进入预定的阈值范围内，保持此时蠕动泵输入生理盐水的速度恒定；若所接受的压力信号值高于预定的阈值的最高值，则参考计算结果减慢蠕动泵输入生理盐水的速度，从而降小手术过程中输入人体内生理盐水的压力，直至所接受的压力信号值进入预定的阈值范围内，保持此时蠕动泵输入生理盐水的速度恒定。Execute the program directive. In this step, it is necessary to use the control signal output system 4 connected to the single-chip microcomputer or the computer and the pressure regulating device 5 connected to the control signal output system 4. The signal output system 4 receives the program instruction and controls it according to the received program instruction. The pressure regulator 5 is activated. The pressure regulating device 5 is a peristaltic pump, and the peristaltic pump includes a driver, a pump head and a hose. The program instruction is specifically: if the received pressure signal value is lower than the minimum value of the predetermined threshold, then refer to the calculation result to speed up the speed of the peristaltic pump inputting the normal saline, thereby increasing the pressure of the normal saline input into the human body during the operation until the When the received pressure signal value enters the predetermined threshold range, keep the speed at which the peristaltic pump inputs physiological saline at this time constant; if the accepted pressure signal value is higher than the highest value of the predetermined threshold, refer to the calculation result to slow down the peristaltic pump input physiological saline. The speed of the saline, so as to reduce the pressure of the saline input into the human body during the operation, until the received pressure signal value enters the predetermined threshold range, and keep the speed of the saline input by the peristaltic pump constant at this time.
在上述过程中，控制主板1具有故障自动显示和报警系统11，故障自动显示和报警系统11实时监测各部件的使用状态，并采集各部件的各使用状态参数；将该使用状态参数与系统内预置的使用状态阈值进行比对，判断是否有使用状态参数存在异常，如有异常，甄别出检测到异常的使用状态参数的部件名称，进而，启动故障自动显示和报警系统将故障部件名称显示并发出警报。In the above-mentioned process, control main board 1 has fault automatic display and alarm system 11, and fault automatic display and alarm system 11 real-time monitors the use state of each part, and gathers each use state parameter of each part; Compare the preset usage status thresholds to determine whether there are any abnormalities in the usage status parameters. If there is any abnormality, identify the component name of the abnormal usage status parameter, and then start the automatic fault display and alarm system to display the name of the faulty component And sound the alarm.
综上所述，本发明的控制方法和控制系统通过相比较而言，不仅能够实时监测手术过程中输入人体生理盐水的压力，还能够依据压力阈值程序结合PID闭环控制算法自动进行蠕动泵的流量控制，从而保证手术过程中生理盐水流量的稳定性、确保患者的安全，生理盐水压力的大小不需要人为刻意的观察，避免了人工靠临床经验控制压力产生的偏差对手术结果和患者造成影响，有助于减少医疗工作者的劳动量和降低他们的劳动强度。该控制系统的控制主板将从检测模块2接受到的压力值经过压力阈值程序分析，最终向压力调节装置5输出方案指令，实现了手术过程中输入人体生理盐水的压力的实时监测和自动化调节，避免了人工靠临床经验控制压力产生的偏差对手术结果和患者造成影响，有助于减少医疗工作者的劳动量和降低他们的劳动强度。To sum up, the control method and control system of the present invention can not only monitor the pressure of normal saline input into the human body during the operation in real time, but also automatically control the flow rate of the peristaltic pump according to the pressure threshold program combined with the PID closed-loop control algorithm. Control, so as to ensure the stability of the saline flow during the operation and ensure the safety of the patient. The pressure of the saline does not need to be observed artificially, which avoids the influence of the deviation of the manual pressure control on the operation result and the patient by relying on clinical experience. Help to reduce the workload of medical workers and reduce their labor intensity. The control board of the control system analyzes the pressure value received from the detection module 2 through the pressure threshold program, and finally outputs the program instruction to the pressure regulating device 5, realizing the real-time monitoring and automatic adjustment of the pressure of the human physiological saline input during the operation, It avoids the influence of the deviation caused by manual pressure control based on clinical experience on the operation results and patients, and helps to reduce the workload of medical workers and reduce their labor intensity.
以上所述仅是本发明的优选实施方式，并不用于限制本发明，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. It should be pointed out that for those of ordinary skill in the art, some improvements can be made without departing from the technical principle of the present invention. and modifications, these improvements and modifications should also be considered as the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
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| CN201510113046.9ACN104714568A (en) | 2015-03-16 | 2015-03-16 | Medical intelligent pressure control method and system |
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| CN201510113046.9ACN104714568A (en) | 2015-03-16 | 2015-03-16 | Medical intelligent pressure control method and system |
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| CN201510113046.9APendingCN104714568A (en) | 2015-03-16 | 2015-03-16 | Medical intelligent pressure control method and system |
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