Cerebrospinal fluid drainage device and drainage method

Abstract

The present application discloses a cerebrospinal fluid drainage device and a drainage method. The cerebrospinal fluid drainage device includes a drainage pipeline, a flow rate sensor, a flow rate regulator, and a drainage control system. The drainage control system includes a human-computer interaction module and a drainage control module. The human-computer interaction module is used to input an expected flow rate / flow rate range and an expected drainage volume, record and display patient personal information, treatment information, historical cerebrospinal fluid flow rate, current cerebrospinal fluid flow rate, and is used to judge the drainage state according to the current cerebrospinal fluid drainage volume and the real-time liquid flow rate. The drainage control module controls the flow rate regulator according to the current drainage state so that the real-time liquid flow rate is equal to the expected flow rate or falls within the expected flow rate range, or controls the suspension / end of the current drainage. The structure of the present application is simple. By directly transforming the traditional cerebrospinal fluid drainage device, automatic cerebrospinal fluid drainage with automatic pressure regulation and speed regulation can be realized, with high pressure and speed control accuracy, reliable products, and convenient use.

Description

Technical Field

[0001] This application relates to the field of medical devices, and particularly to a cerebrospinal fluid drainage device and a drainage method. Background Art

[0002] In clinical medicine, extracorporeal cerebrospinal fluid drainage is a safe, effective, minimally invasive method for treating neurosurgical diseases such as cerebrospinal fluid leakage, intracranial infection, and subarachnoid hemorrhage; it has good curative effects on the treatment of severe craniocerebral injury postoperative, traumatic subarachnoid hemorrhage, various intractable cerebrospinal fluid otorrhea, rhinorrhea, and incision leakage, intracranial infection, intractable subcutaneous fluid accumulation, and communicating hydrocephalus.

[0003] Extracorporeal cerebrospinal fluid drainage refers to inserting a drainage tube into the cerebral ventricle and continuously draining cerebrospinal fluid. Firstly, it can reduce intracranial pressure, and secondly, it can promote the drainage of inflammatory cerebrospinal fluid, achieving the effect of cleaning cerebrospinal fluid and assisting in the treatment of ventricular inflammation. For cerebrospinal fluid leakage, it is necessary to strictly control the drainage volume to avoid excessive drainage volume, which may further exacerbate the symptoms of low intracranial pressure and even cause serious complications such as epidural hemorrhage and brain hernia, endangering the patient's life.

[0004] During the drainage operation process, how to accurately and safely control the cerebrospinal fluid drainage speed and drainage volume is a difficult problem. The traditional method is to adjust the drainage volume by manually adjusting the relative height of the drainage tube, but the relative height is very difficult to accurately control, which is likely to cause too fast or excessive drainage. If the cerebrospinal fluid drainage speed is too fast, the intracranial pressure will drop sharply, which may lead to serious complications such as encephalopathy; excessive cerebrospinal fluid drainage may lead to complications such as low intracranial pressure headache. At the same time, during the drainage process, since the patient is generally in an unconscious state, he / she will uncontrollably turn over and other activities, which are particularly likely to cause stretching of the drainage pipeline, thereby causing a change in the position of the drainage pipeline in the patient's intracranial cavity, further affecting the drainage effect and increasing the nursing difficulty of the patient. During the existing cerebrospinal fluid drainage process, in order to balance the intracranial pressure, medical staff need to continuously adjust the height of the drainage pot to maintain the drainage speed and height of cerebrospinal fluid or hematoma, which increases the complexity of the operation of medical staff and the requirements for the number of medical staff.

[0005] Chinese Patent Application for Invention CN201710336168.3 discloses a cerebrospinal fluid drainage device, and Chinese Patent Application for Invention CN201711287381.6 discloses a mechanical cerebrospinal fluid drainage pressure regulating device. Both of these patent applications achieve the drainage speed control of cerebrospinal fluid through mechanical means, but the mechanical speed control method depends on the system design accuracy and the structure design is very complex. Chinese Patent Application for Invention CN201810114034.1 discloses an intracranial cerebrospinal fluid automatic drainage device, which controls the cerebrospinal fluid drainage flow rate by measuring intracranial pressure and arterial pressure, requires a large amount of data collection, has a complex structure, and is likely to bring inconvenience to patients during the drainage process. Summary of the Invention

[0006] In view of this, it is necessary to provide a cerebrospinal fluid drainage device and a drainage method with a simple structure.

[0007] To solve the above technical problems, the present application provides a cerebrospinal fluid drainage device, which includes a drainage pipeline, a flow rate sensor, a flow regulator, and a drainage control system. The drainage pipeline includes a drainage bag for temporarily storing cerebrospinal fluid. The flow rate sensor is used to collect the real-time liquid flow rate in the drainage bag. The drainage control system includes a human-computer interaction module and a drainage control module. The human-computer interaction module includes a display unit and a calculation unit. The display unit is used to input the desired flow rate / flow rate range and the desired drainage volume, record and display the patient's personal information, treatment information, historical cerebrospinal fluid flow rate, and current cerebrospinal fluid flow rate. The calculation unit is used to calculate the current cerebrospinal fluid drainage volume, compare the current cerebrospinal fluid drainage volume with the desired drainage volume, and compare the real-time liquid flow rate with the desired flow rate / flow rate range to judge the current drainage state. The drainage control module controls the flow regulator according to the current drainage state to make the real-time liquid flow rate equal to the desired flow rate or fall within the desired flow rate range, or control the suspension / end of the current drainage.

[0008] Wherein, the human-computer interaction module further includes an alarm unit. When the real-time liquid flow rate is greater than the maximum value of the desired flow rate / flow rate range, the alarm unit displays the alarm information.

[0009] Wherein, the alarm unit is further used to give a warning by voice or warning light when the real-time liquid flow rate is greater than the maximum value of the desired flow rate / flow rate range.

[0010] Wherein, the number of the drainage bags is at least two, which are arranged at intervals on the drainage pipeline and connected by a drainage tube. The flow rate sensor corresponds to the drainage bag one by one. The display unit is further used to input the flow rate difference threshold between different drainage bags. The calculation unit is further used to calculate the real-time flow rate difference between different drainage bags, and compare the real-time flow rate difference with the flow rate difference threshold to judge the current drainage state. When the real-time flow rate difference is greater than the flow rate difference threshold, the drainage control module controls the suspension of the current drainage.

[0011] Wherein, the flow regulator includes an adjusting member, a motor, and a lead screw. The adjusting member is connected to the drainage tube of the drainage pipeline. The drainage control module is used to control the motor of the flow regulator, and then drive the lead screw connected to the adjusting member to adjust the speed.

[0012] Among them, the display unit is further configured to collect real-time pulse and / or respiration information of the patient and to input the information fluctuation threshold of the patient's pulse and / or respiration. The calculation unit is further configured to calculate the real-time information fluctuation value of the patient's pulse and / or respiration, and compare the real-time information fluctuation value with the information fluctuation threshold to determine the current drainage state. When the real-time information fluctuation value is greater than the information fluctuation threshold, the drainage control module controls the suspension of the current drainage. To solve the above technical problems, the present application also provides a cerebrospinal fluid drainage method, which is implemented based on the above-mentioned cerebrospinal fluid drainage device; the cerebrospinal fluid drainage method includes:

[0013] Input the patient ID, and search for the patient's historical drainage information through the human-machine interaction module,

[0014] Input the desired flow rate / flow rate range through the human-machine interaction module;

[0015] Combine the real-time liquid flow rate collected by the flow rate sensor and the desired flow rate / flow rate range set by the human-machine interaction module to control the flow rate regulator to achieve closed-loop control of the real-time liquid flow rate;

[0016] The flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range;

[0017] In the above process, the flow rate sensor synchronously feeds back the collected real-time liquid flow rate to the drainage control module, so as to form a closed-loop control among the drainage control module, the flow rate regulator and the drainage tube.

[0018] Among them, before the step of inputting the desired flow rate / flow rate range through the human-machine interaction module, it further includes:

[0019] Select the manual desired cerebrospinal fluid flow rate mode or the autonomous desired cerebrospinal fluid flow rate mode.

[0020] Among them, when the manual desired cerebrospinal fluid flow rate mode is selected, the method further includes:

[0021] Input the desired drainage volume and the flow rate difference threshold between different drainage bags through the human-machine interaction module;

[0022] The step that the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range is specifically: the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate;

[0023] After the step that the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate, it further includes:

[0024] Judge whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold;

[0025] If not, determine whether the real-time liquid flow rate is equal to the desired flow rate.

[0026] If so, when the calculated cerebrospinal fluid drainage volume for this time is greater than the desired drainage volume, control the end of the drainage for this time.

[0027] If the result of determining whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, pause the drainage.

[0028] If the result of determining whether the real-time liquid flow rate is equal to the desired flow rate is no, control the real-time liquid flow rate to be equal to the desired flow rate.

[0029] If the result of determining whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of determining whether the real-time liquid flow rate is equal to the desired flow rate is no, execute at least one of the following alarm schemes:

[0030] Display an alarm message through the display unit of the human-computer interaction module.

[0031] The alarm unit of the human-computer interaction module gives a warning through voice or a warning light.

[0032] Wherein, when the autonomous desired cerebrospinal fluid flow rate mode is selected, the method further includes:

[0033] Input the desired drainage volume, the flow rate difference threshold between different drainage bags, the information fluctuation threshold of the patient's pulse and / or respiration through the human-computer interaction module.

[0034] The step of the flow regulator adjusting the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range is specifically: the flow regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the desired flow rate range, and adjusts the flow rate in real time in combination with the patient's respiration and / or pulse information.

[0035] After the step of the flow regulator adjusting the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the desired flow rate range and adjusting the flow rate in real time in combination with the patient's respiration and / or pulse information, the following steps are further included:

[0036] Determine whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold.

[0037] If not, determine whether the real-time liquid flow rate is equal to the desired flow rate.

[0038] If so, determine whether the real-time information fluctuation value of the patient's pulse and / or respiration is greater than the information fluctuation threshold. If not, when the calculated cerebrospinal fluid drainage volume for this time is greater than the desired drainage volume, control the end of the drainage for this time.

[0039] If the result of determining whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of determining that the fluctuation value of the real-time information of the patient's pulse and / or respiration is greater than the information fluctuation threshold is yes, then the drainage is paused;

[0040] If the result of determining whether the real-time liquid flow rate falls within the desired flow rate is no, then control the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the desired flow rate range, and adjust the flow rate in real time in combination with the patient's respiration and / or pulse information;

[0041] If the result of determining whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of determining whether the real-time liquid flow rate is equal to the desired flow rate is no, or the result of determining that the fluctuation value of the real-time information of the patient's pulse and / or respiration is greater than the information fluctuation threshold is yes, then execute at least one of the following alarm schemes:

[0042] Display an alarm message through the display unit of the human-computer interaction module;

[0043] The alarm unit of the human-computer interaction module gives a warning through voice or a warning light.

[0044] Compared with the prior art, the cerebrospinal fluid drainage device of the present application uses a flow rate sensor to detect the liquid flow rate in the drainage tube in real time and feeds the data back to the drainage control module. The drainage control module combines the real-time liquid flow rate collected by the flow rate sensor and the desired cerebrospinal fluid flow rate / flow rate range set by the human-computer interaction module to control the flow rate regulator and then adjust the liquid flow rate of the drainage tube, so that the real-time liquid flow rate is equal to the desired flow rate / falls within the desired cerebrospinal fluid flow rate range, forming a closed-loop control between the drainage control module, the flow rate regulator and the drainage tube. The structure of the present application is simple. By directly transforming the traditional cerebrospinal fluid drainage device, automatic cerebrospinal fluid drainage, automatic pressure regulation and speed regulation can be achieved, the cerebrospinal fluid will not be contaminated, the pressure control and speed control accuracy is high, the product is reliable, and it is convenient to use. Description of the Drawings

[0045] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0046] Figure 1 is a schematic structural diagram of a preferred embodiment of the cerebrospinal fluid drainage device of the present application;

[0047] Figure 2 is a flowchart of a preferred embodiment of the cerebrospinal fluid drainage method of the present application;

[0048] Figure 3 is a flowchart of another preferred embodiment of the cerebrospinal fluid drainage method of the present application;

[0049] Figure 4 This is a schematic diagram of the closed-loop control during the cerebrospinal fluid drainage process of this application. Specific embodiments

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments of this application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments.

[0051] Figure 1 This is a schematic structural diagram of a preferred embodiment of the cerebrospinal fluid drainage device of this application, including a drainage tube 1, a flow rate sensor 2, a flow regulator (not labeled), and a drainage control system 4.

[0052] The drainage pipeline 1 includes a drainage tube and drainage bags 11 and 12 that are connected to the drainage tube and used to temporarily store cerebrospinal fluid. A certain amount of cerebrospinal fluid is stored in the drainage bags, which can prevent the backflow of cerebrospinal fluid.

[0053] Flow rate sensors 21 and 22 are respectively fixed on the outer sides of the drainage bags 11 and 12, and are respectively used to collect the real-time liquid flow rates in the drainage bags 11 and 12, and feed the data back to the drainage control system 4. Preferably, the flow rate sensor 2 is an optoelectronic sensor, which is used to collect the number of liquid drops in the drainage tube 1 per unit time (i.e., the real-time liquid flow rate) in real time, and feed the data back to the drainage control system 4. The optoelectronic sensor has the characteristics of fast response speed, high measurement accuracy, anti-static and anti-pulse interference, and small measurement error.

[0054] The flow regulator is used to adjust the flow rate of cerebrospinal fluid in the drainage tube. The flow regulator includes an adjusting member 31, a motor 32, and a lead screw 33. The adjusting member 31 is connected to the drainage tube 2. The motor 32 is connected to the drainage control system 4 and the lead screw 33. The drainage control system 4 can drive the motor 32 to drive the lead screw 33 connected to the adjusting member 31 to adjust the speed.

[0055] The drainage control system 4 includes a human-computer interaction module and a drainage control module.

[0056] The human-machine interaction module includes a display unit and a calculation unit. The display unit selects the manual / autonomous expected cerebrospinal fluid flow rate mode, inputs the expected flow rate / flow rate range and the expected drainage volume, records and displays the patient's personal information, treatment information, historical cerebrospinal fluid flow rate, and current cerebrospinal fluid flow rate. The calculation unit is used to calculate the current cerebrospinal fluid drainage volume, compare the current cerebrospinal fluid drainage volume with the expected drainage volume, and compare the real-time liquid flow rate with the expected flow rate / flow rate range to judge the current drainage state. The drainage control module controls the flow regulator according to the current drainage state to make the real-time liquid flow rate fall within the expected flow rate / flow rate range or control the suspension / end of the current drainage, realizing real-time closed-loop control of the drainage process. The expected flow rate range includes the patient's historical cerebrospinal fluid flow rate value. Therefore, when in use, the doctor can select the historical cerebrospinal fluid flow rate of the corresponding patient through the human-machine interaction module or directly input the expected flow rate.

[0057] The human-machine interaction module further includes an alarm unit. When the real-time liquid flow rate is greater than the maximum value of the expected flow rate / flow rate range, the alarm unit displays the alarm information. The alarm unit is also used to give a warning through voice or a warning light when the real-time liquid flow rate is greater than the maximum value of the expected flow rate / flow rate range.

[0058] Preferably, the number of drainage bags is at least two, which are arranged at intervals on the drainage pipeline 1 and are connected by drainage tubes. The flow rate sensors correspond to the drainage bags one by one. Therefore, the display unit is also used to input the flow rate difference threshold between different drainage bags, and the calculation unit is also used to calculate the real-time flow rate difference between different drainage bags and compare the real-time flow rate difference with the flow rate difference threshold to judge the current drainage state. When the real-time flow rate difference is greater than the flow rate difference threshold, the drainage control module controls the suspension of the current drainage.

[0059] In this embodiment, the number of drainage bags is 2, which are located at both ends of the drainage tube respectively. Each drainage bag is equipped with a flow rate sensor for detecting the liquid flow rate at different positions of the drainage bag. When the drainage control module sends the liquid flow rates at different positions of the drainage bag to the human-machine interaction module in real time, the calculation unit of the human-machine interaction module compares the flow rates of the drainage bags at different positions in real time. When the real-time flow rate difference between the drainage bags at different positions is greater than the flow rate difference threshold, it is determined that the drainage is unqualified, specifically including unsmooth drainage, blocked drainage tube, twisted drainage tube, leaking drainage tube, etc.

[0060] The human-computer interaction module is also provided with an interface for patient pulse and respiration information. When the autonomous expected cerebrospinal fluid flow rate mode is selected, the display unit is further configured to collect the real-time pulse and / or respiration information of the patient and to input the information fluctuation threshold of the patient's pulse and / or respiration. The calculation unit is further configured to calculate the real-time information fluctuation value of the patient's pulse and / or respiration, and compare the real-time information fluctuation value with the information fluctuation threshold to determine the current drainage state. When the real-time information fluctuation value is greater than the information fluctuation threshold, it is determined that the patient is uncomfortable / non-cooperative, and the drainage control module controls the suspension of the current drainage.

[0061] The display unit of the human-computer interaction module can also automatically store information such as the patient's drainage time and historical drainage speed according to the patient ID at the end of a single drainage. Next time when draining, the human-computer interaction module can automatically retrieve the patient's previous drainage information according to the patient ID and display it to the operating doctor. The doctor can manually set the current drainage speed or set the drainage range according to the previous drainage information, and the human-computer interaction module automatically adjusts the drainage flow rate.

[0062] The drainage control module can read in real time the real-time liquid flow rate collected by the flow rate sensor and the expected flow rate / flow rate range set based on the human-computer interaction module, and adjust the flow regulator in combination with the real-time liquid flow rate and the expected flow rate / flow rate range, so that the real-time liquid flow rate is equal to the expected flow rate or falls within the expected flow rate range. Specifically, when the real-time liquid flow rate is less than the minimum value of the expected cerebrospinal fluid flow rate range, the drainage control module drives the flow regulator to increase the real-time liquid flow rate to within the expected cerebrospinal fluid flow rate range; when the real-time liquid flow rate is greater than the maximum value of the expected cerebrospinal fluid flow rate range, the drainage control module drives the flow regulator to decrease the real-time liquid flow rate to within the expected cerebrospinal fluid flow rate range. The adjustment process of the real-time liquid flow rate is as follows: the drainage control module drives the motor 32 of the flow regulator, and then drives the lead screw 33 connected to the adjusting member 31 to adjust the speed. The scheme of using a motor to drive the lead screw for speed adjustment can make the whole speed adjustment process smoother and avoid accidents during the drainage process.

[0063] In the above process, the flow rate sensor 2 always synchronously feeds back the collected real-time liquid flow rate to the drainage control module, so that a closed-loop control is formed among the drainage control module, the flow regulator 3 and the drainage tube 1.

[0064] When the real-time liquid flow rate is greater than the maximum value of the desired cerebrospinal fluid flow rate range, the drainage control module can send an alarm message to the human-machine interaction module, which is displayed by the display unit of the human-machine interaction module; or it can be sent to the alarm unit, and the alarm unit issues an alarm by means of voice broadcast or warning light display; alternatively, the drainage control module can force the cerebrospinal fluid drainage device to pause the drainage work. The above three methods can be carried out synchronously or alternatively to ensure the physical safety of the patient. The cerebrospinal fluid drainage device of the present application is provided with a multiple protection system, which can realize warnings and protection in various dangerous situations such as too fast real-time liquid flow rate through the display unit of the human-machine interaction module, the alarm unit giving an alarm, and forcing the cerebrospinal fluid drainage device to stop the drainage work, etc., with high reliability and avoiding treatment accidents caused by human operation errors.

[0065] The present application also provides a cerebrospinal fluid drainage method implemented based on the above cerebrospinal fluid drainage device. The cerebrospinal fluid drainage method includes:

[0066] S01, input the patient ID, and search for the patient's historical drainage information through the human-machine interaction module;

[0067] S10, input the desired flow rate / flow rate range through the human-machine interaction module;

[0068] The desired flow rate / flow rate range includes the patient's historical drainage flow rate.

[0069] S20, combine the real-time liquid flow rate collected by the flow rate sensor and the desired flow rate / flow rate range set by the human-machine interaction module to control the flow rate regulator to achieve closed-loop control of the real-time liquid flow rate;

[0070] S30, the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range;

[0071] This step specifically includes: the drainage control module controls the motor of the flow rate regulator, and then drives the lead screw connected to the adjusting part to adjust the speed.

[0072] In the above process, the flow rate sensor synchronously feeds back the collected real-time liquid flow rate to the drainage control module, so as to form a closed-loop control among the drainage control module, the flow rate regulator and the drainage pipe.

[0073] S40, after the cerebrospinal fluid drainage is completed, select to stop the drainage work through the human-machine interaction module, and the drainage control module records the patient's current drainage information.

[0074] Before the step of inputting the desired flow rate / flow rate range through the human-machine interaction module, it further includes:

[0075] Select the manual desired cerebrospinal fluid flow rate mode or the autonomous desired cerebrospinal fluid flow rate mode.

[0076] Specifically, please also combine with Figure 2 the flowchart of the cerebrospinal fluid drainage method for selecting the manually desired cerebrospinal fluid flow rate mode shown in Figure 3 and the flowchart of the cerebrospinal fluid drainage method for selecting the autonomously desired cerebrospinal fluid flow rate mode shown in

[0077] When selecting the manually desired cerebrospinal fluid flow rate mode, the method further includes:

[0078] Inputting the desired drainage volume and the flow rate difference threshold between different drainage bags through the man-machine interaction module;

[0079] The step of the flow rate regulator adjusting the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range is specifically: the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate;

[0080] After the step of the flow rate regulator adjusting the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate, the method further includes:

[0081] Judging whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold;

[0082] If not, then judging whether the real-time liquid flow rate is equal to the desired flow rate,

[0083] If so, when calculating that the cerebrospinal fluid drainage volume of this time is greater than the desired drainage volume, controlling the end of the drainage of this time;

[0084] If the result of judging whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, then pause the drainage;

[0085] If the result of judging whether the real-time liquid flow rate is equal to the desired flow rate is no, then controlling the real-time liquid flow rate to be equal to the desired flow rate;

[0086] If the result of judging whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of judging whether the real-time liquid flow rate is equal to the desired flow rate is no, then execute at least one of the following alarm schemes:

[0087] Displaying an alarm message through the display unit of the man-machine interaction module;

[0088] The alarm unit of the man-machine interaction module gives a warning through voice or a warning light.

[0089] When selecting the autonomously desired cerebrospinal fluid flow rate mode, the method further includes:

[0090] Inputting the desired drainage volume, the flow rate difference threshold between different drainage bags, and the information fluctuation threshold of the patient's pulse and / or respiration through the man-machine interaction module;

[0091] The step of the flow regulator adjusting the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to or falls within the range of the desired flow rate is specifically as follows: the flow regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the range of the desired flow rate, and adjusts the flow rate in real time in combination with the patient's respiration and / or pulse information;

[0092] After the step of the flow regulator adjusting the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the range of the desired flow rate, and adjusting the flow rate in real time in combination with the patient's respiration and / or pulse information, the following steps are further included:

[0093] Judge whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold;

[0094] If not, judge whether the real-time liquid flow rate is equal to the desired flow rate.

[0095] If so, judge whether the real-time information fluctuation value of the patient's pulse and / or respiration is greater than the information fluctuation threshold. If not, control the end of the current cerebrospinal fluid drainage when the calculated current cerebrospinal fluid drainage volume is greater than the desired drainage volume.

[0096] If the result of judging whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of judging that the real-time information fluctuation value of the patient's pulse and / or respiration is greater than the information fluctuation threshold is yes, then pause the drainage.

[0097] If the result of judging whether the real-time liquid flow rate falls within the desired flow rate is no, then control the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the range of the desired flow rate, and adjust the flow rate in real time in combination with the patient's respiration and / or pulse information.

[0098] If the result of judging whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of judging whether the real-time liquid flow rate is equal to the desired flow rate is no, or the result of judging that the real-time information fluctuation value of the patient's pulse and / or respiration is greater than the information fluctuation threshold is yes, then execute at least one of the following alarm schemes:

[0099] Display an alarm message through the display unit of the human-computer interaction module;

[0100] The alarm unit of the human-computer interaction module gives a warning through voice or a warning light.

[0101] The cerebrospinal fluid drainage device provided by the present application can record the historical drainage information of the patient, which is convenient for doctors to operate on patients who need multiple drainages, improves the reliability and convenience of individual patient operation and treatment, and reduces the work burden of medical staff.

[0102] Compared with the prior art, the cerebrospinal fluid drainage device of the present application uses a flow rate sensor 2 to detect the liquid flow rate in the drainage tube 1 in real time, and feeds the data back to the drainage control module. The drainage control module controls the flow regulator 3 in combination with the real-time liquid flow rate collected by the flow rate sensor 2 and the expected cerebrospinal fluid flow rate range set by the human-computer interaction module, and then adjusts the liquid flow rate in the drainage tube 1 to make the real-time liquid flow rate fall within the expected cerebrospinal fluid flow rate range, forming a closed-loop control between the drainage control module, the flow regulator 3 and the drainage tube 1. The structure of the present application is simple, without the need to measure additional information of the patient. By directly modifying the traditional cerebrospinal fluid drainage device, automatic cerebrospinal fluid drainage, automatic pressure regulation and speed regulation can be realized, without contaminating the cerebrospinal fluid, with high pressure control and speed control accuracy, reliable products and convenient use.

[0103] The above are only embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A cerebrospinal fluid drainage device, characterized in that, the cerebrospinal fluid drainage device includes a drainage pipeline, a flow rate sensor, a flow regulator and a drainage control system. The drainage pipeline includes a drainage bag for temporarily storing cerebrospinal fluid. The flow rate sensor is used to collect the real-time liquid flow rate in the drainage bag. The drainage control system includes a human-computer interaction module and a drainage control module. The human-computer interaction module includes a display unit and a calculation unit. The display unit is used to input the desired flow rate / flow rate range and the desired drainage volume, record and display the patient's personal information, treatment information, historical cerebrospinal fluid flow rate, and current cerebrospinal fluid flow rate. The calculation unit is used to calculate the current cerebrospinal fluid drainage volume, compare the current cerebrospinal fluid drainage volume with the desired drainage volume, and compare the real-time liquid flow rate with the desired flow rate / flow rate range to judge the current drainage state; The drainage control module controls the flow regulator according to the current drainage state so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range, or controls the suspension / end of the current drainage; The number of the drainage bags is at least two, which are arranged at intervals on the drainage pipeline and connected by a drainage tube. The flow rate sensor corresponds to the drainage bag one by one. The display unit is further used to input the flow rate difference threshold between different drainage bags. The calculation unit is further used to calculate the real-time flow rate difference between different drainage bags, and compare the real-time flow rate difference with the flow rate difference threshold to judge the current drainage state. When the real-time flow rate difference is greater than the flow rate difference threshold, the drainage control module controls the suspension of the current drainage.

2. The cerebrospinal fluid drainage device according to claim 1, characterized in that, the human-computer interaction module further includes an alarm unit. When the real-time liquid flow rate is greater than the maximum value of the desired flow rate / flow rate range, the alarm unit displays an alarm message.

3. The cerebrospinal fluid drainage device according to claim 2, characterized in that, the alarm unit is further used to give a warning by voice or warning light when the real-time liquid flow rate is greater than the maximum value of the desired flow rate / flow rate range.

4. The cerebrospinal fluid drainage device according to claim 1, characterized in that, the flow regulator includes an adjusting member, a motor and a lead screw. The adjusting member is connected to the drainage tube of the drainage pipeline. The drainage control module is used to control the motor of the flow regulator, and then drive the lead screw connected to the adjusting member to adjust the speed.

5. The cerebrospinal fluid drainage device according to claim 1, characterized in that, the display unit is further used to collect the patient's real-time pulse and / or respiration information and input the information fluctuation threshold of the patient's pulse and / or respiration. The calculation unit is further used to calculate the real-time information fluctuation value of the patient's pulse and / or respiration, and compare the real-time information fluctuation value with the information fluctuation threshold to judge the current drainage state. When the real-time information fluctuation value is greater than the information fluctuation threshold, the drainage control module controls the suspension of the current drainage.

6. A cerebrospinal fluid drainage method, characterized in that, the cerebrospinal fluid drainage method is realized based on the cerebrospinal fluid drainage device according to claim 4; the cerebrospinal fluid drainage method includes: inputting the patient ID, and searching for the patient's historical drainage information through the human-computer interaction module, inputting the desired flow rate / flow rate range through the human-computer interaction module; Combined with the real-time liquid flow rate collected by the flow rate sensor and the desired flow rate / flow rate range set by the human-computer interaction module, control the flow rate regulator to achieve closed-loop control of the real-time liquid flow rate; The flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range; During the above process, the flow rate sensor synchronously feeds back the collected real-time liquid flow rate to the drainage control module, forming a closed-loop control among the drainage control module, the flow rate regulator, and the drainage tube.

7. The cerebrospinal fluid drainage method according to claim 6, characterized in that, before the step of inputting the desired flow rate / flow rate range through the human-computer interaction module, it further includes: selecting an artificial desired cerebrospinal fluid flow rate mode or an autonomous desired cerebrospinal fluid flow rate mode.

8. The cerebrospinal fluid drainage method according to claim 7, characterized in that, when the artificial desired cerebrospinal fluid flow rate mode is selected, the method further includes: inputting the desired drainage volume and the flow rate difference threshold between different drainage bags through the human-computer interaction module; The step that the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range is specifically: the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate; After the step that the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate, it further includes: judging whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold; if not, then judge whether the real-time liquid flow rate is equal to the desired flow rate, if so, then control the end of the current cerebrospinal fluid drainage when the calculated current cerebrospinal fluid drainage volume is greater than the desired drainage volume; if the result of judging whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, then suspend the drainage; if the result of judging whether the real-time liquid flow rate is equal to the desired flow rate is no, then control the real-time liquid flow rate to be equal to the desired flow rate; if the result of judging whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of judging whether the real-time liquid flow rate is equal to the desired flow rate is no, then execute at least one of the following alarm schemes: display an alarm message through the display unit of the human-computer interaction module; the alarm unit of the human-computer interaction module gives a warning through voice or warning lights.

9. The cerebrospinal fluid drainage method according to claim 7, characterized in that, when the autonomous desired cerebrospinal fluid flow rate mode is selected, the method further includes: inputting the desired drainage volume, the flow rate difference threshold between different drainage bags, and the information fluctuation threshold of the patient's pulse and / or respiration through the human-computer interaction module; The step that the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate is equal to the desired flow rate or falls within the desired flow rate range is specifically: the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the desired flow rate range, and adjusts the flow rate in real time in combination with the patient's respiration and / or pulse information; After the step that the flow rate regulator adjusts the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the desired flow rate range and adjusts the flow rate in real time in combination with the patient's respiration and / or pulse information, it further includes: Determine whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold; If not, determine whether the real-time liquid flow rate is equal to the expected flow rate; If so, determine whether the real-time information fluctuation value of the patient's pulse and / or respiration is greater than the information fluctuation threshold; If not, control the end of the current drainage when the calculated cerebrospinal fluid drainage volume of the current time is greater than the expected drainage volume; If the result of determining whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of determining that the real-time information fluctuation value of the patient's pulse and / or respiration is greater than the information fluctuation threshold is yes, pause the drainage; If the result of determining whether the real-time liquid flow rate falls within the expected flow rate is no, control the liquid flow rate of the drainage pipeline so that the real-time liquid flow rate falls within the expected flow rate range, and adjust the flow rate in real time in combination with the patient's respiration and / or pulse information; If the result of determining whether the real-time flow rate difference between different drainage bags is greater than the flow rate difference threshold is yes, or the result of determining whether the real-time liquid flow rate is equal to the expected flow rate is no, or the result of determining that the real-time information fluctuation value of the patient's pulse and / or respiration is greater than the information fluctuation threshold is yes, execute at least one of the following alarm schemes: Display an alarm message through the display unit of the human-machine interaction module; The alarm unit of the human-machine interaction module gives a warning through voice or a warning light.

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