A drainage tube system and monitoring method for monitoring the state of cerebrospinal fluid drainage

Abstract

The application provides a drainage tube system and a monitoring method for monitoring the drainage state of cerebrospinal fluid, which comprises a front catheter, a dropper, a rear catheter and a drainage bag, an integrated detection module is arranged on the front catheter, the integrated detection module comprises an ultrasonic flow module and a spectrum detection module; a drop flow detection module is arranged on the dropper, the system further comprises a central processing module, the drop flow detection module and the integrated detection module are connected with the central processing module, and the system further comprises a data transmission module connected with the central processing module. The drainage state monitoring method mainly comprises the following steps: in the first step, the drainage state information of the front catheter is collected; in the second step, the collected information is processed; and in the third step, the collected information is processed and sent to a user terminal. The ultrasonic flow module, the spectrum detection module and the drop flow detection module are combined to detect the drainage state, the information is transmitted to the central processing module, and the drainage state is obtained. Medical staff can know the drainage state in real time, and the risk caused by the untimely adjustment due to poor drainage is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically a drainage tube system and monitoring method for monitoring the cerebrospinal fluid drainage status. Background Technology

[0002] External ventricular drainage (EVD) is a common neurosurgical procedure that involves inserting a drainage tube into the ventricle after ventricular puncture through a burr hole or during craniotomy to drain intracranial fluid. It is primarily used to treat intraventricular hemorrhage, hydrocephalus, and other intracranial diseases, especially acute obstructive hydrocephalus, intracerebral hemorrhage rupture into the ventricle, intraventricular hemorrhage, and brain herniation. It can temporarily relieve increased intracranial pressure and allows for monitoring of intracranial pressure changes, collection of cerebrospinal fluid samples for testing, and, when necessary, intraventricular drug administration. EVD plays a crucial role in relieving brain herniation, draining bloody cerebrospinal fluid, and reducing intracranial pressure.

[0003] During the use of external ventricular drainage, medical staff need to do the following: (1) Fix the drainage tube and drainage bottle at the head of the bed so that the highest point of the drainage tube is 15 cm higher than the lateral ventricle plane to maintain normal intracranial pressure; (2) Control the drainage speed and volume: the drainage volume should not exceed 500 ml per day, but medical staff need to check the drainage tube for patency every hour. The drainage speed cannot be monitored in real time. When the drainage fluid pressure is insufficient, the drainage fluid status can only be checked by marking the fluid level on the drainage tube and observing the fluid level regularly. (3) The color of the drainage fluid. For example, if a large amount of bloody cerebrospinal fluid is drained, it indicates intraventricular hemorrhage. Turbid cerebrospinal fluid indicates infection, but there is no relevant indication or warning function for abnormal drainage fluid color in clinical practice. Medical staff need to check frequently. In view of this, a cerebrospinal fluid drainage tube system and monitoring method with monitoring drainage status are proposed. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides the following technical solution:

[0005] A cerebrospinal fluid drainage tube system for monitoring drainage status is provided, including a front catheter, a dropper, a rear catheter, and a drainage bag. The rear end of the front catheter is connected to an outflow tube in the dropper, wherein the outflow tube extends toward the top of the dropper and bends downward so that the outlet of the outflow tube faces the bottom of the dropper. The rear catheter is connected to the bottom of the dropper, and the rear end of the rear catheter is connected to the drainage bag.

[0006] An integrated detection module is provided on the pre-conduit tube, which includes an ultrasonic flow module and a spectral detection module; a drip detection module is provided on the drip tube, which includes a first guide post, a flow guide ring and a second guide post. The flow guide ring is installed at the outlet of the outflow tube for flow guidance. One end of the first guide post is electrically connected to the flow guide ring, and the other end extends to the outside of the drip tube. One end of the second guide post is bent upward and installed below the flow guide ring, and the other end of the second guide post extends to the outside of the drip tube. A gap of 2-4 mm is provided between the second guide post and the flow guide ring, and the end of the second guide post facing the flow guide ring is tapered.

[0007] It also includes a central processing module, a drip detection module and an integrated detection module connected to the central processing module, and a data transmission module connected to the central processing module.

[0008] Preferably, the integrated detection module is clamped and installed on the outside of the anterior duct.

[0009] Preferably, a second spectral detection module connected to the central processing unit module is also included, and the second spectral detection module is installed on the outside of the drainage bag.

[0010] Preferably, the system also includes a collection tube and a transition tube, with the drainage end of the drainage bag connected to the collection tube via the transition tube, which is equipped with graduations.

[0011] Preferably, an ultrasonic flow module II, which is connected to the central processing module, is clamped and installed on the transition pipe.

[0012] Preferably, the inside of the liquid collecting tube is under negative pressure before it is filled with liquid.

[0013] In addition, a method for monitoring cerebrospinal fluid drainage status is also provided.

[0014] The first step is to collect information on the drainage status of the anterior catheter. The ultrasonic flow module 1 in the integrated detection module collects the flow rate and flow status of the drainage fluid in the anterior catheter; the spectral detection module 1 is used to collect the spectrum of the anterior catheter and transmit the detection information to the central processing module; the drip detection module detects the outflow status of the outflow tube outlet and transmits the detection information to the central processing module.

[0015] The second step involves processing the information collected in the first step. If the ultrasonic flow module detects the flow status of the drainage fluid, it can be determined that the drainage fluid is in a flowing state within the pre-conduit tube. If the spectral detection module detects a change in the spectrum of the pre-conduit tube, it can be determined that the drainage fluid shows signs of flow, and the color change of the drainage fluid can also be obtained. If the drip detection module detects drainage fluid flowing out of the outlet of the drain tube, it can be determined that the drainage fluid in the pre-conduit tube has entered the drip tube, and the frequency of dripping from the outlet of the drain tube can be obtained, thus determining the flow status of the drainage fluid and the flow rate within a specified time.

[0016] The third step is to send the processing results of the information collected in the second step to the user terminal through the data transmission module.

[0017] Preferably, the spectral detection module 1 performs intermittent detection, with the interval time set between 1 and 10 minutes.

[0018] The beneficial effects of this invention are that it uses a combination of an ultrasonic flow module, a spectral detection module, and a drip detection module to detect the flow state and color of the drainage fluid within the drainage tube. The information collected by each module is transmitted to a central processing module, where a specified algorithm determines the drainage status. The superimposed detection method enhances reliability, and the monitoring information is transmitted to the medical staff's user terminal in real-time or intermittently via a data transmission module. Therefore, medical staff can monitor the drainage status in real time and adjust the drainage plan accordingly, reducing the risk of delayed adjustments due to poor drainage. Furthermore, the automatic detection and storage of detection information by the modules reduces the workload of medical staff. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the first state of the drainage tube system provided in the embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the second state of the drainage tube system provided in the embodiment of the present invention;

[0022] Figure 3 yes Figure 2 A magnified structural diagram at point A;

[0023] Figure 4 yes Figure 2 A magnified structural diagram at point B;

[0024] Figure 5 This is a schematic diagram of the control system provided in an embodiment of the present invention;

[0025] In the diagram: 1-front conduit, 2-integrated detection module, 3-throttle switch, 4-drip tube, 4.1-outflow tube, 5-rear conduit, 6-drainage bag, 7-spectral detection module two, 8-ultrasonic flow module two, 9-drip detection module, 9.1-first guide post, 9.2-guide ring, 9.3-second guide post, 10-collecting tube, 11-transition tube. Detailed Implementation

[0026] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and not for limiting the scope of the invention. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0027] In one specific embodiment, a drainage tube system and monitoring method for monitoring cerebrospinal fluid drainage status are provided. The drainage tube portion has the same structure as existing drainage tubes, including a front catheter 1, a dropper 4, a rear catheter 5, and a drainage bag 6. The rear end of the front catheter 1 is connected to an outflow tube 4.1 within the dropper 4. To achieve downward dripping within the dropper 4, the outflow tube 4.1 extends towards the top of the dropper 4 and bends downwards so that the outlet of the outflow tube 4.1 faces the bottom of the dropper 4, allowing the drainage fluid to drip downwards from the outlet of the outflow tube 4.1. Similarly, to collect the drainage fluid, the bottom of the dropper 4 is connected to the rear catheter 5, and the rear end of the rear catheter 5 is connected to the drainage bag 6. The drainage fluid is collected through the drainage bag 6. A flow throttling switch is installed on both the front catheter 1 and the rear catheter 5 to control the flow of the drainage tube.

[0028] Based on this, to monitor the flow state of the drainage fluid within the drainage tube, this application includes an integrated detection module 2 on the pre-conduit 1. This module includes an ultrasonic flow module, which detects the flow state (flowing or stationary) and velocity of the drainage fluid within the drainage tube. The ultrasonic flow module can be a clamp-on flow meter from Keyence to measure minute flow rates.

[0029] It is known that cerebrospinal fluid drainage is usually discontinuous and the flow rate is very small. Ultrasonic flow modules may have detection distortion. Relying solely on flow rate detection cannot accurately reflect the drainage status. Therefore, this application also combines spectral detection and drip detection modules 9 for comprehensive detection.

[0030] Specifically, the integrated detection module 2 set on the front catheter 1 also includes a spectral detection module 1, which mainly detects the changes in the color of the liquid in the front catheter 1, such as the change in the color of the drainage tube from no drainage fluid to drainage fluid, from air bubbles in the drainage tube to drainage fluid, and the initial color change of the drainage fluid. Therefore, the flow state of the drainage fluid can also be known through spectral detection.

[0031] Based on this, a drip detection module 9 is also provided on the dropper 4, which includes a first guide post 9.1, a guide ring 9.2, and a second guide post 9.3. The guide ring 9.2 is installed at the outlet of the outlet pipe 4.1 for guiding the flow, that is, the drainage fluid enters the guide ring 9.2 from the outlet pipe 4.1. One end of the first guide post 9.1 is electrically connected to the guide ring 9.2, and the other end extends to the outside of the dropper 4. One end of the second guide post 9.3 is bent upward and installed directly below the guide ring 9.2, and the other end of the second guide post 9.3 extends to the outside of the dropper 4. A gap of 2-4 mm is provided between the second guide post 9.3 and the guide ring 9.2, and the end of the second guide post 9.3 facing the guide ring 9.2 is tapered. When the drainage fluid enters the guide ring 9.2 from the outlet pipe 4.1... The fluid will then drip onto the second guide post 9.3, and a 2-4mm drip gap is provided between the second guide post 9.3 and the guide ring 9.2. During the dripping process, the drainage fluid will pass through this gap. At this time, the drainage fluid will make the connection between the second guide post 9.3 and the guide ring 9.2 conductive, so that the second guide post 9.3 and the guide ring 9.2 form a current loop. However, in order to prevent the drainage fluid from staying in the gap, the second guide post 9.3 has a conical structure with the small end facing the guide ring 9.2. The drip cannot stay on the second guide post 9.3 and flows to the bottom of the drip tube 4. The connection and disconnection form a pulse conductive signal. Therefore, the drip detection module 9 can obtain the drip signal through the drip conduction loop, and thus obtain the drip frequency, thereby detecting the drainage status of the drainage tube.

[0032] This application also includes a central processing module for collecting and processing the detection signals of the above modules. The drip detection module 9 and the integrated detection module 2 are respectively connected to the central processing module.

[0033] To enable the transmission of monitoring information to medical staff user terminals, this application also includes a data transmission module connected to the central processing module. This application preferably adopts a wireless communication method, which can transmit information to the nurse station or mobile phone.

[0034] In summary, the flow sensor and drip detection module can be used to obtain the flow, velocity, and flow rate of the fluid in the tube. In addition, the flow status of the fluid in the tube can also be obtained by combining spectral detection (such as by changes in the color of cerebrospinal fluid or changes in the fluid from nothing to something). Therefore, the drainage status can be obtained in a timely manner when the flow rate is low or the flow is intermittent, which solves the drawback of simply marking the liquid level on the drainage tube and checking the drainage status periodically.

[0035] In addition, by detecting the liquid color in the tube through spectral analysis, medical staff can promptly know whether there is bloody or turbid cerebrospinal fluid in the tube, which can serve as a timely reminder or warning.

[0036] In clinical practice, first, adjust the position of the drainage tube to ensure unobstructed flow. Then, install the integrated detection module 2 on the pre-catheter. Next, connect the integrated detection module 2 and the drip detection module 9 to the central processing unit module. Finally, connect the medical staff's client to the data transmission module to ensure timely transmission of monitoring information to the medical staff's client.

[0037] Since the cerebrospinal fluid drainage tube is a disposable tube, in order to enable testing on different tubes and facilitate the installation and removal of the integrated testing module 2, the integrated testing module 2 is clamped and installed on the outside of the front catheter 1. That is, the integrated testing module 2 includes two clamping blocks and the two are connected by snap-fit ​​or screws.

[0038] This application also includes a second spectral detection module 7 connected to the central processing unit module. The second spectral detection module 7 is installed on the outside of the drainage bag 6. The second spectral detection module 7 is mainly used to detect the color of the drainage fluid in the drainage bag, and transmit the detection information to the central processing unit module, and store the processed data in the storage module. It is mainly used for recording the color of the drainage fluid for convenient clinical review and comparison.

[0039] In addition, cerebrospinal fluid needs to be collected and measured during clinical nursing. The usual procedure is to drain the liquid in the drainage bag 6 into a measuring cup. This is cumbersome and the liquid is prone to spillage, causing environmental pollution. Therefore, this application sets a collection tube 10 and a transition tube 11 at the bottom of the drainage bag 6. The drain end of the drainage bag 6 is connected to the collection tube 10 through the transition tube 11, and the transition tube 11 is marked with graduations. When in use, the drainage fluid can be allowed to enter the collection tube 10 through the transition tube 11 by opening the drain valve at the bottom of the drainage bag 6, thereby achieving closed measurement. The collection tube 10 can be removed directly. In addition, in order to allow the liquid in the drainage bag 6 to enter the collection tube 10 quickly, the inside of the collection tube 10 is in a negative pressure state before filling. Usually, the negative pressure can be drawn out of the collection tube 10 before use.

[0040] Similarly, to achieve the measurement and recording of drainage fluid, an ultrasonic flow module two connected to the central processing module is clamped and installed on the transition tube 11. The drainage volume is detected by the ultrasonic flow module two in the same way as the ultrasonic flow module one, which will not be described in detail here. The detection information is then transmitted to the central processing module for processing and storage, which is convenient for clinical review and comparison.

[0041] In conjunction with the above, this application also provides a method for monitoring cerebrospinal fluid drainage status:

[0042] The first step primarily involves collecting drainage status information from the pre-drainage catheter 1. This is achieved through the ultrasonic flow module 1 within the integrated detection module 2, which collects the flow rate and flow state of the drainage fluid within the pre-drainage catheter 1. Specifically, the ultrasonic probe within the ultrasonic flow module detects the fluid velocity and flow state within the drainage tube. The spectral detection module 1 collects the spectrum of the pre-drainage catheter 1 and transmits the detection information to the central processing module. The drip detection module 9 detects the outflow status at the outlet of the outflow tube 4.1 and transmits the detection information to the central processing module.

[0043] The second step involves processing the collected information. If the ultrasonic flow module detects the flow status of the drainage fluid, it indicates that the drainage fluid is flowing within the pre-conduit 1. If the flow is continuous, it confirms that the drainage tube installation position meets the drainage requirements and that the tube has not fallen off or bent. If the spectral detection module detects a change in the spectrum of the pre-conduit 1, it also indicates that the drainage fluid is flowing and can provide information on color changes. The spectral detection module performs intermittent detection, with the interval set between 1 and 10 minutes. This allows for adjustment of the detection time during the drainage phase, reducing data transmission. For example, the detection time can be set short at the beginning of drainage and longer thereafter.

[0044] If the drip detection module 9 detects that there is drainage fluid flowing out of the outlet of the outflow tube 4.1, it can be determined that the drainage fluid in the front guide tube 1 has entered the drip tube 4, and the frequency of dripping from the outlet of the outflow tube 4.1 can be obtained, and the flow status of the drainage fluid and the flow rate within a specified time can be determined.

[0045] Therefore, the central processing module converts flow rate, flow, and spectral color information into visual information and comprehensively judges the drainage status based on the data. Specifically, the central processing module processes the detection signals from the ultrasonic flow module 1 and the drip detection module 9 and converts them into flow rate and flow information to monitor the flow status of the drainage fluid in the pre-conduit tube 1 and the drip tube 4. At the same time, the central processing module processes the detection signal from the spectral detection module 1 to monitor the color of the drainage fluid in the pre-conduit tube 1. The central processing module sets flow rate thresholds and spectral color thresholds to serve as detection and alarm functions.

[0046] The third step involves sending the processed information from the second step to the user terminal via a data transmission module, allowing medical staff to view the examination information and determine the drainage status. Therefore, medical staff can monitor the drainage status in real time, adjust the drainage plan promptly, reduce the risk of adverse drainage outcomes, and decrease their workload.

[0047] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cerebrospinal fluid drainage tube system for monitoring drainage status, comprising a front catheter (1), a dropper (4), a rear catheter (5), and a drainage bag (6), wherein the rear end of the front catheter (1) is connected to an outflow tube (4.1) in the dropper (4), wherein the outflow tube (4.1) extends toward the top of the dropper (4) and bends downward so that the outlet of the outflow tube (4.1) faces the bottom of the dropper (4); the rear catheter (5) is connected to the bottom of the dropper (4), and the rear end of the rear catheter (5) is connected to the drainage bag (6); Its features are, An integrated detection module (2) is provided on the pre-conduit (1), which includes an ultrasonic flow module and a spectral detection module; a drip detection module (9) is provided on the dropper (4), which includes a first guide post (9.1), a flow guide ring (9.2) and a second guide post (9.3). The flow guide ring (9.2) is installed at the outlet of the outlet pipe (4.1) for flow guidance. One end of the first guide post (9.1) is electrically connected to the flow guide ring (9.2), and the other end extends to the outside of the dropper (4). One end of the second guide post (9.3) is bent upward and installed below the flow guide ring (9.2). The other end of the second guide post (9.3) extends to the outside of the dropper (4). A gap of 2-4 mm is provided between the second guide post (9.3) and the flow guide ring (9.2), and the end of the second guide post (9.3) facing the flow guide ring (9.2) is tapered. It also includes a central processing module, the drip detection module (9) and the integrated detection module (2) are respectively connected to the central processing module, and a data transmission module connected to the central processing module.

2. The cerebrospinal fluid drainage tube system for monitoring drainage status as described in claim 1, characterized in that, The integrated detection module (2) is clamped and installed on the outside of the anterior duct (1).

3. A cerebrospinal fluid drainage tube system for monitoring drainage status as described in claim 1, characterized in that, It also includes a second spectral detection module (7) connected to the central processing unit module, the second spectral detection module (7) being installed on the outside of the drainage bag (6).

4. A cerebrospinal fluid drainage tube system for monitoring drainage status as described in claim 1, characterized in that, It also includes a collection tube (10) and a transition tube (11), wherein the drainage end of the drainage bag (6) is connected to the collection tube (10) through the transition tube (11), and the transition tube (11) is provided with a scale.

5. A cerebrospinal fluid drainage tube system for monitoring drainage status as described in claim 4, characterized in that, An ultrasonic flow module connected to the central processing module is clamped and installed on the transition tube (11).

6. A cerebrospinal fluid drainage tube system for monitoring drainage status as described in claim 4, characterized in that, The liquid collection tube (10) is under negative pressure before being filled with liquid.

7. A method for monitoring the cerebrospinal fluid drainage status using the cerebrospinal fluid drainage tube system of claims 1-6, characterized in that: The first step is to collect the drainage status information of the pre-catheter (1). The flow rate and flow status of the drainage fluid in the pre-catheter (1) are collected by the ultrasonic flow module in the integrated detection module (2). The spectral detection module is used to collect the spectrum of the pre-catheter (1) and transmit the detection information to the central processing module. The drip detection module (9) detects the liquid discharge status of the outlet of the outflow pipe (4.1) and transmits the detection information to the central processing module. The second step is to process the information collected in the first step. If the ultrasonic flow module detects the flow status information of the drainage fluid, it can be determined that the drainage fluid is in a flowing state in the front catheter (1). If the spectral detection module detects a change in the spectrum of the front catheter (1), it can be determined that the drainage fluid has signs of flow and the color change of the drainage fluid can be obtained. If the drip detection module (9) detects that there is drainage fluid flowing out of the outlet of the outlet tube (4.1), it can be determined that the drainage fluid in the front guide tube (1) has entered the drip tube (4), and the frequency of dripping from the outlet of the outlet tube (4.1) can be obtained, and the flow state of the drainage fluid and the flow rate within a specified time can be determined. The third step is to send the processing results of the information collected in the second step to the user terminal through the data transmission module.

8. The method for monitoring cerebrospinal fluid drainage status as described in claim 6, characterized in that: The spectral detection module is an intermittent detection module, and the interval time can be set to 1-10 minutes.

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