A lumbar cistern drainage quantitative alarm device

Abstract

This invention discloses a quantitative alarm device for lumbar ventricle drainage, comprising a mounting frame, a weighing device, a color sensor, and a control circuit. The weighing device is mounted on the mounting frame and suspends a collection bag. The weighing device is equipped with a timing module to monitor and record the weight change of the collection bag per unit time. The color sensor is mounted on the side of the mounting frame and positioned opposite the collection bag. The control circuit includes an alarm module and is electrically connected to the timing module, the weighing device, and the color sensor. When the color sensor detects a color change in the collection bag, the alarm module triggers an alarm. The advantage of this invention is its ability to monitor the drainage rate, improving the safety of external lumbar ventricle drainage.

Description

Technical Field

[0001] This invention relates to the field of monitoring devices for lumbar sacs, and in particular to a quantitative alarm device for lumbar sac drainage. Background Technology

[0002] Lumbar cistern drainage is a common clinical procedure that continuously drains the patient's cerebrospinal fluid (CSF) to the outside of the body. Slow drainage of the CSF helps remove some bacteria, toxins, and necrotic tissue. Intracranial pressure monitoring is possible, effectively controlling intracranial pressure.

[0003] The method of external lumbar cistern drainage involves inserting an external lumbar cistern drainage tube into the L3-L4 or L4-L5 lumbar intervertebral space, ensuring the tip of the tube is positioned at least 10 cm inside the lumbar cistern. The tube is then connected to a drainage bag to facilitate external drainage of cerebrospinal fluid via the lumbar cistern. Current techniques for lumbar cistern drainage are limited in function and suffer from difficulties in adjusting the height and monitoring the drainage rate.

[0004] A Chinese patent document, patent number 2018205609378, disclosed on April 26, 2019, describes a lumbar sac drainage device. The device includes a main panel with side panels on both sides, integrally formed with the side panels in a U-shaped cross-section. Vertical grooves are formed on the surface of the side panels, within which a lifting adjustment rod slides. Fixing devices are located at both ends of the lifting adjustment rod, which is connected to a collection bag. The fixing devices include threads at both ends of the lifting adjustment rod and tightening nuts that engage with these threads. A horizontally rotatable laser pointer is mounted on the upper surface of the collection bag. The lifting adjustment rod includes a hollow outer sleeve and an inner sleeve. An opening is formed on the surface of the outer sleeve, and an alarm device is located between the outer and inner sleeves. The alarm device indicates excessive discharge, and the laser pointer, in conjunction with the lifting adjustment rod, determines the appropriate height.

[0005] The shortcomings of existing technologies are: the lack of monitoring of the state of the drained liquid and the inability to monitor the drainage rate, which affects the safety of external drainage in the lumbar sac. Summary of the Invention

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a quantitative alarm device for lumbar sac drainage, which can monitor the drainage rate and improve the safety of external drainage in the lumbar sac.

[0007] To achieve the above objectives, the present invention adopts the following technical solution.

[0008] A quantitative alarm device for lumbar sac drainage includes a mounting frame, a weighing device, a color sensor, and a control circuit. The weighing device is mounted on the mounting frame and a collection bag is suspended from it. The weighing device is equipped with a timing module to monitor and record the change in weight of the collection bag per unit time. The color sensor is mounted on the side of the mounting frame and is positioned opposite the collection bag. The control circuit includes an alarm module and is electrically connected to the timing module, the weighing device, and the color sensor. When the color sensor detects a color change in the collection bag, it triggers an alarm through the alarm module.

[0009] This application uses a weighing device in conjunction with a timing module to monitor the rate of weight change of the collection bag per unit time. Using weight as the indicator dimension, it achieves quantitative monitoring of the drainage rate during external drainage of the lumbar cistern. Furthermore, it can monitor the amount of fluid accumulated in the collection bag, allowing for timely replacement when the bag is nearly full to prevent overflow. A color sensor can monitor the color of the collection bag; for example, the bag turns red when blood is drained, while the bag itself is colorless and transparent, as is the normal drainage fluid. Monitoring the color of the collection bag facilitates control of the drainage process. The inclusion of a color sensor and the monitoring of the drainage rate significantly improves the safety of external drainage of the lumbar cistern.

[0010] Preferably, the mounting frame is equipped with a control box containing control circuitry. The control box surface features a display screen showing the weighing rate and the rate of weight change curve. The alarm module includes a warning light mounted on the control box surface. The control box integrates the circuit modules, enabling visual monitoring of the weight change rate of the collection bag. The warning light provides a visual alert when the drainage rate of the collection bag is abnormal, the collection bag is full, or the drainage medium is abnormal, thus improving the safety of external drainage in the lumbar sac.

[0011] Preferably, the mounting frame has a U-shaped cross-section, and the inner side of the mounting frame has a receiving groove to accommodate the collection bag. This allows the collection bag to be concealed within the mounting frame, preventing it from colliding with the collection bag during drainage and causing safety hazards.

[0012] Preferably, at least one side wall of the receiving slot is provided with a reflective layer for monitoring by the color sensor. This improves the reliability of color sensor monitoring.

[0013] Preferably, the weighing device includes an upper weighing module and a lower weighing module. The upper weighing module includes a suspension part and a first weighing part, while the lower weighing module includes a holder part and a second weighing part. The upper end of the collection bag is hung on the suspension part, and the lower end of the collection bag is placed on the holder part. The weighing value of the weighing device is the sum of the weighing value of the first weighing part and the weighing value of the second weighing part. The combination of the upper and lower weighing modules enables reliable measurement of the collection bag, while the lower weighing module supports the collection bag, preventing it from being damaged by the weight of the drainage liquid.

[0014] Preferably, the lower weighing module is slidably mounted longitudinally on the mounting frame. In use, the collection bag is first hung on the suspension part of the upper weighing module, and the lower weighing module moves upward from the lower end of the collection bag to support the lower end of the collection bag, thereby realizing the coordinated action of the upper and lower weighing modules.

[0015] Preferably, the lower weighing module also includes a connecting slider, and a connecting slide rail is provided on the mounting frame to cooperate with the connecting slider. An elastic element is provided on the mounting frame to push the connecting slider upwards. When the lower weighing module and the collection bag are engaged via the retainer, the lower weighing module is located at the lower part of the connecting slide rail, allowing the elastic element to push the lower weighing module upwards and lift the collection bag. The connecting slider and the connecting slide rail cooperate to achieve the lifting and lowering of the lower weighing module relative to the mounting frame. Under the elastic force of the elastic element, the lower weighing module moves upwards, supporting the lower end of the collection bag. The reliable cooperation between the upper and lower weighing modules achieves the overall weighing of the collection bag.

[0016] Preferably, the tray includes a retaining ring with a "C"-shaped cross-section and a flat support plate disposed on the outer side of the upper end of the retaining ring. The lower end pipe of the collection bag can pass through the center of the retaining ring, and the retaining ring and the flat support plate cooperate to reliably support the lower end of the collection bag.

[0017] Preferably, the alarm module includes a first whistle signal when the rate of change of the collection bag weight is abnormal and a second whistle signal when the collection bag changes color. The first and second whistle signals are distinguishable and provide a reliable warning when the lumbar cistern is drained.

[0018] Preferably, the mounting frame is equipped with a fixed pulley and a rope winder. A connecting belt extends from the rope winder, passes through the fixed pulley, and connects to the suspension unit. The rope winder includes a housing and a rope wheel that fixes one end of the connecting belt. The rope wheel rotates within the housing, and a rotating handle that rotates synchronously with the rope wheel is located outside the housing. The housing has a locking clip that can slide and tighten against the connecting belt, and the connecting belt has graduations. This allows for adjustment of the collection bag height to better accommodate external drainage from the lumbar sac. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a quantitative alarm device for lumbar sac drainage disclosed in one embodiment of the present invention.

[0020] Figure 2 This is a partial cross-sectional view of the internal structure of a lumbar sac drainage quantitative alarm device disclosed in one embodiment of the present invention.

[0021] Figure 3 yes Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Mounting frame; 2. Base; 3. End cap; 4. Receiving groove; 5. Hollow area; 6. Color sensor; 7. Liquid collection bag; 8. Control box; 9. Display screen; 10. Warning light; 11. Operation button; 13. Suspension part; 14. First weighing part; 15. Card holder; 16. Snap ring; 17. Flat support plate; 18. Second weighing part; 19. Fixed pulley; 20. Rope winder; 21. Housing; 22. Rope winder; 23. Rotating handle; 24. Locking clip; 25. Connecting belt; 26. Connecting slider; 27. Connecting slide rail; 28. Cover plate; 29. ​​Connecting block; 30. Elastic element; 31. Groove; 32. Bracket. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] The terms “comprising” and “having”, and any variations thereof, used in the specification and claims of this invention are intended to cover a non-exclusive inclusion, such as a method or product that includes a series of technical features, not necessarily limited to those technical features explicitly listed, but may also include other technical features that may be included in the method or product but not explicitly listed.

[0025] In the description of this invention, it should be understood that the technical features defined by terms such as "first" and "second" which have a sequential concept are only used to clearly describe the defined technical features and to clearly distinguish the defined technical features from other technical features, and do not represent that they are named in this way in actual implementation. Therefore, they should not be construed as limitations on this invention.

[0026] Example 1,

[0027] A lumbar sac drainage quantitative alarm device, such as Figures 1 to 3 As shown, the device includes a mounting frame 1, a weighing device, a color sensor 6, and a control circuit. The weighing device is mounted on the mounting frame 1 and a collection bag 7 is suspended from it. The weighing device is equipped with a timing module to monitor and record the change in weight of the collection bag 7 per unit time. The color sensor 6 is mounted on the side of the mounting frame 1 and is positioned opposite to the collection bag 7. The control circuit includes an alarm module and is electrically connected to the timing module, the weighing device, and the color sensor 6. When the color sensor 6 detects a color change in the collection bag 7, it triggers an alarm through the alarm module.

[0028] This application uses a weighing device in conjunction with a timing module to monitor the rate of weight change of the collection bag 7 per unit time. Using weight as the indicator dimension, it achieves quantitative monitoring of the drainage rate during external drainage of the lumbar cistern. Furthermore, it can monitor the amount of fluid accumulated in the collection bag 7, allowing for timely replacement when the bag is nearly full to prevent overflow. A color sensor 6 can monitor the color of the collection bag 7; for example, the bag turns red when blood is drained. The collection bag 7 itself is colorless and transparent, as is the normal drainage fluid. Monitoring the color of the collection bag 7 facilitates control of the drainage process. The inclusion of the color sensor 6 and the monitoring of the drainage rate of the collection bag 7 significantly improves the safety of external drainage of the lumbar cistern.

[0029] The weighing device, color sensor 6, and control circuit can transmit data and signals via signal lines, or remotely via wireless transceivers such as Bluetooth modules. The signals collected by the control circuit can be processed directly or transmitted to a remote terminal for processing.

[0030] Example 2,

[0031] A lumbar sac drainage quantitative alarm device, such as Figures 1 to 3 As shown, the device includes a mounting frame 1, a weighing device, a color sensor 6, and a control circuit. The weighing device is mounted on the mounting frame 1 and a collection bag 7 is suspended from it. The weighing device is equipped with a timing module to monitor and record the change in weight of the collection bag 7 per unit time. The color sensor 6 is mounted on the side of the mounting frame 1 and is positioned opposite to the collection bag 7. The control circuit includes an alarm module and is electrically connected to the timing module, the weighing device, and the color sensor 6. When the color sensor 6 detects a color change in the collection bag 7, it triggers an alarm through the alarm module.

[0032] The mounting frame 1 is equipped with a control box 8, which contains a control circuit. The control box 8 has operation buttons 11 and a display screen 9 showing the weighing rate and weight change rate curve. The alarm module includes a warning light 10 on the surface of the control box 8. The control box 8 integrates the circuit modules, enabling visual monitoring of the weight change rate of the collection bag 7. The warning light 10 provides a visual warning signal when the drainage rate of the collection bag 7 is abnormal, the collection bag 7 is full, or the drainage medium is abnormal, improving the safety of external drainage in the lumbar cistern. Furthermore, the alarm module includes a first whistle signal when the weight change rate curve of the collection bag 7 is abnormal and a second whistle signal when the collection bag 7 changes color. The first and second whistle signals are clearly distinguishable, providing a reliable warning during external drainage in the lumbar cistern.

[0033] The mounting frame 1 has a U-shaped cross-section. A base 2 is located at the bottom of the mounting frame 1, and an end cap 3 is located at the top. The control box 8 is positioned above the end cap 3. An inner accommodating groove 4 is provided to hold the collection bag 7. A color sensor 6 is located on one side of the accommodating groove 4. Reflective layers are provided on three sides of the accommodating groove 4 to improve the monitoring effect of the color sensor 6. The accommodating groove 4 conceals the collection bag 7 within the mounting frame 1, preventing it from colliding with the collection bag 7 during drainage and causing safety hazards.

[0034] In this embodiment, to achieve reliable measurement of the collection bag 7 and reduce the impact of resistance caused by pressure on the drainage tube on the weighing results, the weighing device includes an upper weighing module and a lower weighing module. The upper weighing module includes a suspension part 13 and a first weighing part 14, and the lower weighing module includes a support part 15 and a second weighing part 18. The first weighing part 14 uses a tension-compression type load cell, and the second weighing part 18 uses a cantilever beam load cell. The suspension part 13 is located at the lower end of the first weighing part 14, and the support part 15 is located at the outer end of the second weighing part 18. The upper end of the collection bag 7 is hung on the suspension part 13, and the lower end of the collection bag 7 is placed on the support part 15. The weighing value of the weighing device is the sum of the weighing value of the first weighing part 14 and the weighing value of the second weighing part 18. The upper and lower weighing modules work together to achieve reliable measurement of the collection bag 7, while the lower weighing module supports the collection bag 7 to prevent it from being damaged by the weight of the drainage fluid.

[0035] To ensure reliable support of the collection bag 7 by the lower weighing module, the lower weighing module is longitudinally slidable on the mounting frame 1. In use, the collection bag 7 is first hung on the suspension part 13 of the upper weighing module. Then, the lower weighing module is pressed down to separate the lower end of the collection bag 7 from the lower weighing module. Afterward, the lower weighing module moves upward from the outside of the lower end of the collection bag 7 to support the lower end of the collection bag 7, thus achieving the coordinated action of the upper and lower weighing modules.

[0036] To adjust the height of the collection bag 7 for better coordination with external drainage from the lumbar sac, the mounting frame 1 is equipped with a fixed pulley 19 and a rope winder 20. A connecting belt 25 extends from the rope winder 20, passing through the fixed pulley 19 and connecting to the upper end of the fixed suspension part 13. The rope winder 20 includes a housing 21 and a rope-winding wheel 22 that fixes one end of the connecting belt 25. The housing 21 is fixed to the back side of the mounting frame 1 by a bracket 32. The mounting frame 1 has a hollow area 5 for the connecting belt 25 to pass through. The rope-winding wheel 22 rotates inside the housing 21. A rotating handle 23 that rotates synchronously with the rope-winding wheel 22 is provided outside the housing 21. The housing 21 has a locking clip 24 that can slide against the connecting belt 25. The locking clip 24 and the housing 21 are in a damped sliding connection. When the locking clip 24 is pushed to the outlet of the housing 21, it locks the connecting belt 25, thus locking the position of the connecting belt 25. The connecting belt 25 has a scale.

[0037] As one implementation scheme for the sliding of the lower weighing module, the lower weighing module also includes a connecting slider 26. The mounting frame 1 has a groove 31 and a connecting slide rail 27 that matches the connecting slider 26 is provided in the groove 31. The connecting slide rail 27 is symmetrically arranged on both sides of the connecting slider 26 to prevent the connecting slider 26 from sliding out of the connecting slide rail 27. The mounting frame 1 has a cover plate 28 on the back side of the groove 31. The cover plate 28 is put on after the connecting slider 26 and the connecting slide rail 27 are connected. A connecting block 29 is fixed on the second weighing part 18, and the connecting block 29 and the connecting slider 26 are bolted together. The mounting frame 1 has an elastic element 30 that pushes the connecting slider 26 upward. The elastic element 30 is a spring. When the lower weighing module and the liquid collection bag 7 are engaged through the clip part 15, the lower weighing module is located at the lower position of the connecting slide rail 27 so that the elastic element 30 pushes the lower weighing module upward and lifts the liquid collection bag 7. The clip part 15 includes a retaining ring 16 with a "C" shaped cross section and a flat support plate 17 provided on the outer side of the upper end of the retaining ring 16. The lower end pipe of the collection bag 7 can pass through the center of the retaining ring 16. The retaining ring 16 and the flat support plate 17 cooperate to reliably support the lower end of the collection bag 7. The connecting slider 26 and the connecting slide rail 27 cooperate to realize the lifting and lowering of the lower weighing module relative to the mounting frame 1. The lower weighing module moves upward under the elastic force of the elastic element 30 to support the lower end of the collection bag 7. The upper and lower weighing modules cooperate reliably to realize the overall weighing of the collection bag 7.

[0038] As will be understood by those skilled in the art, as a simple alternative to the above solution, the longitudinal sliding of the lower weighing module can also be achieved by active operation using linear drive components such as cylinders or electric cylinders.

Claims

1. A quantitative alarm device for lumbar sac drainage, characterized in that, The system includes a mounting frame, a weighing device, a color sensor, and a control circuit. The weighing device is mounted on the mounting frame and suspends a collection bag. The weighing device is equipped with a timing module to monitor and record the weight change of the collection bag per unit time. The color sensor is located on the side of the mounting frame and opposite to the collection bag. The control circuit includes an alarm module and is electrically connected to the timing module, the weighing device, and the color sensor. When the color sensor detects a color change in the collection bag, it triggers an alarm through the alarm module. The weighing device includes an upper weighing module and a lower weighing module. The upper weighing module includes a suspension part and a first weighing part, and the lower weighing module includes a tray part and a second weighing part. The upper end of the liquid bag is hung on the suspension part, and the lower end of the liquid collection bag is set on the card holder part. The weighing value of the weighing device is the weighing value of the first weighing part plus the weighing value of the second weighing part. The lower weighing module is longitudinally slidable on the setting frame. The lower weighing module also includes a connecting slider. The setting frame is provided with a connecting slide rail that cooperates with the connecting slider. The setting frame is provided with an elastic element that pushes the connecting slider upward. When the lower weighing module and the liquid collection bag are engaged through the card holder part, the lower weighing module is located at the lower part of the connecting slide rail so that the elastic element pushes the lower weighing module upward and lifts the liquid collection bag. The card holder part includes a retaining ring with a "C" shaped cross section and a flat support plate set on the outer side of the upper end of the retaining ring.

2. The lumbar sac drainage quantitative alarm device according to claim 1, characterized in that, The mounting frame is equipped with a control box, which contains a control circuit. The surface of the control box is equipped with a display screen that displays the weighing weight and the weight change rate curve. The alarm module includes a warning light installed on the surface of the control box.

3. The lumbar sac drainage quantitative alarm device according to claim 1, characterized in that, The cross-sectional shape of the mounting frame is "U" shaped, and the inner side of the mounting frame is provided with a receiving groove for accommodating the liquid collection bag.

4. The lumbar sac drainage quantitative alarm device according to claim 3, characterized in that, The receiving slot has a reflective layer on at least one side wall for imaging by the color sensor.

5. A quantitative alarm device for lumbar sac drainage according to claim 1 or 2, characterized in that, The alarm module includes a first whistle signal when the weight change rate curve of the collection bag is abnormal and a second whistle signal when the collection bag changes color.

6. A quantitative alarm device for lumbar sac drainage according to any one of claims 1 to 4, characterized in that, The mounting frame is equipped with a fixed pulley and a rope winder. A connecting belt extends from the rope winder and passes through the fixed pulley to connect to the suspension part. The rope winder includes a housing and a rope winder that fixes one end of the connecting belt. The rope winder is rotatably mounted inside the housing. A rotating handle that rotates synchronously with the rope winder is located outside the housing. A locking clip that can slide against the connecting belt is provided on the housing. The connecting belt is marked with graduations.

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