An automatic detection of lumbar cistern drainage device

Abstract

This utility model provides an automatic detection device for lumbar cistern drainage, relating to the field of medical device technology. It includes a support, L-shaped scale plates, limiting baffles, and a lifting drive component. Two L-shaped scale plates are symmetrically arranged on one side of the support, with scale lines on their surfaces. Limiting baffles are respectively provided between the two end faces of the two L-shaped scale plates. The key feature is the addition of a lifting drive component that moves up and down along the length of the support. Through the coordination of the above structures, and compared with existing technologies, it has the following advantages: First, through non-contact collaborative monitoring using a fiber optic pressure sensor and a medical photoelectric sensor, high-precision real-time detection of intracranial pressure and dynamic calculation of drainage volume are achieved; second, based on closed-loop control of the servo motor for lifting, fully automatic adjustment of the drainage height and rapid device compatibility are achieved, while a graded alarm mechanism provides multi-dimensional early warning through a three-color LED light and a buzzer.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an automatic detection device for lumbar cistern drainage. Background Technology

[0002] Current lumbar cistern drainage devices on the market lack the function of monitoring intracranial pressure. During drainage, the drainage volume (monitoring the number of drops per minute to estimate the hourly drainage volume) and intracranial pressure are usually controlled by the height of the drainage bottle. Under this drainage method, the drainage volume monitoring lacks accuracy and timely adjustment, and the specific intracranial pressure cannot be known. The use of existing devices currently significantly increases the workload of nursing staff and clinical risks.

[0003] When intracranial pressure (ICP) rises rapidly, such as during the acute phase of cerebral edema or cerebral hemorrhage, or when a patient coughs violently, the pressure distribution within the cranial cavity becomes uneven, and brain tissue and blood vessels are subjected to mechanical compression. Without constant supervision, it is easy for a large amount of fluid to drain in a short period of time, leading to intracranial hemorrhage, or for a long period of no fluid outflow to cause drainage tube blockage. Traditional devices require manual adjustment of the drainage bottle height. If the drainage rate is too slow when intracranial pressure rises suddenly, the pressure will continue to increase. If the drainage bottle height is drastically lowered to quickly reduce pressure, it will lead to excessive cerebrospinal fluid drainage and a sudden drop in intracranial pressure. This method lacks precision, controllability, and flexibility. In clinical practice, the drainage volume and changes in intracranial pressure are important treatment indicators and affect the patient's treatment outcome.

[0004] In addition, patients with lumbar cistern drainage devices inevitably need to raise or lower the head of their bed to eat, rest, and receive treatment. When the number of nurses and beds is relatively low, each adjustment by the patient requires professional personnel to adjust the height of the drainage bottle and monitor the number of droplets flowing out per minute. This situation further increases the workload of nursing staff and adds to the waiting time for patients before the procedure. Utility Model Content

[0005] To address the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide an automatic detection device for lumbar cistern drainage. This device can achieve real-time and accurate detection of intracranial pressure and dynamic calculation of drainage volume through non-contact collaborative monitoring of fiber optic pressure sensors and photoelectric sensors. It also features automatic adjustment of drainage height by a servo motor, a multi-level alarm system, and wireless data transmission capabilities, thereby reducing nursing burden and operational risks and ensuring the continuity and reliability of monitoring.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This utility model provides an automatic detection device for lumbar sac drainage, including a bracket, an L-shaped scale plate, a limiting baffle, and a lifting drive component. Two L-shaped scale plates are mirror-symmetrically arranged on one side of the bracket. The surface of the L-shaped scale plate is provided with scale lines. A limiting baffle is provided between the two end faces of the two L-shaped scale plates. The device also includes a lifting drive component that moves up and down along the length of the bracket.

[0007] In a preferred embodiment, a pointer plate is also included, which is sandwiched between two L-shaped scale plates and connected to a lifting drive. A drainage bottle is provided on the side of the pointer plate away from the lifting drive. The drainage bottle moves vertically synchronously with the lifting drive. A positioning gripper is provided on the outer wall of the drainage bottle near the end. A fixing block is provided on the side of the positioning gripper away from the drainage bottle. The fixing block is connected to a locking device. A waste liquid collection bag is detachably connected to the fixing block through the locking device. The waste liquid collection bag is in communication with the drainage bottle.

[0008] In a preferred embodiment, the device also includes an audible and visual alarm on one side of the support, a drainage tube at the end of the drainage bottle, a three-way valve with three ports, a first port connected to the drainage tube, a second port connected to the lumbar cistern drainage tube, and a third port connected to a medical pressure sensor via a sealed threaded interface. A medical photoelectric sensor is clamped on the outer wall of one end of the drainage tube.

[0009] In a preferred embodiment, the positioning gripper is composed of a convex plate and a concave plate. One side of the convex plate is located on the outer wall of the drainage bottle near the end position, and the other end is inclinedly connected to the concave plate at a 45° angle. The concave plate has a U-shaped block structure, and the open end is away from the convex plate. The open end of the concave plate is connected to two symmetrically arranged fixing blocks. The fixing block has a slot for inserting a locking element.

[0010] In a preferred embodiment, the locking element consists of a knob, a plug, and a limiting protrusion. The center of one side of the knob is connected to one end of the plug, and the other end of the plug has a limiting protrusion on its outer wall. A fan-shaped groove adapted to the limiting protrusion is provided on the slot, and the limiting protrusion is driven to move along the arc trajectory of the fan-shaped groove by turning the knob.

[0011] In the preferred embodiment, the central angle of the fan-shaped groove is 90°, the axial depth of the fan-shaped groove is 3mm, the outer wall of the knob is provided with anti-slip texture, and the rotation stroke of the knob is 0° to 90°.

[0012] In the preferred embodiment, the lifting drive component includes an interconnected control module, an execution module, and a guide module.

[0013] In the preferred embodiment, the execution module includes a drive box, a servo motor, a spur gear, and a gear plate; A gear cavity communicating with a rectangular hole is opened inside the drive box. A bearing seat is provided on the side wall of the gear cavity. The gear plate is fixed at the central axis of the bracket on the side away from the L-shaped scale plate. The servo motor is fixed on the other side of the drive box. The output shaft of the servo motor passes through the drive box and is coaxially connected to the spur gear through the bearing rod. One end of the bearing rod is connected to the bearing seat. The spur gear is located in the gear cavity. The radial part of the spur gear passes through the gear cavity and extends into the rectangular hole. The spur gear meshes with the gear plate to form a meshing transmission.

[0014] In the preferred embodiment, the guide module is a slide bar; The bracket has a hollow rectangular structure. A guide rail is provided on the inner side of the bracket along the central axis. A rectangular hole is opened on one end of the drive box, and the drive box is slidably connected to the guide rail. Two L-shaped scale plates are positioned on opposite sides with two mirror-symmetrical sliding rods. The end face of the drive box has a guide hole that slides through the sliding rods. The axis of the sliding rod is parallel to the length direction of the slide rail. The servo motor drives the spur gear to rotate, and the meshing transmission with the gear plate causes the drive box to move along the vertical direction of the guide rail.

[0015] In the preferred embodiment, the control module includes a control box, a lithium battery pack, a heat sink, and a control chip; The control box is located on one side of the drive box. The control box has a hollow cavity structure with one end open. The lithium battery pack and control chip are integrated inside the control box, and the heat sink is covered on one side opening of the control box.

[0016] This utility model provides an automatic detection device for lumbar sac drainage. Through the cooperation of the above-mentioned structures, and compared with the prior art, it has the following beneficial effects: First, by using non-contact collaborative monitoring of fiber optic pressure sensors and medical photoelectric sensors, high-precision real-time detection of intracranial pressure and dynamic calculation of drainage volume are achieved, solving the technical defects of traditional devices that rely on manual visual inspection, have large errors, and have a high risk of infection. Secondly, based on the closed-loop control of the servo motor for lifting, the fully automatic adjustment of the drainage height and rapid equipment compatibility are achieved, which greatly reduces the nursing workload and operational risks. At the same time, the hierarchical alarm mechanism realizes multi-dimensional early warning through three-color LED lights and buzzers, and the wireless transmission function pushes abnormal data to the nurse station in real time, reducing the burden of manual inspection. Its built-in lithium battery pack serves as a backup power source to ensure continuous monitoring in emergency situations. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is the main view structural diagram of this utility model; Figure 2 This is a utility model Figure 1 A three-dimensional schematic diagram of the center positioning gripper; Figure 3 This is a utility model Figure 2 A magnified view of part A in the middle; Figure 4 This is a utility model Figure 2 Cross-sectional view of the positioning gripper plate; Figure 5 This is a utility model Figure 2 Rear-view perspective of the lifting drive component; Figure 6 This is a utility model Figure 5 A three-dimensional schematic diagram of a spur gear; Figure 7 This is a utility model Figure 5 Front view of the cross section; Figure 8 This is a system module diagram of this utility model.

[0018] In the diagram: 1. Bracket; 2. L-shaped scale plate; 3. Limiting baffle; 4. Lifting drive component; 41. Drive box; 42. Control box; 43. Lithium battery pack; 44. Heat sink; 45. Servo motor; 46. Spur gear; 47. Toothed plate; 48. Slide rod; 5. Drainage bottle; 6. Positioning gripper; 61. Convex plate; 62. Concave plate; 7. Fixing block; 8. Locking component; 81. Rotary knob; 82. Insertion block; 83. Limiting protrusion; 9. Pointer plate; 10. Audible and visual alarm; 11. Drainage tube; 12. Medical photoelectric sensor; 13. Three-way valve; 14. Medical pressure sensor; 15. Waste liquid collection bag. Detailed Implementation

[0019] To better understand the purpose, structure, and function of this utility model, the embodiments and features described herein can be combined with each other without conflict. The utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Example 1 like Figures 1-7 As shown in the figure, this embodiment illustrates an automatic detection device for lumbar sac drainage, including a bracket 1, an L-shaped scale plate 2, a limiting baffle 3, and a lifting drive component 4. Two L-shaped scale plates 2 are mirror-symmetrically fixed to one side of the bracket 1 by bolts. The surface of the L-shaped scale plate 2 is laser-etched with scale lines along the length direction of the bracket 1 to display the real-time height of the drainage bottle 5. The limiting baffle 3 is fixedly connected between the two end faces of the two L-shaped scale plates 2. There are two L-shaped scale plates 2, which are the first L-shaped scale plate and the second L-shaped scale plate, respectively. The first L-shaped scale plate and the second L-shaped scale plate are fixed to one side of the bracket 1 along the length direction of the bracket 1 and facing each other symmetrically. The limiting baffle 3 is respectively provided between the two vertical end faces of the first L-shaped scale plate and the second L-shaped scale plate. It also includes a lifting drive component 4 that moves up and down along the length of the support 1; Furthermore, such as Figure 2 , 5 As shown in Figure 7, the lifting drive component 4 includes a control module, an execution module, and a guide module that are interconnected. The execution module includes a drive box 41, a servo motor 45, a spur gear 46, and a gear plate 47. A gear cavity communicating with a rectangular hole is provided inside the drive box 41. A bearing seat is provided on the side wall of the gear cavity. The gear plate 47 is fixed to the central axis of the bracket 1 on the side away from the L-shaped scale plate 2. The servo motor 45 is fixed to the other side of the drive box 41. The output shaft of the servo motor 45 passes through the drive box 41 and is coaxially connected to the spur gear 46 through the bearing rod. One end of the bearing rod is connected to the bearing seat. The spur gear 46 is located in the gear cavity. The radial part of the spur gear 46 passes through the gear cavity and extends into the rectangular hole. The spur gear 46 meshes with the gear plate 47 and forms a meshing transmission.

[0021] The guide module is slide bar 48; The bracket 1 has a hollow rectangular structure. A linear guide rail is provided on the inner side of the bracket 1 along the central axis. A rectangular hole is provided on one end of the drive box 41. The drive box 41 and the guide rail form a sliding fit, and can slide linearly along the guide rail. Two L-shaped scale plates 2 are provided with two mirror-symmetrical slide rods 48 between their opposite sides. The end face of the drive box 41 is provided with a guide hole that is slidably connected to the slide rods 48. The axis of the slide rods 48 is parallel to the length direction of the slide rail. The servo motor 45 drives the spur gear 46 to rotate, and the meshing transmission with the gear plate 47 causes the drive box 41 to move reciprocally in a vertical linear motion along the guide rail.

[0022] The control module includes a control box 42, a lithium battery pack 43, a heat sink 44, and a control chip. The control box 42 is located on one side of the drive box 41. The control box 42 has a hollow cavity structure with one end open. The lithium battery pack 43 and the control chip are integrated inside the control box 42. The heat sink 44 covers and seals the opening on one side of the control box 42 to dissipate heat from the lithium battery pack 43 and the heat-generating components of the control chip.

[0023] In practice, the servo motor 45 responds to the drive signal of the control chip and drives the drive box 41 to move up and down along the vertical direction of the slide rail through the meshing transmission action of the spur gear 46 and the toothed plate 47.

[0024] In this embodiment, as Figure 1As shown, it also includes a pointer plate 9 sandwiched between the opposing sides of the first L-shaped scale plate and the second L-shaped scale plate and fixed to the side wall of the lifting drive component 4. The pointer plate 9 is a transparent acrylic plate with a thickness of 1.5cm, used to point to the scale line on the L-shaped scale plate 2. The side of the pointer plate 9 away from the lifting drive component 4 is detachably connected to the drainage bottle 5. The detachable method is a snap-fit ​​connection. The drainage bottle 5 moves vertically synchronously with the driving of the lifting drive component 4. A positioning gripper 6 is provided on the outer wall of the drainage bottle 5 near the end position. A fixing block 7 is provided on the side of the positioning gripper 6 away from the drainage bottle 5. The fixing block 7 is connected to a locking component 8. The fixing block 7 is detachably connected to the waste liquid collection bag 15 through the locking component 8. The waste liquid collection bag 15 is sealed and connected to the drain port at the end of the drainage bottle 5 through a liquid guide tube to ensure that the waste liquid collection bag 15 stably receives the drainage liquid during the drainage process.

[0025] In this embodiment, as Figure 1 As shown, it also includes an audible and visual alarm 10 located on one side of the bracket 1. The audible and visual alarm 10 is a modular component, including a red, yellow and green high-brightness surface-mount LED array and a piezoelectric ceramic buzzer. It also has an alarm drive circuit, which is integrated into the PWM output terminal of the main control chip and triggers a multi-state alarm according to the monitoring signal threshold. A drainage tube 11 is provided at the end of the drainage bottle 5; It also includes a three-way valve 13 with three ports, namely a first port, a second port, and a third port. The first port is connected to the drainage tube 11, the second port is connected to the lumbar cistern drainage tube, and the third port is connected to the medical pressure sensor 14 through a sealed threaded interface. It can collect intracranial pressure signals in real time and provide data support for subsequent pressure monitoring. A medical photoelectric sensor 12 is clamped on the outer wall of one end of the drainage tube 11, forming an optical path on both radial sides of the drainage tube 11. The medical photoelectric sensor 12 emits a light beam, such as infrared light or visible light, through the drainage tube 11 and detects the changes in light signal due to the obstruction or scattering caused by the liquid flow, thereby ensuring the sealing of the cerebrospinal fluid flow path and realizing real-time monitoring of intracranial pressure.

[0026] Specifically, the lithium battery pack 43 is electrically connected to the main control chip, the audible and visual alarm 10 and the servo motor 45 respectively, forming an independent power supply circuit to provide a stable power supply; It should be noted that the medical photoelectric sensor 12 can calculate the flow rate of the liquid based on the frequency or intensity change of the light signal interruption per unit time. At the same time, when the flow rate is abnormal, such as too fast or too slow, it will trigger an alarm or link the servo motor 45 to adjust the height of the drainage bottle to maintain the stability of intracranial pressure.

[0027] During implementation, the medical pressure sensor 14 collects intracranial pressure data in real time. When the pressure exceeds the preset threshold, the control chip triggers the audible and visual alarm 10, the LED flashes and emits a buzzer. At the same time, the control chip pushes the alarm information to the nurse station terminal.

[0028] The control chip receives data from the medical pressure sensor 14 and the photoelectric sensor 12, calculates the target height through a PID algorithm, drives the servo motor 45 to rotate, and the meshing of the spur gear 46 and the toothed plate 47 converts the rotational motion into linear motion. The drive box 41 moves vertically along the slide bar 48, driving the drainage bottle 5 to rise and fall synchronously, thereby realizing the dynamic adjustment of intracranial pressure.

[0029] Furthermore, such as Figure 3 , 4 As shown, the positioning gripper 6 is composed of a convex plate 61 and a concave plate 62. One side of the convex plate 61 is located on the outer wall of the drainage bottle 5 near the end position, and the other end is inclinedly connected to the concave plate 62 at a specific angle. The concave plate 62 has a U-shaped block structure, and its open end is away from the convex plate 61. Two symmetrically arranged fixing blocks 7 are connected to the open end of the concave plate 62 respectively. It should be noted that the specific angle is between 30° and 60°; The convex plate 61, the concave plate 62, and the two fixing blocks 7 are integrally formed. The fixing block 7 has a slot for the locking element 8 to be inserted; The locking component 8 consists of a knob 81, a plug 82 and a limiting protrusion 83. The center of one side of the knob 81 is connected to one end of the plug 82, and the other end of the plug 82 has a limiting protrusion 83 on its outer wall. A fan-shaped groove adapted to the limiting protrusion 83 is provided on the slot. By turning the knob 81, the limiting protrusion 83 is driven to move along the arc trajectory of the fan-shaped groove, so that the locking member 8 is locked or released in the slot of the fixing block 7.

[0030] The central angle of the fan-shaped groove is 90°, the axial depth of the fan-shaped groove is 3mm, the outer wall of the knob 81 is provided with anti-slip texture, and the rotation stroke of the knob 81 is 0° to 90°.

[0031] When it is necessary to replace the waste liquid collection bag 15, rotate the knob 81 90°, and the limiting protrusion 83 slides along the fan-shaped groove and disengages from the slot, so that the waste liquid collection bag 15 can be removed. When installing, align the insert block 82 with the slot, rotate the knob 81 to the initial position, and the limiting protrusion 83 will be inserted into the bottom of the fan-shaped groove to achieve reliable fixation of the waste liquid collection bag 15.

[0032] To enable those skilled in the art to better understand the present invention, the above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

[0033] It should also be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein.

Claims

1. An automatic detection of lumbar cistern drainage device, comprising a bracket (1), an L-shaped scale plate (2), a limiting baffle (3) and a lifting driving element (4), two L-shaped scale plates (2) are symmetrically arranged on one side of the bracket (1), the surface of the L-shaped scale plate (2) is provided with a scale line, and the limiting baffle (3) is arranged between the end faces of the two L-shaped scale plates (2) respectively, characterized in that, It is also equipped with a lifting drive (4) that moves up and down along the length of the support (1); It also includes a pointer plate (9) sandwiched between two L-shaped scale plates (2) and connected to the lifting drive (4). A drainage bottle (5) is provided on the side of the pointer plate (9) away from the lifting drive (4). The drainage bottle (5) moves vertically synchronously with the driving of the lifting drive (4). A positioning gripper (6) is provided on the outer wall of the drainage bottle (5) near the end position. A fixing block (7) is provided on the side of the positioning gripper (6) away from the drainage bottle (5). The fixing block (7) is connected to a locking member (8). The fixing block (7) is detachably connected to a waste liquid collection bag (15) through the locking member (8). The waste liquid collection bag (15) and the drainage bottle (5) are interconnected. It also includes an audible and visual alarm (10) on one side of the support (1), and a drainage tube (11) at the end of the drainage bottle (5); it also includes a three-way valve (13) with three ports, the first port being connected to the drainage tube (11), the second port being connected to the lumbar cistern drainage tube, and the third port being connected to a medical pressure sensor (14) through a sealed threaded interface, and a medical photoelectric sensor (12) being clamped on the outer wall of one end of the drainage tube (11). The lifting drive component (4) includes an interconnected control module, an execution module, and a guide module; The execution module includes a drive box (41), a servo motor (45), a spur gear (46), and a gear plate (47). Inside the drive box (41), there is a gear cavity that communicates with a rectangular hole. A bearing seat is provided on the side wall of the gear cavity. The gear plate (47) is fixed at the central axis of the bracket (1) away from the L-shaped scale plate (2). The servo motor (45) is fixed on the other side of the drive box (41). The output shaft of the servo motor (45) passes through the drive box (41) and is coaxially connected to the spur gear (46) through a bearing rod. One end of the bearing rod is connected to the bearing seat. The spur gear (46) is located in the gear cavity. The radial part of the spur gear (46) passes through the gear cavity and extends into the rectangular hole. The spur gear (46) meshes with the gear plate (47) to form a meshing transmission. The guide module is a slide rod (48); the bracket (1) has a hollow rectangular structure, and a guide rail is provided on the inner side of the bracket (1) along the central axis. A rectangular hole is opened on one end of the drive box (41), and the drive box (41) is slidably connected to the guide rail; two slide rods (48) are provided between the opposite sides of the two L-shaped scale plates (2), and a guide round hole is opened on the end face of the drive box (41) to be slidably connected to the slide rod (48). The axis of the slide rod (48) is parallel to the length direction of the slide rail. The servo motor (45) drives the spur gear (46) to rotate, and the meshing transmission with the gear plate (47) causes the drive box (41) to move along the vertical direction of the guide rail; The control module includes a control box (42), a lithium battery pack (43), a heat sink (44), and a control chip; the control box (42) is located on one side of the drive box (41), and the control box (42) has a hollow cavity structure with one end open. The lithium battery pack (43) and the control chip are integrated inside the control box (42), and the heat sink (44) is covered on one side opening of the control box (42); The control chip receives data from the medical pressure sensor (14) and the photoelectric sensor (12), calculates the target height through the PID algorithm, drives the servo motor (45) to rotate, and the meshing of the spur gear (46) and the toothed plate (47) converts the rotational motion into linear motion. The drive box (41) moves vertically along the slide bar (48), driving the drainage bottle (5) to rise and fall synchronously, thereby realizing the dynamic adjustment of intracranial pressure.

2. The automatic detection device for lumbar sac drainage according to claim 1, characterized in that, The positioning gripper (6) is composed of a convex plate (61) and a concave plate (62). One side of the convex plate (61) is located on the outer wall of the drainage bottle (5) near the end position, and the other end is inclinedly connected to the concave plate (62) at a 45° angle. The concave plate (62) has a U-shaped block structure, and the open end is away from the convex plate (61). The open end of the concave plate (62) is connected to two symmetrically arranged fixing blocks (7). The fixing block (7) has a slot for inserting the locking element (8).

3. The automatic detection device for lumbar sac drainage according to claim 2, characterized in that, The locking component (8) consists of a knob (81), a plug (82) and a limiting protrusion (83). The center of one side of the knob (81) is connected to one end of the plug (82), and the other end of the plug (82) is provided with a limiting protrusion (83). A fan-shaped groove adapted to the limiting protrusion (83) is provided on the slot. The limiting protrusion (83) is driven to move along the arc trajectory of the fan-shaped groove by turning the knob (81).

4. The automatic detection device for lumbar sac drainage according to claim 3, characterized in that, The central angle of the fan-shaped groove is 90°, the axial depth of the fan-shaped groove is 3mm, the outer wall of the knob (81) is provided with anti-slip texture, and the rotation stroke of the knob (81) is 0° to 90°.

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