A drainage nursing device for neurosurgery commaya capsule

Abstract

The application relates to the technical field of neurosurgery, in particular to a drainage nursing device for a neurosurgery Ommaya capsule. The device comprises a puncture part, a puncture hose and a puncture needle arranged on the puncture hose; a middle end part, the middle end part comprising a three-way connector, the three-way connector being connected with one side of the puncture hose far away from the puncture needle; a collection part, the collection part comprising a collection hose; a fixing assembly, the fixing assembly being arranged on one side of the puncture part; and a follow-up adjusting assembly, the follow-up adjusting assembly being arranged on the fixing assembly. Compared with the prior art, the device is positioned by the fixing assembly and the follow-up adjusting assembly after puncture, the puncture hose and the puncture needle are positioned by the positioning disc, and the tension of the periphery of the puncture part is self-adaptively adjusted according to different postures of the patient, such as lying, half-lying, sitting, standing and the like.

Description

Technical Field

[0001] This invention relates to the field of neurosurgical technology, and more particularly to a drainage and care device for a neurosurgical ommaya sac. Background Technology

[0002] Ommaya pouches are commonly used subcutaneous fluid storage / drug delivery devices in neurosurgery, clinically used for repeated punctures for fluid aspiration, continuous drainage, or drug administration. In existing technologies, one approach focuses on the puncture and drainage pathway itself. For example, Chinese patent document CN107496013A discloses an intracranial Ommaya pouch puncture and drainage needle, which includes a puncture needle, drainage tube, medical three-way connector, and drainage bag or bottle, primarily addressing issues of puncture drainage, flow regulation, and tubing patency. Another approach focuses on external fixation. For example, Chinese patent document CN219538452U describes an external fixation device for Ommaya pouch puncture and drainage. This device uses a body that can be adhered to the scalp, an inclined surface matching the puncture angle of the scalp needle, and a receiving groove to externally fix the scalp needle and drainage tube, reducing displacement caused by head movement.

[0003] However, the existing technologies mentioned above are still mainly focused on two aspects: "establishing a drainage pathway" or "statically fixing the puncture needle / drainage tube". For Ommaya bag drainage care, when patients frequently switch between supine, semi-recumbent, sitting, and standing positions, the tension of the scalp skin, the force on the soft tissue, and the traction direction of the external tube will change accordingly. Existing static fixation methods usually cannot automatically adjust the degree of restraint on the puncture site according to changes in body position, which can easily lead to problems such as loose fixation when sitting or standing, resulting in downward traction on the puncture site, or tight local pressure and decreased comfort when supine.

[0004] Furthermore, most existing fixation mechanisms are direct fixation or direct limiting structures, lacking buffering for minor patient movements. When a patient only makes slight head turns, nods, rolls over, or small movements, if the fixation mechanism directly transmits the displacement to the puncture point or directly converts it into a tightening / loosening action, it can easily lead to fluctuating pressure around the puncture site, which is detrimental to the comfort and stability of long-term drainage care.

[0005] Therefore, this application discloses a drainage care device for a neurosurgical ommaya sac. Summary of the Invention

[0006] In view of this, the purpose of this invention is to provide a drainage care device for ommaya bags in neurosurgery, in order to solve the problems that existing ommaya bag drainage care devices mostly only have the function of establishing drainage pathways or static fixation, which makes it difficult to adaptively adjust the tension of the puncture site according to changes in the patient's body position, and lacks buffering treatment for minor movements, which easily affects puncture stability and wearing comfort.

[0007] To achieve the above objectives, the present invention provides a drainage and care device for a neurosurgical Ommaya sac, comprising: a puncture section, wherein the puncture section is provided with a puncture tube and a puncture needle disposed on the puncture tube; a middle section, wherein the middle section includes a three-way connector, the three-way connector being connected to the side of the puncture tube away from the puncture needle; a collection section, wherein the collection section includes a collection tube, one end of which is connected to one port of the three-way connector, and a collection bag is disposed on the side of the collection tube away from the three-way connector; a fixation component, wherein the fixation component is disposed on one side of the puncture section, the fixation component being used to fix the puncture section; and a follow-up adjustment component, wherein the follow-up adjustment component is disposed on the fixation component, the follow-up adjustment component being used to adjust the tension of the puncture position according to the patient's posture.

[0008] Preferably, the fixing component includes a positioning plate fixedly sleeved on the outer surface of the puncture tube. The positioning plate is in the shape of a suction cup and is used to adhere to the periphery of the patient's puncture site during fixing. It is further fixed with medical tape. A first fixing block is provided on the side of the positioning plate away from the puncture tube.

[0009] Preferably, the follow-up adjustment assembly includes an airbag fixedly installed inside the positioning plate and a rotating block rotatably installed on the first fixed block. The rotating block is fan-shaped, and a positioning ring is provided on one side of the rotating block. The positioning ring is movably sleeved on the outer surface of the puncture tube.

[0010] Preferably, a lightweight slide rail is provided on the side of the rotating block away from the positioning ring, a plastic toothed plate is slidably mounted on the lightweight slide rail, and limiting blocks for limiting the position are respectively provided at both ends of the lightweight slide rail. A second fixing block is fixedly mounted on the side of the positioning plate away from the airbag, and a rotating rod is rotatably mounted on the second fixing block. A first gear is fixedly connected to one side of the rotating rod, and the first gear meshes with the plastic toothed plate. A second gear is fixedly mounted on the other side of the rotating rod. A piston rod is provided on one side of the airbag, and a piston is provided on the side of the piston rod close to the airbag. Several toothed grooves are opened at the bottom of the piston rod, and the toothed grooves mesh with the second gear.

[0011] Preferably, when the patient is standing or sitting, the rotating block moves to one side with the center of gravity, the plastic toothed plate drives the first gear to rotate, and simultaneously drives the second gear to drive the piston rod to move into the airbag, inflating the airbag; when the patient is in a sleeping position, the rotating block moves to the other side with the center, the second gear will drive the piston rod to move in the opposite direction, deflating the airbag.

[0012] Preferably, the first fixing block is provided with two triangular limiting corner blocks, which are used to limit the rotation stroke of the rotating block.

[0013] Preferably, the length of the lightweight slide rail is longer than the length of the plastic toothed plate. When the patient is moving, the offset of the rotating block will first cause the plastic toothed plate to slide slightly on the lightweight slide rail, but will not drive the first gear to rotate.

[0014] Preferably, the airbag is made of a skin-friendly material.

[0015] Preferably, a capped interface is provided between the tee connector and the collecting hose for connection.

[0016] Preferably, a scale is provided on the top of the collection bag.

[0017] The beneficial effects of this invention are: This drainage and nursing device for ommaya bags in neurosurgery, through the cooperation of a fixing component and a follow-up adjustment component, uses a positioning plate to provide basic positioning for the puncture tube and puncture needle after puncture. Then, the follow-up adjustment component adaptively adjusts the tension around the puncture site according to different posture changes of the patient, such as supine, semi-recumbent, sitting, and standing. When the patient is sitting or standing, it can appropriately increase the flexible pressure and limiting effect on the puncture site, reducing the continuous traction on the puncture point caused by the collection tube falling and swinging. When the patient is supine or sleeping, it can appropriately reduce the local pressure intensity, avoiding discomfort caused by long-term pressure on the puncture site. Thus, the puncture site maintains good stability and comfort in different positions, taking into account the fixation reliability during drainage and the wearability during patient care, which helps to reduce the risk of puncture needle deviation, dislodgement, and local pressure injury.

[0018] The rotating block, lightweight slide rail, plastic toothed plate, first gear, second gear, and piston rod form a progressive transmission relationship, which is further limited by the limiting corner block and limiting block to restrict the range of motion. This gives the follow-up adjustment component the working characteristics of first buffering and then adjusting. When the patient slightly raises, lowers, turns, rolls over, or makes small positional adjustments, the offset of the rotating block is first absorbed by the small-range sliding of the plastic toothed plate on the lightweight slide rail, without immediately driving the first gear to move. This avoids frequent inflation and deflation of the airbag and prevents sudden pressure fluctuations around the puncture site. When the patient undergoes a more significant positional change, the mechanism then outputs an effective adjustment. Therefore, it not only improves the device's tolerance to minor movements but also reduces wear caused by frequent mechanical movements, thus improving the overall stability, smoothness, and comfort of the drainage care process.

[0019] The puncture site, middle section, and collection section are pre-connected to form a continuous drainage path from the puncture needle, puncture tubing, T-connector, collection tubing to the collection bag. A capped interface is installed between the T-connector and the collection tubing, and a scale is installed above the collection bag, thus realizing integrated operation of puncture, drainage, collection, and observation. During use, the fluid in the bag can continuously enter the collection bag along the closed path. Medical staff can use the scale to observe the drainage volume and trend in real time, and can temporarily close, switch the path, sample, or perform auxiliary treatment through the T-connector and capped interface, reducing the chance of contamination caused by frequent disassembly and reconnection, improving the continuity and standardization of drainage care, and also facilitating the observation of the patient's condition and nursing records. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this 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 for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall planar structure of the present invention; Figure 3 This is a schematic diagram of the puncture site structure of the present invention; Figure 4 This is a schematic diagram of the fixed component and the follow-up adjustment component of the present invention; Figure 5 This is a schematic diagram of the operating state of the follow-up adjustment component of the present invention; Figure 6 This is a schematic diagram of the follow-up adjustment component structure of the present invention; Figure 7This is a partial structural diagram of the follow-up adjustment component of the present invention.

[0022] The diagram is marked as follows: 1. Puncture tubing; 2. Puncture needle; 3. T-connector; 4. Collection tubing; 5. Collection bag; 6. Scale; 7. Capped connector; 8. Positioning plate; 9. Airbag; 10. First fixing block; 11. Limiting corner block; 12. Rotating block; 13. Positioning ring; 14. Lightweight slide rail; 15. Limiting block; 16. Plastic toothed plate; 17. Second fixing block; 18. Rotating rod; 19. First gear; 20. Second gear; 21. Piston rod; 22. Gear groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figures 1 to 7As shown, a drainage and care device for a neurosurgical ommaya sac includes a puncture section with a puncture tube 1 and a puncture needle 2 mounted on the puncture tube 1; a middle section with a three-way connector 3 connected to the side of the puncture tube 1 away from the puncture needle 2; a collection section with a collection tube 4, one end of which is connected to one end of the three-way connector 3, and a collection bag 5 on the side of the collection tube 4 away from the three-way connector 3; and a fixation component located on one side of the puncture section for fixing... The puncture site is fixed; a follow-up adjustment component is set on the fixed component. The follow-up adjustment component is used to follow the patient's posture and adjust the tension of the puncture position. The fixed component includes a positioning plate 8 fixedly sleeved on the outer surface of the puncture tube 1. The positioning plate 8 is suction cup shaped and is used to adhere to the periphery of the patient's puncture site during fixation. It is fixed with medical tape. A first fixing block 10 is set on the side of the positioning plate 8 away from the puncture tube 1. A capped interface 7 is set between the three-way connector 3 and the collection tube 4 for connection. A scale 6 is set above the collection bag 5. In use, the puncture site, middle section, and collection section are pre-connected to form a continuous drainage path. The puncture needle 2 is positioned at the front end of the puncture tubing 1, and the rear end of the puncture tubing 1 is connected to the three-way connector 3. The collection tubing 4 is connected to one end of the three-way connector 3 via a capped interface 7, and the distal end of the collection tubing 4 is connected to a collection bag 5. After routine disinfection and draping, medical personnel puncture the patient's Ommaya sac at the corresponding puncture site. Upon successful puncture, cerebrospinal fluid or sac fluid can enter the puncture tubing 1 through the puncture needle 2, then flow into the three-way connector 3 and further into the collection tubing 4 and collection bag 5, thus forming a closed drainage path from the puncture site to the collection section. This path can... This reduces the chance of contamination caused by traditional repeated aspiration and frequent disassembly, improving asepticness and continuity during the nursing process. After puncture, the positioning disc 8 in the fixation assembly is placed against the skin around the puncture site. The suction cup-like structure of the positioning disc 8 forms an initial attachment with the skin surface, and then medical tape is used for peripheral fixation. This allows the puncture catheter 1 to be supported and positioned outside the puncture point. The positioning disc 8 can disperse the external forces on the puncture catheter 1 and puncture needle 2, preventing catheter shaking or pulling from directly affecting the puncture point. This helps reduce the probability of puncture needle deviation, dislodgement, and local discomfort for the patient. The first fixing block 10, located on the side of the positioning disc 8 away from the puncture catheter 1, provides stability for the subsequent follow-up adjustment assembly. The basic structure allows for fixation and adjustment to be concentrated outside the puncture site, which does not hinder the puncture procedure and facilitates nursing observation. During drainage, fluid continuously enters the collection bag 5, and the scale 6 above the collection bag 5 visually displays the drainage volume, allowing medical staff to monitor the drainage rate, cumulative drainage volume, and fluid changes in real time. This provides a basis for subsequent patient assessment, nursing records, and determining whether to continue drainage, improving the standardization of nursing management. When temporary closure, operation switching, or auxiliary treatment is required, a closed connection and pathway switching can be achieved using the three-way connector 3 and the capped interface 7. The capped interface 7 remains closed when not in operation, reducing the risk of external contamination entering the pathway and facilitating... When needed, the device can be used for drainage, observation, sampling, or other nursing procedures, improving its flexibility. When the patient changes from supine to semi-recumbent, sitting, or standing, or from sitting to lying down, the follow-up adjustment component on the fixed component moves with the patient's posture changes, adaptively adjusting the tension around the puncture site. That is, when the patient's posture changes, causing changes in the stress state of the head skin, soft tissue, and external tubing, the follow-up adjustment component can adjust the degree of constraint on the puncture site accordingly. When stability is needed, the pressure and limiting effect can be appropriately increased to reduce the traction caused by catheter drop or swinging. When comfort and fit are needed, the device can be appropriately relaxed so that the area around the puncture point will not be compressed or uncomfortable due to continuous tension.Meanwhile, the adaptive adjustment component is preferably equipped with a buffer stroke, so that it does not immediately and abruptly clamp or loosen during slight head turning, slight nodding, normal turning over, or minor positional adjustments by the patient. Instead, it allows the puncture tubing 1 to move relatively buffered within a certain range, thus ensuring protection of the puncture site while improving patient comfort and fault tolerance during activity. This avoids the impact on the nursing experience caused by frequent triggering of rigid locking due to small movements. Therefore, in actual use, this device achieves the synergistic effects of establishing a puncture pathway, fixing and stabilizing the puncture site, closed drainage collection, visual observation of drainage volume, and automatic adjustment of tension and relaxation according to changes in body position. It meets the requirements of stability, asepticity, and observability for ommaya sac drainage care in neurosurgery, while also taking into account the comfort and adaptability when the patient changes position. It has the functions of reducing the risk of traction, reducing the chance of contamination, improving nursing convenience, and improving drainage continuity.

[0026] like Figures 3 to 7 As shown, the follow-up adjustment assembly includes an airbag 9 fixedly installed inside the positioning plate 8, and a rotating block 12 rotatably installed on the first fixed block 10. The rotating block 12 is fan-shaped, and a positioning ring 13 is provided on one side of the rotating block 12. The positioning ring 13 is movably sleeved on the outer surface of the puncture tube 1. A lightweight slide rail 14 is provided on the side of the rotating block 12 away from the positioning ring 13. A plastic toothed plate 16 is slidably installed on the lightweight slide rail 14. Limiting blocks 15 for limiting are provided at both ends of the lightweight slide rail 14. A second fixed block 17 is fixedly installed on the side of the positioning plate 8 away from the airbag 9. A rotating rod 18 is rotatably installed on the second fixed block 17. A first gear 19 is fixedly connected to one side of the rotating rod 18. The first gear 19 and the plastic toothed plate 16 are connected to each other. The rotating block 12 is fixedly mounted on the other side of the rotating rod 18. A piston rod 21 is provided on one side of the airbag 9. A piston is provided on the side of the piston rod 21 near the airbag 9. Several toothed grooves 22 are opened at the bottom of the piston rod 21. The toothed grooves 22 mesh with the second gear 20. When the patient is standing or sitting, the rotating block 12 moves to one side with the center of gravity. The plastic toothed plate 16 drives the first gear 19 to rotate, which in turn drives the second gear 20 to drive the piston rod 21 to move into the airbag 9 and inflate the airbag 9. When the patient is in a sleeping position, the rotating block 12 moves to the other side with the center of gravity. The second gear 20 will drive the piston rod 21 to move in the opposite direction and de-inflate the airbag 9. The airbag 9 is made of skin-friendly material. After the puncture is completed, the positioning disc 8 is attached to the periphery of the patient's puncture site. The positioning disc 8 adheres to the patient's skin surface using a suction cup-like structure and can be further secured with medical tape. This provides support and positioning for the puncture tubing 1 outside the puncture point, reducing the probability of the puncture needle 2 being directly pulled during changes in patient position, head rotation, or nursing care. This helps reduce the risk of the puncture needle 2 shifting, shaking, or dislodging. The airbag 9, located inside the positioning disc 8, is situated between the positioning disc 8 and the patient's skin or adjacent to the attachment area. It provides varying degrees of flexible pressure around the puncture site under different patient positions. Furthermore, because the airbag 9 is made of skin-friendly material, it provides excellent contact with the patient's skin. When touched, it can reduce discomfort caused by direct pressure from rigid components, improving comfort during long-term wear and drainage care. When the patient is standing or sitting, due to changes in the direction of gravity, the rotating block 12, which is mounted on the first fixed block 10, deflects to one side around its rotation mounting point. The rotating block 12 is fan-shaped, and the positioning ring 13 on one side is movably sleeved on the outer surface of the puncture tube 1. Therefore, when the rotating block 12 deflects, it can provide follow-up guidance and limitation to the outside of the puncture tube 1, making the force direction of the puncture tube 1 more compatible with the patient's current position, reducing direct pulling on the puncture point when the tube is suspended or falling. At the same time, the light sliding on the other side of the rotating block 12... The rail 14 swings synchronously with the rotating block 12. The plastic toothed plate 16, which is slidably mounted on the lightweight slide rail 14, slides relative to the lightweight slide rail 14 under the action of inertia, its own weight, or the action of cooperating with adjacent components. When the deflection amplitude of the rotating block 12 reaches a predetermined degree, the plastic toothed plate 16 moves further along the lightweight slide rail 14 and meshes with the first gear 19, thereby driving the first gear 19 to rotate. The first gear 19 drives the second gear 20 on the other side to rotate synchronously through the rotating rod 18 fixed coaxially with it. The second gear 20 then meshes with several toothed grooves 22 opened at the bottom of the piston rod 21, thereby converting the angular displacement of the rotating block 12 caused by the change in body position into the piston rod 21. In a linear motion, the piston rod 21, located near the side of the airbag 9, pushes inward within the corresponding cavity of the airbag 9, causing the airbag 9 to gradually inflate. After inflation, the airbag 9 provides greater flexible support and adhesion pressure to the area where the positioning disc 8 is attached, thus creating a relatively high level of stability constraint around the puncture site when the patient is standing or sitting. This is because the puncture tubing 1 is more prone to falling, swinging, and continuous traction under the influence of gravity in this state. Therefore, by moderately inflating the airbag 9, the adhesion stability of the positioning disc 8 to the local skin and soft tissue can be improved, reducing the relative displacement of the puncture site and making the puncture site more stable when the patient is active, which is conducive to ensuring the continuous patency of the drainage path.When the patient changes from a sitting or standing position to a lying or sleeping position, the direction of gravity changes again. The rotating block 12 follows the center of gravity and deflects to the other side. The plastic toothed plate 16 slides in the opposite direction along the lightweight slide rail 14. When the deflection reaches a certain threshold, the plastic toothed plate 16 drives the first gear 19 to rotate in the opposite direction. The first gear 19, through the rotating rod 18, drives the second gear 20 to rotate in the opposite direction. The second gear 20 drives the piston rod 21 to move back away from the airbag 9, thereby deflating the airbag 9 or placing it in a lower inflation state. The pressure exerted by the capsule 9 on the patient's local skin is reduced, preventing the area around the puncture site from being under prolonged tight pressure when the patient is lying down or sleeping. This helps alleviate local pressure marks, swelling, pain, and discomfort. Furthermore, since the overall pulling force of the puncture tubing 1 is relatively reduced in the sleeping position, appropriately reducing the pressure will not affect the fixation effect and will achieve a comfortable fit. Throughout the adjustment process, limiting blocks 15 are respectively located at both ends of the lightweight slide rail 14 to limit the maximum sliding range of the plastic toothed plate 16 and prevent it from detaching. The lightweight slide rail 14 may experience gear instability due to excessive displacement. Simultaneously, it maintains the transmission between the rotating block 12, plastic gear plate 16, first gear 19, second gear 20, and piston rod 21 within the predetermined working stroke, thus ensuring that the inflation and deflation of the airbag 9 are within a controllable range, preventing excessive inflation leading to excessive local pressure or excessive deflation leading to insufficient fixation. Therefore, the follow-up adjustment component operates through "body position change—rotating block 12 deflection—plastic gear plate 16 buffer sliding—first gear 19 and second gear 20 transmission—piston rod 21..." The action chain of "reciprocating motion of the plunger 21 - inflation or deflation of the airbag 9" realizes automatic adjustment of the tension around the puncture site, which can enhance the stable support of the puncture site when the patient is standing or sitting, and reduce the local pressure intensity when the patient is lying down or sleeping. At the same time, the sliding stroke of the plastic toothed plate 16 on the light slide rail 14 can buffer and accommodate small movements. This not only reduces the pulling effect of catheter drop and shaking on the puncture point and improves the reliability of puncture site fixation, but also avoids local discomfort caused by rigid fixation. The follow-up adjustment structure in this application is not a complex mechanical transmission mechanism used in the traditional sense to bear large loads, but a lightweight, micro-stroke adjustment structure designed for the Ommaya sac drainage nursing scenario in neurosurgery. Specifically, components such as the lightweight slide rail 14 and the plastic toothed plate 16 mainly serve the functions of guidance, limiting, and micro-transmission. Their structural dimensions are small, and they can be made of medical-grade plastics, lightweight polymer materials, or other low-weight materials, thereby significantly reducing the overall weight and the additional burden on the patient's puncture area. This type of structure does not require the output of large mechanical forces, nor does it involve high-intensity, continuous mechanical movement. It is only used to achieve a small-range, flexible posture response and support adjustment when the patient's position changes or the head moves slightly. Therefore, it does not create the bulkiness and irritation associated with traditional complex mechanical structures. Compared to simply relying on adhesives and sponges... Instead of using pads or static fixation devices, this application utilizes lightweight, follow-up components in conjunction with a flexible airbag to achieve adaptive adjustment of the support state around the puncture site. While ensuring a simple structure, ease of nursing operation and replacement, it helps reduce local traction and compression caused by changes in body position or slight movements, improving nursing comfort and fixation stability. This better meets the actual requirements of clinical drainage nursing for sterility, portability, and low irritation. It should be noted that the above-mentioned structural design in this application is not a stacked design to increase the mechanical complexity of the device, but a targeted configuration to address the practical problem of balancing "fixation stability" and "body position adaptability" in Ommaya bag drainage nursing. The cooperation relationship between the components is clear, the range of motion is limited, and the function is concentrated, mainly serving the adjustment of the tension and relaxation state around the puncture area and the micro-motion buffering.

[0027] like Figures 3 to 7 As shown, the first fixed block 10 is provided with two triangular limiting corner blocks 11, which are used to limit the rotation stroke of the rotating block 12.

[0028] The length of the lightweight slide rail 14 is longer than the length of the plastic toothed plate 16. When the patient is moving, the offset of the rotating block 12 will first cause the plastic toothed plate 16 to slide slightly on the lightweight slide rail 14, but will not drive the first gear 19 to rotate. In this embodiment, the length of the lightweight slide rail 14 is set to be longer than the length of the plastic toothed plate 16, so that the plastic toothed plate 16 can obtain a certain relative sliding margin on the lightweight slide rail 14. When the patient is in a daily activity state, such as slightly raising or lowering the head, turning the head left or right, slightly turning over, or making small posture adjustments, the rotating block 12 will first produce a small angle displacement under the influence of gravity and inertia. The lightweight slide rail 14 set on the rotating block 12 will then deflect synchronously. However, the plastic toothed plate 16 does not immediately transmit all of this displacement to the subsequent gear transmission mechanism at this stage, but rather... The device preferentially slides along the lightweight slide rail 14 within a small range, thus forming a preset buffer stroke or idle stroke. Within this buffer stroke, although the plastic toothed plate 16 is displaced, it has not yet provided the first gear 19 with an effective and continuous driving force sufficient to overcome the transmission resistance and drive it to rotate. Therefore, the first gear 19 will not rotate, or will only produce a small displacement that does not affect the subsequent adjustment function. Correspondingly, the second gear 20, piston rod 21, and airbag 9 will not immediately enter a significant inflation or deflation state. Through the above settings, the follow-up adjustment component can respond to slight natural movements of the patient. It can absorb and buffer some displacement changes first, avoiding the device being overly sensitive to small movements, preventing the airbag 9 from frequently inflating and deflating due to the patient's slight movements, and thus avoiding sudden changes in pressure around the puncture site. This not only improves the patient's comfort during drainage care but also reduces frequent movements and mechanical wear of transmission components, improving the overall stability of the follow-up adjustment assembly. When the patient's posture changes further increase, exceeding the free sliding range of the plastic toothed plate 16 on the lightweight slide rail 14, the plastic toothed plate 16 begins to output effective driving force to the first gear 19, and then... The first gear 19, the second gear 20, the piston rod 21, and the airbag 9 are driven to adjust in a coordinated manner according to a predetermined logic, thereby achieving a smooth transition from the "micro-motion buffer state" to the "effective adjustment state". Therefore, this structure enables the device to have the working characteristics of buffering first and then responding. It can accommodate small movements when the patient is awake and active, reducing accidental triggering and unnecessary clamping changes. It can also output sufficient adjustment in time when the patient changes from a lying position to a sitting or standing position, thus taking into account both the stability required for fixation of the puncture site and the comfort and fit of the patient during the wearing process.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0030] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A drainage and care device for a neurosurgical ommaya sac, characterized in that, include: The puncture section is provided with a puncture tube (1) and a puncture needle (2) disposed on the puncture tube (1). The middle end includes a three-way connector (3), which is connected to the side of the puncture tubing (1) away from the puncture needle (2); The collection unit includes a collection hose (4), one end of which is connected to one of the ports of the three-way connector (3), and a collection bag (5) is provided on the side of the collection hose (4) away from the three-way connector (3). A fixation component is disposed on one side of the puncture site, and the fixation component is used to fix the puncture site; A follow-up adjustment component is disposed on the fixed component. The follow-up adjustment component is used to adjust the tension of the puncture position according to the patient's posture.

2. The drainage and care device for a neurosurgical ommaya sac according to claim 1, characterized in that, The fixing component includes a positioning plate (8) fixedly sleeved on the outer surface of the puncture tube (1). The positioning plate (8) is in the shape of a suction cup and is used to adhere to the periphery of the patient's puncture site during fixing. It is fixed with medical tape. A first fixing block (10) is provided on the side of the positioning plate (8) away from the puncture tube (1).

3. The drainage and nursing device for a neurosurgical ommaya sac according to claim 2, characterized in that, The follow-up adjustment assembly includes an airbag (9) fixedly installed inside the positioning plate (8) and a rotating block (12) rotatably installed on the first fixed block (10). The rotating block (12) is fan-shaped and a positioning ring (13) is provided on one side of the rotating block (12). The positioning ring (13) is movably sleeved on the outer surface of the puncture tube (1).

4. The drainage and care device for a neurosurgical ommaya sac according to claim 3, characterized in that, A lightweight slide rail (14) is provided on the side of the rotating block (12) away from the positioning ring (13). A plastic toothed plate (16) is slidably mounted on the lightweight slide rail (14). Limiting blocks (15) for limiting are provided at both ends of the lightweight slide rail (14). A second fixing block (17) is fixedly mounted on the side of the positioning plate (8) away from the airbag (9). A rotating rod (18) is rotatably mounted on the second fixing block (17). A first gear (19) is fixedly connected to one side of the rotating rod (18). The first gear (19) meshes with the plastic toothed plate (16). A second gear (20) is fixedly mounted on the other side of the rotating rod (18). A piston rod (21) is provided on one side of the airbag (9). A piston is provided on the side of the piston rod (21) close to the airbag (9). Several toothed grooves (22) are opened at the bottom of the piston rod (21). The toothed grooves (22) mesh with the second gear (20).

5. The drainage and care device for a neurosurgical ommaya sac according to claim 4, characterized in that, When the patient is standing or sitting, the rotating block (12) moves to one side with the center of gravity, and the plastic toothed plate (16) drives the first gear (19) to rotate, which in turn drives the second gear (20) to drive the piston rod (21) to move into the airbag (9) and inflate the airbag (9). When the patient is in a sleeping position, the rotating block (12) moves to the other side with the center of gravity, and the second gear (20) drives the piston rod (21) to move in the opposite direction, thus deflating the airbag (9).

6. The drainage and care device for a neurosurgical ommaya sac according to claim 5, characterized in that, The first fixed block (10) is provided with two triangular limiting corner blocks (11), which are used to limit the rotation stroke of the rotating block (12).

7. The drainage and care device for a neurosurgical ommaya sac according to claim 6, characterized in that, The length of the lightweight slide rail (14) is longer than the length of the plastic toothed plate (16). When the patient is moving, the offset of the rotating block (12) will first cause the plastic toothed plate (16) to slide slightly on the lightweight slide rail (14), but will not drive the first gear (19) to rotate.

8. The drainage and care device for a neurosurgical ommaya sac according to claim 3, characterized in that, The airbag (9) is made of a skin-friendly material.

9. The drainage and care device for a neurosurgical ommaya sac according to claim 1, characterized in that, A capped interface (7) is provided between the three-way connector (3) and the collecting hose (4) for connection.

10. The drainage and care device for a neurosurgical ommaya sac according to claim 1, characterized in that, A ruler (6) is provided on the top of the collection bag (5).

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