A neurosurgical intracranial drain holder
By designing a neurosurgical intracranial drainage fixator, the problem of easy displacement and slippage of the drainage tube was solved by utilizing the synergistic effect of flexible plates, fixation components, and buffer components. Stable fixation and double buffer protection were achieved, improving the safety and comfort of treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING PUREN HOSPITAL
- Filing Date
- 2026-05-22
- Publication Date
- 2026-07-14
AI Technical Summary
In existing technologies, the rigid fixation method for intracranial drainage tubes lacks a buffer structure, which makes the drainage tubes prone to displacement and slippage, affecting the treatment effect and potentially causing damage to intracranial tissues.
A neurosurgical intracranial drainage fixation device was designed, comprising a flexible plate, a fixation component, and a buffer component. Through the synergistic action of pulleys, buffer springs, and damping wheels, the drainage tube is stably fixed and double-buffered for protection.
It effectively prevents drainage tube displacement and slippage, reduces damage to intracranial tissues, improves treatment safety and comfort, and extends the service life of the drainage tube.
Smart Images
Figure CN122376883A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical assistive device technology, specifically to a neurosurgical intracranial drainage fixation device. Background Technology
[0002] In neurosurgical practice, intracranial drainage is a crucial treatment for related intracranial conditions. The drainage tube must be stably fixed to ensure effective drainage and patient safety. Currently, medical tape is primarily used for rigid fixation of intracranial drainage tubes. The main drawback of this method is the lack of a buffer structure, failing to provide flexible protection for the drainage tube. When the patient's head moves slightly or the drainage tube is pulled, the force is directly transmitted to the contact point between the tube and intracranial tissue, easily leading to tube displacement or slippage. This can affect the normal progress of drainage treatment, potentially causing damage to intracranial tissues, triggering related complications, and jeopardizing the patient's treatment safety and recovery process.
[0003] To address these issues, we designed a neurosurgical intracranial drainage fixator. Summary of the Invention
[0004] The purpose of this invention is to provide a neurosurgical intracranial drainage fixation device to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the present invention provides a neurosurgical intracranial drainage fixation device, including a flexible plate fixed to the human body and a drainage tube. The top surface of the flexible plate is provided with a fixing component for restricting the arbitrary displacement of the drainage tube. The top surface of the flexible plate is also fixedly installed with a limiting plate for supporting the drainage tube and a buffering component for buffering the external traction force on the drainage tube.
[0006] The buffer assembly includes a mounting box fixedly connected to the top surface of the flexible plate. A slide block is slidably mounted inside the mounting box along its length. A pulley is rotatably mounted on the slide block via a rotating shaft. The drainage tube is wound around the pulley, and when the pulley is in its initial position and cooperates with the limiting plate, the corresponding section of the drainage tube wound around the pulley is arranged in a V-shape. A slide rod is fixedly connected to the side wall of the slide block. A slide plate is fixedly connected to the end of the slide rod away from the slide block. A buffer spring is fixedly connected to the side wall of the slide plate away from the slide rod. The other end of the buffer spring away from the slide plate is fixedly connected to the inner wall of the corresponding side of the mounting box.
[0007] Furthermore, a damping wheel is rotatably installed inside the mounting box. The damping wheel cooperates with the slide rod to generate a damping force when the pulley is reset by the force of the buffer spring, thereby slowing down the reset speed of the pulley and preventing the reset impact force from being transmitted to the drainage tube.
[0008] Furthermore, the damping wheel includes an axle rotatably mounted inside the mounting box. An inner magnetic cylinder is fixedly sleeved on the outer wall of the axle, and an outer magnetic cylinder is sleeved on the outside of the inner magnetic cylinder. The inner and outer magnetic cylinders are magnetically attracted to each other. The outer magnetic cylinder is fixed to the inner wall of the mounting box. A gear is rotatably connected to the top of the axle. The slide rod is provided with a tooth groove that meshes with the gear. A ratchet is connected to the inner ring of the gear. A pawl that cooperates with the ratchet is provided on the outer wall of the axle.
[0009] Furthermore, the fixing component includes a fixing ring fixed to the flexible plate, a rotating ring rotatably connected to the outside of the fixing ring, and multiple binding ropes arranged in a circumferential array on the rotating ring. The end of each binding rope away from the rotating ring is fixed to the inner wall of the fixing ring. The fixing ring is also provided with a locking element for locking the rotation of the rotating ring.
[0010] Furthermore, the locking member includes a movable rod disposed on the fixed ring, the movable rod being able to slide radially along the fixed ring, the movable rod being provided with a locking block, and a plurality of locking grooves for the locking block to be engaged are formed on the inner wall of the rotating ring, the plurality of locking grooves being equidistantly distributed along the circumferential direction of the inner wall of the rotating ring.
[0011] Furthermore, a push spring is connected to one side of the movable rod, and the other end of the push spring is fixed to the outer wall of the fixed ring. Under the initial elastic force of the push spring, the movable rod is pushed away from the fixed ring so that the locking block is engaged in the interior of the locking groove.
[0012] Furthermore, the flexible plate is provided with a circular hole for the drainage tube to pass through, and both the fixed ring and the rotating ring are coaxially arranged with the circular hole.
[0013] Furthermore, a dressing is fixedly connected to the bottom surface of the flexible plate, and the flexible plate is attached to the patient's scalp through the dressing.
[0014] Compared with existing technologies, the advantages of this invention are: it solves the core defects of existing rigid adhesive tape fixation, achieving stable fixation and double buffering protection of the drainage tube, and significantly improving the safety of drainage treatment. Through the cooperation of the fixing ring, rotating ring, binding rope, and locking device in the fixation assembly, the drainage tube can be securely and adjustablely bound and fixed, avoiding the problems of drainage tube displacement and slippage caused by the easy curling and detachment of traditional adhesive tape; simultaneously, the buffer spring and damping wheel in the buffer assembly work together to form double buffering, effectively counteracting the external traction force on the drainage tube, reducing the repositioning impact force, preventing the transmission of traction force or repositioning impact to the intracranial cavity, preventing drainage tube displacement and intracranial tissue damage, and ensuring the normal progress of drainage treatment.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The flexible plate adheres to the patient's head through the dressing on the bottom surface. The dressing is skin-friendly and breathable, which can avoid problems such as scalp redness, damage, and allergies caused by the rigid pressure of traditional adhesive tape. Moreover, the flexible plate can adapt to the head contour, improving wearing comfort. In the fixing component, the push spring drives the locking block and the locking slot to realize the automatic locking of the rotating ring. The operation is simple, and medical staff can quickly adjust the tightness of the binding rope to adapt to drainage tubes of different diameters. There is no need to frequently replace the fixing components, reducing the workload of medical staff. At the same time, the fixing ring, the rotating ring and the circular hole of the flexible plate are coaxially set, which can avoid the drainage tube being squeezed and worn, and extend its service life. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0017] Figure 2 This is a top view of the structure of the present invention;
[0018] Figure 3 For along Figure 2 A schematic diagram of the cross-sectional structure along the center section AA;
[0019] Figure 4 This is a partial structural diagram of the fixing component in this invention;
[0020] Figure 5 This is a schematic diagram of the buffer component in this invention;
[0021] Figure 6 This is a side view of the buffer component in this invention.
[0022] Figure 7 For along Figure 6 A schematic diagram of the cross-sectional structure along the center section BB;
[0023] Figure 8 This is a schematic diagram of the damping wheel in this invention.
[0024] In the diagram: 1. Flexible plate; 2. Dressing patch; 3. Drainage tube; 4. Fixing assembly; 41. Fixing ring; 42. Rotating ring; 43. Binding rope; 44. Movable rod; 45. Push spring; 46. Slot; 47. Locking block; 5. Limiting plate; 6. Buffer assembly; 61. Mounting box; 62. Slide; 63. Rotating shaft; 64. Pulley; 65. Slide rod; 66. Slide plate; 67. Buffer spring; 68. Damping wheel; 681. Axle; 682. Inner magnetic cylinder; 683. Outer magnetic cylinder; 684. Gear; 685. Ratchet; 686. Pawl. Detailed Implementation
[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] Please see Figure 1-8 The present invention provides a technical solution: a neurosurgical intracranial drainage fixation device, including a flexible plate 1 fixed to the human body and a drainage tube 3. The top surface of the flexible plate 1 is provided with a fixation component 4 for restricting the random displacement of the drainage tube 3. The top surface of the flexible plate 1 is also fixedly installed with a limiting plate 5 for supporting the drainage tube 3, and a buffer component 6 for buffering the external traction force on the drainage tube 3.
[0027] The buffer assembly 6 includes a mounting box 61 fixedly connected to the top surface of the flexible plate 1. A slide block 62 is slidably mounted inside the mounting box 61 along its length. A pulley 64 is rotatably mounted on the slide block 62 via a rotating shaft 63. A drainage tube 3 is wound around the pulley 64. When the pulley 64 is in its initial position and cooperates with the limiting plate 5, the corresponding section of the drainage tube 3 wound around the pulley 64 is arranged in a V-shape. A slide rod 65 is fixedly connected to the side wall of the slide block 62. A slide plate 66 is fixedly connected to the end of the slide rod 65 away from the slide block 62. A buffer spring 67 is fixedly connected to the side wall of the slide plate 66 away from the slide rod 65. The other end of the buffer spring 67 away from the slide plate 66 is fixedly connected to the inner wall of the corresponding side of the mounting box 61.
[0028] In practical implementation, the flexible plate 1 serves as the supporting foundation of the device. The bottom surface of the flexible plate 1 is fitted to the human head, and the drainage tube 3 is used for intracranial fluid drainage. The fixing component 4 on the top surface of the flexible plate 1 limits the drainage tube 3 to prevent it from shifting arbitrarily. The limiting plate 5 provides support for the drainage tube 3 and works with the buffer component 6 to achieve traction buffering. In the buffer component 6, the mounting box 61 is fixed to the top surface of the flexible plate 1, the slide 62 can slide along the length of the mounting box 61, and the pulley 64 is rotatably mounted on the slide 62 via the rotating shaft 63. The drainage tube 3 is wound around the pulley 64. In the initial state, the pulley 64 cooperates with the limiting plate 5 to make the corresponding section of the drainage tube 3 V-shaped, reserving buffer space. When the drainage tube 3 is pulled by the outside, it will drive the pulley 64 and the slide 62. 2. Synchronous sliding: The slide bar 65 moves with the slide seat 62 and pushes the slide plate 66 to compress the buffer spring 67. The buffer spring 67 undergoes elastic deformation, converting the traction force into elastic potential energy, thus achieving traction buffering. When the traction force disappears, the buffer spring 67 releases the elastic potential energy, causing all components to reset. Addressing the core defect of existing rigid tape fixation lacking buffering, the fixing component 4 achieves stable positioning of the drainage tube 3, and the buffer spring 67 of the buffer component 6 counteracts the traction force, preventing the traction force from being directly transmitted to the intracranial cavity, fundamentally solving the problem of displacement and slippage of the drainage tube 3. The flexible plate 1 can adapt to the head contour, improving wearing comfort compared to tape fixation, avoiding rigid pressure on the scalp, and ensuring the normal progress of drainage treatment.
[0029] As a technical optimization of the present invention, a damping wheel 68 is also rotatably installed inside the mounting box 61. The damping wheel 68 cooperates with the slide rod 65 to generate a damping force when the pulley 64 is reset by the force of the buffer spring 67, thereby slowing down the reset speed of the pulley 64 and preventing the reset impact force from being transmitted to the drainage tube 3.
[0030] In specific implementation, a damping wheel 68 structure is added to the buffer assembly 6. Its working principle is as follows: the damping wheel 68 is rotatably installed inside the mounting box 61 and cooperates with the slide rod 65. When the pulling force disappears and the buffer spring 67 drives the components to reset, the slide rod 65 triggers the damping wheel 68 to generate a damping force during its movement. This damping force can hinder the rapid movement of the slide rod 65, thereby slowing down the reset speed of the pulley 64 and avoiding the impact force generated during reset. This compensates for the insufficient buffering of the single buffer spring 67. Through the cooperation of the damping wheel 68 and the slide rod 65, double buffering is achieved, preventing the pulley 64 from resetting too quickly and generating an impact force, preventing the impact force from being transmitted to the drainage tube 3, further protecting the drainage tube 3, and preventing it from shifting or damaging intracranial tissue due to the reset impact, thereby improving the safety and stability of the device.
[0031] As a technical optimization of the present invention, the damping wheel 68 includes a wheel axle 681 rotatably mounted inside the mounting box 61. An inner magnetic cylinder 682 is fixedly sleeved on the outer wall of the wheel axle 681, and an outer magnetic cylinder 683 is sleeved on the outside of the inner magnetic cylinder 682. The inner magnetic cylinder 682 and the outer magnetic cylinder 683 are magnetically attracted to each other. The outer magnetic cylinder 683 is fixed to the inner wall of the mounting box 61. A gear 684 is rotatably connected to the top of the wheel axle 681. A tooth groove that meshes with the gear 684 is provided on the slide rod 65. A ratchet 685 is connected to the inner ring of the gear 684. A pawl 686 that cooperates with the ratchet 685 is provided on the outer wall of the wheel axle 681.
[0032] In specific implementation, the specific structure and working principle of the damping wheel 68 were clarified. The damping wheel 68 consists of a wheel axle 681, an inner magnetic cylinder 682, an outer magnetic cylinder 683, a gear 684, a ratchet 685, and a pawl 686. The wheel axle 681 is rotatably mounted inside the mounting box 61. The inner magnetic cylinder 682 is fixedly sleeved on the outer wall of the wheel axle 681. The outer magnetic cylinder 683 is sleeved on the outside of the inner magnetic cylinder 682 and fixed to the inner wall of the mounting box 61. The two are magnetically attracted to each other. The gear 684 is rotatably connected to the top of the wheel axle 681 and meshes with the tooth groove on the slide rod 65. In this configuration, ratchet 685 is connected to the inner ring of gear 684, and pawl 686 is located on the outer wall of axle 681 and engages with ratchet 685. When slide bar 65 moves, it drives gear 684 to rotate through tooth grooves, and gear 684 drives ratchet 685 to rotate. Pawl 686 and ratchet 685 engage to drive axle 681 to rotate synchronously. Inner magnetic cylinder 682 rotates inside outer magnetic cylinder 683. The magnetic force between the two generates damping. At the same time, ratchet 685 and pawl 686 restrict axle 681 from rotating in the opposite direction, ensuring stable damping. Its beneficial effects are as follows: Addressing the shortcomings of unstable buffer structures and uncontrollable buffering effects in the background technology, the magnetic damping effect of the inner magnetic cylinder 682 and the outer magnetic cylinder 683 achieves a stable and adjustable damping effect. Compared with traditional damping structures, magnetic damping has no mechanical wear, a longer service life, and more stable damping force. The meshing of gear 684 and slide bar 65 ensures precise linkage between the damping wheel 68 and slide bar 65, preventing buffer failure. The cooperation between ratchet 685 and pawl 686 restricts the reverse rotation of the wheel axle 681, ensuring the continuous and effective damping effect during reset, further improving the stability and reliability of the device's buffering and ensuring the safety of the drainage tube 3.
[0033] As a technical optimization of the present invention, the fixing component 4 includes a fixing ring 41 fixed on the flexible plate 1, a rotating ring 42 rotatably connected to the outside of the fixing ring 41, and multiple binding ropes 43 arranged in a circumferential array on the rotating ring 42. The end of each binding rope 43 away from the rotating ring 42 is fixed to the inner wall of the fixing ring 41. The fixing ring 41 is also provided with a locking member for locking the rotation of the rotating ring 42.
[0034] In specific implementation, the specific structure and working principle of the fixing component 4 were clarified. The fixing component 4 includes a fixing ring 41, a rotating ring 42, binding ropes 43, and a locking component. The fixing ring 41 is fixed to the flexible plate 1, and the rotating ring 42 is rotatably connected to the outside of the fixing ring 41. Multiple binding ropes 43 are arranged in a circumferential array, with one end connected to the rotating ring 42 and the other end fixed to the inner wall of the fixing ring 41. When the rotating ring 42 is rotated, the binding ropes 43 can be tightened to bind and fix the drainage tube 3 passing through the fixing ring 41. The locking component is used to lock the rotation of the rotating ring 42 to prevent it from loosening accidentally. In view of the defects of existing tapes, such as poor fixing firmness, easy curling and falling off, and the need for frequent replacement, the fixing ring 41, rotating ring 42, and binding ropes 43 are used to achieve a firm binding and fixation of the drainage tube 3. The fixing effect is more stable and less prone to loosening. Frequent replacement is not required, which reduces the workload of medical staff and avoids the risk of displacement caused by the tape curling or falling off and pulling the drainage tube 3.
[0035] As a technical optimization of the present invention, the locking member includes a movable rod 44 disposed on the fixed ring 41. The movable rod 44 can slide radially along the fixed ring 41. A locking block 47 is disposed on the movable rod 44. A plurality of locking grooves 46 for the locking block 47 to be inserted are opened on the inner wall of the rotating ring 42. The plurality of locking grooves 46 are equidistantly distributed along the inner wall of the rotating ring 42.
[0036] In specific implementation, the locking component includes a movable rod 44 mounted on the fixed ring 41. The movable rod 44 can slide radially along the fixed ring 41. A locking block 47 is mounted on the movable rod 44. Several slots 46 for the locking block 47 to engage are formed on the inner wall of the rotating ring 42. The slots 46 are evenly distributed circumferentially along the inner wall of the rotating ring 42. When it is necessary to lock the rotating ring 42, the movable rod 44 slides radially inward along the fixed ring 41, causing the locking block 47 to engage in the corresponding slot 46, thereby locking the rotating ring 42. When it is necessary to adjust the position of the drainage tube 3, Pulling the movable rod 44 radially outward along the fixed ring 41 causes the locking block 47 to disengage from the slot 46, thus releasing the lock on the rotating ring 42. Rotating the rotating ring 42 adjusts the tightness of the binding rope 43. This clarifies the specific structure of the locking component, enabling the rotating ring 42 to be locked and unlocked. This prevents accidental rotation of the rotating ring 42 from causing the binding rope 43 to loosen, ensuring the stability of the drainage tube 3. At the same time, the operation is simple, allowing medical staff to quickly adjust the tightness of the binding rope 43 to adapt to drainage tubes 3 of different diameters, improving the versatility and ease of operation of the device.
[0037] As a technical optimization of the present invention, a push spring 45 is connected to one side of the movable rod 44, and the other end of the push spring 45 is fixed to the outer wall of the fixed ring 41. Under the initial elastic force of the push spring 45, the movable rod 44 is pushed away from the fixed ring 41 so that the locking block 47 is locked into the inside of the locking groove 46.
[0038] In specific implementation, the cooperation relationship and working principle of the movable rod 44 and the push spring 45 were clarified. One side of the movable rod 44 is connected to the push spring 45, and the other end of the push spring 45 is fixed to the outer wall of the fixed ring 41. Under the initial elastic force of the push spring 45, the movable rod 44 will slide inward to the inside of the fixed ring 41, thereby driving the locking block 47 to be locked into the slot 46, realizing the automatic locking of the rotating ring 42. There is no need to manually lock the rotating ring 42. The initial elastic force of the push spring 45 can realize the automatic locking of the rotating ring 42, further improving the convenience of operation. At the same time, it avoids the loosening of the binding rope 43 due to medical staff forgetting to lock the rotating ring 42, ensuring the stability of the drainage tube 3 and reducing the risk of operational errors.
[0039] As a technical optimization of the present invention, the flexible plate 1 is provided with a circular hole for the drainage tube 3 to pass through, and the fixing ring 41 and the rotating ring 42 are both coaxially arranged with the circular hole.
[0040] In specific implementation, the fixed ring 41, rotating ring 42, and flexible plate 1 are designed to cooperate. The flexible plate 1 has a circular hole through which the drainage tube 3 passes. The fixed ring 41 and rotating ring 42 are both coaxially aligned with this circular hole. After the drainage tube 3 passes through the circular hole on the flexible plate 1, it then passes through the center of the fixed ring 41 and rotating ring 42. This ensures that the drainage tube 3 is subjected to uniform force, preventing the drainage tube 3 from being squeezed or worn due to the fixed ring 41 and rotating ring 42 not being coaxial with the circular hole, or from shifting due to uneven force during fixation. This ensures that the drainage tube 3 is subjected to uniform force, preventing damage to the drainage tube 3 due to squeezing or wear. At the same time, it ensures that the binding force of the binding rope 43 on the drainage tube 3 is uniform, further improving the fixation stability and extending the service life of the drainage tube 3.
[0041] As a technical optimization of the present invention, a dressing patch 2 is fixedly connected to the bottom surface of the flexible plate 1, and the flexible plate 1 is attached to the patient's head skin through the dressing patch 2.
[0042] In practice, the flexible plate 1 is attached to the patient's head by a dressing 2 fixedly connected to its bottom surface. The flexible plate 1 is then adhered to the patient's scalp via the dressing 2. Its working principle is as follows: the adhesive properties of the dressing 2 securely adhere the flexible plate 1 to the patient's head. Simultaneously, the dressing 2 is skin-friendly and breathable, reducing irritation to the scalp. Its beneficial effects are: addressing the shortcomings of existing adhesive tapes that easily damage the scalp, the skin-friendly and breathable dressing 2 avoids problems such as scalp redness, breakage, and allergies caused by long-term application, improving patient comfort; furthermore, compared to traditional adhesive tapes, the dressing 2 has more stable adhesion and is less prone to falling off due to scalp secretions and sweat, ensuring the stability of the flexible plate 1 and the entire device, further guaranteeing the fixation effect of the drainage tube 3.
[0043] Working principle: The core purpose of this neurosurgical intracranial drainage fixation device is to solve the problem that existing rigid adhesive tape fixation of the drainage tube 3 lacks cushioning and is prone to displacement and slippage. Through the coordinated operation of various components, it achieves stable fixation and effective cushioning of the drainage tube 3, ensuring the safety of intracranial drainage treatment. Its overall working principle combined with the details of each structure is as follows:
[0044] First, the device achieves a stable fit with the human head through a flexible plate 1. A dressing 2 is fixedly connected to the bottom surface of the flexible plate 1. Utilizing the adhesive properties of the dressing 2, the flexible plate 1 is firmly attached to the patient's scalp. At the same time, the flexibility of the flexible plate 1 itself can adapt to the contours of the head, improving wearing comfort and avoiding hard pressure on the scalp. The flexible plate 1 is provided with a circular hole for the drainage tube 3 to pass through. After the drainage tube 3 passes through the circular hole, it is limited and fixed by the fixing component 4 on the top surface of the flexible plate 1 to prevent the drainage tube 3 from shifting arbitrarily.
[0045] The fixing process of the fixing component 4 is as follows: The fixing component 4 includes a fixing ring 41 fixed on the flexible plate 1. The fixing ring 41 is coaxially arranged with the circular hole on the flexible plate 1, and the drainage tube 3 passes through the inside of the fixing ring 41. A rotating ring 42 is rotatably connected to the outside of the fixing ring 41. The rotating ring 42 is provided with multiple binding ropes 43 arranged in a circumferential array. The end of each binding rope 43 away from the rotating ring 42 is fixed to the inner wall of the fixing ring 41. When the rotating ring 42 is rotated, the binding ropes 43 can be tightened, thereby firmly binding and fixing the drainage tube 3 passing through the fixing ring 41. To prevent the binding from loosening due to accidental rotation of the rotating ring 42, a locking element is provided on the fixing ring 41.
[0046] When the locking mechanism is in operation, it includes a movable rod 44 mounted on a fixed ring 41. The movable rod 44 can slide radially along the fixed ring 41. A locking block 47 is mounted on the movable rod 44. Several slots 46 are evenly distributed circumferentially on the inner wall of the rotating ring 42. A push spring 45 is connected to one side of the movable rod 44. The other end of the push spring 45 is fixed to the outer wall of the fixed ring 41. Under the initial elastic force of the push spring 45, the movable rod 44 will be pushed to move inward toward the fixed ring 41, so that the locking block 47 is engaged in the slot 46, thereby locking the rotation of the rotating ring 42 and ensuring the stability of the binding rope 43 for the drainage tube 3. When it is necessary to adjust the position of the drainage tube 3, the movable rod 44 is pulled outward to compress the push spring 45, so that the locking block 47 is disengaged from the slot 46, and the rotating ring 42 can be rotated to loosen the binding rope 43.
[0047] A limiting plate 5 and a buffer assembly 6 are also fixedly installed on the top surface of the flexible plate 1. The limiting plate 5 is used to support the drainage tube 3 and works with the buffer assembly 6 to achieve buffer protection for the drainage tube 3. The buffer assembly 6 includes a mounting box 61 fixedly connected to the top surface of the flexible plate 1. A slide block 62 is slidably installed inside the mounting box 61 along its length. A pulley 64 is rotatably installed on the slide block 62 via a rotating shaft 63. The drainage tube 3 is wound around the pulley 64. When the pulley 64 is in the initial position and cooperates with the limiting plate 5, the corresponding section of the drainage tube 3 wound around the pulley 64 is arranged in a V-shape. This V-shaped structure provides room for the pull and buffer of the drainage tube 3.
[0048] When the drainage tube 3 is subjected to an external pulling force, the pulling force will act on the pulley 64, causing the slide 62 to slide along the length of the mounting box 61. The slide rod 65, which is fixedly connected to the side wall of the slide 62, will move synchronously with the slide 62, thereby pushing the slide plate 66 at the end of the slide rod 65 to squeeze the buffer spring 67. The other end of the buffer spring 67 is fixed to the inner wall of the mounting box 61. At this time, the buffer spring 67 undergoes elastic deformation, converting the pulling force on the drainage tube 3 into the elastic potential energy of the spring, achieving the first layer of buffering, avoiding the pulling force from being directly transmitted to the contact area between the drainage tube 3 and the intracranial tissue, and preventing the drainage tube 3 from shifting or slipping.
[0049] Once the pulling force disappears, the buffer spring 67 releases its elastic potential energy, pushing the slide plate 66, slide rod 65, and slide block 62 back to their original positions, which in turn drives the pulley 64 back to its initial position. To prevent the pulley 64 from resetting too quickly and generating an impact force that is transmitted to the drainage tube 3, a damping wheel 68 is also rotatably installed inside the mounting box 61. The damping wheel 68 cooperates with the slide rod 65 to generate a damping force during the resetting process of the pulley 64, slowing down the resetting speed and achieving a second layer of buffering to further protect the drainage tube 3.
[0050] The specific buffering principle of the damping wheel 68 is as follows: The damping wheel 68 includes a wheel axle 681 rotatably installed inside the mounting box 61. An inner magnetic cylinder 682 is fixedly sleeved on the outer wall of the wheel axle 681. An outer magnetic cylinder 683, which is fixed to the inner wall of the mounting box 61, is sleeved on the outside of the inner magnetic cylinder 682. The inner magnetic cylinder 682 and the outer magnetic cylinder 683 are magnetically attracted. A gear 684 is rotatably connected to the top of the wheel axle 681. A tooth groove that meshes with the gear 684 is provided on the slide rod 65. A ratchet 685 is connected to the inner ring of the gear 684. A pawl 686 that cooperates with the ratchet 685 is provided on the outer wall of the wheel axle 681. When the slide bar 65 moves with the slide block 62, it drives the gear 684 to rotate through the tooth groove. The gear 684 drives the ratchet 685 to rotate. The pawl 686 cooperates with the ratchet 685 to make the wheel axle 681 rotate synchronously. This, in turn, drives the inner magnetic cylinder 682 to rotate inside the outer magnetic cylinder 683. The magnetic force between the inner magnetic cylinder 682 and the outer magnetic cylinder 683 generates damping, which hinders the rotation of the wheel axle 681, thereby slowing down the moving speed of the slide bar 65 and achieving damping buffering during reset. At the same time, the cooperation between the ratchet 685 and the pawl 686 can limit the reverse rotation of the wheel axle 681, ensuring that the damping effect is stably exerted.
[0051] In summary, the entire device achieves stable adhesion of the flexible plate 1 through the dressing patch 2, secure fixation of the drainage tube 3 through the fixing component 4, support of the drainage tube 3 through the limiting plate 5, and double buffering through the buffer spring 67 and damping wheel 68 of the buffer component 6, effectively counteracting the traction force on the drainage tube 3, preventing the drainage tube 3 from shifting or slipping, solving the defects of the existing fixation method, and ensuring the safe and stable conduct of intracranial drainage treatment.
Claims
1. A neurosurgical intracranial drainage fixation device, comprising a flexible plate (1) fixed to the human body and a drainage tube (3), characterized in that, The top surface of the flexible plate (1) is provided with a fixing component (4) for restricting the random displacement of the drainage tube (3); the top surface of the flexible plate (1) is also fixedly installed with a limiting plate (5) for supporting the drainage tube (3) and a buffer component (6) for buffering the external pulling force on the drainage tube (3). The buffer assembly (6) includes a mounting box (61) fixedly connected to the top surface of the flexible plate (1). A slide block (62) is slidably mounted inside the mounting box (61) along its length. A pulley (64) is rotatably mounted on the slide block (62) via a rotating shaft (63). The drainage tube (3) is wound around the pulley (64). When the pulley (64) is in the initial position and cooperates with the limiting plate (5), the corresponding section of the drainage tube (3) wound around the pulley (64) is arranged in a V-shape. A slide rod (65) is fixedly connected to the side wall of the slide block (62). A slide plate (66) is fixedly connected to one end of the slide rod (65) away from the slide block (62). A buffer spring (67) is fixedly connected to the side wall of the slide plate (66) away from the slide rod (65). The other end of the buffer spring (67) away from the slide plate (66) is fixedly connected to the inner wall of the mounting box (61) on the corresponding side.
2. The neurosurgical intracranial drainage fixation device as described in claim 1, characterized in that: The mounting box (61) is also rotatably mounted with a damping wheel (68). The damping wheel (68) cooperates with the slide bar (65) to generate a damping force when the pulley (64) is reset by the force of the buffer spring (67), thereby slowing down the reset speed of the pulley (64) and preventing the reset impact force from being transmitted to the drainage tube (3).
3. The neurosurgical intracranial drainage fixation device as described in claim 2, characterized in that: The damping wheel (68) includes a wheel axle (681) rotatably mounted inside the mounting box (61). An inner magnetic cylinder (682) is fixedly sleeved on the outer wall of the wheel axle (681). An outer magnetic cylinder (683) is sleeved on the outside of the inner magnetic cylinder (682). The inner magnetic cylinder (682) and the outer magnetic cylinder (683) are magnetically attracted. The outer magnetic cylinder (683) is fixed to the inner wall of the mounting box (61). A gear (684) is rotatably connected to the top of the wheel axle (681). A tooth groove that meshes with the gear (684) is provided on the slide rod (65). A ratchet (685) is connected to the inner ring of the gear (684). A pawl (686) that cooperates with the ratchet (685) is provided on the outer wall of the wheel axle (681).
4. The neurosurgical intracranial drainage fixation device as described in claim 1, characterized in that: The fixing component (4) includes a fixing ring (41) fixed on the flexible plate (1). A rotating ring (42) is rotatably connected to the outside of the fixing ring (41). Multiple binding ropes (43) are provided on the rotating ring (42). The multiple binding ropes (43) are arranged in a circumferential array. The end of each binding rope (43) away from the rotating ring (42) is fixed to the inner wall of the fixing ring (41). The fixing ring (41) is also provided with a locking element for locking the rotation of the rotating ring (42).
5. A neurosurgical intracranial drainage fixation device as described in claim 4, characterized in that: The locking component includes a movable rod (44) disposed on the fixed ring (41). The movable rod (44) is capable of sliding radially along the fixed ring (41). A locking block (47) is disposed on the movable rod (44). A plurality of locking grooves (46) for the locking block (47) to be engaged are opened on the inner wall of the rotating ring (42). The plurality of locking grooves (46) are equidistantly distributed along the inner wall of the rotating ring (42).
6. The neurosurgical intracranial drainage fixation device as described in claim 5, characterized in that: One side of the movable rod (44) is connected to a push spring (45), and the other end of the push spring (45) is fixed to the outer wall of the fixed ring (41). Under the initial elastic force of the push spring (45), the movable rod (44) is pushed away from the fixed ring (41) so that the locking block (47) is locked into the inside of the locking groove (46).
7. A neurosurgical intracranial drainage fixation device as described in claim 4, characterized in that: The flexible plate (1) is provided with a circular hole for the drainage tube (3) to pass through, and the fixed ring (41) and the rotating ring (42) are both coaxially arranged with the circular hole.
8. The neurosurgical intracranial drainage fixation device as described in claim 1, characterized in that: A dressing patch (2) is fixedly connected to the bottom surface of the flexible plate (1), and the flexible plate (1) is attached to the patient's head skin through the dressing patch (2).