Anti-falling ICU drainage device

Abstract

The invention discloses an anti-falling ICU drainage device. The anti-falling ICU drainage device comprises a joint sealing assembly; the joint sealing assembly comprises a first sealing sleeve, a second sealing sleeve and a rotary connecting mechanism; the first sealing sleeve and the second sealing sleeve are connected to the disconnected end of the drainage tube in an intersection manner and are matched with each other; the rotary connecting mechanism is arranged on the first sealing sleeve, and the rotary connecting mechanism is movably connected with the second sealing sleeve in a sealed and sleeved mode so that the first sealing sleeve and the second sealing sleeve can rotate relatively. The invention aims to provide the anti-falling ICU drainage device. The device effectively prevents the problem that the drainage tube falls off due to the change of the body position of a patient.

Description

Technical Field

[0001] The present invention relates to the technical field of ICU critical care medicine, and in particular to an anti-falling ICU drainage device. Background Art

[0002] With the advancement of critical care technology, ICU patients often need to adjust their position frequently during treatment, which places higher demands on the connection stability of drainage devices. Traditional drainage devices often use fixed connection structures, which can easily cause the drainage tube to twist or fall off when the patient's position changes, not only affecting the treatment effect but also potentially causing secondary medical risks. Especially for critically ill patients who are bedridden for a long time, existing drainage devices are unable to adapt to the angle adjustment required when the patient's position changes, increasing the difficulty of clinical care.

[0003] The steering mechanism of existing drainage devices has obvious defects, mainly manifested in the dual problems of insufficient steering flexibility and poor connection stability. Traditional steering structures are either too rigid, causing the drainage tube to fall off due to force, or too loose to maintain stable drainage. In clinical practice, this design defect often leads to poor drainage or accidental detachment of the drainage tube, seriously affecting the treatment effect. Therefore, there is an urgent need to develop an ICU drainage device with a steering function to effectively prevent the problem of drainage tube falling off due to changes in patient position. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an anti-falling ICU drainage device, which effectively prevents the drainage tube from falling off due to changes in the patient's body position.

[0005] The purpose of the present invention is achieved by adopting the following technical solutions:

[0006] An anti-falling ICU drainage device comprises: a joint sealing assembly, the joint sealing assembly comprising a first sealing sleeve, a second sealing sleeve and a rotating connection mechanism; the first sealing sleeve and the second sealing sleeve are connected to the disconnected end of the drainage tube at an intersection and cooperate with each other; the rotating connection mechanism is provided on the first sealing sleeve, and the rotating connection mechanism is movably and sealingly connected to the second sealing sleeve to enable the first sealing sleeve and the second sealing sleeve to rotate relative to each other.

[0007] Furthermore, the rotary connection mechanism comprises a plurality of rotating parts distributed along the circumference of the first sealing sleeve, and the plurality of rotating parts are arranged on the matching surface between the first sealing sleeve and the second sealing sleeve.

[0008] Furthermore, the rotating member is a spherical ball.

[0009] Furthermore, the rotating connection mechanism also includes an annular limit groove, which is arranged on the first sealing sleeve and forms an accommodating space for accommodating multiple spherical balls; the depth of the annular limit groove is greater than the radius of the spherical ball, and the depth of the annular limit groove is less than the diameter of the spherical ball.

[0010] Furthermore, the outer wall of the second sealing sleeve is provided with a rotation fitting section and a flow rate adjustment section, which defines the extension direction of the second sealing sleeve and the direction away from the first sealing sleeve as the first direction, and the rotation fitting section and the flow rate adjustment section are arranged in sequence along the first direction; the rotation fitting section is provided with a first annular limiting groove that cooperates with the spherical ball, and the first annular limiting groove allows multiple spherical balls to roll in the first annular limiting groove; the flow rate adjustment section is provided with a plurality of bosses arranged in sequence along the first direction, and the cross-sectional outer contour area of ​​each boss increases along the first direction, and the top of each boss is provided with a second annular limiting groove that is adapted to the spherical ball, and the second annular limiting groove allows multiple spherical balls to roll in the second annular limiting groove.

[0011] Furthermore, each boss is provided with a guide slope structure at one end close to the rotational engagement section, and the guide slope structure is used to guide the spherical ball to roll in the first direction.

[0012] Furthermore, the rotating connection mechanism is arranged on the inner wall of the first sealing sleeve; the inner wall of the first sealing sleeve is provided with a first sealing structure; the outer wall of the second sealing sleeve is correspondingly provided with a second sealing structure; when the rotating member cooperates with the first annular limiting groove, the first sealing structure and the second sealing structure abut against each other to form abutment; the second sealing structure, the abutment, the first sealing structure and the rotating member are arranged in sequence along the first direction.

[0013] Furthermore, the first sealing structure is provided with a first guiding inclined surface at the other end relative to the abutting point; and the second sealing structure is provided with a second guiding inclined surface at the other end relative to the abutting point.

[0014] Furthermore, the spherical ball is made of magnetic material; and an annular magnetic element is embedded in the outer wall of the second sealing sleeve at a position corresponding to the rotation fitting section.

[0015] Furthermore, a lubricant accommodating space is provided between the mating surfaces of the rotary connection mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. Structural Design of the Rotary Connection Mechanism: A rotary connection mechanism, comprising a spherical ball bearing, an annular retaining groove, and a first annular retaining groove, is provided between the first and second sealing sleeves, enabling relative rotation while maintaining a sealed connection. The spherical ball bearing rolls within the annular retaining groove, cooperating with the first annular retaining groove to ensure the drainage tube remains flexible even when the patient's position changes, preventing it from falling out due to pulling or twisting.

[0018] 2. Optimized design of the flow rate adjustment section: The flow rate adjustment section of the second sealing sleeve is equipped with multiple bosses, each with a second annular limiting groove on top, which cooperates with the spherical ball to achieve multi-speed flow rate adjustment. The guide bevel structure guides the spherical ball to roll along the first direction, making the spherical ball smoother when switching between different grooves, achieving precise control of the flow rate. In addition, the spherical ball has the dual functions of rotational connection and flow rate adjustment, simplifying the structural design, improving the integration of the device, and ensuring that the drainage speed of ICU patients can be flexibly adjusted according to clinical needs during treatment.

[0019] 3. Dynamic coordination and auxiliary optimization of the sealing structure: The first sealing sleeve and the second sealing sleeve form a dynamic seal at the abutment between the first sealing structure and the second sealing structure, and cooperate with the guiding effect of the first guide bevel and the second guide bevel to ensure a tight fit during the rotation process to prevent liquid leakage. The design of the lubricant accommodating space effectively reduces friction and extends the service life; at the same time, the use of magnetic spherical balls and annular magnetic elements enhances the stability of the rotating connection mechanism to avoid accidental loosening. This design not only ensures sealing but also takes into account flexibility and durability, and is suitable for long-term drainage needs in the complex environment of the ICU. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an anti-falling ICU drainage device of the present invention;

[0021] Figure 2 for Figure 1 A partial enlarged view of point A in a cross-sectional state;

[0022] Figure 3 for Figure 2 A local enlarged view of point B.

[0023] In the figure: 1. Joint sealing assembly; 2. First sealing sleeve; 3. Second sealing sleeve; 4. Rotary connection mechanism; 411. Spherical ball; 412. Annular limit groove; 5. Flow rate adjustment section; 511. First annular limit groove; 512. Boss; 513. Second annular limit groove; 514. Guide slope structure; 6. First sealing structure; 7. Second sealing structure; 8. Abutment; 9. First guide slope; 10. Second guide slope; 11. Annular magnetic element; 12. Lubricant containing space; 13. Fixing device; 14. One-way valve; 15. Negative pressure device. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element, or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element, or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] See also Figure 1 、 Figure 2 and Figure 3 , shows a specific implementation of a preferred embodiment of the present invention:

[0028] An anti-falling ICU drainage device comprises: a joint sealing assembly 1, wherein the joint sealing assembly 1 comprises a first sealing sleeve 2, a second sealing sleeve 3 and a rotating connection mechanism 4; the first sealing sleeve 2 and the second sealing sleeve 3 are connected to the disconnected end of the drainage tube at an intersection and cooperate with each other; the rotating connection mechanism 4 is provided on the first sealing sleeve 2, and the rotating connection mechanism 4 and the second sealing sleeve 3 are movably sealed and sleeved so that the first sealing sleeve 2 and the second sealing sleeve 3 can rotate relative to each other. This embodiment provides an anti-falling ICU drainage device, comprising a joint sealing assembly 1, wherein the joint sealing assembly 1 consists of a first sealing sleeve 2, a second sealing sleeve 3 and a rotating connection mechanism 4. The first sealing sleeve 2 and the second sealing sleeve 3 are respectively fixedly connected to the disconnected end of the drainage tube and sleeved and cooperate with each other. The rotating connection mechanism 4 of this specific embodiment comprises: spherical balls 411, which are uniformly distributed along the circumference of the inner wall of the first sealing sleeve 2 by a plurality of balls, and can be made of stainless steel, ceramic or magnetic material. An annular limiting groove 412 is provided on the inner wall of the first sealing sleeve 2. Its depth is slightly greater than the radius of the spherical ball 411 and is used to limit the axial displacement of the ball. A first annular limiting groove 511 is provided on the outer wall of the second sealing sleeve 3 as a rotational engagement section. It cooperates with the ball to form a rolling pair. The groove has an arc-shaped cross-section, and the radius of curvature matches that of the spherical ball 411.

[0029] When the patient's position changes, the drainage tube is subjected to pulling or torsional force. At this time, external force acts on the second sealing sleeve 3, pushing the spherical ball 411 to roll in the annular limiting groove 412 and the first annular limiting groove 511, causing the first sealing sleeve 2 and the second sealing sleeve 3 to rotate relative to each other to prevent the tube body from twisting or falling off. The rolling friction coefficient of the spherical ball 411 is much smaller than the sliding friction, ensuring smooth rotation; the depth of the annular limiting groove 412 constrains the axial displacement of the spherical ball 411 to prevent seal failure. During rotation, this solution also involves the design of the sealing assembly. The first sealing structure 6 (such as a rubber ring) of the first sealing sleeve 2 and the second sealing structure 7 of the second sealing sleeve 3 always maintain elastic contact to form a dynamic seal.

[0030] It can be understood that the structural design of the rotary connection mechanism 4 is as follows: by disposing the rotary connection mechanism 4 between the first sealing sleeve 2 and the second sealing sleeve 3, including the spherical ball 411, the annular retaining groove 412, and the first annular retaining groove 511, the first sealing sleeve 2 and the second sealing sleeve 3 can rotate relative to each other while maintaining a sealed connection. The spherical ball 411 rolls within the annular retaining groove 412, cooperating with the first annular retaining groove 511 to ensure that the drainage tube can continue to rotate flexibly when the patient's position changes, avoiding the problem of falling off due to pulling or twisting, and effectively preventing the drainage tube from falling off due to changes in the patient's position.

[0031] During the assembly of the joint sealing assembly 1, a plurality of spherical balls 411 are embedded in the annular limiting groove 412 of the first sealing sleeve 2, and medical silicone grease lubricant is applied; then the second sealing sleeve 3 is rotated to fit the first sealing sleeve 2 so that the balls fall into the first annular limiting groove 511. When ready for use, the first sealing sleeve 2 and the second sealing sleeve 3 are respectively installed on the disconnected ends of the drainage tube to ensure sealing. During clinical use, when the patient turns over, the sealing assembly rotates with the changes in the patient's body position to buffer external forces. When flow rate control is required, a flow rate regulating section 5 can also be designed. By axially sliding the second sealing sleeve 3, the balls are inserted into the second annular limiting groove 513 of the different bosses 512 of the flow rate regulating section 5 to change the flow cross-sectional area (such as the large boss 512 corresponds to the low speed gear).

[0032] In addition, the rotary connection mechanism 4 can be replaced by a ball bearing to reduce friction. The flow rate regulating section 5 on the outer wall of the second sealing sleeve 3 is provided with a stepped boss 512, and the second annular limiting groove 513 on the top of each boss 512 corresponds to a different flow rate gear. When it is necessary to enhance the stability of the overall structure, an annular magnetic element 11 (such as a neodymium magnet) can be embedded in the rotary fitting section of the second sealing sleeve 3 to adsorb the magnetic ball and enhance the rotational stability. A lubricant holding space 12 is provided, and the lubricant is replenished regularly to extend the service life. This device achieves anti-falling of the ICU drainage tube through mechanical structure and material optimization, and effectively prevents the problem of the drainage tube falling off due to changes in the patient's body position.

[0033] The overall structure of the device: The joint sealing assembly 1 is securely connected to the patient's body surface via a fixing device 13 (such as an adjustable strap or medical adhesive patch) to prevent the tube from shifting. A one-way valve 14 can be connected in series at its outlet to ensure unidirectional flow of drainage fluid and prevent backflow contamination. A negative pressure device 15 (such as a negative pressure ball or electric negative pressure pump) is connected to the end of the drainage tube via a standard interface to provide controllable negative pressure suction. During implementation, the joint sealing assembly 1 is first fixed in the appropriate position, the rotating connection mechanism 4 is adjusted to the optimal angle and locked, and the appropriate gear is selected using the flow rate adjustment section 5 according to the drainage requirements. Finally, the negative pressure device 15 is connected and the pressure parameters are set. The entire system can achieve safe, controllable and continuous drainage while maintaining sealing.

[0034] The rotary connection mechanism 4 is composed of a plurality of rotating parts distributed along the circumference of the first sealing sleeve 2, and the plurality of rotating parts are arranged on the mating surface between the first sealing sleeve 2 and the second sealing sleeve 3. The rotary connection mechanism 4 of this embodiment is composed of a plurality of rotating parts evenly distributed along the circumference of the first sealing sleeve 2, and these rotating parts are arranged between the mating surfaces of the first sealing sleeve 2 and the second sealing sleeve 3. When the flow rate regulating section 5 design is not adopted, the rotating parts can adopt a variety of structural forms, such as spherical balls 411, cylindrical rollers, tapered rollers or special-shaped rollers and other rotating structural parts; in addition, the rotating parts can also adopt a combined design, such as arranging spherical balls 411 and cylindrical rollers at intervals in the circumference, the spherical balls 411 provide multi-directional rotational freedom, and the cylindrical rollers enhance the axial bearing capacity. The rotating parts can be made of metal, engineering plastics or ceramics, and the surface can be polished or plated to reduce the friction coefficient.

[0035] Composite motion conditions: In actual use, rotating parts are subjected to radial, axial and moment loads simultaneously. By optimizing the roller profile and arrangement, it can be achieved that: the spherical ball 411 mainly provides multi-degree-of-freedom rotation; the cylindrical roller mainly enhances radial load bearing; the tapered roller mainly provides axial positioning; preferably, when used in combination, a reasonable distribution of loads in all directions can be achieved.

[0036] Preferably, the rotating member is a spherical ball 411. This solution preferably uses the spherical ball 411 as the rotating member, mainly based on three advantages: first, the spherical ball 411 can realize multi-degree-of-freedom movement, so that the first sealing sleeve 2 and the second sealing sleeve 3 can rotate relative to each other in any direction, perfectly adapting to the multi-angle traction caused by changes in the patient's body position; second, the equal diameter characteristic of the spherical ball 411 enables it to be accurately inserted into the second annular limiting groove 513 of each boss 512 of the flow rate adjustment section 5 provided in this solution, avoiding the jamming problem caused by the directionality of the cylindrical or conical roller; finally, the point contact mode between the spherical ball 411 and the groove has an extremely low friction coefficient, which can ensure smooth rotation without destroying the abutment sealing between the first sealing structure 6 and the second sealing structure 7, thereby achieving an optimal balance in terms of motion adaptability, flow rate adjustment accuracy and sealing stability.

[0037] During assembly, insert six to eight spherical balls 411 into the annular retaining groove 412 of the first sealing sleeve 2 and apply lubricant (such as medical silicone grease). Insert the rotating mating section of the second sealing sleeve 3 so that the spherical balls 411 fall into the first annular retaining groove 511. Check for rotational flexibility: When a certain torque is applied, the entire structure rotates through a certain angle without binding. During use, when the patient turns over, the joint seal assembly 1 automatically rotates and can withstand a certain torsional load.

[0038] The rotary connection mechanism 4 also includes an annular limiting groove 412, which is provided on the first sealing sleeve 2 and forms a receiving space for accommodating a plurality of spherical balls 411; the depth of the annular limiting groove 412 is greater than the radius of the spherical balls 411, and the depth of the annular limiting groove 412 is less than the diameter of the spherical balls 411. The annular limiting groove 412 is provided on the inner wall of the first sealing sleeve 2, and its cross-section can be designed as a rectangular groove or a semicircular groove. The advantage of the rectangular groove is that its right-angle structure can form a stable lubricant receiving space 12, ensuring long-term lubrication effect; the semicircular groove can provide a more uniform force distribution and reduce contact stress concentration. The depth of the annular limiting groove 412 is precisely designed to ensure that the spherical balls 411 can roll freely and prevent them from falling out, thereby ensuring the stability and reliability of the rotary connection mechanism 4.

[0039] The annular retaining groove 412, through depth control, axially constrains the spherical ball 411, allowing it to rotate freely within the groove without dislodging from its working position. As the spherical ball 411 rolls within the groove, it forms dynamic contact with the groove wall, minimizing frictional resistance and ensuring flexible relative rotation between the first and second sealing sleeves 2 and 3. The presence of the lubricant storage space 12 further reduces friction, extending service life while ensuring that the sealing structure maintains a good seal during operation.

[0040] Spherical balls 411 can be installed using either split assembly or elastic deformation assembly. Split assembly involves splitting the first sealing sleeve 2 into two parts, inserting the spherical balls 411, and then securing them, ensuring even distribution of the spherical balls 411. Elastic deformation assembly utilizes the elastic deformation properties of the material to press the spherical balls 411 into the annular retaining groove 412. In the preferred embodiment, lubricant is pre-injected into the groove to create a long-lasting lubrication system. After installation, rotational flexibility and axial stability are tested to ensure the device meets clinical requirements.

[0041] The outer wall of the second sealing sleeve 3 is provided with a rotation fitting section and a flow rate adjustment section 5, which defines the extension direction of the second sealing sleeve 3 and the direction away from the first sealing sleeve 2 as the first direction, and the rotation fitting section and the flow rate adjustment section 5 are arranged in sequence along the first direction; the rotation fitting section is provided with a first annular limiting groove 511 that cooperates with the spherical ball 411, and the first annular limiting groove 511 allows multiple spherical balls 411 to roll in the first annular limiting groove 511; the flow rate adjustment section 5 is provided with a plurality of bosses 512 arranged in sequence along the first direction, and the cross-sectional outer contour area of ​​each boss 512 increases along the first direction, and a second annular limiting groove 513 that is adapted to the spherical ball 411 is provided on the top of each boss 512, and the second annular limiting groove 513 allows multiple spherical balls 411 to roll in the second annular limiting groove 513. This structure realizes flexible rotation of the sealing assembly by rotating the mating section, and at the same time utilizes the boss 512 design of the flow rate adjustment section 5 to provide a multi-speed flow rate adjustment function for the ICU drainage device to meet different clinical drainage needs.

[0042] The outer wall of the second sealing sleeve 3 is provided with a rotational fitting section and a flow rate adjustment section 5 in sequence along the first direction. The rotational fitting section is provided with a continuous first annular limiting groove 511, the cross section of which is in the shape of a circular arc, which perfectly fits the spherical ball 411 to ensure the freedom of rotation. The flow rate adjustment section 5 is arranged with a plurality of bosses 512, and the outer contour area of ​​each boss 512 increases along the first direction to form a stepped structure. A second annular limiting groove 513 is provided on the top of each boss 512, and the curvature of the groove matches the spherical ball 411. In this embodiment: the basic type is provided with 2 bosses 512, corresponding to low and high flow rates; the precision type can be provided with 5 to 7 bosses 512 to achieve finer adjustment; the special type bosses 512 can be arranged with non-uniform spacing to adapt to specific clinical scenarios.

[0043] When flow rate adjustment is required, the operator axially moves the second sealing sleeve 3 in the first direction, disengaging the spherical ball 411 from the first annular retaining groove 511 of the rotating engagement section or the second annular retaining groove 513 of the current boss 512. During this movement, the guiding ramp structure 514 guides the spherical ball 411 for a smooth transition until it accurately engages the second annular retaining groove 513 of the target boss 512. To enhance the operating experience, magnetic elements can be installed in each second annular retaining groove 513, and the spherical ball 411 can be made of magnetic material. This magnetic attraction improves the accuracy and stability of gear positioning and provides a clear gear feedback.

[0044] During the adjustment process, due to the radial restraining force exerted by the first sealing sleeve 2 on the second sealing sleeve 3, as the second sealing sleeve 3 moves inwardly toward the first sealing sleeve 2, the outer contour of the boss 512 generates contact pressure with the inner wall of the first sealing sleeve 2, forcing the inner wall of the second sealing sleeve 3 to elastically deform, thereby changing the actual flow area of ​​the drainage channel. The ingenuity of this structure lies in the design of the outer contour area of ​​the boss 512 increasing in the first direction. As the area of ​​the boss 512 increases, the radial compression generated increases, and the cross-sectional area of ​​the drainage channel decreases accordingly, ultimately achieving a step-by-step reduction in flow rate.

[0045] It can be understood that the optimized design of the flow rate regulating section 5 adopted in this embodiment is reflected in that the flow rate regulating section 5 of the second sealing sleeve 3 is provided with a plurality of bosses 512, and a second annular limiting groove 513 is provided on the top of each boss 512, which cooperates with the spherical ball 411 to achieve multi-speed flow rate adjustment. The guide ramp structure 514 guides the spherical ball 411 to roll along the first direction, so that the spherical ball 411 can switch between different grooves more smoothly, thereby achieving precise control of the flow rate. In addition, the spherical ball 411 has the dual functions of rotational connection and flow rate regulation, which simplifies the structural design, improves the integration of the device, and ensures that the drainage speed of ICU patients can be flexibly adjusted according to clinical needs during treatment.

[0046] It is noteworthy that, whether in a stationary or rotating state, the spherical ball 411 always rolls within the first annular limiting groove 511 or the second annular limiting groove 513. This design ensures that the rotary sealing performance is not affected when the device is adjusting the flow rate, and the abutment 8 between the first sealing structure 6 and the second sealing structure 7 always maintains an effective seal, perfectly balancing the conflicting requirements of flow rate adjustment and leakage prevention.

[0047] During clinical operation, the physician secures the first sealing sleeve 2 with one hand and pushes and pulls the second sealing sleeve 3 in the first direction with their thumb. They feel the sound or vibration feedback of the spherical ball 411 falling into the second annular retaining groove 513 of the different bosses 512. The physician confirms the flow rate position by observing the markings (e.g., numbers or colors) on the bosses 512. Finally, after adjusting the position, the physician gently rotates the first sealing sleeve 2 or the second sealing sleeve 3 to test the rotational flexibility. In special circumstances, a small amount of saline can be injected to lubricate the contact surfaces and ensure smooth adjustment. Furthermore, the device features an anti-reverse mechanism to prevent accidental slippage.

[0048] Each boss 512 has a guide ramp structure 514 at one end near the rotational engagement section. The guide ramp structure 514 is used to guide the spherical ball 411 to roll in the first direction. The guide ramp structure 514 ensures that the spherical ball 411 can smoothly transition to the target gear position during flow rate adjustment, improving the operating feel and reducing adjustment resistance.

[0049] Each boss 512 has an inclined guide ramp structure 514 near the rotational engagement section, preferably with an angle of 30° to 45°. Typical guide ramp structures 514 can be: a continuous ramp (a uniform ramp extending through all bosses 512); a stepped ramp (a separate ramp for each boss 512); or a compound ramp (a primary ramp combined with an auxiliary guide groove). The base of the ramp smoothly connects to the second annular retaining groove 513.

[0050] During adjustment, the spherical ball 411 climbs along the guide ramp, which decomposes the axial thrust into a radial component (to escape from the current groove) and an axial component (to push to the next gear). Assisted by magnetic attraction, the spherical ball 411 automatically aligns and falls into the target groove when it reaches it, completing the gear change.

[0051] During operation, hold the first sealing sleeve 2 with one hand and apply steady force in the first direction with your thumb. Finally, feel the change in resistance as the spherical ball 411 transitions along the inclined surface. When you hear a "click," the gear shift is complete. It is recommended to keep the drainage tube straight during adjustment.

[0052] The rotary connection mechanism 4 is arranged on the inner wall of the first sealing sleeve 2; the inner wall of the first sealing sleeve 2 is provided with a first sealing structure 6; the outer wall of the second sealing sleeve 3 is correspondingly provided with a second sealing structure 7; when the rotating member cooperates with the first annular limiting groove 511, the first sealing structure 6 and the second sealing structure 7 abut against each other to form an abutment 8; the second sealing structure 7, the abutment 8, the first sealing structure 6 and the rotating member are arranged in sequence along the first direction.

[0053] The first sealing structure 6 is located near the inner wall of the first sealing sleeve 2 and is an annular protrusion made of an elastic material (such as medical silicone). Correspondingly, the second sealing structure 7 is located on the outer wall of the second sealing sleeve 3 and is a tapered mating surface machined from a hard material (such as PEEK). When the rotating member mates with the first annular retaining groove 511, the two form an axial arrangement: the second sealing structure 7, the abutment 8, the first sealing structure 6, and the rotating member. In the preferred embodiment, the compression of the first sealing structure 6 is approximately 20-30% of its original height.

[0054] During the assembly process, the second sealing sleeve 3 first contacts the first sealing sleeve 2, and the axial propulsion force causes the first sealing structure 6 to undergo elastic deformation. As the push continues, the second sealing sleeve 3 gradually passes over the first sealing structure 6, and the relative position relationship between the two changes from the initial "first sealing structure 6 in front" to "second sealing structure 7 in front". At this time, the second sealing sleeve 3 is appropriately withdrawn. Under the guidance of the inner wall of the first sealing sleeve 2, the end face of the first sealing structure 6 and the end face of the second sealing structure 7 are precisely aligned and tightly abutted to form a reliable sealing contact surface. After the assembly is completed, the sealing structure automatically returns to its natural state. In subsequent use, this assembly method can effectively avoid additional frictional resistance during the rotation process.

[0055] The first sealing structure 6 is provided with a first guide bevel 9 at the other end relative to the abutment 8; the second sealing structure 7 is provided with a second guide bevel 10 at the other end relative to the abutment 8. The first guide bevel 9 and the second guide bevel 10 optimize the assembly path of the sealing component, reduce friction resistance, and improve the fitting accuracy of the sealing surface. The first guide bevel 9 is formed on the side of the first sealing structure 6 that is away from the abutment 8; the corresponding second guide bevel 10 is provided at the opposite end of the second sealing structure 7, and the angle matches the first guide bevel 9. Both bevels are made of low-friction coefficient materials (such as PTFE coating or oil-containing nylon), and the roots of the bevels smoothly transition with their respective sealing structures. In the installed state, a guide gap of a certain distance is retained between the two bevels.

[0056] During assembly, the second guide bevel 10 of the second sealing sleeve 3 first contacts the first guide bevel 9 of the first sealing sleeve 2, converting the axial propulsion force into a radial expansion force, causing the first sealing structure 6 to elastically deform. As the second sealing sleeve 3 continues to advance, it gradually passes over the first sealing structure 6, transforming their relative positions: from the initial "first sealing structure 6 in front, second sealing structure 7 in back" to "second sealing structure 7 in front, first sealing structure 6 in back." At this point, if the second sealing sleeve 3 is appropriately withdrawn, the inner wall of the first sealing sleeve 2 guides the abutting end surfaces of the first sealing structure 6 and the second sealing structure 7, achieving precise alignment and tight contact, forming a reliable sealing contact surface. After assembly is complete, the sealing structure automatically returns to its natural state. During subsequent use, the guide bevel no longer participates in the rotation, effectively avoiding additional frictional resistance during rotation. Furthermore, if increased insertion resistance is observed during clinical maintenance, the bevel can be lubricated with medical silicone grease.

[0057] It can be understood that the dynamic coordination and auxiliary optimization design of the sealing structure are as follows: the first sealing sleeve 2 and the second sealing sleeve 3 form a dynamic seal through the abutment 8 of the first sealing structure 6 and the second sealing structure 7, and cooperate with the guiding effect of the first guide bevel 9 and the second guide bevel 10 to maintain a tight fit during the rotation process to prevent liquid leakage. The design of the lubricant accommodating space 12 effectively reduces friction and extends the service life; at the same time, the magnetic spherical ball 411 is used in conjunction with the annular magnetic element 11 to enhance the stability of the rotating connection mechanism 4 and avoid accidental loosening. This design takes into account flexibility and durability while ensuring sealing, and is suitable for long-term drainage needs in the complex environment of the ICU.

[0058] The spherical ball bearings 411 are made of a magnetic material. An annular magnetic element 11 is embedded in the outer wall of the second sealing sleeve 3, corresponding to the rotational engagement section. This magnetic attraction enhances the positioning stability of the rotary connection mechanism 4 and prevents accidental shifting. The spherical ball bearings 411 are made of a permanent magnetic material such as neodymium iron boron, and their diameter matches the annular retaining groove 412. The corresponding annular magnetic element 11, embedded in the rotational engagement section of the outer wall of the second sealing sleeve 3, is a ring-shaped neodymium magnet with an inner diameter that closely matches the outer wall of the second sealing sleeve 3.

[0059] When the spherical ball 411 rolls to the corresponding position of the annular magnetic element 11, the magnetic force causes the spherical ball 411 to automatically center and maintain stable contact; during rotation, the magnetic force provides a moderate holding force, ensuring gear stability without affecting rotation flexibility.

[0060] A lubricant storage space 12 is provided between the mating surfaces of the rotary connection mechanism 4. This space is located between the mating surfaces of the first sealing sleeve 2 and the second sealing sleeve 3. The space is formed in three key locations: the bottom groove area of ​​the annular retaining groove 412, the oil reservoir on the sidewall of the first annular retaining groove 511, and the annular oil storage gap at the junction 8 between the first sealing structure 6 and the second sealing structure 7. The lubricant storage space 12 is a continuous or discontinuous groove structure with a moderate depth to store lubricant without excessively affecting structural strength.

[0061] The present invention achieves multifunctional optimization of the ICU drainage device through innovative structural design: first, the rotating connection mechanism 4 adopts a spherical ball 411 in combination with an annular limiting groove 412 and a first annular limiting groove 511, so that the first sealing sleeve 2 and the second sealing sleeve 3 can achieve flexible relative rotation while maintaining a sealed connection, effectively preventing the drainage tube from falling off due to changes in the patient's body position; secondly, the flow rate adjustment section 5 is provided with a stepped boss 512 with a second annular limiting groove 513 and a guide ramp structure 514, so that the spherical ball 411 can smoothly switch gears and realize the regulation of the drainage speed; finally, the cooperation of the first sealing structure 6 and the second sealing structure 7 in the dynamic sealing structure, supplemented by the lubricant accommodating space 12, not only ensures the sealing reliability during the rotation process, but also reduces friction loss. The device effectively prevents the drainage tube from falling off due to changes in the patient's body position.

[0062] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0064] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An anti-falling ICU drainage device, characterized in that: include: A joint sealing assembly (1) includes a first sealing sleeve (2), a second sealing sleeve (3) and a rotating connection mechanism (4); the first sealing sleeve (2) and the second sealing sleeve (3) are connected to the disconnected end of the drainage tube at an intersection and cooperate with each other; the rotating connection mechanism (4) is provided on the first sealing sleeve (2), and the rotating connection mechanism (4) is movably sealed and sleeved with the second sealing sleeve (3) so that the first sealing sleeve (2) and the second sealing sleeve (3) can rotate relative to each other.

2. The anti-falling ICU drainage device according to claim 1, characterized in that: The rotary connection mechanism (4) comprises a plurality of rotating parts distributed along the circumference of the first sealing sleeve (2), and the plurality of rotating parts are arranged on the matching surface between the first sealing sleeve (2) and the second sealing sleeve (3).

3. The anti-falling ICU drainage device according to claim 2, characterized in that: The rotating member is a spherical ball (411).

4. The anti-falling ICU drainage device according to claim 3, characterized in that: The rotary connection mechanism (4) further comprises an annular limiting groove (412), which is provided on the first sealing sleeve (2) and forms an accommodating space for accommodating a plurality of the spherical balls (411); the depth of the annular limiting groove (412) is greater than the radius of the spherical balls (411), and the depth of the annular limiting groove (412) is less than the diameter of the spherical balls (411).

5. The anti-falling ICU drainage device according to claim 3, characterized in that: The outer wall of the second sealing sleeve (3) is provided with a rotational fitting section and a flow rate regulating section (5), and the extension direction of the second sealing sleeve (3) is defined as a first direction and the direction away from the first sealing sleeve (2), and the rotational fitting section and the flow rate regulating section (5) are arranged in sequence along the first direction; the rotational fitting section is provided with a first annular limiting groove (511) that cooperates with the spherical balls (411), and the first annular limiting groove (511) is provided for a plurality of the spherical balls (411) to be positioned in the first annular limiting groove. The flow rate regulating section (5) is provided with a plurality of bosses (512) arranged in sequence and at intervals along a first direction, the cross-sectional outer contour area of ​​each boss (512) increases gradually along the first direction, and a second annular limiting groove (513) adapted to the spherical ball (411) is provided on the top of each boss (512), and the second annular limiting groove (513) is provided for the plurality of spherical balls (411) to roll in the second annular limiting groove (513).

6. The anti-falling ICU drainage device according to claim 5, characterized in that: A guide slope structure (514) is provided at one end of each boss (512) close to the rotational engagement section, and the guide slope structure (514) is used to guide the spherical ball (411) to roll in a first direction.

7. The anti-falling ICU drainage device according to claim 5, characterized in that: The rotary connection mechanism (4) is provided on the inner wall of the first sealing sleeve (2); the inner wall of the first sealing sleeve (2) is provided with a first sealing structure (6); the outer wall of the second sealing sleeve (3) is correspondingly provided with a second sealing structure (7); when the rotating member cooperates with the first annular limiting groove (511), the first sealing structure (6) and the second sealing structure (7) abut against each other to form an abutment (8); the second sealing structure (7), the abutment (8), the first sealing structure (6) and the rotating member are arranged in sequence along a first direction.

8. The anti-falling ICU drainage device according to claim 7, characterized in that: The first sealing structure (6) is provided with a first guiding inclined surface (9) at the other end relative to the abutment (8); and the second sealing structure (7) is provided with a second guiding inclined surface (10) at the other end relative to the abutment (8).

9. The anti-falling ICU drainage device according to claim 5, characterized in that: The spherical ball (411) is made of magnetic material; an annular magnetic element (11) is embedded in the outer wall of the second sealing sleeve (3) at a position corresponding to the rotating fitting section.

10. The anti-falling ICU drainage device according to claim 2, characterized in that: A lubricant accommodating space (12) is provided between the mating surfaces of the rotary connection mechanism (4).

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