An infusion stand
By employing a full-dimensional shock absorption design on the infusion stand, including a solid spherical swing core, a cross-shaped pre-tension spring assembly, and an adjustable pre-tension spring, the problems of inaccurate drip rate and air bubbles entering the tubing caused by large swings of the infusion stand are solved, thus achieving stability and safety in the infusion process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU MEDICAL UNIV
- Filing Date
- 2026-04-30
- Publication Date
- 2026-05-29
AI Technical Summary
The existing IV stand lacks effective sway restraint and shock absorption structure, causing the IV container to swing significantly when the patient moves or the stand moves, leading to problems such as inaccurate drip rate and air bubbles entering the tubing, increasing the burden on medical staff and posing safety risks.
It adopts a solid spherical swing core and a cross-shaped symmetrical pre-tension spring assembly combined with a vertically adjustable pre-tension spring to form a full-dimensional swing constraint and shock absorption structure, including radial swing angle limitation and axial impact absorption. With adjustable pre-tension and height adjustment, it can adapt to different load and scenario requirements.
It effectively suppresses multi-directional shaking and vibration of the infusion container, ensures accurate drip rate, eliminates air bubbles in the tubing, reduces safety risks and the burden on medical staff, and is suitable for clinical use in multiple scenarios.
Smart Images
Figure CN224292299U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of infusion stand technology, and more particularly to an infusion stand. Background Technology
[0002] Infusion stands are essential medical auxiliary devices for clinical intravenous infusion therapy. Their core function is to suspend infusion bottles or bags, providing a stable height difference for the medication and ensuring a continuous and steady infusion. The suspension height is flexibly adjustable to adapt to different clinical scenarios and patient positioning needs, making them indispensable basic nursing equipment in hospital wards, emergency rooms, operating rooms, and other similar settings.
[0003] The infusion stands currently widely used in clinical practice mostly adopt a basic structure of upright poles and top hooks. The infusion containers are directly suspended by the hooks, without effective swing restraint and shock absorption structures. In clinical use, the suspended objects are prone to large swings. Patients turning over, getting out of bed, changing body position, bed transfers, vibrations from pushing the infusion stand across the threshold, medical staff pulling on the infusion tubing, or accidental collisions with the stand can all cause the infusion containers to swing continuously like a pendulum, and the amplitude of the swing is difficult to decay quickly.
[0004] This oscillation issue directly impacts the core treatment safety and efficacy of intravenous infusion. On one hand, precise control of the infusion rate is a crucial requirement for clinical medication, especially for vasoactive drugs, chemotherapy drugs, and infusions for pediatric and critically ill patients. Deviations in the infusion rate can directly affect drug efficacy and even trigger serious adverse reactions such as sudden changes in blood pressure and heart rate, and excessive circulatory load. Oscillation causes dynamic changes in the height difference between the infusion container and the puncture site, resulting in continuous fluctuations in hydrostatic pressure. This directly causes the infusion rate to fluctuate drastically, completely deviating from the treatment parameters set by the doctor.
[0005] On the other hand, continuous shaking will cause the medication in the infusion container to shake violently. Large fluctuations in the liquid level can easily lead to the infusion set inlet being frequently exposed to air. Air enters the tubing along with the medication, forming bubbles. This not only increases the workload of medical staff by repeatedly venting the air, but also causes venous irritation and vascular inflammation in patients. A large number of bubbles entering the bloodstream can also cause air embolism, directly endangering the patient's life.
[0006] Therefore, it is necessary to propose an infusion stand to solve the above problems. Utility Model Content
[0007] This application provides an infusion stand to address the technical issues in the existing infusion stands, which often lack effective swing restraint and shock absorption structures. In clinical practice, patient activities, stand movement, and tubing traction can easily cause the infusion container to swing significantly. This problem can lead to inaccurate drip rates that deviate from treatment requirements, and can also cause air bubbles to enter the tubing, increasing the burden on medical staff and even causing medical safety risks such as air embolism.
[0008] This application provides an infusion stand, including an upper support rod and a lower support rod. A solid spherical swing core is provided on the upper support rod, and the spherical swing core is sleeved in a sealed cavity on a connecting shell.
[0009] A cross-shaped symmetrical pre-tension spring assembly is installed between the top of the spherical swing core and the top cover of the sealed cavity for radial swing angle constraint and vibration reduction.
[0010] A vertically adjustable preload spring is provided at the connection between the upper and lower uprights for axial impact damping.
[0011] The technical solutions described above in this application embodiment have at least the following technical effects: addressing the clinical pain points of existing infusion stands being prone to large swings, which in turn lead to inaccurate infusion drip rates and air bubbles entering the tubing, the multi-dimensional swing constraint and shock absorption structure design effectively suppresses the multi-directional shaking and vibration of the infusion container, ensuring that the infusion drip rate always meets the precise requirements set by the doctor's order, eliminating the safety hazard of air bubbles entering the tubing, significantly reducing the safety risks of clinical infusion and the operational burden on medical staff, and adapting to the infusion needs of various clinical scenarios such as ward transfer and patient self-movement.
[0012] In this embodiment, the tension spring assembly consists of four medical stainless steel tension springs evenly distributed at 90°.
[0013] This technical solution, through a 90° evenly distributed four-tension spring structure design, precisely addresses the core clinical pain point of the existing infusion stand suspension end being prone to large swings. It fundamentally avoids problems such as inaccurate drip rate and air bubbles entering the infusion tubing caused by the shaking of the infusion container, effectively reducing the safety risks of clinical infusion, reducing the repetitive operations of medical staff to expel air and adjust the drip rate, and adapting to the clinical infusion needs of multiple scenarios.
[0014] In this embodiment, the solid spherical swing core is a medical stainless steel solid sphere, with a uniform swing gap maintained between the outer wall of the sphere and the inner wall of the cavity, and the maximum radial swing angle of the spherical swing core is limited to ±15°.
[0015] This technical solution, through the structural design of a medical-grade stainless steel solid spherical swing core, combined with precise swing gap and ±15° swing angle limit, accurately addresses the core clinical pain point of unrestrained large-scale swinging at the suspension end of existing infusion stands. It fundamentally limits the swing amplitude of the infusion container, effectively avoiding problems such as inaccurate infusion drip rate and air bubbles entering the tubing caused by large-scale shaking, reducing clinical infusion safety risks and the operational burden on medical staff, and adapting to the clinical infusion needs of multiple scenarios.
[0016] In this embodiment, a sleeve seat is provided at the bottom of the connecting shell. The sleeve seat is movably connected to the transmission hole on the lower upright through a spring pin. A preload spring is provided in the transmission hole to realize axial vibration reduction of the upper upright.
[0017] This technical solution, through an axial vibration damping structure design that combines a socket, spring pin, and pre-compression spring, precisely addresses the core clinical pain point of existing infusion stands where axial vibration is easily transmitted, leading to infusion container shaking. It effectively blocks axial impacts generated during stand movement and transport, and, in conjunction with a radial constraint structure, completely eliminates safety hazards such as inaccurate infusion drip rate and air bubbles entering the tubing, significantly reducing the safety risks of clinical infusion and the operational burden on medical staff. This structure has a simple assembly process, stable performance over long-term use, and can be widely adapted to the infusion needs of various clinical scenarios such as wards, emergency rooms, and operating rooms.
[0018] In this embodiment, the bottom wall of the pre-compression spring is provided with a screw-type adjustment seat that can be moved up and down by rotating an adjustment knob, thereby adjusting the preload of the pre-compression spring to adapt to infusion containers of different weights.
[0019] This technical solution, through its adjustable preload spring design, precisely addresses the core clinical pain points of existing infusion stand axial vibration damping structures, such as poor adaptability and inability to match infusion containers of different weights. It fundamentally solves the problem of vibration damping failure and significant container swaying caused by the mismatch between load and preload. It comprehensively ensures precise and stable infusion drip rates under various infusion conditions, eliminates the safety hazard of air bubbles entering the infusion tubing, effectively reduces the safety risks of clinical infusions and the repetitive operational burden on medical staff, and significantly expands the clinical application scenarios of infusion stands.
[0020] In this embodiment, a connecting rod is movably sleeved on the top of the upper upright, which can adjust the height of the overall infusion stand.
[0021] This technical solution, through an adjustable connecting rod structure that is movably sleeved at the top of the upper pole, precisely addresses the core clinical pain points of existing infusion stands: poor adaptability of height adjustment and increased swing amplitude of the suspended end after height adjustment. It can flexibly adapt to the infusion height requirements of different patient positions and different clinical scenarios, while ensuring stable and controllable anti-sway and shock absorption performance of the infusion stand throughout the height adjustment process. It effectively maintains the infusion drip rate in accordance with the doctor's orders, eliminates the safety hazard of air bubbles entering the infusion tubing, and significantly reduces the safety risks of clinical infusion and the repetitive operation burden on medical staff.
[0022] In this embodiment, a multi-position infusion hook is provided at the top of the connecting rod, and each hook is equipped with a spring anti-detachment spring.
[0023] This technical solution, through a multi-position infusion hook structure design with a spring-loaded anti-detachment tab at the top of the connecting rod, precisely addresses the core clinical pain points of existing infusion stands, such as insufficient hook positions, easy slippage of infusion containers, and subsequent significant swaying of the tubing. It can simultaneously adapt to the needs of multi-pathway clinical infusion, reliably eliminating the risk of container slippage throughout the process, reducing the causes of swaying from the suspension end, effectively ensuring the accuracy and stability of the infusion drip rate, avoiding safety hazards such as air bubbles in the tubing and drug leakage, and significantly reducing the safety risks of clinical infusion and the operational burden on medical staff.
[0024] Beneficial Effects: This utility model addresses core clinical pain points of existing infusion stands, such as unrestrained large-scale swaying, inaccurate infusion drip rates, air bubbles entering the tubing, and easy container slippage. It provides a comprehensive anti-sway and shock-absorbing infusion stand with the following key benefits: This solution uses a solid spherical swaying core combined with a cross-shaped symmetrical pre-tension spring assembly to achieve precise restraint and rapid shock absorption of radial swaying; an adjustable pre-compression spring efficiently absorbs axial impact, forming a radial + axial full-coverage anti-sway and shock-absorbing system. This fundamentally suppresses infusion container swaying, ensuring the drip rate meets the precise requirements of the doctor's orders and eliminating the medical safety hazards of air bubbles entering the tubing. Simultaneously, the multi-position hook with anti-detachment spring adapts to multi-pathway infusion needs, eliminating the risk of container slippage; the adjustable height and pre-tension design flexibly adapts to different clinical scenarios, patient positions, and infusion loads, significantly reducing clinical infusion safety risks and the operational burden on medical staff, demonstrating excellent clinical practicality and promotional value. Attached Figure Description
[0025] Figure 1 This is a three-dimensional structural diagram of the infusion stand provided in the embodiments of this application;
[0026] Figure 2 This is a schematic cross-sectional view of the infusion stand provided in an embodiment of this application;
[0027] Figure 3 An exploded structural diagram of the upper and lower uprights provided in an embodiment of this application;
[0028] The following are the labeling elements in the figure:
[0029] 1. Upper upright; 11. Solid spherical oscillating core; 12. Connecting shell; 13. Sealed cavity; 14. Tension spring assembly; 141. Tension spring; 15. Sleeve seat; 16. Spring pin; 2. Lower upright; 21. Transmission hole; 22. Preload spring; 23. Adjusting knob; 24. Threaded adjusting seat; 3. Connecting rod; 31. Infusion hook. Detailed Implementation
[0030] The infusion stands currently widely used in clinical practice mostly adopt a basic structure of upright poles and top hooks. The infusion containers are directly suspended by the hooks, without effective swing restraint and shock absorption structures. In clinical use, the suspended objects are prone to large swings. Patients turning over, getting out of bed, changing body position, bed transfers, vibrations from pushing the infusion stand across the threshold, medical staff pulling on the infusion tubing, or accidental collisions with the stand can all cause the infusion containers to swing continuously like a pendulum, and the amplitude of the swing is difficult to decay quickly.
[0031] This oscillation issue directly impacts the core treatment safety and efficacy of intravenous infusion. On one hand, precise control of the infusion rate is a crucial requirement for clinical medication, especially for vasoactive drugs, chemotherapy drugs, and infusions for pediatric and critically ill patients. Deviations in the infusion rate can directly affect drug efficacy and even trigger serious adverse reactions such as sudden changes in blood pressure and heart rate, and excessive circulatory load. Oscillation causes dynamic changes in the height difference between the infusion container and the puncture site, resulting in continuous fluctuations in hydrostatic pressure. This directly causes the infusion rate to fluctuate drastically, completely deviating from the treatment parameters set by the doctor.
[0032] On the other hand, continuous shaking will cause the medication in the infusion container to shake violently. Large fluctuations in the liquid level can easily lead to the infusion set inlet being frequently exposed to air. Air enters the tubing along with the medication, forming bubbles. This not only increases the workload of medical staff by repeatedly venting the air, but also causes venous irritation and vascular inflammation in patients. A large number of bubbles entering the bloodstream can also cause air embolism, directly endangering the patient's life.
[0033] Based on this, in order to improve the technical problems existing in related technologies, such as the lack of effective swing restraint and shock absorption structure in most infusion stands, which easily cause large swing of the infusion container due to patient movement, stand movement, and tubing traction in clinical practice; this problem can cause inaccurate drip rate deviating from treatment requirements, and can also easily cause air bubbles to enter the tubing, increasing the burden on medical staff, and even causing medical safety risks such as air embolism, the embodiments of this application provide the following solutions.
[0034] Please refer to the following: Figures 1 to 3 This application provides an infusion stand, which includes an upper upright 1 and a lower upright 2. A solid spherical swing core 11 is provided on the upper upright 1, and the spherical swing core is sleeved in a sealed cavity 13 on a connecting shell 12.
[0035] A cross-shaped symmetrical pre-tension spring assembly 14 is installed between the top of the spherical swing core and the top cover of the sealed cavity 13 for radial swing angle constraint and vibration reduction.
[0036] A vertically adjustable preload spring is installed at the connection between the upper upright 1 and the lower upright 2 for axial impact damping.
[0037] The infusion stand provided in this embodiment has a structure in which the solid spherical swing core 11 and the sealed cavity 13 on the connecting shell 12 cooperate to provide the upper upright 1 with a full-angle radial swing range and basic limit, which can prevent unrestrained large-scale free swing at the infusion suspension end; the cross-shaped symmetrical pre-tension spring group 14 can provide symmetrical and uniform radial pre-tension force to the spherical swing core, quickly attenuate the swing kinetic energy, suppress pendulum-like continuous swaying, and realize active constraint and shock absorption of radial swing; the vertically adjustable pre-tension spring can effectively absorb the axial impact generated by the movement of the stand and road bumps, and block the transmission of axial vibration to the upper upright 1 suspension end. Each technical feature independently achieves the protection effect in the corresponding dimension, and accurately solves the swaying problem in the corresponding scenario;
[0038] This design is based on the movable fit between the spherical swing core and the sealed cavity 13. Combined with the radial constraint and shock absorption of the cross-shaped symmetrical pre-tension spring group 14 and the axial impact absorption of the vertically adjustable pre-tension spring, a full-dimensional swing constraint and shock absorption system covering both radial and axial directions is formed. The various structures are interconnected and work together, and the radial swing constraint and axial shock absorption effects complement each other. This can simultaneously suppress the swaying and vibration of the infusion stand in multiple directions, fundamentally avoiding problems such as inaccurate drip rate and air bubbles entering the tubing caused by large swings of the infusion container, and comprehensively ensuring the stability and safety of the infusion process.
[0039] In this embodiment, the tension spring assembly 14 consists of four medical stainless steel tension springs evenly distributed at 90°.
[0040] With this configuration, the solution employs four medical-grade stainless steel tension springs evenly distributed at 90° to form a pre-tensioned tension spring group 14. This group creates a symmetrical and uniform pre-tensioned constraint in the radial plane, covering the entire circumference without any blind spots. Each tension spring 141 experiences balanced force, eliminating the risk of off-center load failure. It can quickly respond to swing displacement and provide stable return force, effectively attenuating swing kinetic energy and suppressing the continuous transmission of pendulum-like swaying. The medical-grade stainless steel material is suitable for the sterile and corrosion-resistant clinical environment, ensuring the mechanical stability and service life of the structure over long-term use. The cross-shaped symmetrical pre-tensioned tension spring group 14, combined with the movable connection structure between the solid spherical swing core 11 and the sealed cavity 13, can evenly apply radial constraint force to the spherical swing core, achieving synchronous constraint and rapid return of the swing core across all angles. Simultaneously, it forms a synergistic damping system with the vertically adjustable pre-tensioning spring, covering both radial and axial directions, thus compensating for the shortcomings of a single structure and significantly enhancing the overall structure's all-dimensional swing suppression and damping effect.
[0041] In this embodiment, the solid spherical swing core 11 is a medical stainless steel solid sphere, with a uniform swing gap maintained between the outer wall of the sphere and the inner wall of the cavity, and the maximum radial swing angle of the spherical swing core is limited to ±15°.
[0042] This design utilizes a solid medical-grade stainless steel sphere as the spherical swing core 11. A uniform swing gap is reserved between the outer wall of the sphere and the inner wall of the sealed cavity 13. Simultaneously, the maximum radial swing angle of the spherical swing core is limited to ±15°. The solid medical-grade stainless steel material possesses excellent structural strength, corrosion resistance, and clinical biocompatibility, making it suitable for the sterile and humid environment of hospitals. Long-term use poses no risk of deformation or failure. The uniform swing gap ensures smooth, unhindered rotation of the swing core at all angles, and the ±15° physical limit directly prevents excessive swinging beyond the permitted range, constraining the swing amplitude from the fundamental structural level and avoiding unrestrained pendulum-like swaying.
[0043] In this embodiment, a sleeve seat 15 is provided at the bottom of the connecting shell 12. The sleeve seat 15 is movably sleeved with the transmission hole 21 on the lower upright 2 through a spring pin 16. A preload spring 22 is provided in the transmission hole 21 to realize axial vibration reduction of the upper upright 1.
[0044] With this configuration, the connecting sleeve 15 fixed at the bottom of the connecting shell 12 in this utility model is movably connected to the transmission hole 21 on the lower upright 2 via a spring pin 16. This, combined with the preload spring 22 arranged within the transmission hole 21, forms a complete axial damping and coaxial connection structure. The movable sleeve design of the spring pin 16 ensures the coaxiality of the upper upright 1 and lower upright 2 assembly, preventing radial tilting and instability of the frame, while also providing smooth and controllable axial relative displacement. The preload spring 22 provides continuous and stable axial preload force, effectively absorbing axial impact vibrations generated by frame pushing, bed transfer, and road bumps, blocking the transmission of vibration to the infusion suspension end at the top of the upper upright 1, thus eliminating the problem of infusion container shaking caused by vibration in the axial dimension. Furthermore, this structure is easy to assemble, has a firm and reliable connection, and can adapt to the high-frequency, multi-scenario use needs of clinical practice.
[0045] In this embodiment, the bottom wall of the preload spring 22 is provided with a screw-type adjustment seat 24 that can be moved up and down by rotating the adjustment knob 23, thereby adjusting the preload force of the preload spring 22 to adapt to infusion containers of different weights.
[0046] This configuration allows the adjustable preload structure to seamlessly connect with the axial damping unit composed of the socket 15, spring pin 16, and preload spring 22. Simultaneously, it forms a synergistic, all-dimensional anti-sway and vibration-damping system with the radial swing constraint unit consisting of the upper solid spherical swing core 11 and the cross-shaped symmetrical preload spring assembly 14. Precise adjustment of the preload ensures optimal matching between axial damping and radial swing constraint performance. Regardless of the load on the infusion container, the coaxial assembly accuracy of the upper and lower uprights 1 and 2 is maintained stably. This ensures a uniform swing gap between the spherical swing core and the sealed cavity 13, and guarantees that the symmetrical preload of the cross-shaped preload spring assembly 14 remains uniform and stable. This avoids problems such as frame tilting, swing limit failure, and decreased vibration damping performance caused by load changes. The overall anti-sway and vibration-damping system maintains stable and excellent performance under full load conditions, comprehensively enhancing the anti-sway and anti-vibration capabilities of the infusion stand.
[0047] In this embodiment, a connecting rod 3 is also movably sleeved on the top of the upper support 1, which can adjust the height of the overall infusion stand.
[0048] With this design, the connecting rod 3, which is movably fitted at the top of the upper support 1, allows for flexible adjustment of the overall suspension height of the infusion stand, fully adapting to the diverse infusion needs in clinical settings. The movable connecting structure boasts stable coaxial assembly precision and smooth adjustment stroke, enabling quick height adjustment without the need for additional tools. It accurately matches different patient positions, such as bedridden, sitting, and ambulating, as well as the infusion height requirements of various scenarios, including wards, emergency rooms, and operating rooms. This ensures stable and controllable hydrostatic pressure of the medication during infusion, while also accommodating different sizes of infusion containers, significantly improving the ease of operation and clinical adaptability of the infusion stand.
[0049] In this embodiment, a multi-position infusion hook 31 is provided at the top of the connecting rod 3, and each hook is equipped with a spring anti-detachment spring.
[0050] This design, with its multi-position spring-loaded anti-detachment infusion hook 31, seamlessly integrates with the height adjustment structure of the connecting rod 3, the radial constraint structure of the solid spherical swing core 11, and the axially adjustable pre-tightening shock absorption structure, forming a comprehensive and synergistic protection system. The symmetrical and uniform arrangement of the multiple positions ensures that the load of multiple infusion containers is evenly distributed around the central axis at the top of the connecting rod 3, effectively preventing frame tilting and amplified swing amplitude caused by eccentric loads. This ensures that the radial swing constraint and axial shock absorption structures are always in optimal working condition. The spring-loaded anti-detachment clips prevent tubing impact loads caused by container slippage, avoiding the transmission of additional swing factors to the lower anti-sway shock absorption structure. This complements the comprehensive anti-sway system, comprehensively enhancing the anti-sway and anti-detachment performance of the infusion stand, fundamentally mitigating clinical risks such as inaccurate drip rate and air bubbles in the tubing.
[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An infusion stand, comprising an upper support (1) and a lower support (2), characterized in that: A solid spherical swing core (11) is provided on the upper upright (1), and the spherical swing core is sleeved in the sealed cavity (13) on the connecting shell (12); A cross-shaped symmetrical pre-tension spring assembly (14) is installed between the top of the spherical swing core and the top cover of the sealed cavity (13) for radial swing angle constraint and vibration reduction; A vertically adjustable preload spring is provided at the connection between the upper upright (1) and the lower upright (2) for axial impact damping.
2. The infusion stand according to claim 1, characterized in that: The tension spring assembly (14) consists of four medical stainless steel tension springs evenly distributed at 90°.
3. An IV stand according to claim 2, characterized in that: The solid spherical swing core (11) is a medical stainless steel solid sphere. The outer wall of the sphere and the inner wall of the cavity maintain a uniform swing gap. The maximum radial swing angle of the spherical swing core is limited to ±15°.
4. An IV stand according to claim 1, characterized in that: The bottom of the connecting shell (12) is provided with a socket (15), which is movably connected to the transmission hole (21) on the lower upright (2) through a spring pin (16). A preload spring (22) is provided in the transmission hole (21) to realize axial vibration reduction of the upper upright (1).
5. An IV stand according to claim 4, characterized in that: The bottom wall of the pre-compression spring (22) is provided with a screw adjustment seat (24) that can be moved up and down by rotating the adjustment knob (23) to adjust the pre-tightening force of the pre-compression spring (22) and adapt to infusion containers of different weights.
6. An IV stand according to claim 1, characterized in that: The top of the upper support rod (1) is also movably fitted with a connecting rod (3), which can adjust the height of the entire infusion stand.
7. An IV stand according to claim 6, characterized in that: The top of the connecting rod (3) is provided with a multi-position infusion hook (31), and each hook is equipped with a spring anti-detachment spring.