Hydraulic self-adapting adjusting type safety footstool

Abstract

The utility model provides a kind of hydraulic self-adapting adjustment type safety step high stool, belong to medical instrument technical field, and the step high stool includes supporting base, pedal platform and the lifting mechanism between the two. Lifting mechanism includes hydraulic drive device, push axle and X-shaped support rod assembly. The middle part of support rod assembly is hinged to each other, and one end of first support rod is hinged to base, and the other end is slidably arranged in the second slide of pedal platform, and one end of second support rod is hinged to push axle, and the other end is hinged to pedal platform. Hydraulic drive device drives push axle to slide in the first slide of base, and the step platform is realized stepless lifting by the opening and closing of support rod angle. The utility model adopts closed hydraulic drive, and adjustment is fast and stable, and full stroke adjustment time is less than or equal to 20 seconds, and it has active anti-overturning function, effectively solves the coordination problem of intraoperative operator's standing height and stability, significantly improves the safety and operation comfort of surgery.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a hydraulically adaptive adjustable safety step stool. Background Technology

[0002] During surgical procedures, surgeons frequently need to adjust their standing height according to changes in the surgical site, patient position, and operating table height to achieve the best operational field of vision and a comfortable posture. Traditional step stools have significant drawbacks: First, their height adjustment is mostly manual and step-by-step, unable to be synchronized with the electric operating table. When the operating table is raised or lowered, the surgeon's foot support surface cannot adjust synchronously, leading to inconvenience and increased fatigue. Second, existing step stools have a rigid structure. When using double steps to meet different height requirements, the center of gravity shift often exceeds 120mm, greatly increasing the risk of intraoperative slippage accidents (statistically, the accident rate increases by 7.3 times). In addition, the traditional iron base rigidly contacts the ground and lacks an effective shock absorption module. In delicate operations such as microsurgery, the instrument vibration transmission rate is as high as 65%, seriously affecting the accuracy and stability of the surgical procedure.

[0003] Therefore, there is an urgent need for a new type of treadmill device that can achieve real-time stepless adjustment during surgery, has high stability, and meets hospital infection control standards. Utility Model Content

[0004] To overcome the above shortcomings, a hydraulically adaptive adjustable safety step stool is provided. Through hydraulic drive and intelligent control system, it realizes real-time, stable and stepless adjustment of the step height. At the same time, through optimized mechanical structure and material selection, the stability and safety of the equipment are significantly improved.

[0005] This utility model is implemented as follows: This utility model provides a hydraulically adaptive adjustable safety step stool, including a support base 100, a footboard platform 200 and a lifting mechanism 300.

[0006] The support base 100 has a first slide rail 110 on it.

[0007] The pedal platform 200 has a second slide rail 210 on it.

[0008] The lifting mechanism 300 includes a drive element 310, a push shaft 320, and at least one set of X-shaped support rod assemblies 330.

[0009] The push shaft 320 is slidably disposed within the first slide rail 110.

[0010] The drive component 310 is mounted on the support base 100 and connected to the push shaft 320, and is used to drive the push shaft 320 to reciprocate along the length direction of the first slide rail 110.

[0011] The support rod assembly 330 includes a first support rod 331 and a second support rod 332 that are hinged together at the middle.

[0012] The first end of the first support rod 331 is hinged to the support base 100, and its second end is slidably disposed in the second slide rail 210.

[0013] The first end of the second support rod 332 is hinged to the push shaft 320, and the second end is hinged to the pedal platform 200.

[0014] In one embodiment of this utility model, the first slide rail 110 and the second slide rail 210 are both straight slide rails and are arranged parallel to each other.

[0015] In one embodiment of this utility model, the driving component 310 is a hydraulic driving device.

[0016] In one embodiment of this utility model, the support rod assembly 330 consists of two sets, symmetrically arranged on both sides of the push shaft 320.

[0017] In one embodiment of this utility model, the surface of the pedal platform 200 is provided with an anti-slip structure.

[0018] In one embodiment of this utility model, the anti-slip structure is raised anti-slip dots or anti-slip patterns.

[0019] In one embodiment of the present invention, when the driving member 310 drives the push shaft 320 to move, it causes the first end of the second support rod 332 to slide along the first slide rail 110, and then drives the pedal platform 200 to move up and down relative to the support base 100 by changing the angle of the first support rod 331 and the second support rod 332 that are hinged to each other.

[0020] In one embodiment of this utility model, a control unit and an attitude sensor are also included. The attitude sensor is used to monitor the real-time attitude of the step stool. The control unit controls the working state of the drive unit 310 according to the signal from the attitude sensor to achieve active anti-tipping adjustment.

[0021] In one embodiment of the present invention, the bottom of the support base 100 is provided with an active anti-tipping stabilization system, the system including liftable stabilizing legs and actuators for driving the legs.

[0022] The beneficial effects of this utility model are: the hydraulic adaptive adjustable safety step stool obtained by the above design uses a hydraulic system to provide power to drive the linear motion of the push shaft, thereby converting the horizontal thrust into the angle change of the scissor-type support rod group, and finally realizing the vertical lifting and lowering motion of the step platform.

[0023] 1. It achieves highly real-time, precise, and stepless adaptive adjustment during surgery, greatly improving surgeon comfort and surgical efficiency.

[0024] This invention employs a closed hydraulic drive system with a fast response speed (full stroke lifting ≤20 seconds), and a large and stable output force, capable of overcoming the surgeon's weight load and achieving true stepless speed regulation. When the operating table height changes, the surgeon or assistant can immediately adjust the platform height to match, avoiding the awkward posture and inconvenience caused by traditional step-by-step adjustments or lack of linkage, reducing surgeon fatigue, and ensuring the continuity of the surgical procedure.

[0025] 2. The structural stability and safety have been revolutionaryly improved, effectively eliminating the risk of overturning and sliding.

[0026] 3. Through the unique dual-slide track and scissor brace linkage design (the sliding end of the first support rod is on the pedal slide track, and the driving end of the second support rod is connected to the push shaft), the change of the center of gravity during the lifting process is more controllable, and the support base remains stable.

[0027] More importantly, it integrates an active anti-tipping stabilization system (six-axis gyroscope + control unit + height-adjustable stabilizing legs). This system can monitor minute changes in the posture of the step stool in real time and actively intervene when it detects a risk of instability (such as center of gravity shift or external impact). It can either compensate for the posture by fine-tuning the hydraulic drive or expand the support area by extending the stabilizing legs, thereby actively preventing the equipment from tipping over and nipping safety accidents in the bud. This solves the huge hidden danger of center of gravity shift caused by stacked steps.

[0028] 3. Significantly improves operational precision, especially suitable for precision surgical procedures.

[0029] The anti-slip and shock-absorbing pads at the bottom of the support base and the overall rigid structural design effectively isolate ground vibrations and swaying caused by the surgeon's slight movements. Compared to the 65% vibration transmission rate of traditional iron platforms, this design significantly reduces the transmission of vibration to the platform, ensuring the stability and precision of the surgeon's hands, especially during delicate procedures such as microsurgery and neurosurgery.

[0030] 4. It has a high degree of intelligence, which is in line with the development trend of modern digital operating rooms.

[0031] This invention integrates sensors, a control unit, and hydraulic drive to form an intelligent closed-loop control system. It not only responds to manual commands but also automatically senses the status and makes adjustments, achieving a leap from a "manual tool" to "intelligent equipment." It can be linked with other equipment in future digital operating rooms, exhibiting high scalability.

[0032] 5. Fully meets the infection control requirements for medical environments.

[0033] The design of the support base and pedal platform eliminates cleaning dead spots and facilitates disinfection. Made of corrosion-resistant and easy-to-clean materials such as stainless steel, it fully complies with the stringent standards of the "Technical Specification for Clean Operating Room Construction in Hospitals" (GB 50333-2013), reducing the risk of hospital-acquired infections.

[0034] In summary, this invention, through ingenious mechanical structure design, efficient hydraulic drive system, and intelligent control strategy, works synergistically to successfully solve the three core pain points of traditional high stools: "inconvenient adjustment," "poor stability," and "impact on precision." It provides an intraoperative platform solution that combines adaptability, ultimate safety, and excellent user experience, possessing extremely high clinical application value and market prospects. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the unused structure of a hydraulically adaptive adjustable safety step stool provided by an embodiment of this utility model;

[0037] Figure 2 This is a schematic diagram of the structure of a hydraulically adaptive adjustable safety step stool in use, provided for an embodiment of this utility model.

[0038] In the diagram: 100 - Support base; 110 - First slide rail; 200 - Pedal platform; 210 - Second slide rail; 300 - Lifting mechanism; 310 - Drive component; 320 - Push shaft; 330 - Support rod assembly; 331 - First support rod; 332 - Second support rod. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] Example

[0047] Please see Figure 1 and Figure 2 This utility model provides a technical solution: a hydraulically adaptive adjustable safety step stool, including a support base 100, a footboard platform 200 and a lifting mechanism 300.

[0048] A support base 100, with a first slide rail 110, is made of stainless steel for easy cleaning and disinfection, and meets medical standards. Its four corners are equipped with locking casters and height-adjustable active anti-tipping stabilizing feet (not fully shown in the figure). During movement, the casters shift position, and after positioning, the stabilizing feet extend to form stable contact with the ground, preventing slippage in any direction. A pedal platform 200, with a second slide rail 210, is also included. A lifting mechanism 300 includes a drive unit 310, a push shaft 320, and at least one set of X-shaped support rod assemblies 330. The push shaft 320 is slidably disposed within the first slide rail 110. The drive unit 310 is mounted on the support base 100 and connected to the push shaft 320, driving the push shaft 320 to reciprocate along the length of the first slide rail 110. The support rod assembly 330 includes a first support rod 331 and a second support rod 332 hinged together at their center. The first end of the first support rod 331 is hinged to the support base 100, and its second end is slidably disposed in the second slide rail 210. The first end of the second support rod 332 is hinged to the push shaft 320, and its second end is hinged to the pedal platform 200. Specifically, the lifting mechanism 300 is the core component, including a hydraulic drive device, a push shaft 320, and at least one set of X-shaped support rod assemblies 330 (scissor braces). The hydraulic drive device preferably uses a hydraulic rod (response time < 10ms) to eliminate speed fluctuations caused by load changes and ensure smooth lifting. The push shaft 320 is connected to the output end of the drive device and is slidably housed within the first slide rail 110 of the support base 100. The support rod assembly 330 includes a first support rod 331 and a second support rod 332, which are hinged to each other at the middle by a pin to form an X-shaped structure.

[0049] In specific configuration: both the first slide rail 110 and the second slide rail 210 are straight slide rails and are arranged parallel to each other, which better allows the first support rod 331 and the second support rod 332 to slide simultaneously without obstruction, improving sliding efficiency. Furthermore, the support rod assemblies 330 are in two sets, symmetrically arranged on both sides of the push shaft 320, making the step stool more stable and distributing force evenly. The surface of the pedal platform 200 is provided with an anti-slip structure, which consists of raised anti-slip points or anti-slip patterns, increasing the friction of the foot contact and preventing slippage.

[0050] Another embodiment also includes a control unit and a posture sensor. The posture sensor monitors the real-time posture of the step stool, and the control unit controls the working state of the drive component 310 based on the signal from the posture sensor to achieve active anti-tipping adjustment. When the control system receives a height adjustment command, the hydraulic drive device is activated, pushing the push shaft 320 forward or backward along the first slide rail 110. The push shaft 320 drives the lower end of the second support rod 332 to move, thereby forcing the included angle of the entire support rod assembly 330 to increase or decrease, ultimately smoothly raising or lowering the step platform 200, achieving stepless precision height adjustment. The entire system responds quickly, operates smoothly, and has stepless speed regulation, perfectly adapting to changes in the height of the operating table during surgery.

[0051] Specifically, the working principle of this hydraulically adaptive adjustable safety step stool is as follows:

[0052] 1. Power start:

[0053] When the operator issues a lifting command via the control system (such as a foot switch or handheld remote control), the hydraulic drive unit is activated, generating a high-pressure hydraulic oil flow. A digital pressure compensation valve ensures stable output pressure, maintaining a constant lifting speed without fluctuations regardless of changes in the load on the platform (such as changes in the operator's weight).

[0054] 2. Power transmission and motion conversion:

[0055] The linear thrust generated by the hydraulic oil acts on the push shaft 320, pushing it to make precise linear reciprocating motion along the first slide rail 110 on the support base 100.

[0056] When it is necessary to raise the pedal platform: the hydraulic drive unit pushes the push shaft 320 forward (away from the drive end) to slide.

[0057] When it is necessary to lower the pedal platform: the hydraulic drive unit pulls the push shaft 320 backward (closer to the drive end) to slide.

[0058] 3. Mechanical linkage and angle change:

[0059] The movement of the push shaft 320 directly drives the first end of the second support rod 332, which is hinged to it, to move accordingly. Since the middle part of the second support rod 332 is hinged to the first support rod 331 by a pin (forming the apex of an X-shape), and the first end of the first support rod 331 is hinged and fixed to the support base 100, the horizontal movement of the push shaft 320 forces the shape of the entire support rod assembly 330 to change.

[0060] Lifting process: The push shaft 320 moves forward, pushing the first end of the second support rod 332 forward. Since the second end of the second support rod 332 is hinged to the pedal platform 200, this thrust forces the X-shaped angle to increase, thereby lifting the pedal platform 200 upward. At the same time, the second end of the first support rod 331 slides backward within the second slide rail 210 of the pedal platform 200 to adapt to the change in angle.

[0061] Lowering process: The push shaft 320 moves backward, pulling the first end of the second support rod 332 backward. This reduces the angle of the X-shape, allowing the pedal platform 200 to descend smoothly under gravity and system control. The second end of the first support rod 331 slides forward within the second slide rail 210.

[0062] 4. Final output:

[0063] The opening and closing angle of the support rod assembly 330° directly determines the distance between the pedal platform 200 and the support base 100, thereby achieving stepless and stable vertical lifting and lowering motion.

[0064] 5. Stability and security (collaborative work):

[0065] The active anti-tipping stabilization system operates continuously throughout the entire lifting and lowering process and during static support.

[0066] The six-axis gyroscope monitors the overall posture of the step stool in real time (such as whether it tilts due to uneven ground or shift in the center of gravity of the person).

[0067] Once a posture change exceeding the safety threshold is detected, the control unit will immediately calculate and instruct the hydraulic drive to make fine adjustments (such as slightly raising or lowering one side or adjusting the overall height to change the center of gravity), or instruct the adjustable and stabilizing outriggers on the support base 100 to extend to increase the support surface, actively resist the overturning tendency, and ensure the operator's safety.

[0068] The anti-slip and shock-absorbing pads on the bottom of the support base 100 and the anti-slip points on the surface of the pedal platform 200 work together to passively provide additional friction and shock absorption, preventing slippage and suppressing vibration transmission.

[0069] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulically adaptive adjustable safety step stool, characterized in that, include A support base (100) is provided with a first slide rail (110); A pedal platform (200) is provided with a second slide rail (210); The lifting mechanism (300) includes a drive element (310), a push shaft (320), and at least one set of X-shaped support rod assemblies (330); The push shaft (320) is slidably disposed within the first slide rail (110); The drive unit (310) is mounted on the support base (100) and connected to the push shaft (320), and is used to drive the push shaft (320) to reciprocate along the length direction of the first slide rail (110); The support rod assembly (330) includes a first support rod (331) and a second support rod (332) that are hinged together at the middle. The first end of the first support rod (331) is hinged to the support base (100), and its second end is slidably disposed in the second slide rail (210); The first end of the second support rod (332) is hinged to the push shaft (320), and the second end is hinged to the pedal platform (200).

2. The hydraulically adaptive adjustable safety step stool according to claim 1, characterized in that, The first slide (110) and the second slide (210) are both straight slides and are arranged parallel to each other.

3. The hydraulically adaptive adjustable safety step stool according to claim 1, characterized in that, The drive component (310) is a hydraulic drive device.

4. The hydraulically adaptive adjustable safety step stool according to claim 1, characterized in that, The support rod assembly (330) consists of two sets, symmetrically arranged on both sides of the push shaft (320).

5. A hydraulically adaptive adjustable safety step stool according to claim 1, characterized in that, The surface of the pedal platform (200) is provided with an anti-slip structure.

6. A hydraulically adaptive adjustable safety step stool according to claim 5, characterized in that, The anti-slip structure consists of raised anti-slip dots or anti-slip patterns.

7. A hydraulically adaptive adjustable safety step stool according to claim 1, characterized in that, When the drive member (310) drives the push shaft (320) to move, it causes the first end of the second support rod (332) to slide along the first slide rail (110), and then drives the pedal platform (200) to move up and down relative to the support base (100) by changing the angle of the first support rod (331) and the second support rod (332) that are hinged to each other.

8. A hydraulically adaptive adjustable safety step stool according to claim 1, characterized in that, It also includes a control unit and an attitude sensor, the attitude sensor being used to monitor the real-time attitude of the step stool, and the control unit controlling the working state of the drive unit (310) based on the signal from the attitude sensor to achieve active anti-tipping adjustment.

9. A hydraulically adaptive adjustable safety step stool according to claim 1, characterized in that, The bottom of the support base (100) is provided with an active anti-tipping stabilization system, which includes liftable stabilizing legs and actuators that drive the legs to move.

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