Hydraulic scissor lift structure for a surgical table

Abstract

This utility model discloses a hydraulic lumbar support structure for an operating table. A hydraulic cylinder is hinged within the active base. Both the active and driven bases have built-in guide mechanisms and linkage transmission structures. The linkage transmission structure within the active base is hinged to the hydraulic cylinder. The two linkage transmission structures are connected via a long shaft and are hinged together to a top plate for supporting the patient's lumbar region. Each linkage transmission structure is slidably connected to its corresponding guide mechanism. This utility model achieves precise adjustment of the top plate's position by using a hydraulic cylinder to precisely control the piston rod's movement. It can support the patient's lumbar region to a suitable height and angle according to surgical needs, creating more favorable positioning conditions for the operation and improving its convenience and accuracy. The long shaft is located at the rotation point of the short rod, directly enabling synchronous rotation of the two connecting rods, significantly simplifying the mechanism design, reducing costs, and minimizing wear and error sources.

Description

Technical Field

[0001] This utility model relates to a hydraulic lumbar bridge structure for an operating table. Background Technology

[0002] In surgical procedures, the operating table needs to provide precise support and position adjustment for different surgical procedures. The lumbar bridge structure is a key component for adjusting the position of the patient's waist. Traditional lumbar bridges are often manual structures, driven by gears and lead screw nuts. These structures suffer from problems such as poor adjustment precision, insufficient stability, and cumbersome and laborious operation, affecting the convenience of surgical procedures and the patient experience. Therefore, there is an urgent need for a hydraulic lumbar bridge structure with a more reasonable structure and more precise and stable adjustment. Utility Model Content

[0003] To address the shortcomings of the existing technology, this invention provides a hydraulic lumbar support structure for an operating table. This invention uses a hydraulic cylinder to precisely control the movement of the piston rod, and in conjunction with the sliding and rotation of the connecting rod within the channel, it enables minute and precise positional adjustments to the top plate. According to the needs of the surgical procedure, the patient's lumbar region can be supported to a suitable height and angle, creating more favorable positioning conditions for the surgical procedure and improving the convenience and accuracy of the procedure.

[0004] To achieve the above technical objectives, the present invention adopts the following technical solution: a hydraulic lumbar bridge structure for an operating table, comprising an active base and a driven base, wherein a hydraulic cylinder is hinged within the active base, and both the active base and the driven base have built-in guide mechanisms and are equipped with linkage transmission structures. The linkage transmission structure located within the active base is hinged to the hydraulic cylinder, and the two linkage transmission structures are connected by a long shaft transmission. The two linkage transmission structures are jointly hinged to a top plate for supporting the patient's waist, and the two linkage transmission structures are slidably connected to the corresponding guide mechanisms.

[0005] The linkage transmission structure includes a short rod and a long rod. The first end of the short rod is hinged to the middle of the long rod. The middle of the short rod is hinged to or suspended from the piston rod of the hydraulic cylinder. The second end of the short rod has a mounting hole. The mounting hole is hinged to the driving base or the driven base through a hinge shaft. The mounting hole is fixedly connected to the end of the long shaft, so that the long shaft and the second end of the short rod share a common rotation point. The first end of the long rod is hinged to the top plate, and the second end of the long rod is connected to the guide mechanism.

[0006] The middle part of the short rod is a protruding structure extending outward from the middle part of the short rod.

[0007] A pulley is provided at the second end of the long rod, and the guide mechanism adopts a slide rail, in which the pulley slides and moves in a straight line.

[0008] The lower surface of the top plate is provided with two hinge seats, which are hinged to the first end of the long rod.

[0009] The active base and the driven base have the same structure, both including a U-shaped outer shell, a base plate, a front cover, and a rear cover. The guide mechanism is fixed to the base plate, and the U-shaped outer shell has a through hole for the linkage transmission structure to move.

[0010] The U-shaped housing has a first hinge hole for mounting a first hinge shaft. The fixed end of the hydraulic cylinder is hinged to the first hinge shaft. The U-shaped housing also has a second hinge hole for mounting a second hinge shaft, which is connected to the long shaft.

[0011] The top of the U-shaped housing is also provided with a connection hole, and a connection plate is also included. The two ends of the connection plate are respectively connected to the connection holes of the active base and the driven base.

[0012] In summary, this utility model achieves the following technical effects:

[0013] 1. High adjustment precision: The piston rod movement is precisely controlled by the hydraulic cylinder, and the sliding and rotation of the connecting rod in the channel can achieve small and precise position adjustment of the top plate. According to the needs of surgical operation, the patient's waist can be supported to a suitable height and angle, creating more favorable positional conditions for surgical operation and improving the convenience and accuracy of surgical operation.

[0014] 2. High structural stability: The high-strength connecting rods and stable base frame ensure the stability of the entire lumbar bridge structure under stress, making it less prone to deformation and swaying. During surgery, it can continuously and stably support the patient's lower back, preventing structural instability from affecting surgical procedures and improving surgical safety.

[0015] 3. Improved patient experience: The ergonomic design and flexible antibacterial surface of the top plate conform to the patient's body curves, reducing local pressure and lowering the risk of bacterial growth, thus improving patient comfort and hygiene during the procedure.

[0016] 4. Good maintenance convenience: The modular and detachable design of the base frame and the reasonable connection between the components make the inspection and replacement of components such as cylinders and connecting rods more convenient, reducing equipment maintenance time and costs, and ensuring the long-term stable use of the operating table.

[0017] 5. Wide adaptability: The hydraulic lumbar bridge structure can be flexibly adjusted in size and material parameters according to the design requirements of different operating tables, and can be adapted to various models and functions of hydraulic operating tables, which is conducive to its promotion and application in the field of medical devices. Attached Figure Description

[0018] Figure 1 It is a hydraulic lumbar bridge structure for an operating table;

[0019] Figure 2 yes Figure 1 Side view;

[0020] Figure 3 yes Figure 1 A schematic diagram of the decomposition process;

[0021] Figure 4 yes Figure 3 Partial schematic diagram;

[0022] Figure 5 This is a schematic diagram showing the connection between the top plate and the long rod;

[0023] Figure 6 This is a schematic diagram of the base. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 element 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.

[0027] 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.

[0028] 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 mechanical connection or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] Example:

[0031] Figure 1 It is a hydraulic lumbar support structure for an operating table. Figure 2 yes Figure 1 Side view, Figure 3 yes Figure 1 An exploded view shows an active base 1 and a driven base 8. A hydraulic cylinder 2 is hinged inside the active base 1. Both the active base 1 and the driven base 8 have built-in guide mechanisms 6 and linkage transmission structures 3. The linkage transmission structure 3 located in the active base 1 is hinged to the hydraulic cylinder 2. The two linkage transmission structures 3 are connected by a long shaft 4. The two linkage transmission structures 3 are hinged together to a top plate 5 for supporting the patient's waist. The two linkage transmission structures 3 are slidably connected to the corresponding guide mechanisms 6.

[0032] This utility model uses a hydraulic cylinder as a power source. The cylinder contains components such as a piston and piston rod, and can drive the piston rod to perform linear reciprocating motion through changes in hydraulic oil pressure. The cylinder is installed within the base frame of the operating table's lumbar bridge, ensuring that the power output direction matches the connecting rod's movement trajectory, resulting in high precision and good stability.

[0033] Figure 4 yes Figure 3In a partial schematic diagram, the linkage transmission structure 3 includes a short rod 31 and a long rod 32. The first end 311 of the short rod 31 is hinged to the middle part 323 of the long rod 32. The middle part 312 of the short rod 31 is hinged to or suspended from the piston rod of the hydraulic cylinder 2. The second end 313 of the short rod 31 has a mounting hole, which is hinged to the driving base 1 or the driven base 8 through a hinge shaft. The mounting hole is fixedly connected to the end of the long shaft 4, so that the long shaft 4 and the second end 313 of the short rod share a common rotation point. The first end 321 of the long rod 32 is hinged to the top plate 5, and the second end 322 of the long rod 32 is connected to the guide mechanism 6.

[0034] The connecting rod of this invention is a rigid rod, with one end hinged to the piston rod of the hydraulic cylinder and capable of rotating around the hinge point; the other end cooperates with the guide mechanism 6, and when sliding along the guide mechanism 6, it can move linearly along the channel direction. Simultaneously, through its own rotation, it converts the linear power of the hydraulic cylinder into a lifting force on the top plate. The connecting rod is made of a high-strength alloy to ensure it does not deform under frequent stress, thus improving structural reliability.

[0035] This utility model is equipped with a long shaft 4 for connecting the left and right linkage mechanisms. The long shaft 4 is located at the rotation point of the short rod, which directly realizes the synchronous rotation of the linkages on both sides. This avoids the use of traditional gear synchronous transmission structures (such as bevel gears and dual-shaft linkages), greatly simplifies the mechanism design, reduces costs, reduces wear and error sources, and facilitates assembly and maintenance.

[0036] The middle part 312 of the short rod is a protruding structure extending outward from the middle of the short rod 31, which facilitates the connection with the oil cylinder and is relatively stable.

[0037] A pulley is provided at the second end 322 of the long rod, and the guide mechanism 6 adopts a slide rail. The pulley slides in the slide rail and makes linear motion to ensure stability during operation.

[0038] This utility model's linkage transmission structure employs a simplified design, where the long shaft connecting the left and right linkage mechanisms has its axis located at the rotation hinge point of the short rod. This layout allows power to be directly transmitted to the other side via the long shaft when the hydraulic cylinder drives one side of the short rod, achieving synchronous movement of both linkages. Compared to common gear synchronization transmission mechanisms in the prior art (such as bevel gear sets mounted on both sides or dual-motor coordinated drives), this design is structurally simpler, reduces the number of parts and installation accuracy requirements, effectively improves assembly efficiency and transmission stability, and helps control costs and reduce maintenance rates.

[0039] Figure 5This is a schematic diagram of the connection between the top plate 5 and the long rod. The lower surface of the top plate 5 is provided with two hinge seats 51, which are hinged to the first end 321 of the long rod. The hinge seat 51 has an arc-shaped groove 52, and the two end sidewalls of the arc-shaped groove 52 act as limiting plates to restrict the rotation angle of the long rod and prevent excessive movement.

[0040] The top plate of this utility model is a support component that comes into contact with the patient's body. It adopts an ergonomic arc-shaped design, and its surface is covered with a flexible, non-slip, and antibacterial material, which not only ensures effective support for the patient's waist but also improves patient comfort and hygiene. The inner wall of the arc-shaped groove 52 is equipped with a wear-resistant coating to reduce frictional loss during the sliding of the connecting rod and extend the service life of the component.

[0041] Figure 6 This is a schematic diagram of the base. The active base 1 and the driven base 8 have the same structure, both including a U-shaped shell, a base plate 11, a front cover 14, and a rear cover 15. The guide mechanism 6 is fixed to the base plate 11. The U-shaped shell has a through hole 16 for the linkage transmission structure 3 to move.

[0042] The lower end of the linkage transmission structure 3 is located inside the base, and the upper end extends out and is hinged to the top plate.

[0043] The U-shaped housing has a first hinge hole 18 for installing a first hinge shaft 12. The fixed end 21 of the hydraulic cylinder 2 is hinged to the first hinge shaft 12. The U-shaped housing also has a second hinge hole 19 for installing a second hinge shaft 13. The second hinge shaft 13 is connected to the long shaft 4.

[0044] Both ends of the long shaft 4 are fixedly connected to the second end 313 of the short rod. When the second end 313 of the short rod rotates, it can drive the long shaft 4 to rotate to achieve the transmission effect. It also works in conjunction with the second hinge shaft 13 to be hinged to the base, which restricts the position of the long shaft 4 and the second end 313 of the short rod and ensures the stability of the connecting rod movement.

[0045] The top of the U-shaped housing is also provided with a connection hole 17, and a connection plate 7 is also included. The two ends of the connection plate 7 are respectively connected to the connection holes 17 of the active base 1 and the driven base 8.

[0046] This utility model's base is used to accommodate and support components such as a connecting rod. It adopts a modular design, with each part being detachably connected via bolts, clips, etc., facilitating installation, maintenance, and component replacement. The frame is made of lightweight, high-strength steel, ensuring structural strength while reducing overall weight, which is beneficial for the handling and layout adjustment of the operating table.

[0047] Working principle:

[0048] When surgery requires adjusting the patient's lumbar position, the hydraulic system supplies pressurized oil to the cylinder. The piston inside the cylinder, under oil pressure, pushes the piston rod to extend or retract. The piston rod drives one end of a connecting rod, which rotates around its hinge point with the piston rod. The slider at the other end slides within a groove in the base plate. As the angle of the connecting rod changes, the top plate is gradually raised or lowered, achieving adjustable support for the patient's lumbar position at different heights and angles. During adjustment, the sliding of the connecting rod within the groove, combined with its rotation, allows for precise control of the top plate's displacement and posture, meeting the delicate requirements of surgical procedures for patient positioning.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A hydraulic lumbar bridge structure for an operating table, characterized in that: It includes an active base (1) and a driven base (8). The active base (1) is hinged with a hydraulic cylinder (2). Both the active base (1) and the driven base (8) are equipped with a guide mechanism (6) and a linkage transmission structure (3). The linkage transmission structure (3) located in the active base (1) is hinged to the hydraulic cylinder (2). The two linkage transmission structures (3) are connected by a long shaft (4). The two linkage transmission structures (3) are hinged together with a top plate (5) for lifting the patient's waist. The two linkage transmission structures (3) are slidably connected to the corresponding guide mechanism (6).

2. The hydraulic knee bridge structure of an operating table according to claim 1, wherein: The linkage transmission structure (3) includes a short rod (31) and a long rod (32). The first end (311) of the short rod (31) is hinged to the middle part (323) of the long rod (32). The middle part (312) of the short rod (31) is hinged to or suspended from the piston rod of the oil cylinder (2). The second end (313) of the short rod (31) is provided with a mounting hole. The mounting hole is hinged to the active base (1) or the driven base (8) through a hinge shaft. The mounting hole is fixedly connected to the end of the long shaft (4), so that the long shaft (4) and the second end (313) of the short rod share a common rotation point. The first end (321) of the long rod (32) is hinged to the top plate (5). The second end (322) of the long rod (32) is connected to the guide mechanism (6).

3. The hydraulic lumbar bridge structure for an operating table according to claim 2, characterized in that: The middle part (312) of the short rod is a protruding structure extending outward from the middle part of the short rod (31).

4. The hydraulic lumbar bridge structure for an operating table according to claim 2, characterized in that: The second end (322) of the long rod is provided with a pulley, and the guide mechanism (6) adopts a slide rail. The pulley slides in the slide rail and makes linear motion.

5. The hydraulic knee-break structure of a surgical table according to claim 2, wherein: The lower surface of the top plate (5) is provided with two hinge seats (51), which are hinged to the first end (321) of the long rod.

6. The hydraulic lumbar bridge structure for an operating table according to claim 1, characterized in that: The active base (1) and the driven base (8) have the same structure, both including a U-shaped shell, a base plate (11), a front cover (14), and a rear cover (15). The guide mechanism (6) is fixed to the base plate (11). The U-shaped shell has a through hole (16) for the linkage transmission structure (3) to move.

7. The hydraulic knee-break structure of a surgical table according to claim 6, wherein: The U-shaped housing has a first hinge hole (18) for installing a first hinge shaft (12). The fixed end (21) of the oil cylinder (2) is hinged to the first hinge shaft (12). The U-shaped housing also has a second hinge hole (19) for installing a second hinge shaft (13). The second hinge shaft (13) is connected to the long shaft (4).

8. The hydraulic knee-break structure of a surgical table according to claim 6, wherein: The top of the U-shaped housing is also provided with a connection hole (17) and a connection plate (7). The two ends of the connection plate (7) are respectively connected to the connection holes (17) of the active base (1) and the driven base (8).

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