Waist bridge lifting mechanism and operating bed

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a waist bridge lifting mechanism and an operating bed. The waist bridge lifting mechanism comprises a driving assembly, a parallelogram connecting rod assembly and a mounting plate; the driving assembly, the parallelogram connecting rod assembly and the mounting plate are arranged in a side frame of the operating bed, and an opening is formed in the frame, so that the connecting rod assembly can vertically ascend and descend through the opening. The mechanism is small in size and stable in movement, and the inclination angle of the supporting plate can be automatically adjusted according to the state of a patient during movement.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically a lumbar bridge lifting mechanism and an operating table. Background Technology

[0002] Operating tables or beds include lumbar bridge lifting devices that elevate the patient's lower back, facilitating surgery on the lumbar region. Chinese utility model patent CN221384176U discloses a lumbar bridge linear linkage mechanism, consisting of a hydraulic cylinder and a linkage assembly. One end of the hydraulic cylinder is connected to a frame, and the other end is connected to a linkage mechanism, which in turn is connected to the frame and the lumbar bridge. The hydraulic cylinder drives the linkage to raise and lower the lumbar bridge, and the left and right sides of the lumbar bridge employ an asymmetrical structure to prevent reverse rotation. Chinese utility model patent CN216258079U discloses a lumbar bridge lifting mechanism, also composed of a hydraulic cylinder and a linkage mechanism. This mechanism uses a hydraulic cylinder to drive a linkage, which in turn drives another linkage to raise and lower the lumbar bridge. Both of these mechanisms can achieve lumbar bridge raising and lowering, but their linkage mechanisms inherently occupy significant space, requiring large openings in the frame or placement outside the frame, increasing the possibility of foreign objects entering the frame or interfering with the mechanism.

[0003] Existing operating table lumbar bridge lifting mechanisms have the problems of being bulky and not being able to automatically adjust their posture according to the patient's condition. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technology and provide a lumbar bridge lifting mechanism. This mechanism is small in size, moves smoothly, and can automatically adjust the tilt angle of the support plate according to the patient's condition during movement.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lumbar bridge lifting mechanism includes a drive assembly, a parallelogram linkage assembly, and a mounting plate. The drive assembly, parallelogram linkage assembly, and mounting plate are disposed within the side frame of an operating table, and an opening is provided on the frame so that the linkage assembly can be vertically lifted through the opening.

[0007] This utility model further provides an operating table or operating chair that adopts the above-mentioned lifting mechanism, and the above-mentioned waist bridge lifting mechanism can be installed in the frame of one or both sides of the operating table or operating chair.

[0008] Compared with the prior art, the advantages of this utility model are:

[0009] 1. The linkage mechanism utilizes a parallelogram structure, ensuring definite movement, increasing traction power, and reducing the spacing between the links as the waist bridge descends, eventually overlapping, thus minimizing space requirements. The linkage mechanism is compact, provides deterministic and smooth motion, and enhances load-bearing capacity.

[0010] 2. The top surface of the support plate is irregularly shaped, such as arc or boss. When used in conjunction with the support plate, it can automatically adjust the angle of the lumbar bridge within a certain angle according to the load, thereby improving patient comfort. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of the waist bridge lifting mechanism;

[0012] Figure 2 This is a schematic diagram showing the connection between the support plate and the tray;

[0013] Figure 3 This is a schematic diagram showing the lumbar bridge lifting mechanism installed in the operating table frame;

[0014] Figure 4 This is a structural diagram of the waist bridge lifting mechanism in the raised state;

[0015] Figure 5 This is a schematic diagram of the waist bridge lifting mechanism in its lowered state;

[0016] Reference numerals: 1. Drive assembly; 2. First link; 3. Mounting plate; 4. Second link; 5. Third link; 6. Fourth link; 7. Support plate; 8. Support plate; 9. Contact surface; 10. Frame. Detailed Implementation

[0017] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0018] Example 1

[0019] like Figure 1 As shown, a waist bridge lifting mechanism includes a drive assembly 1, a parallelogram linkage assembly, and a mounting plate 3.

[0020] The mounting plate 3 is provided with mounting holes and sliding grooves;

[0021] The parallelogram linkage assembly includes a first link 2, a second link 4, a third link 5, and a fourth link 6;

[0022] One end of the first connecting rod 2 is slidably connected to the sliding groove, and this connection point is defined as point A; the other end is rotatably connected to one end of the third connecting rod 5, and this rotatably connected position is also rotatably connected to the drive rod head of the drive assembly 1, and this connection point is defined as point E;

[0023] One end of the second connecting rod 4 is rotatably connected to the mounting hole, and this connection point is defined as point B; the other end is rotatably connected to one end of the fourth connecting rod 6, and this connection point is defined as point D; the other end of the fourth connecting rod 6 is fixedly connected to the support plate 7.

[0024] The other end of the third link 5 is rotatably connected to the fourth link 6, and this connection point is defined as point F; the first link 2 and the second link 4 intersect and are rotatably connected at the intersection point, and this connection point is defined as point C;

[0025] Points C, D, E, and F are the four vertices of a parallelogram. Point F is located between point D on the fourth link 6 and the connection point between the fourth link 6 and the support plate 7. The position of point F can be adjusted between these two connection points as needed.

[0026] like Figure 2 As shown, the support plate 7 is connected to the support plate 8, and the contact surface 9 where the support plate 7 and the support plate 8 are connected is an arc-shaped surface. This arc-shaped surface allows the support plate to swing freely within a certain angle. During the lifting and lowering of the lumbar bridge, it can automatically adjust according to the patient's weight, thereby improving the patient's comfort.

[0027] The rotatable connection is a pin connection.

[0028] The drive assembly is a hydraulic cylinder, and the drive rod head is a piston rod head.

[0029] like Figure 3 As shown, the drive assembly 1, the parallelogram linkage assembly, and the mounting plate 3 are disposed within the side frame 10 of the operating table, and an opening is provided on the frame so that the linkage assembly can be vertically raised and lowered through the opening.

[0030] like Figure 1 and Figure 4 As shown, the mounting plate 3 is fixed inside the frame 10, with points A, B and the fixed end of the drive component in the frame, and point A in the middle.

[0031] like Figure 2 As shown, the top of the support plate 7 is an irregular shape, which can be an arc surface or a raised surface, allowing the support plate 8 to swing freely within a certain angle. During the lifting and lowering of the lumbar bridge, it can automatically adjust according to the patient's weight, thereby improving the patient's comfort.

[0032] Links 2, 4, 5, and 6 form a parallelogram mechanism with definite motion positions and minimal space requirements. Figure 3 As shown, the lifting and lowering of the linkage mechanism can be achieved simply by opening a small opening in the frame 10.

[0033] like Figure 4As shown, the drive assembly 1 drives the first link 2 and the third link 5 to move to the right. The third link 5 slides in the sliding groove of the mounting plate 3, causing the second link 4 to rotate counterclockwise. The first link 2, the second link 4, the third link 5 and the fourth link 6 form a parallelogram mechanism. The first link 2 is always parallel to the fourth link 6, so the fourth link 6 rotates clockwise to realize the lifting of the pallet. The maximum lifting distance is 125mm.

[0034] like Figure 5 As shown, the drive assembly 1 drives the first link 2 and the third link 5 to move to the left, the parallelogram assembly is lowered to the lowest position, and the support plate 7 is in contact with the frame 10.

[0035] The support plate 8 of this utility model is connected to the waist bridge of the operating table or operating table. The raising or lowering of the support plate 8 drives the raising or lowering of the waist bridge.

[0036] Example 2

[0037] An operating table that includes the lumbar bridge lifting mechanism described in Example 1.

[0038] For any content not described in detail in this utility model, conventional technical knowledge in the field can be used.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A waist bridge lifting mechanism characterized by, The waist bridge lifting mechanism includes a drive assembly, a parallelogram linkage assembly, and a mounting plate; The mounting plate is provided with mounting holes and sliding grooves; The parallelogram linkage assembly includes a first link, a second link, a third link, and a fourth link; One end of the first connecting rod is slidably connected to the sliding groove, and this connection point is defined as point A; the other end is rotatably connected to one end of the third connecting rod, and this rotatably connected position is also rotatably connected to the drive rod head of the drive assembly, and this connection point is defined as point E; One end of the second connecting rod is rotatably connected to the mounting hole, and this connection point is defined as point B; the other end is rotatably connected to one end of the fourth connecting rod, and this connection point is defined as point D; the other end of the fourth connecting rod is fixedly connected to the support plate. The other end of the third link is rotatably connected to the fourth link, and this connection point is defined as point F; the first link and the second link intersect and are rotatably connected at the intersection point, and this connection point is defined as point C; Points C, D, E, and F are the four vertices of the parallelogram.

2. The waist bridge lifting mechanism according to claim 1, characterized by, The support plate is connected to the tray, and the contact surface between the support plate and the tray is an arc-shaped surface.

3. The waist bridge lifting mechanism according to claim 1, characterized by, The rotating connection is a hinge connection, pin connection, pin connection, or bearing connection.

4. The waist bridge lifting mechanism according to claim 1, characterized by, The drive assembly is a hydraulic cylinder, and the drive rod head is a piston rod head.

5. The waist bridge lifting mechanism according to claim 1, wherein The drive assembly, parallelogram linkage assembly, and mounting plate are disposed within the side frame of the operating table, and an opening is provided on the frame so that the linkage assembly can be vertically raised and lowered through the opening.

6. The waist bridge lifting mechanism according to claim 5, characterized in that, The mounting plate is fixed inside the frame, and points A, B and the fixed end of the drive component are in a straight line inside the frame, with point A in the middle.

7. An operating bed, characterized in that The operating table includes the lumbar bridge lifting mechanism as described in any one of claims 1-6.

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