Electric waist bridge device for operating bed

Abstract

The utility model discloses an electric waist bridge device for an operating bed, and belongs to the technical field of medical instruments. The manual rocker type waist bridge device overcomes the defect that in the prior art, a traditional manual rocker type waist bridge device wastes time and labor due to the fact that a handle is shaken manually. The main body structure comprises an operating bed support, a screw rod and a waist bridge plate, the upper end of the screw rod is connected with the waist bridge plate through a screw, and a limiting flange is installed at the lower end of the screw rod; an electric motor is installed at the lower end of the operating bed support through a fixing part, a transmission assembly is arranged in the fixing part, the middle of the screw penetrates through the operating bed support and the fixing part, and the output end of the electric motor is in transmission connection with the screw through the transmission assembly. The surgical instrument is mainly used in surgical operation environments such as clinical hepatobiliary surgery and kidney operation body positions.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an electric waist bridge device for an operating table. Background Art

[0002] Most of the waist bridge devices on the operating table on the market are mainly manual rocker type and electric hydraulic rod type. Among them, the manual rocker type is to realize the lifting and lowering of the waist bridge plate by turning the manual rocker and driving the worm gear; the electric hydraulic rod type is that the hydraulic system controls the extension and retraction of the hydraulic cylinder telescopic rod to realize the lifting and lowering of the waist bridge plate, which is simple to operate and saves time and effort.

[0003] However, the manual rocker type waist bridge device uses the rocker to shake the turbine to drive the worm. Although the failure rate is low, it requires manpower to shake the operating handle, which is time-consuming and labor-intensive, and the market feedback is poor. The electric hydraulic rod waist bridge device does not require manpower to operate, but the waist bridge lifting stroke is fixed (the stroke of the hydraulic push rod is not variable). Due to its limited installation space, if a higher lifting stroke is to be achieved, the bed structure needs to be changed, so there are certain limitations.

[0004] The above objectives may be achieved by using a linear actuator, but the limitations of the installation space need to be considered when selecting and traveling the linear actuator.

[0005] For example, a Chinese invention patent with application publication number CN 104306127 A discloses a waist bridge mechanism for an operating table, which transmits power to a lead screw by shaking a bevel gear through a handle, and a nut on the lead screw then pushes two levers to push the waist bridge out in parallel, thereby realizing the lifting and lowering of the waist bridge. Therefore, it has the following disadvantages: it is time-consuming and laborious to shake the handle by manpower, and if the handle is shaken when the patient is lying down, not only is the operation force large, but it is also easy to shake.

[0006] Another example is a Chinese utility model patent with authorization announcement number CN 218739467U that discloses a scissor-type lifting operating table waist bridge device, which is convenient for improving the bearing strength of the device by setting up multiple scissor-type arm groups. However, it has the disadvantage that during the lifting process, the two upper support blocks at the top and the two lower support blocks at the bottom gradually move closer to the middle. If the patient lies on the board, the two ends are prone to shaking and are unstable. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an electric waist bridge device for an operating table, which can realize the rising and falling of the waist bridge part of the operating table, meets the requirements of the clinical position during surgery on the patient's waist height, has the advantages of smooth operation, low noise, good load-bearing performance, high self-locking, etc., and is simpler, easy to operate, saves time and effort, and can be applied to most operating beds.

[0008] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0009] An electric waist bridge device for an operating bed comprises an operating bed support, a screw rod and a waist bridge plate, wherein the upper end of the screw rod is connected to the waist bridge plate via a screw, and a limiting flange is installed at the lower end; an electric motor is installed at the lower end of the operating bed support via a fixing piece, a transmission assembly is arranged in the fixing piece, the middle of the screw rod passes through the operating bed support and the fixing piece, and the output end of the electric motor is transmission-connected to the screw rod via the transmission assembly.

[0010] Preferably, the transmission assembly includes a gear shaft and an output bevel gear installed inside the fixing member, the output shaft of the electric motor is arranged inside the fixing member, and an input bevel gear is arranged on the output shaft, the input bevel gear is meshed with the bevel gear 1 on the gear shaft, the bevel gear 2 on the gear shaft is meshed with the outer teeth of the output bevel gear, the screw rod passes through the middle of the output bevel gear and the fixing member, and the screw rod is connected to the output bevel gear.

[0011] Preferably, an internal thread is provided in the middle of the output helical gear, and the screw rod is threadably connected to the output helical gear via the internal thread.

[0012] Preferably, the input bevel gear and the output shaft are an integral structure.

[0013] Preferably, a transfer block is provided at the upper end of the screw rod, the transfer block is installed in a mounting groove on the waist bridge plate, and the upper end circumference of the screw rod is connected to the waist bridge plate through the transfer block.

[0014] Preferably, an internal threaded hole is provided at the upper end of the screw rod, and the screw is threadedly connected to the screw rod through the internal threaded hole.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The function of the adapter block is to prevent the screw from rotating during the lifting process, which will affect the transmission effect. The adapter block is embedded in the waist bridge plate, which has a slot design that can be clamped on the top of the screw. The three are connected by screws, which can limit the rotation of the screw and avoid wear on the waist bridge plate;

[0017] 2. The function of the limit flange is to prevent the screw from coming out of the upper part of the operating table bracket to avoid malfunction;

[0018] 3. The function of the fixing part is to fix the electric motor on the operating table bracket. During use, when the height of the waist bridge needs to be adjusted, the waist bridge control button on the operating table controller can be pressed, and then the control system will drive the electric motor to rotate forward or reverse, and transmit it to the screw through the transmission component, so that the screw makes corresponding lifting and lowering movements to achieve the purpose of lifting and lowering the waist bridge board to meet clinical needs;

[0019] 4. Compared with the manual control device, its operation is simpler, time-saving and labor-saving, and the work efficiency is higher; the two screws have a high degree of synchronization to ensure that the waist bridge plate is always in a horizontal state; at the same time, it has excellent load-bearing performance, the maximum load can reach 100 kg, and can achieve a high degree of self-locking, stable operation, and is not constrained by space. The invention can be further expanded and upgraded as needed;

[0020] To sum up, the utility model can realize the rising and falling of the waist bridge part on the operating table, which meets the requirements of the patient's waist height in the clinical position during surgery. It has the advantages of smooth operation, low noise, good load-bearing performance, and high self-locking. It is simpler, easy to operate, saves time and effort, and can be applied to most operating beds. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the transmission component in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the screw rod and the waist bridge plate when connected in the utility model.

[0024] In the figure: 1. Operating table bracket; 2. Fixing part; 3. Electric motor; 4. Limiting flange; 5. Screw; 6. Waist bridge plate; 7. Adapter block; 8. Output shaft; 9. Bevel gear 1; 10. Bevel gear 2; 11. Gear shaft; 12. Output bevel gear; 13. Screw; 14. Internal threaded hole; 15. Mounting groove; 16. Input bevel gear. DETAILED DESCRIPTION

[0025] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0026] Embodiment 1:

[0027] like Figure 1 As shown, an electric waist bridge device for an operating bed includes an operating bed support 1, a screw 5 and a waist bridge plate 6, wherein the upper end of the screw 5 is connected to the waist bridge plate 6 by a screw 13, and the lower end is provided with a limiting flange 4 for preventing the screw 5 from escaping from the operating bed support 1; an electric motor 3 is installed at the lower end of the operating bed support 1 through a fixing member 2, a transmission assembly is arranged in the fixing member 2, the middle of the screw 5 passes through the operating bed support 1 and the fixing member 2, and the output end of the electric motor 3 is transmission-connected to the screw 5 through the transmission assembly.

[0028] The limiting flange 4 is used to prevent the screw 5 from falling out from the upper part of the operating table support 1 .

[0029] Embodiment 2:

[0030] like Figure 2 As shown, an electric waist bridge device for an operating bed, the transmission assembly includes a gear shaft 11 and an output bevel gear 12 installed inside the fixing member 2, the output shaft 8 of the electric motor 3 is arranged inside the fixing member 2, and an input bevel gear 16 is arranged on the output shaft 8, the input bevel gear 16 is meshed with the bevel gear 1 9 on the gear shaft 11, the bevel gear 2 10 on the gear shaft 11 is meshed with the outer teeth of the output bevel gear 12, the screw 5 passes through the middle of the output bevel gear 12 and the fixing member 2, and the screw 5 is connected to the output bevel gear 12.

[0031] Furthermore, an internal thread is provided in the middle of the output helical gear 12, and the screw rod 5 is threadedly connected to the output helical gear 12 via the internal thread. The input helical gear 16 and the output shaft 8 are an integral structure.

[0032] like Figure 3 As shown, a transfer block 7 is provided at the upper end of the screw rod 5 , and the transfer block 7 is installed in a mounting groove 15 on the waist bridge plate 6 , and the upper end circumference of the screw rod 5 is limitedly connected with the waist bridge plate 6 through the transfer block 7 .

[0033] Among them, the function of the adapter block 7 is to prevent the screw rod 5 from self-rotating during the lifting process, which affects the transmission effect. The adapter block 7 is embedded in the waist bridge plate 6, which has a slot design that can be clamped on the top of the screw rod 5. The three are connected by screws 13, which can limit the rotation of the screw rod 5 and avoid wear on the waist bridge plate 6.

[0034] The upper end of the screw rod 5 is provided with an internal threaded hole 14, and the screw 13 is threadedly connected to the screw rod 5 through the internal threaded hole 14. Other parts are the same as those of the first embodiment.

[0035] The working principle of the utility model is:

[0036] The function of the fixing part 2 is to fix the electric motor 3 on the operating bed bracket 1. During use, when the height of the lumbar bridge needs to be adjusted, the lumbar bridge control button on the operating bed controller can be pressed, and the control system will then drive the electric motor 3 to rotate forward or reverse, and transmit it to the screw 5 through the transmission assembly, so that the screw 5 makes corresponding lifting and lowering movements to achieve the purpose of lifting and lowering the lumbar bridge plate 6 to meet clinical needs.

[0037] Among them, the working principle of the transmission component is: the electric motor 3 transmits power to the input bevel gear 16 on the output shaft 8 through the output shaft 8, the input bevel gear 16 transmits power to the bevel gear 2 10 by meshing with the bevel gear 1 9, and the bevel gear 2 10 transmits power to the screw 5 by meshing with the output bevel gear 12. Since the screw 5 is threadedly connected to the output bevel gear 12 through an internal thread, the rotation of the output bevel gear 12 will drive the screw 5 to achieve up and down reciprocating motion, thereby achieving the purpose of lifting and lowering the waist bridge plate 6.

[0038] The utility model adopts a screw rod 5 and an electric motor 3 to realize the lifting and lowering of the waist bridge. Its efficient mechanical system generates a relatively high thrust, and the maximum load can reach 100 kg. It can achieve a high degree of self-locking and can serve patients of any body shape; secondly, the running speed of the screw rod 5 is about 6 mm / s, which meets the actual needs, and its operation is stable. The two screw rods 5 are controlled by the same control system, which can achieve good synchronization between the two and ensure that the waist bridge plate 6 is in a horizontal state during operation; thirdly, it has a very reliable automatic overload protection function. Even if the screw rod 5 is in overload operation or reaches the end of the stroke, the electric motor 3 can still operate normally and other machine parts will not be burned; finally, the utility model is more suitable for narrow operating bed brackets, and has the advantages of small size, no oil leakage, and easy maintenance and upgrading (a longer screw rod 5 can be replaced as needed).

Claims

1. An electric waist bridge device for an operating table, characterized in that: The invention comprises an operating bed support (1), a screw rod (5) and a lumbar bridge plate (6); the upper end of the screw rod (5) is connected to the lumbar bridge plate (6) via a screw (13), and the lower end is provided with a limiting flange (4); the lower end of the operating bed support (1) is provided with an electric motor (3) via a fixing member (2), a transmission assembly is provided in the fixing member (2), the middle of the screw rod (5) passes through the operating bed support (1) and the fixing member (2), and the output end of the electric motor (3) is transmission-connected to the screw rod (5) via the transmission assembly.

2. The electric waist bridge device for an operating table according to claim 1, characterized in that: The transmission assembly comprises a gear shaft (11) and an output bevel gear (12) mounted inside a fixing member (2); an output shaft (8) of an electric motor (3) is arranged inside the fixing member (2), and an input bevel gear (16) is arranged on the output shaft (8); the input bevel gear (16) meshes with a bevel gear 1 (9) on the gear shaft (11); a bevel gear 2 (10) on the gear shaft (11) meshes with an outer tooth of the output bevel gear (12); a screw rod (5) passes through the middle of the output bevel gear (12) and the fixing member (2), and the screw rod (5) is connected to the output bevel gear (12).

3. The electric waist bridge device for an operating table according to claim 2, characterized in that: An internal thread is provided in the middle of the output helical gear (12), and the screw rod (5) is threadedly connected to the output helical gear (12) via the internal thread.

4. The electric waist bridge device for an operating table according to claim 2, characterized in that: The input bevel gear (16) and the output shaft (8) are an integral structure.

5. The electric waist bridge device for an operating table according to claim 2, characterized in that: The upper end of the screw rod (5) is provided with an adapter block (7), which is installed in a mounting groove (15) on the waist bridge plate (6), and the upper end circumference of the screw rod (5) is connected to the waist bridge plate (6) through the adapter block (7).

6. The electric waist bridge device for an operating table according to any one of claims 1 to 5, characterized in that: An internal threaded hole (14) is provided at the upper end of the screw rod (5), and the screw (13) is threadedly connected to the screw rod (5) through the internal threaded hole (14).

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