Electric waist bridge of operating bed

Abstract

The utility model relates to a surgical bed electric waist bridge, including screw nut, set up on the support, connecting rod, one end rotation connection screw nut, the other end rotation connection waist bridge board, support rod, one end rotation connection support, the other end rotation connection connecting rod, wherein, waist bridge board transverse setting, along the length direction of waist bridge board, connecting rod, support rod and screw nut homeward setting at least two, the waist bridge board is set up limit slot, connecting rod is inserted into limit slot and rotates and connects waist bridge board, the utility model discloses the height of waist bridge board is adjusted through connecting rod rotation. The waist bridge board can rotate around the connecting rod along the length direction of the operating bed, so that the waist bridge board always adheres to the waist of the patient, thereby ensuring the stability of the patient's body position, the comfort of the patient and the stability of the waist bridge lifting process.

Description

Technical Field

[0001] This utility model relates to the field of lumbar bridge lifting technology, and in particular to an electric lumbar bridge for operating tables. Background Technology

[0002] A lumbar bridge is used during certain surgeries, such as kidney surgery. A lumbar bridge is a height-adjustable lumbar support structure on the operating table; its function is to elevate the lower back to expose the surgical field.

[0003] Existing lumbar bridge lifting structures employ a scissor-type lifting mechanism, composed of interlocking hinged rods. Adjusting the angle between these rods regulates the lifting motion of the lumbar bridge. The lumbar bridge rotates along the direction of the rods' swing. However, it cannot rotate or move along the length of the operating table. This results in the lumbar bridge failing to conform to the patient's body position when raising the lower back, affecting patient stability and comfort. Furthermore, to enhance the structural strength of the lumbar bridge along the length of the operating table, two or more rods are often installed, complicating the lifting structure.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an electric lumbar bridge for the operating table to enhance the fit between the lumbar bridge and the patient.

[0006] The technical solution of this utility model is as follows:

[0007] The electric lumbar bridge of the operating table includes:

[0008] The lead screw nut is mounted on the bracket.

[0009] The connecting rod is rotatably connected to the lead screw nut at one end and to the waist bridge plate at the other end.

[0010] A support rod, one end of which is rotatably connected to the bracket, and the other end of which is rotatably connected to the connecting rod;

[0011] The waist bridge plate is arranged laterally; at least two connecting rods, support rods and lead screw nuts are arranged in the same direction along the length of the waist bridge plate; a limiting groove is formed on the waist bridge plate; the connecting rod extends into the limiting groove and is rotatably connected to the waist bridge plate.

[0012] A further technical solution is that, along the length direction of the lead screw nut, the vertical distance from one end of the support rod connected to the connecting rod to the lead screw nut is greater than the vertical distance from one end of the support rod connected to the bracket to the lead screw nut.

[0013] A further technical solution is that the waist bridge plate has an extension on its surface facing the connecting rod; the limiting groove is formed on the extension; and the extension is rotatably connected to the bracket.

[0014] A further technical solution is that the connecting rod and the lead screw nut, the connecting rod and the waist bridge plate, the connecting rod and the support rod, and the support rod and the bracket are respectively rotatably connected by rotating shafts.

[0015] A further technical solution is that the lead screw nut includes a lead screw and a nut that cooperates with the lead screw; the connecting rod is rotatably connected to the nut.

[0016] A further technical solution is that the lead screw is made of 40Cr heat-treated material; and the nut is made of tin bronze.

[0017] A further technical solution is that the lead screw nut is connected to a motor; and a sensor is installed on the motor.

[0018] A further technical solution is that limit switches are respectively provided at the two ends of the lead screw nut; the limit switches are connected to the motor.

[0019] A further technical solution is that the relationship between the positions of the lead screw nut, connecting rod, and support rod is expressed as follows:

[0020]

[0021] in, for ; for ; for a is the length of the support rod; b is the length of the connecting rod between the support rod and the connecting rod and the lead screw nut; s is the distance between the fixed position of the support rod and the connection position of the connecting rod and the lead screw nut along the sliding direction of the lead screw nut; e is the distance between the lead screw nut and the fixed position of the support rod perpendicular to the sliding direction of the lead screw nut. The angle between the connecting rod and the lead screw.

[0022] A further technical solution is to provide an antibacterial coating on the surface of the waist bridge plate.

[0023] The beneficial technical effects of this utility model are as follows:

[0024] (1) The electric lumbar bridge of the operating table in this utility model is equipped with a connecting rod. The height of the lumbar bridge plate can be adjusted by driving the connecting rod to rotate. The rotation surface of the connecting rod is parallel to the length direction of the operating table, so that when the lumbar bridge plate is raised and lowered to lift the patient's waist, the lumbar bridge plate can rotate around the connecting rod along the length direction of the operating table. The lumbar bridge plate can rotate around the connecting rod along the length direction of the operating table, so that the lumbar bridge plate always fits the patient's waist, thereby ensuring the stability of the patient's position, the patient's comfort, and the smoothness of the lumbar bridge raising and lowering process. Moreover, only one connecting rod is set on one side of the lumbar bridge plate, simplifying the structure of the electric lumbar bridge of the operating table. In addition, a support rod and a screw nut are also provided. One end of the support rod is fixed to support and limit the position of the connecting rod, ensuring that the lumbar bridge plate is raised and lowered according to the preset path. The connecting rod is driven to rotate by the screw nut. The screw nut has high transmission accuracy, which is convenient for accurately positioning the height of the lumbar bridge plate. Moreover, the screw nut has smooth transmission, high transmission efficiency, strong load-bearing capacity, and can also achieve self-locking. The self-locking function prevents the lumbar bridge from suddenly dropping and affecting the operation, thus improving the safety of the electric lumbar bridge on the operating table.

[0025] (2) Furthermore, limit switches are installed on the lead screw to prevent the lumbar bridge from overtravel and to provide limit protection, thereby improving the safety performance of the entire electric lumbar bridge of the operating table.

[0026] (3) Furthermore, sensors can be installed on the motor to monitor data such as the motor speed, direction of rotation and current, so that operators can obtain the working status of the motor. Attached Figure Description

[0027] Figure 1 A three-dimensional structural schematic diagram of an electric lumbar bridge for an operating table according to an embodiment of the present disclosure is shown.

[0028] Figure 2 A three-dimensional structural diagram of an electric lumbar bridge for an operating table according to an embodiment of the present disclosure is shown, with some of the support structure hidden.

[0029] Figure 3 A schematic diagram of the left side of the electric lumbar bridge for an operating table according to an embodiment of the present disclosure is shown, with part of the support removed.

[0030] Figure 4 The diagram shows a left-side view of the electric lumbar bridge of an operating table according to an embodiment of the present disclosure, with some of the supports removed and the lumbar bridge fully extended.

[0031] Figure 5 A schematic diagram of the dimensions of an electric lumbar bridge for an operating table according to an embodiment of the present disclosure is shown.

[0032] Marked in the attached diagram:

[0033] 1. Bracket; 2. Waist bridge plate; 21. Extension; 22. Limiting groove; 23. Connecting rod; 231. Rotating shaft; 24. Support rod; 31. Lead screw; 32. Nut; 4. Motor. Detailed Implementation

[0034] To make the objectives, features, and advantages of this utility model more apparent and understandable, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0035] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Figure 1 A three-dimensional structural schematic diagram of an electric lumbar bridge for an operating table according to an embodiment of the present disclosure is shown. Figure 2 A three-dimensional structural diagram of an electric lumbar bridge for an operating table according to an embodiment of the present disclosure is shown, with some of the support structure hidden. Figure 3 A schematic diagram of the left side of the electric lumbar bridge for an operating table according to an embodiment of the present disclosure is shown, with part of the support removed. Figure 4 This diagram illustrates a left-side view of an electric lumbar bridge for an operating table according to an embodiment of this disclosure, with some of the support structure removed and the bridge fully extended. Please refer to... Figure 1 , Figure 2 , Figure 3 and Figure 4The electric lumbar bridge of the operating table includes a lead screw and nut, mounted on the support 1. The lead screw and nut drive the connecting rod 23 to rotate. The lead screw and nut have high transmission precision, facilitating accurate positioning of the lumbar bridge plate 2. Furthermore, the lead screw and nut provide smooth transmission, high transmission efficiency, strong load-bearing capacity, and self-locking capability. This self-locking function prevents the lumbar bridge plate 2 from suddenly dropping due to power failure, patient movement, or surgical manipulation, thus improving the safety of the electric lumbar bridge. The connecting rod 23 is rotatably connected to the lead screw and nut at one end and to the lumbar bridge plate 2 at the other. Driving the connecting rod 23 to rotate adjusts the height of the lumbar bridge plate 2. The rotation plane of the connecting rod 23 is parallel to the length of the operating table (not shown in the figure), allowing the lumbar bridge plate 2 to rotate around the connecting rod 23 along the length of the operating table when raising or lowering the patient's waist. This rotation ensures that the lumbar bridge plate 2 always conforms to the patient's waist, guaranteeing patient stability and comfort. Furthermore, only one connecting rod 23 is needed on each side of the lumbar bridge plate 2, simplifying the electric lumbar bridge structure of the operating table. The lumbar bridge plate 2 not only conforms to the curve of the patient's waist but also further conforms to the patient's lumbar region, reducing pressure and improving the stability of the lumbar bridge plate 2's lifting and lowering process. The support rod 24 is rotatably connected to the bracket 1 at one end to fix the position of the support rod 24 and limit the position of the connecting rod 23, ensuring that the lumbar bridge plate 2 rises and falls along a preset path. The other end of the support rod 24 is rotatably connected to the connecting rod 23. Specifically, along the length of the lead screw nut, the vertical distance from the end of the support rod 24 connected to the connecting rod 23 to the screw is greater than the vertical distance from the end of the support rod 24 connected to the bracket 1 to the screw. This ensures that when the lead screw nut pushes the support rod 24 to push the connecting rod 23, the connecting rod 23 pushes the lumbar bridge plate 2 upwards.

[0037] The lumbar bridge plate 2 is arranged laterally. At least two connecting rods 23, support rods 24, and lead screw nuts are arranged in the same direction along the length of the lumbar bridge plate 2 to improve the stability of the lumbar bridge plate 2. A limiting groove 22 is provided on the lumbar bridge plate 2. After the connecting rod 23 extends into the limiting groove 22, it rotates to connect with the lumbar bridge plate 2, thereby limiting the rotation angle of the lumbar bridge plate 2 around the connecting rod 23 and preventing large-angle rotation of the lumbar bridge plate 2 around the connecting rod 23 from affecting the retraction action of the connecting rod 23. It also prevents the lumbar bridge plate 2 from not fitting the patient properly after large-angle rotation around the connecting rod 23.

[0038] In some embodiments, the bracket 1 can be a housing encasing components such as the lumbar bridge plate 2 and the lead screw nut. The electric lumbar bridge of the operating table is mounted on the operating table through this housing, facilitating pre-assembly of the electric lumbar bridge before installation on the operating table. During subsequent maintenance, the entire electric lumbar bridge of the operating table can be replaced first to allow the lumbar bridge plate 2 to function normally on the operating table, and then the replaced electric lumbar bridge can be maintained, reducing the downtime of the operating table.

[0039] Please refer to Figure 3 and Figure 4An extension 21 is provided on the surface of the waist bridge plate 2 facing the connecting rod 23. A limiting groove 22 is formed on the extension 21. The waist bridge plate 2 is rotatably connected to the bracket 1 through the extension 21. The extension 21 is protruding to facilitate the connection between the waist bridge plate 2 and the connecting rod 23.

[0040] Preferably, the connecting rod 23 and the lead screw nut, the connecting rod 23 and the waist bridge plate 2, the connecting rod 23 and the support rod 24, and the support rod 24 and the bracket 1 are rotatably connected by a rotating shaft 231. Specifically, bearings and bushings are also provided. Taking the rotatable connection between the connecting rod 23 and the support rod 24 as an example, a hole is made in the connecting rod 23 and a bearing is provided therein. A bushing is fitted onto the rotating shaft 231 and then placed on the support rod 24. The bearing is fitted onto the rotating shaft 231 to rotatably connect the support rod 24 and the bracket 1.

[0041] More preferably, the surface of the lumbar bridge plate 2 can be provided with an antibacterial coating to inhibit microbial growth, reduce cleaning stress, and decrease the risk of nosocomial infections in patients.

[0042] Please refer to Figure 3 and Figure 4 The lead screw nut includes a lead screw 31 and a nut 32 that mates with the lead screw 31. The connecting rod 23 is rotatably connected to the nut 32. Specifically, the lead screw nut can be a sliding lead screw nut, with a trapezoidal thread on the lead screw 31 and an internal thread on the nut 32 that mates with the trapezoidal thread.

[0043] The lead screw 31 is made of 40Cr steel with a quenching and tempering treatment. The quenched and tempered 40Cr steel possesses good strength, toughness, and wear resistance, meeting the mechanical performance requirements of the lead screw 31 during transmission. The nut 32 is made of tin bronze. Tin bronze has a low coefficient of friction and good wear resistance, ensuring the service life of the lead screw nut.

[0044] Figure 5 A schematic diagram showing the dimensions of an electric lumbar bridge for an operating table according to an embodiment of this disclosure is provided. Please refer to... Figure 3 , Figure 4 and Figure 5A lead screw nut is connected to a motor 4. The motor 4 drives the lead screw 31 to rotate, quickly and precisely adjusting the position of the nut 32, thereby adjusting the height of the lumbar bridge plate 2 to meet the subtle requirements of different surgical procedures for lumbar support height, and the rapid adjustment reduces surgical interruption time. The motor 4 can be a DC geared motor 4 to output high torque and control the output speed. A hexagonal hole is provided on the output shaft of the motor 4, and a hexagonal shaft (not shown in the figure) extends from the lead screw 31 into the hexagonal hole to transmit the torque of the motor 4 to the lead screw 31. A sensor is provided on the motor 4. The sensor can be, but is not limited to, a commercially available Allegro A3144 type Hall element, which is located on the body of the motor 4, and a magnet is provided on the rotating shaft 231 of the motor 4 to trigger the Hall element. In some embodiments, a steering sensor, a current sensor, and a display screen can also be provided to allow the user to view the operating status of the motor 4 in real time. Two or more lead screw nuts can be provided along the length of the lumbar bridge plate 2. Correspondingly, two or more motors 4 also need to be provided. Different lead screws 31 can achieve mechanical synchronization through gears, chains, or belts. Alternatively, different motors 4 can be driven to rotate synchronously via relays (not shown in the figure). Specifically, one motor 4 is designated as the driving motor 4, and the others are designated as driven motors 4. Sensors monitor the data from the driving motor and transmit it to the relays driving the driven motors 4, allowing the driven motors to adjust their output in real time based on the data from the driving motor 4. This prevents localized stress concentration caused by asynchronous operation of the motors 4, thus ensuring the service life of all components.

[0045] Preferably, limit switches are provided at the two ends of the lead screw nut's stroke. The limit switches are connected to the motor 4. The limit switches can be, but are not limited to, commercially available Omron D4MC-5020-N type limit switches. When the nut 32 slides along the lead screw 31 to a preset position, the limit switches are triggered. At this time, the limit switches control the motor 4 to stop outputting torque, and utilize the self-locking property of the lead screw nut to fix the position of the nut 32. Two or more lead screw nuts can be provided, and correspondingly, two or more sets of limit switches are also provided to comprehensively limit the travel of each nut 32, preventing the nut 32 from overtraveling and interfering with other components.

[0046] More preferably, the relationship between the positions of the lead screw nut, connecting rod 23, and support rod 24 is as follows:

[0047]

[0048] in, for for for a is the length of the support rod 24; b is the connection position between the support rod 24 and the connecting rod 23, and the length of the connecting rod 23 between the lead screw and the nut; s is the distance from the fixed position of the support rod 24 to the connection position between the connecting rod 23 and the lead screw and the nut along the sliding direction of the lead screw and the nut; e is the distance from the lead screw and the nut to the fixed position of the support rod 24 perpendicular to the sliding direction of the lead screw and the nut. The angle between the connecting rod and the lead screw is used to facilitate the design of the dimensions of the lead screw nut, connecting rod 23 and support rod 24, as well as their relative positions.

[0049] The specific workflow of this utility model is as follows:

[0050] Motor 4 drives lead screw 31 to rotate, and nut 32 moves towards the side closer to support rod 24. The moving nut 32 drives connecting rod 23 to rotate and lift the lumbar bridge plate 2 upward. During the rotation of connecting rod 23, support rod 24 always supports and restricts connecting rod 23. The lumbar bridge plate 2 supports the patient's waist as it is lifted. As the patient's posture changes, the lumbar bridge plate 2 rotates around connecting rod 23, always conforming to the patient. Until nut 32 moves to the end of its stroke and triggers the limit switch, motor 4 stops driving lead screw 31, at which point the lumbar bridge plate 2 rises to its highest point.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An electric lumbar support for an operating table, characterized in that, The electric lumbar bridge of the operating table includes: The lead screw nut is mounted on the bracket. The connecting rod is rotatably connected to the lead screw nut at one end and to the waist bridge plate at the other end. A support rod, one end of which is rotatably connected to the bracket, and the other end of which is rotatably connected to the connecting rod; The waist bridge plate is arranged laterally; at least two connecting rods, support rods and lead screw nuts are arranged in the same direction along the length of the waist bridge plate; a limiting groove is formed on the waist bridge plate; the connecting rod extends into the limiting groove and is rotatably connected to the waist bridge plate.

2. The electric lumbar bridge for operating tables as described in claim 1, characterized in that: Along the length of the lead screw nut, the vertical distance from the end of the support rod connected to the connecting rod to the lead screw nut is greater than the vertical distance from the end of the support rod connected to the bracket to the lead screw nut.

3. The electric lumbar bridge for the operating table as described in claim 1, characterized in that: The waist bridge plate has an extension on its surface facing the connecting rod; the limiting groove is formed on the extension; the extension is rotatably connected to the bracket.

4. The electric lumbar bridge for operating tables as described in claim 1, characterized in that: The connecting rod and the lead screw nut, the connecting rod and the waist bridge plate, the connecting rod and the support rod, and the support rod and the bracket are respectively rotatably connected by rotating shafts.

5. The electric lumbar bridge for operating tables as described in claim 1, characterized in that: The lead screw nut includes a lead screw and a nut that engages with the lead screw; the connecting rod is rotatably connected to the nut.

6. The electric lumbar bridge for operating tables as described in claim 5, characterized in that: The lead screw is made of 40Cr heat-treated material; the nut is made of tin bronze.

7. The electric lumbar bridge for operating tables as described in claim 1, characterized in that: The lead screw nut is connected to a motor; a sensor is installed on the motor.

8. The electric lumbar bridge for operating tables as described in claim 7, characterized in that: Limit switches are provided at the two ends of the lead screw nut; the limit switches are connected to the motor.

9. The electric lumbar bridge for operating tables as described in claim 1, characterized in that: The relationship between the positions of the lead screw nut, connecting rod, and support rod is as follows: in, for ; for ; for a is the length of the support rod; b is the length of the connecting rod between the support rod and the connecting rod and the lead screw nut; s is the distance between the fixed position of the support rod and the connection position of the connecting rod and the lead screw nut along the sliding direction of the lead screw nut; e is the distance between the lead screw nut and the fixed position of the support rod perpendicular to the sliding direction of the lead screw nut. The angle between the connecting rod and the lead screw.

10. The electric lumbar bridge for the operating table as described in claim 1, characterized in that: The surface of the waist bridge plate is coated with an antibacterial coating.

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