Operating bed

Abstract

The embodiment of the invention provides an operating bed. The operating bed comprises a table top, a stand column, a shaft bracket and a translation mechanism. The table top is used for supporting a patient; the shaft bracket is connected to the top end of the stand column, and the table top is connected with the shaft bracket and can horizontally move in the length direction of the table top relative to the shaft bracket. The translation mechanism comprises a motor, a middle transmission assembly, a gear assembly, a first rack and a second rack, the first rack is fixed to the shaft frame, the second rack is fixed to the table top, the gear assembly is arranged between the first rack and the second rack, and the first rack and the second rack are engaged with the gear assembly; the motor is provided with a power shaft, the middle transmission assembly is connected with the power shaft and the gear assembly and used for converting rotation of the power shaft into linear motion of the gear assembly in the length direction of the operating bed, and then the second rack drives the table top to move horizontally. According to the operating bed, the table top can easily achieve large-stroke translation through the translation mechanism, and the translation mechanism occupies a small space and does not occupy too much perspective space of the table top.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an operating table. Background Art

[0002] In order to facilitate X-ray examination of patients during surgery, the tabletops of some operating tables can be translated with a large stroke relative to the columns to more easily and conveniently meet the X-ray fluoroscopy requirements of the operating area. In the related art, one or more hydraulic cylinders are set on the shaft frame under the tabletop, and the tabletop is driven to translate by the hydraulic cylinders. In this solution, if the tabletop is to be translated with a large stroke, the hydraulic cylinder must have a long stroke, the size of the hydraulic cylinder is large, and the required installation space is large, which occupies the fluoroscopy space of the operating tabletop. Summary of the invention

[0003] In view of this, the embodiments of the present application hope to provide an operating table that can meet the large-stroke translation requirements of the table with a simple structure without occupying too much perspective space of the table.

[0004] The present application embodiment provides an operating table, comprising:

[0005] A table top for supporting the patient;

[0006] Column;

[0007] A shaft frame connected to the top of the column, the table top is connected to the shaft frame, and the table top can translate relative to the shaft frame along the length direction of the table top;

[0008] The translation mechanism includes a motor, an intermediate transmission assembly, a gear assembly, a first rack and a second rack, wherein the first rack is fixed to the shaft frame, the second rack is fixed to the table top, the gear assembly is arranged between the first rack and the second rack, and the first rack and the second rack are respectively meshed with the gear assembly; the motor has a power shaft, and the intermediate transmission assembly connects the power shaft and the gear assembly, and is used to convert the rotation of the power shaft into a linear motion of the gear assembly along the length direction of the operating bed, thereby driving the table top to translate through the second rack.

[0009] The operating table of the embodiment of the present application includes a translation mechanism, which includes a motor, an intermediate transmission assembly, a gear assembly, a first rack and a second rack, so that a large-stroke translation of the tabletop can be easily achieved through the translation mechanism, which is convenient for X-ray fluoroscopy of the patient during surgery. In addition, the size of the gear, rack and other structures used in the embodiment of the present application to achieve translation is small, and the required installation space is also small, so that the perspective space of the tabletop of the operating table will not be excessively occupied, which is conducive to improving the user experience. Moreover, the structure of the translation mechanism of the embodiment of the present application is simple, which is conducive to controlling production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a partial structural diagram of an operating table according to an embodiment of the present application, showing the table top, translation mechanism, intermediate transmission assembly and switching structure of the operating table;

[0011] Figure 2 for Figure 1 A schematic diagram of a local structure of an operating table from another perspective;

[0012] Figure 3 for Figure 1 A schematic diagram of a local structure of an operating table from another perspective;

[0013] Figure 4 for Figure 1 The schematic diagram of the exploded structure of the local structure of the operating table shown;

[0014] Figure 5 for Figure 1 A schematic diagram of the partial structure of the operating table from another perspective is shown.

[0015] Description of Reference Numerals

[0016] 1-table top; 3-axis frame; 31-first arm; 32-second arm; 4-translation mechanism; 41-motor; 411-shell cover; 42-intermediate transmission assembly; 421-transmission rod; 422-moving part; 423-reversing device; 4231-first bevel gear; 4232-second bevel gear; 43-gear assembly; 44-first rack; 45-second rack; 5-bed beam; 6-first guide rail; 7-second guide rail; 8-transfer structure. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] The various specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different embodiments and technical solutions can be formed by combining different specific technical features. In order to avoid unnecessary repetition, various possible combinations of the specific technical features in the present invention will not be described separately.

[0019] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use, and the directions "left" and "right" refer to the left and right directions shown in the specific corresponding schematic diagrams, which may be the left and right directions in normal use or not.

[0020] It should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. "Multiple" means greater than or equal to two.

[0021] like Figures 1 to 5 As shown, an embodiment of the present application provides an operating table, which includes a table top 1, a column, an axis frame 3 and a translation mechanism 4.

[0022] The shaft frame 3 is connected to the top of the column. The bottom of the column can be supported on the ground directly or indirectly through a base, and the top of the column is used to support the shaft frame 3 and the table top 1 connected to the shaft frame 3.

[0023] Exemplarily, the height of the column can be adjusted by a lifting mechanism, for example, to meet the needs of different types of surgeries.

[0024] The table top 1 is connected to the shaft frame 3 for supporting the patient. The table top of the table top 1 can be made of carbon fiber material, for example, so that the requirement of high perspective image quality during X-ray examination can be met.

[0025] Exemplarily, the table top 1 may include a seat plate assembly, a back plate assembly, a leg plate assembly, etc., wherein the seat plate assembly is connected to the axis frame 3, the back plate assembly and the leg plate assembly can be connected to the opposite ends of the seat plate assembly along the length direction, and can be folded up or down relative to the seat plate assembly to meet the different body position requirements of the patient during surgery.

[0026] Faced with increasingly complex surgical scenarios, patients are usually required to undergo X-ray fluoroscopy during surgery. Therefore, the operating table is required to have a larger fluoroscopic space and the table can be translated with a large stroke relative to the column to more easily and conveniently meet the needs of X-ray fluoroscopy.

[0027] Exemplarily, the tabletop 1 of the operating bed can be translated relative to the axis frame 3 along the length direction of the tabletop 1 through the translation mechanism 4. The number of the translation mechanism 4 can be only one, and one translation mechanism 4 is arranged on either side of the tabletop 1 along the width direction. The number of the translation mechanism 4 can also be two, and the two translation mechanisms 4 are symmetrically arranged on opposite sides of the tabletop 1 along the width direction.

[0028] The translation mechanism 4 includes a motor 41 , an intermediate transmission assembly 42 , a gear assembly 43 , a first rack 44 and a second rack 45 .

[0029] The first rack 44 and the second rack 45 extend along the length direction of the operating bed and are arranged parallel to each other. Specifically, the first rack 44 is fixed to the shaft frame 3, the second rack 45 is fixed to the table 1, the gear assembly 43 is arranged between the first rack 44 and the second rack 45, and the first rack 44 and the second rack 45 are respectively meshed with the gear assembly 43. It should be noted that the gear assembly 43 will rotate while translating. The gear rack transmission method has the advantages of long stroke, high load capacity, high precision and good reliability, so that the table 1 can be translated stably, quickly and with a large stroke.

[0030] Exemplarily, the first rack 44 and the second rack 45 can be, for example, spur racks or helical racks, and the gears in the gear assembly 43 can be, for example, spur cylindrical gears or helical cylindrical gears. The embodiment of the present application does not specifically limit the structure of the racks and gears.

[0031] The motor 41 has a power shaft, and the intermediate transmission assembly 42 connects the power shaft and the gear assembly 43. The intermediate transmission assembly 42 is at least used to convert the rotational motion of the power shaft into the linear motion of the gear assembly 43 along the length direction of the operating table. The motor 41 is used to provide driving force for the intermediate transmission assembly 42, the gear assembly 43 and other transmission assemblies, so as to achieve a large-stroke translation of the table 1 relative to the shaft frame 3 through these transmission assemblies.

[0032] Exemplarily, the motor 41 may be a servo motor, for example.

[0033] When the motor 41 is in working state, it will drive the power shaft to rotate, and the intermediate transmission assembly 42 can convert the rotation of the power shaft into linear motion of the gear assembly 43 along the length direction of the operating bed, thereby driving the second rack 45 to translate along the length direction of the operating bed through the engagement of the gear assembly 43 with the first rack 44 and the second rack 45, thereby driving the table top 1 fixedly connected to the second rack 45 to translate.

[0034] It should be noted that, in the embodiment of the present application, the length direction of the operating bed is the same as the length direction of the table top, and the width direction of the operating bed is the same as the width direction of the table top.

[0035] In the related art, a hydraulic drive is used to achieve a large-stroke translation of the table of the operating table. One or more hydraulic cylinders are arranged on the shaft frame under the table of the operating table, and the table is driven to translate by the hydraulic cylinders. If a hydraulic drive is used, if a longer stroke is desired, the size of the hydraulic cylinder will be larger, and the required installation space will be larger, which is not conducive to improving space utilization, and may also interfere with other parts of the operating table, affecting the deformation of the table, etc. Moreover, an oversized hydraulic cylinder will also occupy the perspective space of the operating table, resulting in a smaller perspective space of the operating table.

[0036] In the operating bed of the embodiment of the present application, the table 1 can effectively amplify the moving stroke through the cooperation of the power shaft, the intermediate transmission assembly 42, the gear assembly 43 and the rack, so that the table 1 can achieve a large-stroke translation relative to the shaft frame 3 with a simple structure. In addition, the intermediate transmission assembly can convert the rotation of the power shaft into the translation of the gear assembly 43, and the sizes of the structures such as the motor 41, the intermediate transmission assembly 42, the gear assembly 43, the first rack 44 and the second rack 45 are all small, and the required installation space is also small, so that the perspective space of the table 1 of the operating bed will not be excessively occupied, so that the operating bed has a relatively large perspective space.

[0037] Exemplarily, the intermediate transmission assembly 42 has a self-locking structure, which allows the intermediate transmission assembly 42 to drive the gear assembly 43 to move linearly, and prevents the second rack 45 from driving the gear assembly 43 to move under the push of the table 1. In other words, the intermediate transmission assembly 42 has a self-locking function, so that power can only be transmitted unidirectionally from the power shaft to the gear assembly 43 through the intermediate transmission assembly 42, and cannot be transmitted from the gear assembly 43 to the power shaft through the intermediate transmission assembly 42.

[0038] Specifically, when the user needs to translate the table 1, the motor 41 will be controlled to be in a working state, and the power shaft of the motor will drive the intermediate transmission component 42 to move. The intermediate transmission component 42 can drive the gear component 43 to move linearly, and the gear component 43 drives the second rack 45 to move, thereby driving the table 1 to translate. When the translation is completed, in order to ensure the safety of the patient and the accuracy of the detection, it is necessary to ensure that the table 1 can remain in the current position where the movement is completed, that is, when the translation of the table 1 is completed and the motor 41 stops driving, the table 1 will not move accidentally under the push of external force. Therefore, the intermediate transmission component 42 of the embodiment of the present application has a self-locking structure that can prevent the second rack 45 from driving the gear component 43 to move under the push of the table 1, thereby reducing the possibility of accidental movement of the table 1 and improving the safety and reliability of the operating table.

[0039] It should be noted that the intermediate transmission assembly 42 may also not have a self-locking function, and the translation mechanism 4 may be independently provided with any other suitable self-locking structure to achieve self-locking of the table top 1 .

[0040] The specific form of the self-locking structure is not limited, as long as the self-locking structure can allow the gear assembly 43 to move under the drive of the motor 41 and ensure that the gear assembly 43 does not move when the motor 41 is not working. For example, the following trapezoidal screw, the following worm wheel and worm, etc.

[0041] Exemplarily, the translation stroke of the second rack 45 is 2 to 5 times that of the gear assembly 43. The translation stroke of the second rack 45 is the same as that of the table 1, that is, the translation stroke of the table 1 is 2 to 5 times that of the gear assembly 43.

[0042] like Figures 1 to 4 As shown, exemplarily, the gear assembly 43 includes only one gear, which is meshed with the first rack 44 and the second rack 45 at the same time. In this way, the translation stroke of the second rack 45 is twice the translation stroke of the gear assembly 43.

[0043] In some other embodiments, the gear assembly 43 may further include a first gear and a second gear, which are coaxially arranged along the height direction of the operating bed and rotate synchronously, for example, the first gear and the second gear are fixed on the same rotating shaft. The first gear meshes with the first rack 44 and is spaced apart from the second rack 45, that is, the first gear does not mesh with the second rack 45; the second gear meshes with the second rack 45 and is spaced apart from the first rack 44, that is, the second gear does not mesh with the first rack 44. The radius of the second gear is not less than the radius of the first gear. In this way, when the radius of the second gear is the same as the radius of the first gear, the translation stroke of the second rack 45 can be magnified by 2 times relative to the translation stroke of the gear assembly 43, and when the radius of the second gear is greater than the radius of the first gear, the translation stroke of the second rack 45 can be magnified by more than 2 times relative to the translation stroke of the gear assembly 43, and the magnification depends on the ratio of the radii of the two. For example, when the radius of the second gear is twice that of the first gear, the translation stroke of the second rack 45 is three times that of the gear assembly 43. When the radius of the second gear is 3.5 times that of the first gear, the translation stroke of the second rack 45 is 4.5 times that of the gear assembly 43.

[0044] Those skilled in the art should understand that the embodiment of the present application does not specifically limit the gear assembly 43. The gear assembly 43 may, for example, include more than two gears, and the radius or number of teeth of each gear may be different. In this way, users can design different gear assemblies 43 according to actual conditions and processing difficulty, such as designing the number of gears in the gear assembly 43, the radius of the gears, and the tooth ratio between each gear, so that the moving stroke of the second rack 45 can be magnified by different multiples relative to the moving stroke of the gear assembly 43.

[0045] For example, Figure 5 As shown, the intermediate transmission assembly 42 includes a transmission rod 421 and a moving part 422. The transmission rod 421 extends along the length direction of the operating bed. The moving part 422 is sleeved on the outer periphery of the transmission rod 421 and is limited so that it can only move linearly and cannot rotate with the transmission rod 421. The moving part 422 is threadedly matched with the transmission rod 421. The moving part 422 is used to convert the rotation of the transmission rod 421 into linear movement of the moving part 422.

[0046] Specifically, the outer circumference of the transmission rod 421 is provided with an external thread, and the moving part 422 is provided with an internal thread. The moving part 422 is sleeved on the outer circumference of the transmission rod 421. In this way, the rotational motion of the transmission rod 421 can be converted into the linear motion of the moving part 422 through the cooperation of the internal thread and the external thread of the transmission rod 421.

[0047] The embodiment of the present application does not specifically limit the structure of the moving member 422 , and the moving member 422 may be, for example, in the shape of a sleeve, a block, a nut, or the like.

[0048] The gear assembly 43 is rotatably arranged on the moving member 422, so that when the moving member 422 moves linearly, it will drive the gear assembly 43 to move linearly along the length direction of the operating bed, and because the gear assembly 43 is meshed with the first rack 44 and the second rack 45, the gear assembly 43 will rotate while moving linearly, thereby driving the second rack 45 to move linearly as well, and making the second rack 45 have both the linear movement stroke and the rotation stroke of the gear assembly 43. In this way, a large-stroke translation of the table top 1 fixed to the second rack 45 can be achieved in a simple transmission manner.

[0049] The specific type of the transmission rod 421 is not limited.

[0050] For example, in some embodiments, the transmission rod 421 can be a trapezoidal screw. Since the friction angle of the trapezoidal screw is greater than the helical angle, the trapezoidal screw and the moving member 422 can achieve self-locking during the cooperation process, so that the table 1 can be kept in the current position after the translation is completed, the safety of the operating table is improved, the number of parts can be reduced, and the production cost can be reduced. That is to say, in this embodiment, the threaded cooperation structure of the trapezoidal screw and the moving member 422 serves as the self-locking structure of the intermediate transmission assembly 42.

[0051] In other embodiments, the transmission rod 421 may also be a ball screw, etc. In this embodiment, the intermediate transmission assembly 42 may be self-locking through other structures.

[0052] Those skilled in the art should understand that the embodiment of the present application does not impose any specific limitation on the structure of the intermediate transmission assembly 42 and the transmission rod 421, as long as it can ensure that after the table top 1 of the operating bed is translated into place, it will not move accidentally due to external force.

[0053] In some embodiments, the power shaft of the motor 41 and the transmission rod 421 of the intermediate transmission assembly 42 can be coaxially arranged and connected, that is, the rotation axis of the power shaft coincides with the rotation axis of the transmission rod 421, and the torque transmission between the power shaft and the transmission rod 421 does not need to change direction. In this way, the power shaft and the transmission rod 421 can be fixedly connected, and the torque of the power shaft can be directly transmitted to the transmission rod 421.

[0054] In other embodiments, Figures 1 to 5As shown, the power shaft of the motor 41 is arranged to intersect with the transmission rod 421 of the intermediate transmission assembly 42. That is, the axis of the power shaft and the axis of the transmission rod 421 are neither coincident nor parallel, and the two can be plane intersecting straight lines or spatial skew straight lines. The intersection angle of the power shaft and the transmission rod 421 is not limited, for example, it can be 90° or other angles.

[0055] For example, the power shaft extends along the width direction of the operating bed, and the transmission rod 421 extends along the length direction of the operating bed. In this way, the layout of the translation mechanism 4 can be more reasonable, occupying less space, which is conducive to improving space utilization and increasing the perspective space of the table 1 of the operating bed.

[0056] Exemplarily, the intersection arrangement of the power shaft and the transmission rod 421 is described as being perpendicular to each other, but those skilled in the art should understand that the embodiments of the present application are not limited to the situation where the power shaft and the transmission rod 421 are perpendicular to each other.

[0057] In the embodiment where the power shaft and the transmission rod are arranged in an intersecting manner, the intermediate transmission assembly 42 includes a reversing device 423, which connects the power shaft and the transmission rod 421 and is used to transmit the torque of the power shaft to the transmission rod 421. In this embodiment, through the intersecting arrangement, the size occupied by the intermediate transmission assembly 42 and the motor 41 along the length direction of the operating bed can be reduced, avoiding the folding of the table top 1 due to excessive length. In addition, arranging the motor 41 in directions other than the length direction can make the first rack 44 and the second rack 45 have a larger arrangement space and a longer length in the length direction, which is conducive to achieving a larger translation of the table top 1.

[0058] In some embodiments, the reversing device 423 includes a first bevel gear 4231 and a second bevel gear 4232, the first bevel gear 4231 is coaxially arranged and connected to the power shaft, the second bevel gear 4232 is coaxially arranged and connected to the transmission rod 421, the first bevel gear 4231 and the second bevel gear 4232 are meshed, and the transmission rod 421 is a trapezoidal screw.

[0059] The bevel gear operates smoothly, has low noise, good stability and a simple structure. Thus, the direction change can be realized in a simple manner, so that the torque of the power shaft can be transmitted to the transmission rod 421 arranged to intersect with it. In addition, the bevel gear requires a small installation space, which can make the overall structure of the translation mechanism 4 more compact, thereby not occupying too much perspective space of the table 1. Moreover, the transmission rod 421 of the trapezoidal screw can also enable the translation mechanism 4 to achieve a good self-locking function, thereby improving the safety performance of the operating table.

[0060] In some other embodiments, the reversing device 423 includes a worm wheel and a worm, the worm is coaxially arranged and connected to the power shaft, the worm wheel is coaxially arranged and connected to the transmission rod 421, and the worm wheel and the worm are meshed.

[0061] The worm wheel and worm gear have the advantages of smooth transmission and low noise, and the worm wheel and worm gear themselves can also achieve good self-locking, that is, the meshing structure of the worm wheel and the worm gear serves as the self-locking structure of the intermediate transmission component 42. In this way, the translation mechanism 4 does not need to be equipped with an additional self-locking structure, which can reduce the number of parts and components and reduce production costs; in addition, since the worm wheel and worm gear can achieve the self-locking function, the cooperation between the transmission rod 421 and the moving part 422 may not require a self-locking function. For example, the transmission rod 421 may be a structure without a self-locking function, such as a ball screw.

[0062] like Figure 2 As shown, in some embodiments, the operating table further includes a shell cover 411 , and the shell cover 411 is disposed around the motor 41 .

[0063] Exemplarily, the shell cover 411 may be made of materials such as metal, plastic or ceramic.

[0064] The shell cover 411 can provide a certain degree of protection for the motor 41, thereby preventing external dust, water or impurities from entering the motor 41 and damaging the motor 41, thereby increasing the service life of the motor 41 and the safety and stability of the operating table top 1 during translation.

[0065] The motor 41 will also generate heat when working. By performing certain heat dissipation designs on the shell cover 411 (for example, opening heat dissipation holes, adding heat dissipation fins, etc.), the heat dissipation of the motor 41 can be accelerated, the failure of the motor 41 due to overheating can be reduced, and the safety performance of the motor 41 can be further improved.

[0066] In addition, the shell cover 411 disposed around the motor 41 can also reduce the noise generated by the motor 41, thereby effectively improving the user experience of the patient lying on the operating table. Moreover, in an environment such as surgery that requires medical staff to concentrate their minds, reducing the noise of medical equipment is also particularly important.

[0067] For example, Figures 2 to 4 As shown, the bottom of the table top 1 on both sides opposite to each other along the width direction has a bed beam 5. It should be noted that the bed beam 5 is the bed beam at the bottom side of the seat plate assembly. The shaft frame 3 is roughly located between the two bed beams 5.

[0068] The second rack 45 is fixed to the side of the bed beam 5 facing the shaft frame 3. The first rack 44 is fixed to the side of the shaft frame 3 facing the corresponding bed beam 5.

[0069] Exemplarily, the motor 41 does not exceed the bottom end of the bed beam 5 in the height direction, so that it will not interfere with other components at the bottom end of the bed beam 5 of the operating bed, thereby not affecting other deformations of the operating bed.

[0070] Exemplarily, the motor 41 is disposed on the side of the shaft frame 3 close to the foot end of the operating bed. In most cases, an X-ray fluoroscopy is performed on the side of the head end of the seat assembly, so arranging the motor 41 on the side of the shaft frame 3 close to the foot end of the operating bed can reduce the influence of the motor 41 on the fluoroscopy space.

[0071] Of course, those skilled in the art should understand that in some other embodiments, the motor 41 may also be disposed at any other suitable position.

[0072] Exemplarily, the table top 1 has a zero working position, and at the zero working position, the table top 1 is in an initial position without translation. It should be noted that the zero working position is not necessarily that the gear assembly 43 is located at the end of the first rack 44, but may also be located in the middle of the first rack 44, etc. The position of the zero working position may be different for different operating beds, which can be known from the instructions of the operating bed or the marked position on the operating bed. For example, at the zero working position, all the operating bed forms claimed by the operating bed can be realized, such as the folding up and folding down of the leg board assembly, the folding up and folding down of the back board assembly, the left tilt and right tilt of the table top, the forward tilt and backward tilt of the table top, etc.

[0073] In the zero working position, the motor 41 does not extend beyond the end of the bed beam 5 close to the foot end of the operating bed along the length direction.

[0074] When the table top 1 is at the zero working position, the motor 41 will not exceed the end of the bed beam 5 near the foot end of the operating bed along the length direction, so that the motor 41 will not affect the folding up and down of the leg board assembly, and will not affect the folding function of the leg board assembly.

[0075] For example, the lengths of the first rack 44 and the second rack 45 of the translation mechanism 4 are not less than half of the length of the shaft frame 3 along the length direction of the operating bed, and at the same time, the lengths of the first rack 44 and the second rack 45 do not exceed the length of the shaft frame 3. In this way, the large-stroke translation requirements of the table top 1 can be met, and no matter what position the table top 1 is in, the first rack 44 and the second rack 45 will not affect the folding function of the leg board assembly or the back board assembly.

[0076] For example, see Figure 5 The shaft frame 3 is a frame structure, which includes two first arms 31 and two second arms 32. The two first arms 31 extend along the length direction of the operating table, and the two second arms 32 connect the two first arms 31. That is, it is a roughly quadrilateral frame structure. Among them, the first rack 44 is arranged on the first arm 31 and is located in the range between the two second arms 32. In this way, the first rack 44 will not interfere with the components that realize other functions of the table top 1, and will not affect the folding, deformation, etc. of the table top 1, thereby improving the stability of the operating table.

[0077] For example, see Figure 4 and Figure 5 The operating bed includes a first guide rail 6, a second guide rail 7 and a transfer structure 8. The first guide rail 6 is fixed to the axis frame 3, the second guide rail 7 is fixed to the bed beam 5, and the transfer structure 8 connects the first guide rail 6 and the second guide rail 7 and can slide relative to the first guide rail 6 and the second guide rail 7, wherein the height of the first guide rail 6 is higher than the height of the second guide rail 7.

[0078] Guide rails are usually grooves or ridges made of metal or other suitable materials. They are mainly used in situations where linear reciprocating motion occurs. Guide rails can support, fix, guide moving parts or devices and reduce friction during their movement.

[0079] Exemplarily, the first guide rail 6 and the second guide rail 7 are ridge-shaped convex structures, and the transition structure 8 is provided with grooves on opposite sides along the width direction of the table top 1, one of the grooves faces the first guide rail 6, and the other groove faces the second guide rail 7. In this way, the transition structure 8 can cooperate with the convex structures of the first guide rail 6 and the second guide rail 7 through at least two grooves, thereby realizing the sliding connection between the first guide rail 6 and the second guide rail 7.

[0080] In some other embodiments, the first guide rail 6 and the second guide rail 7 may also be in the shape of grooves, and the transfer structure 8 is provided with convex structures on the opposite sides along the width direction of the table top 1, and the transfer structure 8 cooperates with the grooves of the first guide rail 6 and the second guide rail 7 respectively through at least two convex structures to achieve a sliding connection between the first guide rail 6 and the second guide rail 7.

[0081] In this way, the operating bed can realize the connection between the bed beam 5 and the shaft frame 3 through the first guide rail 6, the second guide rail 7 and the adapter structure 8, and will not affect the translation of the table top 1 relative to the shaft frame 3. The first guide rail 6, the second guide rail 7 and the adapter structure 8 can play a certain guiding role in the translation of the table top 1, and can also reduce the shaking of the table top 1 when it translates along the length direction, so that the translation of the table top 1 is smoother and more stable, and the reliability is higher.

[0082] For example, in the plane projection perpendicular to the height direction of the operating bed, the first guide rail 6 is located between the first rack 44 and the second rack 45, and the second rack 45 is located between the first guide rail 6 and the second guide rail 7. That is to say, in the plane projection perpendicular to the height direction of the operating bed, from the axis frame 3 to the corresponding bed beam 5, the first rack 44, the first guide rail 6, the second rack 45, and the second guide rail 7 are arranged in sequence. In this way, the overall structure of the operating bed can be made more compact, which is conducive to improving space utilization and improving the perspective space of the table 1 of the operating bed.

[0083] Specifically, the transmission rod 421 is located below the middle area of ​​the first rack 44 and the second rack 45 , and the moving member 422 is located above the transmission rod 421 and between the first rack 44 and the second rack 45 .

[0084] The first guide rail 6 is substantially located below the transmission rod 421. In this way, the space below the transmission rod 421 can be fully utilized to arrange the first guide rail 6.

[0085] The height of the second guide rail 7 is lower than that of the first guide rail 6, that is, the first guide rail 6 and the second guide rail 7 are staggered in both the height direction and the width direction of the operating bed. In this way, while avoiding structural interference between the bed beam 5 and the axis frame 3, the space can be fully utilized to improve the compactness of the structure.

[0086] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0087] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An operating table, characterized in that: include: A table top for supporting the patient; Column; A shaft frame connected to the top of the column, the table top is connected to the shaft frame, and the table top can translate relative to the shaft frame along the length direction of the table top; The translation mechanism comprises a motor, an intermediate transmission assembly, a gear assembly, a first rack and a second rack, wherein the first rack is fixed to the shaft frame, the second rack is fixed to the table, the gear assembly is arranged between the first rack and the second rack, and the first rack and the second rack are respectively meshed with the gear assembly; The motor has a power shaft, and the intermediate transmission assembly connects the power shaft and the gear assembly, and is used to convert the rotation of the power shaft into linear motion of the gear assembly along the length direction of the operating bed, thereby driving the table top to translate through the second rack.

2. The operating table according to claim 1, characterized in that: The intermediate transmission assembly has a self-locking structure, which allows the intermediate transmission assembly to drive the gear assembly to move linearly and prevents the second rack from driving the gear assembly to move under the push of the table.

3. The operating table according to claim 1, characterized in that: The translation stroke of the second rack is 2 to 5 times the translation stroke of the gear assembly.

4. The operating table according to claim 1, characterized in that: The intermediate transmission assembly includes a transmission rod and a moving part. The transmission rod extends along the length direction of the operating bed. The moving part is sleeved on the outer circumference of the transmission rod, and the two are threadedly matched. The moving part is used to convert the rotation of the transmission rod into linear movement of the moving part. The gear assembly is rotatably arranged on the moving part.

5. The operating table according to claim 4, characterized in that: The transmission rod is a trapezoidal lead screw, wherein the thread matching structure between the trapezoidal lead screw and the moving part serves as a self-locking structure of the intermediate transmission assembly.

6. The operating table according to claim 4, characterized in that: The power shaft is coaxially arranged and connected with the transmission rod.

7. The operating table according to claim 4, characterized in that: The power shaft and the transmission rod are arranged to intersect each other; the intermediate transmission assembly includes a reversing device, which connects the power shaft and the transmission rod and is used to transmit the torque of the power shaft to the transmission rod.

8. The operating table according to claim 7, characterized in that: The reversing device includes a first bevel gear and a second bevel gear, the first bevel gear is coaxially arranged and connected to the power shaft, the second bevel gear is coaxially arranged and connected to the transmission rod, the first bevel gear and the second bevel gear are meshed, and the transmission rod is a trapezoidal screw.

9. The operating table according to claim 7, characterized in that: The reversing device includes a worm wheel and a worm, the worm is coaxially arranged and connected to the power shaft, the worm wheel is coaxially arranged and connected to the transmission rod, the worm wheel and the worm are meshed, wherein the meshing structure of the worm wheel and the worm serves as a self-locking structure of the intermediate transmission assembly.

10. The operating table according to claim 1, characterized in that: The gear assembly includes a gear that meshes with both the first rack and the second rack.

11. The operating table according to claim 1, characterized in that: The gear assembly comprises a first gear and a second gear, the first gear and the second gear are coaxially arranged along the height direction of the operating bed and rotate synchronously; The first gear meshes with the first rack and is spaced apart from the second rack; the second gear meshes with the second rack and is spaced apart from the first rack; Wherein, the radius of the second gear is not less than the radius of the first gear.

12. The operating table according to claim 1, characterized in that: The operating bed also includes a shell cover, which is arranged around the motor.

13. The operating table according to claim 1, characterized in that: The bottom of the table top on two opposite sides along the width direction is provided with bed beams, and the second rack is fixed to the side of the bed beam facing the shaft frame; the motor does not exceed the bottom end of the bed beam along the height direction.

14. The operating table according to claim 1, characterized in that: The motor is arranged on one side of the shaft frame close to the foot end of the operating bed.

15. The operating table according to claim 14, characterized in that: The bottom of the table top on two opposite sides along the width direction is provided with bed beams; The table top has a zero working position, in which the table top is in an initial position without translation, and the motor does not exceed the end of the bed beam close to the foot end of the operating bed along the length direction.

16. The operating table according to claim 1, characterized in that: The lengths of the first rack and the second rack are not less than half of the length of the shaft frame along the length direction of the operating bed, and do not exceed the length of the shaft frame.

17. The operating table according to claim 1, characterized in that: The shaft frame is a frame structure, and the frame structure includes two first arms and two second arms, the two first arms extend along the length direction of the operating bed, and the two second arms connect the two first arms; Wherein, the first rack is arranged on the first arm and is located in the range between the two second arms.

18. The operating table according to claim 1, characterized in that: The bottom of the table top on both sides opposite to each other in the width direction is provided with a bed beam, and the operating bed includes a first guide rail, a second guide rail and a transition structure, wherein the first guide rail is fixed to the axis frame, the second guide rail is fixed to the bed beam, and the transition structure connects the first guide rail and the second guide rail and can slide relative to the first guide rail and the second guide rail; wherein the height of the first guide rail is higher than the height of the second guide rail.

19. The operating table according to claim 18, characterized in that: In a plane projection perpendicular to the height direction of the operating bed, the first guide rail is located between the first rack and the second rack; the second rack is located between the first guide rail and the second guide rail.

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