A surgical bed

Abstract

This application provides an operating table, including a base, one or more casters, a braking mechanism, and an unlocking mechanism. The braking mechanism is connected to an unloading channel. The unlocking mechanism includes a manual operating mechanism, a damping return component, and a valve assembly. The valve assembly includes a valve seat and a valve body disposed within the valve seat. The manual operating mechanism moves in the unlocking direction under external force, driving the valve body from a position where the unloading channel is blocked to a position where the unloading channel is open, so that the braking mechanism can unload through the unloading channel and release the brake on the casters. The damping return component stores energy during the movement of the manual operating mechanism in the unlocking direction and provides a reset force and damping force to the manual operating mechanism when the external force is removed, so that the manual operating mechanism and the valve body reset after a delay. The operating table of this application embodiment achieves delayed reset through the damping return component, which ensures sufficient unlocking time and ensures that subsequent operating table locking operations are not affected, making operation convenient and reliable.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an operating table. Background Technology

[0002] In related technologies, emergency unlocking of operating tables typically employs a direct-connection shut-off valve structure with a manual operating element. In abnormal operating table conditions, such as when there is no power, a manual reset is required after the emergency unlocking operation before the operating table can be locked. However, in clinical settings, manual reset is often forgotten, resulting in the operating table failing to lock, necessitating an additional check of the emergency unlocking operating element's status. Summary of the Invention

[0003] In view of this, the embodiments of this application aim to provide an operating table that can be unlocked through an unlocking mechanism, resulting in high operational reliability.

[0004] This application provides an embodiment of an operating bed, including:

[0005] Base;

[0006] One or more casters are mounted on the base for moving the operating table;

[0007] A braking mechanism, wherein the braking mechanism is connected to an unloading channel;

[0008] The unlocking mechanism includes a manual operation mechanism, a damping recovery component, and a valve assembly disposed on the unloading channel. The valve assembly includes a valve seat and a valve body disposed within the valve seat. The valve body is used to open or close the unloading channel.

[0009] The manual operating mechanism is used to move in the unlocking direction under the action of external force, and drive the valve body to move from the position of blocking the unloading channel to the position of opening the unloading channel, so that the brake mechanism can unload through the unloading channel, thereby releasing the brake on the caster.

[0010] The damping recovery component is used to store energy during the movement of the manual operating mechanism toward the unlocking direction, and to provide a reset force and damping force to the manual operating mechanism when the external force is removed, so that the manual operating mechanism and the valve body reset after a delay.

[0011] In some embodiments, the valve body moves linearly within the valve seat in a first direction, the manual operating mechanism is separably abutted against the valve body in the first direction, and the valve assembly further includes an elastic element that provides a spring force to the valve body toward the manual operating mechanism.

[0012] In some implementations, the damping recovery assembly includes a damping unit and a reset unit. The reset unit is used to apply a reset force to the manual operating mechanism when the external force is removed, and the damping unit is used to apply a damping force to the manual operating mechanism during the reset process in which the reset unit drives the manual operating mechanism to reset.

[0013] In some implementations, the manual operating mechanism includes a push rod and an operating element, at least a portion of the push rod being inserted into the valve seat and engaging with the valve body in a first direction, the operating element pushing the valve body to move linearly in the first direction via the push rod, and the operating element being movable relative to the push rod.

[0014] In some embodiments, the travel of the operating element includes a drive travel segment and at least one idle travel segment;

[0015] The at least one empty travel segment is located at one end of the drive travel segment toward the unlocking direction and / or at one end away from the unlocking direction;

[0016] During the drive stroke, the operating element, the push rod, and the valve body move in tandem; during the idle stroke, the push rod and the valve body remain stationary, while the operating element moves relative to the push rod.

[0017] In some embodiments, the operating element and the push rod are separably abutted in the first direction, the damping return assembly includes a reset unit and a damping unit, the reset unit includes a first reset member and a second reset member, the first reset member provides a reset force to cause the push rod to reset, the second reset member provides a reset force to cause the operating element to reset, and the damping unit is used to provide a damping force to the operating element and / or the push rod during the reset movement.

[0018] In some implementations, the push rod moves linearly along the first direction, the operating element rotates about the center line of the push rod, and a reversing structure is provided at the interface between the operating element and the push rod, the reversing structure being used to convert the rotation of the operating element into the linear motion of the push rod.

[0019] In some embodiments, the actuating element includes a first end face, and the push rod includes a second end face, with the first end face and the second end face facing each other;

[0020] The reversing structure includes a helical surface disposed on the first end face and / or the second end face, the helical surface extending helically around the axis of the operating element and in the first direction, the helical surface being used to convert the rotation of the operating element into the linear motion of the push rod.

[0021] In some embodiments, the manual operating mechanism further includes a rolling element, the first end face of which is provided with an arc-shaped groove, the arc-shaped groove being concentrically arranged with the axis of the operating element, the bottom surface of at least a portion of the arc-shaped groove forming the helical surface, the rolling element being rotatably accommodated in the arc-shaped groove, and the operating element pushing against the push rod through the rolling element.

[0022] In some embodiments, the arcuate groove includes a first groove segment and at least one second groove segment, wherein the bottom surface of the first groove segment forms the helical surface;

[0023] The first groove segment is connected to the at least one second groove segment, and the groove depth of the second groove segment remains unchanged;

[0024] When the rolling element moves relative to each other in the first groove, the operating element, the push rod, and the valve body move in tandem.

[0025] When the rolling element moves relative to the second groove, the push rod and the valve body remain stationary, and the operating element rotates relative to the push rod.

[0026] In some implementations, the damping recovery assembly includes a damping unit, which includes a one-way damper and a transmission gear. The transmission gear is coaxially arranged with the operating element, and the one-way damper has an output gear. The transmission gear and the output gear establish a power transmission.

[0027] In some implementations, both the push rod and the operating element move linearly along the first direction.

[0028] The operating table provided in this application embodiment allows for easy movement of the operating table when it needs to be moved. By applying external force to the manual operating mechanism, the valve body moves from the position of cutting off the unloading channel to the position of opening the unloading channel, thereby releasing the brakes on the casters. This facilitates easy movement of the operating table via the casters. After unlocking, the manual operating mechanism and valve body return to the position of cutting off the unloading channel without requiring further external force from the user. The damping return component provides a reset force that slows down the reset speed and extends the reset time, allowing the user sufficient time to move the operating table without instantaneous reset. The delayed reset achieved by the damping return component ensures sufficient unlocking time while preventing subsequent operating table locking operations from being affected. The operation is convenient and reliable, requiring no manual reset or subsequent checks from the user. Furthermore, even if the manual operating mechanism is accidentally activated during the movement of the operating table, the damping force prevents it from immediately resetting, ensuring high safety and reliability.

[0029] This application embodiment also provides an operating table, including:

[0030] Drive cylinder;

[0031] The unloading channel is connected to the drive cylinder;

[0032] A shut-off valve is disposed on the unloading channel and is used to open or close the unloading channel. The shut-off valve includes a valve seat and a valve body disposed within the valve seat.

[0033] A manual operating mechanism is used to move the valve body under the action of external force, thereby opening the unloading channel so that the drive cylinder can be unloaded through the unloading channel;

[0034] The recovery unit is used to drive the manual operating mechanism to reset when the external force is removed, so as to reset the valve body and shut off the unloading channel.

[0035] In some embodiments, the drive cylinder includes a drive chamber and a pressure medium supply channel, both of which are connected to the drive chamber. The pressure medium supply channel is used to supply pressure medium to the drive chamber when the valve body closes the unloading channel.

[0036] In some embodiments, the operating table includes one or more casters, and the drive cylinder is used to brake the casters. When the drive cylinder is unloaded through the unloading channel, the drive cylinder releases the brake on the casters.

[0037] In some embodiments, the manual operating mechanism includes an operating element and a push rod, the operating element pushing the valve body to move via the push rod; the push rod and the valve body are arranged along a first direction and move linearly along the first direction;

[0038] The operating element and the push rod are separably engaged in the first direction;

[0039] The recovery assembly includes a first reset member and a second reset member. The first reset member is used to provide a reset force that moves the push rod away from the valve body when the external force is removed. The second reset member is used to provide a force that resets the operating element when the external force is removed.

[0040] In some embodiments, the manual operating mechanism includes an operating element and a push rod, the operating element driving the valve body to move via the push rod;

[0041] The movement stroke of the operating element includes a drive stroke segment and at least one idle stroke segment;

[0042] The at least one empty travel segment is located at one end of the drive travel segment toward the unlocking direction and / or at one end away from the unlocking direction;

[0043] During the drive stroke, the operating element, the push rod, and the valve body move in tandem; during the idle stroke, the push rod and the valve body remain stationary, while the operating element moves relative to the push rod.

[0044] In some embodiments, the operating element is capable of rotating about the axis of the push rod in a first rotational direction under the action of an external force;

[0045] The push rod moves linearly along the first direction, and the operating element rotates around the center line of the push rod; a reversing structure is provided at the joint between the operating element and the push rod, and the reversing structure is used to convert the rotation of the operating element into the linear motion of the push rod.

[0046] In some embodiments, the actuating element includes a first end face, and the push rod includes a second end face, with the first end face and the second end face facing each other;

[0047] The reversing structure includes a helical surface disposed on the first end face and / or the second end face, the helical surface extending helically around the axis of the operating element and in the first direction, the helical surface being used to convert the rotation of the operating element into the linear motion of the push rod.

[0048] In some embodiments, the manual operating mechanism further includes a rolling element, the first end face of which is provided with an arc-shaped groove, the arc-shaped groove being concentrically arranged with the axis of the operating element, the bottom surface of at least a portion of the arc-shaped groove forming the helical surface, the rolling element being rotatably accommodated in the arc-shaped groove, and the operating element pushing against the push rod through the rolling element.

[0049] In some embodiments, the operating table further includes a damping unit for providing damping force to the manual operating mechanism during the reset process driven by the return unit.

[0050] When the operating table position needs to be adjusted, force is applied to the manual operating mechanism, causing the valve body to move from the position of cutting off the unloading channel to the position of opening the unloading channel. This allows the drive cylinder to release pressure through the unloading channel, unlocking the operating table and facilitating its movement and other position adjustments. After unlocking, the manual operating mechanism and valve body can be driven back to the position of cutting off the unloading channel by the return unit without the user needing to apply pressure again. This eliminates the need for manual reset and subsequent checks, reducing safety issues caused by users forgetting to reset, and ensuring high operational reliability. In this embodiment, the reset time of the manual operating mechanism and valve body can be extended by setting a free stroke, giving the user sufficient time to operate the operating table. Timed reset can also be achieved by setting a timer or other structure, or delayed reset can be achieved by setting a damping structure, further increasing reliability. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of a portion of the structure of an operating table according to an embodiment of this application;

[0052] Figure 2 for Figure 1 An exploded view of the structure shown.

[0053] Figure 3 for Figure 1 Another exploded view of the structure shown;

[0054] Figure 4 for Figure 1 Another exploded diagram of the structure shown;

[0055] Figure 5 for Figure 1 The diagram shows the structure from another perspective, with the manual operating mechanism in its initial position.

[0056] Figure 6 for Figure 5 A schematic diagram of the structure shown from another perspective;

[0057] Figure 7 for Figure 1 The diagram shows a structural schematic from another perspective, in which the manual operating mechanism rotates toward the unlocking direction;

[0058] Figure 8 for Figure 7 A schematic diagram of the structure shown from another perspective.

[0059] Explanation of reference numerals in the attached figures

[0060] 10-Manual operating mechanism; 11-Operating element; 11a-First end face; 11b-Arc groove; 11c-Helical surface; 11d-First groove segment; 11e-Second groove segment; 12-Push rod; 12a-Second end face; 13-Rolling element; 20-Damping return assembly; 21-First reset element; 22-Second reset element; 23-One-way damper; 231-Output gear; 24-Transmission gear; 30-Valve assembly; 31-Valve seat; 32-Valve body; 33-Elastic element. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0062] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this invention will not be described separately.

[0063] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0064] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0065] This application provides an embodiment of an operating table.

[0066] An operating table is a bed specifically designed for surgical procedures to provide patients with safe, stable, and adjustable support, facilitating the execution of various types of surgical procedures.

[0067] The operating table includes a base, one or more casters, a braking mechanism, and an unlocking mechanism.

[0068] One or more casters are mounted on the base, allowing the entire operating table to move.

[0069] The braking mechanism is connected to the unloading channel.

[0070] Please see Figures 1 to 8 The unlocking mechanism includes a manual operation mechanism 10, a damping recovery component 20, and a valve assembly 30 disposed on the unloading channel. The valve assembly 30 includes a valve seat 31 and a valve body 32 disposed within the valve seat 31. The valve body 32 is used to open or close the unloading channel.

[0071] The manual operating mechanism 10 is used to move in the unlocking direction under the action of external force, and drive the valve body 32 to move from the position of cutting off the unloading channel to the position of opening the unloading channel, so that the brake mechanism can unload through the unloading channel, thereby releasing the brake on the caster.

[0072] The damping return assembly 20 is used to store energy during the movement of the manual operating mechanism 10 toward the unlocking direction, and to provide a reset force to the manual operating mechanism 10 to reset the manual operating mechanism 10 and a damping force opposite to the reset force when the external force is removed, so that the manual operating mechanism 10 and the valve body 32 reset after a delay.

[0073] The base is responsible for bearing the load generated by the patient and doctor during operation, as well as the weight of all additional equipment. Casters are installed on the base so that the operating table can be easily moved when needed, allowing for quick adjustment of position and convenient transfer of patients.

[0074] Unloading channels are used to release or transfer loads.

[0075] It should be noted that braking the casters means that, in this state, the operating table cannot be moved by the casters; the operating table is in a fixed position. At this time, the casters may be on the ground but in a braked state, or the casters may be detached from the ground, thus preventing the operating table from moving. Releasing the caster brakes can be done either by releasing the brakes while the casters are still on the ground, or by making the casters re-engage with the ground from a position where they are not in contact with the ground, thereby releasing the brakes.

[0076] There are no restrictions on how the brakes on the casters are released.

[0077] For example, in some embodiments, the casters are always in contact with the ground, and the braking mechanism can directly act on the casters. By braking the casters through the braking mechanism, the operating table can be kept stationary when it is not necessary to move the operating table (e.g., during surgery), increasing safety. When the unloading channel is open, the pressure applied to the braking mechanism can be released, causing the braking mechanism to lose its braking effect on the casters, allowing the casters to rotate freely. When the unloading channel is closed, the pressure is not released, and the braking mechanism can apply a certain braking pressure to the casters, keeping them stationary.

[0078] In other embodiments, the operating table may also be provided with multiple outriggers. The outriggers are located at the bottom of the base and are driven by the drive cylinder of the braking mechanism. In this case, when the unloading channel is closed, the outriggers are in an extended state, the base and casters are raised, and the casters are lifted off the ground, thus achieving braking of the casters. When the braking mechanism unloads through the unloading channel, the outriggers are in a retracted state, the casters touch the ground and can rotate freely, thereby enabling the operation of the operating table to move.

[0079] For example, the unloading channel can be part of a hydraulic or pneumatic circuit. For instance, when the unloading channel is changed to a closed circuit, the pressure in the unloading channel is released, which can release the pressure on the braking mechanism and unlock the operating table; when the unloading channel is closed, the pressure on the braking mechanism will not be released through the unloading channel, and the operating table can be locked under the control of the control system.

[0080] The valve seat 31 serves as a fixed reference point for the installation and movement of the valve body 32. The valve body 32 can move within the valve seat 31 to open the unloading channel, thereby releasing the casters; or to close the unloading channel.

[0081] The manual operating mechanism 10 is used to drive the valve body 32 from the position of cutting off the unloading channel to the position of opening the unloading channel under the action of external force. The external force is transmitted to the valve body 32 through the manual operating mechanism 10, thereby causing the valve body 32 to move and realizing the transition from braking the caster to releasing the caster.

[0082] The external force here can be the force exerted by the hand or other forces; there are no restrictions on this.

[0083] The unlocking direction here refers to the direction of movement in the unloading channel, and does not specifically refer to a straight line.

[0084] The movement of the manual operating mechanism 10 can be linear, rotational, or a combination of linear and rotational movements, etc., and is not limited here.

[0085] When the manual operating mechanism 10 moves in the unlocking direction, the damping return component 20 can accumulate energy during this process. For example, energy can be accumulated by the manual operating mechanism 10 driving the damping return component 20 to move. Thus, when the external force is removed, the manual operating mechanism 10 loses the external force, and the damping return component 20 applies a force to the manual operating mechanism 10. This force includes a reset force and a damping force. The reset force is the force that causes the manual operating mechanism 10 to move from the unlocking direction to the reset direction, even after the manual operating mechanism 10 returns to its initial position. The damping force is the damping applied during the process of the manual operating mechanism 10 moving from the unlocking direction to the reset direction under the action of the reset force, thereby slowing down the reset speed of the manual operating mechanism 10 and prolonging the reset time. Here, the initial position is the stable position of the manual operating mechanism 10 when it is not subjected to external force. At this time, the operating table can be controlled by the control system to keep the casters in a state of contact with the ground and being braked, or in a state of being off the ground and being braked.

[0086] For example, during the movement of the manual operating mechanism 10 in the unlocking direction, the damping force applied by the damping return component 20 to the manual operating mechanism 10 is zero or almost zero, that is, the damping return component 20 does not obstruct the movement of the manual operating mechanism 10 in the unlocking direction, so as to make unlocking smoother and more convenient.

[0087] It should be noted that the damping return component 20 provides damping force, which only slows down the reset speed of the manual operating mechanism 10, without affecting the reset result of the manual operating mechanism 10. In other words, even with the damping force, the manual operating mechanism 10 can return to its initial position.

[0088] In this way, by setting the damping force, the reset time can be adjusted to control the time from the position of opening the unloading channel to the position of closing the unloading channel, thereby controlling the free rotation time of the casters, thus controlling the movement time of the operating table and increasing operational reliability.

[0089] It should be noted that the reset force and damping force applied by the damping recovery component 20 act on the manual operating mechanism 10. The valve body 32 can be reset together with the manual operating mechanism 10 under the drive of the manual operating mechanism 10, or it can be reset together with the manual operating mechanism 10 under the reset action of other structures. As long as the manual operating mechanism 10 and the valve body 32 can achieve delayed reset, there are no restrictions here.

[0090] The operating table provided in this embodiment allows for easy movement of the operating table when the user applies external force to the manual operating mechanism 10. This causes the valve body 32 to move from the position where the unloading channel is closed to the position where the unloading channel is open, thereby releasing the brakes on the casters. This facilitates easy movement of the operating table via the casters. After unlocking, the user does not need to apply external force again. The damping return component 20 provides a reset force that returns the manual operating mechanism 10 and the valve body 32 to the position where the unloading channel is closed. The damping force slows down the reset speed and prolongs the reset time, thus allowing the user sufficient time to move the operating table without instantaneous reset. The delayed reset achieved by the damping return component 20 ensures sufficient unlocking time and prevents subsequent operating table locking operations from being affected. The operation is convenient and reliable, requiring no manual reset or subsequent inspection by the user. Furthermore, even if the manual operating mechanism 10 is accidentally activated during the movement of the operating table, the damping force will prevent the manual operating mechanism 10 from immediately resetting, ensuring high safety and reliability.

[0091] In some embodiments, please refer to Figures 5 to 8 The valve body 32 moves linearly within the valve seat 31 in a first direction. The manual operating mechanism 10 is separably abutted against the valve body 32 in the first direction. The valve assembly 30 also includes an elastic element 33, which provides a spring force to the valve body 32 toward the manual operating mechanism 10.

[0092] That is, the valve body 32 generates a linear displacement along a first direction within the valve seat 31. Here, the first direction can be consistent with the extension direction of the valve body 32. The opening and closing of the unloading channel is achieved by the linear movement along the first direction.

[0093] The manual operating mechanism 10 and the valve body 32 are separably abutted in the first direction, which means that the manual operating mechanism 10 can be separated from the valve body 32. When unlocking is required, under the action of external force, the manual operating mechanism 10 can abut against the valve body 32, thereby applying a force to the valve body 32 and causing the valve body 32 to move. At this time, the elastic element 33 deforms and stores energy.

[0094] After the external force is removed, the damping return component 20 applies a reset force and a damping force to the manual operating mechanism 10, causing the manual operating mechanism 10 to move in the reset direction. At this time, the manual operating mechanism 10 and the valve body 32 are not released from contact. During the process of the manual operating mechanism 10 moving in the reset direction, the elastic element 33 can release its elastic potential energy, causing the valve body 32 to also move in the first direction until the manual operating mechanism 10 moves to the initial position. At this time, the valve body 32 can also return to the position of cutting off the unloading channel and separate from the manual operating mechanism 10.

[0095] Here, the separation of the manual operating mechanism 10 from the valve body 32 can be either that the manual operating mechanism 10 and the valve body 32 do not contact each other, or that they contact each other but do not generate a contacting force; there is no limitation here.

[0096] It should be noted that in this embodiment, the elastic member 33 applies a spring force to the valve body 32 to move toward the manual operating mechanism 10, so that the valve body 32 can also be reset during the reset process of the manual operating mechanism 10. Under the damping force of the damping return component 20, the reset speed of the manual operating mechanism 10 is slowed down, and the reset speed of the valve body 32 is also slowed down simultaneously, so as to achieve delayed reset.

[0097] In this embodiment, the manual operating mechanism 10 and the valve body 32 are detachably abutted against each other along the first direction. The valve body 32 can achieve delayed reset by following the manual operating mechanism 10 through the elastic element 33. Furthermore, the detachable operation can reduce the probability of the valve body 32 moving due to accidental contact with the manual operating mechanism 10. At the same time, it can also reduce the reset force that the damping return component 20 needs to apply to the manual operating mechanism 10, increase the ease of operation, and make it more convenient when the manual operating mechanism 10 needs to be repaired or replaced.

[0098] The specific construction of the elastic element 33 is not limited; for example, please refer to [link to relevant documentation]. Figures 5 to 8 The elastic element 33 can be a spring.

[0099] The specific construction of the damping recovery component 20 is not limited.

[0100] In some embodiments, the damping recovery assembly 20 includes a damping unit and a reset unit. The reset unit is used to apply a reset force to the manual operating mechanism 10 when the external force is removed, and the damping unit is used to apply a damping force to the manual operating mechanism 10 during the reset process driven by the reset unit.

[0101] Preferably, the damping unit includes a unidirectional damper 23.

[0102] The manual operating mechanism 10 is reset to its initial position by applying a reset force through the reset unit. The damping unit applies a damping force during the reset process of the manual operating mechanism 10 driven by the reset unit, which slows down the reset speed of the manual operating mechanism 10 and the valve body 32 and prolongs the reset time. This allows the casters sufficient time to rotate freely to move the operating table, while not hindering the subsequent locking operation of the operating table, thus facilitating stable surgery. Of course, the damping unit also makes the reset process of the manual operating mechanism 10 and the valve body 32 more stable, reducing the impact and vibration during the reset process.

[0103] Here, the unidirectional damper 23 is used to control the speed of movement of the moving part in one direction, while allowing free or almost resistance-free movement in the opposite direction.

[0104] That is, the one-way damper 23 can apply directional damping. When the moving part moves in the damping direction, the one-way damper 23 will apply resistance to slow down the movement speed; when the moving part moves in the non-damped direction, the resistance provided by the one-way damper 23 is very small or almost non-existent.

[0105] Thus, in this embodiment, the damping unit includes a unidirectional damper 23, which enables the damping unit to apply no damping force or apply a very small damping force (negligible) when the manual operating mechanism 10 moves in the unlocking direction. In this way, the movement of the manual operating mechanism 10 in the unlocking direction can be smooth and relatively fast, which facilitates transient unlocking and increases the convenience of operation.

[0106] The specific construction of the unidirectional damper 23 is not limited.

[0107] For example, the one-way damper 23 may include a cylinder and a piston, the piston reciprocating within the cylinder, and a seal between the piston and the cylinder to ensure that fluid can only flow through a specific path. The one-way damper 23 may use hydraulic oil or gas as the working medium.

[0108] The specific structure of the manual operating mechanism 10 is not limited.

[0109] In some embodiments, please refer to Figures 2 to 8The manual operating mechanism 10 includes a push rod 12 and an operating element 11. At least a portion of the push rod 12 is inserted into the valve seat 31 and abuts against the valve body 32 in a first direction. The operating element 11 pushes the valve body 32 to move linearly in the first direction through the push rod 12. The operating element 11 can move relative to the push rod 12.

[0110] When unlocking is required, an external force is applied to the operating element 11, which is then transmitted to the push rod 12, causing the push rod 12 to move linearly in the first direction, thereby pushing the valve body 32 to move linearly in the first direction. In this way, there is no need for motion conversion from the push rod 12 to the valve body 32, making the movement simpler and more convenient, and also facilitating the reset of the push rod 12 and the valve body 32.

[0111] The contact between the push rod 12 and the valve body 32 can be separable or non-separable. For example, the push rod 12 and the valve body 32 can be separable.

[0112] The operating element 11 can move relative to the push rod 12, that is, there will be relative movement between the operating element 11 and the push rod 12. When the operating element 11 moves relative to the push rod 12, the operating element 11 will not drive the push rod 12 to push the valve body 32 to move. That is, during this process, the movement of the operating element 11 is equivalent to the idle stroke.

[0113] In this embodiment, the operating element 11 moves relative to the push rod 12, meaning that the operating element 11 can generate a free stroke, i.e., only the operating element 11 moves while the push rod 12 and valve body 32 do not move. In this way, on the one hand, during the reset process, the free stroke of the operating element 11 can further extend the reset time, allowing more time for operating table movement operations; on the other hand, the free stroke design ensures that even if the operating element 11 continues to move in the unlocking direction after unlocking, the push rod 12 will not push the valve body 32 to move, increasing safety in use.

[0114] In some embodiments, the movement stroke of the operating element 11 includes a drive stroke segment and at least one idle stroke segment.

[0115] At least one empty travel segment is located at one end of the drive travel segment toward the unlocking direction and / or at the end away from the unlocking direction.

[0116] During the drive stroke, the operating element 11, push rod 12, and valve body 32 are linked together; during the idle stroke, the push rod 12 and valve body 32 remain stationary, while the operating element 11 moves relative to the push rod 12.

[0117] Here, the number of empty travel segments can be one or more.

[0118] When there is only one empty travel segment, the empty travel segment can be located at the end of the drive travel segment facing the unlocking direction, or at the end of the drive travel segment away from the unlocking direction.

[0119] When there are multiple empty travel segments, all empty travel segments can be located at the end of the drive travel segment facing the unlocking direction, or all empty travel segments can be located at the end of the drive travel segment away from the unlocking direction. Of course, some empty travel segments can be located at the end of the drive travel segment facing the unlocking direction, and other empty travel segments can be located at the end of the drive travel segment away from the unlocking direction.

[0120] For example, there can be two empty travel segments: one empty travel segment is located at the end of the drive travel segment facing the unlocking direction, and the other empty travel segment is located at the end of the drive travel segment away from the unlocking direction.

[0121] Here, the operating stroke of the operating element 11 is the stroke that the operating element 11 takes from the initial position to the point where the unloading channel is opened, and then back to the initial position.

[0122] Here, the drive stroke segment refers to the segment in which the operating element 11 moves in the unlocking direction and applies a driving force to the push rod 12. During the drive stroke segment, the operating element 11, the push rod 12, and the valve body 32 are linked together. That is, at this time, the operating element 11 will not have any idle stroke, and the movement of the operating element 11 can be transmitted to the push rod 12, which in turn drives the valve body 32 to move, thereby causing the valve body 32 to move in the direction of guiding the unloading channel. The operating element 11 can unlock the caster through the drive stroke segment.

[0123] The idle stroke segment is the stroke during which the operating element 11 moves relative to the push rod 12 and the valve body 32. During the idle stroke segment, the push rod 12 and the valve body 32 do not move, that is, they do not move or displace along the first direction. The movement of the operating element 11 will not exert a driving force on the push rod 12.

[0124] The empty stroke section is located at the end of the drive stroke section facing the unlocking direction. This means that after the operating element 11 passes through the drive stroke section, it will pass through the empty stroke section when it continues to move in the unlocking direction. At this time, the design of the empty stroke section allows the operating element 11 to continue moving in the unlocking direction without causing the push rod 12 and the valve body 32 to move, even after the operating element 11 has already connected the valve body 32 to the unloading channel. This keeps the push rod 12 and the valve body 32 in their current positions, increasing operational safety and reducing the impact on the push rod 12 and the valve body 32. At the same time, the empty stroke section can provide a buffer time for slow reset when returning in the opposite direction. The reset will only begin after the buffer time when the external force is removed, increasing the reliability of the reset.

[0125] The empty travel segment is located at the end of the drive travel segment away from the unlocking direction. This means that the empty travel segment is located at the end of the drive travel segment facing the reset direction. When the damping return component 20 applies reset force and damping force to the operating element 11, the operating element 11 will pass through the empty travel segment after passing through the drive travel segment along the reset direction. This prolongs the reset time of the operating element 11, allowing more time for operating table movement. At the same time, the empty travel segment can reduce misoperation, so that the unlocking will only begin after the operating element 11 has moved a certain distance.

[0126] In some embodiments, please refer to Figures 1 to 8 The operating element 11 and the push rod 12 are separably engaged in abutment in a first direction. The reset unit includes a first reset member 21 and a second reset member 22. The first reset member 21 provides a reset force to cause the push rod 12 to perform a reset movement, and the second reset member 22 provides a reset force to cause the operating element 11 to perform a reset movement. The damping unit is used to provide damping force to the operating element 11 and / or the push rod 12 during the reset movement.

[0127] In this embodiment, the operating element 11 and the push rod 12 can be separated. The operating element 11 transmits driving force through contact with the push rod 12. In the initial position, the operating element 11 can be separated from the push rod 12, reducing the risk of accidental contact and increasing operational safety. At the same time, it is also convenient to operate when the operating element 11 and / or the push rod 12 need to be repaired or replaced.

[0128] The separation of the operating element 11 and the push rod 12 can be either that the operating element 11 and the push rod 12 do not contact each other, or that the operating element 11 and the push rod 12 are in contact but do not generate a contacting force.

[0129] The reset force applied by the damping return assembly 20 to the manual operating mechanism 10 includes the reset force applied by the first reset member 21 to the push rod 12 and the reset force applied by the second reset member 22 to the operating element 11.

[0130] By applying a reset force to the push rod 12 by the first reset member 21 and a reset force to the operating element 11 by the second reset member 22, the push rod 12 and the operating element 11 can be reset under the action of the first reset member 21 and the second reset member 22 respectively when they are separable and abutting. This increases the reliability of the reset. In addition, it can also reduce the reset pressure when using a single reset member and reduce the reset energy required to be accumulated during the unlocking process.

[0131] The damping unit can provide damping force to the operating element 11 during the reset movement, thereby slowing down the reset movement of the push rod 12 and the valve body 32 by slowing down the reset movement speed of the operating element 11. In this case, one end of the second reset member 22 can be connected to the operating element 11 and the other end can be connected to the damping unit.

[0132] The damping unit can also provide damping force to the push rod 12 during the reset process, thereby slowing down the reset movement of the valve body 32 by reducing the reset movement of the push rod 12. In this case, the operating element 11 can be separated from the push rod 12 and reset in advance under the reset force of the second reset member 22, without any restrictions. In this case, one end of the first reset member 21 can be connected to the push rod 12, and the other end can be connected to the damping unit.

[0133] The damping unit can also simultaneously provide damping force to both the operating element 11 and the push rod 12 during the reset process, thereby slowing down the reset movement of both the push rod 12 and the operating element 11, and consequently slowing down the reset movement of the valve body 32, so as to achieve synchronous reset. In this case, the damping unit can be connected to both the first reset member 21 and the second reset member 22.

[0134] For example, in some embodiments, one end of the second reset member 22 is connected to the operating element 11 and the other end is connected to the damping unit, which is used to apply a damping force to the operating element 11 during the reset movement of the operating element 11.

[0135] The specific construction of the first reset member 21 and the second reset member 22 is not limited; for example, please refer to [reference needed]. Figures 4 to 8 The first reset element 21 can be a spring, which is sleeved on the outer periphery of the push rod 12 and applies a reset force toward the operating element 11 to the push rod 12.

[0136] For example, please refer to Figures 2 to 8 The second reset element 22 can be a torsion spring, which is sleeved on the outer periphery of the operating element 11, with one end connected to the operating element 11 and the other end connected to the damping unit.

[0137] The movement mode of the operating element 11 is not limited; it can be linear motion, rotation, or a combination of linear motion and rotation. No restrictions are imposed here.

[0138] For example, in some embodiments, the push rod 12 moves linearly along a first direction, the operating element 11 rotates about the center line of the push rod 12, and a reversing structure is provided at the mating point of the operating element 11 and the push rod 12. The reversing structure is used to convert the rotation of the operating element 11 into the linear motion of the push rod 12.

[0139] In this embodiment, the operating element 11 is a knob-type structure. The operating element 11 can rotate around the center line of the push rod 12 as the rotation axis, and through the reversing structure, it converts its own rotation into linear motion of the push rod 12 along the first direction, thereby driving the valve body 32 to move linearly along the first direction. By converting rotation into linear motion, a small input force can be converted into a large output force. The user can easily apply external force to the operating element 11, making the operation simple and convenient.

[0140] The specific construction of the commutation structure is not limited.

[0141] In some embodiments, please refer to Figures 3 to 8 The operating element 11 includes a first end face 11a, and the push rod 12 includes a second end face 12a. The first end face 11a and the second end face 12a face each other. The reversing structure includes a helical surface 11c disposed on the first end face 11a and / or the second end face 12a. The helical surface 11c extends helically around the axis of the operating element 11 and in a first direction. The helical surface 11c is used to convert the rotation of the operating element 11 into the linear motion of the push rod 12.

[0142] That is, the operating element 11 and the push rod 12 are engaged through the first end face 11a and the second end face 12a.

[0143] Here, the helical surface 11c can include various cases. For example, the helical surface 11c can be a cam surface, in which case at least a portion of the surface of the first end face 11a and / or the second end face 12a is formed as an irregular surface; the helical surface 11c can also be a helical structure formed by changing the groove wall structure of the groove provided on the first end face 11a and / or the second end face 12a, in which case the first end face 11a and / or the second end face 12a is formed as a regular plane, for example, the first end face 11a and / or the second end face 12a is perpendicular to the axis of the operating element 11, and a groove is provided on the first end face 11a and / or the second end face 12a, and the depth of the groove changes continuously to form the cam surface helical surface 11c.

[0144] The spiral surface 11c can be set only on the first end face 11a, or only on the second end face 12a. Of course, it can also be set on both the first end face 11a and the second end face 12a.

[0145] The helical surface 11c extends helically around the axis of the operating element 11 in the first direction. That is, when the operating element 11 and the push rod 12 cooperate through the helical surface 11c, the setting of the helical surface 11c will change the movement distance of the push rod 12 in the first direction, thereby realizing the movement of the push rod 12 in the first direction.

[0146] In this embodiment, by setting the helical surface 11c, when the operating element 11 drives the push rod 12 to move, the rotation of the operating element 11 is converted into the linear movement of the push rod 12. This method is simple and can simplify the transmission mechanism. Furthermore, the input force can be amplified by an appropriate pitch design, so that a small rotational force can generate a large linear thrust or pull force. Of course, it is also convenient to adjust the moving speed of the push rod 12 to meet different application requirements.

[0147] In some embodiments, please refer to Figures 2 to 8The manual operating mechanism 10 also includes a rolling element 13. The first end face 11a is provided with an arc-shaped groove 11b. The arc-shaped groove 11b is concentrically arranged with the axis of the operating element 11. At least a portion of the groove bottom surface of the arc-shaped groove 11b forms a helical surface 11c. The rolling element 13 is rotatably accommodated in the arc-shaped groove 11b. The operating element 11 pushes against the push rod 12 through the rolling element 13.

[0148] Here, the concentric arrangement of the arc-shaped groove 11b and the axis of the operating element 11 means that the centerline (geometric center) of the arc-shaped groove 11b and the axis of rotation of the operating element 11 lie at the same geometric center point. That is, if the axis of the operating element 11 is considered as the central axis of a cylinder, the arc-shaped groove 11b is a ring-shaped path around the surface of this cylinder, and the center of this path coincides perfectly with the center of the cylinder. Regardless of how the arc-shaped groove 11b bends or extends, it always surrounds the axis of the operating element 11, and the outer diameter of the arc-shaped groove 11b remains constant, meaning that the distance from any point on the outer arc of the arc-shaped groove 11b to the axis of the operating element 11 is equidistant.

[0149] Thus, when the rolling element 13 moves within the arcuate groove 11b, its relative position to the axis of the operating element 11 remains constant throughout its movement. This ensures the accuracy and smoothness of motion conversion and reduces additional vibration or wear caused by eccentricity. The concentric arrangement of the arcuate groove 11b also allows the rolling element 13 to move more smoothly along the groove, maintain the correct motion path, improve motion efficiency, and reduce motion wear.

[0150] The rolling element 13 has a small contact area with the arc groove 11b and the push rod 12, which is a point contact or line contact. This helps to reduce wear and reduce the friction between the rolling element 13 and the push rod 12, so that the rotation of the operating element 11 can be transmitted to the push rod 12 more quickly, increasing the reliability of the movement.

[0151] For example, the scroll member 13 can be a ball.

[0152] At least a portion of the bottom surface of the arc-shaped groove 11b forms a helical surface 11c. Here, a portion of the arc-shaped groove 11b may form a helical surface 11c, while another portion may be a non-helical surface 11c. At the helical surface 11c, the groove depth of the arc-shaped groove 11b changes axially. The rolling element 13 contacts the helical surface 11c, thus pushing the push rod 12 and causing axial displacement. At the non-helical surface 11c, the groove depth of the arc-shaped groove 11b does not change. The rolling element 13 moves in this section, thus not transmitting the driving force of the operating element 11 to the push rod 12. In this section, the operating element 11 can move relative to the push rod 12, achieving a no-stroke. Of course, the arc groove 11b can also be entirely formed as a spiral surface 11c. In this case, by designing the groove depth of the spiral surface 11c, the rolling element 13 can be prevented from pushing against the push rod 12, thereby realizing the movement of the operating element 11 relative to the push rod 12 and achieving the idle stroke. Other methods can also be used, which are not limited here.

[0153] In some embodiments, please refer to Figure 3 The arc-shaped groove 11b includes a first groove segment 11d and at least one second groove segment 11e, and the bottom surface of the first groove segment 11d forms a spiral surface 11c.

[0154] The first groove segment 11d is connected to at least one second groove segment 11e, and the groove depth of the second groove segment 11e remains unchanged.

[0155] When the rolling element 13 moves relative to the first groove segment 11d, the operating element 11, push rod 12, and valve body 32 move in unison.

[0156] When the rolling element 13 moves relative to the second groove 11e, the push rod 12 and the valve body 32 remain stationary, and the operating element 11 rotates relative to the push rod 12.

[0157] Here, the movement of the rolling element 13 can be switched between the first groove segment 11d and the second groove segment 11e by rotating the operating element 11.

[0158] When the rotating operating element 11 causes the rolling element 13 to move within the first groove segment 11d, this constitutes the driving stroke segment of the operating element 11. At this time, through the contact between the rolling element 13 and the helical surface 11c, the position of the rolling element 13 relative to the operating element 11 changes axially. When unlocking is required, the size of the rolling element 13 protruding from the arc-shaped groove 11b changes, thereby pushing the push rod 12 to undergo linear displacement along the first direction. During reset, the movement of the rolling element 13 within the first groove segment 11d also changes the size of the rolling element 13 protruding from the arc-shaped groove 11b, thereby gradually achieving reset under the action of the damping return assembly 20.

[0159] When the rotating operating element 11 causes the rolling element 13 to move within the second groove section 11e, this is the idle stroke section of the operating element 11. At this time, the position of the rolling element 13 relative to the operating element 11 along the axial direction does not change. The operating element 11 rotates itself, and the rolling element 13 also rotates, but it does not exert a pushing effect on the push rod 12. The push rod 12 and the valve body 32 remain stationary, so that the manual operating mechanism 10 has sufficient reset time, or even if the operating element 11 is rotated when the valve body 32 is already in the unlocked position, the push rod 12 will not move, thus increasing the reliability and safety of the operation.

[0160] The number of second slots 11e can be one or more, and there is no restriction here.

[0161] In some embodiments, please refer to Figures 1 to 8 The damping unit includes a one-way damper 23 and a transmission gear 24. The transmission gear 24 is coaxially arranged with the operating element 11. The one-way damper 23 has an output gear 231, and the transmission gear 24 and the output gear 231 establish a power transmission.

[0162] Here, the transmission gear 24 and the operating element 11 are coaxially arranged, meaning that the transmission gear 24 and the operating element 11 share the same axis of rotation, which facilitates synchronized and non-offset rotational movements between the two. The transmission gear 24 establishes an output transmission with the output gear 231 of the one-way damper 23, meaning that when reset is required, the damping force of the one-way damper 23 can be transmitted to the transmission gear 24 through the output gear 231, and then to the operating element 11.

[0163] Understandably, when the operating element 11 rotates in the unlocking direction, it drives the transmission gear 24 to rotate, and through the output gear 231, it drives the one-way damper 23 to rotate. However, at this time, the one-way damper 23 does not apply damping force to the operating element 11 or applies very little damping force. The one-way damper 23 does not slow down the pushing speed of the push rod 12, so that the unlocking operation can be relatively fast. When reset is required, the reset force causes the operating element 11 to rotate in the opposite direction. At this time, when the transmission gear 24 and the one-way damper 23 rotate in the opposite direction, the one-way damper 23 outputs damping force through the output gear 231, and acts on the operating element 11 through the transmission gear 24, thereby slowing down the reverse rotation speed of the operating element 11, extending the reset time, and realizing delayed reset.

[0164] In this embodiment, the operating element 11 and the one-way damper 23 are connected by the transmission gear 24, so that the unlocking efficiency is not affected during the unlocking movement, and the reset is reliably delayed during the reset movement. At the same time, the reset speed can be adjusted by setting the transmission gear 24 and the one-way damper 23, and the reset reliability is high.

[0165] In other embodiments, both the push rod 12 and the operating element 11 move linearly along a first direction.

[0166] In other words, both the push rod 12 and the operating element 11 generate linear displacement along the first direction. There is no motion conversion between the push rod 12 and the operating element 11, and no motion conversion is required. The operating element 11 pushes the push rod 12 to move linearly through its own linear displacement. The motion mode is simple, and the cooperation between the push rod 12 and the operating element 11 is also relatively simple.

[0167] In this embodiment, the operating element 11 can be a press-type structure.

[0168] It is understandable that when both the push rod 12 and the operating element 11 move linearly along the first direction, the method by which the operating element 11 moves relative to the push rod 12 to generate a free stroke is not limited. The structure of the operating element 11 can be configured such that if the operating element 11 continues to push the push rod 12 after it reaches the unlock position, it will not cause the push rod 12 to continue moving, or during the reset process, the operating element 11 needs to move a free stroke to further extend the reset time.

[0169] This application also provides an operating table.

[0170] The operating table includes a drive cylinder, as well as the unloading channel, shut-off valve, manual operation mechanism 10, and return unit mentioned above.

[0171] The unloading channel is connected to the drive cylinder.

[0172] The gate valve is installed on the unloading channel and is used to open or close the unloading channel. The gate valve includes a valve seat 31 and a valve body 32 installed in the valve seat 31.

[0173] The manual operating mechanism 10 is used to move under the action of external force to drive the valve body 32 to move, thereby opening the unloading channel of the valve body 32 so that the drive cylinder can be unloaded through the unloading channel.

[0174] The reset unit is used to drive the manual operating mechanism 10 to reset when the external force is removed, so as to reset the valve body 32 and cut off the unloading channel.

[0175] Here, the drive cylinder can serve as part of the actuator, providing power to adjust and lock the position of the operating table.

[0176] For example, the drive cylinder can extend and retract by the pressure of hydraulic oil to adjust the operating table.

[0177] The unloading channel can quickly release the pressure in the drive cylinder under certain conditions. When the unloading channel is open, the drive cylinder can unload through the unloading channel and release the lock on the operating table. When the unloading channel is closed, the drive cylinder can realize the normal locking and unlocking of the operating table under the control of the control system.

[0178] The shut-off valve opens or closes the unloading channel by moving the valve body 32 relative to the valve seat 31, so that the operating table can be unlocked or reset. Here, the shut-off valve can be equivalent to the valve assembly 30 described above.

[0179] Here, by applying external force to the manual operating mechanism 10, the valve body 32 can be moved, thereby opening the unloading channel of the valve body 32, facilitating the adjustment of the operating table position, such as transferring the patient. The external force can be a manual force or other forms of force, which are not limited here. The movement of the manual operating mechanism 10 can be a movement, a rotation, or a combination of both, which are not limited here.

[0180] After the external force is removed, the recovery unit can apply a reset force to the manual operation mechanism 10, so that the manual operation mechanism 10 is reset and the valve body 32 is reset to the position of the cut-off unloading channel, which facilitates operations such as surgery.

[0181] The operating table provided in this embodiment allows for position adjustments when the operating table needs to be moved. By applying force to the manual operating mechanism 10, the valve body 32 moves from the position of the cut-off unloading channel to the position of the open unloading channel. This causes the drive cylinder to release pressure through the unloading channel, unlocking the operating table and facilitating position adjustments such as moving the operating table. After unlocking, the manual operating mechanism 10 and valve body 32 can be returned to the cut-off unloading channel position via the return unit without user intervention. This eliminates the need for manual reset and subsequent checks, reducing safety issues caused by users forgetting to reset, and ensuring high operational reliability. In this embodiment, the reset time of the manual operating mechanism 10 and valve body 32 can be extended by setting a free stroke, allowing the user sufficient time to operate the operating table. Timed reset can also be achieved by setting a timer or other structure, or delayed reset can be achieved by setting a damping structure, further increasing reliability.

[0182] In some embodiments, the drive cylinder includes a drive chamber and a pressure medium supply channel. Both the pressure medium supply channel and the unloading channel are connected to the drive chamber. The pressure medium supply channel is used to supply pressure medium to the drive chamber when the valve body 32 closes the unloading channel.

[0183] Here, the pressure medium can be hydraulic oil or gas. For example, the pressure medium is hydraulic oil.

[0184] The pressure medium supply channel can be connected to an external pressure source, such as a hydraulic pump. When the unloading channel is closed by valve body 32, the pressure medium is introduced into the drive chamber to provide pressure to the drive chamber so that the drive chamber locks the operating table. When the unloading channel is opened by the shut-off valve, the unloading channel is opened and the pressure medium in the drive chamber can flow out through the unloading channel, stopping the pressure supply and unlocking the operating table.

[0185] In this embodiment, the coordination of the drive chamber, the pressure medium supply channel, and the unloading channel enables the operating table to be flexibly adjusted under different conditions, thereby improving the safety and adjustment reliability of the operating table.

[0186] In some embodiments, the operating table includes one or more casters, and a drive cylinder is used to brake the casters. When the drive cylinder is unloaded through an unloading channel, the drive cylinder releases the brake on the casters.

[0187] Here, braking the caster includes both applying force to the caster when it is in contact with the ground to prevent it from turning, and also preventing the caster from contacting the ground. In this case, the caster can turn, but it is not in contact with the ground, and is also in a braking state.

[0188] Casters allow the operating table to be moved easily when needed, facilitating quick repositioning and patient transfer.

[0189] The drive cylinder can be used in conjunction with the casters. By braking the casters with the drive cylinder, the operating table can be kept stationary when it is not necessary to move (e.g., during surgery), increasing safety. When the unloading channel is opened in valve body 32, the drive cylinder can release the pressure on the casters through the unloading channel. The drive cylinder loses its braking effect on the casters, allowing the casters to rotate freely, thus achieving quick unlocking of the casters.

[0190] In this embodiment, the unloading channel is opened or closed by the valve body 32 to realize the release and braking of the caster by the drive cylinder, which is simple and convenient to control.

[0191] In some embodiments, please refer to Figures 2 to 8 The manual operating mechanism 10 includes an operating element 11 and a push rod 12. The operating element 11 pushes the valve body 32 to move through the push rod 12. The push rod 12 and the valve body 32 are arranged along a first direction and move linearly along the first direction.

[0192] The operating element 11 and the push rod 12 are detachably engaged in abutment in a first direction.

[0193] The recovery assembly includes a first reset member 21 and a second reset member 22. The first reset member 21 is used to provide a reset force that moves the push rod 12 away from the valve body 32 when the external force is removed. The second reset member 22 is used to provide a force that resets the operating element 11 when the external force is removed.

[0194] Here, when unlocking is required, an external force is applied to the operating element 11, and then transmitted to the push rod 12 through the operating element 11, causing the push rod 12 to move linearly in the first direction, thereby pushing the valve body 32 to move linearly in the first direction. In this way, there is no need for motion conversion from the push rod 12 to the valve body 32, making the movement simpler and more convenient, and also facilitating the reset of the push rod 12 and the valve body 32.

[0195] The push rod 12 and the valve body 32 can be in a non-separable abutting fit or a separable abutting fit. For example, the push rod 12 and the valve body 32 can be separably abutting in the first direction, which can reduce the probability of the valve body 32 moving due to accidental contact with the operating element 11. At the same time, it can also reduce the reset force that the first reset member 21 needs to apply to the push rod 12, increase the convenience of operation, and make it more convenient when the push rod 12 needs to be repaired or replaced.

[0196] The operating element 11 and the push rod 12 can be separated. The operating element 11 transmits driving force through contact with the push rod 12. In the initial position, the operating element 11 can be separated from the push rod 12, reducing the risk of accidental contact and increasing operational safety. At the same time, it is also convenient to operate when the operating element 11 and / or the push rod 12 need to be repaired or replaced.

[0197] Here, the operating element 11 is separated from the push rod 12. This can mean that the operating element 11 and the push rod 12 do not contact each other, or that the operating element 11 and the push rod 12 are in contact but do not generate a contacting force.

[0198] The reset force applied by the reset unit to the manual operating mechanism 10 includes the reset force applied by the first reset member 21 to the push rod 12 and the reset force applied by the second reset member 22 to the operating element 11.

[0199] By applying a reset force to the push rod 12 by the first reset member 21 and a reset force to the operating element 11 by the second reset member 22, the push rod 12 and the operating element 11 can be reset under the action of the first reset member 21 and the second reset member 22 respectively when they are separable and abutting. This increases the reliability of the reset. In addition, it can also reduce the reset pressure when using a single reset member and reduce the reset energy required to be accumulated during the unlocking process.

[0200] The specific construction of the first reset member 21 and the second reset member 22 is not limited; for example, please refer to [reference needed]. Figures 4 to 8 The first reset element 21 can be a spring, which is sleeved on the outer periphery of the push rod 12.

[0201] For example, please refer to Figures 2 to 8 The second reset element 22 can be a torsion spring, which is sleeved on the outer periphery of the operating element 11 and rotates with the operating element 11.

[0202] In some embodiments, the movement stroke of the operating element 11 includes a drive stroke segment and at least one idle stroke segment.

[0203] At least one empty travel segment is located at one end of the drive travel segment toward the unlocking direction and / or at the end away from the unlocking direction.

[0204] During the drive stroke, the operating element 11, push rod 12, and valve body 32 are linked together; during the idle stroke, the push rod 12 and valve body 32 remain stationary, while the operating element 11 moves relative to the push rod 12.

[0205] Here, the number of empty travel segments can be one or more.

[0206] When there is only one empty travel segment, the empty travel segment can be located at the end of the drive travel segment facing the unlocking direction, or at the end of the drive travel segment away from the unlocking direction.

[0207] When there are multiple empty travel segments, all empty travel segments can be located at the end of the drive travel segment facing the unlocking direction, or all empty travel segments can be located at the end of the drive travel segment away from the unlocking direction. Of course, some empty travel segments can be located at the end of the drive travel segment facing the unlocking direction, and other empty travel segments can be located at the end of the drive travel segment away from the unlocking direction.

[0208] For example, there can be two empty travel segments: one empty travel segment is located at the end of the drive travel segment facing the unlocking direction, and the other empty travel segment is located at the end of the drive travel segment away from the unlocking direction.

[0209] Here, the operating stroke of the operating element 11 is the stroke that the operating element 11 takes from the initial position to the point where the unloading channel is opened, and then back to the initial position.

[0210] Here, the drive stroke segment refers to the segment in which the operating element 11 moves in the unlocking direction and applies a driving force to the push rod 12. During the drive stroke segment, the operating element 11, the push rod 12, and the valve body 32 are linked together. That is, at this time, the operating element 11 will not have any idle stroke, and the movement of the operating element 11 can be transmitted to the push rod 12, which in turn drives the valve body 32 to move, thereby causing the valve body 32 to move in the direction of guiding the unloading channel. The operating element 11 can unlock the caster through the drive stroke segment.

[0211] The idle stroke segment is the stroke during which the operating element 11 moves relative to the push rod 12 and the valve body 32. During the idle stroke segment, the push rod 12 and the valve body 32 do not move, that is, they do not move or displace along the first direction. The movement of the operating element 11 will not exert a driving force on the push rod 12.

[0212] The empty stroke section is located at the end of the drive stroke section facing the unlocking direction. This means that after the operating element 11 passes through the drive stroke section, it will pass through the empty stroke section when it continues to move in the unlocking direction. At this time, the design of the empty stroke section allows the operating element 11 to continue moving in the unlocking direction without causing the push rod 12 and the valve body 32 to move, even after the operating element 11 has already connected the valve body 32 to the unloading channel. This keeps the push rod 12 and the valve body 32 in their current positions, increasing operational safety and reducing the impact on the push rod 12 and the valve body 32. At the same time, the empty stroke section can provide a buffer time for slow reset when returning in the opposite direction. The reset will only begin after the buffer time when the external force is removed, increasing the reliability of the reset.

[0213] The empty travel segment is located at the end of the drive travel segment away from the unlocking direction. This means that the empty travel segment is located at the end of the drive travel segment facing the reset direction. When the recovery unit applies a reset force to the operating element 11, the operating element 11 will pass through the empty travel segment after passing through the drive travel segment along the reset direction. This prolongs the reset time of the operating element 11, allowing more time for the operating table to be moved. At the same time, the empty travel segment can reduce misoperation, so that the unlocking will only begin after the operating element 11 has moved a certain distance.

[0214] The movement mode of the operating element 11 is not limited; it can be linear motion, rotation, or a combination of linear motion and rotation. No restrictions are imposed here.

[0215] In some embodiments, please refer to Figures 5 to 8 The operating element 11 can rotate around the axis of the push rod 12 in the first rotation direction under the action of external force.

[0216] The push rod 12 moves linearly in the first direction, and the operating element 11 rotates around the center line of the push rod 12; a reversing structure is provided at the joint between the operating element 11 and the push rod 12, which is used to convert the rotation of the operating element 11 into the linear motion of the push rod 12.

[0217] In this embodiment, the operating element 11 is a knob-type structure. The operating element 11 can rotate around the center line of the push rod 12 as the rotation axis, and through the reversing structure, it converts its own rotation into linear motion of the push rod 12 along the first direction, thereby driving the valve body 32 to move linearly along the first direction. By converting rotation into linear motion, a small input force can be converted into a large output force. The user can easily apply external force to the operating element 11, making the operation simple and convenient.

[0218] In some embodiments, the operating element 11 includes a first end face 11a, and the push rod 12 includes a second end face 12a, with the first end face 11a and the second end face 12a facing each other.

[0219] The reversing structure includes a helical surface 11c disposed on the first end face 11a and / or the second end face 12a. The helical surface 11c extends helically around the axis of the operating element 11 and in a first direction. The helical surface 11c is used to convert the rotation of the operating element 11 into the linear motion of the push rod 12.

[0220] Here, the helical surface 11c can include various cases. For example, the helical surface 11c can be a cam surface, in which case at least a portion of the surface of the first end face 11a and / or the second end face 12a is formed as an irregular surface; the helical surface 11c can also be a helical structure formed by changing the groove wall structure of the groove provided on the first end face 11a and / or the second end face 12a, in which case the first end face 11a and / or the second end face 12a is formed as a regular plane, for example, the first end face 11a and / or the second end face 12a is perpendicular to the axis of the operating element 11, and a groove is provided on the first end face 11a and / or the second end face 12a, and the depth of the groove changes continuously to form the helical surface 11c.

[0221] The spiral surface 11c can be set only on the first end face 11a, or only on the second end face 12a. Of course, it can also be set on both the first end face 11a and the second end face 12a.

[0222] The helical surface 11c extends helically around the axis of the operating element 11 in the first direction. That is, when the operating element 11 and the push rod 12 cooperate through the helical surface 11c, the setting of the helical surface 11c will change the movement distance of the push rod 12 in the first direction, thereby realizing the movement of the push rod 12 in the first direction.

[0223] In this embodiment, by setting the helical surface 11c, when the operating element 11 drives the push rod 12 to move, the rotation of the operating element 11 is converted into the linear movement of the push rod 12. This method is simple and can simplify the transmission mechanism. Furthermore, the input force can be amplified by an appropriate pitch design, so that a small rotational force can generate a large linear thrust or pull force. Of course, it is also convenient to adjust the moving speed of the push rod 12 to meet different application requirements.

[0224] In some embodiments, please refer to Figures 2 to 8 The manual operating mechanism 10 also includes a rolling element 13. The first end face 11a is provided with an arc-shaped groove 11b. The arc-shaped groove 11b is concentrically arranged with the axis of the operating element 11. At least a portion of the groove bottom surface of the arc-shaped groove 11b forms a helical surface 11c. The rolling element 13 is rotatably accommodated in the arc-shaped groove 11b. The operating element 11 pushes against the push rod 12 through the rolling element 13.

[0225] Here, the concentric arrangement of the arc-shaped groove 11b and the axis of the operating element 11 means that the centerline (geometric center) of the arc-shaped groove 11b and the axis of rotation of the operating element 11 lie at the same geometric center point. That is, if the axis of the operating element 11 is considered as the central axis of a cylinder, the arc-shaped groove 11b is a ring-shaped path around the surface of this cylinder, and the center of this path coincides perfectly with the center of the cylinder. Regardless of how the arc-shaped groove 11b bends or extends, it always surrounds the axis of the operating element 11, and the outer diameter of the arc-shaped groove 11b remains constant, meaning that the distance from any point on the outer arc of the arc-shaped groove 11b to the axis of the operating element 11 is equidistant.

[0226] Thus, when the rolling element 13 moves within the arcuate groove 11b, its relative position to the axis of the operating element 11 remains constant throughout its movement. This ensures the accuracy and smoothness of motion conversion and reduces additional vibration or wear caused by eccentricity. The concentric arrangement of the arcuate groove 11b also allows the rolling element 13 to move more smoothly along the groove, maintain the correct motion path, improve motion efficiency, and reduce motion wear.

[0227] The rolling element 13 has a small contact area with the arc groove 11b and the push rod 12, which is a point contact or line contact. This helps to reduce wear and reduce the friction between the rolling element 13 and the push rod 12, so that the rotation of the operating element 11 can be transmitted to the push rod 12 more quickly, increasing the reliability of the movement.

[0228] For example, the scroll member 13 can be a ball.

[0229] At least a portion of the bottom surface of the arc-shaped groove 11b forms a helical surface 11c. Here, a portion of the arc-shaped groove 11b may form a helical surface 11c, while another portion may be a non-helical surface 11c. At the helical surface 11c, the groove depth of the arc-shaped groove 11b changes axially. The rolling element 13 contacts the helical surface 11c, thus pushing the push rod 12 and causing axial displacement. At the non-helical surface 11c, the groove depth of the arc-shaped groove 11b does not change. The rolling element 13 moves in this section, thus not transmitting the driving force of the operating element 11 to the push rod 12. In this section, the operating element 11 can move relative to the push rod 12, achieving a no-stroke. Of course, the arc groove 11b can also be entirely formed as a spiral surface 11c. In this case, by designing the groove depth of the spiral surface 11c, the rolling element 13 can be prevented from pushing against the push rod 12, thereby realizing the movement of the operating element 11 relative to the push rod 12 and achieving the idle stroke. Other methods can also be used, which are not limited here.

[0230] In some embodiments, the operating table also includes a damping unit for providing damping force to the manual operating mechanism 10 during the reset process of the return unit driving the manual operating mechanism 10.

[0231] Here, during the movement of the manual operating mechanism 10 from the unlocking direction to the locking direction under the action of the reset force, the damping unit provides damping force to slow down the reset speed of the manual operating mechanism 10 and prolong the reset time, thereby achieving delayed reset. This allows the user sufficient time to move the operating table without instantaneous reset. The damping return unit ensures both sufficient unlocking time and that subsequent operating table locking operations are not affected, making operation convenient and reliable, eliminating the need for manual reset and subsequent checks. Furthermore, even if the manual operating mechanism 10 is accidentally activated during operating table movement, the damping force will prevent it from immediately resetting, ensuring high safety and reliability.

[0232] For example, during the movement of the manual operating mechanism 10 in the unlocking direction, the damping force applied by the damping unit to the manual operating mechanism 10 is zero or almost zero, that is, the damping unit does not obstruct the movement of the manual operating mechanism 10 in the unlocking direction, so as to make unlocking smoother and more convenient.

[0233] The damping unit can apply damping force to the operating element 11, or to the push rod 12, or to both the operating element 11 and the push rod 12 simultaneously. For details, please refer to the above analysis, which will not be elaborated here.

[0234] The damping unit may include a unidirectional damper 23 and a transmission gear 24, as detailed in the analysis above, and will not be repeated here.

[0235] Meanwhile, the operating table may also include a base, and the shut-off valve may also include an elastic element 33, which provides elastic force to the valve body 32, which will not be elaborated here.

[0236] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0237] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An operating table, characterized in that, include: Base; One or more casters are mounted on the base for moving the operating table; A braking mechanism, wherein the braking mechanism is connected to an unloading channel; The unlocking mechanism includes a manual operation mechanism, a damping recovery component, and a valve assembly disposed on the unloading channel. The valve assembly includes a valve seat and a valve body disposed within the valve seat. The valve body is used to open or close the unloading channel. The manual operating mechanism is used to move in the unlocking direction under the action of external force, and drive the valve body to move from the position of blocking the unloading channel to the position of opening the unloading channel, so that the brake mechanism can unload through the unloading channel, thereby releasing the brake on the caster. The damping recovery component is used to store energy during the movement of the manual operating mechanism in the unlocking direction, and to provide a reset force and damping force to the manual operating mechanism when the external force is removed, so that the manual operating mechanism and the valve body reset after a delay.

2. The operating table according to claim 1, characterized in that, The valve body moves linearly within the valve seat in a first direction, and the manual operating mechanism is separably abutted against the valve body in the first direction. The valve assembly also includes an elastic element that provides a spring force to the valve body toward the manual operating mechanism.

3. The operating table according to claim 1, characterized in that, The damping recovery assembly includes a damping unit and a reset unit. The reset unit is used to apply a reset force to the manual operating mechanism when the external force is removed. The damping unit is used to apply a damping force to the manual operating mechanism during the reset process when the reset unit drives the manual operating mechanism to reset.

4. The operating table according to claim 1, characterized in that, The manual operating mechanism includes a push rod and an operating element. At least a portion of the push rod is inserted into the valve seat and abuts against the valve body in a first direction. The operating element pushes the valve body to move linearly in the first direction via the push rod, and the operating element is capable of moving relative to the push rod.

5. The operating table according to claim 4, characterized in that, The movement stroke of the operating element includes a drive stroke segment and at least one idle stroke segment; The at least one empty travel segment is located at one end of the drive travel segment toward the unlocking direction and / or at one end away from the unlocking direction; During the drive stroke, the operating element, the push rod, and the valve body move in tandem; during the idle stroke, the push rod and the valve body remain stationary, while the operating element moves relative to the push rod.

6. The operating table according to claim 4, characterized in that, The operating element and the push rod are separably engaged in the first direction. The damping return assembly includes a reset unit and a damping unit. The reset unit includes a first reset member and a second reset member. The first reset member provides a reset force to cause the push rod to reset, and the second reset member provides a reset force to cause the operating element to reset. The damping unit is used to provide a damping force to the operating element and / or the push rod during the reset process.

7. The operating table according to claim 4, characterized in that, The push rod moves linearly along the first direction, and the operating element rotates around the center line of the push rod; a reversing structure is provided at the joint between the operating element and the push rod, and the reversing structure is used to convert the rotation of the operating element into the linear motion of the push rod.

8. The operating table according to claim 7, characterized in that, The operating element includes a first end face, and the push rod includes a second end face, with the first end face and the second end face facing each other; The reversing structure includes a helical surface disposed on the first end face and / or the second end face, the helical surface extending helically around the axis of the operating element and in the first direction, the helical surface being used to convert the rotation of the operating element into the linear motion of the push rod.

9. The operating table according to claim 8, characterized in that, The manual operating mechanism further includes a rolling element, the first end face of which is provided with an arc-shaped groove, the arc-shaped groove being concentrically arranged with the axis of the operating element, at least a portion of the bottom surface of the arc-shaped groove forming the helical surface, the rolling element being rotatably accommodated in the arc-shaped groove, and the operating element pushing against the push rod through the rolling element.

10. The operating table according to claim 9, characterized in that, The arc-shaped groove includes a first groove segment and at least one second groove segment, wherein the bottom surface of the first groove segment forms the spiral surface; The first groove segment is connected to the at least one second groove segment, and the groove depth of the second groove segment remains unchanged; When the rolling element moves relative to each other in the first groove, the operating element, the push rod, and the valve body move in tandem. When the rolling element moves relative to the second groove, the push rod and the valve body remain stationary, and the operating element rotates relative to the push rod.

11. The operating table according to claim 7, characterized in that, The damping recovery assembly includes a damping unit, which includes a one-way damper and a transmission gear. The transmission gear is coaxially arranged with the operating element. The one-way damper has an output gear, and the transmission gear and the output gear establish a power transmission.

12. The operating table according to claim 4, characterized in that, Both the push rod and the operating element move linearly along the first direction.

13. An operating table, characterized in that, include: Drive cylinder; The unloading channel is connected to the drive cylinder; A shut-off valve is disposed on the unloading channel and is used to open or close the unloading channel. The shut-off valve includes a valve seat and a valve body disposed within the valve seat. A manual operating mechanism is used to move the valve body under the action of external force, thereby opening the unloading channel so that the drive cylinder can be unloaded through the unloading channel; The recovery unit is used to drive the manual operating mechanism to reset when the external force is removed, so as to reset the valve body and shut off the unloading channel.

14. The operating table according to claim 13, characterized in that, The drive cylinder includes a drive chamber and a pressure medium supply channel. Both the pressure medium supply channel and the unloading channel are connected to the drive chamber. The pressure medium supply channel is used to supply pressure medium to the drive chamber when the valve body closes the unloading channel.

15. The operating table according to claim 13, characterized in that, The operating table includes one or more casters, and the drive cylinder is used to brake the casters. When the drive cylinder unloads through the unloading channel, the drive cylinder releases the brake on the casters.

16. The operating table according to claim 12, characterized in that, The manual operating mechanism includes an operating element and a push rod. The operating element pushes the valve body to move via the push rod. The push rod and the valve body are arranged along a first direction and move linearly along the first direction. The operating element and the push rod are separably engaged in the first direction; The recovery assembly includes a first reset member and a second reset member. The first reset member is used to provide a reset force that moves the push rod away from the valve body when the external force is removed. The second reset member is used to provide a force that resets the operating element when the external force is removed.

17. The operating table according to claim 12, characterized in that, The manual operating mechanism includes an operating element and a push rod, wherein the operating element pushes the valve body to move via the push rod; The movement stroke of the operating element includes a drive stroke segment and at least one idle stroke segment; The at least one empty travel segment is located at one end of the drive travel segment toward the unlocking direction and / or at one end away from the unlocking direction; During the drive stroke, the operating element, the push rod, and the valve body move in tandem; during the idle stroke, the push rod and the valve body remain stationary, while the operating element moves relative to the push rod.

18. The operating table according to claim 12, characterized in that, The operating element is capable of rotating about the axis of the push rod in a first rotation direction under the action of an external force; The push rod moves linearly along the first direction, and the operating element rotates around the center line of the push rod; a reversing structure is provided at the joint between the operating element and the push rod, and the reversing structure is used to convert the rotation of the operating element into the linear motion of the push rod.

19. The operating table according to claim 18, characterized in that, The operating element includes a first end face, and the push rod includes a second end face, with the first end face and the second end face facing each other; The reversing structure includes a helical surface disposed on the first end face and / or the second end face, the helical surface extending helically around the axis of the operating element and in the first direction, the helical surface being used to convert the rotation of the operating element into the linear motion of the push rod.

20. The operating table according to claim 19, characterized in that, The manual operating mechanism further includes a rolling element, the first end face of which is provided with an arc-shaped groove, the arc-shaped groove being concentrically arranged with the axis of the operating element, at least a portion of the bottom surface of the arc-shaped groove forming the helical surface, the rolling element being rotatably accommodated in the arc-shaped groove, and the operating element pushing against the push rod through the rolling element.

21. The operating table according to any one of claims 13-20, characterized in that, The operating table also includes a damping unit, which provides damping force to the manual operating mechanism during the reset process driven by the return unit.

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