Auxiliary support device for a medical cart and medical cart

Abstract

The utility model relates to an auxiliary support device and medical trolley for medical trolley, and medical trolley includes base and the walking device of a plurality of each other interval arrangement to base, and auxiliary support device includes: operating assembly for receiving the operating force from the user, linkage assembly includes first linkage link, second linkage link, third linkage link and fourth linkage link, and first linkage link's first end is connected with operating assembly, and first linkage link's second end is connected with second linkage link's first end, and second linkage link's second end is connected with third linkage link's first end and fourth linkage link's first end, support assembly includes the first support piece of being fixed to base and being connected with third linkage link's second end, and the second support piece of being able to move relative to first support piece and being connected with fourth linkage link's second end, the auxiliary support device of the utility model works in the full mechanical mode, and control is simple and reliable in operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an auxiliary support device for a medical trolley and a medical trolley including the auxiliary support device. Background Technology

[0002] A medical trolley is a type of medical device widely used for transporting or placing surgical instruments, medications, and patients, significantly reducing the workload for staff. During use, once a medical trolley is moved to a designated position, it needs to be stably maintained there.

[0003] The stabilizing mechanism of a medical trolley can include a drive unit and a support unit. After the medical trolley moves to the designated position via wheels fixed to its base, the drive unit drives the support unit downwards to support the medical trolley on the ground, thus ensuring the stability of the medical trolley. The drive unit usually uses an electric motor or hydraulic cylinder as its power source, which leads to problems such as complex control systems and high material costs during use and subsequent maintenance. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the above-mentioned problems and / or other problems existing in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, an auxiliary support device for a medical trolley is provided, the medical trolley comprising a base and a plurality of walking devices arranged at intervals to the base, the auxiliary support device comprising:

[0006] A control component for receiving control forces from a user;

[0007] A linkage assembly, comprising a first linkage rod, a second linkage rod, a third linkage rod, and a fourth linkage rod, wherein a first end of the first linkage rod is connected to the operating component, a second end of the first linkage rod is connected to the first end of the second linkage rod, and a second end of the second linkage rod is connected to the first ends of the third linkage rod and the fourth linkage rod; and

[0008] The support assembly includes a first support member fixed to the base and connected to the second end of the third linkage rod, and a second support member movable relative to the first support member and connected to the second end of the fourth linkage rod.

[0009] According to one aspect of the present invention, the operating component enables the first linkage rod to rotate in two opposite directions, thereby enabling the support component to reach a retracted position and a supported position. In the retracted position, the first and second linkage rods are not collinear, and the third and fourth linkage rods are not collinear. In the supported position, the first and second linkage rods continue to rotate relative to each other after reaching a collinear position, such that the obtuse angle between them is less than 185°. The third and fourth linkage rods continue to rotate relative to each other after reaching a collinear position, such that the obtuse angle between them is less than 185°.

[0010] According to one aspect of the present invention, the first support member is a sleeve with a sleeve opening on its side wall, and the second support member is a column with a first recess on its top side and a column opening on its side wall corresponding to the first recess. The column opening and the sleeve opening correspond to each other to allow the third linkage rod and the fourth linkage rod to pass through and be rotatably connected to the rotating shaft located inside the sleeve and the column, respectively.

[0011] According to one aspect of the present invention, the bottom side of the column is provided with a second recess, and the support assembly further includes a leg member disposed in the second recess and an elastic member sandwiched between the second recess and the leg member.

[0012] According to one aspect of the present invention, the control component includes a joystick, the number of linkage components is two and they are arranged at intervals on the joystick, and there are two support components, which are arranged in one-to-one correspondence with the two linkage components.

[0013] According to one aspect of the present invention, the auxiliary support device further includes a bracket fixed to the base, the bracket having a through hole through which a control lever of the control assembly passes and allows the control lever to rotate.

[0014] According to one aspect of the present invention, the control assembly further includes a pedal, the pedal including a pedal body hinged to the bracket, an actuating rod hinged to the pedal body, and a connecting rod with one end hinged to the actuating rod, the other end of the connecting rod being fixed to the control rod.

[0015] According to one aspect of the present invention, the control assembly includes a first pedal and a second pedal arranged side by side, the first pedal and the second pedal being configured to control the joystick to rotate in two opposite directions by pressing down the first pedal body and the second pedal body respectively.

[0016] According to one aspect of the present invention, when the first pedal body of the first pedal is pressed down, its first actuating rod extends obliquely to the top side of the control lever, and when the second pedal body of the second pedal is pressed down, its second actuating rod extends obliquely to the bottom side of the control lever.

[0017] According to another aspect of the present invention, a medical trolley is provided, including a base and a plurality of walking devices arranged at intervals to the base, the medical trolley also including the aforementioned auxiliary support device.

[0018] The auxiliary support device of this invention comprises a first linkage, a second linkage, a third linkage, and a fourth linkage, forming a four-bar linkage mechanism. The first support member is connected to the third linkage, and the second support member is connected to the fourth linkage. The third and fourth linkages provide mechanical power to drive the second support member relative to the first support member, allowing the support assembly to be in both the retracted and supported positions. This replaces the motors or hydraulic cylinders used in existing technologies, simplifying control and reducing material costs. Attached Figure Description

[0019] The features and advantages of this utility model will become clear from the following detailed description provided with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and therefore should not be considered as limitations on this utility model, wherein:

[0020] Figure 1 A partial perspective view of a medical trolley according to an embodiment of the present invention is shown.

[0021] Figure 2 Show Figure 1 A three-dimensional view of the auxiliary support device of the medical trolley shown.

[0022] Figure 3 Show Figure 2 A schematic diagram of the assembly of the control components of the auxiliary support device shown.

[0023] Figure 4 Show Figure 2 An exploded view of the linkage components and support components of the auxiliary support device shown.

[0024] Figure 5 Show Figure 3 The diagram shows the state of the support components and linkage components when the auxiliary support device is in the retracted position.

[0025] Figure 6 Show Figure 3 The diagram shows the state of the support components and linkage components when the auxiliary support device is in the support position. Detailed Implementation

[0026] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to enable those skilled in the art to more fully understand and implement the present invention. However, it will be apparent to those skilled in the art that implementations of the present invention may not include some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, the present invention can be conceived to be implemented with any combination of the features and elements described below, regardless of whether they relate to different embodiments. Therefore, the following aspects, features, embodiments, and advantages are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.

[0027] The terms "first" and "second" are used below to describe the elements of this application. These terms are used only to distinguish the individual elements and not to limit the nature, order, or number of these elements. The terms "comprising" and "having" are used to indicate an open-ended inclusion and mean that there may be additional elements / components besides those listed.

[0028] Figure 1 A partial perspective view of a medical trolley according to an embodiment of the present invention is shown. Figure 1 As shown, the medical trolley according to this embodiment may include a base 1, a plurality of walking devices 2 arranged at intervals to the bottom of the base 1, and auxiliary support devices.

[0029] refer to Figure 1 As shown, the base 1 is made of a material that meets strength requirements and is used to support objects placed on it, such as medical equipment. It also provides a mounting base for multiple walking devices 2 and auxiliary support devices. Specifically, the base 1 has a body 11 and multiple mounting parts 12, which are arranged at intervals along the circumference of the body 11 for mounting the corresponding walking devices 2. As a common practice, the base 1 can be rectangular in shape overall, meaning the body 11 and the mounting parts 12 together form a rectangle. This is suitable for objects such as medical equipment with rectangular outlines, and the rectangular shape is also easy to manufacture.

[0030] However, base 1 can also have irregular shapes, such as Figure 1The shape shown is such that the body 11 can be roughly rectangular, while the mounting part 12 extends from the body. Of course, the body 11 can also have other regular shapes, such as triangles. When this irregular shape is used, objects can be placed only on the body 11, not on the mounting part 12. This allows for a more flexible installation method between the walking device 2 and the base 1, and if a problem requires repair or replacement of a part of the walking device 2, the walking device 2 can be operated without moving the object. Furthermore, this irregular shape also allows for more flexible placement of the mounting part. The auxiliary support device proposed in this invention can be used not only for bases 1 with simple shapes such as rectangles, but also for bases 1 with irregular shapes.

[0031] The base 1 body 11 may have multiple holes for connecting and fixing objects placed on it. The walking device 2 adopts the form of casters known in the prior art, and is mounted on the base 1 through corresponding mounting structures such as holes on the mounting part 12.

[0032] Although caster-type traveling devices 2 generally have brakes to lock the casters and prevent them from rotating, on smooth surfaces, the locked casters may still slide relative to the ground due to low sliding friction. Therefore, an auxiliary support device is installed on the base 1, more specifically on the main body 11, to provide necessary auxiliary support and fixation for the medical trolley when it has moved to the predetermined position via the traveling device 2 and the casters are locked by their own brakes, thereby preventing the traveling device 2 and the entire trolley from continuing to move at the predetermined position. Figure 2 The specific structure of the auxiliary support device according to this embodiment is shown. (In conjunction with...) Figure 1 and Figure 2 As shown, the auxiliary support device in this embodiment may include a control component 3, a linkage component 4, and a support component 5.

[0033] The control component 3 receives the operating force from the user and controls the support component 5 to extend towards the ground via the linkage component 4, so that the auxiliary support device, together with the walking device 2, can stably support the medical cart on the ground. When the medical cart needs to be moved again, the user only needs to apply the operating force to the control component 3, so that the support component 5 can retract towards the base 1 back to its initial position, thereby allowing the medical cart to move freely on the ground supported only by the multiple walking devices 2.

[0034] Continue to refer to Figure 2As shown, the auxiliary support device according to this embodiment may further include a bracket 6. The bracket 6 generally includes a body connected to the base 1, and two extension arms extending to one side from the body and arranged opposite to each other. Each of the two extension arms is provided with a through hole for the extension arm to pass through. The operating component 3 is connected to the corresponding through hole in the middle of each extension arm to support it on the base 1 via the bracket 6.

[0035] Figure 3 A perspective view of the manipulation component 3 according to an embodiment of the present invention is shown. Figure 2 and Figure 3 As shown, the control assembly 3 may include a joystick 31. The joystick 31 extends laterally or longitudinally along the medical trolley and is mounted to the base 1, allowing the joystick 31 to rotate relative to the base 1. The cross-section of the joystick 1 may be, for example, hexagonal with multiple edges, and it may be connected to the linkage assembly 4 attached to it in a form-fitting manner, thereby driving the linkage assembly 4 to move when rotating about its own central axis. In this embodiment, to ensure the balance of the support of the auxiliary support device, the number of linkage assemblies 4 is preferably two.

[0036] It is understood that in this application, the direction in which the joystick 31 extends is referred to as the lateral direction, and the direction within the plane of the base 1 and perpendicular to the joystick 31 is referred to as the longitudinal direction. The direction perpendicular to both the lateral and longitudinal directions, that is, perpendicular to the plane of the base 1, is referred to as the vertical direction.

[0037] Optionally, the control assembly may also include a pedal 32. The pedal 32 can operate the lever 31 to rotate clockwise or counterclockwise, thereby actuating the linkage assembly 4. The number of pedals 32 can be one or two. When the control assembly 3 includes one pedal 32, the pedal 32 causes the lever 31 to rotate clockwise or counterclockwise through two opposite actuation actions (e.g., pressing down or lifting). Thus, the pedal 32 may include a pedal body, an actuator rod, and a connecting rod. The pedal body is hinged in the middle to a base 1 to provide necessary rotational support for the pedal body via the base 1. One end of the pedal body is for the user to press down, and the other end is hinged to the first end of the actuator rod, allowing the user to actuate the actuator rod when pressing down or lifting the pedal body. The second end of the actuator rod, opposite its first end, is fixedly engaged with the lever 31. This allows the actuator rod to rotate around its second end when the first end is actuated, thereby rotating the lever 31.

[0038] In this embodiment, the control component 3 may include a first pedal 321 and a second pedal 322, such as Figure 3As shown. By actuating one of the first pedal 321 and the second pedal 322 through an action (e.g., pressing down), the lever 31 can rotate clockwise; similarly, by actuating the other of the first pedal 321 and the second pedal 322, the lever 31 can rotate counterclockwise. Thus, the retraction and support of the auxiliary support device, which will be detailed below, can be achieved solely through a pressing action. Compared to using only one pedal, using two pedals allows for operation by simply pressing down, without requiring a pressing down action, avoiding situations where, for example, the pedal end is too low off the ground, making it inconvenient or impossible to place the foot under the pedal, thus preventing pedal operation.

[0039] Specifically, refer to Figure 3 As shown, the first pedal 321 may include a first pedal body 3211, a first actuating rod 3212, and a first connecting rod 3213. The top surface of the first pedal body 3211 has a tread surface for the user to step on, which has strip-shaped protrusions to prevent slippage when stepped on. A connecting portion extends obliquely from the bottom surface of the first pedal body 3211. One end of the connecting portion opposite to the first pedal body 3211 is hinged to one end of the first actuating rod 3212, and the other end of the first actuating rod 3212 is hinged to the first end of the first connecting rod 3213. The cross-section of the through hole on the second end of the first connecting rod 3213 is a shape adapted to the cross-section of the operating lever 31, such as a regular hexagon. Thus, the second end of the first connecting rod 3213 is sleeved onto the operating lever 31 through this through hole. When the first end of the first connecting rod 3213 is actuated, the first connecting rod 3213 can rotate around the central axis of the operating lever 31, thereby driving the operating lever 31 to rotate.

[0040] Similarly, the second pedal 322 may include a second pedal body 3221, a second actuating rod 3222, and a second connecting rod 3223. The connection relationship between the second pedal body 3221, the second actuating rod 3222, and the second connecting rod 3223 can be referenced to the connection relationship between the first pedal body 3211, the first actuating rod 3212, and the first connecting rod 3213. Specifically, to control the joystick 31 to rotate in opposite directions by pressing down the first pedal body 3211 and the second pedal body 3221 respectively, the first actuating rod 3212 extends obliquely upward relative to the vertical and forms a first angle of acute magnitude with the first connecting rod 3213, and the first connecting rod 3213 extends obliquely upward in the initial state (i.e., the support assembly is in the retracted position). The second actuating rod 3222 extends obliquely upward relative to the vertical and forms a second angle of obtuse magnitude with the second connecting rod 3223, and the second connecting rod 3223 extends obliquely downward in the initial state (i.e., the support assembly is in the retracted position). Therefore, by pressing down the first pedal body 3211, the first actuator rod 3212 pushes the first connecting rod 3213 to rotate clockwise, thereby controlling the control lever 31 to rotate clockwise. Pressing down the second pedal body 3221 causes the second actuator rod 3222 to push the second connecting rod 3223 to rotate counterclockwise, thereby controlling the control lever 31 to rotate counterclockwise.

[0041] Figure 4 An exploded view of the linkage component 4 and the support component 5 in this embodiment is shown. Figure 5 The diagram shows the states of the linkage component 4 and the support component 5 when the support component 5 is in the retracted position. Figure 6 The state of the linkage component 4 and the support component 5 is shown when the support component 5 is in the support position.

[0042] like Figure 4 As shown, the linkage assembly 4 according to this embodiment may include a first linkage rod 41, a second linkage rod 42, a third linkage rod 43, and a fourth linkage rod 44. The first end of the first linkage rod 41 ( Figure 4 and Figure 5 The left end of the lever 41 has a through hole (e.g., a hexagonal hole) that matches the shape of the lever 31, allowing it to be fitted onto the lever 31, so that the lever 31 can drive the first linkage rod 31 to rotate around the central axis of the lever 31 when it rotates. The second end of the first linkage rod 41 ( Figure 4 and Figure 5 The right end) and the first end of the second linkage 42 ( Figure 4 and Figure 5 The upper end) is connected by the first pin 45, and the second end of the second linkage rod 42 ( Figure 4 and Figure 5 The lower end) is simultaneously connected to the first end of the third linkage rod 43 via the second pin 46. Figure 4 and Figure 5The left end) and the first end of the fourth linkage 44 ( Figure 4 and Figure 5 The left end) is connected, so that the second end of the third linkage 43 ( Figure 4 and Figure 5 The right end) and the second end of the fourth linkage 44 ( Figure 4 and Figure 5 The right ends of the two components can move closer to each other and further apart as they rotate around the second pin 46, thereby enabling the support components 5 to reach the retracted position and the supported position.

[0043] Specifically, in Figure 5 When the support assembly 5 is in the retracted position, the first linkage rod 41 and the second linkage rod 42 are not collinear and form an included angle α, and the third linkage rod 43 and the fourth linkage rod 44 are not collinear and form an included angle β. The support assembly 5 is composed of... Figure 5 The indicated storage position is towards Figure 6 When the support position changes as shown, the right end of the first linkage rod 41 drives the left end of the second linkage rod 42 to move downward, causing the included angle α to gradually increase. The distance between the left end of the first linkage rod 41 and the right end of the second linkage rod 42 is lengthened. With the left end of the first linkage rod 41 keeping its position unchanged via the control lever 31, the right end of the second linkage rod 42 must move to the right, causing the left ends of the third linkage rod 43 and the fourth linkage rod 44 to move to the right. The right ends of the third linkage rod 43 and the fourth linkage rod 44 move upward and downward respectively, causing the included angle β to gradually decrease.

[0044] refer to Figure 4 As shown, the support assembly 5 according to this embodiment may include a first support member 51 and a second support member 52. The first support member 51 is connected to the base 1 and is rotatably connected to the second end of the third linkage rod 43 via a third pin 47. The second support member 52 is rotatably connected to the second end of the fourth linkage rod 44 via a fourth pin 48 and can move vertically relative to the first support member 51, so that the second support member 52 can move away from or closer to the base 1, allowing the support assembly 5 to be in a retracted position and a supported position.

[0045] To ensure greater stability and safety of the support assembly 5 when supporting the medical trolley, a mechanism connected to the control lever 1 for locking the walking device 2 locks the walking device 2 at a predetermined angle. Simultaneously, or individually, the rotation angle of the control lever 1 at this time ensures that the first linkage 41 and the second linkage 42, after rotating relative to each other to a collinear position, continue to rotate relative to each other such that the obtuse angle between them is less than 185°. Similarly, the third linkage 43 and the fourth linkage 44, after rotating relative to each other to a collinear position, continue to rotate relative to each other such that the obtuse angle between them is less than 185°. Thus, if it is necessary to restore the auxiliary support device to its initial retracted state, this can only be achieved by rotating the control lever 31 in the opposite direction, and not by directly pushing the second support member 52, ensuring that unlocking is only possible by the user consciously pressing the pedal 32.

[0046] In a feasible embodiment, the control lever 1 can be used simultaneously to drive the caster locking component and to drive the linkage assembly 4 to operate the auxiliary support device. To this end, based on the structure and dimensions of the caster locking component and the dimensions and positions of each linkage rod 41, the first linkage rod 41 and the second linkage rod 42 can be rotated by a very small angle (e.g., no more than 5°, preferably 5°) after reaching a collinear position when locking the caster, and the third linkage rod 43 and the fourth linkage rod 44 can be rotated by a very small angle (e.g., no more than 5°, preferably 5°) after reaching a collinear position.

[0047] In another feasible embodiment, the control lever 1 can be used solely to drive the linkage assembly 4 to operate the auxiliary support device. Thus, after the first linkage lever 41 and the second linkage lever 42 have just reached a collinear position and continue to rotate by a very small angle (e.g., no more than 5°, preferably 5°), the first linkage lever 41 will contact the limiting mechanism on the trolley or the base 1 itself, preventing further rotation. At this time, the third linkage lever 43 and the fourth linkage lever 44 also continue to rotate by a very small angle (e.g., no more than 5°, preferably 5°) after reaching a collinear position. Due to the weight of the trolley, the auxiliary support device will reach a balance, thereby keeping the entire linkage assembly 4 in a locked state.

[0048] For the specific structure of support component 5, see [link / reference]. Figure 4The first support member 51 is a sleeve with a sleeve opening 511 on its side wall. The second support member 52 can be a column with a first recess 521 on its top side, and a column opening 522 corresponding to the sleeve opening 511 is provided on the side wall of the first recess 521. This allows the third linkage rod 43 and the fourth linkage rod 44 to pass through the sleeve opening 511 and the column opening 522 and extend into the interior of the sleeve and the column. Optionally, the sleeve has two opposing through holes for the third pin 47 to pass through, allowing the third linkage rod 43 to pass through and connect to the interior of the sleeve. The side wall of the first recess 521 on the column has two opposing through holes for the fourth pin 48 to pass through, allowing the fourth linkage rod 48 to pass through and connect to the interior of the first recess 521 on the column.

[0049] Continue to refer to Figures 4 to 6 As shown, a second recess 523 is provided on the bottom side of the column. The second recess 523 and the first recess 521 are recessed into each other and spaced apart along the axial direction of the column. The support assembly 5 may also include a leg member 53 and an elastic member 54. The leg member is connected to the lower opening of the second recess 523 and forms a closed cavity with the column. The elastic member 54 may be a spring, installed in the cavity, with one end abutting against the bottom of the upper end of the second recess 523 and the other end abutting against the leg member 54, so that the leg member 54 can move up and down relative to the column under the action of elastic force, thereby enabling the auxiliary support device to adapt to uneven ground.

[0050] This utility model also provides a medical trolley, which includes a base 1, a plurality of walking devices 2 arranged at intervals on the base 1, and the aforementioned auxiliary support device.

[0051] As described above, the first linkage 41, second linkage 42, third linkage 43, and fourth linkage 44 of the auxiliary support device according to this utility model form a four-bar linkage mechanism, and the first support member 51 is connected to the third linkage 43, and the second support member 52 is connected to the fourth linkage 44. The third linkage 43 and the fourth linkage 44 provide mechanical motion as power, driving the second support member 52 to move relative to the first support member 51, thus enabling the support assembly 5 to be in the retracted position and the supported position. This replaces the motor or hydraulic cylinder used in the prior art as a power source, simplifying control and reducing material costs.

[0052] Various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of this invention. Other embodiments of this invention will be apparent to those skilled in the art based on the practice of this invention disclosed in this specification. This specification and the examples disclosed herein should be considered illustrative only, and the true scope of this invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary support device for a medical trolley, the medical trolley comprising a base (1) and a plurality of walking devices (2) spaced apart from each other and arranged on the base, characterized in that, The auxiliary support device includes: A control component (3) is used to receive control forces from a user; Linkage assembly (4), the linkage assembly including a first linkage rod (41), a second linkage rod (42), a third linkage rod (43), and a fourth linkage rod (44), wherein the first end of the first linkage rod is connected to the operating assembly, the second end of the first linkage rod is connected to the first end of the second linkage rod, and the second end of the second linkage rod is connected to the first ends of the third linkage rod and the fourth linkage rod; and The support assembly (5) includes a first support member (51) fixed to the base and connected to the second end of the third linkage rod, and a second support member (52) movable relative to the first support member and connected to the second end of the fourth linkage rod.

2. The auxiliary support device according to claim 1, characterized in that, The control component (3) enables the first linkage rod (41) to rotate in two opposite directions, thereby enabling the support component (5) to reach the retracted position and the supported position. In the retracted position, the first linkage rod (41) and the second linkage rod (42) are not collinear, and the third linkage rod (43) and the fourth linkage rod (44) are not collinear. In the supported position, the first linkage rod and the second linkage rod continue to rotate relative to each other after they have just reached the collinear position, so that the obtuse angle between them is less than 185°. The third linkage rod and the fourth linkage rod continue to rotate relative to each other after they have just reached the collinear position, so that the obtuse angle between them is less than 185°.

3. The auxiliary support device according to claim 2, characterized in that, The first support member (51) is a sleeve and has a sleeve opening (511) on its side wall. The second support member (52) is a column with a first recess (521) on its top side and has a column opening (522) on its side wall corresponding to the first recess. The column opening and the sleeve opening correspond to each other to allow the third linkage rod and the fourth linkage rod to pass through and be rotatably connected to the rotating shaft located inside the sleeve and the column, respectively.

4. The auxiliary support device according to claim 3, characterized in that, The bottom side of the column is provided with a second recess (523), and the support assembly (5) further includes a leg member (53) disposed in the second recess and an elastic member (54) sandwiched between the second recess and the leg member.

5. The auxiliary support device according to claim 4, characterized in that, The control assembly includes a joystick (31), the number of linkage components (4) is two and they are arranged at intervals on the joystick, and there are two support components (5) that are set one-to-one with the two linkage components.

6. The auxiliary support device according to any one of claims 1 to 5, characterized in that, The auxiliary support device also includes a bracket (6) fixed to the base (1), the bracket having a through hole through which the control lever (31) of the control assembly passes and allows the control lever to rotate.

7. The auxiliary support device according to claim 6, characterized in that, The control assembly further includes a pedal (32), which includes a pedal body hinged to the bracket, an actuating rod hinged to the pedal body, and a connecting rod with one end hinged to the actuating rod, the other end of which is fixed to the control rod.

8. The auxiliary support device according to claim 7, characterized in that, The control assembly includes a first pedal (321) and a second pedal (322) arranged side by side, the first pedal and the second pedal being configured to control the joystick to rotate in two opposite directions by pressing the first pedal body and the second pedal body respectively.

9. The auxiliary support device according to claim 8, characterized in that, When the first pedal body of the first pedal is pressed down, its first actuator rod extends obliquely to the top side of the control lever (31), and when the second pedal body of the second pedal is pressed down, its second actuator rod extends obliquely to the bottom side of the control lever (31).

10. A medical trolley, comprising a base and a plurality of walking devices arranged at intervals to the base, characterized in that, The medical trolley also includes an auxiliary support device according to any one of claims 1 to 9.

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