Trolley and medical device

Abstract

The utility model relates to a trolley and a medical device. The trolley comprises a body; a plurality of rolling members which are in contact with the ground and support the body; the auxiliary supporting device is used for supporting the body together with the rolling piece, the auxiliary supporting device comprises at least three hydraulic supporting devices, and each hydraulic supporting device comprises a hydraulic cylinder body, a piston arranged in the hydraulic cylinder body and a supporting leg connected with the piston and partially located outside the hydraulic cylinder body; the auxiliary supporting device further comprises pressure control devices, the number of the pressure control devices is the same as that of the hydraulic supporting devices, one pressure control device is arranged on a path for supplying the hydraulic oil to each hydraulic supporting device, and the pressure control devices are used for controlling connection and disconnection of the paths. The hydraulic supporting devices of the trolley are independently controlled, the trolley can be suitable for the uneven ground, and stable supporting can be provided even if external force is applied to the trolley after the trolley is supported in place.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a trolley and a medical device. Background Art

[0002] Trolleys are widely used in the medical field. Various medical devices can be arranged on the trolley. For example, imaging devices, control devices, etc. can be arranged, and the trolley can also be used as an operating table. For the convenience of movement, the trolley can also be configured with rolling members such as casters. In order to enable the trolley to be fixed at the required position, a locking device is also equipped for the rolling members to prevent the rolling members from rolling.

[0003] However, in order to enable the trolley to be stably supported on the ground, it is not enough to only use the locking device to lock the rolling members. This is because the ground itself may be uneven. In this case, even if the trolley itself does not move, the trolley is still unstable; the friction between the ground and the trolley is insufficient, so that even if the rolling members are locked, the trolley may still move due to the action of a thrust or a pulling force. This kind of instability needs to be avoided in many cases, especially when the trolley is used as an operating trolley.

[0004] Although it is known to use, for example, electric auxiliary support, hydraulic auxiliary support and other means to provide additional support for the trolley in addition to the rolling members, these auxiliary supports still cannot make the trolley in the desired stable state. Summary of the Utility Model

[0005] In order to at least partly solve the above technical problems, the utility model proposes the following solutions.

[0006] A trolley, comprising:

[0007] A body;

[0008] A plurality of rolling members, the rolling members being in contact with the ground and supporting the body;

[0009] An auxiliary support device, the auxiliary support device being used to support the body together with the rolling members, the auxiliary support device comprising:

[0010] At least three hydraulic support devices, each hydraulic support device comprising a hydraulic cylinder body, a piston arranged in the hydraulic cylinder body, and a leg connected to the piston and partially located outside the hydraulic cylinder body;

[0011] The auxiliary support device further comprises a pressure control device, the number of the pressure control devices being the same as the number of the hydraulic support devices, and a pressure control device is respectively arranged on the path for supplying hydraulic oil to each hydraulic support device, and the pressure control device is used to control the on and off of the path.

[0012] According to an example of the present utility model, the body is rectangular, the number of the rolling members is four and they are respectively arranged at the corners of the body, and the rolling members are respectively a first rolling member, a second rolling member, a third rolling member and a fourth rolling member.

[0013] According to an example of the present utility model, the rolling members are casters, and / or each rolling member has a locking device.

[0014] According to an example of the present utility model, the number of the hydraulic support devices is three and they are distributed in an isosceles triangle.

[0015] According to an example of the present utility model, the number of the hydraulic support devices is four and they are respectively arranged at the corners of the body.

[0016] According to an example of the present utility model, the auxiliary support device further includes a power unit, and the power unit includes a hydraulic motor.

[0017] According to an example of the present utility model, the pressure control device is a solenoid valve.

[0018] According to an example of the present utility model, the auxiliary support device further includes a pressure sensor, and the pressure sensor measures the hydraulic pressure between the pressure control device and the hydraulic support device.

[0019] According to an example of the present utility model, the auxiliary support device further includes a manual reset member, and the manual reset member can connect the oil circuit between the hydraulic cylinder and the power unit independently of the pressure control device.

[0020] The present utility model also provides a medical device, including the above-mentioned trolley.

[0021] As can be seen from the above, by providing a separate pressure control device for each hydraulic cylinder of the auxiliary support device, the present utility model enables the pressure in each hydraulic cylinder to be independently controlled, which allows the hydraulic legs in each hydraulic cylinder to extend by different lengths, so that the trolley can also obtain good auxiliary support through each hydraulic leg on uneven ground. After the support is in place, the solenoid valve closes, and the hydraulic oil is sealed in each hydraulic cylinder, and the hydraulic oil between the hydraulic cylinders does not communicate with each other. At this time, even if the trolley is subjected to an unbalanced external force, for example, a large downward pressure is received at a certain corner, since each hydraulic cylinder is sealed by the solenoid valve and the hydraulic oil cannot flow, and the compressibility of the liquid itself is very small, this ensures that the stroke of the hydraulic cylinder will not change, thereby ensuring the stability of the trolley.

[0022] Other features and advantages of the present utility model will be presented in the following specific description in conjunction with the accompanying drawings. Description of the Drawings

[0023] The features and advantages of the present utility model will be clearly understood 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 thus should not be regarded as limiting the present utility model, where:

[0024] Figure 1 Shows an overall schematic view of the medical device according to the present utility model.

[0025] Figure 2 Shows a schematic view of the first embodiment of the trolley according to the present utility model.

[0026] Figure 3 Shows a schematic view of the second embodiment of the trolley according to the present utility model.

[0027] Figure 4 Shows a schematic diagram of the hydraulic control principle of the support device of the trolley according to the present utility model. Detailed Description of the Embodiments

[0028] The embodiments of the present utility model will be described below with reference to the accompanying drawings. In the following description, many specific details are set forth in order to enable those skilled in the art to more fully understand and implement the present utility model. However, it is obvious to those skilled in the art that some of these specific details may not be required for the implementation of the present utility model. In addition, it should be understood that the present utility model is not limited to the specific embodiments described. On the contrary, the present utility model can be implemented by 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 regarded as features or limitations of the claims, unless expressly recited in the claims.

[0029] The descriptions of directions that may be used in the following description, such as "up", "down", "inside", "outside", "radial", "axial", etc., are for convenience of description only and are not intended to impose any limitation on the technical solutions of the utility model, unless otherwise clearly stated. In addition, terms such as "first", "second", etc. are used in the following to describe the elements of the present application, and these terms are only used to distinguish the various elements and are not intended to limit the nature, sequence, order, or number of these elements.

[0030] Figure 1Shows an overall schematic diagram of a medical device according to the present utility model. The medical device of the present utility model includes three trolleys, namely the first trolley A which can also be called the robotic arm trolley, the second trolley B which can also be called the main trolley, and the third trolley C which can also be called the auxiliary trolley. The first trolley A can be used as an operating trolley, and tools such as robotic arms that can assist surgical personnel in performing surgeries are provided thereon. Since surgeries require high precision, the robotic arm trolley has high requirements for stability.

[0031] The control part of the entire medical device is provided on the second trolley B. This control part can obtain relevant images of the first trolley A through, for example, a camera, and control the operation of the robotic arm according to instructions to assist surgical personnel in performing surgeries. The third trolley C can be provided with accessory components such as a display, so that surgical personnel can easily and clearly observe the progress of the surgery. The three trolleys can be connected electrically and / or communicatively, Figure 1 and this connection is shown by a dashed line in the figure.

[0032] In other embodiments, the second trolley B and the third trolley C can be combined into one trolley as long as the required functions can be achieved.

[0033] Figure 2 Shows a schematic diagram of the first embodiment of the trolley according to the present utility model. As Figure 2 shown, the first trolley A includes a body 1, and four rolling members are provided on the body 1, namely the first rolling member FL, the second rolling member FR, the third rolling member RL, and the fourth rolling member RR. The body 1 has a rectangular shape, and correspondingly, these four rolling members can be provided near the four corners of the body 1. The rolling members can be casters with locking devices, whereby the first trolley A can be moved by pushing the body 1 and the rotation of the casters can be blocked by operating the locking device with the foot. A robotic arm 2 is also provided on the body 1. The robotic arm 2 can perform corresponding operations according to the instructions of the control part on the second trolley B, thereby assisting in the surgery.

[0034] In a medical device according to an embodiment of the present utility model, the first trolley A can be used as an operating trolley. Therefore, very high requirements are imposed on the stability of the first trolley A. When only four casters are used, the first trolley A can move, or the casters can be locked through the locking devices carried by each caster to prevent the casters from rotating, thereby fixing the first trolley A to a certain extent. However, this cannot meet the stability requirements of the first trolley A in all cases. For example, on a relatively smooth ground, even if the casters are locked through the locking device, the first trolley A will still move under the action of a horizontal force. In addition, if the first trolley A stops on an uneven road surface, the four casters may not be exactly at the same height above the ground. Therefore, at this time, the first trolley A may shake due to the force perpendicular to the ground. These are all highly undesirable situations.

[0035] Therefore, the present utility model proposes the following improvement solutions. In addition to the existing rolling member support, an auxiliary support device is also provided. The structure of the auxiliary support device will be described below. As Figure 2 shown, on the side of the main body 1 facing the ground in the use state, three hydraulic support devices 3 are provided. These three hydraulic support devices can be hydraulic struts driven by hydraulic pressure, which have a hydraulic cylinder body, a piston accommodated in the hydraulic cylinder body, and a leg connected to the piston and partially located outside the hydraulic cylinder body. Thus, the leg can move with the movement of the piston under the pressure of the hydraulic oil, so that it can contact the ground when extended, and then jointly support the first trolley A with the casters. The three hydraulic support devices 3 can be distributed in an isosceles triangle, with two of them arranged adjacent to the front wheels and the other one located between the two rear wheels, for example, in the middle.

[0036] Figure 3 The schematic diagram of the second embodiment of the trolley according to the present utility model is shown. As Figure 3 shown, in order to improve the adaptability to uneven ground and more firmly support the first trolley A, four hydraulic support devices 3 can be provided. In this way, during use, at most eight ground contact points can be provided for the first trolley A, and the support is more stable. When facing an uneven ground, compared with the situation of only providing four casters or only providing three hydraulic support devices, more ground contact parts can be generated. Especially when facing a force perpendicular to the ground, the first trolley A is less likely to shake.

[0037] Figure 4 The schematic diagram of the hydraulic control principle of the auxiliary support device of the trolley according to the present utility model is shown. As an important improvement of the present utility model, from Figure 4As can be seen, the trolley auxiliary support device of the present utility model is a hydraulically independent support, that is, each hydraulic cylinder is equipped with a solenoid valve. This is because the applicant found during the research process that in the auxiliary support with multiple hydraulic struts provided with hydraulic pressure from a common hydraulic source, since the pressure in each hydraulic cylinder is the same and the hydraulic oil is interconnected through pipelines in each cylinder, therefore, especially in the solution of using casters and hydraulic cylinders to jointly support the trolley, although this method can provide more support positions, thus improving the support stability to a certain extent, the pressure in the hydraulic cylinder is smaller compared to the case of only using hydraulic force to support the trolley, that is, the support force provided by all hydraulic cylinders is less than the gravity of the trolley. In this case, when the trolley is subjected to unbalanced external forces, for example, when the trolley is subjected to a vertical force acting only on one of its corners, the hydraulic cylinder located at this corner will be subjected to a greater force than the other hydraulic cylinders, which will cause the hydraulic oil to be squeezed out of the hydraulic cylinder at this place and flow between different hydraulic cylinders, flowing from the hydraulic cylinder with a greater pressure to the hydraulic cylinder with a smaller pressure, thereby causing a change in the stroke of the hydraulic cylinder, and further causing the length of the hydraulic strut at this place to become smaller, and the trolley will no longer be stable, and its balance and stability cannot be guaranteed.

[0038] Therefore, as Figure 4 shown, the present utility model provides a separate pressure control device for each hydraulic cylinder in each hydraulic branch, and a solenoid valve is used as an example in Figure 4 . In Figure 4 , the four trolley casters are located at the bottom. Correspondingly, four hydraulic legs are provided. Each hydraulic leg is connected to its corresponding hydraulic cylinder, and the pressure in each hydraulic cylinder can be controlled by the solenoid valve provided for it. In order to provide the hydraulic pressure required by each hydraulic cylinder, a power unit is provided. The power unit is connected to the power supply on the one hand to obtain electrical energy, and on the other hand is connected to the control system to implement corresponding control according to the control signal. As an alternative, the power unit may include a hydraulic motor to provide hydraulic pressure for each hydraulic cylinder.

[0039] In addition, in order to control the operation of the power unit, a pressure sensor is also provided on each hydraulic branch. The pressure sensor can be used to collect the hydraulic pressure on the pipeline between the solenoid valve and the hydraulic cylinder.

[0040] As another improvement of the present utility model, a manual reset member is also provided. The manual reset member is used to provide a pressure relief function independently of the solenoid valve, so that even when the solenoid valve does not work or cannot work properly, the oil circuit between the hydraulic cylinder and the power unit can be connected through the manual reset member, so that the leg can be retracted.

[0041] Thus, when the trolley according to the present utility model is in operation, the opening and closing of each solenoid valve can be determined based on the pressure sensor, thereby controlling the pressure in each hydraulic cylinder, and each hydraulic cylinder can be independently controlled. Therefore, when on an uneven ground, by independently controlling each hydraulic cylinder, the hydraulic outriggers can be extended to different lengths, so that the entire trolley can also obtain support from all the hydraulic outriggers on the uneven ground. After the support is in place, the solenoid valve closes, and the hydraulic oil is sealed in each hydraulic cylinder, and the hydraulic oil between the hydraulic cylinders does not communicate with each other. At this time, even if the trolley is subjected to an unbalanced external force, for example, a large downward pressure is received at a certain corner, since each hydraulic cylinder is sealed by the solenoid valve and the hydraulic oil cannot flow, and the compressibility of the liquid itself is very small, this ensures that the stroke of the hydraulic cylinder will not change, thereby ensuring the stability of the trolley.

[0042] For those skilled in the art, various modifications and variations can be made to the embodiments disclosed above without departing from the scope or spirit of the present utility model. Based on the practice of the present utility model disclosed in this specification, other embodiments of the present utility model will be apparent to those skilled in the art. This specification and the examples disclosed therein should be considered illustrative only, and the true scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A trolley, comprising: ontology(1); A plurality of rolling elements, the rolling elements being in contact with the ground and supporting the body (1); An auxiliary supporting device, the auxiliary supporting device is used to support the body (1) together with the rolling element, and the auxiliary supporting device comprises: At least three hydraulic support devices, each hydraulic support device comprising a hydraulic cylinder, a piston disposed in the hydraulic cylinder, and a support leg connected to the piston and partially located outside the hydraulic cylinder; It is characterized in that The auxiliary support device also includes a pressure control device, the number of which is the same as the number of the hydraulic support devices, and a pressure control device is respectively provided on the path for supplying hydraulic oil to each hydraulic support device, and the pressure control device is used to control the connection and closing of the path.

2. The trolley according to claim 1, characterized in that: The body (1) is rectangular, the number of the rolling elements is four and they are respectively arranged at the corners of the body (1), and the rolling elements are respectively a first rolling element (FL), a second rolling element (FR), a third rolling element (RL) and a fourth rolling element (RR).

3. The trolley according to claim 2, characterized in that: The rolling element is a caster, and / or each rolling element has a locking device.

4. The trolley according to claim 2, characterized in that: The number of the hydraulic support devices is three and they are distributed in an isosceles triangle.

5. The trolley according to claim 2, characterized in that: The number of the hydraulic support devices is four, and they are respectively arranged at the corners of the body (1).

6. The trolley according to any one of claims 1 to 3, characterized in that: The auxiliary supporting device further comprises a power unit, and the power unit comprises a hydraulic motor.

7. The trolley according to any one of claims 1 to 3, characterized in that: The pressure control device is a solenoid valve.

8. The trolley according to any one of claims 1 to 3, characterized in that: The auxiliary supporting device further includes a pressure sensor, which measures the hydraulic pressure between the pressure control device and the hydraulic supporting device.

9. The trolley according to any one of claims 1 to 3, characterized in that: The auxiliary supporting device further comprises a manual reset component, which can connect the oil circuit between the hydraulic cylinder and the power unit independently of the pressure control device.

10. A medical device, characterized in that: Comprising a trolley according to any one of claims 1-9.

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