JPS6361245B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for transferring an object using a support base surrounded by an endless belt, especially when a patient is transferred from one room to another through a window in a hospital or the like. The present invention relates to a transfer device that can be suitably used for.

This type of transfer device is used as a device for transporting patients into and out of a sterilized operating room or the like from an external room. In other words, if a patient is transported into or out of a sterilized operating room using a transport vehicle or the like through a door, bacteria may enter the operating room and sterilization will need to be performed again. The method used is to install a loading/unloading device in the window of the operating room and to carry the patient in/out through the window.

This transfer device has a support table for scooping up, mounting, and transferring a patient lying on an operating table, etc., but this support table is a flat-shaped support table that is supported so as to be horizontally movable in a horizontal state. The basic components are a frame and an endless belt surrounding the frame in the patient transport direction, and the patient is transported by rotation of the endless belt and movement of the frame.

An example of such a device is shown in Japanese Patent Application Laid-open No. 53-16487, ``Transportation device for moving a lying patient, especially in a hospital.'' This "carrying device" is based on two frames (upper and lower) and endless belts surrounding both frames, with the lower endless belt being actively rotated by a drive mechanism. . This "carrying device" is a system in which the lower endless belt of both the upper and lower endless belts is actively rotated, and the upper endless belt is driven by frictional force, so that the upper endless belt on which the patient is carried is rotated. There is a problem with the reliability of rotation. Furthermore, there is a problem in the speed of patient transfer, and the upper endless belt has the disadvantage that it is difficult to rotate smoothly.

With this type of patient transfer device, the upper and lower two
Rather than using a method that uses individual endless belts,
A simple configuration with only one endless belt (Special Publication No. 57-3373 ``Object Transfer Device'') has also been proposed, but this ``transfer device'' has an endless belt friction-bonded to the bed etc. by movement of the frame. There are problems with the reliability of picking up and transferring patients.

The present invention is an object transfer device that solves the drawbacks of the conventional devices as described above, and it is an object of the present invention to provide an ideal transfer device that can drive the rotation of an endless belt at a fixed position. It is.

The object transfer device provided by the present invention is characterized in that the upper portion of the support base is surrounded by an endless band-shaped body;
The lower part is mainly composed of a frame surrounded by a band-shaped body with ends fixed at both ends, and the endless band-shaped body in the upper part is rotated by a drive mechanism installed in the fixed part.

An example of a patient transfer device will be described below.

FIG. 1 is a diagram showing the overall configuration of the transfer device of the present invention implemented in a window M of a partition wall W. A support base S, which is the main body of the device, is inserted through the window M, and an operating room A and an outside are connected to each other. It is shown extending into chamber B.

Although the figure shows a state in which the window M is open, specifically, an opening/closing window that descends to the top surface of the support base S is provided, and FIG. 1 shows this opening/closing window (not shown). This is a diagram in which ``Z'' is omitted. In the figure, a patient K is placed on an operating table D in an operating room A, and the state before the patient K is transferred to, for example, a transport vehicle H in an external room B is shown.

The details of the structure of the support stand S will be described later, but its main components are a frame 1 on which the patient K is mounted and supported.
, a frame body 2 at both ends, an endless belt 3 surrounding these in the patient transport direction, and an end belt 4. This support stand S is placed horizontally at the window M.
It is supported through and is movable horizontally.

The support stand S is configured so that an endless belt 3, which is especially surrounded by a frame 1, can be actively rotated in order to transport the patient K, and is also configured to be able to move a certain amount in the vertical direction. There is.
Details of these configurations will be explained with reference to FIGS. 2 to 7.

FIG. 2 shows a state in which the support stand S is installed in a horizontal state with respect to a movable stand 5 installed in a window M so as to be movable up and down by a hydraulic cylinder 15. The patient is transferred from the right to the left or from the left to the right using this device, but is placed on the support table S in a recumbent state. For this purpose, the width of this support table (the length in the direction perpendicular to the plane of the paper in FIG. )are doing. This state is clear from FIG. 3 viewed from -' in FIG. 2, and the support stand S is held at both sides by the horizontally long U-shaped pedestal 5.

The height (thickness) of the entire support stand S is made as small as possible to reduce weight. That is, as will be explained in detail later, an endless belt 3 and an end belt 4
is rotated by a rotational drive source, but this drive source is installed on the side of the pedestal 5, and the thickness of the support base S is made small. On the other hand, since it is required to have enough strength to withstand the loading of a patient, the structure must meet this requirement.

The support stand S has a flat shape as shown in FIGS. 1 to 3, and includes a frame 1 that supports the patient K directly placed above, a frame 2 attached to both ends of the frame 1, and a frame 2 attached to both ends of the frame 1. The main constituent elements are an endless belt 3 and an end belt 4 surrounding the frame 1 and the rollers 1R, 2R attached to the frame body 2.

The details of the structure of the frame 1 are as shown in FIGS. 4 to 6, and consist of an assembly of two upper and lower plate-like frames 1F and side plates 1S on both sides in the width direction. As shown in an enlarged view, a frame body 2 is integrally attached, and rollers 1R and 2R are rotatably held on this frame body 2 by support shafts 19 and 20.
Although the belts 3 and 4 are in surface contact with each other as shown in the drawing, the distance between the rollers 1R and 2R is set so that frictional transmission does not occur.

The endless belt 3 is surrounded by the frame 1 and the rollers 1R at both ends, and at the position of the pedestal 5, it is wound around a drive roller 6 installed on the pedestal 5 (fixed part). This state is shown in detail in FIG. 6, where the endless belt 3 is wound around the driving roller 6 via rollers 8 and 8', and the winding angle between the endless belt 3 and the driving roller 6 is increased. Rotation of the belt 3 is ensured.

The rollers 8, 8' are rotatably held by the pedestal 5, and the drive roller 6 is rotatably supported by the pedestal 5 via its support shaft 10. As shown in FIG. 3, the right side of the support shaft 10 of the drive roller 6 extends through the right side of the frame 5 and is connected to the output shaft of an electric motor 12 with a reduction gear. Therefore, the rotation of the electric motor 12 drives the drive roller 6 to rotate, and the endless belt 3 rotates around the frame 1.

On the other hand, the lower end belt 4 is connected to the rollers 2R on both sides.
Like the endless belt 3, the middle part is wound around a drive roller 7 fixedly installed on a frame 5 (fixed part), and furthermore, both ends are wound around a drive roller 7.
After winding 2R, the lower part of the support stand S is connected to the fixing part 4F installed on the pedestal 5 by stretching the center part. Like the rollers 8 and 8', the rollers 9 and 9' are used to increase the winding angle of the belt 4 around the drive roller 7 to ensure reliable driving of the belt 4. Reference numeral 11 denotes a support shaft for supporting the drive roller 7 on the pedestal 5, and as shown in FIG.

The horizontal movement of the support stand S is carried out by the rotation of a drive roller 7, as will be described later, and the frame 1 is supported on the pedestal 5 to ensure smooth horizontal movement. This supporting method is shown in FIG. 4 in the illustrated example. That is, a groove 1M is formed in the horizontal direction on the outer surface of the side frame body 1S of the frame 1, and a support roller 18 supported by a pedestal 5 is inserted into this groove 1M, so that the support pedestal S It is supported by a pedestal 5 (fixed part). This support roller 18 is rotatably held relative to the support shaft 17.

The roller 18 has a width of groove 1M (size in height direction)
It is made slightly smaller than the above, and allows smooth insertion into the groove 1M. 14 is a fixture for the support shaft 17. The material size of each member of this support mechanism is set so that it has sufficient mechanical strength to support the weight of the support table S and the patient K.

In addition, in the illustrated example, rollers 1 are provided at both ends of the support stand S.
Although rollers R and 2R are arranged one above the other, in this arrangement, unless the diameters of rollers 1R and 2R are set small, it is disadvantageous for the support stand to scoop up the object (patient). For this purpose, it is desirable to reduce the thickness of the end portion of the support base S by, for example, positioning the lower roller 2R diagonally downward.

The operation of the electric motor 12 for rotating the support stand S, especially its endless belt 3, the drive electric motor 13 for horizontally moving the support stand S, and the hydraulic cylinder 15 for moving the pedestal 5 up and down are necessary for transferring the patient K. Although these operations are performed sequentially, these operations are performed as appropriate by operating the operation buttons P and switch T on the operation box 21, as shown in FIG.

Signals from the operation box 21 are input to a controller 22, which outputs signals necessary to operate the electric motors 12, 13 and the hydraulic cylinder 15, as will be described later. 23 is a power supply, 25 and 26 are switching circuits, and the motor 1 is controlled by a signal from the controller 22.
Controls the operations of 2 and 13. The electric motors 12 and 13 are reversible electric motors, and the controller 22 is connected to the operation box 2.
Based on the signal from motor 1, a signal for either forward rotation or reverse rotation is transmitted to switching circuits 25 and 26, and switching circuits 25 and 26 also control the rotational direction of each electric motor 12 and 13 based on the signal. .

The controller 22 transmits a signal for controlling the operation of the hydraulic cylinder 15 to the voltage servo valve 27, and the hydraulic power source 2
The hydraulic pressure from 4 is supplied to each hydraulic cylinder 15 based on a signal.

Although the control system diagram shown in FIG. 7 schematically shows the basic configuration, various devices are specifically added.

Although the on/off control method is illustrated in which the operation button P is continuously pressed and the button P is stopped from moving the support table S or transferring the patient K, the on-off control method is not limited to the illustrated example. It is also possible to enter this value when setting or knowing the patient transfer distance and control the movement of the endless belt or support base in accordance with this input value. You may input a digital value,
Furthermore, it is also possible to install a microcomputer to control the amount of movement and the amount of rotation of the endless belt to match the set values. It is also conceivable to add various functions and devices to such a specific device.

In the above configuration, transport of patient K will be explained with reference to FIG. 8 1-7 show the sequence of transfer and also the sequence of operation of the device.

In addition, in FIG. 8, the relationship between the support stand S and the patient K is schematically shown. In particular, regarding the support stand S, the endless belt 3 that is directly related to patient transfer is
An end belt 4 and driving rollers 6 and 7 for both belts 3 and 4 are shown as representatives. In addition, in FIG. 8, the endless belt 3 and the belt with ends 4 are marked with black circles or triangular arrows at regular intervals on the belt line, and the belts with black circles are attached to the partition wall W. The triangular arrow indicates that it is not displaced relative to the partition wall W, that is, it is in a stationary state, and the triangular arrow indicates that it is displaced relative to the partition wall W, that is, that it is moving in the direction of the arrow.

In the illustrated example, the operation of transporting the patient K on the operating table D through the partition wall W to the transport vehicle H in the outer room will be described. Also, the vertical movement of the drive roller 6 and the support base S,
It is assumed that the horizontal movement is performed by the operation described above.

First, it is necessary to advance the support table S toward the operating table D. If the support table is located on the outside chamber side as shown in FIG. 1, the support table moving mechanism is operated,
That is, at the same time as the drive roller 7 is rotated, the drive roller 6 is also rotated. This drive roller 6
What drives the endless belt 3 of the support stand S
This is to prevent damage caused by contact (damage due to sliding contact) when the top surface of the unit comes into contact with members, walls, etc. of the outer chamber.

By rotating the drive roller 7, the upper left side of the belt 4 with an end is pulled to the right, so that the support stand S
The whole thing moves to the right.

When the support table S moves and reaches the position of the operating table D, the height of the support table S is such that the lower side of the belt 4 with an end matches the position of the upper surface of the operating table D (back side of the patient K).
FIG. 2 shows this state, and the illustrated example shows a state in which it is displaced downward.

As this state progresses further, the support table S advances while the upper surface of the endless belt 3 and the lower surface of the end belt 4 remain stationary relative to the fixed portions, that is, the back of the patient K and the upper surface of the operating table D. And then,
Therefore, the right end of the support table S enters between the patient K and the operating table D. As a result, the support stand S scoops up the patient K, as shown in Fig. 3.
The state will be as follows. FIG. 3 shows a state in which the rotational drive of both drive rollers 6 and 7 has been stopped and the scooping up of the patient K has been completed.

Once the patient has been scooped up from the operating table D, the patient K is then transferred to the outside room, but in this case only the drive roller 7 is driven to rotate as shown in FIG. Then, as shown in the drawing, only the upper surfaces of both belts 3 and 4 are pulled, and the entire support stand S is moved to the left, and the patient K is quickly moved by the rotation of the endless belt 3. It will be moved to the left. In other words, the amount of movement of the patient K is the amount obtained by adding the amount of rotation of the endless belt 3 to the amount of movement of the support table S, and the movement speed increases. This is because the drive roller 6 is not rotated and the upper surface of the endless belt 3 is moved to the left by the left side of the frame 1 as the support base S moves as shown in the drawing.

Therefore, by rotating the drive roller 7, the patient K can be quickly transferred to the outside room side, and the state shown in FIG. 5 can be obtained. The state in FIG. 5 also shows a state in which both drive rollers 6 and 7 are stopped. Patient K is located above transport vehicle H.

Next, the patient K is lowered into the transport vehicle H, and for this purpose both drive rollers 6 and 7 are driven to rotate in the same direction. Then, the same state as in Figs. 1 and 2 is reproduced, and the upper surface of both belts 3 and the lower surface of the belt with ends 4 become stationary, and the patient K maintains the same position as in Fig. 5, as shown in Fig. 6. The support stand S moves to the right. When this state progresses, the patient K is lowered onto the transport vehicle H, as shown in FIG. 7, and the transfer of the patient K is completed.

When the patient K is transferred from the outside room to the operating room in the opposite manner to the above, the operating procedure is almost the same as above, but the drive rollers 6 and 7 need to be driven to rotate in the opposite direction.

The present invention is not limited to the illustrated example,
Various variant embodiments are possible. First, the frame, which is the main component of the support base, is formed by joining plates together in the illustrated example, but in other cases, for example, a large number of rollers may be arranged between both side plates.
It is also possible to surround the entire circumference with an endless belt.

As mentioned above, it is desirable to position the rollers that wind the endless belt diagonally below the position of the endless belt rollers in order to make the ends of the support base thinner. It is desirable to devise measures such as locating it outward and making it small in diameter.

An example was shown in which both drive rollers were installed on a pedestal, but
Since a pedestal is not necessarily required, both drive rollers and their drive sources are installed on a fixed part such as a window. As the drive source, not only an electric type but also a hydraulic or pneumatic drive mechanism can be used.

Further, although the illustrated embodiment has a configuration in which the end belt is rotated by a drive roller to move the support base, the drive roller for rotating the end belt may be omitted.

Another method is to attach a frame integral with the frame below the frame, form racks on the sides of this frame (on both sides of Figure 3), and drive the pinion that meshes with the racks using a drive motor or the like. Possible methods include a method of rotationally driving the device.

In addition, in the illustrated example, the support base is supported by the pedestal,
Although the support base is moved up and down by moving the mount up and down, it is not necessarily necessary to move the support base up and down. is supported. Even in the case of the embodiment in which vertical displacement is performed, it is not limited to a hydraulic mechanism, but a mechanism using a cam or a mechanism using a screw feed may also be adopted. A patient weight indicator may also be provided.

The device of the invention can transport not only patients but also other heavy objects. In this case, it is preferable to use a toothed chain instead of a belt. Therefore, the invention is not limited to belts only.

As described above, the object transfer device of the present invention can transport objects more reliably than conventional devices. In particular, since the endless belt itself surrounding the frame on which the object is mounted is actively driven and rotated, the mounted object can be reliably transported.

Furthermore, the entire support base does not slide into contact with other fixed parts, and especially when the surrounding endless band-shaped body comes into contact with the fixed part, it eliminates the state of relative displacement and forms a stationary state. Objects can be transferred without causing damage to the endless strip.
It can be effectively used as a patient transport device in hospitals, and its effects are remarkable. In particular, in the present invention,
Since the driving roller of the belt can be installed at a fixed part, the device is stabilized and patients can be transferred smoothly. Furthermore, even when the end band is in contact with the operating table or bed, only the endless band can be rotated, making the transfer operation smooth and easy.

[Brief explanation of drawings]

Fig. 1 is a diagram schematically showing the entire device when an embodiment of the present invention is installed in a hospital window, Fig. 2, Fig. 3, and Fig. 4 show the structure of the support stand and its support construction method. FIG. 5 is a diagram showing the configuration of a part of the frame, FIG. 6 is a diagram schematically showing both the upper and lower belt drive mechanisms, and FIG. 7 is a diagram showing the schematic configuration of the operation control system of the support base. FIGS. 1 to 7 are diagrams for explaining the order of transferring objects and the operation of the apparatus. 1...Frame, 1F...Frame body, 1S
... Frame side plate, 1M ... Groove, 2 ... Frame, 1
R, 2R...Roller, 3...Endless belt,
4... Ended belt, 5... Frame, 6, 7... Drive roller, 8, 8', 9, 9'... Roller, 10, 1
1... Support shaft, 12, 13... Electric motor with reducer, 1
5... Hydraulic cylinder, 18... Support roller, 21
...Operation box, 22...Controller, 23...Power source, 24...Hydraulic power source, 25, 26...Switching circuit, 27...Electrohydraulic servo valve, D...Operating table,
H...Carrier, K...Patient, M...Window, W...
Partition wall.

Claims (1)

[Claims] 1. A frame on which an object to be transferred is mounted, surrounded in the transfer direction by an endless strip, and supported so as to be movable in the horizontal direction with respect to a fixed part; A support consisting of an end band-shaped body whose sides are in surface contact so as to prevent relative displacement, and which is wound around rollers disposed on both sides of the frame and whose respective ends located on the lower side are fixed to a fixed part. An endless strip drive mechanism for rotating the endless strip, which includes a stand, a drive roller that is installed on a fixed part and around which the lower side of the endless strip is wound, and a drive source that rotationally drives the drive roller. and a drive roller that is rotatably installed on a fixed part and around which the middle of the endless strip is wound, and a drive mechanism that rotationally drives the drive roller, and the support base is moved in the direction of rotation of the endless strip. and a support table moving drive mechanism for reciprocating the object, the endless band-like object being rotated by the endless band-like object drive mechanism during transfer other than when scooping up and lowering the object, and the support table moving drive mechanism is provided. According to
The object located on one side of the support table movement direction is scooped up and placed on the support table by the horizontal movement of the support table, which is driven during the entire transfer period from scooping up to descent, and placed on the support table and placed on the other side. 1. An object transfer device characterized by being capable of being lowered and transferred.