JPS6136276Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of an operating table in which the table is configured to be movable in the X and Y directions.

Normally, this type of operating table has a movable table that is movable in the X direction relative to a base frame that can be attached to and removed from the base, and a table that is movable in the Y direction is mounted on this movable table. . This is because it is necessary to displace the table in the X and Y directions because it is necessary to displace the patient mounted on the table during the operation for convenience of the operation. The movable table and the movable table are moved in the X direction and the Y direction, respectively, by a displacement drive system interposed between the base frame and the movable table, and between the movable table and the movable table. This drive system is based on a combination of rack and pinion, with the pinion driven either electrically or manually.

By the way, after the completion of the surgery, the table needs to be returned to its original position (original position) with respect to the base, that is, the base frame. This is because the table must be transferred from the base to the stretcher in order to transport the patient after surgery using the stretcher, but in order to do this, the table must be returned to its original position. If this is not done, a biased force will act on the table during transfer, making it unstable, and in some cases, the table may tilt, creating a risk that the patient may fall.

For this reason, conventionally, during transfer, the drive system is activated to return to the original position while visually observing scales, marks, etc. attached to the movable base or table. However, such operations are laborious and time consuming and inefficient, and in some cases, the user may forget to perform the return operation.

The present invention provides an improved operating table to overcome these conventional drawbacks.

The feature of the operating table of the present invention is that a detection means is provided between the base frame and the movable table, and between the movable table and the table to detect in which direction the table is displaced from the original position. The movable base and the table are configured to return to their original positions by output, and when the transport vehicle engages with the base during transfer, each of the above-mentioned detection means and return driving means are operated to perform the return operation to the original position. Specifically, a switch is attached to the base at the position where the transport vehicle engages, and this switch is operated by the engagement (docking) of the transport vehicle to issue the above command. It is designed to output.

The illustrated embodiment will be described below.

FIG. 1 is a perspective view of the operating table D with the table 5 mounted on the base 1, and FIG. 2 is a perspective view of the transport vehicle S. In these figures, 3 is the base frame body,
By inserting an engaging tube (not shown) protruding below the base frame 3 into an engaging portion provided on the base 1, the upper part of the base frame 3 is inserted as shown in FIG. is placed on the base 1. Therefore, this upper part (table part) can be separated from the base 1 by pulling the upper part upward from the base frame body 3.

When placed on the base 1 as shown in Fig. 1,
The base frame body 3 is fixed integrally with the base 1. A movable table 4 is placed on the base frame 3 so as to be movable in the X direction, and a table 5 is placed on the movable table 4 so as to be movable in the Y direction. Details of these configurations will be described later. 6 is a guide rail attached to the side of the table 5.

The transport vehicle S is mainly composed of a Y-shaped base frame 9 and a receiving frame 10 mounted on the base frame 9 via supports 8, and these are made movable by wheels 12, 12'. ing. When the operating table D engages with the base 1, the Y-shaped base frame 9 will sandwich the base 1.

In this engaged state, the receiving frame 10 is located below the base frame 3, and when the receiving frame 10 is displaced (raised) upward as shown by the arrow in this state, the receiving frame 10 protrudes below the base frame 3. The engagement pin 7 is inserted into the engagement hole 10 of the receiving frame 10.
inserted into H. When the receiving frame 10 is further raised, the upper members (the base frame, the movable base, and the table) of the base frame 3 are separated from the base 1.

Next, when the transport vehicle S is moved and the receiving frame 10 is lowered, the transfer is completed for the time being. In this case, the receiving frame 10 is driven up and down by manually rotating the drive shaft 11 using a handle (not shown) to operate a screw feeding mechanism inside the support 8.

It is clear that when the table portion is transferred, the table 5 is returned to its original position relative to the base 1 to ensure work safety.

The configuration for returning to the original position will be explained below with reference to FIG. In Fig. 3, 13 indicates a power supply section,
Electric power is supplied to the electric motors 15 and 21 via the control device 14.

First, a configuration in which the movable base 4 is movable with respect to the base frame 3 will be described. Reference numeral 15 denotes an electric motor installed on the base frame 3, and its rotational output is transmitted through a link rod 16 to rotate a worm 17, rotate a worm wheel 18 that meshes with the worm 17, and is converted and transmitted in the right angle direction. A pinion 20 is rotationally driven via a pinion 19.

The pinion 20 is attached to the rack 4 attached to the movable base 4.
L, and the rotation of the pinion 20 causes the movable base 4 to be displaced in the X direction.
The displacement of the movable base 4 in the X direction is guided by a structure in which a sliding body 28 fixed to a guide groove 3M formed in the base frame 3 is inserted and slid. The guide groove 3M is formed to have a constant length in the X direction. The above-mentioned displacement drive mechanism using the rack and pinion also functions as a drive mechanism for returning the base frame 3 of the movable base 4 to its original position.

The table 5 is mounted on the movable base 4 so as to be displaceable in the Y direction. Specifically, roller groups 27 and 27' on the movable base 4 are inserted and rotated into guide grooves 5M formed on the lower surface of the table 5. configured to be
It is restricted in the Y direction and can be displaced.

The displacement is driven by a rack and pinion system.
The rotation output of the worm 1 is converted in a right angle direction via a worm mechanism consisting of a worm 23 and a worm wheel 24, which are disposed between the connecting rods 22 and 25, and drives the pinion 26 to rotate. The pinion 26 is engaged with a rack 5L provided on the underside of the table 5, and the rotation of the pinion 26 rotates the table 5 in a Y-direction.
It is apparent that this displacement drive mechanism also functions as a return mechanism for returning the table 5 to its original position relative to the movable base 4.

The amount of displacement of the movable base 4 with respect to the base frame 3 and the amount of displacement of the table 5 with respect to the movable base 4 are determined by the control device 1.
4 to control the amount and direction of rotation of the electric motors 15 and 21. 30 is an operation switch box (remote control switch box) for controlling the same, and 29 is a hose for covering a lead wire connecting this box 30 and the control device 14.

The displacement direction detection means for detecting in which direction the movable base 4 and table 5 displaced as described above are displaced with respect to their original positions will be described below.

In the illustrated example, a cam system that combines a cam and a switch is used to detect the displacement direction. First, as for the means for detecting the displacement in the X direction, a cam _K1 is attached to the base frame 3, and three switches _S1 to _S3 that engage with the cam are disposed on the movable frame 4. The length of the cam _K1 is
In the illustrated state, the switches _S1 and _S3 on both sides are set equal to the displacement (stroke) of the cam.
In _this state, the movable base 4 is in the original position relative to the base frame 3, and both switches
Switches _S1 and _S3 are in operation (ON) and outputting signals. However, if the movable base 4 is now displaced to the left in FIG. 3, switch _S3 will continue to be ON, but switch _S1 will move away from the cam _K1 and go into the OFF state. Such a detection signal DS is sent to the control device 1.
When the movable base 4 is displaced in the X direction and to the left, the switch _S1 remains on and the switch _S3 is turned on.
is turned off to detect a displacement to the right.

The means for detecting the displacement direction of the table 5 with respect to the movable base 4 is a cam _K2 and corresponding switches _S1 to _S3.
The cam K ₂ has switches S ₁ to _{S 3} fixed to the lower surface of the table 5 and fixed to the movable base 4 side. The length of this cam _K2 is also set equal to the displacement amount (displaceable stroke) of the table 5 with respect to the movable base 4. The detection of the displacement direction of the table 5 by the cam K ₂ and the switches S ₁ to _{S 3} is the same as the cam K ₁ and the switches S ₁ to _{S 3} that detect the displacement of the movable table 4, and the details are omitted, but the displacement detection is Signal TS is similarly input to control device 14 .

By the way, these two detection means have three switches.
S ₁ to _{S 3} are provided, but the switches S ₁ and S 3 on both sides are
_S3 functions as displacement direction detection means. The switch S ₂ located in the center has a function to detect the limit of the displacement amount, that is, the signal is output at the moment when the displacement progresses and the end of the cam K ₁ (K ₂ ) leaves the switch S ₃ (on→off). The configuration is such that DS (TS) is input to the control device 14 and the rotation of the electric motors 15 and 21 is stopped.

No matter which direction the cam K ₁ (K ₂ ) is displaced, the above function is developed and the amount of displacement is set to the length of the cam. In other words, a length that can be displaced is set, and the length of the cam is made equal to this length.

The displacement direction detection means is as described above, but it is necessary to restore the displacement when the table portion is transferred from the base 1 to the carrier S, and the detection signals DS and TS are input to the control device 14. However, the operation of the return driving means only needs to be started at the time of transfer.

Therefore, according to the present invention, the transport vehicle S is connected to the operating table D.
It is configured to output a command signal for a return operation when it engages (docks) with the base 1 of. In the illustrated embodiment, a switch R is attached to the lower part of the base 1, that is, at a position where the base frame 9 of the carrier S is engaged, and when the carrier S is engaged, the pin P implanted in the base frame 9 is connected to the switch R. The control device 14 operates and sends a signal indicating completion of engagement.
to communicate. A displacement direction detection signal input to the control device 14 by this signal (command) transmission
DS and TS are processed and the electric motors 15 and 21 are driven to return to their original positions. The return to home position operation is performed using a signal in which both switches S ₁ and S ₃ in each detection means are turned on.
When DS and TS are output, it is stopped and the return is completed.

After returning to the original position, the table portion (the table portion with the patient placed above it) is transferred to the transport vehicle.

The invention is not limited to the illustrated embodiment. In particular, as for the displacement direction detection means, in addition to the cam method using a combination of a cam and a switch, various mechanical or electrical methods such as a method for measuring the amount of rotation of a pinion can be adopted. As for the displacement drive means, other than the rack and pinion method, a screw feed method or the like can be adopted. The shapes of the base frame, movable base, and table are not limited to the illustrated examples.

The shape of the transport vehicle is not limited to the illustrated example, and the mechanism for detecting engagement with the base and outputting a command may also be a mechanical method other than the electric type (switch) shown in the figure, for example, for engagement. Therefore, it is also possible to implement a system in which a lever or pin is inserted inside the base to directly operate the control device.

According to the present invention, when the patient is transferred to the transport vehicle together with the table after the surgery, when the transport vehicle is engaged with the base of the operating table, the table automatically moves in the X and Y directions and returns to its original position. Therefore, it is possible to obtain an operating table with high operability, which eliminates the number of steps required for the conventional return-to-home operation, and allows the operation to be performed quickly and efficiently. In addition, there is no need to forget the operation of returning to the original position as in the prior art, and dangers such as the patient falling are avoided, resulting in a highly safe operating table.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the appearance of the operating table, FIG. 2 is a perspective view showing the appearance of the transport vehicle, and FIG. 3 is a view showing the internal configuration. 1...Base, 2...Base frame, 4...Movable base, 5
...table, 7...engaging pin, 8...post, 9
... Base frame, 10 ... Receiving frame, 13 ... Power supply section, 14
...Control equipment, 15,21...Electric motor, 17,2
4... Worm, 18, 25... Worm wheel, 20, 26... Pinion, 4L, 5L... Rack, 27, 27'... Roller group, 28... Sliding body, D... Operating table, S... ...transport vehicle, K ₁ , K ₂ ...
Cam, S ₁ to S ₃ , R... switch, DS, TS... displacement direction detection signal, P... pin.

Claims (1)

[Scope of utility model registration request] It has a base frame that is detachably connected to the base, and includes a movable base that is movable in the X direction with respect to the base frame, and a table that is movable in the Y direction with respect to the movable base. , in an operating table configured such that the table is movable in the X and Y directions, and the transport vehicle is engaged with the base so that the upper part of the base frame can be separated from the base and transferred to the transport vehicle. X-direction displacement detection means for detecting the direction in which the table is displaced from its original position with respect to the frame, Y-direction displacement detection means for detecting the direction in which the table is displaced from its original position with respect to the movable base, and X-direction displacement detection means. X-direction driving means for driving the movable table back to its original position relative to the base frame body by the output of X. Y direction movable table type operating table.