JP2001129039A - Operating table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and speedily detach a top of an operating table from and attach it to a column. SOLUTION: The operating table is provided with a column which is placed on the floor, a top which is placed on the column, a joint 3 which detachably/ attachably couples the top to the column and a hydraulic driving device for driving the top and the column. The joint 3 has parts 13 and 12 with projections and depressions which can be engaged to the table and the column and can be detached and lock means 16 and the like for locking the coupled state of the parts 13 and 12 with projections and depressions by the hydraulic driving device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating table in which a table is detachably mounted on a column.

[0002]

2. Description of the Related Art A conventional operating table includes a column placed on the floor, a table placed on the column, and a joint for detachably connecting the table to the column. The joint is configured so that a male screw on the column side is rotated by an electric motor and screwed into a female screw on the table side.

[0003] Each part such as a back plate and a leg plate of the table can be tilted independently, and an electric motor for driving each part is provided in the vicinity of the joint. The electric motor is controlled by a computer provided on the column side,
Each part such as a leg plate is inclined to a desired position.

[0004]

The conventional operating table joint has a problem that it takes time to attach and detach the table. In addition, since an electric motor is used as a driving device of the male screw and the power is transmitted to the male screw by a transmission device such as a gear, a pulley, a belt, etc., the operating table becomes large and complicated as a whole. There is also a problem.

In addition, since electric cables such as a power cable and a signal cable extend from the column to the table, the electric cables must be connected and detached when the table is attached and detached. Further, the electric cable may obstruct the operation or the like in some cases.

[0006]

Means for Solving the Problems To solve the above problems, the invention according to claim 1 is a column (1) placed on the floor and a table (2) placed on the column (1).
A joint (3) for detachably connecting the table (2) to the column (1), and a hydraulic drive device for driving the table (2) and the column (1). 3) The concave and convex portions (13, 12) which are detachably provided on the table (2) and the column (1).
An operating table having lock means (16 and the like) for locking the connected state of the concave and convex portions (13, 12) by the hydraulic drive device is employed.

According to a second aspect of the present invention, the hydraulic drive unit is divided into a hydraulic drive unit in a table (FIG. 6) and a hydraulic drive unit in a column (FIG. 5) having independent oil circulation paths. The operating table according to claim 1 is adopted.

According to a third aspect of the present invention, the electric cable (33) of the hydraulic drive device is connected to the joint (3).
The operating table according to claim 1 or 2, which passes through the inside, is adopted.

According to a fourth aspect of the present invention, the concavo-convex portions (13, 12) of the joint (3) are provided with opposing surfaces (34, 35) which face each other when the joint (3) is joined. The connection terminal (36,
37) are provided on the opposing surfaces (34, 35), respectively, and one connection terminal (36) is urged to protrude from one surface (34) toward the other surface (35), while the other connection terminal (36) is urged toward the other surface (35). The operating table according to claim 3, wherein the connection terminal (37) is formed so as to be flush with the other surface (35).

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 3, this operating table includes a column 1 placed on the floor of an operating room, a table 2 placed on the column 1, and a table 2 removably connected to the column 1. And a hydraulic drive device for driving the table 2 and the column 1 as shown in FIGS. 5 and 6.

The column 1 has casters 4 at four corners for movement on its base 1a. In addition, a hydraulic cylinder 5 is provided for each caster 4 so that the operating table can be fixed at a fixed position. The hydraulic cylinder 5 is fixed in the vertical direction, and a leg 6 is attached to the tip of the piston rod. When the installation position of the operating table is determined, the hydraulic cylinder 5 starts operating by a hydraulic drive device described later, the leg 6 hits the floor, and the operating table is
Together with the operating table and the operating table is set in place. The column 1 has a receiving table 7 for the table 2. The receiving table 7 is connected to the main body of the column 1 through a universal joint (not shown) and a slide rail, and causes the table 2 to perform various operations such as vertical movement, vertical rotation, horizontal rotation, and turning by a hydraulic drive device described later. In addition, the code | symbol a in FIG. 1 shows a turning angle,
Reference symbol b in FIG. 2 indicates a vertical rotation angle.

The table 2 is a board on which a patient is placed, and various tables are prepared according to the contents of the operation and the like. The table 2 in the illustrated example is a standard type table, and is divided into a head plate 8, a back plate 9, a waist plate 10, a leg plate 11 and the like corresponding to a human body.
The portion of the waist plate 10 is connected to the receiving table 7 of the column 1. Although not shown, the urology table has a waist plate further divided into two parts, and is connected to a column at the position of the back plate. The headboard 8 and the backboard 9 of the table 2,
Each part such as the waist plate 10 and the leg plate 11 is connected to other parts via a hinge (not shown), and can be rotated by a manual operation or a hydraulic drive device described later. For example,
In the standard type table, the head plate 8 can be manually rotated with respect to the back plate 9 within a range of an angle c, and the back plate 9 and the leg plate 11 are moved relative to the waist plate 10 by a hydraulic drive in a range of angles d and e, respectively. Can be turned up and down.

The joint 3 has the structure shown in FIG. 3, and is provided between the waist plate 10 of the table 2 and the cradle 7 of the column 1 in FIG. The joint 3 has a bar-shaped convex portion 12 hanging from the lower surface of the waist plate 10 of the table 2 and a vertical hole-shaped concave portion 13 provided on the upper surface of the receiving base 7 of the column 1 and into which the convex portion 12 enters. The convex portion 12 is a large-diameter shaft portion 1.
2a and a small-diameter shaft portion 12b ahead of the large-diameter shaft portion 12b.
A conical shaft portion 12c is provided at the boundary between the shaft portion a and the small diameter shaft portion 12b. The concave portion 13 has a large-diameter hole portion 13 corresponding to the large-diameter shaft portion 12a, the conical shaft portion 12c, and the small-diameter shaft portion 12b of the convex portion 12.
a, a conical hole 13c and a small hole 13b.

The joint 3 is provided with concave and convex portions 13 and 12.
And a lock means for locking the connected state by the operation of a hydraulic drive device described later. That is, an annular groove 14 is formed at the tip of the small-diameter shaft portion 12b of the convex portion 12, and a large number of balls 15 fitted into the annular groove 14 are annularly provided in the small-diameter hole portion 13b of the concave portion 13. Small-diameter hole 13 of recess 13
b is formed by a cylindrical piston 16, a horizontal hole 17 is formed at the upper end of the cylindrical piston 16, and a ball 15 is provided in each horizontal hole 17.
Is stored. The cylindrical piston 16 is housed in a cylinder 18 buried in the receiving table 7, and the cylinder 18 is provided with oil flow ports 19 and 20. FIG. 3 shows a locked state in which the ball 15 is pushed into the annular groove 14 to lock the connected state of the concave and convex portions 13 and 12. In this state, the oil is discharged from the lower port 20 to the cylinder 18.
When it flows into the cylinder 18 and flows out of the cylinder 18 from the upper port 19, the cylindrical piston 16 rises and the ball 15 can be retracted into the annular groove 21 on the cylinder 18 side, and the locking means is unlocked. As a result, the convex portion 12 becomes the concave portion 1
3 can be removed.

The hydraulic drive is divided into an in-column hydraulic drive and an in-table hydraulic drive, each having an independent oil circulation path.

As shown in FIG. 5, the hydraulic drive device in the column includes an oil tank 22, a hydraulic pump 23, a relief valve 2
4, a hydraulic circuit having solenoid valves 25a, 25b, 25c, and hydraulic cylinders 26a... Are housed in the column 1 as a whole. Solenoid valves 25a, 25b, 2
5c and hydraulic cylinders 26a... Are provided in plural sets for vertical movement, turning, and tilting of the receiving table 7.

As shown in FIG. 6, the in-table hydraulic drive includes an oil tank 27, a hydraulic pump 28, a relief valve 29, solenoid valves 30a, 30b, 30c, hydraulic cylinders 31a,. And is housed in the cavity of the waist plate 10 of the table 2 as a whole. Solenoid valves 30a, 30b, 30c and hydraulic cylinder 3
.. Are provided for tilting the back plate 9 and the leg plate 11 of the table 2. The number of solenoid valves 30a, 30b, 30c and hydraulic cylinders 31a... Differs depending on the type of table 2 and the like. The oil tank 27 includes a cylinder 27a and a piston 27b. One cylinder chamber defined by the piston 27b is filled with oil, and the other cylinder chamber is opened to the atmosphere. An oil filtration filter 32 is housed in the cylinder chamber filled with oil. Oil tank 2
Since 7 is closed by the piston 27b, it is laid horizontally in the table 2 without causing oil leakage, thereby reducing the thickness of the table 2. When oil is sent from the oil tank 27 to the hydraulic cylinders 31a... By driving the hydraulic pump 28, the piston 27b in the oil tank 27 moves toward the filter 32 by the action of the atmospheric pressure, and the electromagnetic valves 30a, 30
The hydraulic cylinders 31a ...
When the oil returns to the oil tank 27 from above, the piston 27b in the oil tank 27 moves toward the filter 32 side by the hydraulic pressure. This oil tank 27 can also be adopted in the above-mentioned column hydraulic drive device.

The hydraulic drive unit in the column and the hydraulic drive unit in the table are controlled by a computer (not shown). An operation panel (not shown) is connected to the computer main body by a cable. As shown in FIGS. 3 and 4, a signal cable connecting the computer body and the hydraulic drive unit in the table, and a hydraulic pump 2 of the hydraulic drive unit in the table
A plurality of electric cables 33 such as a power supply cable for supplying power to the joint 8 pass through the joint 3. A connector is formed between the concave and convex portions 13 and 12 of the joint 3 to connect and disconnect the electric cable 33 when attaching and detaching the table 2 to and from the column 1. That is, the conical holes 13c formed in the concavo-convex portions 13 and 12 of the joint 3 and the conical surfaces 34 and 35 of the conical shaft portion 12c form opposing surfaces that face each other when the joint 3 is joined. Connection terminals 36 and 37 of the electric cable 33 are provided respectively. The connection terminals 36 and 37 are prepared for each electric cable, and are arranged on the conical surfaces 34 and 35 at regular intervals along a circle centered on the conical axis. As shown in FIG. 4, one connection terminal 36 is urged by a compression coil spring 38 so as to protrude from one conical surface 34 toward the other conical surface 35, and the other connection terminal 37 is connected to the other conical surface. It is formed so as to be flush with 35. The connection terminals 36 and 37 made of a conductive material are covered with a pipe-shaped insulator 39 in the uneven portions 13 and 12. When the table 2 and the column 1 are docked, the convex portion 12 enters the concave portion 13, and when the conical surfaces 35 and 34 approach each other as shown in FIG. 4, the tip of one connection terminal 36 is located on the other of the conical surfaces 35. The surface of the connection terminal 37 is brought into contact with the connection terminal 37 while being rubbed. For this reason, foreign substances such as dust and oil are removed from the surface of the connection terminals 37, and the connection terminals 36 and 37 are removed.
They are properly connected to each other, and the electric conductivity is improved.

Next, the operation of the operating table having the above configuration will be described.

The table 2 is carried on a column 1 on a stretcher (not shown). When the table 2 stops on the column 1, the column 1 is raised by the operation of the hydraulic drive unit in the column, and the projection 12 on the table 2 side enters into the recess 13 on the receiving base 7. At this time, recess 1
The cylindrical piston 16 in 3 is at the ascending position, and the small-diameter shaft portion 12b of the convex portion 12 penetrates into the cylindrical piston 16 deeper than the ball 15. At this time, the connection terminals 36 and 37 of the electric cable 33 come into contact with each other. When the concave and convex portions 13 and 12 of the joint 3 are connected and the connection of the electric cable 33 is completed, the cylindrical piston 16 is lowered by the hydraulic drive device in the column, and the ball 15 enters the annular groove 14 of the convex portion 12 and the joint 15 3 is locked. Thereby, the table 2 floats on the stretcher and is fixed on the receiving table 7 of the column 1. Thereafter, the stretcher is removed from the column 1.

When the operation panel is operated during the operation, the receiving table 7 on the column 1 performs desired operations such as vertical movement, tilting, turning, etc. by driving the hydraulic drive device in the column, thereby moving the table 2 to a desired position. Set to posture. In addition, the back plate 9, the leg plate 11, and the like of the table 2 are inclined by the drive of the intra-table hydraulic drive device to change the posture of the patient on the table 2. Although the hydraulic drive unit in the table tilts and turns with the table 2, no oil leakage occurs because the oil tank 27 is sealed by the piston 27b.

When the table 2 is to be replaced, the column 1 is extended, in other words, the receiving stand 7 is raised, and the carriage of the stretcher is put under the table 2. Next, the cylindrical piston 16 is raised by driving the hydraulic drive unit in the column to unlock the joint 3. Then column 1
In other words, the cradle 7 is lowered and the table 2 is placed on the stretcher. The column 1 is lowered further, leaving the table 2 on the stretcher, and the uneven portion 1 of the joint 3 is lowered.
3 and 12 are separated from each other, and the connection terminal 3 of the electric cable 33 is
6, 37 are separated. Then, the table 2 is removed from the column 1 by the stretcher, and a new table 2 is removed.
Is transported by a stretcher. The new table 2 is fixed on the receiving table 7 of the column 1 by an operation similar to the above-described operation.

[0024]

According to the first aspect of the present invention, a column placed on the floor, a table placed on the column, and a joint for detachably connecting the table to the column,
In an operating table provided with a hydraulic drive device for driving a table and a column, a joint includes an uneven portion provided to be detachable from the table and the column, and locking means for locking a joint state of the uneven portion by the hydraulic drive device. Because of this, attachment and detachment of the table can be performed easily and quickly. In addition, since it is not necessary to provide an electric motor, a gear, a pulley, a belt, and other transmission devices as a conventional joint driving device, the operating table can be reduced in size and simplified as a whole.

According to the second aspect of the present invention, since the hydraulic drive unit is separated into a hydraulic drive unit for the table and a hydraulic drive unit for the column which are independent of each other, the oil circulation path is separated from the oil from the joint. Leakage can be prevented.

According to the third aspect of the present invention, in the operating table according to the first or second aspect, since the electric cable of the hydraulic drive device passes through the joint, the electric power from around the table and the column. Exposure of the cable can be prevented.

According to the fourth aspect of the present invention, in the operating table according to the third aspect, the concavo-convex portion of the joint is provided with a facing surface facing each other when the joint is connected, and the connection terminal of the electric cable is provided on the facing surface. One connection terminal is provided so as to protrude from one surface toward the other surface, and the other connection terminal is formed so as to be flush with the other surface. Therefore, when the table is attached to and detached from the column, connection and disconnection of the electric cable can be performed at the same time. Therefore, the work of replacing the table is simplified and speeded up.

[Brief description of the drawings]

FIG. 1 is a plan view of an operating table according to the present invention.

FIG. 2 is an elevation view of the operating table shown in FIG. 1;

3 is a partially cutaway longitudinal sectional view showing a joint of the operating table shown in FIG. 1;

FIG. 4 is an enlarged view of an electric cable connection terminal in the joint shown in FIG. 3;

FIG. 5 is a hydraulic circuit diagram of the in-column hydraulic drive device.

FIG. 6 is a hydraulic circuit diagram of the in-table hydraulic drive device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Column 2 ... Table 3 ... Joint 12 ... Convex part 13 ... Concave part 16 ... Cylindrical cylinder 33 ... Electric cable 34, 35 ... Opposing surface 36, 37 ... Connection terminal

Claims (4)

[Claims] 1. An operating table comprising a column placed on the floor, a table placed on the column, a joint for detachably connecting the table on the column, and a hydraulic drive device for driving the table and the column. An operating table, wherein the joint has an uneven portion provided to be detachable from a table and a column, and a lock means for locking a connection state of the uneven portion by the hydraulic drive device. 2. The operating table according to claim 1, wherein the hydraulic drive unit has an oil circulation path separated into a hydraulic drive unit in the table and a hydraulic drive unit in the column that are independent of each other. 3. The operating table according to claim 1, wherein an electric cable of the hydraulic drive device passes through the joint. 4. A concavo-convex portion of the joint is formed with opposing surfaces that oppose each other when the joint is joined, and connection terminals of the electric cable are respectively provided on the opposing surfaces, and one connection terminal is connected from one surface to the other. The operating table according to claim 3, wherein the operating table is biased so as to protrude toward the surface, and the other connection terminal is formed so as to be flush with the other surface.