JPS61226044A - Operation table - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] A. Industrial Application Field The present invention relates to an operating table for carrying out a surgery on which a surgical patient is placed;
In particular, the present invention relates to an operating table equipped with a mechanism for tilting the table side of the operating table with respect to a support side such as a support table.

B. Prior Art Not only surgical operating tables but also various operating tables are constructed so that a table (usually referred to as a table top) on which a surgical patient is placed can be tilted, folded, etc.

That is, as shown in FIG. 4, a table support frame F is attached to the top of a support stand M erected on the operating table D-J- via a connecting portion C, and a table T is attached to this support frame F-H. Retained. The table T is divided into a plurality of parts T-T6, each of which is connected to the joint part K through 5. Although the support frame F is tilted at the connecting portion C,
Each table T1-T6 is folded and tilted at 1 to 5 points at the joints, respectively. Then, as shown, the entire table is formed into a desired shape suitable for surgery.

In this case, each table is tiltable relative to the table (supporting side) connected thereto, and once the tilt angle is set, it is necessary to firmly maintain the tilt angle. In order to achieve this purpose, a conventional joint has a structure as shown in FIG. Figure 5 shows a mechanism for tilting the table T8 at the tip with respect to the table T5 on the support stand side. A tooth profile G is formed. On the other hand, W is a frame integrated with the table T6, and its left end is pivotally supported on a support shaft S so as to be swingable. This frame W holds a rod R that is movable left and right by a handle H, and the left end of this rod R is connected to the lower end of a lever L that is swingable to a support shaft SP of the frame W.

Further, J is a pawl rod whose pawl is biased by /hene B so that it meshes with the tooth profile G, and a pin BP fixed on the middle of this rod J is engaged with the elongated hole of the lever L. ing. Therefore, only when the rod R is pulled to the right by the handle H, the claw rod J disengages from the tooth profile G, and the table T6 is free to tilt. When the handle H is released, the table T6 is locked (fixed) to the table T5. ) will be done.

These arrangements are examples of the prior art, but in this way the table is tiltable and remains perfectly fixed at the desired tilt angle.

C0 Problems to be Solved by the Invention The operating table equipped with a tilting mechanism as described in section 2 has the following problems.

First, in order to lock the table, sufficient pressure from the spring force acts on the pressure angle of the tooth profile, and this pressure guarantees the safety of the table, but it also reduces the operability of the handle, that is, the easy removal of the claw. Since it is also necessary for the spring force to be increased, the spring force cannot be increased. As described above, since the operability of the handle and the safety of the table conflict with each other, i-ruble is likely to occur.

The second problem is that the tooth profile and the pawl engage in stages, and it is impossible to tilt the table at any arbitrary position in a stepless manner.

Furthermore, the engagement of the nail with the tooth profile must be confirmed visually and by feeling with the hand, resulting in poor operability. Furthermore, in order to guarantee the rigidity of the table lock, it is necessary to provide the mechanism shown in FIG. 5 on both sides, which increases the number of parts, increases processing costs and material costs, and increases costs. This also poses the problem of easy failure.

The present invention aims to provide an operating table that solves these conventional problems.

Means for solving the D1 problem The basic structure is a double cylindrical structure in which a cylindrical body with a straight through hole and a cylindrical body with a spiral through hole are inserted into each other. One cylindrical body is connected to the support side of the operating table, and the other cylindrical body is connected to the table side. A roller that simultaneously passes through both page through holes of the inner cylindrical body and a moving mechanism that moves this roller in the axial direction by a screw feeding method are provided.

With the above configuration, the table can be tilted steplessly to any inclination angle by the movement of the rollers.

80 Action When a linear through hole and a spiral through hole are linked by a roller, and one of these is fixed and the other is movable, when this roller moves in the axial direction, the linking point moves relative to each other along the spiral hole. This will result in a significant displacement. Therefore, since the spiral hole is continuous, the movable side rotates steplessly.

The movement of the roller in the axial direction is irreversible because it is moved using a screw feed method, and even if a force is applied to the roller in the axial direction, the roller will not move, unless the movable side is driven to rotate the screw. The movable side remains fixed (safety) without rotating.

F. EXAMPLES The present invention will be described below with reference to examples shown in FIGS. 1 to 3.

FIG. 1 is an exploded perspective view showing each component of a tilting mechanism that constitutes the main part of the present invention, and FIG. 2 is a longitudinal cross-sectional view of the main parts constructed by combining these components on an operating table.

In Figure 1, (B) shows a spiral through hole 5 in the cylinder.
The figure H shows a cylindrical body 5 with a hole therein, and the figure (C) shows a cylindrical body 4 with a straight through hole 4H formed in the cylinder. The cylindrical body 4 is manufactured to have a larger diameter than the cylindrical body 5, so that the cylindrical body 5 can be inserted therein. The figure (A) shows a structure that is further inserted inside these double cylindrical structures, and is used to impart rotation to the cylindrical body. That is, 3 is a rotating shaft with a screw 3N provided in the intermediate distance region, and l is this screw 3N.
It is a nut that is screwed together. The outer diameter of this nut l-1 is set smaller than the inner diameter of the cylindrical body 5, so that it can be inserted into the cylindrical body 5. Reference numeral 2 denotes a roller, which is fitted into a pin IS implanted in the nut 1, and its length is 4.5 when the 100 cylindrical body 4.5 constitutes a double cylindrical structure.
It is set to a size that allows it to pass through both page through holes 4H15H at the same time. 6 is a key for transmitting the rotation of the cylindrical body 5 to the table side, as will be clear from what will be described later.

FIG. 2 shows the assembled arrangement on the operating table post 12, with T indicating the operating table table.

As is clear from the figure, the outer cylindrical body 4 is integrally fixed to the support column 12, and the inner cylindrical body 5 is rotatably supported. That is, the cylindrical body 5 is concentrically inserted into the outer cylindrical body 4 via the bush 11, and is integrally connected to the lower frame IO of the table T via the key 6. Further, a disk-shaped cover 7 having a central hole is provided at both ends of the inner cylindrical body 5.

Further, a nut 1 is fitted into the inner hole of the inner cylindrical body 5, and a screw 3N is screwed into the nut 1. Both sides of the rotating shaft 3 protrude through the cover 7, and an operating handle 9 is attached to each end via a pin 8. Therefore, when the handle 9 is manually closed, the screw 3N rotates. Then, the roller 2 is inserted through both page through-holes 4H55H and is particularly prevented from rotating by the through-holes 4H, so it moves in the axial direction. In other words, the reroller 2 is moved in the axial direction by the screw feeding method.

Since this movement of the roller 2 causes displacement along the linear through hole 4H, the cylindrical body 5 having the spiral through hole rotates in accordance with the movement of the roller 2.

This rotation of the cylindrical body 5 is transmitted to the table T via the key 6, and the table T rotates (tilts).

FIG. 3 shows a mobile operating table according to the invention. The illustrated surgical table is an example in which the entire table T is tilted relative to the support column 12 according to the present invention, and 13 is a base and 14 is a caster.

The present invention is not limited to the illustrated example, but includes the following modifications.

First, regarding the connection method between the double structure and the operating table support side,
Contrary to the illustrated example, the cylindrical body having the spiral through hole may be fixedly connected to the support stand side, and the linear cylindrical body may be connected to the table side. Further, in the screw feeding type moving mechanism, the rotation of the screw may be driven not only by a manual handle but also by an electric motor or the like.

Furthermore, the amount of rotation of this screw can be detected by an encoder or the like and converted into an amount of inclination and displayed. In the illustrated example, this tilting mechanism is provided at the connection between the support base (pillar) and the entire table, but it may also be provided at the joint between the supporting table and the table or any other joint. Regarding the shape of the spiral through-hole, although the lead may be large, it is preferable to make it small to achieve good precision. Although the screw feed type moving mechanism is not necessarily limited to being installed inside the double cylindrical structure, it is preferable to install it inside (as shown in the figure) because it is more compact.

G. Effects As detailed above, the operating table of the present invention has good operability and a large tilting force, making it easy to operate and allowing the table etc. to be tilted to any angle of inclination. can be maintained. In particular, since the rollers are moved using a screw feeding method, the table can be firmly fixed, and the inclination angle can be set steplessly.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of the main parts of the present invention, Fig. 2 is a vertical sectional view of the main parts, Fig. 3 is a diagram showing the entire operating table according to the invention, and Fig. 4 is a conventional operating table. FIG. 5 is a diagram showing a tilting mechanism in a conventional operating table. 1... Nut, IS-- Pin, 2 @ φ roller, 3φ... Rotating shaft, 3N fist 1 screw, 4.5... Cylindrical body, 4H... Straight through hole, 5H... - Spiral through hole, 6 - key, 7 - cover, 9 - handle, 10 - lower frame, 11 - button.

Claims (1)

[Claims] One cylindrical body has a straight through hole parallel to the axis, and the other cylinder has two spiral through holes around the axis over a certain angular range. A cylindrical body of
Constructed as a double cylindrical body inserted into each other,
One roller that simultaneously passes through both through holes of both the cylindrical bodies, and a moving mechanism that moves this roller in the axial direction using a screw feeding method are provided to support one of the cylindrical bodies. and the other cylindrical body is fixed to the table side, and the table side can be tilted with respect to the support side by moving the roller in the axial direction. Operating table.