JPS6035768Y2 - Fixation device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a fixing device that is useful for fixing various instruments to the side of a medical operating table, for example.

When an accessory (instrument) is to be fixed to a surgical operating table, an instrument (accessory) 3 is attached to the bed 1 as shown in FIG.

That is, the instrument 3 is an auxiliary tool during surgery, and is firmly attached to a fixing frame (guide rail) 2 provided on the side of the bed 1 and having a relatively long rectangular cross section by a fixing device LD.

First, a conventional fixing device LD will be explained with reference to FIG.

The engagement frame 4 has a rectangular inner edge larger than the cross section of the fixed frame 2,
In addition, a part of the inner edge on the long side of the fixed frame 2 is cut out to a length ■ shorter than the long side length L of the fixed frame 2, and this length ■
In combination with the size of the inner edge of the rectangle, the engaging body 4 can be attached and detached at an intermediate position of the guide 2.

That is, by tightening the handle 5, the corner of the fixed frame 2 is pushed diagonally, and a.

It has a structure in which the engagement frame 4 is fixed to the fixed frame 2 at four points b, c, and d.

However, this structure requires a considerable amount of movement to engage the engaging body with the fixing frame, making it difficult to operate, and has drawbacks such as damage to the fixing device due to incorrect attachment.

In addition to this, insert from the end of the guide rail (fixed frame),
There is also a device that allows you to slide the device to the desired position, but it takes time to operate, and both have drawbacks such as the risk of the handle falling off.

This invention aims to provide a fixing device that solves these conventional drawbacks, and one embodiment of the fixing device of this invention will be described below with reference to the drawings.

Figure 3 is a cross-sectional view of the main parts of the fixing device according to this invention, Figure 4 is a diagram showing the fixing device fixed to the fixing frame, and Figure 5 is a partial cross-sectional view of the fixing device according to this invention. FIG.

In the figure, reference numeral 4 denotes an engagement frame, which includes a hook portion 4' forming a slope e at the upper end, and an end 6'' when the engagement arm 6 advances.
A stopper portion 4'' is formed to stop the advance of the holder.

Reference numeral 7 denotes a fixed shaft (fixed part) that is integrally held at the lower end of the engagement frame 4 by a presser metal fitting 8.

9 is a threaded rod, with a right-hand threaded shaft 9' and a left-hand threaded shaft 9'' at its tip.
The right-hand threaded shaft 9' is screwed onto the fixed shaft 7, and the tip of the left-hand threaded shaft 9'' is fitted into the hole 10 of the engagement frame 4 so as to be vertically movable.

11 is a support shaft screwed onto the left-hand threaded shaft 9' of the threaded rod 9;
Reference numeral 6 denotes a retaining arm that is swingably supported on this support shaft 11 and has a hook portion 6' formed at one end corresponding to the hook portion 4' of the engagement frame 4; 12 is attached to the threaded rod 9; It is a held handle.

Although FIG. 5 shows a cross section of the right half of the device, the left half is symmetrically the same.

When the fixing device LD is inserted into the fixing frame 2 in the above configuration, the fixing device LD is inserted right sideways from the side of the fixing frame 2, and the hook portion slope e of the engagement frame 4 is inserted into one side of the fixing frame 2. When the handle 12 is turned in the direction in which the right-hand screw 9' advances, the screw rod 9 advances upward (towards the hook 4') according to the principle of left-right screws, and first the end 6'' of the engagement arm 6 is turned. The upper surface comes into contact with the stopper part 4'' of the engagement frame 4, and thereby the engagement arm 6 is swung counterclockwise about the support shaft 11, and then the slope f of the hook portion 6' is brought into contact with the engagement frame 4. Abuts on the other corner of 4.

By further turning the handle 12, the fixing frame 2 and the engaging frame 4 are firmly tightened and fixed together at two points, the inner surface g of the engaging frame and each of the slopes e and f, as shown in FIG.

The greatest feature of this invention is that the engagement arm 6 swings in this manner to facilitate attachment and detachment to the fixed frame 2.

Further, when removing the fixing device LD from the fixing frame 2, the above operation can be performed in reverse.

Furthermore, even if the handle 12 is turned in the direction in which the right-hand screw is loosened, the engagement arm 6 hits the stopper 6'' of the engagement frame 4 and the fixed shaft 7, and will not go down any further, as shown in FIG. , the handle 12 is configured so that it cannot rotate and does not fall off.

In this embodiment, the screw shafts 9' and 9'' of the screw rods have a left-hand screw shaft 9'' combined with the tip of the right-hand screw 9', but it is also possible to have the opposite configuration.

Further, the structure of the engagement frame, particularly the shape of the stopper and hook, is not limited to the illustrated example, and the stopper may be a separate member.

The fixed shaft may also be formed integrally with the engagement frame.

Since this invention has been described in detail above, it is very easy to attach the engaging frame to the fixing frame, and especially when it is installed on an operating table, it allows nurses and others to fix instruments, and it also makes it possible to do it firmly. This is extremely beneficial.

Furthermore, the fixing device is extremely effective in preventing damage to the fixing frame and preventing the handle from falling off.

[Brief explanation of the drawing]

Figure 1 is a diagram of how the fixation device is used on an operating table, Figure 2 is a sectional view of a conventional fixation device, Figure 3 is a sectional view of the main parts of the fixation device of this invention, and Figure 4 is the fixation device. FIG. 5 is a partially sectional side view of the fixing device according to this invention. 1...Bed, 2...Fixed frame (guide rail), 3...Accessories, 4...
Engagement frame, 6... Engagement arm, 7... Fixed shaft, 9... Screw rod, 11... Support shaft,
12... Handle.

Claims (1)

[Scope of utility model registration request] In a device for fixing instruments etc. to a fixing frame having a rectangular cross section,
An engaging frame has a hook portion formed at one end to be locked to the fixed frame, and the engaging frame is screwed to a fixed portion that is integrated with the engaging frame, and the tip thereof is rotated toward the hook portion side of the engaging frame. A screw rod that moves forward and backward, a support shaft screwed to the tip side of the screw rod that passes through the fixed part of the engagement frame, and the engagement frame is swingably supported by the support shaft and has one end attached to the engagement frame. an engaging arm having a hook portion that is locked to the fixed frame in correspondence with the hook portion of the engaging arm; and an engaging arm that is provided integrally with the engaging frame and stops the other end when the engaging arm is displaced by advancement of the screw rod. The hook part of the retaining arm swings to grip the fixed frame, and the threaded rod includes a screw threaded into the fixed part of the engagement frame and a screw threaded into the support shaft. is configured with a reverse thread, and the hook part of the retaining frame is locked to the fixed frame placed inside the hook part of the engaging frame.It is possible to attach and detach instruments attached to the engaging frame to the fixed frame. A fixing device characterized in that it can be fixed.