JPH0336340Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to an arm holder for a medical table, and is particularly suitable for use in an arm holder that can adjust the angle at which the arm is placed and the angle of inclination with respect to the horizontal direction. It is something.

[Summary of the idea]

This invention attaches means for adjusting the rotation of the arm receiving plate in the horizontal plane and means for adjusting the rotation in the vertical plane in the longitudinal direction of the arm receiving plate, and also uses one clamp lever. By operating the plurality of rotation adjustment means and fixing the arm support plate at the adjustment position, the arm support plate can be fixed simply and easily, and the arm support plate can be fixed easily. This is to prevent the inconvenience of unexpectedly moving from the adjusted position during the fixing operation.

[Conventional technology]

On both left and right sides of a medical table, such as a delivery table or a medical examination table, arm rests are provided for placing the arms of a person on the medical table. This arm holder has an arm holder plate on which the arm is placed, and its rotation can be freely adjusted through various rotation mechanisms.

For example, in Japanese Utility Model Publication No. 61-38579, as shown in FIG. A three-dimensional rotation adjustment mechanism that can rotate in three mutually orthogonal directions indicated by arrows B, C, and D is supported by the cylindrical rod F, and an arm support is attached to this three-dimensional rotation adjustment mechanism. Plate E is attached.

[The problem that the idea aims to solve]

By the way, the user of the arm holder places his arm on the arm holder and adjusts the amount of rotation in the directions of arrows B and C.
After that, in order to fix this arm receiving plate, the rotating knob G and lever rod H shown in the figure must be rotated separately to fix the arm receiving plate. Since the fixing means is cumbersome, problems such as unexpected rotation of the arm receiving plate after adjustment are likely to occur.

In view of the above-mentioned points, the present invention provides an arm support plate for a medical table that allows the arm support plate to be immediately fixed by simply rotating one lever by a predetermined angle.

[Means for solving problems]

The present invention includes an arm support plate, a support shaft that is erected on the back surface of the arm support plate and extends in a direction substantially perpendicular to the arm support surface of the arm support plate, and a first support shaft that rotatably supports the support shaft. a second support member that rotatably supports the first support member about an axis extending substantially along the width direction of the arm receiving surface; a first brake means for detachably coupling the support shaft; a second brake means for detachably coupling the first support member to the second support member; and a clamp lever that commonly operates a second brake means, and when the clamp lever is rotated forward, the first brake means is operated and the support shaft is moved to the first support member. At the same time, the second braking means operates to brake the first brake.
The arm holder for a medical table was constructed such that the supporting member was coupled to the second supporting member.

〔Example〕

FIG. 1 is a perspective view of an arm holder for a medical table seen from below, showing an embodiment of the present invention.

This arm holder is placed on the side 1 of the medical table 1 (see Figure 3).
It is attached to a slider 2 that is slidably fitted into a rail 8 provided along a. A tightening screw 2b whose tip extends into the rail 8 is attached to the slider 2, so that it can be locked at a desired position. An arm support plate 3 on which arms 9a, 9b of a person 9 on a medical table are placed is formed into an elongated shape, and is formed by providing a mat 5 of urethane foam on the upper surface of an arm support plate frame 4 made of metal.

A first rotation shaft 6 for adjusting the opening degree of the arm receiving plate 3 is vertically protruded from the lower surface near one end of the arm receiving plate frame 4 . This first rotating shaft 6 is held in the inner part of a bifurcated portion of a U-shaped block body 7, which is a first support member, and when the bifurcated portion is unfastened, it is indicated by an arrow 10 in FIG. It can be rotated as shown. Therefore, when the tightening is released, the arm support plate 3 can be rotated around the first rotation axis 6 as shown by the arrow 11 in FIG. 9
The angle at which a and 9b are widened can be freely adjusted in a stepless manner.

Insertion holes 13 and 14 are formed at the ends of the bifurcated portions 7a and 7b of the U-shaped block body 7, and the second rotating shaft 12 is inserted into these insertion holes 13 and 14 to remove the U-shaped block. The body 7 is rotatably supported. In this embodiment, the second rotating shaft 1
2 shows an example in which a clutch shaft 15a and a clamp shaft 15b are connected on the same axis.

The clutch shaft 15a is mounted in a direction perpendicular to the side surface 2a of the slider 2,
A circular groove 17 is formed at the tip, and a flange 18 is formed on the circumferential surface near the tip. The clamp shaft 15 is placed in the groove 17.
Insert one end of b into these shafts 1.
5 and 16 are connected in a straight line,
Clutch shaft 15b
It is designed so that it can be rotated with respect to a. That is, a large diameter portion 20 is formed at one end of the clamp shaft 15b, and a cylindrical screw 21 for preventing the large diameter portion 20 from coming off is screwed into the groove 17 to connect the clamp shaft 15b to the clutch shaft 15a. It is rotatably connected to the clutch shaft 15a and is prevented from falling off from the clutch shaft 15a.

An insertion hole 13 formed in the bifurcated portion 7a of the U-shaped block body 7 is formed to have a large diameter, and a clutch shaft 15a on the distal side of the flange 18 is inserted through the insertion hole 13. Further, the insertion hole 14 formed in the bifurcated portion 7b is formed as a different diameter insertion hole having a large diameter portion 14a and a small diameter portion 14b. The clamp shaft 15b is inserted into the insertion hole 14, and the diameter of the small diameter portion 14b is formed to match the diameter of the clamp shaft 15b, and the clamp shaft 15b is rotatably supported by the small diameter portion 14b.

Since the U-shaped block body 7 is rotatably attached to the second rotation shaft 12 in this manner, the inclination angle with respect to the horizontal direction can be adjusted as shown by the arrow 38 in FIG. Therefore, even when the back plate 1b of the medical table is undulated as shown by the arrow 40, the arm receiving plate 3 can be adjusted to be horizontal.

A coil spring 22 is disposed in the large diameter portion 14a, and this coil spring 22 is connected to the second coil spring 22.
As shown by an arrow 24 in the figure, the bifurcated portions 7a, 7b are biased in a direction to be separated from the collar portion 18.

A clamp lever 23 is attached to the other end of the clamp shaft 15b via a shaft pin 25. The end of the clamp lever 23 has an end surface 23a orthogonal to the axial direction of the clamp lever 23.
and a pressing surface 23b parallel to the axial direction of the clamp lever 23. The distance between the end surface 23a and the shaft pin 25 is formed short, so that when the clamp lever 23 is raised to be parallel to the second rotating shaft 12, the bifurcated portions 7a and 7b are not pressed against the collar portion 18 side. .

Further, the distance between the pressing surface 23b and the shaft pin 25 is formed long, so that when the clamp lever 23 is tilted down as shown in FIG. It is designed so that it can be strongly pressed against the flange 18 side.

Clutch teeth 26 are formed radially around the second rotating shaft 12 on the surfaces of the flange 18 and the bifurcated portion 7a facing each other, and when the clamp lever 23 is pushed down, the bifurcated portion 7a is moved to the flange 18. When pressed to the side, these clutch teeth 26 engage and the U-shaped block body 7 is fixed to the second rotating shaft 12. Therefore, the adjustment pitch of the inclination angle with respect to the horizontal direction is determined by the formation pitch of the clutch teeth 26, and can be adjusted, for example, in increments of 10 degrees.

Furthermore, when the clamp lever 23 is folded down in this way, the bifurcated parts 7a and 7b are tightened so that they come into close contact with each other, so that the first rotation shaft 6 cannot rotate relative to the U-shaped block body 7, and the arm Receiving plate 3
is locked at the set opening.

In this embodiment, a stopper 30 is provided on the flange 18, and a stopper 31 that abuts against the stopper 30 is provided on the bifurcated portion 7a. The numbers 30 and 31 are set so that you can win.

The clutch shaft 15a is supported by a second support member 16. This second support member 16
is provided with a shaft portion 16a extending in the same direction as the second rotation shaft 12, and this shaft portion 16a is attached to the support mechanism 19 so as to be perpendicular to the first and second rotation shafts 6, 12. It is rotatably supported around a third rotation axis.

In this embodiment, an example is shown in which the second support member 16 and the shaft portion 16a are provided on the same axis of the clutch shaft 15a. That is, although the clutch shaft 15a, the second support member 16, and the shaft portion 16a are integrally formed on the same axis, these do not necessarily have to be provided on the same axis as the clutch shaft 15a.

The support mechanism 19 includes a side surface 2a of the slider 2.
A mounting rod 33 having the same diameter as the clutch shaft 15a is protruded from the top, and the mounting rod 33 and the shaft portion 16a are connected to each other.
The distal end portion is rotatably connected via a pivot pin 35. That is, as shown in FIG. 5, an engagement piece 34 is provided at the center of the end face of the mounting rod 33 with its engagement surface facing vertically.

Further, the engagement piece 34 is provided at the tip of the shaft portion 16a.
An engagement groove 32 into which the connecting pin 3, which is the third rotating shaft, is rotatably inserted is provided.
5, these are rotatably connected. Therefore, the shaft portion 16a can be tilted downward from its tip.

A cylindrical lock collar 36 is provided on the shaft of the shaft portion 16a.
is fitted onto the outside so as to be movable along the axial direction. A collar 36a provided around this lock collar 36
A pressing spring 37 is disposed between the flange 18 and the lock collar 36, and the lock collar 36 is always pressed against the slider 2.
Pressure is applied to the side. When the lock collar 36 is pressed against the slider 2 by the pressing spring 37, the engagement portion between the attachment rod 33 and the shaft portion 16a is completely covered by the lock collar 36. Therefore, the shaft portion 16a cannot fall down, and the second rotation shaft 12 is locked in the direction perpendicular to the side surface 1a of the medical table, so that the usage mode is maintained.

By moving the locking collar 36 in the direction away from the slider 2 as shown by the arrow 41 in FIG. 2, the engaging portion can be exposed, and as shown in FIG. be able to.

Therefore, the first and second rotation shafts 6, 12, the first and second support members 7, 16, etc. can be tilted downward together with the arm support plate 3, so that when getting on and off the medical table 1, these does not get in the way.

Note that even in this state, the lock collar 36 is biased toward the distal end of the shaft portion 16a, so if you raise the arm holder and align the axis of the shaft portion 16a with the axis of the mounting rod 33, the lock collar 36 will be automatically moved. can be moved to the lock position. Therefore, it can be easily returned from an unused state to a used state.

In the above embodiment, the rotation support mechanism that adjusts the angle at which the arms 9a and 9b are spread and the rotation support mechanism that adjusts the inclination angle with respect to the horizontal direction can be simultaneously locked and unlocked by operating one clamp lever 23. Therefore, the operation when adjusting the angle is easy.

In addition, since the clamp shaft 15b is rotatably supported on the clutch shaft 15a, the clamp lever 23 can be rotated in the direction around the axis of the clamp shaft 15b, and can be operated at any position according to the mounting angle of the arm receiving plate 3. It can be carried out.

[Effect of idea]

Since the present invention has the above-described configuration, the arm support plate can be fixed by operating one clamp lever. Therefore, after the rotation of the arm support plate has been adjusted according to the condition of the user's arm, there is the problem that the arm support plate may unexpectedly move from the adjusted position during the fixing operation of the arm support plate. can be prevented. Furthermore, the operation of fixing the arm support plate is much easier than in the past.

[Brief explanation of the drawing]

Fig. 1 is a perspective view from below of an arm holder for a medical table showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the second rotation axis, and Fig. 3 is a perspective view showing the state of use. figure,
Figure 4 is a side view to explain how to perform horizontal adjustment, Figure 5 is a perspective view showing the state in which it is tilted downward, and Figure 6 is a perspective view showing the state in which it is attached to a medical table and tilted downward. 7 are perspective views showing an example of a conventional arm holder. In addition, in the symbols used in the drawings, 3... arm holder, 6... first rotation shaft (support shaft), 7... first
supporting member, 12... second rotating shaft (second supporting member), 15b... clamp shaft (first braking means), 16... second supporting member, 23...
... Clamp lever, 26 ... Clutch teeth (second brake means), 37 ... Pressing spring (first
braking means).

Claims (1)

[Scope of Claim for Utility Model Registration] An arm support plate; a support shaft that is erected on the back side of the arm support plate and extends in a direction substantially perpendicular to the arm support surface of the arm support plate; and a support shaft that is rotatable. a first support member that supports the first support member; a second support member that rotatably supports the first support member about an axis extending substantially along the width direction of the arm receiving surface; a first brake means for removably coupling the support shaft to the second support member; a second brake means for releasably coupling the first support member to the second support member; and a clamp lever for commonly operating the first and second brake means, and when the clamp lever is rotated forward, the first brake means operates and the support shaft is moved to the first position. An arm holder for a medical table, which is coupled to a support member and configured such that the second brake means is operated to couple the first support member to the second support member.