DE2061662B2 - Ceiling mounted movable support for medical instruments - has parallelogram linkage with power drive for horizontal platform - Google Patents

Abstract

Instruments are clamped in a given positon after adjustment. The support has connections for power and gas supply lines. The instrument platform at the end of support is automatically held in horizontal position. Power drive is provided for height adjustment of the platform together with the supported instruments. The supporting tube (6) is held vertically on the room ceiling. This tube accommodates coaxial rotating inner tube (9). Lower end of inner tube (9) carries a parallelogram linkage (11, 12, 13, 14) whose free end carried an instrument platform 15. A motor (19) driven leadscrew drive moves another inner tube (5) vertically up and down for parallelogram linkage for actuation.

Description

a) An inner tube (9) is mounted coaxially and rotatably about the vertical axis in an outer tube (6) fastened to the corner of the room with a vertical axis _{| ();}

b) at the lower end of the inner tube (9) a _{parallelogram linkage (U, 12, 13, 14) pivotable in the vertical plane in a certain] 5} area is articulated, at its free end a device platform (15) by means of the parallelogram linkage necessarily in the same but opposite dimensions in the vertical _{1 ()} plane is pivotally mounted;

c) a motor spindle drive (1,2,3,5) with an in The coupling element (5), which can be moved in the axial direction, is coaxial with the outer and inner tubes

(6 and 9) arranged; , -

d) at the lower end of the coupling element (5) axially movable by the spindle drive, the drive-side lever arm (11) of the parallelogram linkage (11, 12, 13, 14) is articulated so that the parallelogram linkage _{during an axial advance of the coupling) (J element} is pivoted in the vertical plane.

2. Ceiling stand according to claim 1, characterized in that the parallelogram linkage (II, 12, 13, 14) has two pivot points (a) and '> (b) fixed to the stand, which are formed on an extension (9a) of the inner tube (9) of the stand and has two platform-fixed pivot points (c) and (d) , whereby the spatial direction of the connecting line between the pivot points (c) and (d) remains the same regardless of the pivoting in the vertical plane by the forced guidance by means of the parallelogram linkage, and the platform (15) is remotely steered at the pivot point by means of its lever arm (\ 5a) firmly connected to it at the end of the lever arm (12)

3. Ceiling stand according to one of claims 1 to 2, characterized in that the angle of inclination of the lever (11, 12) is limited on both sides by electrical limit switches for the motor drive. ^w

4. Ceiling stand according to one of claims 1 to 3, characterized in that the pivoting of the Platform (15) can be limited by stops and around the vertical axis of the ceiling mount can be braked by braking. "

5. Ceiling stand according to one of claims 1 to 4, characterized in that the platform (15) has a has a vertical axis of rotation about which a device (16) mounted on the platform can be rotated.

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The present invention relates to a ceiling mount, in particular for holding ^{patient monitoring devices} that can be locked in their position b5 and the connections for energy and gas supply lines in operating rooms.

Ceiling stands are known in which a telescopic rod with counterbalance to the vertical Displaceability of the load is used This training requires a cumbersome, heavy construction because the weights to compensate for the weight of the other required parts of the apparatus add. However, compliance with the desired altitude is by no means guaranteed because a slight push can lead to a change in position.

In addition to ceiling pendants, lifting platforms that have a motor spindle drive are also used in technology to move the lift up and down (DE-GM. 19 73 591). But while the main task of lifting platforms is the lifting of extremely heavy loads, ceiling mounts for patient monitoring systems should be used etc. above all a slight change in the position in the various spatial directions allow not only a change in altitude, but also a movement in the horizontal plane by rotating around a vertical axis. Therefore, these devices differ significantly in the task and the basic construction of lifting platforms, even if some are known per se Construction elements can be used in both cases.

Ceiling stands also differ in essential technical aspects from pendulum-shaped suspension devices, z. B. for endoscopes according to DE-AS 10 26 479.

In another known case (US Patent 34 33 444) is used to hold devices a suspended platform a lever linkage, which in different spatial directions and in a certain Height range is adjustable. However, at least one clamping device must first be released for adjustment and then the desired position of the platform can be held again by clamping. The adjustment in the desired position is therefore cumbersome, and this is not automatically recorded.

With US Patent 34 36 046 a platform construction for dental devices has been proposed that a Movement both in the horizontal and in the vertical plane through direct manual operation is allowed but the position of the platform is held by a friction lock, which is also done by hand must be resolved in order to change the situation again. A similar, technically not advanced and with The present invention far outdated construction was also the subject of US Pat. No. 5,10,147.

Finally, motor spindle drives are known in the art (DE-AS 12 53 804) to provide an axial To enable adjustment of the construction elements connected to the spindle (shaft). For height adjustment However, such motor spindle drives have not yet been used on the platform of ceiling pendants been.

The present invention was based on the object of this prior art for To significantly develop the adjustability of device platforms. Above all, it should be a device platform for patient monitoring devices in operating theaters that can easily be converted into a cheap, den The surgeon and the medical support staff were brought to a non-disruptive spatial position and held there can be. It should also meet the requirement that automatically when an adjustment the horizontal position of the device platform is preserved. In addition, there was still the requirement that the

The height adjustment of the platform with the devices on it does not have to be carried out by hand.

Ultimately, a construction that is as light as possible in terms of size and weight should be sought. In particular, the installation of patient monitoring systems in operating theaters also required a quick and easy operability with regard to the adjustability of the spatial position.

These tasks are made more favorable and by a ceiling mount with the features according to claim 1 advantageously met

With the ceiling mount according to the invention, the devices can thus within certain sufficient limits both in terms of altitude and in a horizontal plane, the latter by pivoting the Parallelogram linkage around the vertical axis of the outer tube can be adjusted. In addition even occurs a certain radial adjustability with respect to this axis, however, with the angle of inclination of the parallelogram linkage is coupled to the horizontal according to the cosine function

Advantageous further developments of the invention are given in the subclaims.

The construction principle is described using an embodiment that is shown schematically in section in the drawing is shown

The ceiling mount is to achieve ground clearance for the devices to be set up - like the name says - on the ceiling of the installation room, e.g. B. directly on the shell ceiling 8 by means of a Frame 18 mounted. An electric motor 1, which is used to drive the spindle 2 for the height adjustment of the Device platform 15 is used is built into the frame 18. The motor shaft is via a universal joint 19 with the vertically arranged spindle 2, when rotated a nut 3 screwed onto it. or move away Since this has a coupling element, for. B. in the form of a tube 5 with the one in the camp 10 articulated two-armed lever It, 12 is connected, which carries the device platform 15, the vertical Movement of the coupling tube 5 onto the lever 11, 12 which is rotatable in the pivot point a fixed to the tripod transmitted, so that when the coupling tube 5 moves upwards, the platform 15 moves downwards and vice versa.

The other support parts of the ceiling mount consist of a rigid outer tube 6, which is attached to the frame 18 and in its interior receives both the spindle drive 1, 2, 3, 5 and an inner tube (9) rotatably mounted in it, which with an extension 9a the bearing in the pivot point A of the lever 11, 12 and the bearing in the pivot point b of the drawbar 14 of the parallelogram linkage 12, 14, 15a carries two pivot points A and B are thus in relation to the height position firmly in the tubular extension 9a arranged the inner tube 9 is Rotatable about the vertical axis via two roller bearings 4 in the fixed outer tube 6 of the stand. This rotary movement can be limited by stops and braked by means of adjustable brakes. An intermediate ceiling 7 can be used to cover the frame 18 and to reduce noise

ι ο serve the engine 1.

The lever arm 11, 12 is pivoted by the motor spindle drive while the height of the pivot point a remains unchanged, so that the platform 15 moves up and down. soft both are articulated to the pivot points a, b , which are fixed to the tripod except for the possibility of rotation around the vertical axis of the pipe 6, and on the other hand are formed by a lever arm 15a connected to the platform 15 and the fixed connection zone of the pipe extension 9a located between the pivot points a and b .

The lever arm 15a is at the end of the lever arm 12 in

Pivot point c is articulated and carries the bearing for pivot point d, which is used to articulate the pull lever 14. The parallelogram arm, which is formed by the connecting piece between the pivot points c and d, corresponds on the opposite side to the parallelogram arm,

jo which is formed by the connection zone of the pivot points a, b on the tubular extension 9a. Since this latter parallelogram arm maintains its direction in space regardless of the inclination of the lever 12, the direction between the two pivot points c and d also remains

π inevitably unchanged when the lever II, 12 is inclined The platform 15 thus maintains its horizontal direction regardless of the inclination of the lever 11, 12 which is important for both the stability and the controllability of the patient's

Monitoring devices 16 is very essential.

The angle of inclination of the lever arm 11, 12 for the platform 15 can be adjusted by electrical limit switches be limited by actuating a safety relay that provides power to the motor interrupt. The set altitude could then only be changed if the motor was also turning becomes, which is made more difficult and slowed down by a correspondingly high gear ratio. The platform 15 has another vertical axis of rotation for the actual

so device pad to the device 16 in the appropriate To be able to rotate the viewing direction.

1 sheet of drawings

Claims (1)

Patent claims: 1. Ceiling support, in particular for the mounting of lockable in their position Patientenüberwa- '-> monitoring devices and the terminals of the energy and gas supply lines, characterized by the combination of the following features: