WO2018206699A1

WO2018206699A1 - Arm relief and supporting device

Info

Publication number: WO2018206699A1
Application number: PCT/EP2018/062104
Authority: WO
Inventors: Gefa NAEGLER
Original assignee: Naegler Gefa
Priority date: 2017-05-10
Filing date: 2018-05-09
Publication date: 2018-11-15
Also published as: DE102017110147A1

Abstract

The invention relates to an arm relief device, in particular for preventing the development or for the regression of so-called mouse arm when using a computer mouse, comprising a support device (1) which is suitable for supporting an elbow or forearm, and a carrier device (2) which is configured for carrying the support device (1), wherein the support device (1) can be moved by means of the carrier device (2) in a plane in a guided manner, and wherein the carrier device (2) is configured such that, when a force (F) is applied to the support device (1) perpendicular to the plane, the carrier device generates a counter force counteracting the force (F) according to a movement path caused by the force (F). The result is in particular that, when using the mouse, the user must exert the force (F), which can counteract a development of mouse arm syndrome.

Description

Arm relief and support device

The invention relates to an arm relief device, the relief or

Support of an arm during sitting activities, in particular typing on a keyboard and / or operating a computer mouse, at the desk or

Computer workstation is suitable. In particular, the invention relates to a

Arm relief device for preventing development or manifestation of pathological symptoms associated with frequent use of a computer mouse (so-called "mouse arm") and for treating such symptoms.

Regular long-term work with a computer mouse can lead to pathological developments in the musculoskeletal system of a human, especially along the arm, with which the mouse is operated. This so-called "mouse arm", the

Tennis elbow comparable makes about 6 to 8% of people working on the computer light to quality of life limiting complaints.

It has long been unclear how a relatively small movement, such as the movements of the fingers on the keyboard, but especially the movement of the fingers on the mouse, can cause such a complaint. The movement to use the keyboard or the mouse, however, not only includes these small finger movements, but also represents a "chain of movement": muscles or muscle groups located at the skull base, the shoulder, the arm down to the hand and finally the fingers, are involved in every little finger movement - even if in the end alone a single finger, such as the index finger moves.

The generated on the cerebral cortex or running as an automatism

Movement intentions (or neural signals), always run over such

Movement chains to the respective muscles of the movement chain, that is the

Motor neurons, which enervate the respective muscles, are at least partially excited even if only part of the movement chain is moved. For example, if someone raises their index finger to "click" the mouse, all of the muscles associated with the movement chain (described above) will increase their excitement.

The actual "click" on the mouse is done by bending the index finger

Expectation of the action but the index finger (unconsciously) before the mouse click in one The "increased wait" in the musculature associated with the movement chain provides a preloading of the corresponding muscles, with some of the involved muscles in the process already reach 20 to 30% of their maximum stress, although no movement has taken place at this time.

The entire muscle chain responsible for the movement when performing a "mouse click" follows in the power transmission, from distal to proximal:

Finger, forearm stretcher: Mm. extensor pollicis brevis et longus, abductor pollicis longus, Mm. extensores carpi radialis longus et brevis, Mm. Extensor digitorum, extensor indicis (finger for mouse click), extensor digiti minimi, extensor carpi ulnaris (the individual muscles of the forearm extension muscle group have a functionally similar pull vector and are considered to be fascial as a unit), septum Intermusculare lateral (fascial pull between M. triceps and biceps located) as connection of the forearm stretchers over the deltoid Tuberculum to the deltoid muscle, Trapezius over the Lig. nuchae to the occiput edge (occiput). (Anatomy Trains-Myofascial Meridians for Manual and Movement Therapists, Thomas Myers, Elsevier GmbH, Urban and Fischer Verlag, Hackerbrücke 6, 80335 Munich, 3rd edition 2014, ISBN 978-0-7020-4654-4).

The descending part of the trapezius muscle is part of the movement chain that lifts the index finger (extension chain). If a person holds his index finger in a "waiting limbo" over the mouse over a long period of time, for example for hours, (interrupted only by short "clicks"), the pars descendens of his trapezius muscle is also under tension and inhibited by the permanent nervous

Activation in anticipation of a "click" movement, the ascendants of the

Trapezius. This results in a muscular dysbalance, which, if not broken, can also lead to a "neurological dysbalance": the more dominant the upper part of the trapezius muscle becomes, the more inhibited the lower part becomes, which is one of the causes of the "mouse arm ".

Another cause of the mouse arm is the increase of the muscular

Excitement by stress hormones - in this case, this tension is sufficient to squeeze the blood vessels and thus massively reduce the metabolism in the muscle. A so-called "lack of oxygen deficiency", in the muscle itself and / or as a headache, may be the result. Furthermore, the mouse arm syndrome can have an exacerbating effect on the body's ability to convert phasic (fast) muscle fibers into tonic muscle fibers (retaining muscles). Thus, if more "holding work" is required at any point in the musculature, there may be a conditional "adaptation" of the ratio of phasic and tonic fibers. This can lead to a worsening of the pathology of the mouse arm.

Conventional armrests known in the art absorb the dead weight of the user / patient's arm. This can be done in a certain way

The amount of "holding power" is reduced, that is, the upward force that the user must apply to hold his or her arm while guiding the mouse.

However, such armrests have no effect on the expression of the phenomenon described above as mouse arm syndrome.

Therefore, it is the object of the present invention, an armrest or

Armentbelastvorrichtung to provide, which is suitable, the

Prevent or counteract mouse arm syndrome.

This object is achieved by the arm relief device according to claim 1. Advantageous embodiments of the invention are the subject of the dependent claims 2 to 10 and are described below.

A first aspect of the invention relates to an arm relief device, in particular for the prevention of the expression or for the regression of a so-called mouse arm when working with a computer mouse. In this case, the

Armentlastungsvorrichtung a support device for laying a

Elbow or forearm is suitable, and a support means which is designed to support the support means.

The support device is in particular set up for placing an elbow or forearm of a person standing on a table or sitting, in particular sitting, user when the Armentlastungsvorrichtung is fixed to the table.

Furthermore, the carrier device is particularly adapted to the

Place support device above a horizontal plane, wherein the horizontal plane z. B. along the surface of a table top of the table.

According to the invention it is provided that the support means by means of

Carrier device in a plane, especially in a fixed space area, out is displaceable, wherein the support means is adapted to generate upon application of force to the support means perpendicular to the plane in response to a force caused by the movement path of a force counteracting the opposing force. That is, the direction of the opposing force is opposite to the direction of the force. The amount of drag is dependent on the path of movement. In this case, the term movement path is to be understood as the path that the support device travels under the action of the force perpendicular to the plane. The support device moves in particular to the table top. In particular, the amount of generated

The larger the distance traveled, the greater the drag

Support device is. For example, the amount of drag may be proportional to the amount of travel traveled. A dependence of the opposing force of

Movement path can e.g. be given by the fact that the counterforce means

at least one spring is generated.

The said displacement of the support device along the plane takes place in

Essentially free, that is without a substantial drag of the

Counteracts displacement movement.

The plane in particular runs horizontally, but can also be inclined. In particular, the plane runs along the surface of a table top of a desk on which the user sits or stands, in particular sits. In this case, the support device is arranged in particular displaceable on the table top or anordbar.

That is to say that the supporting device is stressed by the weight force of the body, in particular when loaded by a body resting on the support (for example an arm of the user), that is to say when said force acting perpendicularly to the plane

resting body comes about, by means of the carrier device in one

Balance position is positioned above the tabletop. In the equilibrium position, the force and the counterforce equalize so that there is no resultant force and the support means is thus not accelerated, in particular stationary.

Upon further loading by the resting on the support body, so if the force increases beyond the amount of weight addition, the support device can move away from the equilibrium position or be deflected, in particular on the table top, wherein the body through the

Support device one of the respective movement path from the

Equilibrium position-dependent, upwardly directed counterforce acts. The arm relief device can be designed such that the said counterforce can be adjusted with it. The counterforce can be made available, for example, by at least one spring. The counterforce is in particular 1 N to 100 N, preferably 2 N to 50 N, more preferably 5 N to 15 N, even more preferably 8 N to 12 N, most preferably 10 N, when the support device is deflected downwards and the support means the first level, in particular the table top, touched.

The arm relief device according to the invention has the advantage that the user, in particular when using the computer mouse or keyboard his active resting on the support elbow or forearm must press down to counteract the opposing force. Thus it activates the ascending part of the trapezius muscle, which in turn inhibits the descending descendens according to the reciprocal inhibition. In particular, in the complaint-causing part of the agonist

Movement chain (the Pars descendens) will thus increase the

Prevented excitement during the entire duration of work with the mouse. The cause of the "mouse arm" is thus reduced or switched off.

The term "reciprocal inhibition" (also referred to as mutual inhibition) describes the inhibition of neuronal activity (that is, excitation of motor neurons) of an agonistic motor chain by an antagonistic

Movement chain or muscle group.

The term "agonist motion chain" refers to a group of muscles that can perform or perform a particular first movement (such as a forearm flexion) in the human body, where the individual muscles of the agonistic chain of motion are also referred to as agonists.

In contrast, the term "antagonistic chain of motion" describes a group of muscles that can perform or perform a second movement (e.g., stretching the forearm) opposite the first movement, becomes nervous, inter alia, defined by the law of "reciprocal inhibition" (mutual inhibition).

When lifting the index finger, e.g. Expecting a click of the mouse, the extensor indicis muscle assumes the role of the agonist. All the muscles of the chain of motion, whose excitement is thereby increased, then form the "agonistic

Chain of Movement. "This" agonistic movement chain "also includes the descendants of the trapezius muscle. The antagonist of the musculus Trapezius pars descendens is the musculus Trapezius pars ascendens. The effect of Arentlastungsvorrichtung invention on the said antagonistic muscle strand and thus inhibition of the agonistic muscle strand is advantageously particularly pronounced when the user, especially while working with the computer mouse, the posture of a person sitting at the desk occupies.

According to a further embodiment, the support device is a first

Fulcrum pivotally extending perpendicular to the plane, wherein the support means is displaceable under load by the force perpendicular to the plane.

In this case, the rotation takes place about the first axis of rotation, in particular in a plane which is parallel to a table top, to which the Armentlastungsvorrichtung is attached when the user sits or stands at a desk and rests on the elbow or forearm of the user on the support means of Armentlastungsvorrichtung. This plane is preferably horizontal. In particular, the

Shifting in a semi-circular area in front of an edge of the table top, wherein the user sits or stands on said edge. The radius of the

semicircular area can, for. B. between 25 cm and 75 cm, preferably between 40 cm and 60 cm, more preferably 50 cm.

The said displacement is perpendicular to the plane, in particular vertically between a first plane and a second plane, wherein the first and the second plane respectively parallel to said plane (and parallel to each other) and preferably extend horizontally. In particular, the first and second planes are each parallel to the desk top of the desk.

The first level can be arranged above the table top, wherein the vertical distance of the first level to the surface of the table top is preferably less than 5 cm, more preferably less than 2 cm. Alternatively, the first plane may be formed by the surface of the table top, i. have no distance to the table top.

The second level is arranged during normal operation of the Armentlastungsvorrichtung particular above the first level. In this case, the distance of the second plane to the first plane according to one embodiment is 6 cm to 15 cm, in particular 8 cm to 12 cm.

Furthermore, the support device according to the invention may comprise a support buffer, which is made in particular of sponge rubber or viscoelastic foam. The support buffer can z. B. releasably connected to the support device. Furthermore, the support buffer, a fastening means, such as a loop, for

Attach the forearm or elbow to the support buffer.

The support buffer furthermore has, in particular, a contact surface directed upwards during normal operation of the arm relief device.

In this case, the support surface is configured so that loading force can be transmitted to the support buffer by a resting on the support surface elbow or forearm by the contact with the support surface.

The support surface has in particular a profile, a roughening, a non-slip coating and / or a concave, for example cup-shaped or

trough-shaped curvature, wherein preferably the curvature is ergonomically adapted to suitable areas of an elbow or forearm.

The support buffer may be rotatable about an axis extending perpendicular to the plane, in particular a vertical axis, this axis preferably being the first axis of rotation.

During the displacement, there is preferably no significant rotation of the support surface with respect to the table top. This can e.g. be achieved by the

Support surface at the said pivoting movement in the plane around the

Support device and / or the support device rotates, so that the support surface itself is moved in relation to the table top substantially only translational. As a result, the resting on the Armentlastungvorrichtung arm by the pivoting of the Armentlastungsvorrichtung is not unnatural

Rotary movement exposed, but can be freely translational move.

According to another embodiment, the connection between

Support means and support means a guide device. The

Guide device is connected to the support means and the support means

mechanically connected, wherein it is adapted to guide the support means in its movement perpendicular to the plane.

The guide device can thereby allow a rotation about an axis which is perpendicular to the plane, this axis preferably being the first axis of rotation.

The guide device can both the support device and the

Be rotatable support means, preferably the mechanical connection of the guide means with the support means and the support means while rotatably realized with one of the two components, in particular rotationally fixed with the

Support device implemented. It is the Armentlastungsvornchtung invention preferably realized such that the support means and support means are pivotally connected about the first axis of rotation, wherein the support means and the support means are thus pivotable about the first axis of rotation to each other.

The articulated connection is essentially realized by a support joint, which is preferably encompassed by the support means and which makes a rotation about the first axis of rotation feasible. The articulated connection can also be realized by the guide device itself.

A further embodiment of the invention provides that the arm relief device further comprises a fastening device, wherein the fastening device is connected to the carrier device and wherein the fastening device for attaching the Armentlastungsvorrichtung to an object, in particular a desk or chair, preferably for attachment to the table top of the desk , or an armrest or seat of the chair, is suitable. That is, the

Fastening means is arranged for fixing the armrest device in a fixed position relative to the plane in which the support means

is pivotable.

In an embodiment according to the invention, the armrest device also provides that the fastening device is connected to the carrier device by a

Fastening axis of rotation is hingedly connected, wherein the mounting axis of rotation is substantially perpendicular to the plane in which the support means is guided guided by means of the support means, so that the components

Fastener and support means are pivotally to each other.

The articulated connection is realized by a fastening joint, which may be comprised by the fastening device and / or the carrier device and which makes possible a rotation about the fastening axis of rotation, which runs substantially parallel to the first axis of rotation.

The mounting joint serves to pivot the entire support means and the support means in a plane substantially parallel to the table top.

The support device may further comprise a support support having a distal and a proximal end, wherein the support support is connected with its distal end by means of a first connection with the support means, as well as a

Mounting bracket with a proximal and a distal end, wherein the Mounting bracket is mechanically connected to its proximal end by means of a second connection with the fastening device.

Distally refers to the direction away from the body and proximally facing the body direction.

Depending on the arrangement direction of the arm disinfestation device, it is not absolutely necessary for the proximal end to be closer to the user of the abutment

Armentlastungsvorrichtung be arranged as the distal end.

Furthermore, it is advantageously provided that the support carrier and the

Mounting bracket are pivotally connected to each other, wherein the compound forms a support axis of rotation about which the support support and the mounting bracket are mutually pivotable, wherein the support axis of rotation is substantially perpendicular to the plane in which the support means by means of the support means is displaced.

A support joint realized while the articulated connection of the support support and the mounting bracket. The carrier joint is in this case encompassed by the carrier device and realizes a rotation about the carrier rotation axis, wherein the latter runs essentially parallel to the first axis of rotation and to the fastening axis of rotation.

It is understood that the arm relief device can have further joints which realize further axes of rotation about which a corresponding partial section of the arm relief device is pivotable. In particular, the further axes of rotation are parallel to one another and parallel to the first axis of rotation, fastening axis of rotation and carrier axis of rotation.

According to a further embodiment it is provided that the

Arm relief device comprises an elastic element, in particular a spring, wherein the elastic element is adapted to generate the counterforce when the force is applied to the support means perpendicular to the plane.

Advantageously, the elastic element is a helical spring which is arranged coaxially with the guide device and is positioned or fixed by the latter at least in the translatory degrees of freedom parallel to the plane.

In particular, in this case, the guide device is telescopic in a direction perpendicular to the plane and by two rotationally symmetrical sliding into one another

Elements formed. A first rotationally symmetric element can be attached to the Auflageeinnchtung be arranged and a second rotationally symmetrical sches element may be arranged on the support means.

In this case, the rotationally symmetric elements can be longitudinally through the

Coil spring and extend coaxially with respect to this.

Alternatively, a sleeve-shaped element of the guide device on the radial outer side of the coil spring position this.

The elastic element is designed and arranged such that it is tensioned upon application of the force to the support means and exerts the counterforce as a result of their tension.

When the support is moved downwardly towards the table top, the tension of the spring increases, so that the counterforce exerted by the spring increases. In this way, said counterforce dependence is realized as a function of the distance traveled.

A further aspect of the invention relates to a method for treating a mouse arm and / or a method for preventing the development of a mouse arm, comprising the steps of: a) attaching an arm relief device according to the first aspect of the invention to an object, b) applying a region of a human Arms, eg c) movement of the arm or hand perpendicular to the plane while applying a counter force to the hand or arm applied to the force applied by the arm or hand.

The arm relief device is in particular on a table top of a

Fixed desk, in particular so that the support device is positioned in an area in which the user usually moves his elbow or forearm of the arm used for working when working with a mouse and / or keyboard.

The equilibrium position of the support device is adjusted in particular so that the user when working with a mouse and / or always a light force, preferably between 1 N and 100 N, must exercise on the support device when he doing the Elbow or forearm of the arm used for working on the

Support device supports.

The user works with the mouse or keyboard in such a way that the user always works while working his elbow of the arm used for working on the

Support device holds supported. Translational movements of the arm parallel to the table top, e.g. when moving the mouse, due to the pivoting of the support means free, that is, without counteracting a significant drag of the movement, are performed.

Also, two arm relief devices, one for the left and the elbow of the right arm, respectively, may be used and appropriately positioned and mounted in the vicinity of the workstation (preferably a left armrest and another right of the user). Alternatively, for attachment to a table top, the attachment can optionally also be done on a suitable chair.

By placing the elbow or forearm of the arm with which the user operates the mouse on the support means integrated in the arm relief device according to the invention, the arm weight (typically 3000 g ± 1000 g) is first removed from the user.

The balance position of the overlay (height above the table top) can be individually adjusted to the user's sitting position at the desk so that the user intuitively manipulates the elbow or forearm when working with the mouse, as long as he has his elbow or forearm positioned on the overlay device (working with the mouse) means not only performing click movements, but also any activity that touches the mouse, such as moving the mouse back and forth on the surface of the tabletop ,

A slight pressure of the elbow on the support device is sufficient. Preferably, the balance position of the support means is adjusted so that the user, when working with the mouse with the elbow or forearm in addition to the weight of the dead weight of the arm, a force between 2.9 and 14.7 N (corresponding to a weight of about 300 to 1500 g in addition to the arm weight) on the support device exercises. Not only does the user passively "lay down" the arm on the arm support and support device, but also actively exerts a downward force on the abutment, activating the lower part of the trapezius muscle (ascending ascendent). As a result, pressing the elbow activates the antagonistic movement chain, in particular the entire antagonistic movement chain.

The state of tension of the agonistic chain of movement, which has been caused by one or more fingers resting on the mouse, is reduced or eliminated by activating the antagonistic chain of motion The lower part of the trapezius, which is activated, inhibits the upper part of the trapezius causing the discomfort Trapezius (the descendants) by reciprocal inhibition (mutual inhibition).

The invention will be described below with reference to an accompanying drawing

illustrated embodiment explained.

It shows:

1 shows a perspective schematic representation of an embodiment of the arm relief device according to the invention.

The armrest device has a supporting device 1, a carrier device 2 and a fastening device 3. In order to simplify the description of the mode of action of the arm relief device, the arm relief device will be described below with reference to a coordinate system (x, y, z) which is also shown in FIG.

The arrow z indicates the intended use of the

Armentlastungsvorrichtung the direction of gravitational force (gravity) on. The direction of the arrow z (arrowhead) thus points to "down", the end of the arrowhead points to "up". In the following, in particular, the terms "top" and "bottom", "above", "below", etc. refer to the directions or orientations thus defined by means of the arrow z. Further below, a plane perpendicular to the arrow z is referred to as a "horizontal" or "horizontal" plane. This plane is in particular parallel to the table top to which the armrest device is attached.

With the attachment device 3, the armrest device can be attached to a desk top such that the armrest device is positioned with respect to gravity as shown in FIG. The desk top runs in particular horizontally, thus in the xy plane, but it is also conceivable that the desk plate is inclined to the horizontal.

The support device 1 has a support buffer 1 1, which can be made for example of sponge rubber or viscoelastic foam. The support buffer 1 1 thereby forms a support surface 13, which is oriented upwards and on which, for example, a forearm of a user can be stored. The support device 1 is connected to a support joint 10, which realizes the first rotation axis d1, with the support device 2, which further comprises a guide device 12. The guide device 12 is on the one hand rotatably connected to the support device 1 and on the other hand rotatably connected to the support means 2 and allows in itself a rotary motion. That is, the guide means 12 itself forms at the same time a support joint 10, whereby a rotation of the support means 1 and the guide means 12 is realized about the first axis of rotation d1.

Furthermore, the guide device 12 comprises an elastic element (not shown), which is in particular a helical spring, which is coaxial in the

Guide device 12, preferably in the interior of the support joint 10, is arranged such that upon application of a force F, which has at least one component acting along the first axis of rotation d1 substantially on the

Support device 1 counteracts a corresponding counterforce of the force F generated by the elastic element.

The carrier device 2 has a support support 31 and a mounting bracket 32. The carrier device 2 further comprises a carrier joint 30, which the

Support support 31 hingedly connects to the mounting bracket 32.

The support bracket 31 is connected to one side with the support joint 10 and to another side with the support joint 30, wherein the mounting bracket 32 to one side with the support joint 30 and to another side with a

Fastening joint 20 is connected. The fastening joint 20 in this case connects the carrier device 2 or its attachment carrier 32 to the fastening device 3.

The support bracket 31 and the mounting bracket 32 are as a rigid carrier

configured, wherein they have at their respective ends a rectangular solid profile with which they are firmly connected to the respective joint 10, 20, 30, and wherein they further at least partially, preferably over the majority of their extension, have a perforated web support profile. The carrier joint 30 connects the support bracket 31 with the mounting bracket 32 and thereby forms a support axis of rotation d3, around which the support bracket 31 and the mounting bracket 32 are rotatable relative to each other. In this case, the carriers 31, 32 are connected to the carrier joint 30 in such a way that they can be aligned with one another as desired. That is, the carriers 31, 32 make a complete rotation about the third

Rotation axis d3 can perform, since the carriers 31, 32 are arranged at different heights, ie one above the other or with each other, on the support joint 30.

The carrier rotation axis d3 realized by the carrier joint 30 is substantially parallel to the first axis of rotation d1.

The fastening device 3 allows the attachment of the Armentlastungsvorrichtung to a desk top. The fastening device 3 is by means of a

Fastening joint 20 rotatably connected to the mounting bracket 32, wherein the mounting joint 20 realized a mounting axis of rotation d2, which in

Is substantially parallel to the first axis of rotation d1 and the support axis of rotation d3. The attachment joint 20 is further connected to the attachment device 3 such that the support rotation axis d3 of the attachment joint 20 is aligned perpendicular to the desk top when the arm relief device is attached to the desk top by means of the attachment device 3.

The fastening device 3 furthermore comprises a connecting element 21 and at least one fastening element 22.

The connecting element 21 serves to connect the at least one

Fastener 22, which realizes the attachment to an object, with the attachment joint 20. The mechanical connection between

Connecting element 21 and mounting joint 20 also realizes the fastening axis of rotation d2. The connection is realized by means of a screw connection 25, in which the connecting element 21 has a hole through which one of the

Fastening joint 20 trained threaded rod out and secured with a matching nut such that a rotation of the threaded rod 20 in the hole of the connecting element 21 is executable.

In this case, the connecting element 21 to a respective application or

Design wishes to be adapted to the Armauflagevorrichtung. Alternatively, a fastener 22 may be connected directly to the mounting joint 20, wherein this compound or the mounting joint 20 forms the mounting axis of rotation d3. For attachment to an object, such as a table top, the fastening device 3 in the embodiment shown here two

Fixing elements 22, which each comprise a suction element 23 and a lever 24. A suction member 23 can during pressing - supported by the lever 24 - to realize a vacuum on a flat surface between itself and the surface and hold there frictionally by the lever 24, the suction member 23 can be solved again. Accordingly, an attachment of the

Fastening device 3 and thus the Armentlastungsvorrichtung 1 to a

Object, such as e.g. a desk possible.

For attachment to an object, e.g. an armrest or seat of a chair, the fastening device 3 may have alternative fastening elements 22. Conceivably, e.g. also pliers elements that realize a clamping connection or screw directly to an element of a chair.

The dimensions of the support bracket 31 and the mounting bracket 32 are particularly dimensioned so that the support means 1 can be moved so that the projection of the central axis of the guide means 12 can reach on a horizontal plane any point within a semicircle, which lies in front of the desk edge on the armrest device has been attached by means of the fastening device 3, with a radius of, for example, 50 cm around the axis of rotation of the fastening joint 20.

The user sits - in relation to the edge of the desk where the

Armentlastungsvorrichtung is mounted - to a certain side (eg, left) to Armentlastungsvorrichtung, the support and mounting bracket 31, 32 and the support joint 30 can be moved to the other side (eg, to the right) during movements of the support device 1, so that the carrier device 2 does not hinder or disturb the user.

The support bracket 31, the mounting bracket 32 and the fastening device 3 form in the embodiment shown in FIG. 1, a link chain between the support bracket 1 and the fastening device 3. This joint chain has three parallel axes of rotation d1, d2, d3. By means of these axes of rotation d1, d2, d3 is the

Support device 1 in a plane perpendicular to the axes of rotation pivotally or displaceably. This plane runs in particular parallel to the table top of the

Desk to which the fastening device 3 can be attached. Preferably, this plane is horizontal. The pivotability or displacement parallel to this level allows a substantially free translational movement of the arm of the user lying on the support device, for example when the latter displaces the mouse on the table top.

During a downward movement of the support device 1 on the table top to the elastic element is stretched, so that this exerts an upward reaction force on the support device 1, which the downward movement

is opposite. This results in the user having to apply force to move the support 1 downwards (eg, to touch the mouse or keyboard) or to hold it there (eg in a working position where the user operates the mouse or keyboard) ), wherein the force F activates the antagonistic muscle strand, which leads to an inhibition of the agonistic muscle strand.

The invention is not limited to those shown in the drawings

Restricted embodiments, but it can also be provided that support means 1 can be pivoted in a plane over the fastening device 3 away and thus when mounting the fastening device 3, for example under a table top, it is possible, the support means on the table top and substantially in a plane parallel to the table top too

pivot.

Alternatively or in addition, the arm relief device can also be designed such that the attachment of the entire device takes place on the surface of a table top, so that the entire arm relief device is pivotally mounted above the plane of the table top and a user more comfortable in resting his arm on the support device You can also reach a computer mouse that lies away from the edge of the tabletop.

Physiologically, it is achieved by the arm relief device that the user of the arm relief device detects the pars ascendens of his trapezius muscle (more precisely: the side - left or right side - of the trapezius muscle whose arm the user uses for working with the mouse and whose elbow he / she on the

Support device 1 lays down), which leads to an inhibition of the pars

Descending of the trapezius muscle leads, ie, the long-term work with a mouse / keyboard usually associated permanent tension of the descending portion of the trapezius muscle is prevented. This counteracts advantageously the formation of a "mouse arm". LIST OF REFERENCE NUMBERS

1 support device

2 carrier device

3 fastening device

10 support joint

1 1 support buffer

12 guide device

13 bearing surface

20 mounting joint

21 connecting element

22 fastener

23 suction element

24 levers

25 screw connection

30 support joint

31 support carriers

32 Mounting bracket d1 first axis of rotation d2 mounting axis d3 support axis of rotation

F force

Claims

claims

1 . Armentlastungsvorrichtung, in particular for the prevention of the expression or the regression of a so-called mouse arm when working with a

Computer mouse, comprising:

- A support device (1) which is suitable for placing an elbow or forearm;

- A support means (2) which is designed to support the support means (1); characterized,

the support device (1) is displaceable in a plane guided by the support device (2), wherein the support device (2) is adapted to apply a force (F) to the support device (1) perpendicular to the plane as a function of a caused by the force (F) movement path to generate a force (F) counteracting counterforce.

2. Armentlastungsvorrichtung according to claim 1,

characterized,

in that the support device (1) is pivotable about at least one first axis of rotation (d1) which is perpendicular to the plane, wherein the support device (1) is displaceable perpendicular to the plane under load by the force (F).

3. Armentlastungsvorrichtung according to any one of the preceding claims, characterized

in that the connection between carrier device (2) and supporting device (1) comprises a guide device (12), which is connected to the carrier device (2) and the

Support device (1) is mechanically connected, wherein the guide means (12) is adapted to guide the support means (1) in its movement perpendicular to the plane.

4. Armentlastungsvorrichtung according to any one of the preceding claims, characterized

the support device (1) and support device (2) are articulated around the first axis of rotation (d1), the support device (1) and the support device (2) thus being pivotable relative to each other about the first axis of rotation (d1).

5. Armentlastungsvorrichtung according to at least one of the preceding

Claims,

characterized,

in that the armrest device further comprises a fastening device (3), wherein the fastening device (3) is connected to the carrier device (2), and wherein the fastening device (3) for fastening the armrest device to an object, in particular a desk, preferably for fastening to the Tabletop of the desk that is suitable.

6. Armentlastungsvorrichtung according to claim 5,

characterized,

in that the fastening device (3) is connected to the carrier device (2) about a

Fastening axis of rotation (d2) is pivotally connected, wherein the mounting axis of rotation (d2) is substantially perpendicular to the plane in which the support means (1) by means of the support means (2) is guided displaced.

7. Armentlastungsvorrichtung according to any one of claims 5 and 6,

wherein the carrier device (2) comprises:

a support support (31) having a distal end,

wherein the support support (31) is connected at its distal end to the support device (1);

a mounting bracket (32) having a proximal end,

wherein the mounting bracket (32) with its proximal end with the

Fastening device (3) is connected.

8. arm relief device according to claim 7,

characterized,

in that the support support (31) and the attachment support (32) are hinged together, the connection forming a support rotation axis (d3) around which the support support (31) and the support support (32) are pivotable relative to each other, the support Rotary axis (d3) is substantially perpendicular to the plane in which the support means (1) by means of the support means (2) out

is displaceable.

9. Armentlastungsvorrichtung according to at least one of the preceding claims,

characterized,

in that the armrest device has at least one elastic element which is designed to generate the counterforce when the force (F) is applied to the support device (1).

10. Armentlastungsvorrichtung according to claim 9,

characterized,

the elastic element is a helical spring which is coaxial with

Guiding device (12) is arranged.