Measuring apparatus with a support plate mounted upon measuring cells for a person

The invention relates to a measuring apparatus with a mounted on measurement cells Support plate for one person and a display means for displaying a line of action for standing on bearing surfaces of the support plate person.

The corrective orthopedic malpositions caused by the lower limbs caused, is conventionally carried out by an observation of the body geometry. For example, a leg length difference is due to the position of Bekkens and the curve of the lumbar spine evaluated. This review is only grossly high and also not possible without errors. Any corrective action are determined, for example, for a leg length compensation Höhenausgleichsbrettchen be used with which the effect of any Corrective action by checking the pelvic position and / or the spinal curve is determined.

A quantitative measurements permitting measuring device of the above-mentioned Art has become known from EP 0663181 A1. By below example the corners of a rectangular base plate arranged pressure or Force sensors is in the known measuring device comprises a force action line determined and displayed, for example, the fact that the course of a focal plane on the body of the standing person on the support plate or the Course of a line of action on a provided with a prosthetic leg is projected by means of a vertically oscillating laser beam. such Measuring device is suitable for the display of the course of gravity plane both with respect to the frontal plane and the sagittal plane of the on the Supporting plate standing person. The known measuring device is used to adapt of prostheses or ortheses of the lower extremities.

The known measuring device enables an objective assessment of the forces curve the supporting apparatus of the human body and in particular a practical adaptation of prosthetics and orthotics. The effect of correction or optimization actions is verified by the fact that after the implemented corrective or improvement action again surveying is made. However, this process can have a significant require time.

The present invention is therefore based on the object, a measuring device of the initially mentioned type such that an improved and simplified Implementation of corrective or improvement action is possible.

To achieve this object, a measuring device according to the invention of the above -mentioned type, characterized in that below the support surfaces and are disposed above the support plate lifting devices.

The measuring device according to the invention thus offers the advantage that by means of made lifting devices position corrections to the measurement device itself can be, and for the position corrections immediately in control The form of a change in the produce by measuring indication value of the display device takes place. A position correction of standing on the support surfaces Person is thus immediately from the change of the displayed focal line recognizable in their effect. In this way, the determination is optimally greatly simplifies position corrections and accelerated. The investigation appropriate position corrections is therefore objectively and not by the Experience, for example, an orthopedic technician solely dependent who previously determine the degree of correction or optimization based on experience had to.

The lifting devices are preferably adjustable and preferably individually designed to be adjustable, in particular with an electric adjusting drive.

The bearing surfaces are preferably aligned so that they feet the the person directly support, so both sides of a central plane positioned are. The center plane may be either the frontal plane and the sagittal plane of standing on the support surfaces meet person.

The lifting devices are preferably designed such that with them not only acting on a foot of standing person height adjustment is possible but also a support bracket is parallel or at right angles to the central plane can be varied, so that the effect of angular variations of the standing angle in the frontal plane are or sagittal controllable.

It is expedient if the lifting devices symmetrically to the bearing surfaces are arranged to the center plane. Here, any two lifters be present on both sides of the center plane. A greater variation the angle adjustment is possible in that on both sides of the center plane are at least three lifting devices available.

Taking into account the fact that the measuring device, in particular for Disabled, such as amputated persons should be suitable, it is substantially, the lifting devices of the measuring device as flat as possible to build, thus entering the measuring device by people with reduced mobility is possible and does not require larger physical exercises.

A particularly flat design of the lifting devices is possible because the Lifting devices from a central hollow spindle screw made that in Engagement with at least one rotatably disposed and with the spindle screw cooperating internally threaded sleeve part is. The Sleeve part may comprise a front wall, which directly a part of the support surface forms. The caused by the lifting mechanism Hub can still characterized be enlarged to an upper and a lower-rotatably mounted sleeve part including that of each counter with external thread portions Spindle screw cooperate.

The spindle screws have a diameter that is larger than 5 cm, preferably greater than 10 cm. It is preferred if a drive of the spindle screw with a spindle arranged in the interior of the screw and with a Internal teeth of the spindle screw meshing sprocket assembly is formed. Preferably, the sprocket assembly is in the manner of a planetary gear educated. allows the compact design of the lifting devices also, a drive motor of the sprocket assembly inside the spindle screw to arrange, so that an extremely compact measuring device for Available.

The display of the priority level, in the inventive measuring device by means of a linear oscillating laser beam or by a suitable Lens optics, in particular a cylindrical lens, line-shaped Light beam occur. The opening angle of the light beam can therefore preferably be> 90 °.

The invention will hereinafter with reference to embodiments shown in the drawing are explained in detail. Show it:<dl tsize="7"><dt>figure 1</dt><dd>a schematic representation of an embodiment of an inventive Measuring device in an application for the determination the frontal body structure</dd><dt>figure 2</dt><dd>the arrangement according to Figure 1 in the application to determine statics of the lower limb in the sagittal plane</dd><dt>figure 3</dt><dd>a plan view of four column-shaped lifting means, the bearing surfaces form</dd><dt>figure 4</dt><dd>a side view of the arrangement according to Figure 3</dd><dt>figure 5</dt><dd>a schematic plan view of two plates formed by bearing surfaces each with three underlying lifters</dd><dt>figure 6</dt><dd>a side view of the arrangement according to Figure 5</dd><dt>figure 7</dt><dd>is a schematic side view showing the structure of a preferred, compactly designed lifting device with a hollow spindle screw</dd><dt>figure 8</dt><dd>a plan view of the hollow spindle screw according to FIG. 7</dd></dl>

Figure 1 reveals a measuring device, which has a rectangular base plate having that to pressure, force or displacement sensors, preferably in the corners arranged the support plate 1 is mounted. About not shown electrical connections, which extend through frame members 2 of a housing 3, the sensors are the carrier plate 1 with an electronic system in a frontal end part 4 of the housing 3 is connected. In the frontal end part 4 of the housing 3 is a laterally movable in the direction of the arrows 5 carriage mounted, to which a projection optical system 6 is attached, with a beam of (Not shown) perpendicular to the laser end-face end part 4 of the housing 3 can be projected. As indicated in Figure 1, the oscillating deflecting 6 in the vertical direction, ie perpendicular to the surface of the support plate 1 in an angular range of, for example, 30 ° and clamped thereby with an oscillating Laser beam 7 a portion of a measured focal plane. Depending on the measured gravity moves the carriage 6 applicable side that the oscillating laser beam 7 in the field of gravity plane a person standing on the support plate 1 person is.

Above the carrier plate 1, a structure 8, the invention provides, the having of Figure 1 four lifting devices. 9 The lifting means 9 are in a square array so positioned that they together form a support surface form 10, are available on the schematically indicated 11 feet of a person can.

The position of the feet 11 of a person is shown in Figure 1 so that the oscillatory Laser beam 7 a priority level for frontal body structure projected. In contrast, for the same arrangement shown in Figure 2 a Load indicated with a foot 11 of a person, the laterally for front Terminal part 4 of the housing 3, so that the oscillating laser beam 7 a focal plane in the sagittal plane of the individual spans.

Figures 3 and 4 illustrate in a separate view of the structure 8 the lifting devices 9, the bearing surfaces 10 of the feet 11 a person form.

In contrast, the figures 5 and 6 an embodiment in which the support surfaces 10 'each formed by a rectangular plate 12, the above disposed of here three lifting devices. 9 The plate 12 is in each case connected to pivots 13 with the lifting devices 9 to be tilted of the plates to allow 12 to a variation of the angle of the bearing surfaces 10 'leads. It can be seen that the plates 12 can be tilted so that an angle in the longitudinal direction or a tilt angle of the support surface 10 ' transversely or a combination thereof is formed. The space between the plate 12 and the structure 8 can expediently with a bellows be sealed 14th

Figures 7 and 8 illustrate a preferred construction of the lifting devices 9. These consist according to FIG 7 arranged from an upper rotatably Sleeve portion 15 that a cylindrical outer wall 16 with an internal thread 17 and an upper end wall 18. Correspondingly, a lower Sleeve part 19 with a cylindrical outer wall 20 with an internal thread 21 and formed with a lower end wall 22nd Both sleeve portions 15, 19 act with a central hollow spindle screw 22 together with about their height two equal, opposite externally threaded portions 23, 24 provided is. Are the two sleeve parts 15, 19 with the lead screw 22 in Operatively engaged, rotation of the lead screw 22 in one direction to that the two Hülstenteile 15, 19 of a radial center plane of the move spindle screw off, while the rotation of the lead screw 22 in the opposite direction to a movement of the sleeve parts 15, 19 in Direction of the radial center plane leads. In this way, moving the two End faces 18, 22 toward or away from each other. If the lifting device on the lower end wall 22, thus moves the upper end wall 18 in response to rotation of the lead screw 22 upwardly or downward.

The spindle screw 22 itself is shown schematically in FIG. 8 The lead screw 22 is hollow and has, on its cylindrical inner wall an internal gear 25, three in the outer teeth 26 star-shaped arranged gears engage 27th The three gears 27 driven by a central drive shaft 28 with an external toothing 29th

The central drive shaft 28 can communicate directly with one also in the interior of the spindle screw be connected 22 arranged electric motor or the output shaft form of the electric motor.

enables the construction shown in Figures 7 and 8 of a lifting device 8 a construction with a low construction height, wherein the upper side of the upper End wall 18 directly can form the bearing surface 10 according to FIG. 1