Automatic height adjustment of the chair of an ophthalmic examination unit for ophthalmic examinations

Abstract

Automatic height adjustment of the chair of an ophthalmological examination unit for ophthalmological examinations, characterized in that the position of the subject is automatically determined via a laser rangefinder and the subject is adjusted to the height required for the examination in the chair via an electric motor height drive.

Description

For ophthalmic examinations, inter alia, examination units are used. These examination units generally consist of a chair on which the patient to be examined, referred to here as the patient, is placed for the examination, and a mechanical structure by means of which the actual examination devices are individually positioned in front of the test person for the respective examinations. All permanently installed examination devices on and on the examination unit are matched to the same head height, i.e. viewing height, of the test person. If the setting of the height matches the test subject for an examination device on the examination unit, this also matches all further examination devices. For this purpose, at the beginning of the examination, the subject sitting on the chair must be adjusted to the viewing height of this examination apparatus with an examination apparatus positioned in front of it. The change in the height of the test subject with an examination device already positioned in front of the test subject carries the risk of a collision between the test subjects. Mainly, the height adjustment of the test person takes place by changing the height of the chair on which it was placed. In exceptional cases, for example in the case of very deep-seated wheelchair riders, it may also be possible to adapt the height of the mechanical structure of the examination unit on which the examination devices are located to the test person. These height settings, which are usually driven by electric motor, at the beginning of the examination are carried out by pressing the button by the examiner and take up up to 30 seconds depending on the speed of the electric motor height settings. During the time of the height adjustment of the test person, the examiner is tied to this activity and cannot carry out any preparations concerning, for example, the actual examination.The invention expressed in claim 1 achieves that the examiner does not have to adjust the height of the test person himself and can use the saved time, for example, preparations or the like relating to the examination. From the time the subject is placed on the chair of the examination unit, a laser range finder on the examination unit measures the position of the subject's head. The associated electronic control unit calculates the required height adjustment of the chair in order to bring the test person to the viewing height of the examination devices on and at the examination unit and carries out this height adjustment of the chair. In this case, the changed position of the subject's head is continuously monitored by the laser range finder during the height adjustment of the chair. Once the correct height of the chair and thus the correct height of the subject's head have been adjusted, the examination can begin. The height of the test subject no longer has to be changed for the entire examination using the various examination apparatuses. Collisions between the test subject and the examination unit and with the examination devices are thereby avoided. After completion of the examination, the chair automatically moves back into the basic position with the test person seated thereon.FIG. 1 (Zg. FIG. 1 shows an ophthalmological examination unit consisting of the chair (Zg. 1 + Zg. 2 / Pos. 1) on which the subject is placed, the mechanical structure (Zg. 1 + Zg. 2 / Pos. For example, FIG. 2 ) on and on which ophthalmological examination apparatuses are mounted, an examination apparatus (Zg. 1 + Zg. 2 / Pos. 3) on the examination unit and the laser range finder (Zg. 1 + Zg. 2 / Pos. 4) on a column (Zg. 1 + Zg. 2 / Pos. 5) of the examination unit which determines the position of the test subject.FIG. 2 (Zg. Figure 2) shows a test subject (Zg. 2 / Pos. 7) which is supported on the chair (Zg. 1 + Zg. 2 / Pos. 1) of the inspection unit and its position via the laser range finder (Zg. 1 + Zg. 2 / Pos. 4). The electronic control of the examination unit calculates the required height adjustment of the chair and guides it via the electromotive height drive (Zg mounted in the chair. 1 + Zg. 2 / Pos. 6).

Claims

Automatic height adjustment of the chair of an ophthalmological examination unit for ophthalmological examination data, characterized in that the position of the test person is determined automatically by means of a laser range finder and the subject is adjusted to the height required for the examination by means of an electromotive height drive in the chair.Automatic height adjustment of the chair of an ophthalmological examination unit for ophthalmological examination data, characterized in that the height adjustment of the test person is carried out at a time of the examination at which no examination devices and also no components of the examination unit are located in the movement range of the test person and collisions are thereby avoided.Automatic height adjustment of the chair of an ophthalmological examination unit for ophthalmological examination data, characterized in that the automatic height adjustment of the chair leads to a time saving and cost saving of the examiner and the clock of examinations can be increased.Automatic height adjustment of the stool of an ophthalmological examination unit for ophthalmological examination data, characterized in that the duration of the examination for the test person is shortened.

Images