SU17798A1 - Modifying instrument for measuring pupil irritation - Google Patents

Description

In the main patent application for 2 13789, a device is described with the goal of measuring the diameter of the pupils of the eye, in its normal state and in a state of irritation. This device also makes it possible to measure the asymmetry in the location of the pupils and the squint of each eye relative to the axis of symmetry, the ways of applying the measuring glasses and 1 electric lamp, which serves to irritate the optic nerve. Measuring glasses are made of a horizontal rod with a saddle, two sliders located at the end of the platform and equipped to move along the rod and in the perpendicular direction / to it, with gears and slats bearing transparent plates with concentric circles and horizontal and vertical lines . An electric lamp with a switch for a flash of light for a certain period of time is a cylindrical cavity having a lamp on one side and a spring wound on a roller passing through the whole cavity and ending with a disk on the other.

C: groove into which the DISK INCLUDES. PW

pressing the ka button, the pin goes out of the undercut, closes the electrical circuit of the lamp and releases the disk. The latter is rotated by one revolution under the action of a spring, the rotation time of which 065 is determined by the mass of the disk and the tension force of the spring.

The proposed device is intended to measure the distance between the centers of the pupils, the distance between the center of the nose bridge and the center of each eye, as well as the diameter of the pupils in a calm state and in a state of irritation (reflex). In this device, instead of plates with concentric circles and axial lines applied to them, movable in mutually opposite directions of the glass, or frame with hairs, moving before the eyes and installed into the desired polonekie with the help of the device simultaneously giving and automatic flashes of electric lamps. Removable hinged mirrors are used to observe the position and reaction of the pupil.

In FIG. 1 shows a top view of the device; FIG. 2 is a side view of it;

fich. 3rd cross section; FIG. 4 and 5 is a cross-section and front view of a poloz with an electric lamp; FIG. b and 7-transverse razrbz and front view polozka with a mirror.

The device consists of a prismatic square section of the ruler (Figs. 1, 2 and 3) with a vertical pressure screw 2 fixed in its very middle, the rotation of which allows adjusting the ruler installation in height, as the screw 2 rests on the bracket 7 connected to the saddle 5, worn on the nose. The ends of the ruler are connected to the hooks 29, which are thrown over the ears, and at the ends of these hooks the screws 11 are fixed, during the rotation of which the ruler 1 is tightened or farther from the bridge of nose. The ends of the screws 12 rotate in the hook receptacles 28. On the ruler, two slides S are mounted, moving along the ruler by rotating the screws 9 in one direction or the other. On the ruler, divisions are applied, allowing you to count the distances from the center of the ruler or the center of the bridge of nose, marked by the tip 3 of the screw 2 to the centers of the slide, and determine the distance from the center of the slide. Brackets 35 are attached to the sled, carrying frames 23 vertically positioned in front of the eyes of the investigated subject. Within this framework, pairs of vertically standing glasses 19 and 20 or frames without glass are moved, at the bottom of which the rack bars 18 are attached; the latter are in engagement with the screw screws 16. The rotation of the screw 13 via gear 14 is transmitted to both screws 15, which, rotating in different directions, move the vertical panes 19, 20 or frames with two parallel vertical hairs fixed on them One of the hairs is located on one glass or frame, the other on another glass or frame, fixed on the inner, directly adjacent to each other adjacent sides of the glass or frame. If we start to rotate the screw 13, then both hairs will begin to come closer or diverge, remaining all the time parallel to each other, and the distance between them will be counted on applied on the glass or on the frame, nk m 22. On the frame 23 drill: -: prncr (; the hinges 27 are folded on the hinges 27, and the hinges are clamped so tightly that the hinges 25 can be left in any position. In these hinged V frames the vertical central hairs 26 are strengthened. On the; 31 light bulbs 45 with reflo chtorami 46 (figs. 4 and 5) and with conductors 43 for connection with batteries. Instead, they can be inserted into other curved poloks 51 (figs. 6 and 7), bearing hinges 53, frames 54 with mirrors 55 are fixed in KOTOpbix .

For the measurement, hooks 29 are put on the ears of the test subject and saddle 5 on the bridge of nose. By rotating the screws 11, the hooks are adjusted to the desired length, and by rotating the screw 2, the ruler is set to the desired height relative to the saddle 5; the tip 3 of the screw 2 is aligned with the center of the nose bridge. After that, the folding frames 25 fall downwards in the vertical direction and by rotating the screws 9, the slide 8 moves along the ruler 1 until the hairs 26 of the frames 25 coincide with the Pupil Centers. Then, the division between pupils and the distance from the center of the nose bridge to each pupil is counted according to dividing line 1. Then the frames 25 are folded upward, and the lamps 45, described in the main patent No. 13789, are activated in such a way that they automatically give consecutive flashes at precisely certain points in time. By rotating the screws 13 and moving the parallel hairs: 21 frames 23, we can set the hairs relative to the diameter of the pupils and thereby measure the diameter of the pupils in divisions on the frame, both in the restful position of the eye and in the reaction of the pupils from irritation, flashes of light bulbs. This produces an accurate measurement of the reaction of pupils to irritation. The installation of the hairs 25 of the hinged frames on the centers of the pupils can be performed with observation through the mirrors 55 (Fig. 5), mounted on the sled 8 at any angle necessary for observation. Then the measuring person is not worth the eyes of the studied subject.

and behind it, and install into the mirror through the head of the sub-object under study. On the mirror can be applied division.

The features of the device are that all the structural parts of the device are arranged so that before the eye 1I of the investigated subject there is nothing, except for the hairs used for measurements, and nothing obscures his field of view. All installation operations are performed by rotating the screws located on the sides of the instrument.

 The subject of the patent.

Claims (3)

1. Modification of the described 38 patent; No. 13789 of the instrument for the first reaction of the pupils to irritation, characterized in that instead of the plates with concentric circles and horizontal vertical axial lines, applied to them are movable in mutually opposite directions by means of gears 14 and worm screws of glass or frame 19, 20 with hairs 21, one on each of them, and with scales, over which glasses or frames there are folding frames 25 fixed on hinges 27 with axial hairs 26 (Figs. 1 and 2). 2.B, described in p. 1 of the device, the application of an electric lamp used for lighting U1 of p. 2 of patent No. 13789, fastened in a removable manner on the skid 8 of the device (Fig. 2). 3. In the device described in paragraph 1, the use of detachable mirrors 55 on hinges mounted on the slide 8 and used to monitor the position and reaction of the pupil. fipz - rig // m - It-. H) , fig4 syiga , .7 SHIGB