SU426652A1 - SPHIGMOTONOSKOP - Google Patents

Description

one

The invention relates to medical equipment, in particular, to devices for measuring blood pressure in the arteries and veins of the retina.

A device for measuring blood pressure in the vessels of the retina is known, comprising a device for measuring pressure, a tee, a spectacle frame, a cylindrical tube with a hole for

 ophthalmoscopy and pneumo cuff with a pressure gauge and a rubber bulb. However, this device has a number of disadvantages: nrulsina is depreciated over time and changes its readings in: viscosity from ambient temperature; the inability to create a uniformly increasing pressure on the eyebrow, as it is created by the hand of the researcher.

The purpose of the invention is to fix the gaze of the patient and create a metered pressure on the eyeblock. This is achieved by the fact that in the proposed sphymo tonoscope the loading pneumatic device is made with shaped and supporting membranes, and the nozzle is made removable. An illuminating lamp with a movable diaphragm is mounted on a spectacle frame.

FIG. 1 is a schematic diagram of the described sphymo tonoscope; in fig. 2- side view of the device; in fig. 3 - view of the instrument

from above; in fig. 4 - load pneumatic device.

The SPHIGMOTONOSKOP includes a cylindrical body 1 (see Fig. 2), a load pneumatic device 2 with a plunger 3, an ophthalmoscope 4 with a screening device 5, a spectacle frame 6, a combined mercury-water manometer 7 (see Fig. 1), a gearbox 8, capacity 9, a pressure reducing valve 10, a manual pneumatic pump 11 and a pipeline 12.

i

A combined mercury-water pressure gauge allows pressure measurements in the load device system both with a water pressure gauge 13 and with a mercury pressure gauge 14. The gearbox serves for a smoother metered air supply to the load pneumatic device 2, reduction clan 10 and manual pneumatic pump

Figure 11 is used from a Riva Roccia instrument in order of standardization for measuring arterial blood pressure. The housing 1 sphigotonoskop mounted in the spectacle frame 6, which has three adjustable points of support

15, a special device for fixing the gaze of the patient, consisting of the housing of the illuminator 16, the illuminating lamp 17 n of the movable diaphragm 18 with a red filter, which has the ability to move around

field of a given radius.

The load pneumatic device consists of a plunger 3 with a cup 19 fixed on it. The plunger is placed inside a cylindrical housing 1.1 on which the illuminating device is strengthened, consisting of a cartridge 20 and a lamp. 21. The cartridge strengthened an ophthalmoscope 4, which contains a lens system 22, and in its upper part there is a screening device 5 consisting of frosted glass and a camera. In place of ground glass, a video card 23 can be installed with its connection to an electronic device with a television screen 24. Between the housing / and the plunger cup 19, the shaped membrane 25 is fixed (see Fig. 4). It forms a cavity 26, which is connected to the pneumatic system by fitting 27 and a tee 28. For correction, the ophthalmoscope 4 is able to move using a micrometric thread along the axis of the plunger 3. The plunger associated with the loading device by the shaped membrane 25 can be moved along the axis of the housing. This housing can be moved in a spectacle-mounted onpaiBe 6 along the optical axis of observation, which allows it to be quickly and easily installed in its original position. Various removable nozzles 29 are mounted on the lower free end of the plunger for various types of eye compression. In order to balance the plunger, when it is operated in a vertical position, a supporting membrane 30 is installed between the housing} and the plunger, allowing for the creation of compression from zero.

The operation with the sphymo tonoscope is as follows.

The pupil is dilated and anaesthetized the eye to be examined. The initial intraocular pressure is determined using a Maklakov tonometer.

On the plunger wear the appropriate nozzle. The spectacle frame is firmly fixed on the patient's head.

A device for fixing the patient's gaze is connected to the power supply transformer 31. The housing (together with the plunger, but without the ophthalmoscope and the cartridge) is mounted in a spectacle frame so that the nozzle is almost in contact with the eye block, and is secured in this position by a screw 32 (see Fig. 3). Then, the cartridge 20 with the ophthalmoscope 4 is installed in such a position that a clear image of the fundus of the eye forms on the screening device after connecting the illuminating luminaires 21. By means of the movable diaphragm 18, the patient's gaze is fixed in the desired position. After that, a pneumatic device with a combined pressure gauge, a gearbox, a tank and a manual pneumatic pump is attached to the sphygmotonoscope. The gearbox is set to the desired mode of air supply to the system from the tank 9

and manual pneumonias //.

The plunger gradually and smoothly begins to descend onto the eyeblock. After contact of the plunger with the eye unit, the pressure in the system begins to increase and

ophthalmic block, which is recorded at the beginning with water and mercury manometers, and then only with mercury. The increase in pressure in the pneumatic system corresponds to the increase in pressure on the eyeblock. During a pressure change on

eyeblade is continuously connected behind the fundus vessels. A Maklakov tonometer with a special holder is used to determine the intraocular pressure arising from this. The tonometer is lowered into the free space of the plunger on the cornea of the eye and then removed.

Subject invention

A sphimotonoscope containing a cylindrical body with a plunger and nozzle, a load pneumatic device connected through a tee and a reducer with a container, a manual pneumopump with a reducing valve, a mercury gauge, a spectacle frame and an ophthalmoscope, characterized in that in order to fix the patient's gaze and create a dosed pressure on the eyeblock, on the spectacle frame an illuminated lamp with a movable diaphragm is installed in the housing; the load pneumatic device is made with shaped and supporting membranes, and nozzle is removable.