SU671805A1 - Apparatus for determining tactile sense and algesthesia - Google Patents

Description

(54) PROPERTY FOR DETERMINATION OF TACTICAL AND PAINFUL SENSITIVITY

I

. The invention relates to medical technology.

A device for determining tactile and pain sensitivity is known, consisting of a body and an irritant in the form of a needle or bristle that can be moved along the axis of the body.

The irritant has the ability to move freely along the axis of the housing, in the upper part of the latter there is a pocket with tinted balls, connected through a screw guide groove, and a separate cutter of individual balls with the receiving cylinder.

When the free end comes in contact with the skin, the pressure on the irritant is equal to the weight of the separated balloons 1.

The drawback of the device is the possibility of measuring only when the device is in a vertical position, and the multi-cycle process of moving the otted balls in the receiving system and the receiving cylinder due to a change in the position of the balls during the Measurement and selection of their number to transport the accuracy of

due to not monotonous, but cka4KOo6pa3Horo from (Change in pressure on the stimulus.

The purpose of the invention is to improve performance and efficiency in the work.

The goal is achieved by the fact that the device is equipped with a hearth meter, a milliammeter and a variable resistance in the form of a graphite rod, the upper end of which is located inside the grip of the additional insulating guide cartridge and is spring-loaded, while at the lower end there is an irritant holder with threaded notches The power supply, milliammeter and variable resistance are electrically connected. with each other and with the housing using up to 5 switches, a metal cap, a sliding contact and a conductor.

In addition, the device is equipped with a stopper.

0 stroke, made in the form of a rocker, fixed with an axis on the chuck-insulator, M one end of which is spring-loaded, and the other is made in the form of a hook.

On fi1. J shows a device for determining tactile and pain sensitivity, in section; in fig. 2 is a schematic diagram of the electrical connections of the device; in fig. 3 - node I of FIG. one.

The device consists of a metal case 1, in the upper part of which there is a small milliammeter 2, a power source 3, electrically connected with a variable resistance in the form of a graphite rod 4, which moves inside the cartridge-insulator 5, and a sliding contact 6.

A graphite rod 4 at one end rests on a spring 7, located in the cartridge-insulator 5 between its bottom and the graphite rod, at the opposite end of which is the holder 8 of the stimulus 9, made in the form of a needle.

The electric circuit is formed by sequential connection of elements: from one pole of the power source 3 through a metal cap 10, conductor 11, a sliding contact 6, which are attached to the cartridge-insulator 5, through a section of graphite rod 4, between the sliding contact 6 and the holder 8 through the metal holder 8, conductor 12, housing 1, switch 13 located in the upper part of housing 1, milliammeter 2, conductor 14, metal spring 15 to the other source pole mttaimsi. To isolate from the housing 1, the spring 15 is mounted on the insulating ring 16.

The switching on of the electric circuit is carried out using the switch 13.

To fix the measurements, a stop is used, which consists of a holder 8, on which threaded notches are cut, the rocker arms 17 on the hook axis 18, springs 19 and buttons 20. The rocker arm 17 is fixed on the cartridge-insulator 5 using the axis 18 and can rotate around her

The device works as follows.

In the initial state, the electrical circuit is closed by turning on the switch 13, yes. Next, press the button 20, raspormazhiva graphite rod 4 with an irritant 9. Feed the free end of the irritant 9 to the investigated skin area and press the device with the hand until a pain or tactile reaction occurs (during pressing

7, deforming, changes luiaiSHo arbitrarily force of irritation).

Having received the result, release the button 20, fixing the determined value. The threshold value of tactile or pain sensitivity is determined by the indication of a milliammeter, the scale of which is adjusted to any desired units of measurement and their gradations. Upon completion of measurement of the button 20, the device is reset.

The device is comfortable and reliable in any position, in any conditions on any external surface of the body, it can instantly measure both multiple and single with high accuracy, independent of the range of varying sensitivity, and give an objective assessment of it.

Claims (2)

1. A device for determining tactile and pain sensitivity, consisting of a body and an irritant in the form of a needle or bristle, installed with the possibility of movement along the axis of the body, characterized in that, in order to improve performance and efficiency, it is provided with a cartridge torus, power source, milliammeter and variable resistance in the form of a graphite rod, the upper end of which is located inside the guide cartridge of the insulator and is spring-loaded, and at the lower end is the holder p irritant with threaded notches, where the power supply, milliammeter and variable resistance are electrically connected to each other and to the housing by means of a switch, a metal cap, a sliding contact and a conductor. 2. Pop-1 device, characterized in that, in order to fix the measurement results, it is provided with a travel stop, made in the form of a rocker arm, fixed with an axis on the cartridge-insulator, and one end of which is spring-loaded, and the other end is in the form of a hook . Sources of information taken into account in the examination 1. Copyright certificate №506332, cl. A 61 B 5/00, 03/15/76. sixteen a