SU839519A1 - Device for measuring man's saliva flow - Google Patents

Description

one

The invention relates to medical technology, namely to devices for the study of the excretory functions of the body.

A device for measuring the flow of human saliva is known, comprising a cylindrical body with inner and outer chambers, a disk sensing element mounted on a beam of a displacement transducer in a body with a radial clearance (Jl}.

However, the known device does not provide a high accuracy of measuring the flow of saliva in conditions of unlimited mobility of a person, which makes it difficult to analyze the results of tests and diagnostics.

The purpose of the invention is to improve the accuracy of measuring the flow of saliva in conditions of unlimited mobility of a person.

The goal is achieved by the fact that in a device for measuring the flow of human saliva, consisting of

a cylindrical body containing the inner and outer chambers, and a disk sensing element mounted on the beam, a displacement transducer in the housing with a radial clearance, in the housing between the inner and outer chambers an annular protrusion is made, and the sensing element disc is adjacent to the protrusion displacement transducer beam movably.

Figure 1 shows a device for measuring human saliva consumption, in section; figure 2 is a view of L in figure 1,

The device will hold the cylindrical body 1 with the inner 2 and outer 3 chambers, between which an annular protrusion 4 is made, a protruding disk 5 of the sensing element 5 is attached to the protrusion 4 from the outside, which is attached to the movement beam converter 6 movably. Moreover, the free end of the beam 6 is connected with the center 5 of the disk, and the casing is equipped with a tube 7 for draining saliva and an 8 suction air tube. The device works as follows. When the device is located above the test gland by suction using air suction from the tube 8, under the action of the pressure of saliva collecting in chamber 3, the disk 5 moves in the axial direction, thereby creating an annular gap between the circumference of the disk and the protrusion 4. Leaking, penetrate through this gap into the inner chamber, with the help of a tube 7. With a change in the flow rate of saliva, its pressure in the chamber 3 of the device changes. In this case, the disk 5 together with the end of the strain gauge beam 6 is moved. It is displaced and determines the magnitude of the electrical signal unbalance of the strain gauge bridge. Thus, the device provides not only collecting salivary gland secretions, but also measuring its instantaneous flow with an error of no more than 13%, while the drip method of measuring saliva flow (due to different volumes. -.- lh -.h siLJiftt Jt: f drops) has an error of 17 - 10%. The implementation of the device with a protrusion and the location of the disk with eccentricity provides the center of the disk by

Claims (1)

Fig.1 5194 not less than 0.02 mm with a minimum flow of saliva 5, which gives the device a high sensitivity. The proposed device makes it possible to measure the flow rate of saliva in dynamics when the operator is subjected to vibration accelerations up to 10 q. A device for measuring the flow of human saliva, consisting of a cylindrical body containing an inner and outer chamber, and a disk sensing element mounted on a beam transducer displaced in a housing with a radial clearance, characterized in that, in order to improve the measurement accuracy saliva flow in conditions of unlimited mobility of a person, in the body between the inner and outer chambers there is an annular projection, and the sensing element disk is adjacent to the protrusion with the outer toro and s. secured to the beam converter movement movably. Sources of information taken into account in the examination 1. Information leaflet LENTSTN № 1129-75. L., 1975. Su3A L V //. /. Fi, 2