SU957858A1 - Apparatus for registering animal respiration - Google Patents

Description

The invention relates to a medical technique, namely, devices for recording respiratory parameters in animals in an experiment.

A device for recording respiration in an animal is known, comprising a camera, a connecting tube, an amplifier and a recorder 1.

However, the known device does not provide the necessary sensitivity, since the sensor that perceives air vibrations when breathing an animal is a membrane, the rigidity of which determines the threshold of sensitivity of the installation, and the pneumatic amplifier used does not have a large gain factor.

The aim of the invention is to increase the sensitivity of the device.

The goal is achieved by the fact that the device for recording respiration in an animal, containing a chamber, connecting tube, amplification and recorder, is equipped with a U-shaped manometer connected to the chamber for the animal through a connecting tube, and an electron-electron converter for fluctuating the level of liquid in the manometer into electrical signal.

connected through an amplifier with a recorder.

The optical-electronic converter is designed as a light source, a focusing lens and a photodetector,

The drawing shows a device for recording respiration in an animal, a general view.

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The device for recording respiration in an animal contains a camera 1, an amplifier 2 and a recorder 3, and it also contains a U-shaped mano. 4 meter connected to 1 dl

15 of an animal through a connecting tube 5 and an optical-electronic converter of oscillations of a liquid level in a pressure gauge 4 into an electrical signal connected through an amplifier 2 with a recorder 3, made in the form of; a light source 6, a focusing lens 7 and a photodetector 8.

The device works in the following way ..

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Claims (2)

The animal is placed in chamber 1. The pressure in the system is equalized, which is left in this position throughout the experiment. Air oscillations during breathing of an animal penetrate through tube 5 and cause oscillation of the liquid meniscus in the pressure gauge 4, which, in turn, modulate the intensity of the light flux coming from the light source 6 and focused by the lens 7 to the point photodetector 8. on the amplifier. 2 and to register 3, the proposed device provides an increase in sensitivity when measuring breathing parameters. As a result of the high sensitivity of the y-shaped manometer and electronic amplifier. Claim 1. ycTpof CTBO for recording an animal's chucks in an animal, comprising a chamber, connecting tube, amplifier and recorder, characterized in that, in order to increase the sensitivity of the device, it is equipped with a Y-shaped manometer connected to the animal chamber through a connecting tube, and an optical-electronic converter of the fluctuations of the level of a liquid in a maneletter into an electrical signal connected through an amplifier to recorders. 2. Device according to claim 1, characterized in that the optoelectronic converter is produced in the form of a light source, a focusing lens and a photodetector. Sources of information taken into account in the examination 1. Methods for determining toxicity and hazardous chemicals. Ed. I.V. Sapotsky. M., Medicine, 1970, p. 211. . g ..