SU137237A1 - Mask for collecting exhaled air - Google Patents

Description

Rubber masks with suitably arranged inhalation and expiratory valves and hermetic evacuation to carry out various studies of gas exchange in animals and humans are well known.

A mask with a device for batch collection of exhaled air was proposed when conducting research on gas energy exchange in chickens. In order to create tightness, its rubber chamber is made in the form of a beak and the front of a bird's head, with inhalation and exhalation valves. The mask is fastened to the head by means of a rigid clamp and elastic leads. To collect portioned expiratory air when the bird breathes only through the nostrils, its inhalation valve is mounted into the opening above the nostril part of the beak, and the exhalation valve is in the front narrowed part of the chamber and connected by a rubber tube through a three-way valve with a plate clip connected to a removable plastic bag.

The proposed mask permits operation in both laboratory and field conditions.

FIG. 1 - a general view of a mask with a device; in fig. 2 - mask with valves; in fig. 3 - collar, for attaching the rubber chamber to the bird's head; in fig. 4 - clamp with a clamp.

Mask 1 is a rubber chamber made in the form of a beak and the front of a bird's head with inhalation 2 and expiratory 3 valves. The body of the inhalation valve 2 is a cylinder, at the bottom of which there are openings covered with a rubber valve on the outside. The valve is located above the nostril part of the beak. The body of the exhalation valve 3 is mounted in the expiration opening of the mask. The tube of the housing 4 is directed outwards, and from the inside it is screwed into the shield 5 with a rubber valve (not shown). The valve 3 is mounted in the nose of the mask and its protruding end 6 is connected to the plastic bag 7 by means of an elastic tube 8, equipped with a three-way valve 9.

The pouch is detachable and is connected by means of a special plate clip 10 to the pipe 11.

The mask on the face of the bird’s head is attached to the clamp 12 by means of three hook-shaped processes 13, 14 flying on a nipple rubber tube / 4a and three elastic leads 15. The clamp can be made of metal or Plexiglas. Outside, it is covered with a spongy rubber plate 16, therefore, the pressure of the collar on the back of the head and jaw decreases when the mask is strengthened. The form of the clamp ensures free breathing and swallowing.

In the upper part of the mask, a cut 17 is arranged for the free pass of the bird crest. The mask has a groove around the front opening and along the ridge cutout on the inner edge, into which the nipple rubber tube is glued, ensuring the tightness.

To ease the load, a test stand 18 under the mask is applied to the test bird.

Subject invention

Claims (2)

1. To collect air exhaled by a bird, for example, in the study of gas and energy exchange in chickens, equipped with inhalation and exhalation valves, a collection tank and a fixture, characterized in that, in order to create the required tightness, its rubber chamber is shaped in the form of a beak and The front part of the bird’s head is equipped with elastic leashes, the free ends of which are attached to the hook-shaped hooks of the rigid hinged buckle, which is freely attached to the bird’s neck. 2. Mask according to claim 1, characterized in that, for the purpose of portion collection of exhaled air when the bird breathes only through the nostrils, its inhalation valve is mounted in the hole above the nostril part of the Klyuv, and the exhalation valve is in the third narrowed part of the chamber and is connected by a rubber tube through a three-way valve with a plate clip that holds removable, for example plastic bags. Rig (rig