SU1292785A1 - Device for intradermal needleless injections - Google Patents

Abstract

The invention relates to medical technology and can be used for intradermal jet injection. The purpose of the invention is to reduce environmental pollution. The device comprises a housing 1, a cylinder 2, a piston 3, a check valve 5, a nozzle 7, a forming prefix 8. With the help of a spherical surface of the forming prefix, a vacuum is created, the skin takes a spherical shape. When “a shot is fired, the jet enters the skin tangentially. 1 il. 3 KjrefTji / a / TJ O (L 1chE ss'o v3 00 sd

Description

The invention relates to medical technology and can be used for intradermal jet injection.

The aim of the invention is to reduce environmental pollution by eliminating the occurrence of aerosols of the preparation.

The drawing schematically shows the proposed device.

After the air has been displaced from the vacuum chamber, the piston 10 under the action of the spring 11 tends to move to the right, providing air dilution under the spherical surface of the forming prefix 8. The skin takes on the shape of a spherical surface. When “firing force part 4 has an effect on the piston 3, moving it.

Device for intradermal needle-free: The preparation under the action of pressure 3 of the expired injections comprises a housing 1, in which a cylinder 2 and a piston 3 connected with the power section 4 of the device are distributed at high speed from the nozzle 7. According to the piston 3, a check valve 5 is installed in the housing 1 of the device, to which the tube 6 with the device is mounted to the 55 way your aerosols are emerging, i.e., to reduce the contamination of the area near its end by the nozzle 7. patient concave spherical surface. The prefix contains two channels 12 and 13 with mutually perpendicular axes. Channel 12 is connected to a vacuum chamber consisting of a cylinder 9 and a piston 10 preloaded with spring 11. Channel 13, in which tube 6 with nozzle 7 is located, is connected to a check valve 5 25 valve with a cylinder, characterized in that the device. The nozzle section 7 is located on the surface in order to reduce contamination of the surrounding surface, in contact with a medium by eliminating the occurrence of

zhe.aerosol drug, the device contains

The device operates as follows: a preforming prefix with a concave

a spherical surface in which

When the device is cocked, the gap 3 from 30 is made of two channels with mutually perpendicular

n in skin.

The proposed device makes it possible to exclude a streaming medium during intradermal injection.

Claims (2)

Invention Formula A device for intradermal needle-free injections, comprising a housing inside which a cylinder and a piston are connected, connected to the power section of the device, a nozzle connected by a channel through a reverse leads to the right, with the drug being absorbed from the vial into the cylinder 2. After this, the device is attached to the skin. By pressing the button on the piston, the vacuum valve moves the piston 10 to the left. When it is moved by axes, one of which is connected to a vacuum chamber consisting of a cylinder with a spring-loaded piston and connected to the device’s body, and the other is connected through a tube with a nozzle to The scientific research institute is superseded by the device’s inverse valve 9 in the cylinder, and the air into the atmosphere through the gaps, forming a nozzle section is on a spherical at this moment between the skin and the form surface, in contact with the skin.  The way to the occurrence of aerosols of the drug, i.e., to reduce the contamination in the skin. The proposed device makes it possible to exclude a jet valve with a cylinder during intradermal injection, characterized in that, in order to reduce contamination, the environment is living environment. Invention Formula A device for intradermal needle-free injections, comprising a housing inside which a cylinder and a piston are connected, connected to the power section of the device, a nozzle connected by a channel through a reverse cool axes, one of which is connected to a vacuum chamber consisting of a cylinder with a spring-loaded piston and connected to the device’s body, and the other is connected through a tube with a nozzle to surface contact with skin.