MENASSA Karim (CA),МЕНАССА Карим (CA),MENASSA Maurice (CA),МЕНАССА Маурике (CA),GADOUA Adam (CA),ГАДОУА Адам (CA),MENASSA Karim,МЕНАССА Карим,MENASSA Maurice,МЕНАССА Маурике,GADOUA Adam,ГАДОУА Адам
申请号：
RU2013149121
公开号：
RU0002607955C2
申请日:
2012.04.03
申请国别(地区):
RU
年份:
2017
代理人:
摘要：
FIELD: medical equipment.SUBSTANCE: invention relates to medical equipment, namely, to needle-free devices for injections in the form of rod. Device comprises the following components: cylinder case consisting of two parts in the form of tube including front and rear parts； the first chamber arranged at front outlet end of the above front part； one-way hydraulic control valve located in the front part and intended to receive input liquid from the input source of fluid and feeding said liquid into the first chamber； tip on the front end of the named cylindrical housing, intended for liquid discharge from the first chamber； plunger sliding in cylindrical housing and performing movement between the position of rear retraction, at which liquid is pulled into the first chamber, and sliding forward position at which liquid is discharged through the said tip. In this case the rear part of the cylindrical body comprises an elongated body of tubular shape and tubular plug coupling the elongated body of tubular shape in the rear part with rear end of the front part. Note here that tubular plug passes in the elongated body of tubular shape and comprises second chamber, arranged behind said first chamber and separated from it； a piston sliding in said second chamber and performing movement under the action of fluid medium between position of sliding forward, at which it moves the plunger in the position of sliding forward, and position of rear retraction at which it moves the plunger in rear position. Body of tubular shape and tubular plug form the third chamber located in the above cylindrical housing, surrounding the second chamber and adapted for alternate receiving pressurized gas from said second chamber during piston retraction from rear position to position of sliding forward and release of compressed gas into said second chamber during movement of the said piston from sliding forward in rear position. Hole in said body of tubular shape allows gas to pass between the sec
