KAIZZA Richard (US),КАИЗЗА Ричард (US),ODELL Robert (US),ОДЕЛЛ Роберт (US),KAIZZA RICHARD,КАИЗЗА Ричард,ODELL ROBERT,ОДЕЛЛ Роберт
申请号：
RU2010100326/14
公开号：
RU0002483760C2
申请日:
2008.06.12
申请国别(地区):
RU
年份:
2013
代理人:
摘要：
FIELD: medicine.SUBSTANCE: invention refers to medical equipment, namely syringe devices with a passive (automatic) blocking mechanism which restricts the movement of a piston rod in the distal direction after the injection to prevent reuse of the syringe. In the first version, the syringe comprises a cylinder, an elongated piston rod and a trim. The cylinder has a cylindrical side wall with an inner surface forming a chamber for retaining a fluid, an open proximal end and a distal end with a distal wall which provides a passageway for fluid into the chamber. The side wall includes a collar adjacent to the proximal end, and a transition section with a variable diameter, which extends from the collar towards the proximal end so that the cylinder diameter increases on the transition section in the direction from the collar to the proximal end. The rod has a proximal end, a distal end and a main body extending between the proximal and distal ends. The rod is movable inside the chamber in the proximal and distal directions. The proximal end of the rod comprises a pressure piece. The distal end of the rod comprises a connection section. Between the pressure piece and the main body of the piston rod, there is a flange having a diameter greater than that of the cylinder at the collar site. In addition, the rod comprises at least one breakable portion. The trim is formed with a proximal end, a distal end and a peripheral edge forming a seal with the inner surface of the cylinder and having a diameter greater than that of the cylinder at the collar site. The trim is connected to the connection section of the rod and movable relative to the connection section in the proximal and distal directions at a certain axial distance, so that when the distal end of the trim is found in contact with the distal wall of the cylinder, said flange may extend in the distal direction beyond the collar in the cylinder and block the piston rod in the cylinder to prevent reuse of the syringe. Th
