Patent ID: 9624885
Date: 2017-04-18
CPC Classifications: F02M,F16F,F16K

Claim:
1. A valve assembly for a fluid injector, the valve assembly comprising: a valve body having a longitudinal axis and comprising a cavity with a valve seat, wherein the cavity is limited by a wall of the valve body, a valve needle received in the cavity, wherein the cavity and the valve needle interact to prevent an injection of fluid from the cavity in a closing position of the valve needle in which closing position the valve needle is seated on the valve seat, and to enable the injection of fluid from the cavity in an open position of the valve needle in which the valve needle is spaced apart from the closing position of the valve needle, and a first guiding element that axially guides the valve needle, wherein the first guiding element is: arranged such that an axial displacement of the valve needle away from the closing position of the valve needle results in a widening of an outer shape of the first guiding element at least in a fixation section to thereby press the first guiding element against the wall of the valve body.