A pressure sleeve assembly and a method of its use in a fluid injection
system are disclosed. The pressure sleeve assembly includes a
longitudinal base member, an endplate associated with the longitudinal
base member, a fixed or freely removable door, a cylinder and a pivotal
arm coupling the cylinder to the longitudinal base member. The pressure
sleeve assembly includes properties that increase the ease of use and
maintenance of the assembly so as to reduce the effort required by the
user and increase the biosafety aspect of the assembly. In addition, the
pressure sleeve assembly includes properties that reduce the amount of
effort required by the physician prior to and during use of the system as
well as properties that increase its range of applications.