A system and method for a patch-like, self-contained substance infusion
device which provides one or more substantially hidden patient needles
which can be placed in fluid communication with a fluid reservoir
assembly that includes a rigid bladder portion used in conjunction with a
non-distensible bladder film, such as a metallized film. The device can
be attached to a skin surface via an adhesive contact surface and a push
button activation assembly can then be used to remove an interlock,
allowing a disk, or Belleville spring assembly to apply an essentially
even and constant pressure to the contents of a fluid reservoir assembly.
The push button activation assembly further allows the release of one or
more spring-loaded patient needles into the skin surface, and establishes
a fluid communication path between the patient needles and the
pressurized fluid reservoir contents thereby delivering an infusion into
the skin. The push button activation assembly further allows the release
of one or more improved safety mechanisms after use.
