| 摘要 |
A system and method for a patch-like, self-contained substance infusion device ( 700 ) which provides one or more substantially hidden patient needles ( 760 ) which can be placed in fluid communication with a fluid reservoir assembly ( 710 ) that includes a rigid bladder portion ( 712 ) used in conjunction with a non-distensible bladder film ( 740 ), such as a metallized film. The device ( 700 ) can be attached to a skin surface via an adhesive contact surface and a push button ( 780 ) activation assembly can then be used to remove an interlock ( 730 ), allowing a disk, or Belleville spring ( 735 ) assembly to apply an essentially even and constant pressure to the contents of a fluid reservoir assembly ( 710 ). The push button ( 780 ) activation assembly further allows the release of one or more spring-loaded patient needles ( 760 ) into the skin surface, and establishes a fluid communication path between the patient needles ( 760 ) and the pressurized fluid reservoir contents thereby delivering an infusion into the skin. The push button ( 780 ) activation assembly further allows the release of one or more improved safety mechanisms ( 794 ) after use which are driven by spring ( 793 ) and released by trap-door ( 790 ).
|
