Portable fluid infusion apparatus

Details Portable fluid infusion apparatus Portable fluid infusion apparatus

A - Human Necessities

61

M

128/80

A61M 5/20 (2006.01) A61M 5/145 (2006.01) F16H 25/24 (2006.01) F16H 55/26 (2006.01)

Patent

CA 1227391

Portable Fluid Infusion Apparatus Abstract A portable infusion device includes a disposable syringe which is located in a removable section of a com- pact package that comprises the device. In order to con- serve space, a flexible piston rod assembly is provided wherein the syringe plunger head is connected to a thin flexible plunger stem which is reversely bent about the upstream end of the syringe body so that the outer end of the stem lies directly adjacent and parallel to the syringe body. A small motor located in the non-removable portion of the package drives the plunger through a screw which sequentially engages closely spaced teeth on the face of the plunger stem as it moves along the outer sur- face of the syringe. When the syringe contents have been discharged, the removable section/ including the syringe and plunger stem assembly, can be readily removed and replaced.

442050

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