04493704 is referenced by 198 patents and cites 4 patents.

A portable infusion device includes a disposable syringe which is located in a removable section of a compact package that comprises the device. In order to conserve 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 surface 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.

Title
Portable fluid infusion apparatus
Application Number
6/445276
Publication Number
4493704
Application Date
November 29, 1982
Publication Date
January 15, 1985
Inventor
Russell F Kirk
Sunnyvale
CA, US
Robert W Beard
Placerville
CA, US
Agent
Robert S Kelly
Assignee
OXIMETRIX
CA, US
IPC
A61M 5/20
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