06854620 is referenced by 220 patents and cites 5 patents.

A pump system for an infusion system includes a linear drive (36, 36′) which minimizes the space occupied by the pump components in a portable housing (10, 10′). A motor (34) and a motor drive shaft (42) are arranged in parallel with, and adjacent to a syringe (14, 14′) and lead screw (94, 94′). A gear box (54) connects the drive shaft and lead screw to transfer rotational movements between them. A piston driving member, such as a cone (116) or drive nut (116′) converts the rotational movement of the lead screw into linear motion of a syringe piston (24). Sensors (150, 152) detect when the piston or cone is in a “home” position and in an “end” position, respectively. Optionally, a proximity sensor (170) is used to ensure that the cone and the piston (24) are abutting during dispensing. Alternatively, a clamping member (350) selectively clamps the lead screw (94′) against linear motion in at least a dispensing direction.

Title
Drive system for an infusion pump
Application Number
10/121318
Publication Number
6854620 (B2)
Application Date
April 12, 2002
Publication Date
February 15, 2005
Inventor
Kirk Ramey
Bedford
VA, US
Agent
Christopher & Weisberg P A
Assignee
Nipro Diabetes Systems
FL, US
IPC
B67D 005/42
B67D 005/08
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