04758228 is referenced by 98 patents and cites 7 patents.

A medical infusion pump includes a housing (10), a pump assembly (30), a bubble sensor assembly (120), a pressure sensor assembly (140) and a flow control assembly (180). The pump assembly includes a ring (26) with teeth (44) and a wheel (46) mounted for eccentric rotation within the ring. The pumping action is developed by the rotation of the wheel which continuously closes a portion of tubing (36) against one or two teeth as it goes through the pumping cycle. The bubble sensor includes a pair of sensor blocks (124) defining a generally V-shaped trough for cradling a portion of the tubing. The pressure sensor assembly detects pressure variations by movement of a diaphragm (168) coupled to a magnet (162) which is operatively coupled to a Hall effect circuit (160). The flow control assembly includes a thumb wheel (196) having a cam groove (197) interacting with a valve stem (199) for controlling the fluid flow through an orifice and associated valve seat (194).

Title
Medical infusion pump with sensors
Application Number
6/931506
Publication Number
4758228
Application Date
November 17, 1986
Publication Date
July 19, 1988
Inventor
David R Williams
San Diego
CA, US
Agent
Chilton Alix & Van Kirk
Assignee
Centaur Sciences
CT, US
IPC
A61M 1/00
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