Electrochemical controlled dispensing assembly and method

Details Electrochemical controlled dispensing assembly and method Electrochemical controlled dispensing assembly and method

A - Human Necessities

61

M

A61M 5/142 (2006.01) A61M 5/145 (2006.01) A61M 5/172 (2006.01)

Patent

CA 2154677

A pump assembly (20) employs electrochemistry to selectively control the delivery rate of a dispensing fluid (21) from a dispensing reservoir (24) by selectively controlling the flow rate of a driving fluid (19) from a driving reservoir (23) to a receiving reservoir (33). A partition (25), separating the driving reservoir from the receiving fluid reservoir, includes at least one aperture (28) which is opened or closed depending upon an electrical signal from a remote programing unit. Flow into the receiving reservoir deflects a barrier member to expel dispensing fluid from the dispensing reservoir. The dispensing fluid flow rate can be programmed to provide an appropriate steady or varying flow rate; user-initiated pulses of dispensing fluid can also be provided. A method of controlled infusion of an infusate employing electrochemistry is also provided.

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