04629686 is referenced by 62 patents and cites 16 patents.

An apparatus is disclosed which delivers a dosage of a chemical substance preferably to a biological tissue in such a controlled manner that the concentration affecting the biological tissue is known at each and every point in time. The apparatus includes a plurality of vessels with each vessel containing a different concentration of the chemical substance. A valve has a plurality of inlets and a single outlet wherein each inlet is connected to a corresponding vessel. The biological tissue is preferably held within a chamber for treatment with the chemical substance. A pump positioned preferably between the valve and the biological tissue provides a transport force for delivering the chemical substance to the tissue. The valve and the pump are controlled by a computer control system which determines which inlet of the valve is fluidly connected to the outlet for providing a preselected concentration of the chemical substance to the tissue such that the concentration of the chemical substance affecting the tissue is controlled at each and every point in time.

Title
Apparatus for delivering a controlled dosage of a chemical substance
Application Number
350135
Publication Number
4629686
Application Date
June 14, 1982
Publication Date
December 16, 1986
Inventor
Micheal L Gruenberg
Chicago
IL, US
Agent
Kinney & Lange
Assignee
Endotronics
MN, US
IPC
C12M 3/00
C12M 1/36
A01N 1/02
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