04994167 is referenced by 565 patents and cites 20 patents.

A biological fluid measuring device for determining the presence and the amounts of substances in a biological fluid without the need for dilution of the fluid comprises a main housing including electronic circuit means and at least one electrode, and a cartridge having a membrane. The cartridge is removably mounted on the housing and the membrane is maintained operably associated by osmotic pressure with the electrode. The cartridge also includes means for protecting the membrane when the device is not in use. An enzyme electrode is also disclosed comprising a multilayered homogeneous monolithic membrane and an intermediate water-swellable coating.

Title
Biological fluid measuring device
Application Number
774330
Publication Number
4994167
Application Date
July 7, 1988
Publication Date
February 19, 1991
Inventor
Stuart J Updike
Madison
WI, US
Christopher C Capelli
Kenosha
WI, US
Mark G Shults
Madison
WI, US
Agent
Olson & Hierl
Assignee
Markwell Medical Institute
WI, US
IPC
G01N 27/404
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