Finger receptor
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United States of America Patent
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-
Jul 4, 1995
Grant Date -
N/A
app pub date -
Feb 24, 1993
filing date -
Aug 29, 1990
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A finger receptor is used with a non-invasive monitoring device to determine non-invasively the concentration of known constituents in blood or tissue. The receptor has a channel for receiving a finger of a user. The channel has a light entrance and a light exit so that light can be passed from a light source through a finger located in the channel in a direction generally normal to the finger. Extraneous light is excluded and the finger is held in position by a spring-mounted roller. The receptor has sensing means to determine when a finger has been properly positioned in the channel. Previous devices are not capable of achieving repeatable results to a sufficient degree to replace invasive methods of testing.
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