The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1995
Filed:
Feb. 24, 1993
Theodore E Cadell, Waterloo, CA;
Donald B MacHattie, Waterloo, CA;
CME Telemetrix Inc., Waterloo, CA;
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.