System for assessing lachrymal fluid content of a sample pad

Details System for assessing lachrymal fluid content of a sample pad System for assessing lachrymal fluid content of a sample pad

G - Physics

01

R

G01R 27/26 (2006.01) A61B 10/00 (2006.01) G01N 33/487 (2006.01) A61B 5/14 (1990.01)

Patent

CA 2098723

2098723 9212434 PCTABS00014 A system rapidly and accurately assesses the lachrymal fluid content in a person's eye which minimizes patient discomfort. The preferred system includes a lachrymal fluid sample device (Fig. 1, 10) and an assessment device (Fig. 2, 20). The preferred sampling device (10) includes a lachrymal fluid absorbent sample pad (12) and a non-absorbent handle (14). The preferred assessment device (20) includes a receiver (26) for receiving a lachrymal fluid sample pad (12) and includes a control circuit (36) coupled with the receiver (26) for determining the electrical capacitance of the pad (12) which capacitance varies in accordance with variations in lachrymal fluid content, and for producing an output (42) correlated with the lachrymal fluid quantity in the pad (12).

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