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Title: Optical transcutaneous bilirubin detector

A transcutaneous bilirubin detector is designed comprising a source of light having spectral components absorbable and not absorbable by bilirubin, a handle assembly, electronic circuitry and a fiber optic bundle connecting the assembly to the light source and circuitry. Inside the assembly is a prism that receives the light from one end of the fiber optic bundle and directs it onto the skin and directs the reflected light back into the bundle. The other end of the bundle is trifucated, with one end going to the light source and the other two ends going to circuitry that determines how much light of each kind has been reflected. A relatively greater amount absorbed by the skin from the portion of the spectrum absorbable by bilirubin may indicate the presence of the illness. Preferably, two measurements are made, one on the kneecap and one on the forehead, and compared to determine the presence of bilirubin. To reduce the impact of light absorption by hemoglobin in the blood carried by the skin, pressure is applied with a plunger and spring in the handle assembly, the pressure limited by points of a button slidably carried in the assembly that are perceived by touch whenmore » the pressure applied is sufficient. 6 figures.« less
Inventors:
Issue Date:
OSTI Identifier:
5207131
Assignee:
PTO; EDB-94-057294
Patent Number(s):
US 5259382; A
Application Number:
PPN: US 7-663518
Contract Number:
AC09-89SR18035
Resource Relation:
Patent File Date: 4 Mar 1991
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; BILIRUBIN; MEASURING METHODS; OPTICAL EQUIPMENT; DESIGN; ABSORPTION SPECTRA; DIGESTIVE SYSTEM DISEASES; AZOLES; CARBOXYLIC ACIDS; DISEASES; EQUIPMENT; HETEROCYCLIC ACIDS; HETEROCYCLIC COMPOUNDS; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PIGMENTS; PYRROLES; SPECTRA; 550200* - Biochemistry; 550900 - Pathology