Blood electrolyte sensors including crosslinked polyetherurethan

Details Blood electrolyte sensors including crosslinked polyetherurethan Blood electrolyte sensors including crosslinked polyetherurethan

1987-12-14

1989-03-28

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

128634, 128635, 204415, 204418, 204433, 357 25, 422 68, 422 83, 436 68, 436 74, G01N 2100, G01N 2700, G01N 2740

Patent

active

048161306

ABSTRACT:
Partition membranes which are permeable to blood electrolytes fabricated from crosslinked polyetherurethane compositions having from 20 to 50% hard segments. The membranes absorb from 50 to 120% of their dry weight of water and have electrolyte diffusion constants of up to 1.times.10.sup.-6 cm.sup.2 /sec. The membranes are included in electrochemical, fiber optic and solid state blood electrolyte sensors to provide blood compatible surfaces and to ensure that blood components deleterious to analysis of electrolyte in the blood remain separated from the sensing elements.

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