Back to results
US 11,761,921 B2Granted
Outer membrane compositions for creatinine/creatine sensors
AssigneeInstrumentation Laboratory Company
InventorXiaoxian Xu
Life of this patent
Estimating the term…
Abstract
Disclosed herein are compositions for permeable outer diffusion control membranes for creatinine and creatine sensors and methods of making such membranes.
Claims29
A biosensor comprising:
- an electrode;
- an enzyme layer on the electrode;
- and
- a diffusion membrane on the enzyme layer, the diffusion membrane comprising at least two different types of polyurethane materials, the at least two different types of polyurethane materials comprising (i) 50% to 55% w/w of 20% water uptake polyurethane and (ii) 45% to 50% w/w of 60% water uptake polyurethane;
- wherein the diffusion membrane has a creatinine to creatine diffusion ratio of at least 2.0.
2 more elements
Dependencies are inferred from the claim text.