Fiber optic device for sensing analytes and method of making same
First Claim
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1. A biosensor tip device for sensing glucose in a sample comprising:
- at least one tip body having a proximal end and a distal end;
an optical fiber having a proximal end and a distal end; and
a sensing element in optical proximity to the distal end of the tip body, the sensing element comprising at least one glucose galactose binding protein (GGBP), said GGBP being adapted to bind with at least glucose, and at least one reporter group associated with the GGBP, wherein the reporter group is adapted to undergo a luminescence change upon binding of the binding protein to the glucose, and wherein the sensing element is entrapped in or attached to a polymer matrix, wherein the polymeric matrix comprises reactive groups and the polymeric matrix is attached to the distal end of the optical fiber through amine groups that are on the surface of the optical fiber.
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Abstract
A device for sensing analyte concentration, and in particular glucose concentration, in vivo or in vitro is disclosed. A sensing element is attached to the distal end of an optical conduit, and comprises at least one binding protein adapted to bind with at least one target analyte. The sensing element further comprises at least one reporter group that undergoes a luminescence change with changing analyte concentrations. Optionally, the optical conduit and sensing element may be housed within a cannulated bevel.
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Citations
35 Claims
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1. A biosensor tip device for sensing glucose in a sample comprising:
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at least one tip body having a proximal end and a distal end; an optical fiber having a proximal end and a distal end; and a sensing element in optical proximity to the distal end of the tip body, the sensing element comprising at least one glucose galactose binding protein (GGBP), said GGBP being adapted to bind with at least glucose, and at least one reporter group associated with the GGBP, wherein the reporter group is adapted to undergo a luminescence change upon binding of the binding protein to the glucose, and wherein the sensing element is entrapped in or attached to a polymer matrix, wherein the polymeric matrix comprises reactive groups and the polymeric matrix is attached to the distal end of the optical fiber through amine groups that are on the surface of the optical fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification