Sensor array

Abstract

A sensor assembly has a substrate with a first surface and a second surface opposite the first surface, at least one analyte sensor positioned on at least one of the first surface and the second surface of the substrate, and at least one electrical contact positioned on the substrate in electrical communication with a corresponding one of the at least one analyte sensor. The substrate is configured to define a tube having an interior surface, and an exterior surface. At least a portion of the first surface of the substrate defines the interior surface of the tube, and the at least one analyte sensor is disposed on at least one of the interior surface and the exterior surface of the tube.

1 . A sensor assembly, comprising:
 a substrate having a first surface and a second surface opposite the first surface;   at least one analyte sensor positioned on at least one of the first surface and the second surface of the substrate; and   at least one electrical contact positioned on the substrate in electrical communication with a corresponding one of the at least one analyte sensor,   wherein the substrate is configured to define a tube having an interior surface, and an exterior surface with at least a portion of the first surface of the substrate defining the interior surface of the tube and the at least one analyte sensor disposed on at least one of the interior surface and the exterior surface of the tube.   
     
     
         2 . The sensor assembly of  claim 1 , wherein the substrate is flexible. 
     
     
         3 . The sensor assembly of  claim 1 , wherein the substrate is a one piece substrate. 
     
     
         4 . The sensor assembly of  claim 1 , wherein the tube has a circular cross-section. 
     
     
         5 . The sensor assembly of  claim 1 , wherein the tube has at least three planar sides, and wherein at least one analyte sensor is positioned on each of the planar sides. 
     
     
         6 . The sensor assembly of  claim 1 , wherein the at least one electrical contact is positioned on the exterior surface of the tube. 
     
     
         7 . The sensor assembly of  claim 1 , further comprising:
 an outer cannula surrounding the tube to define a fluid receiving annulus.   
     
     
         8 . The sensor assembly of  claim 1 , wherein at least one electrical contact is positioned on the interior surface of the tube. 
     
     
         9 . The sensor assembly of  claim 1 , wherein the substrate is further configured to have a tab extending from the tube, and wherein the at least one electrical contact is positioned on the tab. 
     
     
         10 . The sensor assembly of  claim 9 , wherein the tab extends from the tube in a tangential relationship to the tube. 
     
     
         11 . The sensor assembly of  claim 1 , further comprising:
 at least one amplifier front-end circuit positioned on the substrate proximate to and in electrical communication with a corresponding one of the at least one analyte sensor.   
     
     
         12 . The sensor assembly of  claim 1 , further comprising:
 a first cap connected to the tube, the first cap having a nipple defining a fluid inlet; and   a second cap connected to the tube, the second cap having a nipple defining a fluid outlet.   
     
     
         13 . A sensor assembly, comprising:
 a substrate having a first surface and a second surface opposite the first surface;   at least one analyte sensor positioned on the first surface of the substrate; and   at least one electrical contact positioned on the substrate in electrical communication with a corresponding one of the at least one analyte sensor,   wherein the substrate is configured to define a tube having an interior surface, and an exterior surface with at least a portion of the second surface of the substrate defining the interior surface of the tube and the at least one analyte sensor disposed on the interior surface of the tube.   
     
     
         14 . The sensor assembly of  claim 13 , wherein the substrate is flexible. 
     
     
         15 . The sensor assembly of  claim 13 , wherein the substrate is a one piece substrate. 
     
     
         16 . The sensor assembly of  claim 13 , wherein the tube has a circular cross-section. 
     
     
         17 . The sensor assembly of  claim 13 , wherein the tube has at least three planar sides, and wherein at least one analyte sensor is positioned on each of the planar sides. 
     
     
         18 . A method of forming a sensor assembly, comprising:
 forming a plurality of analyte sensors on a surface of a flexible substrate;   forming a plurality of electrical contacts on the flexible substrate such that the electrical contacts are in electrical communication with a corresponding one of the analyte sensors; and   configuring the flexible substrate to define a tube having an interior surface and an exterior surface with the surface on which the analyte sensors are formed defining the interior surface of the tube such that the analyte sensors are disposed on the interior surface of the tube.   
     
     
         19 . The method of  claim 18 , wherein the tube is configured to have a circular cross-section. 
     
     
         20 . The method of  claim 18 , wherein the tube is configured to have at least three planar sides, and wherein the analyte sensors are formed on the substrate so that at least one analyte sensor is positioned on each of the planar sides. 
     
     
         21 . The method of  claim 18 , wherein the electrical contacts are formed on the substrate so that the electrical contacts are positioned on the exterior surface of the tube. 
     
     
         22 . The method of  claim 18 , wherein the substrate is further configured to have a tab extending from the tube, and wherein the electrical contacts are formed on the substrate so that the electrical contact are positioned on the tab. 
     
     
         23 . The method of  claim 22 , wherein the substrate is further configured so that the tab extends from the tube in a tangential relationship to the tube. 
     
     
         24 . The method of  claim 18  further comprising the step of:
 forming a plurality of amplifier front-end circuits on the substrate proximate to and in electrical communication with a corresponding one of the analyte sensors. 
 
     
     
         25 - 29 . (canceled)