Blood sensor, blood testing apparatus, and method for controlling blood testing apparatus

Abstract

A blood sensor includes a base ( 12 ), a detection part ( 16 ) disposed on the base ( 12 ), a blood collection needle ( 13 ) disposed at a front end ( 12 a) of the base ( 12 ), a negative pressure generation part ( 17 ) for applying negative pressure to a portion of the blood collection needle ( 13 ), and a supply path ( 15 ) for supplying blood collected by the blood collection needle ( 13 ) to a detection part ( 16 ).

1 . A blood sensor comprising:
 a base;   a needle for blood collection which disposed at a front end of the base, and   a detection part for detecting a component of blood collected by the blood collection needle with use of a reagent, and a blood supply path for supplying the blood collected by the blood collection needle to the detection part, the detection part and the blood supply path being provided in the base,   wherein the detection part includes a working electrode, a counter electrode and a hematocrit electrode for detecting a hematocrit value.   
     
     
         2 . The blood sensor according to  claim 1 , wherein the detection part further includes a sensing electrode for sensing a flow of blood. 
     
     
         3 . The blood sensor according to  claim 1 , wherein the base is formed by laminating and adhering a substrate, a spacer and a cover. 
     
     
         4 . The blood sensor according to  claim 3 , wherein the substrate, the spacer and the cover comprise polyethylene terephthalate. 
     
     
         5 . The blood sensor according to  claim 3 , wherein contact electrodes connected to the respective electrodes of the detection part are formed on an upper surface of the substrate, and the contact electrodes include a conductive layer which is formed on the upper surface of the substrate by conducting sputtering or vapor deposition of gold, platinum or palladium and then by conducting laser processing thereto. 
     
     
         6 . The blood sensor according to  claim 1 , wherein the detection part is used for measuring an amount of glucose. 
     
     
         7 . The blood sensor according to  claim 1 , wherein the reagent includes glucose dehydrogenase (GDH). 
     
     
         8 . The blood sensor according to  claim 1 , wherein the reagent includes potassium ferricyanide. 
     
     
         9 . The blood sensor according to  claim 1 , wherein at least one surface of the detection part is formed of a transparent material. 
     
     
         10 . The blood sensor according to  claim 1 , further comprising a blood collection needle cover which covers the blood collection needle and is formed integrally with the base. 
     
     
         11 . The blood sensor according to  claim 1 , wherein the blood collection needle is formed of metal or plastic. 
     
     
         12 . The blood sensor according to  claim 11 , wherein a plurality of the blood collection needles are provided in parallel with each other at the front end of the base. 
     
     
         13 . The blood sensor according to  claim 11 , wherein the blood collection needle has a triangular cross section. 
     
     
         14 . The blood sensor according to  claim 11 , wherein the blood collection needle has a circular cross section. 
     
     
         15 . The blood sensor according to  claim 11 , wherein the blood collection needle has a rectangular cross section. 
     
     
         16 . The blood sensor according to  claim 11 , wherein the blood collection needle has a polygonal section. 
     
     
         17 . The blood sensor according to  claim 11 , wherein a through-hole is formed in the blood collection needle so as to penetrate between both ends of the blood collection needle. 
     
     
         18 . A blood testing apparatus used for measuring an amount of glucose, the apparatus comprising:
 a cylindrical casing;   an insertion port into which the blood sensor according to  claim 1  is inserted, and   a contact terminal to be connected to a contact electrode provided on the blood sensor.