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Disposable blood glucose sensor with internal pump

  • US 20080097288A1
  • Filed: 08/13/2007
  • Published: 04/24/2008
  • Est. Priority Date: 07/14/2006
  • Status: Abandoned Application
First Claim
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1. Apparatus for periodically and automatically testing a patient'"'"'s blood glucose level, wherein said patient has in place a venous or arterial catheter, comprising:

  • a disposable, wearable sensing unit having a body, said body having distal and proximal ends,a pumping chamber formed in said body of said sensing unit,pneumatic pumping means positioned within said pumping chamber, said pneumatic pumping means movable between first and second positions,a passageway formed in the body of said testing unit between the pumping chamber and the proximal end of said body, said passageway providing fluid communication between the pumping chamber and said venous or arterial catheter worn by said patient,a testing area in contact with a patient'"'"'s blood which is drawn into said sensor.actuation means for causing said pneumatic pump means to move between said first position in which said pumping chamber and said testing area are filled with blood and a second position in which said pumping chamber is emptied as blood is pumped from said pumping chamber through said passageway back into said patient, but wherein blood remains in said passageway and fills said testing area, andmeans for testing the glucose level of blood in said testing area when said pneumatic pumping means is either in said first or said second position.

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