×

Meter verification method and apparatus

  • US 5,284,770 A
  • Filed: 05/24/1993
  • Issued: 02/08/1994
  • Est. Priority Date: 02/27/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for verifying the operating accuracy of an instrument for detecting the concentration of a medically significant component of a body fluid, the instrument operating by determining the remission of a reacted chemistry contained on a chemistry-bearing strip after the chemistry has reacted with the medically significant component of the body fluid, the method comprising the steps of providing an instrument including a port for receiving a user-insertable key having non-volatile memory containing data representative of instrument operating parameters, a display, a radiation source, a remission detector and a pathway from the radiation source to the chemistry and from the chemistry to the remission detector when the chemistry-bearing strip is properly inserted into the instrument, the remission of the chemistry determining the remission detected by the remission detector, inserting into the port said user-insertable key having non-volatile instrument operating accuracy-verifying memory in which data representative of a known remission of a check strip is stored, inserting the check strip, energizing the radiation source, detecting the remission from the check strip, comparing the remission from the check strip to the known remission stored in the user-insertable key, and displaying an indication whether the remission detected by the remission detector is the same as the known remission on the user-insertable key.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×