METHOD AND APPARATUS FOR ALCOHOL CONCENTRATION DETECTION IN A BLOOD SAMPLE
First Claim
1. A method of detection of alcohol, the method comprising taking a sample in a sample volume, presenting the sample volume to a delivery path whereby at least a portion of the sample volume is presented to a chamber for vapour equalization with the air therein and the chamber includes means for temperature conditioning the vapour equalization in the chamber between the sample volume and the air there present, the chamber being associated with a fuel cell whereby a present electrical voltage across the fuel cell relative to a developed temperature condition is indicative of alcohol content in the vapour equalization and so the sample volume taken, the sample volume comprising blood.
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Accused Products
Abstract
An alcohol level detection apparatus comprising a chamber (17) associated with a delivery path for a sample volume; conditioning means (29) for the chamber to temperature condition the sample volume in vapour equalisation with air in a head space for the chamber; and a fuel cell (22) to sample the vapour equalisation, the electrical voltage in the fuel cell giving an indication of the alcohol level relative to the temperature condition.
13 Citations
60 Claims
- 1. A method of detection of alcohol, the method comprising taking a sample in a sample volume, presenting the sample volume to a delivery path whereby at least a portion of the sample volume is presented to a chamber for vapour equalization with the air therein and the chamber includes means for temperature conditioning the vapour equalization in the chamber between the sample volume and the air there present, the chamber being associated with a fuel cell whereby a present electrical voltage across the fuel cell relative to a developed temperature condition is indicative of alcohol content in the vapour equalization and so the sample volume taken, the sample volume comprising blood.
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2. (canceled)
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5-16. -16. (canceled)
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20. (canceled)
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22. (canceled)
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24-30. -30. (canceled)
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33-34. -34. (canceled)
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36. A detection apparatus comprising:
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a) a chamber associated with a delivery path for a sample volume, the chamber having a head space; b) conditioning means for the chamber to temperature condition the sample volume in a vapour equalization with air in the head space of the chamber; c) a fuel cell associated with the head space to sample the vapour equalization to determine the present electrical voltage in the fuel cell indicative of alcohol level in the vapour equalization relative to a temperature condition, wherein the sample volume is blood. - View Dependent Claims (38, 40, 41, 42, 45, 49, 50, 51, 53, 55, 56, 59, 60)
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37. (canceled)
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39. (canceled)
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43-44. -44. (canceled)
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46-48. -48. (canceled)
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52. (canceled)
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54. (canceled)
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57-58. -58. (canceled)
Specification