Patent ID: 9554736
Date: 2017-01-31
CPC Classifications: A61B

Claim:
1. A device for testing the presence of a substance in blood, the device comprising: a housing having an outer wall, a proximal end and a distal end; a first chamber defined by the housing, the first chamber being configured to receive at least some blood withdrawn from a subject; a second chamber defined by the housing, the second chamber being in fluid communication with the first chamber to receive at least some of the withdrawn blood from the first chamber; a movable member within the outer wall between the proximal end and the distal end of the housing, the movable member being movable relative to the housing to cause a negative pressure in the second chamber to draw blood from the first chamber into the second chamber; a test strip held within the second chamber; a window within the outer wall of the housing and overlapping with the second chamber, the window enabling visual inspection of the test strip; and a slider coupled to and over the outer wall of the housing, the slider being movable proximally or distally relative to the movable member to release the movable member allowing the movable member to move relative to the housing to cause the negative pressure in the second chamber, wherein a portion of the test strip that contacts the withdrawn blood including the substance in the withdrawn blood is visually distinguishable from a portion of the test strip that does not contact the withdrawn blood.