摘要:
A sample collection device for a fluid sample includes: a body including a capillary channel having a first end and a second end, wherein the first end is adapted to draw the fluid into the channel by capillary action; an air vent located in the vicinity of the second end and in fluid communication with the capillary channel; a barrier positioned within the capillary channel to prevent flow of the fluid by capillary action thereacross; and features on opposing sides of the body to form an axis of rotation, which is substantially perpendicular to the overall direction of the capillary channel from the first end to the second end. In a preferred embodiment, the sample collection device is adapted to rotate about the axis of rotation within a cartridge having a sample manipulation device to bring the first end into position with the sample manipulation device.
摘要:
A sample collection device (10) for a fluid, such as body fluids like blood, urine or saliva, includes: a substantially disk-shaped body having a periphery; a capillary channel (11) extending through the body and bounded by the periphery, having a first end (12) and a second end (13), wherein the first end (12) is adapted to draw the fluid into the channel (11) by capillary action; a sample collection well (14) located in the vicinity of the second end (13) and in fluid communication with the capillary channel (11); and an axis of rotation extending through the center of the disk and which is substantially perpendicular to the upper surface of the disk-shaped body. In a preferred embodiment, the sample collection device is adapted to rotate about the axis of rotation within a cartridge of a fluid measuring device, such as a lateral flow assay, wherein the cartridge has a housing comprising an air vent (32) in fluid communication with the capillary channel (11) when the disk is rotated in a first position.
摘要:
A sample collection device (10) for a fluid, such as body fluids like blood, urine or saliva, includes: a substantially disk-shaped body having a periphery; a capillary channel (11) extending through the body and bounded by the periphery, having a first end (12) and a second end (13), wherein the first end (12) is adapted to draw the fluid into the channel (11) by capillary action; a sample collection well (14) located in the vicinity of the second end (13) and in fluid communication with the capillary channel (11); and an axis of rotation extending through the center of the disk and which is substantially perpendicular to the upper surface of the disk-shaped body. In a preferred embodiment, the sample collection device is adapted to rotate about the axis of rotation within a cartridge of a fluid measuring device, such as a lateral flow assay, wherein the cartridge has a housing comprising an air vent (32) in fluid communication with the capillary channel (11) when the disk is rotated in a first position.
摘要:
A sample collection device for a fluid sample includes: a body including a capillary channel having a first end and a second end, wherein the first end is adapted to draw the fluid into the channel by capillary action; an air vent located in the vicinity of the second end and in fluid communication with the capillary channel; a barrier positioned within the capillary channel to prevent flow of the fluid by capillary action thereacross; and features on opposing sides of the body to form an axis of rotation, which is substantially perpendicular to the overall direction of the capillary channel from the first end to the second end. In a preferred embodiment, the sample collection device is adapted to rotate about the axis of rotation within a cartridge having a sample manipulation device to bring the first end into position with the sample manipulation device.
摘要:
Disclosed is an assay device which comprises a liquid sample addition zone, a reagent zone, a detection zone, and a wicking zone, all defining a fluid flow path. The device further comprises a reagent addition zone along and in fluid communication with the fluid flow path downstream of the sample addition zone and upstream of the detection zone. An interrupting wash is added at this reagent addition zone in accordance with the method of the subject invention to control sample volume. The interrupting wash fluid is added at a predetermined fill volume on the chip device and also serves to wash the detection channel and fill the remaining chip volume.