CAPILLARY FILL DEVICE WITH IMPROVED FLUID DELIVERY

摘要

An improved capillary fill test device is described having a capillary aperture designed and sized to facilitate the filling of the device with fluid incident to its use. In one embodiment, the device (10) is formed having a port (24), an annular capillary portion (26) having an inner edge (27) coincident with the perimeter of port (24), a capillary fill test volume (14) having a vent (15) and a tapered portion (13), and a capillary flow conduit (16) extending between the test volume (14) and the port (24). A fluid sample delivered through port (24) to contact opposite wall (23) is drawn into capillary fill test volume (14) through capillary flow conduit (16) and annular capillary portion (26). The described improvements are particularly useful in the construction of capillary fill devices having a capillary flow conduit of reduced flow through cross-sectional area extending between a fluid sample receiving portion and a capillary fill test volume.