Devices comprising multiple capillary inducing surfaces

• US 20050147531A1
• Filed: 12/24/2003
• Published: 07/07/2005
• Est. Priority Date: 11/15/1996
• Status: Abandoned Application

• Current Assignee: BIOSITE INCORPORATED (Abbott Laboratories)
• Original Assignee: BIOSITE INCORPORATED (Abbott Laboratories)
• Inventors: Buechler, Kenneth Francis
• Application Number:
  US10/746,282
• Publication Number:
  US 20050147531A1
• Time in Patent Office: Days
• US Class Current: 422/58
• CPC Class Codes: B01L 2300/0825 Test strips
• CPC Class Codes: B01L 2400/0406 capillary forces
• CPC Class Codes: B01L 2400/086 using baffles or other fixed flow obstructions
• CPC Class Codes: B01L 3/5023 with a sample being transported to, and subsequently stored in an absorbent for analysis
• CPC Class Codes: B01L 3/502707 characterised by the manufacture of the container or its components by shaping or joining plastic parts B29C59/00, B29C65/00; by laminating B32B37/00; manufacture of microstructural devices in general B81C
• CPC Class Codes: B01L 3/50273 characterised by the means or forces applied to move the fluids micropumps F04B19/006, of the membrane type F04B43/043
• CPC Class Codes: B01L 3/502746 characterised by the means for controlling flow resistance, e.g. flow controllers, baffles B01L3/502738 takes precedence

Abstract

Assay device structures for a device where fluid flows from a one region to another. The device structures comprising one or more capillarity-inducing structures; where the capillarity-inducing structure induces capillary force along an axis that is essentially perpendicular to the axis along which capillary force induced in another region of the device.

Claims

1. An assay device comprising a proximal region and a distal region, wherein the proximal region comprises an effective capillarity-induced along a first axis, and the distal region comprises an effective capillarity-induced along a second axis, where the minimum distance which the first axis and the second axis are disposed relative to one another is between 40°

and 90°

.