US Patent 7959877 Immunoassay apparatus and kit

Patent 7959877 was granted and assigned to Chembio Diagnostic Systems, Inc. on June, 2011 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Chembio Diagnostic Systems, Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7959877

Date of Patent

June 14, 2011

Patent Application Number

11317118

Date Filed

December 22, 2005

Patent Primary Examiner

Alfred Worden

Patent abstract

Biological sampling apparatus have a barrel defining a chamber with a narrow passageway at one end and an absorbent analytical test means in the chamber. In one embodiment, an integral frit is provided with a first portion acting as a splash filter and located in the chamber, and a second portion integral with said first portion acting as a wick. The second portion extends through the narrow passageway. A portion of the splash filter is hydrophobic, and at least a portion of the wick is treated with a wetting agent and is hydrophilic. In another embodiment, a splash filter is located in the chamber and a separate hydrophilic wick is provided having a first portion located in the narrow passageway and a second portion located outside the passageway and barrel. The second portion has a bulbous portion capable of absorbing substantially more fluid sample than the first portion.