The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2026
Filed:
Jan. 24, 2024
Siemens Healthcare Diagnostics Inc., Tarrytown, NY (US);
Janine Cox, Stoughton, MA (US);
Justin Desilva, Mendon, MA (US);
Justin Davis, Raleigh, NC (US);
Michael Chen, Sharon, MA (US);
Siemens Healthcare Diagnostics Inc., Tarrytown, NY (US);
Abstract
An apparatus comprises a barrel and a colorimetric assay assembly. The barrel has a sidewall defining a portion of a colorimetric chamber that is in fluid communication with an internal chamber defined by an inner surface. The colorimetric assay assembly, housed in the colorimetric chamber, comprises a sample application pad to receive a fluid sample and a colorimetric detection pad to visualize a presence of free hemoglobin. The sample application pad is formed of a prefiltration layer and a filtration layer. The prefiltration layer comprises a distal surface having a first wetting property and a hydrophilic receiving surface having a second wetting property less than the first wetting property and is configured to receive the fluid sample and convey at least a portion of the fluid sample to the filtration layer. The filtration layer is porous to plasma and the free hemoglobin and not porous to red blood cells.