US Patent No. 10,363,557

APPARATUS AND METHOD FOR PREPARING A BIOLOGICAL SAMPLE FOR ANALYSIS


Patent No. 10,363,557
Issue Date July 30, 2019
Title Apparatus And Method For Preparing A Biological Sample For Analysis
Inventorship Jon A. Kirschhoffer, Stillwater, MN (US)
Gregory W. Sitton, Minneapolis, MN (US)
Andrew H. Tilstra, Shoreview, MN (US)
Assignee 3M Innovative Properties Company, St. Paul, MN (US)

Claim of US Patent No. 10,363,557

1. An apparatus, comprising:a body comprising a first end and a second end opposite the first end, the body comprising:
a plurality of processing chambers comprising a first processing chamber and a second processing chamber, each processing chamber comprising an opening proximate the first end;
a first reservoir disposed in selective fluid communication with the first processing chamber via a first fluid pathway;
a second reservoir disposed in selective fluid communication with the first processing chamber via a second fluid pathway and in selective fluid communication with the second processing chamber via a third fluid pathway;
a first filter disposed in the body between at least a portion of the first processing chamber and the second reservoir;
wherein the first fluid pathway and the second fluid pathway pass through the first filter;
wherein the first filter has a first surface oriented in the first and second fluid pathways toward the first processing chamber;
a second filter disposed in the body between at least a portion of the second processing chamber and the second reservoir;
wherein the third pathway passes through the second filter;
wherein the first filter has a first surface oriented in the third fluid pathway;
a first one-way valve disposed between the first filter and the first reservoir, the first one-way valve providing selective fluid communication between the first processing chamber and the first reservoir; and
a second one-way valve disposed in the second fluid pathway between the first filter and the second reservoir, the second one-way valve providing selective fluid communication between the first processing chamber and the second reservoir; and
a third one-way valve disposed in the third fluid pathway between the second filter and the first reservoir, the third one-way valve providing selective fluid communication between the second processing chamber and the first reservoir.