Patent ID: 11919004
Assignee: WISCONSIN ALUMNI RESEARCH FOUNDATION
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 12:
13. A sample extraction cassette for point-of-care molecular testing for a target in a sample provided on a swab, comprising:
a case having:
a chamber configured for receiving the swab;
a wash zone configured for receiving a wash fluid therein;
a reaction zone configured for receiving a reaction fluid therein, the reaction fluid reacting with the target; and

a membrane having a contact portion, the membrane slidably receivable into the case and being moveable between:
a transfer position wherein the contact portion of the membrane communicates with the sample provided on the swab when the swab is received in the chamber such that at least a portion of the sample is transferred to the contact portion;
a wash position wherein the contact portion of the membrane communicates with the wash zone; and
a reaction position wherein the contact portion of the membrane communicates with the reaction zone;, wherein the membrane includes:
first and second sides and a lower surface interconnecting the first and second sides; and
first and second barbs extending from corresponding first and second sides;, wherein the first and second barbs allow slideable movement of the membrane in a first direction and prevents slideable movement of the membrane in a second, opposite direction.