Swab elution chamber in a test cartridge
A system and method for eluting a sample from a swab are presented. The system includes a chamber dimensioned to receive at least a portion of the length of at least one swab, a fluidic channel connected to the chamber, and an actuator. The chamber has at least one wall being a flexible film. The fluidic channel is configured to at least one of introduce and expel liquids from the chamber. The actuator is configured to contact an outer surface of the flexible film such that movement of the actuator against the outer surface of the flexible film causes a respective movement of the at least one swab when the at least one swab is disposed next to an inner surface of the flexible film. The respective movement of the at least one swab elutes the sample from the at least one swab into the chamber.
1. A method comprising:
positioning a swab having a sample near an inner surface of a flexible film, wherein the flexible film is a wall of a chamber dimensioned to receive at least a portion of the length of the swab;
flowing a liquid into the chamber via an opening;
actuating an actuator contacting an outer surface of the flexible film such that movement of the actuator on the outer surface of the flexible film causes movement of the swab, wherein the actuating induces a vibration of the flexible film at a given frequency;
eluting at least a portion of the sample from the swab into the chamber via the actuating; and
drawing the liquid and at least a portion of the sample from the chamber via the opening.
2. The method of claim 1 , further comprising agitating a plurality of beads disposed within the chamber via the movement of the actuator on the outer surface of the flexible film.
3. The method of claim 1 , wherein the positioning comprises cantilevering the swab over one or more structures within the chamber.
4. The method of claim 1 , wherein the positioning comprises contacting the inner surface of the flexible film with the swab.
5. The method of claim 1 , wherein the positioning comprises disposing the swab near, but not touching, the inner surface of the flexible film.
6. The method of claim 1 , wherein the given frequency is an ultrasonic frequency.
7. The method of claim 1 , wherein the given frequency is between 10 and 100 Hertz.
8. The method of claim 1 , wherein the actuating comprises striking the flexible film with the actuator.
9. A method comprising:
positioning a swab having a sample near an inner surface of a flexible film, wherein the flexible film is a wall of a chamber dimensioned to receive at least a portion of the length of the swab;
flowing a liquid into the chamber via an opening;
actuating an actuator contacting an outer surface of the flexible film such that movement of the actuator on the outer surface of the flexible film causes movement of the swab, wherein the actuating comprises striking the flexible film with the actuator;
eluting at least a portion of the sample from the swab into the chamber via the actuating; and
drawing the liquid and at least a portion of the sample from the chamber via the opening.
10. The method of claim 9 , further comprising agitating a plurality of beads disposed within the chamber via the movement of the actuator on the outer surface of the flexible film.
11. The method of claim 9 , wherein the positioning comprises cantilevering the swab over one or more structures within the chamber.
12. The method of claim 9 , wherein the positioning comprises contacting the inner surface of the flexible film with the swab.
13. The method of claim 9 , wherein the positioning comprises disposing the swab near, but not touching, the inner surface of the flexible film.
14. The method of claim 9 , wherein the actuating further comprises inducing a vibration of the flexible film at a given frequency.