Using exhaled breath condensate for testing for a biomarker of COVID-19
View Patent ↗An apparatus for detecting a biomarker comprises a droplet harvesting structure for converting breath vapor to a fluid droplet for forming a fluid sample and a testing system having a biomarker testing zone for receiving the fluid sample and detecting a biomarker. The droplet harvesting structure may include at least one of a hydrophobic field for receiving the breath vapor and forming the fluid droplet from the received breath vapor and hydrophilic channels for receiving the fluid droplet and channeling the fluid droplet towards the testing system. A fluid dam member may be provided disposed between the droplet harvesting structure and the biomarker testing zone.
1. Apparatus for diagnostic testing, comprising:
A. a face mask;
B. a condensate collector disposed in a vicinity of a surface of the face mask, the condensate collector comprising a hydrophobic field disposed adjacent to one or more hydrophilic channels;
C. a particulate collector disposed in a vicinity of said surface of the face mask, the particulate collector comprising a surface that adheres or adsorbs exhaled aerosols; and
D. a biosensor in fluid coupling with one or more of said hydrophilic channels.
2. The apparatus of claim 1 , wherein
A. the condensate collector comprises a metallic sheet, and
B. the hydrophobic field and the one or more hydrophilic channels are formed on the metallic sheet.
3. The apparatus of claim 1 , wherein
A. the face mask comprises a concavity adapted to receive at least one of a nose and a mouth, and
B. the surface on which the condensate collector and the particulate collector are disposed is a surface of the concavity.
4. The apparatus of claim 3 , wherein the hydrophobic field has disposed thereon beads of breath moisture droplets.
5. The apparatus of claim 3 , wherein the one or more hydrophilic channels have disposed therein a fluid sample comprising said beads of breath moisture droplets.
6. The apparatus of claim 1 , wherein the condensate collector comprises a substrate that can be chilled having the hydrophobic field and the one or more hydrophilic channels formed thereon.
7. The apparatus of claim 6 , wherein the substrate comprises sheet aluminum.
8. The apparatus of claim 1 , wherein the one or more hydrophilic channels are disposed within the hydrophobic field.
9. The apparatus of claim 1 , wherein at least the hydrophobic field is disposed on a thermal mass that can be chilled.
10. The apparatus of claim 1 , wherein the condensate collector comprises a fluid dam disposed between the biosensor and one or more of the hydrophilic channels.
11. The apparatus of claim 1 , wherein the biosensor comprises a fluidic lateral flow assay including: a sample pad, a conjugate release pad, a flow membrane, and adsorbent pad.
12. The apparatus of claim 11 , comprising a fluid dam disposed between the sample pad and the conjugate release pad.
13. The apparatus of claim 1 , wherein an optical characteristic of the biosensor changes in a presence of a biomarker.
14. The apparatus of claim 13 , comprising a photoemitter disposed to emit radiation in a direction of the biosensor and a photodetector disposed to receive radiation from the biosensor.
15. The apparatus of claim 1 , comprising circuitry that generates a wireless signal indicative of activation of the biosensor.
16. The apparatus of claim 1 , wherein the particulate collector comprises particles of cough expellant.
17. The apparatus of claim 1 , wherein the particulate collector comprises a water-soluble film.
18. The apparatus of claim 17 , wherein the particulate collector comprises a reagent for a target analyte.