Collection device for exhaled breath
The invention as disclosed herein provides a breath-condensate analysis cartridge suitable for incorporation into an exhalation device. The cartridge comprises a condensation zone to receive exhaled breath, the condensation zone having a peripheral region. An analysis chamber is included in which a condensed breath sample is analysed. The surface of the condensation zone acts. to create a fluid flow path in the peripheral region. A fluid flow path through the peripheral region links the condensation zone to the analysis chamber. A lip at least partially covers the peripheral region, the lip co-operating with the condensation zone to form a capillary to control fluid flow.
1. A breath-condensate analysis cartridge suitable for incorporation into an exhalation device, the cartridge comprising;
a condensation zone to receive exhaled breath, the condensation zone having a peripheral region;
an analysis chamber in which a sample is analyzed;
a surface of the condensation zone acting to create a fluid flow path in the peripheral region;
the condensation zone being linked to the analysis chamber by a fluid flow path through the peripheral region;
a lip to at least partially cover the peripheral region, the lip co-operating with the condensation zone to form a capillary to control fluid flow,
wherein the condensation zone is coated or formed of a hydrophilic material.
2. The cartridge according to claim 1 , wherein the condensation zone is circular.
3. The cartridge according to claim 2 , wherein the condensation zone has a diameter of from 15.0-25.0 mm.
4. The cartridge according to claim 3 , wherein the diameter is 20.0 mm.
5. The cartridge according to claim 1 , wherein a hydrophilicity of the surface of the condensation zone is selected to be such as to form an angle with breath condensate of less than 20.0°.
6. The cartridge according to claim 5 , wherein the angle is from 5.0°-15.0°.
7. The cartridge according to claim 1 , wherein the analysis chamber includes an air-vent and a hydrophilicity of the surface of the condensation zone is selected to be such as to form an angle with breath condensate of less than 23.0°-35.0°.
8. The cartridge according to claim 7 , wherein the angle is selected to be from 24.0°-26.0°.
9. The cartridge according to claim 1 , wherein the lip includes a strip whose first end is adjacent or contiguous the analysis chamber.
10. The cartridge according to claim 9 , wherein a width of the strip is from 125-400 μm.
11. The cartridge according to claim 10 , wherein the width of the strip is from 125-300 μm.
12. The cartridge according to claim 9 , wherein a distance of the strip from the condensation zone is from 125-350 μm.
13. The cartridge according to claim 12 , wherein the distance is 250-300 μm.
14. The cartridge according to claim 1 , wherein a portion of the condensation zone is formed of or coated with a hydrophobic material, the portion being located adjacent the analysis chamber and the peripheral region.
15. The cartridge according to claim 1 , wherein the cartridge has a laminar structure which aids in allowing the cartridge to bend.