Disposable sensor for use in measuring an analyte in gaseous sample
The present invention is a disposable sensor for use with a device that quantifies analytes in a gaseous sample. It comprises (i) a sensing element, (ii) a means for interfacing the disposable sensor with a gas analysis device, and (iii) a housing. When used with a device that can quantify the concentration of an analyte in a gas sample, the present invention facilitates the use of exhaled breath analysis as a clinical tool.
1. A disposable sensor for use with a device that quantifies the concentration of an analyte in a gaseous sample of exhaled breath, the disposable sensor comprising:
a housing having an inlet port through which the gaseous sample of exhaled breath is received into the housing;
a sensing element retained by and within the housing, the sensing element configured to respond to the concentration of the analyte in the gaseous sample of exhaled breath, wherein the analyte to be quantified is NO;
calibration information associated with said sensing element;
a use limitation means for limiting use of the disposable sensor; and
an interface means for ensuring proper alignment and installation of the disposable sensor within the device; and
wherein the disposable sensor is removable from the device for replacement by a second disposable sensor.
2. The sensor according to claim 1 , wherein said calibration information comprises text for reading by a user.
3. The sensor according to claim 2 , wherein said text comprises a code.
4. The sensor according to claim 2 , wherein said text comprises a coefficient table.
5. The sensor according to claim 1 , wherein said calibration information is stored in an integrated circuit that forms part of said disposable sensor.
6. The sensor according to claim 1 , wherein said calibration information is stored in a bar code that forms part of said disposable sensor.
7. The sensor according to claim 1 , wherein said calibration information is stored in an optical code that forms part of said disposable sensor.
8. The sensor according to claim 1 , wherein said sensing element is porphyrin.
9. The sensor according to claim 1 , wherein said calibration information is a pre-determined calibration coefficient used for quantifying the concentration of the analyte.
10. The sensor according to claim 1 , wherein the use limitation means comprises a code indicating an expiration date and the device prevents use of the disposable sensor after the expiration date.
11. The sensor according to claim 1 , wherein the use limitation means comprises a code read by the device, wherein use of the disposable sensor element is prevented after the code has been used a predetermined number of times.
12. The sensor according to claim 1 , wherein the interface means for ensuring proper alignment and installation of the disposable sensor within the device comprises at least one of a detent or a tab that engages with the device such that the disposable sensor is locked into place when the disposable sensor is correctly positioned within the device.
13. The sensor according to claim 1 , wherein the interface means for ensuring proper alignment and installation of the disposable sensor within the device comprises an alignment aid chosen from locating pins and holes, guiding rails, hand stops, precise pockets, a bayonet structure, a screw-on structure, and a peg-structure.