Breath testing apparatus
A breath testing apparatus is provided with a mouthpiece, a collection chamber, and a discharge chute. A breath sample is captured within the collection chamber and transferred to an evacuated container through the discharge chute by a sample transfer assembly.
1. A breath collection apparatus comprising:
a breath entryway;
a first one-way coupling;
a collection chamber having proximal and distal ends and coupled at its proximal end to said breath entryway by said first one-way coupling;
a second one-way coupling coupled to the distal end of said collection chamber;
a sample transfer assembly coupled to the distal end through said second one-way coupling of said collection chamber, said sample transfer assembly configured to be selectively coupled to an evacuated air chamber to collect a portion of an end-expiration breath sample contained within the collection chamber, said sample transfer assembly comprising a needle for penetrating a septum sealing the evacuated air chamber; and
a discharge chute coupled to the distal end of said collection chamber about said sample transfer assembly, said discharge chute comprising a proximal end for coupling to said collection chamber, and a distal end for receiving said evacuated air chamber, said second one-way coupling arranged, in operation, within said discharge chute,
wherein the breath entryway, the first one-way coupling, the collection chamber, the second one-way coupling, the sample transfer assembly and the discharge chute are axially aligned with one another.
2. The breath collection apparatus according to claim 1 , the apparatus further comprising said evacuated air chamber selectively coupled to said sample transfer assembly.
3. The breath collection apparatus according to claim 1 , wherein at least one of said one-way couplings comprises a flutter valve.