Adapter

1. An adapter for use in a respiratory gas sampling and/or delivery tubing systems, the adapter configured to allow interconnection of a device input connector (DIC) having a first connector configuration and a tube end connector (CEC) having a second connector configuration, the adapter comprising:

a first end comprising a first connector mateable with the DIC;

a second end configured to receive at least part of the CEC;

a locking/release mechanism configured to lock/release the CEC to/from the adapter wherein the locking/release mechanism comprises at least one latch configured to hook onto the CEC; and

a secondary cone disposed on the second end and forming at least a portion of a distal-most terminus of the adapter, wherein the secondary cone comprises a central bore extending from the distal-most terminus toward the first end along a longitudinal axis of the adapter, and wherein a diameter of the central bore decreases along the longitudinal axis from the second end to the first end.

2. The adapter of claim 1 , wherein the locking/release mechanism is configured to prevent connection and/or disconnection of the first connector to and/or from the DIC from releasing the CEC from the adaptor.

3. The adapter of claim 1 , wherein the secondary cone is formed within a void of the adapter such that the secondary cone is spaced apart and at least partially surrounded by the locking/release mechanism, and the secondary cone is configured to mate with a secondary cone formed within a void of the CEC, thereby forming an airtight passageway throughout the adapter and the CEC.

4. The adapter of claim 1 , being non-reusable after activation of the locking/release mechanism.

5. The adapter of claim 1 , comprising at least one feature rendering it incompatible with a new CEC after a first use.

6. The adapter of claim 1 , wherein the latch is configured to hook onto a thread located on an outer wall of the CEC.

7. The adapter of claim 6 , wherein the latch comprises a protrusion in an inner wall thereof, the protrusion configured to be received within a notch formed within the thread.

8. The adapter of claim 6 , wherein lifting the latch by the thread when the CEC is twisted in a counter-clockwise direction relative to the adapter releases the CEC from the adapter.

9. The adapter of claim 6 , wherein the latch comprises an opening configured to receive a bulge located on an outer wall of the CEC; wherein lifting the latch frees the bulge from the opening, thereby enabling release of the CEC from said adapter.

10. The adapter of claim 1 , further comprising a feature visibly distinguishing the adapter from the CEC.

11. The adapter of claim 1 , further comprising a tube interconnecting between the first end and the second end of the adapter.