Breathing detection apparatus

An apparatus, comprising:

• a tube having a first end and a second end, the tube including:
• a first lumen that is open at the first end, and
• a second lumen having a manipulable member therein;
• a detection unit that attaches to the second end of the tube, the detection unit including:
• a chamber disposed in fluid communication with the first lumen of the tube, and
• a biomarker-reactive element disposed within the chamber, the biomarker-reactive element including a component such that, upon exposure to a gas having a threshold concentration level of a pre-determined biomarker, a state of the biomarker-reactive element permanently changes as an indication that the threshold concentration level of the pre-determined biomarker is present in the gas;
• a cannula channel that extends from a side of the detection unit in a direction transverse to the pathway of the tubular channel, the cannula channel being configured to allow a nasal cannula to be inserted laterally therein;
• and
• a movable obstruction element that, in a first position, permits insertion of the nasal cannula into the cannula channel, and when moved from the first position into a second position, impedes removal of the nasal cannula without pinching the nasal cannula when the nasal cannula is inserted in the cannula channel,
• wherein the cannula channel includes a slot having a width as wide as a diameter of the nasal cannula and a thickness as thick as the detection unit, and the slot extending longitudinally from an outer wall of the detection unit toward the chamber and curving to extend away from the chamber before terminating within the wall,
• wherein the detection unit further includes a protrusion on a side thereof, the protrusion extending around the tube and having a threaded external surface,
• wherein the obstruction element is a cylindrical collar having threads on an internal surface, a first side of the collar having a hole therein through which the first end of the tube extends, and a second side of the collar facing the detection unit,
• wherein, in the first position, the collar is disconnected from the detection unit and the nasal cannula is insertable into the slot, and
• wherein, in the second position, the collar is connected to the detection unit, via engagement between the threads on the internal surface of the collar and the threaded external surface of the protrusion on the side of the detection unit, and the nasal cannula is fixed in place via pressure between a sidewall of the slot and an exterior side wall of the collar.

An apparatus, comprising:

• a tube having a first end and a second end, the tube including:
• a first lumen that is open at the first end, and
• a second lumen having a manipulable member therein;
• a detection unit that attaches to the second end of the tube, the detection unit including:
• a chamber disposed in fluid communication with the first lumen of the tube, and
• a biomarker-reactive element disposed within the chamber, the biomarker-reactive element including a component such that, upon exposure to a gas having a threshold concentration level of a pre-determined biomarker, a state of the biomarker-reactive element permanently changes as an indication that the threshold concentration level of the pre-determined biomarker is present in the gas;
• a cannula channel that extends from a side of the detection unit in a direction transverse to the pathway of the tubular channel, the cannula channel being configured to allow a nasal cannula to be inserted laterally therein;
• and
• a movable obstruction element that, in a first position, permits insertion of the nasal cannula into the cannula channel, and when moved from the first position into a second position, impedes removal of the nasal cannula without pinching the nasal cannula when the nasal cannula is inserted in the cannula channel,
• wherein a cross-section profile of an exterior frame of the detection unit is generally disc-shaped,
• wherein the detection unit includes first and second cylindrical protrusions extending, respectively from opposite sides of the disc-shaped frame,
• wherein a hole extends through each of the first and second cylindrical protrusions and a center portion of the detection unit such that the hole leads into and out of the chamber,
• wherein the tube extends into the chamber through the first cylindrical protrusion,
• wherein an exterior surface of the respective first and second cylindrical protrusions includes helical threads thereon,
• wherein the obstruction element is a first cylindrical collar,
• wherein the apparatus further comprises a second cylindrical collar,
• wherein each of the first collar and the second collar have an internally threaded surface that is engageable with the helical threads of the exterior surface of the first and second cylindrical protrusions, respectively, the first collar surrounding the tube so as to engage the first cylindrical protrusion of the detection unit, and the second collar being engageable with the second cylindrical protrusion so as to secure a sample tube, which is connected to an end tidal CO2 monitor, to the detection unit,
• wherein, when viewed from a perspective of the disc-shaped cross-section profile of the detection unit, the biomarker-reactive element is positioned within at least a portion of a first half of the disc-shaped detection unit,
• wherein a second half of the disc-shaped cross-section profile includes the cannula channel including a slot extending into a center portion thereof, the slot branching into one or more slot branches that extend transverse to a direction of extension of the slot, and a width of the slot and slot branches accommodating a diameter of the nasal cannula,
• wherein the one or more slot branches extend back toward an outer perimeter of the exterior frame of the detection unit, and
• wherein a size of an outer diameter of the first collar is such that, when the first collar is engaged with the first protrusion and the nasal cannula is inserted into a slot branch, an outer surface of the first collar contacts a surface of the nasal cannula and blocks the slot branch so that the nasal cannula cannot be removed.