Nasal and oral cannula having two capabilities and method of producing same
View Patent ↗A nasal cannula comprising a hollow main body having opposed first and second openings formed therein and the main body defining an internal chamber. A partition divides the internal chamber into first and second flow compartments. A flow passageway of a first nasal prong communicates with the first compartment and a flow passageway of the first mouth piece communicates with the first compartment to define a first flow passageway which communicates with both a first nostril and a mouth of the patient. A flow passageway of a second nasal prong communicates with the second compartment and a flow passageway of the second mouth piece communicates with the first compartment to define a second flow passageway which communicates with both a second nostril and the mouth of the patient.
1. A single, unitary nasal cannula comprising:
a hollow main body having opposed first and second ends with a first opening formed in the first end and a second opening formed in the second end, and the main body defining an internal chamber therein;
a partition dividing the internal chamber of the hollow main body into completely separate first and second flow compartments, the first flow compartment comprising the first opening and the second flow compartment comprising the second opening;
a flow passageway of a first nasal prong communicating with the first flow compartment of the hollow main body and a flow passageway of a first mouth piece communicating with the first flow compartment of the hollow main body to define a first flow path which communicates with both a first nostril and a mouth of a patient for preforming a first function, the first nasal prong being integrally coupled to the main body and extending from the main body in one direction to facilitate communication between the first nasal prong and the first nostril of the patent, the first mouth piece being integrally coupled to the main body and extending from the main body in another direction to facilitate communication between the first mouth piece and the mouth of the patient;
a flow passageway of a second nasal prong communicating with the second flow compartment of the hollow main body and a flow passageway of a second mouth piece communicating with the second flow compartment to define a second flow path which communicates with both a second nostril and the mouth of the patient for preforming a second function simultaneously during performance of the first function, the second nasal prong being integrally coupled to the main body and extending from the main body in one direction to facilitate communication between the second nasal prong and the second nostril of the patent, the second mouth piece being integrally coupled to the main body and extending from the main body in another direction to facilitate communication between the second mouth piece and the mouth of the patient; wherein the first nasal prong is integrally coupled to the main body at a first location and the first mouth piece is integrally coupled to the main body at a second location such that the flow passageway of the first nasal prong is completely independent of the flow passageway of the first mouth piece; and the second nasal prong is integrally coupled to the main body at a third location, and the second mouth piece is integrally coupled to the main body at a fourth location such that the flow passageway of the second nasal prong is completely independent of the flow passageway of the second mouth piece.
2. The cannula according to claim 1 , wherein a first tubing is connected to the first opening in the first end of the cannula for one of supplying a gas thereto, removing a gas therefrom, and measuring air pressure therein and a second tubing is connected to the second opening in the second end of the cannula for one of supplying a gas thereto, removing a gas therefrom and measuring air pressure therein.
3. The cannula according to claim 2 , wherein an opposite end of the first tubing is connected to a device for one of supplying a gas thereto, removing a gas sample therefrom and measuring air pressure therein, and an opposite end of the second tubing is connected to a device for one of supplying a gas thereto, removing a gas sample therefrom and measuring air pressure therein.
4. The cannula according to claim 2 , wherein the first and second gas passageways have a substantially identical internal cross sectional area to one another.
5. The cannula according to claim 2 , wherein the first and second gas passageways have different internal cross sectional area from one another.
6. The cannula according to claim 2 , wherein the first gas passageway has a larger internal cross sectional area than an internal cross sectional area of the second gas passageway.
7. The cannula according to claim 2 , wherein the first and second mouthpieces extend substantially parallel to but are spaced from one another and a web interconnects the first mouthpiece with the second mouthpiece.
8. The cannula according to claim 1 , wherein a first end of a first tubing is connected to the first opening in the first end of the cannula and an opposite end of the first tubing is connected to a device for supplying a treating gas to the first compartment, and a first end of a second tubing is connected to the second opening in the second end of the cannula and an opposite end of the second tubing is connected to a device for facilitating one of monitoring, detecting and sampling of a gas withdrawn from the patient via the second fluid passageway.
9. The cannula according to claim 8 , wherein the device for supplying a treating gas to the first compartment is an oxygen supply device, and the device for facilitating one of monitoring, detecting and sampling of a gas withdrawn from the patient via the second fluid passageway is a capnograph.
10. The cannula according to claim 1 , wherein the first and second mouthpieces extend substantially parallel to one another but are spaced from one another by a distance of between about ⅛ of an inch to about ½ of an inch.
11. The cannula according to claim 1 , wherein the first and second mouthpieces each have a radius of curvature between about 0.5 of an inch to about 2.5 inches.
12. The cannula according to claim 1 , wherein the first and second mouthpieces extend substantially parallel to but are spaced from one another and the first and second mouthpieces each have a substantially similar radius of curvature.
13. The cannula according to claim 1 , wherein the main body, the first and the second nasal prongs and the first and second mouthpieces are all formed as an integral molded structure during a single manufacturing process.
14. The cannula according to claim 1 , wherein the first nasal prong and the first mouth piece extend from the main body in generally opposite directions from each other and the second nasal prong and the second mouth piece extend from the main body in generally opposite directions from each other.