Oral/nasal cannula
First Claim
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1. An oral/nasal cannula for collection of exhaled gases from a patient having nostrils and an oral cavity, comprising:
- two nasal prongs for insertion into the nostrils of the patient;
an oral prong for placement near the oral cavity of the patient, said nasal prongs and said oral prong being connected at a junction configured to be located substantially near the nostrils of the patient; and
a collection tube for the collection of the exhaled gases from the patient, said collection tube having two opposite ends, one of which is at said junction.
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Accused Products
Abstract
A nasal/oral cannula for the collection of exhaled gases from the nostrils of a patient, made up of two nasal prongs for insertion into the patient'"'"'s nostrils and a collection tube for the collection of the exhaled gases, the nasal prongs and the collection tube being connected at a single junction, such that the exhaled gases flow freely from the nasal prongs to the collection tube. An oral prong can also be provided, whose end is placed near the oral cavity of the patient, the oral prong too being connected at the single junction of the nasal prongs and the collection tube.
133 Citations
23 Claims
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1. An oral/nasal cannula for collection of exhaled gases from a patient having nostrils and an oral cavity, comprising:
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two nasal prongs for insertion into the nostrils of the patient;
an oral prong for placement near the oral cavity of the patient, said nasal prongs and said oral prong being connected at a junction configured to be located substantially near the nostrils of the patient; and
a collection tube for the collection of the exhaled gases from the patient, said collection tube having two opposite ends, one of which is at said junction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
at least one oxygen tube for delivery of oxygen, said at least one oxygen tube being configured to be located near the nostrils of the patient; and
two oxygen inlets connected to said at least one oxygen tube and being disposed such that said oxygen flows from said at least one oxygen tube through said oxygen inlets into the nostrils of the patient.
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9. The cannula of claim 8 wherein said at least one oxygen tube includes a centrally located input, substantially equidistant from said two oxygen inlets for receiving oxygen.
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10. The cannula of claim 8 wherein said at least one oxygen tube comprises two oxygen tubes, one disposed on each side of said two oxygen inlets.
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11. The cannula of claim 8 wherein said oxygen inlets are holes.
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12. The cannula of claim 11, wherein said holes include a screen constructed of a material selected from at least one of the group consisting of a hydrophobic porous material, a wide mesh, cotton wool, and a netting.
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13. A nasal cannula for collection of exhaled gases from a patient having nostrils comprising:
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two nasal prongs for insertion into the nostrils of the patient, said nasal prongs being connected at a junction configured to be located substantially near the nostrils of the patient;
a collection tube for the collection of the exhaled gases from the patient, said collection tube having two opposite ends, one of which is at said junction of said two nasal prongs. - View Dependent Claims (14, 15, 16, 17)
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18. A method of collecting exhaled gases from a patient having nostrils, the method comprising the steps of:
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(a) providing a cannula featuring;
two nasal prongs for insertion into the nostrils of the patient said nasal prongs being connected at a junction configured to be located substantially near the nostrils of the patient; and
a collection tube for collecting the exhaled gases from the patient, said collection tube having two opposite ends, one of which is at said junction of said two nasal prongs;
(b) inserting said nasal prongs into the nostrils of the patient;
(c) attaching said collection tube to a gas analyzer; and
(d) applying a force at said gas analyzer, such that the exhaled gases flowing through the cannula move from said collection tube to said gas analyzer.
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19. A method of collecting exhaled gases from a patient having nostrils and an oral cavity, the method comprising the steps of:
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(a) providing a cannula featuring;
two nasal prongs for insertion into the nostrils of the patient;
an oral prong for placement near the oral cavity of the patient said nasal prongs and said oral prong being connected at a junction configured to be located substantially near the nostrils of the patient; and
a collection tube for collecting the exhaled gases from the patient, said collection tube having two opposite ends, one of which is at said junction;
(b) inserting said nasal prongs into the nostrils of the patient;
(c) placing said oral prong near the oral cavity of the patient;
(d) attaching said collection tube to a gas analyzer; and
(e) applying a force at said gas analyzer, such that the exhaled gases flowing through the cannula move from said collection tube to said gas analyzer.
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20. A cannula for collection of exhaled gases from a patient and for delivery of oxygen to a patient having nostrils and an oral cavity, comprising:
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(a) two nasal prongs for insertion into the nostrils of the patient;
(b) a collection tube for the collection of the exhaled gases from the patient, said nasal prongs and said collection tube being connected at a single junction, such that the exhaled gases flow freely from said nasal prongs to said collection tube;
(c) an oxygen tube for delivery of oxygen, said oxygen tube being configured to be located near the nostrils of the patient; and
(d) two oxygen inlets connected to said oxygen tube and being disposed such that said oxygen flows from said oxygen tube into the nostrils of the patient. - View Dependent Claims (21, 22, 23)
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Specification